Thu, 14 Feb 2013 05:36:59 -0800
Merge
duke@435 | 1 | /* |
hseigel@4465 | 2 | * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "classfile/javaAssertions.hpp" |
hseigel@4277 | 27 | #include "classfile/symbolTable.hpp" |
stefank@2314 | 28 | #include "compiler/compilerOracle.hpp" |
stefank@2314 | 29 | #include "memory/allocation.inline.hpp" |
stefank@2314 | 30 | #include "memory/cardTableRS.hpp" |
stefank@2314 | 31 | #include "memory/referenceProcessor.hpp" |
stefank@2314 | 32 | #include "memory/universe.inline.hpp" |
stefank@2314 | 33 | #include "oops/oop.inline.hpp" |
stefank@2314 | 34 | #include "prims/jvmtiExport.hpp" |
stefank@2314 | 35 | #include "runtime/arguments.hpp" |
stefank@2314 | 36 | #include "runtime/globals_extension.hpp" |
stefank@2314 | 37 | #include "runtime/java.hpp" |
stefank@2314 | 38 | #include "services/management.hpp" |
zgu@3900 | 39 | #include "services/memTracker.hpp" |
stefank@2314 | 40 | #include "utilities/defaultStream.hpp" |
jprovino@4542 | 41 | #include "utilities/macros.hpp" |
stefank@2314 | 42 | #include "utilities/taskqueue.hpp" |
stefank@2314 | 43 | #ifdef TARGET_OS_FAMILY_linux |
stefank@2314 | 44 | # include "os_linux.inline.hpp" |
stefank@2314 | 45 | #endif |
stefank@2314 | 46 | #ifdef TARGET_OS_FAMILY_solaris |
stefank@2314 | 47 | # include "os_solaris.inline.hpp" |
stefank@2314 | 48 | #endif |
stefank@2314 | 49 | #ifdef TARGET_OS_FAMILY_windows |
stefank@2314 | 50 | # include "os_windows.inline.hpp" |
stefank@2314 | 51 | #endif |
never@3156 | 52 | #ifdef TARGET_OS_FAMILY_bsd |
never@3156 | 53 | # include "os_bsd.inline.hpp" |
never@3156 | 54 | #endif |
jprovino@4542 | 55 | #if INCLUDE_ALL_GCS |
stefank@2314 | 56 | #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" |
jprovino@4542 | 57 | #endif // INCLUDE_ALL_GCS |
duke@435 | 58 | |
ohair@2756 | 59 | // Note: This is a special bug reporting site for the JVM |
ohair@2756 | 60 | #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" |
duke@435 | 61 | #define DEFAULT_JAVA_LAUNCHER "generic" |
duke@435 | 62 | |
duke@435 | 63 | char** Arguments::_jvm_flags_array = NULL; |
duke@435 | 64 | int Arguments::_num_jvm_flags = 0; |
duke@435 | 65 | char** Arguments::_jvm_args_array = NULL; |
duke@435 | 66 | int Arguments::_num_jvm_args = 0; |
duke@435 | 67 | char* Arguments::_java_command = NULL; |
duke@435 | 68 | SystemProperty* Arguments::_system_properties = NULL; |
duke@435 | 69 | const char* Arguments::_gc_log_filename = NULL; |
duke@435 | 70 | bool Arguments::_has_profile = false; |
duke@435 | 71 | bool Arguments::_has_alloc_profile = false; |
duke@435 | 72 | uintx Arguments::_min_heap_size = 0; |
duke@435 | 73 | Arguments::Mode Arguments::_mode = _mixed; |
duke@435 | 74 | bool Arguments::_java_compiler = false; |
duke@435 | 75 | bool Arguments::_xdebug_mode = false; |
duke@435 | 76 | const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; |
duke@435 | 77 | const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; |
duke@435 | 78 | int Arguments::_sun_java_launcher_pid = -1; |
sla@2584 | 79 | bool Arguments::_created_by_gamma_launcher = false; |
duke@435 | 80 | |
duke@435 | 81 | // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) |
duke@435 | 82 | bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; |
duke@435 | 83 | bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; |
duke@435 | 84 | bool Arguments::_BackgroundCompilation = BackgroundCompilation; |
duke@435 | 85 | bool Arguments::_ClipInlining = ClipInlining; |
duke@435 | 86 | |
duke@435 | 87 | char* Arguments::SharedArchivePath = NULL; |
duke@435 | 88 | |
duke@435 | 89 | AgentLibraryList Arguments::_libraryList; |
duke@435 | 90 | AgentLibraryList Arguments::_agentList; |
duke@435 | 91 | |
duke@435 | 92 | abort_hook_t Arguments::_abort_hook = NULL; |
duke@435 | 93 | exit_hook_t Arguments::_exit_hook = NULL; |
duke@435 | 94 | vfprintf_hook_t Arguments::_vfprintf_hook = NULL; |
duke@435 | 95 | |
duke@435 | 96 | |
duke@435 | 97 | SystemProperty *Arguments::_java_ext_dirs = NULL; |
duke@435 | 98 | SystemProperty *Arguments::_java_endorsed_dirs = NULL; |
duke@435 | 99 | SystemProperty *Arguments::_sun_boot_library_path = NULL; |
duke@435 | 100 | SystemProperty *Arguments::_java_library_path = NULL; |
duke@435 | 101 | SystemProperty *Arguments::_java_home = NULL; |
duke@435 | 102 | SystemProperty *Arguments::_java_class_path = NULL; |
duke@435 | 103 | SystemProperty *Arguments::_sun_boot_class_path = NULL; |
duke@435 | 104 | |
duke@435 | 105 | char* Arguments::_meta_index_path = NULL; |
duke@435 | 106 | char* Arguments::_meta_index_dir = NULL; |
duke@435 | 107 | |
duke@435 | 108 | // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string |
duke@435 | 109 | |
duke@435 | 110 | static bool match_option(const JavaVMOption *option, const char* name, |
duke@435 | 111 | const char** tail) { |
duke@435 | 112 | int len = (int)strlen(name); |
duke@435 | 113 | if (strncmp(option->optionString, name, len) == 0) { |
duke@435 | 114 | *tail = option->optionString + len; |
duke@435 | 115 | return true; |
duke@435 | 116 | } else { |
duke@435 | 117 | return false; |
duke@435 | 118 | } |
duke@435 | 119 | } |
duke@435 | 120 | |
duke@435 | 121 | static void logOption(const char* opt) { |
duke@435 | 122 | if (PrintVMOptions) { |
duke@435 | 123 | jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); |
duke@435 | 124 | } |
duke@435 | 125 | } |
duke@435 | 126 | |
duke@435 | 127 | // Process java launcher properties. |
duke@435 | 128 | void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { |
duke@435 | 129 | // See if sun.java.launcher or sun.java.launcher.pid is defined. |
duke@435 | 130 | // Must do this before setting up other system properties, |
duke@435 | 131 | // as some of them may depend on launcher type. |
duke@435 | 132 | for (int index = 0; index < args->nOptions; index++) { |
duke@435 | 133 | const JavaVMOption* option = args->options + index; |
duke@435 | 134 | const char* tail; |
duke@435 | 135 | |
duke@435 | 136 | if (match_option(option, "-Dsun.java.launcher=", &tail)) { |
duke@435 | 137 | process_java_launcher_argument(tail, option->extraInfo); |
duke@435 | 138 | continue; |
duke@435 | 139 | } |
duke@435 | 140 | if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { |
duke@435 | 141 | _sun_java_launcher_pid = atoi(tail); |
duke@435 | 142 | continue; |
duke@435 | 143 | } |
duke@435 | 144 | } |
duke@435 | 145 | } |
duke@435 | 146 | |
duke@435 | 147 | // Initialize system properties key and value. |
duke@435 | 148 | void Arguments::init_system_properties() { |
duke@435 | 149 | |
duke@435 | 150 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", |
duke@435 | 151 | "Java Virtual Machine Specification", false)); |
duke@435 | 152 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); |
duke@435 | 153 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); |
duke@435 | 154 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); |
duke@435 | 155 | |
duke@435 | 156 | // following are JVMTI agent writeable properties. |
duke@435 | 157 | // Properties values are set to NULL and they are |
duke@435 | 158 | // os specific they are initialized in os::init_system_properties_values(). |
duke@435 | 159 | _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); |
duke@435 | 160 | _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); |
duke@435 | 161 | _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); |
duke@435 | 162 | _java_library_path = new SystemProperty("java.library.path", NULL, true); |
duke@435 | 163 | _java_home = new SystemProperty("java.home", NULL, true); |
duke@435 | 164 | _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); |
duke@435 | 165 | |
duke@435 | 166 | _java_class_path = new SystemProperty("java.class.path", "", true); |
duke@435 | 167 | |
duke@435 | 168 | // Add to System Property list. |
duke@435 | 169 | PropertyList_add(&_system_properties, _java_ext_dirs); |
duke@435 | 170 | PropertyList_add(&_system_properties, _java_endorsed_dirs); |
duke@435 | 171 | PropertyList_add(&_system_properties, _sun_boot_library_path); |
duke@435 | 172 | PropertyList_add(&_system_properties, _java_library_path); |
duke@435 | 173 | PropertyList_add(&_system_properties, _java_home); |
duke@435 | 174 | PropertyList_add(&_system_properties, _java_class_path); |
duke@435 | 175 | PropertyList_add(&_system_properties, _sun_boot_class_path); |
duke@435 | 176 | |
duke@435 | 177 | // Set OS specific system properties values |
duke@435 | 178 | os::init_system_properties_values(); |
duke@435 | 179 | } |
duke@435 | 180 | |
zgu@2219 | 181 | |
zgu@2219 | 182 | // Update/Initialize System properties after JDK version number is known |
zgu@2219 | 183 | void Arguments::init_version_specific_system_properties() { |
kamg@2298 | 184 | enum { bufsz = 16 }; |
kamg@2298 | 185 | char buffer[bufsz]; |
kamg@2298 | 186 | const char* spec_vendor = "Sun Microsystems Inc."; |
kamg@2298 | 187 | uint32_t spec_version = 0; |
kamg@2298 | 188 | |
kamg@2298 | 189 | if (JDK_Version::is_gte_jdk17x_version()) { |
kamg@2298 | 190 | spec_vendor = "Oracle Corporation"; |
kamg@2298 | 191 | spec_version = JDK_Version::current().major_version(); |
kamg@2298 | 192 | } |
kamg@2298 | 193 | jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
kamg@2298 | 194 | |
kamg@2298 | 195 | PropertyList_add(&_system_properties, |
kamg@2298 | 196 | new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
kamg@2298 | 197 | PropertyList_add(&_system_properties, |
kamg@2298 | 198 | new SystemProperty("java.vm.specification.version", buffer, false)); |
kamg@2298 | 199 | PropertyList_add(&_system_properties, |
kamg@2298 | 200 | new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
zgu@2219 | 201 | } |
zgu@2219 | 202 | |
kamg@677 | 203 | /** |
kamg@677 | 204 | * Provide a slightly more user-friendly way of eliminating -XX flags. |
kamg@677 | 205 | * When a flag is eliminated, it can be added to this list in order to |
kamg@677 | 206 | * continue accepting this flag on the command-line, while issuing a warning |
kamg@677 | 207 | * and ignoring the value. Once the JDK version reaches the 'accept_until' |
kamg@677 | 208 | * limit, we flatly refuse to admit the existence of the flag. This allows |
kamg@677 | 209 | * a flag to die correctly over JDK releases using HSX. |
kamg@677 | 210 | */ |
kamg@677 | 211 | typedef struct { |
kamg@677 | 212 | const char* name; |
kamg@677 | 213 | JDK_Version obsoleted_in; // when the flag went away |
kamg@677 | 214 | JDK_Version accept_until; // which version to start denying the existence |
kamg@677 | 215 | } ObsoleteFlag; |
duke@435 | 216 | |
kamg@677 | 217 | static ObsoleteFlag obsolete_jvm_flags[] = { |
kamg@677 | 218 | { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 219 | { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 220 | { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 221 | { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 222 | { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 223 | { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 224 | { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 225 | { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 226 | { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 227 | { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 228 | { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 229 | { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 230 | { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 231 | { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, |
phh@1499 | 232 | { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
phh@1499 | 233 | { "DefaultInitialRAMFraction", |
phh@1499 | 234 | JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
tonyp@2061 | 235 | { "UseDepthFirstScavengeOrder", |
tonyp@2061 | 236 | JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
ysr@2243 | 237 | { "HandlePromotionFailure", |
ysr@2243 | 238 | JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
ysr@2243 | 239 | { "MaxLiveObjectEvacuationRatio", |
ysr@2243 | 240 | JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
jcoomes@2644 | 241 | { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
jcoomes@2783 | 242 | { "UseParallelOldGCCompacting", |
jcoomes@2783 | 243 | JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
jcoomes@2783 | 244 | { "UseParallelDensePrefixUpdate", |
jcoomes@2783 | 245 | JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
jcoomes@2783 | 246 | { "UseParallelOldGCDensePrefix", |
jcoomes@2783 | 247 | JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
jrose@2742 | 248 | { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
jcoomes@2994 | 249 | { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
coleenp@4037 | 250 | { "CMSPermGenPrecleaningEnabled", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 251 | { "CMSTriggerPermRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 252 | { "CMSInitiatingPermOccupancyFraction", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 253 | { "AdaptivePermSizeWeight", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 254 | { "PermGenPadding", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 255 | { "PermMarkSweepDeadRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 256 | { "PermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 257 | { "MaxPermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 258 | { "MinPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 259 | { "MaxPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 260 | { "CMSRevisitStackSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4037 | 261 | { "PrintRevisitStats", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
coleenp@4227 | 262 | { "UseVectoredExceptions", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
jcoomes@2994 | 263 | #ifdef PRODUCT |
jcoomes@2994 | 264 | { "DesiredMethodLimit", |
jcoomes@2994 | 265 | JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
jcoomes@2994 | 266 | #endif // PRODUCT |
kamg@677 | 267 | { NULL, JDK_Version(0), JDK_Version(0) } |
kamg@677 | 268 | }; |
kamg@677 | 269 | |
kamg@677 | 270 | // Returns true if the flag is obsolete and fits into the range specified |
kamg@677 | 271 | // for being ignored. In the case that the flag is ignored, the 'version' |
kamg@677 | 272 | // value is filled in with the version number when the flag became |
kamg@677 | 273 | // obsolete so that that value can be displayed to the user. |
kamg@677 | 274 | bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { |
duke@435 | 275 | int i = 0; |
kamg@677 | 276 | assert(version != NULL, "Must provide a version buffer"); |
kamg@677 | 277 | while (obsolete_jvm_flags[i].name != NULL) { |
kamg@677 | 278 | const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; |
duke@435 | 279 | // <flag>=xxx form |
duke@435 | 280 | // [-|+]<flag> form |
kamg@677 | 281 | if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
duke@435 | 282 | ((s[0] == '+' || s[0] == '-') && |
kamg@677 | 283 | (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
kamg@677 | 284 | if (JDK_Version::current().compare(flag_status.accept_until) == -1) { |
kamg@677 | 285 | *version = flag_status.obsoleted_in; |
kamg@677 | 286 | return true; |
kamg@677 | 287 | } |
duke@435 | 288 | } |
duke@435 | 289 | i++; |
duke@435 | 290 | } |
duke@435 | 291 | return false; |
duke@435 | 292 | } |
duke@435 | 293 | |
duke@435 | 294 | // Constructs the system class path (aka boot class path) from the following |
duke@435 | 295 | // components, in order: |
duke@435 | 296 | // |
duke@435 | 297 | // prefix // from -Xbootclasspath/p:... |
duke@435 | 298 | // endorsed // the expansion of -Djava.endorsed.dirs=... |
duke@435 | 299 | // base // from os::get_system_properties() or -Xbootclasspath= |
duke@435 | 300 | // suffix // from -Xbootclasspath/a:... |
duke@435 | 301 | // |
duke@435 | 302 | // java.endorsed.dirs is a list of directories; any jar or zip files in the |
duke@435 | 303 | // directories are added to the sysclasspath just before the base. |
duke@435 | 304 | // |
duke@435 | 305 | // This could be AllStatic, but it isn't needed after argument processing is |
duke@435 | 306 | // complete. |
duke@435 | 307 | class SysClassPath: public StackObj { |
duke@435 | 308 | public: |
duke@435 | 309 | SysClassPath(const char* base); |
duke@435 | 310 | ~SysClassPath(); |
duke@435 | 311 | |
duke@435 | 312 | inline void set_base(const char* base); |
duke@435 | 313 | inline void add_prefix(const char* prefix); |
phh@966 | 314 | inline void add_suffix_to_prefix(const char* suffix); |
duke@435 | 315 | inline void add_suffix(const char* suffix); |
duke@435 | 316 | inline void reset_path(const char* base); |
duke@435 | 317 | |
duke@435 | 318 | // Expand the jar/zip files in each directory listed by the java.endorsed.dirs |
duke@435 | 319 | // property. Must be called after all command-line arguments have been |
duke@435 | 320 | // processed (in particular, -Djava.endorsed.dirs=...) and before calling |
duke@435 | 321 | // combined_path(). |
duke@435 | 322 | void expand_endorsed(); |
duke@435 | 323 | |
duke@435 | 324 | inline const char* get_base() const { return _items[_scp_base]; } |
duke@435 | 325 | inline const char* get_prefix() const { return _items[_scp_prefix]; } |
duke@435 | 326 | inline const char* get_suffix() const { return _items[_scp_suffix]; } |
duke@435 | 327 | inline const char* get_endorsed() const { return _items[_scp_endorsed]; } |
duke@435 | 328 | |
duke@435 | 329 | // Combine all the components into a single c-heap-allocated string; caller |
duke@435 | 330 | // must free the string if/when no longer needed. |
duke@435 | 331 | char* combined_path(); |
duke@435 | 332 | |
duke@435 | 333 | private: |
duke@435 | 334 | // Utility routines. |
duke@435 | 335 | static char* add_to_path(const char* path, const char* str, bool prepend); |
duke@435 | 336 | static char* add_jars_to_path(char* path, const char* directory); |
duke@435 | 337 | |
duke@435 | 338 | inline void reset_item_at(int index); |
duke@435 | 339 | |
duke@435 | 340 | // Array indices for the items that make up the sysclasspath. All except the |
duke@435 | 341 | // base are allocated in the C heap and freed by this class. |
duke@435 | 342 | enum { |
duke@435 | 343 | _scp_prefix, // from -Xbootclasspath/p:... |
duke@435 | 344 | _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... |
duke@435 | 345 | _scp_base, // the default sysclasspath |
duke@435 | 346 | _scp_suffix, // from -Xbootclasspath/a:... |
duke@435 | 347 | _scp_nitems // the number of items, must be last. |
duke@435 | 348 | }; |
duke@435 | 349 | |
duke@435 | 350 | const char* _items[_scp_nitems]; |
duke@435 | 351 | DEBUG_ONLY(bool _expansion_done;) |
duke@435 | 352 | }; |
duke@435 | 353 | |
duke@435 | 354 | SysClassPath::SysClassPath(const char* base) { |
duke@435 | 355 | memset(_items, 0, sizeof(_items)); |
duke@435 | 356 | _items[_scp_base] = base; |
duke@435 | 357 | DEBUG_ONLY(_expansion_done = false;) |
duke@435 | 358 | } |
duke@435 | 359 | |
duke@435 | 360 | SysClassPath::~SysClassPath() { |
duke@435 | 361 | // Free everything except the base. |
duke@435 | 362 | for (int i = 0; i < _scp_nitems; ++i) { |
duke@435 | 363 | if (i != _scp_base) reset_item_at(i); |
duke@435 | 364 | } |
duke@435 | 365 | DEBUG_ONLY(_expansion_done = false;) |
duke@435 | 366 | } |
duke@435 | 367 | |
duke@435 | 368 | inline void SysClassPath::set_base(const char* base) { |
duke@435 | 369 | _items[_scp_base] = base; |
duke@435 | 370 | } |
duke@435 | 371 | |
duke@435 | 372 | inline void SysClassPath::add_prefix(const char* prefix) { |
duke@435 | 373 | _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); |
duke@435 | 374 | } |
duke@435 | 375 | |
phh@966 | 376 | inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
phh@966 | 377 | _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
phh@966 | 378 | } |
phh@966 | 379 | |
duke@435 | 380 | inline void SysClassPath::add_suffix(const char* suffix) { |
duke@435 | 381 | _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); |
duke@435 | 382 | } |
duke@435 | 383 | |
duke@435 | 384 | inline void SysClassPath::reset_item_at(int index) { |
duke@435 | 385 | assert(index < _scp_nitems && index != _scp_base, "just checking"); |
duke@435 | 386 | if (_items[index] != NULL) { |
zgu@3900 | 387 | FREE_C_HEAP_ARRAY(char, _items[index], mtInternal); |
duke@435 | 388 | _items[index] = NULL; |
duke@435 | 389 | } |
duke@435 | 390 | } |
duke@435 | 391 | |
duke@435 | 392 | inline void SysClassPath::reset_path(const char* base) { |
duke@435 | 393 | // Clear the prefix and suffix. |
duke@435 | 394 | reset_item_at(_scp_prefix); |
duke@435 | 395 | reset_item_at(_scp_suffix); |
duke@435 | 396 | set_base(base); |
duke@435 | 397 | } |
duke@435 | 398 | |
duke@435 | 399 | //------------------------------------------------------------------------------ |
duke@435 | 400 | |
duke@435 | 401 | void SysClassPath::expand_endorsed() { |
duke@435 | 402 | assert(_items[_scp_endorsed] == NULL, "can only be called once."); |
duke@435 | 403 | |
duke@435 | 404 | const char* path = Arguments::get_property("java.endorsed.dirs"); |
duke@435 | 405 | if (path == NULL) { |
duke@435 | 406 | path = Arguments::get_endorsed_dir(); |
duke@435 | 407 | assert(path != NULL, "no default for java.endorsed.dirs"); |
duke@435 | 408 | } |
duke@435 | 409 | |
duke@435 | 410 | char* expanded_path = NULL; |
duke@435 | 411 | const char separator = *os::path_separator(); |
duke@435 | 412 | const char* const end = path + strlen(path); |
duke@435 | 413 | while (path < end) { |
duke@435 | 414 | const char* tmp_end = strchr(path, separator); |
duke@435 | 415 | if (tmp_end == NULL) { |
duke@435 | 416 | expanded_path = add_jars_to_path(expanded_path, path); |
duke@435 | 417 | path = end; |
duke@435 | 418 | } else { |
zgu@3900 | 419 | char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1, mtInternal); |
duke@435 | 420 | memcpy(dirpath, path, tmp_end - path); |
duke@435 | 421 | dirpath[tmp_end - path] = '\0'; |
duke@435 | 422 | expanded_path = add_jars_to_path(expanded_path, dirpath); |
zgu@3900 | 423 | FREE_C_HEAP_ARRAY(char, dirpath, mtInternal); |
duke@435 | 424 | path = tmp_end + 1; |
duke@435 | 425 | } |
duke@435 | 426 | } |
duke@435 | 427 | _items[_scp_endorsed] = expanded_path; |
duke@435 | 428 | DEBUG_ONLY(_expansion_done = true;) |
duke@435 | 429 | } |
duke@435 | 430 | |
duke@435 | 431 | // Combine the bootclasspath elements, some of which may be null, into a single |
duke@435 | 432 | // c-heap-allocated string. |
duke@435 | 433 | char* SysClassPath::combined_path() { |
duke@435 | 434 | assert(_items[_scp_base] != NULL, "empty default sysclasspath"); |
duke@435 | 435 | assert(_expansion_done, "must call expand_endorsed() first."); |
duke@435 | 436 | |
duke@435 | 437 | size_t lengths[_scp_nitems]; |
duke@435 | 438 | size_t total_len = 0; |
duke@435 | 439 | |
duke@435 | 440 | const char separator = *os::path_separator(); |
duke@435 | 441 | |
duke@435 | 442 | // Get the lengths. |
duke@435 | 443 | int i; |
duke@435 | 444 | for (i = 0; i < _scp_nitems; ++i) { |
duke@435 | 445 | if (_items[i] != NULL) { |
duke@435 | 446 | lengths[i] = strlen(_items[i]); |
duke@435 | 447 | // Include space for the separator char (or a NULL for the last item). |
duke@435 | 448 | total_len += lengths[i] + 1; |
duke@435 | 449 | } |
duke@435 | 450 | } |
duke@435 | 451 | assert(total_len > 0, "empty sysclasspath not allowed"); |
duke@435 | 452 | |
duke@435 | 453 | // Copy the _items to a single string. |
zgu@3900 | 454 | char* cp = NEW_C_HEAP_ARRAY(char, total_len, mtInternal); |
duke@435 | 455 | char* cp_tmp = cp; |
duke@435 | 456 | for (i = 0; i < _scp_nitems; ++i) { |
duke@435 | 457 | if (_items[i] != NULL) { |
duke@435 | 458 | memcpy(cp_tmp, _items[i], lengths[i]); |
duke@435 | 459 | cp_tmp += lengths[i]; |
duke@435 | 460 | *cp_tmp++ = separator; |
duke@435 | 461 | } |
duke@435 | 462 | } |
duke@435 | 463 | *--cp_tmp = '\0'; // Replace the extra separator. |
duke@435 | 464 | return cp; |
duke@435 | 465 | } |
duke@435 | 466 | |
duke@435 | 467 | // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. |
duke@435 | 468 | char* |
duke@435 | 469 | SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { |
duke@435 | 470 | char *cp; |
duke@435 | 471 | |
duke@435 | 472 | assert(str != NULL, "just checking"); |
duke@435 | 473 | if (path == NULL) { |
duke@435 | 474 | size_t len = strlen(str) + 1; |
zgu@3900 | 475 | cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
duke@435 | 476 | memcpy(cp, str, len); // copy the trailing null |
duke@435 | 477 | } else { |
duke@435 | 478 | const char separator = *os::path_separator(); |
duke@435 | 479 | size_t old_len = strlen(path); |
duke@435 | 480 | size_t str_len = strlen(str); |
duke@435 | 481 | size_t len = old_len + str_len + 2; |
duke@435 | 482 | |
duke@435 | 483 | if (prepend) { |
zgu@3900 | 484 | cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
duke@435 | 485 | char* cp_tmp = cp; |
duke@435 | 486 | memcpy(cp_tmp, str, str_len); |
duke@435 | 487 | cp_tmp += str_len; |
duke@435 | 488 | *cp_tmp = separator; |
duke@435 | 489 | memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null |
zgu@3900 | 490 | FREE_C_HEAP_ARRAY(char, path, mtInternal); |
duke@435 | 491 | } else { |
zgu@3900 | 492 | cp = REALLOC_C_HEAP_ARRAY(char, path, len, mtInternal); |
duke@435 | 493 | char* cp_tmp = cp + old_len; |
duke@435 | 494 | *cp_tmp = separator; |
duke@435 | 495 | memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null |
duke@435 | 496 | } |
duke@435 | 497 | } |
duke@435 | 498 | return cp; |
duke@435 | 499 | } |
duke@435 | 500 | |
duke@435 | 501 | // Scan the directory and append any jar or zip files found to path. |
duke@435 | 502 | // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. |
duke@435 | 503 | char* SysClassPath::add_jars_to_path(char* path, const char* directory) { |
duke@435 | 504 | DIR* dir = os::opendir(directory); |
duke@435 | 505 | if (dir == NULL) return path; |
duke@435 | 506 | |
duke@435 | 507 | char dir_sep[2] = { '\0', '\0' }; |
duke@435 | 508 | size_t directory_len = strlen(directory); |
duke@435 | 509 | const char fileSep = *os::file_separator(); |
duke@435 | 510 | if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; |
duke@435 | 511 | |
duke@435 | 512 | /* Scan the directory for jars/zips, appending them to path. */ |
duke@435 | 513 | struct dirent *entry; |
zgu@3900 | 514 | char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory), mtInternal); |
duke@435 | 515 | while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
duke@435 | 516 | const char* name = entry->d_name; |
duke@435 | 517 | const char* ext = name + strlen(name) - 4; |
duke@435 | 518 | bool isJarOrZip = ext > name && |
duke@435 | 519 | (os::file_name_strcmp(ext, ".jar") == 0 || |
duke@435 | 520 | os::file_name_strcmp(ext, ".zip") == 0); |
duke@435 | 521 | if (isJarOrZip) { |
zgu@3900 | 522 | char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name), mtInternal); |
duke@435 | 523 | sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
duke@435 | 524 | path = add_to_path(path, jarpath, false); |
zgu@3900 | 525 | FREE_C_HEAP_ARRAY(char, jarpath, mtInternal); |
duke@435 | 526 | } |
duke@435 | 527 | } |
zgu@3900 | 528 | FREE_C_HEAP_ARRAY(char, dbuf, mtInternal); |
duke@435 | 529 | os::closedir(dir); |
duke@435 | 530 | return path; |
duke@435 | 531 | } |
duke@435 | 532 | |
duke@435 | 533 | // Parses a memory size specification string. |
swamyv@924 | 534 | static bool atomull(const char *s, julong* result) { |
swamyv@924 | 535 | julong n = 0; |
hseigel@4465 | 536 | int args_read = sscanf(s, JULONG_FORMAT, &n); |
duke@435 | 537 | if (args_read != 1) { |
duke@435 | 538 | return false; |
duke@435 | 539 | } |
duke@435 | 540 | while (*s != '\0' && isdigit(*s)) { |
duke@435 | 541 | s++; |
duke@435 | 542 | } |
duke@435 | 543 | // 4705540: illegal if more characters are found after the first non-digit |
duke@435 | 544 | if (strlen(s) > 1) { |
duke@435 | 545 | return false; |
duke@435 | 546 | } |
duke@435 | 547 | switch (*s) { |
duke@435 | 548 | case 'T': case 't': |
duke@435 | 549 | *result = n * G * K; |
swamyv@924 | 550 | // Check for overflow. |
swamyv@924 | 551 | if (*result/((julong)G * K) != n) return false; |
duke@435 | 552 | return true; |
duke@435 | 553 | case 'G': case 'g': |
duke@435 | 554 | *result = n * G; |
swamyv@924 | 555 | if (*result/G != n) return false; |
duke@435 | 556 | return true; |
duke@435 | 557 | case 'M': case 'm': |
duke@435 | 558 | *result = n * M; |
swamyv@924 | 559 | if (*result/M != n) return false; |
duke@435 | 560 | return true; |
duke@435 | 561 | case 'K': case 'k': |
duke@435 | 562 | *result = n * K; |
swamyv@924 | 563 | if (*result/K != n) return false; |
duke@435 | 564 | return true; |
duke@435 | 565 | case '\0': |
duke@435 | 566 | *result = n; |
duke@435 | 567 | return true; |
duke@435 | 568 | default: |
duke@435 | 569 | return false; |
duke@435 | 570 | } |
duke@435 | 571 | } |
duke@435 | 572 | |
swamyv@924 | 573 | Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
duke@435 | 574 | if (size < min_size) return arg_too_small; |
duke@435 | 575 | // Check that size will fit in a size_t (only relevant on 32-bit) |
swamyv@924 | 576 | if (size > max_uintx) return arg_too_big; |
duke@435 | 577 | return arg_in_range; |
duke@435 | 578 | } |
duke@435 | 579 | |
duke@435 | 580 | // Describe an argument out of range error |
duke@435 | 581 | void Arguments::describe_range_error(ArgsRange errcode) { |
duke@435 | 582 | switch(errcode) { |
duke@435 | 583 | case arg_too_big: |
duke@435 | 584 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 585 | "The specified size exceeds the maximum " |
duke@435 | 586 | "representable size.\n"); |
duke@435 | 587 | break; |
duke@435 | 588 | case arg_too_small: |
duke@435 | 589 | case arg_unreadable: |
duke@435 | 590 | case arg_in_range: |
duke@435 | 591 | // do nothing for now |
duke@435 | 592 | break; |
duke@435 | 593 | default: |
duke@435 | 594 | ShouldNotReachHere(); |
duke@435 | 595 | } |
duke@435 | 596 | } |
duke@435 | 597 | |
duke@435 | 598 | static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { |
duke@435 | 599 | return CommandLineFlags::boolAtPut(name, &value, origin); |
duke@435 | 600 | } |
duke@435 | 601 | |
duke@435 | 602 | static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { |
duke@435 | 603 | double v; |
duke@435 | 604 | if (sscanf(value, "%lf", &v) != 1) { |
duke@435 | 605 | return false; |
duke@435 | 606 | } |
duke@435 | 607 | |
duke@435 | 608 | if (CommandLineFlags::doubleAtPut(name, &v, origin)) { |
duke@435 | 609 | return true; |
duke@435 | 610 | } |
duke@435 | 611 | return false; |
duke@435 | 612 | } |
duke@435 | 613 | |
duke@435 | 614 | static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { |
swamyv@924 | 615 | julong v; |
duke@435 | 616 | intx intx_v; |
duke@435 | 617 | bool is_neg = false; |
swamyv@924 | 618 | // Check the sign first since atomull() parses only unsigned values. |
duke@435 | 619 | if (*value == '-') { |
duke@435 | 620 | if (!CommandLineFlags::intxAt(name, &intx_v)) { |
duke@435 | 621 | return false; |
duke@435 | 622 | } |
duke@435 | 623 | value++; |
duke@435 | 624 | is_neg = true; |
duke@435 | 625 | } |
swamyv@924 | 626 | if (!atomull(value, &v)) { |
duke@435 | 627 | return false; |
duke@435 | 628 | } |
duke@435 | 629 | intx_v = (intx) v; |
duke@435 | 630 | if (is_neg) { |
duke@435 | 631 | intx_v = -intx_v; |
duke@435 | 632 | } |
duke@435 | 633 | if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { |
duke@435 | 634 | return true; |
duke@435 | 635 | } |
duke@435 | 636 | uintx uintx_v = (uintx) v; |
duke@435 | 637 | if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { |
duke@435 | 638 | return true; |
duke@435 | 639 | } |
phh@1499 | 640 | uint64_t uint64_t_v = (uint64_t) v; |
phh@1499 | 641 | if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { |
phh@1499 | 642 | return true; |
phh@1499 | 643 | } |
duke@435 | 644 | return false; |
duke@435 | 645 | } |
duke@435 | 646 | |
duke@435 | 647 | static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { |
duke@435 | 648 | if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; |
duke@435 | 649 | // Contract: CommandLineFlags always returns a pointer that needs freeing. |
zgu@3900 | 650 | FREE_C_HEAP_ARRAY(char, value, mtInternal); |
duke@435 | 651 | return true; |
duke@435 | 652 | } |
duke@435 | 653 | |
duke@435 | 654 | static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { |
duke@435 | 655 | const char* old_value = ""; |
duke@435 | 656 | if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; |
duke@435 | 657 | size_t old_len = old_value != NULL ? strlen(old_value) : 0; |
duke@435 | 658 | size_t new_len = strlen(new_value); |
duke@435 | 659 | const char* value; |
duke@435 | 660 | char* free_this_too = NULL; |
duke@435 | 661 | if (old_len == 0) { |
duke@435 | 662 | value = new_value; |
duke@435 | 663 | } else if (new_len == 0) { |
duke@435 | 664 | value = old_value; |
duke@435 | 665 | } else { |
zgu@3900 | 666 | char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1, mtInternal); |
duke@435 | 667 | // each new setting adds another LINE to the switch: |
duke@435 | 668 | sprintf(buf, "%s\n%s", old_value, new_value); |
duke@435 | 669 | value = buf; |
duke@435 | 670 | free_this_too = buf; |
duke@435 | 671 | } |
duke@435 | 672 | (void) CommandLineFlags::ccstrAtPut(name, &value, origin); |
duke@435 | 673 | // CommandLineFlags always returns a pointer that needs freeing. |
zgu@3900 | 674 | FREE_C_HEAP_ARRAY(char, value, mtInternal); |
duke@435 | 675 | if (free_this_too != NULL) { |
duke@435 | 676 | // CommandLineFlags made its own copy, so I must delete my own temp. buffer. |
zgu@3900 | 677 | FREE_C_HEAP_ARRAY(char, free_this_too, mtInternal); |
duke@435 | 678 | } |
duke@435 | 679 | return true; |
duke@435 | 680 | } |
duke@435 | 681 | |
duke@435 | 682 | bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { |
duke@435 | 683 | |
duke@435 | 684 | // range of acceptable characters spelled out for portability reasons |
duke@435 | 685 | #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" |
duke@435 | 686 | #define BUFLEN 255 |
duke@435 | 687 | char name[BUFLEN+1]; |
duke@435 | 688 | char dummy; |
duke@435 | 689 | |
duke@435 | 690 | if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { |
duke@435 | 691 | return set_bool_flag(name, false, origin); |
duke@435 | 692 | } |
duke@435 | 693 | if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { |
duke@435 | 694 | return set_bool_flag(name, true, origin); |
duke@435 | 695 | } |
duke@435 | 696 | |
duke@435 | 697 | char punct; |
duke@435 | 698 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { |
duke@435 | 699 | const char* value = strchr(arg, '=') + 1; |
duke@435 | 700 | Flag* flag = Flag::find_flag(name, strlen(name)); |
duke@435 | 701 | if (flag != NULL && flag->is_ccstr()) { |
duke@435 | 702 | if (flag->ccstr_accumulates()) { |
duke@435 | 703 | return append_to_string_flag(name, value, origin); |
duke@435 | 704 | } else { |
duke@435 | 705 | if (value[0] == '\0') { |
duke@435 | 706 | value = NULL; |
duke@435 | 707 | } |
duke@435 | 708 | return set_string_flag(name, value, origin); |
duke@435 | 709 | } |
duke@435 | 710 | } |
duke@435 | 711 | } |
duke@435 | 712 | |
duke@435 | 713 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { |
duke@435 | 714 | const char* value = strchr(arg, '=') + 1; |
duke@435 | 715 | // -XX:Foo:=xxx will reset the string flag to the given value. |
duke@435 | 716 | if (value[0] == '\0') { |
duke@435 | 717 | value = NULL; |
duke@435 | 718 | } |
duke@435 | 719 | return set_string_flag(name, value, origin); |
duke@435 | 720 | } |
duke@435 | 721 | |
duke@435 | 722 | #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" |
duke@435 | 723 | #define SIGNED_NUMBER_RANGE "[-0123456789]" |
duke@435 | 724 | #define NUMBER_RANGE "[0123456789]" |
duke@435 | 725 | char value[BUFLEN + 1]; |
duke@435 | 726 | char value2[BUFLEN + 1]; |
duke@435 | 727 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { |
duke@435 | 728 | // Looks like a floating-point number -- try again with more lenient format string |
duke@435 | 729 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { |
duke@435 | 730 | return set_fp_numeric_flag(name, value, origin); |
duke@435 | 731 | } |
duke@435 | 732 | } |
duke@435 | 733 | |
duke@435 | 734 | #define VALUE_RANGE "[-kmgtKMGT0123456789]" |
duke@435 | 735 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { |
duke@435 | 736 | return set_numeric_flag(name, value, origin); |
duke@435 | 737 | } |
duke@435 | 738 | |
duke@435 | 739 | return false; |
duke@435 | 740 | } |
duke@435 | 741 | |
duke@435 | 742 | void Arguments::add_string(char*** bldarray, int* count, const char* arg) { |
duke@435 | 743 | assert(bldarray != NULL, "illegal argument"); |
duke@435 | 744 | |
duke@435 | 745 | if (arg == NULL) { |
duke@435 | 746 | return; |
duke@435 | 747 | } |
duke@435 | 748 | |
duke@435 | 749 | int index = *count; |
duke@435 | 750 | |
duke@435 | 751 | // expand the array and add arg to the last element |
duke@435 | 752 | (*count)++; |
duke@435 | 753 | if (*bldarray == NULL) { |
zgu@3900 | 754 | *bldarray = NEW_C_HEAP_ARRAY(char*, *count, mtInternal); |
duke@435 | 755 | } else { |
zgu@3900 | 756 | *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count, mtInternal); |
duke@435 | 757 | } |
duke@435 | 758 | (*bldarray)[index] = strdup(arg); |
duke@435 | 759 | } |
duke@435 | 760 | |
duke@435 | 761 | void Arguments::build_jvm_args(const char* arg) { |
duke@435 | 762 | add_string(&_jvm_args_array, &_num_jvm_args, arg); |
duke@435 | 763 | } |
duke@435 | 764 | |
duke@435 | 765 | void Arguments::build_jvm_flags(const char* arg) { |
duke@435 | 766 | add_string(&_jvm_flags_array, &_num_jvm_flags, arg); |
duke@435 | 767 | } |
duke@435 | 768 | |
duke@435 | 769 | // utility function to return a string that concatenates all |
duke@435 | 770 | // strings in a given char** array |
duke@435 | 771 | const char* Arguments::build_resource_string(char** args, int count) { |
duke@435 | 772 | if (args == NULL || count == 0) { |
duke@435 | 773 | return NULL; |
duke@435 | 774 | } |
duke@435 | 775 | size_t length = strlen(args[0]) + 1; // add 1 for the null terminator |
duke@435 | 776 | for (int i = 1; i < count; i++) { |
duke@435 | 777 | length += strlen(args[i]) + 1; // add 1 for a space |
duke@435 | 778 | } |
duke@435 | 779 | char* s = NEW_RESOURCE_ARRAY(char, length); |
duke@435 | 780 | strcpy(s, args[0]); |
duke@435 | 781 | for (int j = 1; j < count; j++) { |
duke@435 | 782 | strcat(s, " "); |
duke@435 | 783 | strcat(s, args[j]); |
duke@435 | 784 | } |
duke@435 | 785 | return (const char*) s; |
duke@435 | 786 | } |
duke@435 | 787 | |
duke@435 | 788 | void Arguments::print_on(outputStream* st) { |
duke@435 | 789 | st->print_cr("VM Arguments:"); |
duke@435 | 790 | if (num_jvm_flags() > 0) { |
duke@435 | 791 | st->print("jvm_flags: "); print_jvm_flags_on(st); |
duke@435 | 792 | } |
duke@435 | 793 | if (num_jvm_args() > 0) { |
duke@435 | 794 | st->print("jvm_args: "); print_jvm_args_on(st); |
duke@435 | 795 | } |
duke@435 | 796 | st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); |
coleenp@4190 | 797 | if (_java_class_path != NULL) { |
coleenp@4190 | 798 | char* path = _java_class_path->value(); |
coleenp@4190 | 799 | st->print_cr("java_class_path (initial): %s", strlen(path) == 0 ? "<not set>" : path ); |
coleenp@4190 | 800 | } |
duke@435 | 801 | st->print_cr("Launcher Type: %s", _sun_java_launcher); |
duke@435 | 802 | } |
duke@435 | 803 | |
duke@435 | 804 | void Arguments::print_jvm_flags_on(outputStream* st) { |
duke@435 | 805 | if (_num_jvm_flags > 0) { |
duke@435 | 806 | for (int i=0; i < _num_jvm_flags; i++) { |
duke@435 | 807 | st->print("%s ", _jvm_flags_array[i]); |
duke@435 | 808 | } |
duke@435 | 809 | st->print_cr(""); |
duke@435 | 810 | } |
duke@435 | 811 | } |
duke@435 | 812 | |
duke@435 | 813 | void Arguments::print_jvm_args_on(outputStream* st) { |
duke@435 | 814 | if (_num_jvm_args > 0) { |
duke@435 | 815 | for (int i=0; i < _num_jvm_args; i++) { |
duke@435 | 816 | st->print("%s ", _jvm_args_array[i]); |
duke@435 | 817 | } |
duke@435 | 818 | st->print_cr(""); |
duke@435 | 819 | } |
duke@435 | 820 | } |
duke@435 | 821 | |
kamg@677 | 822 | bool Arguments::process_argument(const char* arg, |
kamg@677 | 823 | jboolean ignore_unrecognized, FlagValueOrigin origin) { |
kamg@677 | 824 | |
kamg@677 | 825 | JDK_Version since = JDK_Version(); |
duke@435 | 826 | |
jcoomes@2782 | 827 | if (parse_argument(arg, origin) || ignore_unrecognized) { |
jcoomes@2782 | 828 | return true; |
duke@435 | 829 | } |
jcoomes@2782 | 830 | |
hseigel@4502 | 831 | bool has_plus_minus = (*arg == '+' || *arg == '-'); |
hseigel@4502 | 832 | const char* const argname = has_plus_minus ? arg + 1 : arg; |
jcoomes@2782 | 833 | if (is_newly_obsolete(arg, &since)) { |
jcoomes@2782 | 834 | char version[256]; |
jcoomes@2782 | 835 | since.to_string(version, sizeof(version)); |
jcoomes@2782 | 836 | warning("ignoring option %s; support was removed in %s", argname, version); |
jcoomes@2782 | 837 | return true; |
jcoomes@2782 | 838 | } |
jcoomes@2782 | 839 | |
jmelvin@3650 | 840 | // For locked flags, report a custom error message if available. |
jmelvin@3650 | 841 | // Otherwise, report the standard unrecognized VM option. |
jmelvin@3650 | 842 | |
hseigel@4502 | 843 | size_t arg_len; |
hseigel@4502 | 844 | const char* equal_sign = strchr(argname, '='); |
hseigel@4502 | 845 | if (equal_sign == NULL) { |
hseigel@4502 | 846 | arg_len = strlen(argname); |
hseigel@4502 | 847 | } else { |
hseigel@4502 | 848 | arg_len = equal_sign - argname; |
hseigel@4502 | 849 | } |
hseigel@4502 | 850 | |
hseigel@4502 | 851 | Flag* found_flag = Flag::find_flag((char*)argname, arg_len, true); |
hseigel@4502 | 852 | if (found_flag != NULL) { |
jmelvin@3650 | 853 | char locked_message_buf[BUFLEN]; |
hseigel@4502 | 854 | found_flag->get_locked_message(locked_message_buf, BUFLEN); |
jmelvin@3650 | 855 | if (strlen(locked_message_buf) == 0) { |
hseigel@4502 | 856 | if (found_flag->is_bool() && !has_plus_minus) { |
hseigel@4502 | 857 | jio_fprintf(defaultStream::error_stream(), |
hseigel@4502 | 858 | "Missing +/- setting for VM option '%s'\n", argname); |
hseigel@4502 | 859 | } else if (!found_flag->is_bool() && has_plus_minus) { |
hseigel@4502 | 860 | jio_fprintf(defaultStream::error_stream(), |
hseigel@4502 | 861 | "Unexpected +/- setting in VM option '%s'\n", argname); |
hseigel@4502 | 862 | } else { |
hseigel@4502 | 863 | jio_fprintf(defaultStream::error_stream(), |
hseigel@4502 | 864 | "Improperly specified VM option '%s'\n", argname); |
hseigel@4502 | 865 | } |
jmelvin@3650 | 866 | } else { |
jmelvin@3650 | 867 | jio_fprintf(defaultStream::error_stream(), "%s", locked_message_buf); |
jmelvin@3650 | 868 | } |
kevinw@3721 | 869 | } else { |
kevinw@3721 | 870 | jio_fprintf(defaultStream::error_stream(), |
kevinw@3721 | 871 | "Unrecognized VM option '%s'\n", argname); |
jmelvin@3650 | 872 | } |
jmelvin@3650 | 873 | |
jcoomes@2782 | 874 | // allow for commandline "commenting out" options like -XX:#+Verbose |
jcoomes@2782 | 875 | return arg[0] == '#'; |
duke@435 | 876 | } |
duke@435 | 877 | |
duke@435 | 878 | bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { |
duke@435 | 879 | FILE* stream = fopen(file_name, "rb"); |
duke@435 | 880 | if (stream == NULL) { |
duke@435 | 881 | if (should_exist) { |
duke@435 | 882 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 883 | "Could not open settings file %s\n", file_name); |
duke@435 | 884 | return false; |
duke@435 | 885 | } else { |
duke@435 | 886 | return true; |
duke@435 | 887 | } |
duke@435 | 888 | } |
duke@435 | 889 | |
duke@435 | 890 | char token[1024]; |
duke@435 | 891 | int pos = 0; |
duke@435 | 892 | |
duke@435 | 893 | bool in_white_space = true; |
duke@435 | 894 | bool in_comment = false; |
duke@435 | 895 | bool in_quote = false; |
duke@435 | 896 | char quote_c = 0; |
duke@435 | 897 | bool result = true; |
duke@435 | 898 | |
duke@435 | 899 | int c = getc(stream); |
kamg@4212 | 900 | while(c != EOF && pos < (int)(sizeof(token)-1)) { |
duke@435 | 901 | if (in_white_space) { |
duke@435 | 902 | if (in_comment) { |
duke@435 | 903 | if (c == '\n') in_comment = false; |
duke@435 | 904 | } else { |
duke@435 | 905 | if (c == '#') in_comment = true; |
duke@435 | 906 | else if (!isspace(c)) { |
duke@435 | 907 | in_white_space = false; |
duke@435 | 908 | token[pos++] = c; |
duke@435 | 909 | } |
duke@435 | 910 | } |
duke@435 | 911 | } else { |
duke@435 | 912 | if (c == '\n' || (!in_quote && isspace(c))) { |
duke@435 | 913 | // token ends at newline, or at unquoted whitespace |
duke@435 | 914 | // this allows a way to include spaces in string-valued options |
duke@435 | 915 | token[pos] = '\0'; |
duke@435 | 916 | logOption(token); |
duke@435 | 917 | result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); |
duke@435 | 918 | build_jvm_flags(token); |
duke@435 | 919 | pos = 0; |
duke@435 | 920 | in_white_space = true; |
duke@435 | 921 | in_quote = false; |
duke@435 | 922 | } else if (!in_quote && (c == '\'' || c == '"')) { |
duke@435 | 923 | in_quote = true; |
duke@435 | 924 | quote_c = c; |
duke@435 | 925 | } else if (in_quote && (c == quote_c)) { |
duke@435 | 926 | in_quote = false; |
duke@435 | 927 | } else { |
duke@435 | 928 | token[pos++] = c; |
duke@435 | 929 | } |
duke@435 | 930 | } |
duke@435 | 931 | c = getc(stream); |
duke@435 | 932 | } |
duke@435 | 933 | if (pos > 0) { |
duke@435 | 934 | token[pos] = '\0'; |
duke@435 | 935 | result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); |
duke@435 | 936 | build_jvm_flags(token); |
duke@435 | 937 | } |
duke@435 | 938 | fclose(stream); |
duke@435 | 939 | return result; |
duke@435 | 940 | } |
duke@435 | 941 | |
duke@435 | 942 | //============================================================================================================= |
duke@435 | 943 | // Parsing of properties (-D) |
duke@435 | 944 | |
duke@435 | 945 | const char* Arguments::get_property(const char* key) { |
duke@435 | 946 | return PropertyList_get_value(system_properties(), key); |
duke@435 | 947 | } |
duke@435 | 948 | |
duke@435 | 949 | bool Arguments::add_property(const char* prop) { |
duke@435 | 950 | const char* eq = strchr(prop, '='); |
duke@435 | 951 | char* key; |
duke@435 | 952 | // ns must be static--its address may be stored in a SystemProperty object. |
duke@435 | 953 | const static char ns[1] = {0}; |
duke@435 | 954 | char* value = (char *)ns; |
duke@435 | 955 | |
duke@435 | 956 | size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); |
zgu@3900 | 957 | key = AllocateHeap(key_len + 1, mtInternal); |
duke@435 | 958 | strncpy(key, prop, key_len); |
duke@435 | 959 | key[key_len] = '\0'; |
duke@435 | 960 | |
duke@435 | 961 | if (eq != NULL) { |
duke@435 | 962 | size_t value_len = strlen(prop) - key_len - 1; |
zgu@3900 | 963 | value = AllocateHeap(value_len + 1, mtInternal); |
duke@435 | 964 | strncpy(value, &prop[key_len + 1], value_len + 1); |
duke@435 | 965 | } |
duke@435 | 966 | |
duke@435 | 967 | if (strcmp(key, "java.compiler") == 0) { |
duke@435 | 968 | process_java_compiler_argument(value); |
duke@435 | 969 | FreeHeap(key); |
duke@435 | 970 | if (eq != NULL) { |
duke@435 | 971 | FreeHeap(value); |
duke@435 | 972 | } |
duke@435 | 973 | return true; |
phh@1126 | 974 | } else if (strcmp(key, "sun.java.command") == 0) { |
duke@435 | 975 | _java_command = value; |
duke@435 | 976 | |
kevinw@2449 | 977 | // Record value in Arguments, but let it get passed to Java. |
phh@1126 | 978 | } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
duke@435 | 979 | // launcher.pid property is private and is processed |
duke@435 | 980 | // in process_sun_java_launcher_properties(); |
duke@435 | 981 | // the sun.java.launcher property is passed on to the java application |
duke@435 | 982 | FreeHeap(key); |
duke@435 | 983 | if (eq != NULL) { |
duke@435 | 984 | FreeHeap(value); |
duke@435 | 985 | } |
duke@435 | 986 | return true; |
phh@1126 | 987 | } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
duke@435 | 988 | // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
duke@435 | 989 | // its value without going through the property list or making a Java call. |
duke@435 | 990 | _java_vendor_url_bug = value; |
phh@1126 | 991 | } else if (strcmp(key, "sun.boot.library.path") == 0) { |
phh@1126 | 992 | PropertyList_unique_add(&_system_properties, key, value, true); |
phh@1126 | 993 | return true; |
duke@435 | 994 | } |
duke@435 | 995 | // Create new property and add at the end of the list |
duke@435 | 996 | PropertyList_unique_add(&_system_properties, key, value); |
duke@435 | 997 | return true; |
duke@435 | 998 | } |
duke@435 | 999 | |
duke@435 | 1000 | //=========================================================================================================== |
duke@435 | 1001 | // Setting int/mixed/comp mode flags |
duke@435 | 1002 | |
duke@435 | 1003 | void Arguments::set_mode_flags(Mode mode) { |
duke@435 | 1004 | // Set up default values for all flags. |
duke@435 | 1005 | // If you add a flag to any of the branches below, |
duke@435 | 1006 | // add a default value for it here. |
duke@435 | 1007 | set_java_compiler(false); |
duke@435 | 1008 | _mode = mode; |
duke@435 | 1009 | |
duke@435 | 1010 | // Ensure Agent_OnLoad has the correct initial values. |
duke@435 | 1011 | // This may not be the final mode; mode may change later in onload phase. |
duke@435 | 1012 | PropertyList_unique_add(&_system_properties, "java.vm.info", |
dholmes@2858 | 1013 | (char*)VM_Version::vm_info_string(), false); |
duke@435 | 1014 | |
duke@435 | 1015 | UseInterpreter = true; |
duke@435 | 1016 | UseCompiler = true; |
duke@435 | 1017 | UseLoopCounter = true; |
duke@435 | 1018 | |
never@2740 | 1019 | #ifndef ZERO |
never@2740 | 1020 | // Turn these off for mixed and comp. Leave them on for Zero. |
never@2740 | 1021 | if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
never@2873 | 1022 | UseFastAccessorMethods = (mode == _int); |
never@2740 | 1023 | } |
never@2740 | 1024 | if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
never@2873 | 1025 | UseFastEmptyMethods = (mode == _int); |
never@2740 | 1026 | } |
never@2740 | 1027 | #endif |
never@2740 | 1028 | |
duke@435 | 1029 | // Default values may be platform/compiler dependent - |
duke@435 | 1030 | // use the saved values |
duke@435 | 1031 | ClipInlining = Arguments::_ClipInlining; |
duke@435 | 1032 | AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; |
duke@435 | 1033 | UseOnStackReplacement = Arguments::_UseOnStackReplacement; |
duke@435 | 1034 | BackgroundCompilation = Arguments::_BackgroundCompilation; |
duke@435 | 1035 | |
duke@435 | 1036 | // Change from defaults based on mode |
duke@435 | 1037 | switch (mode) { |
duke@435 | 1038 | default: |
duke@435 | 1039 | ShouldNotReachHere(); |
duke@435 | 1040 | break; |
duke@435 | 1041 | case _int: |
duke@435 | 1042 | UseCompiler = false; |
duke@435 | 1043 | UseLoopCounter = false; |
duke@435 | 1044 | AlwaysCompileLoopMethods = false; |
duke@435 | 1045 | UseOnStackReplacement = false; |
duke@435 | 1046 | break; |
duke@435 | 1047 | case _mixed: |
duke@435 | 1048 | // same as default |
duke@435 | 1049 | break; |
duke@435 | 1050 | case _comp: |
duke@435 | 1051 | UseInterpreter = false; |
duke@435 | 1052 | BackgroundCompilation = false; |
duke@435 | 1053 | ClipInlining = false; |
iveresov@3387 | 1054 | // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
iveresov@3387 | 1055 | // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
iveresov@3387 | 1056 | // compile a level 4 (C2) and then continue executing it. |
iveresov@3387 | 1057 | if (TieredCompilation) { |
iveresov@3387 | 1058 | Tier3InvokeNotifyFreqLog = 0; |
iveresov@3387 | 1059 | Tier4InvocationThreshold = 0; |
iveresov@3387 | 1060 | } |
duke@435 | 1061 | break; |
duke@435 | 1062 | } |
duke@435 | 1063 | } |
duke@435 | 1064 | |
duke@435 | 1065 | // Conflict: required to use shared spaces (-Xshare:on), but |
duke@435 | 1066 | // incompatible command line options were chosen. |
duke@435 | 1067 | |
duke@435 | 1068 | static void no_shared_spaces() { |
duke@435 | 1069 | if (RequireSharedSpaces) { |
duke@435 | 1070 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1071 | "Class data sharing is inconsistent with other specified options.\n"); |
duke@435 | 1072 | vm_exit_during_initialization("Unable to use shared archive.", NULL); |
duke@435 | 1073 | } else { |
duke@435 | 1074 | FLAG_SET_DEFAULT(UseSharedSpaces, false); |
duke@435 | 1075 | } |
duke@435 | 1076 | } |
duke@435 | 1077 | |
iveresov@2138 | 1078 | void Arguments::set_tiered_flags() { |
iveresov@2630 | 1079 | // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
iveresov@2138 | 1080 | if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
iveresov@2630 | 1081 | FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
iveresov@2138 | 1082 | } |
iveresov@2138 | 1083 | if (CompilationPolicyChoice < 2) { |
iveresov@2138 | 1084 | vm_exit_during_initialization( |
iveresov@2138 | 1085 | "Incompatible compilation policy selected", NULL); |
iveresov@2138 | 1086 | } |
iveresov@2246 | 1087 | // Increase the code cache size - tiered compiles a lot more. |
iveresov@2138 | 1088 | if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
morris@4584 | 1089 | FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 5); |
iveresov@2138 | 1090 | } |
iveresov@2138 | 1091 | } |
iveresov@2138 | 1092 | |
jprovino@4542 | 1093 | #if INCLUDE_ALL_GCS |
jcoomes@3465 | 1094 | static void disable_adaptive_size_policy(const char* collector_name) { |
jcoomes@3465 | 1095 | if (UseAdaptiveSizePolicy) { |
jcoomes@3465 | 1096 | if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { |
jcoomes@3465 | 1097 | warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", |
jcoomes@3465 | 1098 | collector_name); |
jcoomes@3465 | 1099 | } |
jcoomes@3465 | 1100 | FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
jcoomes@3465 | 1101 | } |
jcoomes@3465 | 1102 | } |
jcoomes@3465 | 1103 | |
duke@435 | 1104 | void Arguments::set_parnew_gc_flags() { |
phh@1499 | 1105 | assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
ysr@777 | 1106 | "control point invariant"); |
ysr@777 | 1107 | assert(UseParNewGC, "Error"); |
duke@435 | 1108 | |
jcoomes@3465 | 1109 | // Turn off AdaptiveSizePolicy for parnew until it is complete. |
jcoomes@3465 | 1110 | disable_adaptive_size_policy("UseParNewGC"); |
jmasa@445 | 1111 | |
brutisso@4387 | 1112 | if (FLAG_IS_DEFAULT(ParallelGCThreads)) { |
brutisso@4387 | 1113 | FLAG_SET_DEFAULT(ParallelGCThreads, Abstract_VM_Version::parallel_worker_threads()); |
brutisso@4387 | 1114 | assert(ParallelGCThreads > 0, "We should always have at least one thread by default"); |
brutisso@4387 | 1115 | } else if (ParallelGCThreads == 0) { |
brutisso@4387 | 1116 | jio_fprintf(defaultStream::error_stream(), |
brutisso@4387 | 1117 | "The ParNew GC can not be combined with -XX:ParallelGCThreads=0\n"); |
brutisso@4387 | 1118 | vm_exit(1); |
brutisso@4387 | 1119 | } |
brutisso@4387 | 1120 | |
brutisso@4387 | 1121 | // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
brutisso@4387 | 1122 | // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
brutisso@4387 | 1123 | // we set them to 1024 and 1024. |
brutisso@4387 | 1124 | // See CR 6362902. |
brutisso@4387 | 1125 | if (FLAG_IS_DEFAULT(YoungPLABSize)) { |
brutisso@4387 | 1126 | FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); |
brutisso@4387 | 1127 | } |
brutisso@4387 | 1128 | if (FLAG_IS_DEFAULT(OldPLABSize)) { |
brutisso@4387 | 1129 | FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); |
brutisso@4387 | 1130 | } |
brutisso@4387 | 1131 | |
brutisso@4387 | 1132 | // AlwaysTenure flag should make ParNew promote all at first collection. |
brutisso@4387 | 1133 | // See CR 6362902. |
brutisso@4387 | 1134 | if (AlwaysTenure) { |
brutisso@4387 | 1135 | FLAG_SET_CMDLINE(uintx, MaxTenuringThreshold, 0); |
brutisso@4387 | 1136 | } |
brutisso@4387 | 1137 | // When using compressed oops, we use local overflow stacks, |
brutisso@4387 | 1138 | // rather than using a global overflow list chained through |
brutisso@4387 | 1139 | // the klass word of the object's pre-image. |
brutisso@4387 | 1140 | if (UseCompressedOops && !ParGCUseLocalOverflow) { |
brutisso@4387 | 1141 | if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { |
brutisso@4387 | 1142 | warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); |
duke@435 | 1143 | } |
brutisso@4387 | 1144 | FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); |
duke@435 | 1145 | } |
brutisso@4387 | 1146 | assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); |
duke@435 | 1147 | } |
duke@435 | 1148 | |
duke@435 | 1149 | // Adjust some sizes to suit CMS and/or ParNew needs; these work well on |
duke@435 | 1150 | // sparc/solaris for certain applications, but would gain from |
duke@435 | 1151 | // further optimization and tuning efforts, and would almost |
duke@435 | 1152 | // certainly gain from analysis of platform and environment. |
duke@435 | 1153 | void Arguments::set_cms_and_parnew_gc_flags() { |
phh@1499 | 1154 | assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
jmasa@445 | 1155 | assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
jmasa@445 | 1156 | |
duke@435 | 1157 | // If we are using CMS, we prefer to UseParNewGC, |
duke@435 | 1158 | // unless explicitly forbidden. |
ysr@777 | 1159 | if (FLAG_IS_DEFAULT(UseParNewGC)) { |
jmasa@445 | 1160 | FLAG_SET_ERGO(bool, UseParNewGC, true); |
duke@435 | 1161 | } |
duke@435 | 1162 | |
jprovino@4165 | 1163 | // Turn off AdaptiveSizePolicy by default for cms until it is complete. |
jcoomes@3465 | 1164 | disable_adaptive_size_policy("UseConcMarkSweepGC"); |
duke@435 | 1165 | |
duke@435 | 1166 | // In either case, adjust ParallelGCThreads and/or UseParNewGC |
duke@435 | 1167 | // as needed. |
jmasa@445 | 1168 | if (UseParNewGC) { |
jmasa@445 | 1169 | set_parnew_gc_flags(); |
duke@435 | 1170 | } |
duke@435 | 1171 | |
ysr@2650 | 1172 | // MaxHeapSize is aligned down in collectorPolicy |
ysr@2650 | 1173 | size_t max_heap = align_size_down(MaxHeapSize, |
ysr@2650 | 1174 | CardTableRS::ct_max_alignment_constraint()); |
ysr@2650 | 1175 | |
duke@435 | 1176 | // Now make adjustments for CMS |
ysr@2650 | 1177 | intx tenuring_default = (intx)6; |
ysr@2650 | 1178 | size_t young_gen_per_worker = CMSYoungGenPerWorker; |
ysr@2650 | 1179 | |
ysr@2650 | 1180 | // Preferred young gen size for "short" pauses: |
ysr@2650 | 1181 | // upper bound depends on # of threads and NewRatio. |
duke@435 | 1182 | const uintx parallel_gc_threads = |
duke@435 | 1183 | (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); |
duke@435 | 1184 | const size_t preferred_max_new_size_unaligned = |
ysr@2650 | 1185 | MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
ysr@2650 | 1186 | size_t preferred_max_new_size = |
duke@435 | 1187 | align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
duke@435 | 1188 | |
duke@435 | 1189 | // Unless explicitly requested otherwise, size young gen |
ysr@2650 | 1190 | // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
jmasa@1321 | 1191 | |
jmasa@1321 | 1192 | // If either MaxNewSize or NewRatio is set on the command line, |
jmasa@1321 | 1193 | // assume the user is trying to set the size of the young gen. |
jmasa@1321 | 1194 | if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
jmasa@1321 | 1195 | |
jmasa@1321 | 1196 | // Set MaxNewSize to our calculated preferred_max_new_size unless |
jmasa@1321 | 1197 | // NewSize was set on the command line and it is larger than |
jmasa@1321 | 1198 | // preferred_max_new_size. |
duke@435 | 1199 | if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
jmasa@448 | 1200 | FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
duke@435 | 1201 | } else { |
jmasa@448 | 1202 | FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
duke@435 | 1203 | } |
phh@1499 | 1204 | if (PrintGCDetails && Verbose) { |
jmasa@448 | 1205 | // Too early to use gclog_or_tty |
ysr@2650 | 1206 | tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
jmasa@1321 | 1207 | } |
jmasa@1321 | 1208 | |
jmasa@1321 | 1209 | // Code along this path potentially sets NewSize and OldSize |
jmasa@1321 | 1210 | |
ysr@2650 | 1211 | assert(max_heap >= InitialHeapSize, "Error"); |
ysr@2650 | 1212 | assert(max_heap >= NewSize, "Error"); |
duke@435 | 1213 | |
phh@1499 | 1214 | if (PrintGCDetails && Verbose) { |
jmasa@448 | 1215 | // Too early to use gclog_or_tty |
jmasa@448 | 1216 | tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
jmasa@448 | 1217 | " initial_heap_size: " SIZE_FORMAT |
jmasa@448 | 1218 | " max_heap: " SIZE_FORMAT, |
phh@1499 | 1219 | min_heap_size(), InitialHeapSize, max_heap); |
jmasa@448 | 1220 | } |
ysr@2650 | 1221 | size_t min_new = preferred_max_new_size; |
ysr@2650 | 1222 | if (FLAG_IS_CMDLINE(NewSize)) { |
ysr@2650 | 1223 | min_new = NewSize; |
ysr@2650 | 1224 | } |
ysr@2650 | 1225 | if (max_heap > min_new && min_heap_size() > min_new) { |
duke@435 | 1226 | // Unless explicitly requested otherwise, make young gen |
duke@435 | 1227 | // at least min_new, and at most preferred_max_new_size. |
duke@435 | 1228 | if (FLAG_IS_DEFAULT(NewSize)) { |
jmasa@448 | 1229 | FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
jmasa@448 | 1230 | FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
phh@1499 | 1231 | if (PrintGCDetails && Verbose) { |
jmasa@448 | 1232 | // Too early to use gclog_or_tty |
ysr@2650 | 1233 | tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
jmasa@448 | 1234 | } |
duke@435 | 1235 | } |
duke@435 | 1236 | // Unless explicitly requested otherwise, size old gen |
ysr@2650 | 1237 | // so it's NewRatio x of NewSize. |
duke@435 | 1238 | if (FLAG_IS_DEFAULT(OldSize)) { |
duke@435 | 1239 | if (max_heap > NewSize) { |
ysr@2650 | 1240 | FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
phh@1499 | 1241 | if (PrintGCDetails && Verbose) { |
jmasa@448 | 1242 | // Too early to use gclog_or_tty |
ysr@2650 | 1243 | tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
jmasa@448 | 1244 | } |
duke@435 | 1245 | } |
duke@435 | 1246 | } |
duke@435 | 1247 | } |
duke@435 | 1248 | } |
duke@435 | 1249 | // Unless explicitly requested otherwise, definitely |
duke@435 | 1250 | // promote all objects surviving "tenuring_default" scavenges. |
duke@435 | 1251 | if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && |
duke@435 | 1252 | FLAG_IS_DEFAULT(SurvivorRatio)) { |
jwilhelm@4129 | 1253 | FLAG_SET_ERGO(uintx, MaxTenuringThreshold, tenuring_default); |
duke@435 | 1254 | } |
duke@435 | 1255 | // If we decided above (or user explicitly requested) |
duke@435 | 1256 | // `promote all' (via MaxTenuringThreshold := 0), |
duke@435 | 1257 | // prefer minuscule survivor spaces so as not to waste |
duke@435 | 1258 | // space for (non-existent) survivors |
duke@435 | 1259 | if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { |
jwilhelm@4576 | 1260 | FLAG_SET_ERGO(uintx, SurvivorRatio, MAX2((uintx)1024, SurvivorRatio)); |
duke@435 | 1261 | } |
duke@435 | 1262 | // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, |
duke@435 | 1263 | // set CMSParPromoteBlocksToClaim equal to OldPLABSize. |
duke@435 | 1264 | // This is done in order to make ParNew+CMS configuration to work |
duke@435 | 1265 | // with YoungPLABSize and OldPLABSize options. |
duke@435 | 1266 | // See CR 6362902. |
duke@435 | 1267 | if (!FLAG_IS_DEFAULT(OldPLABSize)) { |
duke@435 | 1268 | if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
jmasa@448 | 1269 | // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
jmasa@448 | 1270 | // is. In this situtation let CMSParPromoteBlocksToClaim follow |
jmasa@448 | 1271 | // the value (either from the command line or ergonomics) of |
jmasa@448 | 1272 | // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
jmasa@448 | 1273 | FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
ysr@1580 | 1274 | } else { |
duke@435 | 1275 | // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
duke@435 | 1276 | // CMSParPromoteBlocksToClaim is a collector-specific flag, so |
duke@435 | 1277 | // we'll let it to take precedence. |
duke@435 | 1278 | jio_fprintf(defaultStream::error_stream(), |
jmasa@1321 | 1279 | "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
jmasa@1321 | 1280 | " options are specified for the CMS collector." |
jmasa@1321 | 1281 | " CMSParPromoteBlocksToClaim will take precedence.\n"); |
duke@435 | 1282 | } |
duke@435 | 1283 | } |
ysr@1580 | 1284 | if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
ysr@1580 | 1285 | // OldPLAB sizing manually turned off: Use a larger default setting, |
ysr@1580 | 1286 | // unless it was manually specified. This is because a too-low value |
ysr@1580 | 1287 | // will slow down scavenges. |
ysr@1580 | 1288 | if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
ysr@1580 | 1289 | FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
ysr@1580 | 1290 | } |
ysr@1580 | 1291 | } |
ysr@1580 | 1292 | // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
ysr@1580 | 1293 | FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
ysr@1580 | 1294 | // If either of the static initialization defaults have changed, note this |
ysr@1580 | 1295 | // modification. |
ysr@1580 | 1296 | if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
ysr@1580 | 1297 | CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
ysr@1580 | 1298 | } |
jmasa@1719 | 1299 | if (PrintGCDetails && Verbose) { |
jmasa@1719 | 1300 | tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
jmasa@1719 | 1301 | MarkStackSize / K, MarkStackSizeMax / K); |
jmasa@1719 | 1302 | tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
jmasa@1719 | 1303 | } |
duke@435 | 1304 | } |
jprovino@4542 | 1305 | #endif // INCLUDE_ALL_GCS |
duke@435 | 1306 | |
kvn@1926 | 1307 | void set_object_alignment() { |
kvn@1926 | 1308 | // Object alignment. |
kvn@1926 | 1309 | assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
kvn@1926 | 1310 | MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
kvn@1926 | 1311 | assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
kvn@1926 | 1312 | MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
kvn@1926 | 1313 | assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
kvn@1926 | 1314 | MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
kvn@1926 | 1315 | |
kvn@1926 | 1316 | LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
kvn@1926 | 1317 | LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
kvn@1926 | 1318 | |
kvn@1926 | 1319 | // Oop encoding heap max |
kvn@1926 | 1320 | OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
kvn@1926 | 1321 | |
jprovino@4542 | 1322 | #if INCLUDE_ALL_GCS |
kvn@1926 | 1323 | // Set CMS global values |
kvn@1926 | 1324 | CompactibleFreeListSpace::set_cms_values(); |
jprovino@4542 | 1325 | #endif // INCLUDE_ALL_GCS |
kvn@1926 | 1326 | } |
kvn@1926 | 1327 | |
kvn@1926 | 1328 | bool verify_object_alignment() { |
kvn@1926 | 1329 | // Object alignment. |
kvn@1926 | 1330 | if (!is_power_of_2(ObjectAlignmentInBytes)) { |
kvn@1926 | 1331 | jio_fprintf(defaultStream::error_stream(), |
kvn@2184 | 1332 | "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
kvn@2184 | 1333 | (int)ObjectAlignmentInBytes); |
kvn@1926 | 1334 | return false; |
kvn@1926 | 1335 | } |
kvn@1926 | 1336 | if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
kvn@1926 | 1337 | jio_fprintf(defaultStream::error_stream(), |
kvn@2184 | 1338 | "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
kvn@2184 | 1339 | (int)ObjectAlignmentInBytes, BytesPerLong); |
kvn@2184 | 1340 | return false; |
kvn@2184 | 1341 | } |
kvn@2184 | 1342 | // It does not make sense to have big object alignment |
kvn@2184 | 1343 | // since a space lost due to alignment will be greater |
kvn@2184 | 1344 | // then a saved space from compressed oops. |
kvn@2184 | 1345 | if ((int)ObjectAlignmentInBytes > 256) { |
kvn@2184 | 1346 | jio_fprintf(defaultStream::error_stream(), |
hseigel@4397 | 1347 | "error: ObjectAlignmentInBytes=%d must not be greater than 256\n", |
kvn@2184 | 1348 | (int)ObjectAlignmentInBytes); |
kvn@2184 | 1349 | return false; |
kvn@2184 | 1350 | } |
kvn@2184 | 1351 | // In case page size is very small. |
kvn@2184 | 1352 | if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
kvn@2184 | 1353 | jio_fprintf(defaultStream::error_stream(), |
hseigel@4397 | 1354 | "error: ObjectAlignmentInBytes=%d must be less than page size %d\n", |
kvn@2184 | 1355 | (int)ObjectAlignmentInBytes, os::vm_page_size()); |
kvn@1926 | 1356 | return false; |
kvn@1926 | 1357 | } |
kvn@1926 | 1358 | return true; |
kvn@1926 | 1359 | } |
kvn@1926 | 1360 | |
coleenp@570 | 1361 | inline uintx max_heap_for_compressed_oops() { |
kvn@2305 | 1362 | // Avoid sign flip. |
coleenp@4037 | 1363 | if (OopEncodingHeapMax < ClassMetaspaceSize + os::vm_page_size()) { |
kvn@2305 | 1364 | return 0; |
kvn@2305 | 1365 | } |
coleenp@4037 | 1366 | LP64_ONLY(return OopEncodingHeapMax - ClassMetaspaceSize - os::vm_page_size()); |
phh@1499 | 1367 | NOT_LP64(ShouldNotReachHere(); return 0); |
coleenp@570 | 1368 | } |
coleenp@570 | 1369 | |
duke@435 | 1370 | bool Arguments::should_auto_select_low_pause_collector() { |
duke@435 | 1371 | if (UseAutoGCSelectPolicy && |
duke@435 | 1372 | !FLAG_IS_DEFAULT(MaxGCPauseMillis) && |
duke@435 | 1373 | (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { |
duke@435 | 1374 | if (PrintGCDetails) { |
duke@435 | 1375 | // Cannot use gclog_or_tty yet. |
duke@435 | 1376 | tty->print_cr("Automatic selection of the low pause collector" |
duke@435 | 1377 | " based on pause goal of %d (ms)", MaxGCPauseMillis); |
duke@435 | 1378 | } |
duke@435 | 1379 | return true; |
duke@435 | 1380 | } |
duke@435 | 1381 | return false; |
duke@435 | 1382 | } |
duke@435 | 1383 | |
duke@435 | 1384 | void Arguments::set_ergonomics_flags() { |
duke@435 | 1385 | |
iveresov@3573 | 1386 | if (os::is_server_class_machine()) { |
duke@435 | 1387 | // If no other collector is requested explicitly, |
duke@435 | 1388 | // let the VM select the collector based on |
duke@435 | 1389 | // machine class and automatic selection policy. |
duke@435 | 1390 | if (!UseSerialGC && |
duke@435 | 1391 | !UseConcMarkSweepGC && |
ysr@777 | 1392 | !UseG1GC && |
duke@435 | 1393 | !UseParNewGC && |
duke@435 | 1394 | FLAG_IS_DEFAULT(UseParallelGC)) { |
duke@435 | 1395 | if (should_auto_select_low_pause_collector()) { |
duke@435 | 1396 | FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); |
duke@435 | 1397 | } else { |
duke@435 | 1398 | FLAG_SET_ERGO(bool, UseParallelGC, true); |
duke@435 | 1399 | } |
coleenp@4037 | 1400 | } |
coleenp@4037 | 1401 | // Shared spaces work fine with other GCs but causes bytecode rewriting |
coleenp@4037 | 1402 | // to be disabled, which hurts interpreter performance and decreases |
coleenp@4037 | 1403 | // server performance. On server class machines, keep the default |
coleenp@4037 | 1404 | // off unless it is asked for. Future work: either add bytecode rewriting |
coleenp@4037 | 1405 | // at link time, or rewrite bytecodes in non-shared methods. |
coleenp@4037 | 1406 | if (!DumpSharedSpaces && !RequireSharedSpaces) { |
duke@435 | 1407 | no_shared_spaces(); |
duke@435 | 1408 | } |
duke@435 | 1409 | } |
coleenp@548 | 1410 | |
never@1445 | 1411 | #ifndef ZERO |
coleenp@548 | 1412 | #ifdef _LP64 |
coleenp@548 | 1413 | // Check that UseCompressedOops can be set with the max heap size allocated |
coleenp@548 | 1414 | // by ergonomics. |
coleenp@622 | 1415 | if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
iveresov@2138 | 1416 | #if !defined(COMPILER1) || defined(TIERED) |
johnc@2535 | 1417 | if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
kvn@1367 | 1418 | FLAG_SET_ERGO(bool, UseCompressedOops, true); |
coleenp@548 | 1419 | } |
roland@1495 | 1420 | #endif |
coleenp@760 | 1421 | #ifdef _WIN64 |
coleenp@760 | 1422 | if (UseLargePages && UseCompressedOops) { |
coleenp@760 | 1423 | // Cannot allocate guard pages for implicit checks in indexed addressing |
coleenp@760 | 1424 | // mode, when large pages are specified on windows. |
kvn@1077 | 1425 | // This flag could be switched ON if narrow oop base address is set to 0, |
kvn@1077 | 1426 | // see code in Universe::initialize_heap(). |
kvn@1077 | 1427 | Universe::set_narrow_oop_use_implicit_null_checks(false); |
coleenp@760 | 1428 | } |
coleenp@760 | 1429 | #endif // _WIN64 |
coleenp@548 | 1430 | } else { |
coleenp@548 | 1431 | if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
ysr@779 | 1432 | warning("Max heap size too large for Compressed Oops"); |
coleenp@548 | 1433 | FLAG_SET_DEFAULT(UseCompressedOops, false); |
coleenp@4037 | 1434 | FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
coleenp@548 | 1435 | } |
coleenp@548 | 1436 | } |
coleenp@4037 | 1437 | // UseCompressedOops must be on for UseCompressedKlassPointers to be on. |
coleenp@4037 | 1438 | if (!UseCompressedOops) { |
coleenp@4037 | 1439 | if (UseCompressedKlassPointers) { |
coleenp@4037 | 1440 | warning("UseCompressedKlassPointers requires UseCompressedOops"); |
coleenp@4037 | 1441 | } |
coleenp@4037 | 1442 | FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
coleenp@4037 | 1443 | } else { |
coleenp@4037 | 1444 | // Turn on UseCompressedKlassPointers too |
roland@4159 | 1445 | if (FLAG_IS_DEFAULT(UseCompressedKlassPointers)) { |
roland@4159 | 1446 | FLAG_SET_ERGO(bool, UseCompressedKlassPointers, true); |
roland@4159 | 1447 | } |
coleenp@4048 | 1448 | // Set the ClassMetaspaceSize to something that will not need to be |
coleenp@4048 | 1449 | // expanded, since it cannot be expanded. |
hseigel@4523 | 1450 | if (UseCompressedKlassPointers) { |
hseigel@4523 | 1451 | if (ClassMetaspaceSize > KlassEncodingMetaspaceMax) { |
hseigel@4523 | 1452 | warning("Class metaspace size is too large for UseCompressedKlassPointers"); |
hseigel@4523 | 1453 | FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
hseigel@4523 | 1454 | } else if (FLAG_IS_DEFAULT(ClassMetaspaceSize)) { |
hseigel@4523 | 1455 | // 100,000 classes seems like a good size, so 100M assumes around 1K |
hseigel@4523 | 1456 | // per klass. The vtable and oopMap is embedded so we don't have a fixed |
hseigel@4523 | 1457 | // size per klass. Eventually, this will be parameterized because it |
hseigel@4523 | 1458 | // would also be useful to determine the optimal size of the |
hseigel@4523 | 1459 | // systemDictionary. |
hseigel@4523 | 1460 | FLAG_SET_ERGO(uintx, ClassMetaspaceSize, 100*M); |
hseigel@4523 | 1461 | } |
coleenp@4048 | 1462 | } |
coleenp@4037 | 1463 | } |
coleenp@548 | 1464 | // Also checks that certain machines are slower with compressed oops |
coleenp@548 | 1465 | // in vm_version initialization code. |
coleenp@548 | 1466 | #endif // _LP64 |
never@1445 | 1467 | #endif // !ZERO |
duke@435 | 1468 | } |
duke@435 | 1469 | |
duke@435 | 1470 | void Arguments::set_parallel_gc_flags() { |
ysr@777 | 1471 | assert(UseParallelGC || UseParallelOldGC, "Error"); |
jcoomes@3506 | 1472 | // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
jcoomes@3506 | 1473 | if (FLAG_IS_DEFAULT(UseParallelOldGC)) { |
jcoomes@3506 | 1474 | FLAG_SET_DEFAULT(UseParallelOldGC, true); |
duke@435 | 1475 | } |
jcoomes@3506 | 1476 | FLAG_SET_DEFAULT(UseParallelGC, true); |
duke@435 | 1477 | |
duke@435 | 1478 | // If no heap maximum was requested explicitly, use some reasonable fraction |
duke@435 | 1479 | // of the physical memory, up to a maximum of 1GB. |
brutisso@4407 | 1480 | FLAG_SET_DEFAULT(ParallelGCThreads, |
brutisso@4407 | 1481 | Abstract_VM_Version::parallel_worker_threads()); |
brutisso@4407 | 1482 | if (ParallelGCThreads == 0) { |
brutisso@4407 | 1483 | jio_fprintf(defaultStream::error_stream(), |
brutisso@4407 | 1484 | "The Parallel GC can not be combined with -XX:ParallelGCThreads=0\n"); |
brutisso@4407 | 1485 | vm_exit(1); |
brutisso@4407 | 1486 | } |
brutisso@4407 | 1487 | |
brutisso@4407 | 1488 | |
brutisso@4407 | 1489 | // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
brutisso@4407 | 1490 | // SurvivorRatio has been set, reset their default values to SurvivorRatio + |
brutisso@4407 | 1491 | // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. |
brutisso@4407 | 1492 | // See CR 6362902 for details. |
brutisso@4407 | 1493 | if (!FLAG_IS_DEFAULT(SurvivorRatio)) { |
brutisso@4407 | 1494 | if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { |
brutisso@4407 | 1495 | FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); |
duke@435 | 1496 | } |
brutisso@4407 | 1497 | if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { |
brutisso@4407 | 1498 | FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); |
brutisso@4407 | 1499 | } |
brutisso@4407 | 1500 | } |
brutisso@4407 | 1501 | |
brutisso@4407 | 1502 | if (UseParallelOldGC) { |
brutisso@4407 | 1503 | // Par compact uses lower default values since they are treated as |
brutisso@4407 | 1504 | // minimums. These are different defaults because of the different |
brutisso@4407 | 1505 | // interpretation and are not ergonomically set. |
brutisso@4407 | 1506 | if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
brutisso@4407 | 1507 | FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
duke@435 | 1508 | } |
duke@435 | 1509 | } |
duke@435 | 1510 | } |
duke@435 | 1511 | |
ysr@777 | 1512 | void Arguments::set_g1_gc_flags() { |
ysr@777 | 1513 | assert(UseG1GC, "Error"); |
ysr@777 | 1514 | #ifdef COMPILER1 |
ysr@777 | 1515 | FastTLABRefill = false; |
ysr@777 | 1516 | #endif |
ysr@777 | 1517 | FLAG_SET_DEFAULT(ParallelGCThreads, |
ysr@777 | 1518 | Abstract_VM_Version::parallel_worker_threads()); |
ysr@777 | 1519 | if (ParallelGCThreads == 0) { |
ysr@777 | 1520 | FLAG_SET_DEFAULT(ParallelGCThreads, |
johnc@1186 | 1521 | Abstract_VM_Version::parallel_worker_threads()); |
ysr@777 | 1522 | } |
johnc@1186 | 1523 | |
johnc@4333 | 1524 | // MarkStackSize will be set (if it hasn't been set by the user) |
johnc@4333 | 1525 | // when concurrent marking is initialized. |
johnc@4333 | 1526 | // Its value will be based upon the number of parallel marking threads. |
johnc@4333 | 1527 | // But we do set the maximum mark stack size here. |
johnc@4333 | 1528 | if (FLAG_IS_DEFAULT(MarkStackSizeMax)) { |
johnc@4333 | 1529 | FLAG_SET_DEFAULT(MarkStackSizeMax, 128 * TASKQUEUE_SIZE); |
jmasa@1719 | 1530 | } |
tonyp@1791 | 1531 | |
tonyp@1791 | 1532 | if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { |
tonyp@1791 | 1533 | // In G1, we want the default GC overhead goal to be higher than |
tonyp@1791 | 1534 | // say in PS. So we set it here to 10%. Otherwise the heap might |
tonyp@1791 | 1535 | // be expanded more aggressively than we would like it to. In |
tonyp@1791 | 1536 | // fact, even 10% seems to not be high enough in some cases |
tonyp@1791 | 1537 | // (especially small GC stress tests that the main thing they do |
tonyp@1791 | 1538 | // is allocation). We might consider increase it further. |
tonyp@1791 | 1539 | FLAG_SET_DEFAULT(GCTimeRatio, 9); |
tonyp@1791 | 1540 | } |
johnc@4333 | 1541 | |
johnc@4333 | 1542 | if (PrintGCDetails && Verbose) { |
johnc@4333 | 1543 | tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
johnc@4333 | 1544 | MarkStackSize / K, MarkStackSizeMax / K); |
johnc@4333 | 1545 | tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
johnc@4333 | 1546 | } |
ysr@777 | 1547 | } |
ysr@777 | 1548 | |
phh@1499 | 1549 | void Arguments::set_heap_size() { |
phh@1499 | 1550 | if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { |
phh@1499 | 1551 | // Deprecated flag |
phh@1499 | 1552 | FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); |
phh@1499 | 1553 | } |
phh@1499 | 1554 | |
phh@1499 | 1555 | const julong phys_mem = |
phh@1499 | 1556 | FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) |
phh@1499 | 1557 | : (julong)MaxRAM; |
phh@1499 | 1558 | |
phh@1499 | 1559 | // If the maximum heap size has not been set with -Xmx, |
phh@1499 | 1560 | // then set it as fraction of the size of physical memory, |
phh@1499 | 1561 | // respecting the maximum and minimum sizes of the heap. |
ysr@777 | 1562 | if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
phh@1499 | 1563 | julong reasonable_max = phys_mem / MaxRAMFraction; |
phh@1499 | 1564 | |
phh@1499 | 1565 | if (phys_mem <= MaxHeapSize * MinRAMFraction) { |
phh@1499 | 1566 | // Small physical memory, so use a minimum fraction of it for the heap |
phh@1499 | 1567 | reasonable_max = phys_mem / MinRAMFraction; |
phh@1499 | 1568 | } else { |
phh@1499 | 1569 | // Not-small physical memory, so require a heap at least |
phh@1499 | 1570 | // as large as MaxHeapSize |
phh@1499 | 1571 | reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); |
ysr@777 | 1572 | } |
phh@1499 | 1573 | if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { |
phh@1499 | 1574 | // Limit the heap size to ErgoHeapSizeLimit |
phh@1499 | 1575 | reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); |
phh@1499 | 1576 | } |
phh@1499 | 1577 | if (UseCompressedOops) { |
phh@1499 | 1578 | // Limit the heap size to the maximum possible when using compressed oops |
kvn@2305 | 1579 | julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
kvn@2305 | 1580 | if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { |
kvn@2305 | 1581 | // Heap should be above HeapBaseMinAddress to get zero based compressed oops |
kvn@2305 | 1582 | // but it should be not less than default MaxHeapSize. |
kvn@2305 | 1583 | max_coop_heap -= HeapBaseMinAddress; |
kvn@2305 | 1584 | } |
kvn@2305 | 1585 | reasonable_max = MIN2(reasonable_max, max_coop_heap); |
phh@1499 | 1586 | } |
phh@1499 | 1587 | reasonable_max = os::allocatable_physical_memory(reasonable_max); |
phh@1499 | 1588 | |
phh@1499 | 1589 | if (!FLAG_IS_DEFAULT(InitialHeapSize)) { |
phh@1499 | 1590 | // An initial heap size was specified on the command line, |
phh@1499 | 1591 | // so be sure that the maximum size is consistent. Done |
phh@1499 | 1592 | // after call to allocatable_physical_memory because that |
phh@1499 | 1593 | // method might reduce the allocation size. |
phh@1499 | 1594 | reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); |
phh@1499 | 1595 | } |
phh@1499 | 1596 | |
ysr@777 | 1597 | if (PrintGCDetails && Verbose) { |
ysr@777 | 1598 | // Cannot use gclog_or_tty yet. |
phh@1499 | 1599 | tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
ysr@777 | 1600 | } |
phh@1499 | 1601 | FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
phh@1499 | 1602 | } |
phh@1499 | 1603 | |
phh@1499 | 1604 | // If the initial_heap_size has not been set with InitialHeapSize |
phh@1499 | 1605 | // or -Xms, then set it as fraction of the size of physical memory, |
phh@1499 | 1606 | // respecting the maximum and minimum sizes of the heap. |
phh@1499 | 1607 | if (FLAG_IS_DEFAULT(InitialHeapSize)) { |
phh@1509 | 1608 | julong reasonable_minimum = (julong)(OldSize + NewSize); |
phh@1509 | 1609 | |
phh@1509 | 1610 | reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
phh@1509 | 1611 | |
phh@1509 | 1612 | reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
phh@1509 | 1613 | |
phh@1499 | 1614 | julong reasonable_initial = phys_mem / InitialRAMFraction; |
phh@1499 | 1615 | |
phh@1509 | 1616 | reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
phh@1499 | 1617 | reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
phh@1499 | 1618 | |
phh@1499 | 1619 | reasonable_initial = os::allocatable_physical_memory(reasonable_initial); |
phh@1499 | 1620 | |
phh@1499 | 1621 | if (PrintGCDetails && Verbose) { |
phh@1499 | 1622 | // Cannot use gclog_or_tty yet. |
phh@1499 | 1623 | tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); |
phh@1509 | 1624 | tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
ysr@777 | 1625 | } |
phh@1499 | 1626 | FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
phh@1509 | 1627 | set_min_heap_size((uintx)reasonable_minimum); |
ysr@777 | 1628 | } |
ysr@777 | 1629 | } |
ysr@777 | 1630 | |
duke@435 | 1631 | // This must be called after ergonomics because we want bytecode rewriting |
duke@435 | 1632 | // if the server compiler is used, or if UseSharedSpaces is disabled. |
duke@435 | 1633 | void Arguments::set_bytecode_flags() { |
duke@435 | 1634 | // Better not attempt to store into a read-only space. |
duke@435 | 1635 | if (UseSharedSpaces) { |
duke@435 | 1636 | FLAG_SET_DEFAULT(RewriteBytecodes, false); |
duke@435 | 1637 | FLAG_SET_DEFAULT(RewriteFrequentPairs, false); |
duke@435 | 1638 | } |
duke@435 | 1639 | |
duke@435 | 1640 | if (!RewriteBytecodes) { |
duke@435 | 1641 | FLAG_SET_DEFAULT(RewriteFrequentPairs, false); |
duke@435 | 1642 | } |
duke@435 | 1643 | } |
duke@435 | 1644 | |
duke@435 | 1645 | // Aggressive optimization flags -XX:+AggressiveOpts |
duke@435 | 1646 | void Arguments::set_aggressive_opts_flags() { |
never@452 | 1647 | #ifdef COMPILER2 |
never@452 | 1648 | if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
never@452 | 1649 | if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
never@452 | 1650 | FLAG_SET_DEFAULT(EliminateAutoBox, true); |
never@452 | 1651 | } |
never@452 | 1652 | if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
never@452 | 1653 | FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
never@452 | 1654 | } |
never@452 | 1655 | |
never@452 | 1656 | // Feed the cache size setting into the JDK |
never@452 | 1657 | char buffer[1024]; |
xlu@948 | 1658 | sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
never@452 | 1659 | add_property(buffer); |
never@452 | 1660 | } |
never@851 | 1661 | if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
never@851 | 1662 | FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
never@851 | 1663 | } |
never@452 | 1664 | #endif |
never@452 | 1665 | |
duke@435 | 1666 | if (AggressiveOpts) { |
sbohne@496 | 1667 | // Sample flag setting code |
sbohne@496 | 1668 | // if (FLAG_IS_DEFAULT(EliminateZeroing)) { |
sbohne@496 | 1669 | // FLAG_SET_DEFAULT(EliminateZeroing, true); |
sbohne@496 | 1670 | // } |
duke@435 | 1671 | } |
duke@435 | 1672 | } |
duke@435 | 1673 | |
duke@435 | 1674 | //=========================================================================================================== |
duke@435 | 1675 | // Parsing of java.compiler property |
duke@435 | 1676 | |
duke@435 | 1677 | void Arguments::process_java_compiler_argument(char* arg) { |
duke@435 | 1678 | // For backwards compatibility, Djava.compiler=NONE or "" |
duke@435 | 1679 | // causes us to switch to -Xint mode UNLESS -Xdebug |
duke@435 | 1680 | // is also specified. |
duke@435 | 1681 | if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { |
duke@435 | 1682 | set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. |
duke@435 | 1683 | } |
duke@435 | 1684 | } |
duke@435 | 1685 | |
duke@435 | 1686 | void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { |
duke@435 | 1687 | _sun_java_launcher = strdup(launcher); |
sla@2584 | 1688 | if (strcmp("gamma", _sun_java_launcher) == 0) { |
sla@2584 | 1689 | _created_by_gamma_launcher = true; |
sla@2584 | 1690 | } |
duke@435 | 1691 | } |
duke@435 | 1692 | |
duke@435 | 1693 | bool Arguments::created_by_java_launcher() { |
duke@435 | 1694 | assert(_sun_java_launcher != NULL, "property must have value"); |
duke@435 | 1695 | return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; |
duke@435 | 1696 | } |
duke@435 | 1697 | |
sla@2584 | 1698 | bool Arguments::created_by_gamma_launcher() { |
sla@2584 | 1699 | return _created_by_gamma_launcher; |
sla@2584 | 1700 | } |
sla@2584 | 1701 | |
duke@435 | 1702 | //=========================================================================================================== |
duke@435 | 1703 | // Parsing of main arguments |
duke@435 | 1704 | |
johnc@1679 | 1705 | bool Arguments::verify_interval(uintx val, uintx min, |
johnc@1679 | 1706 | uintx max, const char* name) { |
johnc@1679 | 1707 | // Returns true iff value is in the inclusive interval [min..max] |
johnc@1679 | 1708 | // false, otherwise. |
johnc@1679 | 1709 | if (val >= min && val <= max) { |
johnc@1679 | 1710 | return true; |
johnc@1679 | 1711 | } |
johnc@1679 | 1712 | jio_fprintf(defaultStream::error_stream(), |
johnc@1679 | 1713 | "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
johnc@1679 | 1714 | " and " UINTX_FORMAT "\n", |
johnc@1679 | 1715 | name, val, min, max); |
johnc@1679 | 1716 | return false; |
johnc@1679 | 1717 | } |
johnc@1679 | 1718 | |
ptisnovs@2099 | 1719 | bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
jwilhelm@2648 | 1720 | // Returns true if given value is at least specified min threshold |
ptisnovs@2099 | 1721 | // false, otherwise. |
ptisnovs@2099 | 1722 | if (val >= min ) { |
ptisnovs@2099 | 1723 | return true; |
ptisnovs@2099 | 1724 | } |
ptisnovs@2099 | 1725 | jio_fprintf(defaultStream::error_stream(), |
jwilhelm@2648 | 1726 | "%s of " INTX_FORMAT " is invalid; must be at least " INTX_FORMAT "\n", |
ptisnovs@2099 | 1727 | name, val, min); |
ptisnovs@2099 | 1728 | return false; |
ptisnovs@2099 | 1729 | } |
ptisnovs@2099 | 1730 | |
duke@435 | 1731 | bool Arguments::verify_percentage(uintx value, const char* name) { |
duke@435 | 1732 | if (value <= 100) { |
duke@435 | 1733 | return true; |
duke@435 | 1734 | } |
duke@435 | 1735 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1736 | "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", |
duke@435 | 1737 | name, value); |
duke@435 | 1738 | return false; |
duke@435 | 1739 | } |
duke@435 | 1740 | |
phh@1499 | 1741 | static void force_serial_gc() { |
duke@435 | 1742 | FLAG_SET_DEFAULT(UseSerialGC, true); |
duke@435 | 1743 | FLAG_SET_DEFAULT(UseParNewGC, false); |
duke@435 | 1744 | FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); |
ysr@1380 | 1745 | FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
duke@435 | 1746 | FLAG_SET_DEFAULT(UseParallelGC, false); |
duke@435 | 1747 | FLAG_SET_DEFAULT(UseParallelOldGC, false); |
ysr@777 | 1748 | FLAG_SET_DEFAULT(UseG1GC, false); |
duke@435 | 1749 | } |
duke@435 | 1750 | |
duke@435 | 1751 | static bool verify_serial_gc_flags() { |
duke@435 | 1752 | return (UseSerialGC && |
ysr@1380 | 1753 | !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
ysr@777 | 1754 | UseParallelGC || UseParallelOldGC)); |
duke@435 | 1755 | } |
duke@435 | 1756 | |
minqi@2964 | 1757 | // check if do gclog rotation |
minqi@2964 | 1758 | // +UseGCLogFileRotation is a must, |
minqi@2964 | 1759 | // no gc log rotation when log file not supplied or |
minqi@2964 | 1760 | // NumberOfGCLogFiles is 0, or GCLogFileSize is 0 |
minqi@2964 | 1761 | void check_gclog_consistency() { |
minqi@2964 | 1762 | if (UseGCLogFileRotation) { |
minqi@2964 | 1763 | if ((Arguments::gc_log_filename() == NULL) || |
minqi@2964 | 1764 | (NumberOfGCLogFiles == 0) || |
minqi@2964 | 1765 | (GCLogFileSize == 0)) { |
minqi@2964 | 1766 | jio_fprintf(defaultStream::output_stream(), |
ysr@2966 | 1767 | "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>\n" |
minqi@2964 | 1768 | "where num_of_file > 0 and num_of_size > 0\n" |
minqi@2964 | 1769 | "GC log rotation is turned off\n"); |
minqi@2964 | 1770 | UseGCLogFileRotation = false; |
minqi@2964 | 1771 | } |
minqi@2964 | 1772 | } |
minqi@2964 | 1773 | |
minqi@2964 | 1774 | if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
minqi@2964 | 1775 | FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K); |
minqi@2964 | 1776 | jio_fprintf(defaultStream::output_stream(), |
minqi@2964 | 1777 | "GCLogFileSize changed to minimum 8K\n"); |
minqi@2964 | 1778 | } |
minqi@2964 | 1779 | } |
minqi@2964 | 1780 | |
jmasa@445 | 1781 | // Check consistency of GC selection |
jmasa@445 | 1782 | bool Arguments::check_gc_consistency() { |
minqi@2964 | 1783 | check_gclog_consistency(); |
jmasa@445 | 1784 | bool status = true; |
jmasa@445 | 1785 | // Ensure that the user has not selected conflicting sets |
jmasa@445 | 1786 | // of collectors. [Note: this check is merely a user convenience; |
jmasa@445 | 1787 | // collectors over-ride each other so that only a non-conflicting |
jmasa@445 | 1788 | // set is selected; however what the user gets is not what they |
jmasa@445 | 1789 | // may have expected from the combination they asked for. It's |
jmasa@445 | 1790 | // better to reduce user confusion by not allowing them to |
jmasa@445 | 1791 | // select conflicting combinations. |
jmasa@445 | 1792 | uint i = 0; |
jmasa@445 | 1793 | if (UseSerialGC) i++; |
jmasa@445 | 1794 | if (UseConcMarkSweepGC || UseParNewGC) i++; |
jmasa@445 | 1795 | if (UseParallelGC || UseParallelOldGC) i++; |
ysr@1280 | 1796 | if (UseG1GC) i++; |
jmasa@445 | 1797 | if (i > 1) { |
jmasa@445 | 1798 | jio_fprintf(defaultStream::error_stream(), |
jmasa@445 | 1799 | "Conflicting collector combinations in option list; " |
jmasa@445 | 1800 | "please refer to the release notes for the combinations " |
jmasa@445 | 1801 | "allowed\n"); |
jmasa@445 | 1802 | status = false; |
jmasa@445 | 1803 | } |
jmasa@445 | 1804 | |
jmasa@445 | 1805 | return status; |
jmasa@445 | 1806 | } |
jmasa@445 | 1807 | |
brutisso@4388 | 1808 | void Arguments::check_deprecated_gcs() { |
brutisso@4388 | 1809 | if (UseConcMarkSweepGC && !UseParNewGC) { |
brutisso@4388 | 1810 | warning("Using the DefNew young collector with the CMS collector is deprecated " |
brutisso@4388 | 1811 | "and will likely be removed in a future release"); |
brutisso@4388 | 1812 | } |
brutisso@4388 | 1813 | |
brutisso@4388 | 1814 | if (UseParNewGC && !UseConcMarkSweepGC) { |
brutisso@4388 | 1815 | // !UseConcMarkSweepGC means that we are using serial old gc. Unfortunately we don't |
brutisso@4388 | 1816 | // set up UseSerialGC properly, so that can't be used in the check here. |
brutisso@4388 | 1817 | warning("Using the ParNew young collector with the Serial old collector is deprecated " |
brutisso@4388 | 1818 | "and will likely be removed in a future release"); |
brutisso@4388 | 1819 | } |
brutisso@4389 | 1820 | |
brutisso@4389 | 1821 | if (CMSIncrementalMode) { |
brutisso@4389 | 1822 | warning("Using incremental CMS is deprecated and will likely be removed in a future release"); |
brutisso@4389 | 1823 | } |
brutisso@4388 | 1824 | } |
brutisso@4388 | 1825 | |
ptisnovs@2099 | 1826 | // Check stack pages settings |
ptisnovs@2099 | 1827 | bool Arguments::check_stack_pages() |
ptisnovs@2099 | 1828 | { |
ptisnovs@2099 | 1829 | bool status = true; |
ptisnovs@2099 | 1830 | status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
ptisnovs@2099 | 1831 | status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
coleenp@2222 | 1832 | // greater stack shadow pages can't generate instruction to bang stack |
coleenp@2222 | 1833 | status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
ptisnovs@2099 | 1834 | return status; |
ptisnovs@2099 | 1835 | } |
ptisnovs@2099 | 1836 | |
duke@435 | 1837 | // Check the consistency of vm_init_args |
duke@435 | 1838 | bool Arguments::check_vm_args_consistency() { |
duke@435 | 1839 | // Method for adding checks for flag consistency. |
duke@435 | 1840 | // The intent is to warn the user of all possible conflicts, |
duke@435 | 1841 | // before returning an error. |
duke@435 | 1842 | // Note: Needs platform-dependent factoring. |
duke@435 | 1843 | bool status = true; |
duke@435 | 1844 | |
duke@435 | 1845 | #if ( (defined(COMPILER2) && defined(SPARC))) |
duke@435 | 1846 | // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init |
duke@435 | 1847 | // on sparc doesn't require generation of a stub as is the case on, e.g., |
duke@435 | 1848 | // x86. Normally, VM_Version_init must be called from init_globals in |
duke@435 | 1849 | // init.cpp, which is called by the initial java thread *after* arguments |
duke@435 | 1850 | // have been parsed. VM_Version_init gets called twice on sparc. |
duke@435 | 1851 | extern void VM_Version_init(); |
duke@435 | 1852 | VM_Version_init(); |
duke@435 | 1853 | if (!VM_Version::has_v9()) { |
duke@435 | 1854 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1855 | "V8 Machine detected, Server requires V9\n"); |
duke@435 | 1856 | status = false; |
duke@435 | 1857 | } |
duke@435 | 1858 | #endif /* COMPILER2 && SPARC */ |
duke@435 | 1859 | |
duke@435 | 1860 | // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product |
duke@435 | 1861 | // builds so the cost of stack banging can be measured. |
duke@435 | 1862 | #if (defined(PRODUCT) && defined(SOLARIS)) |
duke@435 | 1863 | if (!UseBoundThreads && !UseStackBanging) { |
duke@435 | 1864 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1865 | "-UseStackBanging conflicts with -UseBoundThreads\n"); |
duke@435 | 1866 | |
duke@435 | 1867 | status = false; |
duke@435 | 1868 | } |
duke@435 | 1869 | #endif |
duke@435 | 1870 | |
duke@435 | 1871 | if (TLABRefillWasteFraction == 0) { |
duke@435 | 1872 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1873 | "TLABRefillWasteFraction should be a denominator, " |
duke@435 | 1874 | "not " SIZE_FORMAT "\n", |
duke@435 | 1875 | TLABRefillWasteFraction); |
duke@435 | 1876 | status = false; |
duke@435 | 1877 | } |
duke@435 | 1878 | |
jmasa@445 | 1879 | status = status && verify_percentage(AdaptiveSizePolicyWeight, |
duke@435 | 1880 | "AdaptiveSizePolicyWeight"); |
jmasa@445 | 1881 | status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
jmasa@445 | 1882 | status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
jmasa@445 | 1883 | status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
duke@435 | 1884 | |
hseigel@4277 | 1885 | // Divide by bucket size to prevent a large size from causing rollover when |
hseigel@4277 | 1886 | // calculating amount of memory needed to be allocated for the String table. |
hseigel@4277 | 1887 | status = status && verify_interval(StringTableSize, defaultStringTableSize, |
hseigel@4277 | 1888 | (max_uintx / StringTable::bucket_size()), "StringTable size"); |
hseigel@4277 | 1889 | |
duke@435 | 1890 | if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
duke@435 | 1891 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1892 | "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " |
duke@435 | 1893 | "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", |
duke@435 | 1894 | MinHeapFreeRatio, MaxHeapFreeRatio); |
duke@435 | 1895 | status = false; |
duke@435 | 1896 | } |
duke@435 | 1897 | // Keeping the heap 100% free is hard ;-) so limit it to 99%. |
duke@435 | 1898 | MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); |
duke@435 | 1899 | |
jmasa@4581 | 1900 | // Min/MaxMetaspaceFreeRatio |
jmasa@4581 | 1901 | status = status && verify_percentage(MinMetaspaceFreeRatio, "MinMetaspaceFreeRatio"); |
jmasa@4581 | 1902 | status = status && verify_percentage(MaxMetaspaceFreeRatio, "MaxMetaspaceFreeRatio"); |
jmasa@4581 | 1903 | |
jmasa@4581 | 1904 | if (MinMetaspaceFreeRatio > MaxMetaspaceFreeRatio) { |
jmasa@4581 | 1905 | jio_fprintf(defaultStream::error_stream(), |
jmasa@4581 | 1906 | "MinMetaspaceFreeRatio (%s" UINTX_FORMAT ") must be less than or " |
jmasa@4581 | 1907 | "equal to MaxMetaspaceFreeRatio (%s" UINTX_FORMAT ")\n", |
jmasa@4581 | 1908 | FLAG_IS_DEFAULT(MinMetaspaceFreeRatio) ? "Default: " : "", |
jmasa@4581 | 1909 | MinMetaspaceFreeRatio, |
jmasa@4581 | 1910 | FLAG_IS_DEFAULT(MaxMetaspaceFreeRatio) ? "Default: " : "", |
jmasa@4581 | 1911 | MaxMetaspaceFreeRatio); |
jmasa@4581 | 1912 | status = false; |
jmasa@4581 | 1913 | } |
jmasa@4581 | 1914 | |
jmasa@4581 | 1915 | // Trying to keep 100% free is not practical |
jmasa@4581 | 1916 | MinMetaspaceFreeRatio = MIN2(MinMetaspaceFreeRatio, (uintx) 99); |
jmasa@4581 | 1917 | |
duke@435 | 1918 | if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { |
duke@435 | 1919 | MarkSweepAlwaysCompactCount = 1; // Move objects every gc. |
duke@435 | 1920 | } |
duke@435 | 1921 | |
jcoomes@918 | 1922 | if (UseParallelOldGC && ParallelOldGCSplitALot) { |
jcoomes@918 | 1923 | // Settings to encourage splitting. |
jcoomes@918 | 1924 | if (!FLAG_IS_CMDLINE(NewRatio)) { |
jwilhelm@4576 | 1925 | FLAG_SET_CMDLINE(uintx, NewRatio, 2); |
jcoomes@918 | 1926 | } |
jcoomes@918 | 1927 | if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
jcoomes@918 | 1928 | FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
jcoomes@918 | 1929 | } |
jcoomes@918 | 1930 | } |
jcoomes@918 | 1931 | |
jmasa@445 | 1932 | status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
jmasa@445 | 1933 | status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
duke@435 | 1934 | if (GCTimeLimit == 100) { |
duke@435 | 1935 | // Turn off gc-overhead-limit-exceeded checks |
duke@435 | 1936 | FLAG_SET_DEFAULT(UseGCOverheadLimit, false); |
duke@435 | 1937 | } |
duke@435 | 1938 | |
jmasa@445 | 1939 | status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
duke@435 | 1940 | |
jmasa@445 | 1941 | status = status && check_gc_consistency(); |
ptisnovs@2099 | 1942 | status = status && check_stack_pages(); |
duke@435 | 1943 | |
duke@435 | 1944 | if (_has_alloc_profile) { |
duke@435 | 1945 | if (UseParallelGC || UseParallelOldGC) { |
duke@435 | 1946 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1947 | "error: invalid argument combination.\n" |
duke@435 | 1948 | "Allocation profiling (-Xaprof) cannot be used together with " |
duke@435 | 1949 | "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); |
duke@435 | 1950 | status = false; |
duke@435 | 1951 | } |
duke@435 | 1952 | if (UseConcMarkSweepGC) { |
duke@435 | 1953 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1954 | "error: invalid argument combination.\n" |
duke@435 | 1955 | "Allocation profiling (-Xaprof) cannot be used together with " |
duke@435 | 1956 | "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); |
duke@435 | 1957 | status = false; |
duke@435 | 1958 | } |
duke@435 | 1959 | } |
duke@435 | 1960 | |
duke@435 | 1961 | if (CMSIncrementalMode) { |
duke@435 | 1962 | if (!UseConcMarkSweepGC) { |
duke@435 | 1963 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1964 | "error: invalid argument combination.\n" |
duke@435 | 1965 | "The CMS collector (-XX:+UseConcMarkSweepGC) must be " |
duke@435 | 1966 | "selected in order\nto use CMSIncrementalMode.\n"); |
duke@435 | 1967 | status = false; |
duke@435 | 1968 | } else { |
jmasa@445 | 1969 | status = status && verify_percentage(CMSIncrementalDutyCycle, |
duke@435 | 1970 | "CMSIncrementalDutyCycle"); |
jmasa@445 | 1971 | status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
duke@435 | 1972 | "CMSIncrementalDutyCycleMin"); |
jmasa@445 | 1973 | status = status && verify_percentage(CMSIncrementalSafetyFactor, |
duke@435 | 1974 | "CMSIncrementalSafetyFactor"); |
jmasa@445 | 1975 | status = status && verify_percentage(CMSIncrementalOffset, |
duke@435 | 1976 | "CMSIncrementalOffset"); |
jmasa@445 | 1977 | status = status && verify_percentage(CMSExpAvgFactor, |
duke@435 | 1978 | "CMSExpAvgFactor"); |
duke@435 | 1979 | // If it was not set on the command line, set |
duke@435 | 1980 | // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. |
duke@435 | 1981 | if (CMSInitiatingOccupancyFraction < 0) { |
duke@435 | 1982 | FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); |
duke@435 | 1983 | } |
duke@435 | 1984 | } |
duke@435 | 1985 | } |
duke@435 | 1986 | |
duke@435 | 1987 | // CMS space iteration, which FLSVerifyAllHeapreferences entails, |
duke@435 | 1988 | // insists that we hold the requisite locks so that the iteration is |
duke@435 | 1989 | // MT-safe. For the verification at start-up and shut-down, we don't |
duke@435 | 1990 | // yet have a good way of acquiring and releasing these locks, |
duke@435 | 1991 | // which are not visible at the CollectedHeap level. We want to |
duke@435 | 1992 | // be able to acquire these locks and then do the iteration rather |
duke@435 | 1993 | // than just disable the lock verification. This will be fixed under |
duke@435 | 1994 | // bug 4788986. |
duke@435 | 1995 | if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { |
duke@435 | 1996 | if (VerifyGCStartAt == 0) { |
duke@435 | 1997 | warning("Heap verification at start-up disabled " |
duke@435 | 1998 | "(due to current incompatibility with FLSVerifyAllHeapReferences)"); |
duke@435 | 1999 | VerifyGCStartAt = 1; // Disable verification at start-up |
duke@435 | 2000 | } |
duke@435 | 2001 | if (VerifyBeforeExit) { |
duke@435 | 2002 | warning("Heap verification at shutdown disabled " |
duke@435 | 2003 | "(due to current incompatibility with FLSVerifyAllHeapReferences)"); |
duke@435 | 2004 | VerifyBeforeExit = false; // Disable verification at shutdown |
duke@435 | 2005 | } |
duke@435 | 2006 | } |
duke@435 | 2007 | |
duke@435 | 2008 | // Note: only executed in non-PRODUCT mode |
duke@435 | 2009 | if (!UseAsyncConcMarkSweepGC && |
duke@435 | 2010 | (ExplicitGCInvokesConcurrent || |
duke@435 | 2011 | ExplicitGCInvokesConcurrentAndUnloadsClasses)) { |
duke@435 | 2012 | jio_fprintf(defaultStream::error_stream(), |
brutisso@4015 | 2013 | "error: +ExplicitGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
duke@435 | 2014 | " with -UseAsyncConcMarkSweepGC"); |
duke@435 | 2015 | status = false; |
duke@435 | 2016 | } |
duke@435 | 2017 | |
jwilhelm@2648 | 2018 | status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
jwilhelm@2648 | 2019 | |
jprovino@4542 | 2020 | #if INCLUDE_ALL_GCS |
tonyp@1718 | 2021 | if (UseG1GC) { |
tonyp@1718 | 2022 | status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
tonyp@1718 | 2023 | "InitiatingHeapOccupancyPercent"); |
johnc@2494 | 2024 | status = status && verify_min_value(G1RefProcDrainInterval, 1, |
johnc@2494 | 2025 | "G1RefProcDrainInterval"); |
johnc@2494 | 2026 | status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
johnc@2494 | 2027 | "G1ConcMarkStepDurationMillis"); |
tonyp@1718 | 2028 | } |
jprovino@4542 | 2029 | #endif // INCLUDE_ALL_GCS |
tonyp@1718 | 2030 | |
johnc@1679 | 2031 | status = status && verify_interval(RefDiscoveryPolicy, |
johnc@1679 | 2032 | ReferenceProcessor::DiscoveryPolicyMin, |
johnc@1679 | 2033 | ReferenceProcessor::DiscoveryPolicyMax, |
johnc@1679 | 2034 | "RefDiscoveryPolicy"); |
johnc@1679 | 2035 | |
johnc@1679 | 2036 | // Limit the lower bound of this flag to 1 as it is used in a division |
johnc@1679 | 2037 | // expression. |
johnc@1679 | 2038 | status = status && verify_interval(TLABWasteTargetPercent, |
johnc@1679 | 2039 | 1, 100, "TLABWasteTargetPercent"); |
johnc@1679 | 2040 | |
kvn@1926 | 2041 | status = status && verify_object_alignment(); |
kvn@1926 | 2042 | |
coleenp@4048 | 2043 | status = status && verify_min_value(ClassMetaspaceSize, 1*M, |
coleenp@4048 | 2044 | "ClassMetaspaceSize"); |
coleenp@4048 | 2045 | |
johnc@4333 | 2046 | status = status && verify_interval(MarkStackSizeMax, |
johnc@4333 | 2047 | 1, (max_jint - 1), "MarkStackSizeMax"); |
johnc@4333 | 2048 | |
johnc@4066 | 2049 | #ifdef SPARC |
johnc@4066 | 2050 | if (UseConcMarkSweepGC || UseG1GC) { |
johnc@4066 | 2051 | // Issue a stern warning if the user has explicitly set |
johnc@4066 | 2052 | // UseMemSetInBOT (it is known to cause issues), but allow |
johnc@4066 | 2053 | // use for experimentation and debugging. |
johnc@4066 | 2054 | if (VM_Version::is_sun4v() && UseMemSetInBOT) { |
johnc@4066 | 2055 | assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error"); |
johnc@4066 | 2056 | warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability" |
johnc@4066 | 2057 | " on sun4v; please understand that you are using at your own risk!"); |
johnc@4066 | 2058 | } |
johnc@4066 | 2059 | } |
johnc@4066 | 2060 | #endif // SPARC |
johnc@4066 | 2061 | |
jprovino@4165 | 2062 | if (PrintNMTStatistics) { |
jprovino@4165 | 2063 | #if INCLUDE_NMT |
jprovino@4165 | 2064 | if (MemTracker::tracking_level() == MemTracker::NMT_off) { |
jprovino@4165 | 2065 | #endif // INCLUDE_NMT |
jprovino@4165 | 2066 | warning("PrintNMTStatistics is disabled, because native memory tracking is not enabled"); |
jprovino@4165 | 2067 | PrintNMTStatistics = false; |
jprovino@4165 | 2068 | #if INCLUDE_NMT |
jprovino@4165 | 2069 | } |
jprovino@4165 | 2070 | #endif |
zgu@4081 | 2071 | } |
zgu@4081 | 2072 | |
duke@435 | 2073 | return status; |
duke@435 | 2074 | } |
duke@435 | 2075 | |
duke@435 | 2076 | bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, |
duke@435 | 2077 | const char* option_type) { |
duke@435 | 2078 | if (ignore) return false; |
duke@435 | 2079 | |
duke@435 | 2080 | const char* spacer = " "; |
duke@435 | 2081 | if (option_type == NULL) { |
duke@435 | 2082 | option_type = ++spacer; // Set both to the empty string. |
duke@435 | 2083 | } |
duke@435 | 2084 | |
duke@435 | 2085 | if (os::obsolete_option(option)) { |
duke@435 | 2086 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2087 | "Obsolete %s%soption: %s\n", option_type, spacer, |
duke@435 | 2088 | option->optionString); |
duke@435 | 2089 | return false; |
duke@435 | 2090 | } else { |
duke@435 | 2091 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2092 | "Unrecognized %s%soption: %s\n", option_type, spacer, |
duke@435 | 2093 | option->optionString); |
duke@435 | 2094 | return true; |
duke@435 | 2095 | } |
duke@435 | 2096 | } |
duke@435 | 2097 | |
duke@435 | 2098 | static const char* user_assertion_options[] = { |
duke@435 | 2099 | "-da", "-ea", "-disableassertions", "-enableassertions", 0 |
duke@435 | 2100 | }; |
duke@435 | 2101 | |
duke@435 | 2102 | static const char* system_assertion_options[] = { |
duke@435 | 2103 | "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 |
duke@435 | 2104 | }; |
duke@435 | 2105 | |
duke@435 | 2106 | // Return true if any of the strings in null-terminated array 'names' matches. |
duke@435 | 2107 | // If tail_allowed is true, then the tail must begin with a colon; otherwise, |
duke@435 | 2108 | // the option must match exactly. |
duke@435 | 2109 | static bool match_option(const JavaVMOption* option, const char** names, const char** tail, |
duke@435 | 2110 | bool tail_allowed) { |
duke@435 | 2111 | for (/* empty */; *names != NULL; ++names) { |
duke@435 | 2112 | if (match_option(option, *names, tail)) { |
duke@435 | 2113 | if (**tail == '\0' || tail_allowed && **tail == ':') { |
duke@435 | 2114 | return true; |
duke@435 | 2115 | } |
duke@435 | 2116 | } |
duke@435 | 2117 | } |
duke@435 | 2118 | return false; |
duke@435 | 2119 | } |
duke@435 | 2120 | |
jmasa@1719 | 2121 | bool Arguments::parse_uintx(const char* value, |
jmasa@1719 | 2122 | uintx* uintx_arg, |
jmasa@1719 | 2123 | uintx min_size) { |
jmasa@1719 | 2124 | |
jmasa@1719 | 2125 | // Check the sign first since atomull() parses only unsigned values. |
jmasa@1719 | 2126 | bool value_is_positive = !(*value == '-'); |
jmasa@1719 | 2127 | |
jmasa@1719 | 2128 | if (value_is_positive) { |
jmasa@1719 | 2129 | julong n; |
jmasa@1719 | 2130 | bool good_return = atomull(value, &n); |
jmasa@1719 | 2131 | if (good_return) { |
jmasa@1719 | 2132 | bool above_minimum = n >= min_size; |
jmasa@1719 | 2133 | bool value_is_too_large = n > max_uintx; |
jmasa@1719 | 2134 | |
jmasa@1719 | 2135 | if (above_minimum && !value_is_too_large) { |
jmasa@1719 | 2136 | *uintx_arg = n; |
jmasa@1719 | 2137 | return true; |
jmasa@1719 | 2138 | } |
jmasa@1719 | 2139 | } |
jmasa@1719 | 2140 | } |
jmasa@1719 | 2141 | return false; |
jmasa@1719 | 2142 | } |
jmasa@1719 | 2143 | |
duke@435 | 2144 | Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
swamyv@924 | 2145 | julong* long_arg, |
swamyv@924 | 2146 | julong min_size) { |
swamyv@924 | 2147 | if (!atomull(s, long_arg)) return arg_unreadable; |
duke@435 | 2148 | return check_memory_size(*long_arg, min_size); |
duke@435 | 2149 | } |
duke@435 | 2150 | |
duke@435 | 2151 | // Parse JavaVMInitArgs structure |
duke@435 | 2152 | |
duke@435 | 2153 | jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { |
duke@435 | 2154 | // For components of the system classpath. |
duke@435 | 2155 | SysClassPath scp(Arguments::get_sysclasspath()); |
duke@435 | 2156 | bool scp_assembly_required = false; |
duke@435 | 2157 | |
duke@435 | 2158 | // Save default settings for some mode flags |
duke@435 | 2159 | Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; |
duke@435 | 2160 | Arguments::_UseOnStackReplacement = UseOnStackReplacement; |
duke@435 | 2161 | Arguments::_ClipInlining = ClipInlining; |
duke@435 | 2162 | Arguments::_BackgroundCompilation = BackgroundCompilation; |
duke@435 | 2163 | |
never@2873 | 2164 | // Setup flags for mixed which is the default |
never@2873 | 2165 | set_mode_flags(_mixed); |
never@2873 | 2166 | |
duke@435 | 2167 | // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
duke@435 | 2168 | jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); |
duke@435 | 2169 | if (result != JNI_OK) { |
duke@435 | 2170 | return result; |
duke@435 | 2171 | } |
duke@435 | 2172 | |
duke@435 | 2173 | // Parse JavaVMInitArgs structure passed in |
duke@435 | 2174 | result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); |
duke@435 | 2175 | if (result != JNI_OK) { |
duke@435 | 2176 | return result; |
duke@435 | 2177 | } |
duke@435 | 2178 | |
phh@966 | 2179 | if (AggressiveOpts) { |
phh@966 | 2180 | // Insert alt-rt.jar between user-specified bootclasspath |
phh@966 | 2181 | // prefix and the default bootclasspath. os::set_boot_path() |
phh@966 | 2182 | // uses meta_index_dir as the default bootclasspath directory. |
phh@966 | 2183 | const char* altclasses_jar = "alt-rt.jar"; |
phh@966 | 2184 | size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
phh@966 | 2185 | strlen(altclasses_jar); |
zgu@3900 | 2186 | char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len, mtInternal); |
phh@966 | 2187 | strcpy(altclasses_path, get_meta_index_dir()); |
phh@966 | 2188 | strcat(altclasses_path, altclasses_jar); |
phh@966 | 2189 | scp.add_suffix_to_prefix(altclasses_path); |
phh@966 | 2190 | scp_assembly_required = true; |
zgu@3900 | 2191 | FREE_C_HEAP_ARRAY(char, altclasses_path, mtInternal); |
phh@966 | 2192 | } |
phh@966 | 2193 | |
mgerdin@3619 | 2194 | if (WhiteBoxAPI) { |
mgerdin@3619 | 2195 | // Append wb.jar to bootclasspath if enabled |
mgerdin@3619 | 2196 | const char* wb_jar = "wb.jar"; |
mgerdin@3619 | 2197 | size_t wb_path_len = strlen(get_meta_index_dir()) + 1 + |
mgerdin@3619 | 2198 | strlen(wb_jar); |
zgu@3900 | 2199 | char* wb_path = NEW_C_HEAP_ARRAY(char, wb_path_len, mtInternal); |
mgerdin@3619 | 2200 | strcpy(wb_path, get_meta_index_dir()); |
mgerdin@3619 | 2201 | strcat(wb_path, wb_jar); |
mgerdin@3619 | 2202 | scp.add_suffix(wb_path); |
mgerdin@3619 | 2203 | scp_assembly_required = true; |
zgu@3900 | 2204 | FREE_C_HEAP_ARRAY(char, wb_path, mtInternal); |
mgerdin@3619 | 2205 | } |
mgerdin@3619 | 2206 | |
duke@435 | 2207 | // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
duke@435 | 2208 | result = parse_java_options_environment_variable(&scp, &scp_assembly_required); |
duke@435 | 2209 | if (result != JNI_OK) { |
duke@435 | 2210 | return result; |
duke@435 | 2211 | } |
duke@435 | 2212 | |
duke@435 | 2213 | // Do final processing now that all arguments have been parsed |
duke@435 | 2214 | result = finalize_vm_init_args(&scp, scp_assembly_required); |
duke@435 | 2215 | if (result != JNI_OK) { |
duke@435 | 2216 | return result; |
duke@435 | 2217 | } |
duke@435 | 2218 | |
duke@435 | 2219 | return JNI_OK; |
duke@435 | 2220 | } |
duke@435 | 2221 | |
duke@435 | 2222 | jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, |
duke@435 | 2223 | SysClassPath* scp_p, |
duke@435 | 2224 | bool* scp_assembly_required_p, |
duke@435 | 2225 | FlagValueOrigin origin) { |
duke@435 | 2226 | // Remaining part of option string |
duke@435 | 2227 | const char* tail; |
duke@435 | 2228 | |
duke@435 | 2229 | // iterate over arguments |
duke@435 | 2230 | for (int index = 0; index < args->nOptions; index++) { |
duke@435 | 2231 | bool is_absolute_path = false; // for -agentpath vs -agentlib |
duke@435 | 2232 | |
duke@435 | 2233 | const JavaVMOption* option = args->options + index; |
duke@435 | 2234 | |
duke@435 | 2235 | if (!match_option(option, "-Djava.class.path", &tail) && |
duke@435 | 2236 | !match_option(option, "-Dsun.java.command", &tail) && |
duke@435 | 2237 | !match_option(option, "-Dsun.java.launcher", &tail)) { |
duke@435 | 2238 | |
duke@435 | 2239 | // add all jvm options to the jvm_args string. This string |
duke@435 | 2240 | // is used later to set the java.vm.args PerfData string constant. |
duke@435 | 2241 | // the -Djava.class.path and the -Dsun.java.command options are |
duke@435 | 2242 | // omitted from jvm_args string as each have their own PerfData |
duke@435 | 2243 | // string constant object. |
duke@435 | 2244 | build_jvm_args(option->optionString); |
duke@435 | 2245 | } |
duke@435 | 2246 | |
duke@435 | 2247 | // -verbose:[class/gc/jni] |
duke@435 | 2248 | if (match_option(option, "-verbose", &tail)) { |
duke@435 | 2249 | if (!strcmp(tail, ":class") || !strcmp(tail, "")) { |
duke@435 | 2250 | FLAG_SET_CMDLINE(bool, TraceClassLoading, true); |
duke@435 | 2251 | FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); |
duke@435 | 2252 | } else if (!strcmp(tail, ":gc")) { |
duke@435 | 2253 | FLAG_SET_CMDLINE(bool, PrintGC, true); |
duke@435 | 2254 | } else if (!strcmp(tail, ":jni")) { |
duke@435 | 2255 | FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); |
duke@435 | 2256 | } |
duke@435 | 2257 | // -da / -ea / -disableassertions / -enableassertions |
duke@435 | 2258 | // These accept an optional class/package name separated by a colon, e.g., |
duke@435 | 2259 | // -da:java.lang.Thread. |
duke@435 | 2260 | } else if (match_option(option, user_assertion_options, &tail, true)) { |
duke@435 | 2261 | bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' |
duke@435 | 2262 | if (*tail == '\0') { |
duke@435 | 2263 | JavaAssertions::setUserClassDefault(enable); |
duke@435 | 2264 | } else { |
duke@435 | 2265 | assert(*tail == ':', "bogus match by match_option()"); |
duke@435 | 2266 | JavaAssertions::addOption(tail + 1, enable); |
duke@435 | 2267 | } |
duke@435 | 2268 | // -dsa / -esa / -disablesystemassertions / -enablesystemassertions |
duke@435 | 2269 | } else if (match_option(option, system_assertion_options, &tail, false)) { |
duke@435 | 2270 | bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' |
duke@435 | 2271 | JavaAssertions::setSystemClassDefault(enable); |
duke@435 | 2272 | // -bootclasspath: |
duke@435 | 2273 | } else if (match_option(option, "-Xbootclasspath:", &tail)) { |
duke@435 | 2274 | scp_p->reset_path(tail); |
duke@435 | 2275 | *scp_assembly_required_p = true; |
duke@435 | 2276 | // -bootclasspath/a: |
duke@435 | 2277 | } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { |
duke@435 | 2278 | scp_p->add_suffix(tail); |
duke@435 | 2279 | *scp_assembly_required_p = true; |
duke@435 | 2280 | // -bootclasspath/p: |
duke@435 | 2281 | } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { |
duke@435 | 2282 | scp_p->add_prefix(tail); |
duke@435 | 2283 | *scp_assembly_required_p = true; |
duke@435 | 2284 | // -Xrun |
duke@435 | 2285 | } else if (match_option(option, "-Xrun", &tail)) { |
phh@966 | 2286 | if (tail != NULL) { |
duke@435 | 2287 | const char* pos = strchr(tail, ':'); |
duke@435 | 2288 | size_t len = (pos == NULL) ? strlen(tail) : pos - tail; |
zgu@3900 | 2289 | char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
duke@435 | 2290 | name[len] = '\0'; |
duke@435 | 2291 | |
duke@435 | 2292 | char *options = NULL; |
duke@435 | 2293 | if(pos != NULL) { |
duke@435 | 2294 | size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. |
zgu@3900 | 2295 | options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); |
duke@435 | 2296 | } |
jprovino@4165 | 2297 | #if !INCLUDE_JVMTI |
duke@435 | 2298 | if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
jprovino@4165 | 2299 | warning("profiling and debugging agents are not supported in this VM"); |
duke@435 | 2300 | } else |
jprovino@4165 | 2301 | #endif // !INCLUDE_JVMTI |
jprovino@4165 | 2302 | add_init_library(name, options); |
duke@435 | 2303 | } |
duke@435 | 2304 | // -agentlib and -agentpath |
duke@435 | 2305 | } else if (match_option(option, "-agentlib:", &tail) || |
duke@435 | 2306 | (is_absolute_path = match_option(option, "-agentpath:", &tail))) { |
duke@435 | 2307 | if(tail != NULL) { |
duke@435 | 2308 | const char* pos = strchr(tail, '='); |
duke@435 | 2309 | size_t len = (pos == NULL) ? strlen(tail) : pos - tail; |
zgu@3900 | 2310 | char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
duke@435 | 2311 | name[len] = '\0'; |
duke@435 | 2312 | |
duke@435 | 2313 | char *options = NULL; |
duke@435 | 2314 | if(pos != NULL) { |
zgu@3900 | 2315 | options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); |
duke@435 | 2316 | } |
jprovino@4165 | 2317 | #if !INCLUDE_JVMTI |
duke@435 | 2318 | if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
jprovino@4165 | 2319 | warning("profiling and debugging agents are not supported in this VM"); |
duke@435 | 2320 | } else |
jprovino@4165 | 2321 | #endif // !INCLUDE_JVMTI |
duke@435 | 2322 | add_init_agent(name, options, is_absolute_path); |
duke@435 | 2323 | |
duke@435 | 2324 | } |
duke@435 | 2325 | // -javaagent |
duke@435 | 2326 | } else if (match_option(option, "-javaagent:", &tail)) { |
jprovino@4165 | 2327 | #if !INCLUDE_JVMTI |
jprovino@4165 | 2328 | warning("Instrumentation agents are not supported in this VM"); |
jprovino@4165 | 2329 | #else |
duke@435 | 2330 | if(tail != NULL) { |
zgu@3900 | 2331 | char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); |
duke@435 | 2332 | add_init_agent("instrument", options, false); |
duke@435 | 2333 | } |
jprovino@4165 | 2334 | #endif // !INCLUDE_JVMTI |
duke@435 | 2335 | // -Xnoclassgc |
duke@435 | 2336 | } else if (match_option(option, "-Xnoclassgc", &tail)) { |
duke@435 | 2337 | FLAG_SET_CMDLINE(bool, ClassUnloading, false); |
duke@435 | 2338 | // -Xincgc: i-CMS |
duke@435 | 2339 | } else if (match_option(option, "-Xincgc", &tail)) { |
duke@435 | 2340 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); |
duke@435 | 2341 | FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); |
duke@435 | 2342 | // -Xnoincgc: no i-CMS |
duke@435 | 2343 | } else if (match_option(option, "-Xnoincgc", &tail)) { |
duke@435 | 2344 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); |
duke@435 | 2345 | FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); |
duke@435 | 2346 | // -Xconcgc |
duke@435 | 2347 | } else if (match_option(option, "-Xconcgc", &tail)) { |
duke@435 | 2348 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); |
duke@435 | 2349 | // -Xnoconcgc |
duke@435 | 2350 | } else if (match_option(option, "-Xnoconcgc", &tail)) { |
duke@435 | 2351 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); |
duke@435 | 2352 | // -Xbatch |
duke@435 | 2353 | } else if (match_option(option, "-Xbatch", &tail)) { |
duke@435 | 2354 | FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); |
duke@435 | 2355 | // -Xmn for compatibility with other JVM vendors |
duke@435 | 2356 | } else if (match_option(option, "-Xmn", &tail)) { |
swamyv@924 | 2357 | julong long_initial_eden_size = 0; |
duke@435 | 2358 | ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
duke@435 | 2359 | if (errcode != arg_in_range) { |
duke@435 | 2360 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2361 | "Invalid initial eden size: %s\n", option->optionString); |
duke@435 | 2362 | describe_range_error(errcode); |
duke@435 | 2363 | return JNI_EINVAL; |
duke@435 | 2364 | } |
phh@1499 | 2365 | FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
phh@1499 | 2366 | FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); |
duke@435 | 2367 | // -Xms |
duke@435 | 2368 | } else if (match_option(option, "-Xms", &tail)) { |
swamyv@924 | 2369 | julong long_initial_heap_size = 0; |
duke@435 | 2370 | ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
duke@435 | 2371 | if (errcode != arg_in_range) { |
duke@435 | 2372 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2373 | "Invalid initial heap size: %s\n", option->optionString); |
duke@435 | 2374 | describe_range_error(errcode); |
duke@435 | 2375 | return JNI_EINVAL; |
duke@435 | 2376 | } |
phh@1499 | 2377 | FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
duke@435 | 2378 | // Currently the minimum size and the initial heap sizes are the same. |
phh@1499 | 2379 | set_min_heap_size(InitialHeapSize); |
duke@435 | 2380 | // -Xmx |
duke@435 | 2381 | } else if (match_option(option, "-Xmx", &tail)) { |
swamyv@924 | 2382 | julong long_max_heap_size = 0; |
duke@435 | 2383 | ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
duke@435 | 2384 | if (errcode != arg_in_range) { |
duke@435 | 2385 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2386 | "Invalid maximum heap size: %s\n", option->optionString); |
duke@435 | 2387 | describe_range_error(errcode); |
duke@435 | 2388 | return JNI_EINVAL; |
duke@435 | 2389 | } |
phh@1499 | 2390 | FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
duke@435 | 2391 | // Xmaxf |
duke@435 | 2392 | } else if (match_option(option, "-Xmaxf", &tail)) { |
duke@435 | 2393 | int maxf = (int)(atof(tail) * 100); |
duke@435 | 2394 | if (maxf < 0 || maxf > 100) { |
duke@435 | 2395 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2396 | "Bad max heap free percentage size: %s\n", |
duke@435 | 2397 | option->optionString); |
duke@435 | 2398 | return JNI_EINVAL; |
duke@435 | 2399 | } else { |
duke@435 | 2400 | FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); |
duke@435 | 2401 | } |
duke@435 | 2402 | // Xminf |
duke@435 | 2403 | } else if (match_option(option, "-Xminf", &tail)) { |
duke@435 | 2404 | int minf = (int)(atof(tail) * 100); |
duke@435 | 2405 | if (minf < 0 || minf > 100) { |
duke@435 | 2406 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2407 | "Bad min heap free percentage size: %s\n", |
duke@435 | 2408 | option->optionString); |
duke@435 | 2409 | return JNI_EINVAL; |
duke@435 | 2410 | } else { |
duke@435 | 2411 | FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); |
duke@435 | 2412 | } |
duke@435 | 2413 | // -Xss |
duke@435 | 2414 | } else if (match_option(option, "-Xss", &tail)) { |
swamyv@924 | 2415 | julong long_ThreadStackSize = 0; |
duke@435 | 2416 | ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
duke@435 | 2417 | if (errcode != arg_in_range) { |
duke@435 | 2418 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2419 | "Invalid thread stack size: %s\n", option->optionString); |
duke@435 | 2420 | describe_range_error(errcode); |
duke@435 | 2421 | return JNI_EINVAL; |
duke@435 | 2422 | } |
duke@435 | 2423 | // Internally track ThreadStackSize in units of 1024 bytes. |
duke@435 | 2424 | FLAG_SET_CMDLINE(intx, ThreadStackSize, |
duke@435 | 2425 | round_to((int)long_ThreadStackSize, K) / K); |
duke@435 | 2426 | // -Xoss |
duke@435 | 2427 | } else if (match_option(option, "-Xoss", &tail)) { |
duke@435 | 2428 | // HotSpot does not have separate native and Java stacks, ignore silently for compatibility |
duke@435 | 2429 | // -Xmaxjitcodesize |
coleenp@2418 | 2430 | } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
coleenp@2418 | 2431 | match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
swamyv@924 | 2432 | julong long_ReservedCodeCacheSize = 0; |
duke@435 | 2433 | ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
swamyv@924 | 2434 | (size_t)InitialCodeCacheSize); |
duke@435 | 2435 | if (errcode != arg_in_range) { |
duke@435 | 2436 | jio_fprintf(defaultStream::error_stream(), |
coleenp@2418 | 2437 | "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
coleenp@2418 | 2438 | option->optionString, InitialCodeCacheSize/K); |
duke@435 | 2439 | describe_range_error(errcode); |
duke@435 | 2440 | return JNI_EINVAL; |
duke@435 | 2441 | } |
duke@435 | 2442 | FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); |
duke@435 | 2443 | // -green |
duke@435 | 2444 | } else if (match_option(option, "-green", &tail)) { |
duke@435 | 2445 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2446 | "Green threads support not available\n"); |
duke@435 | 2447 | return JNI_EINVAL; |
duke@435 | 2448 | // -native |
duke@435 | 2449 | } else if (match_option(option, "-native", &tail)) { |
duke@435 | 2450 | // HotSpot always uses native threads, ignore silently for compatibility |
duke@435 | 2451 | // -Xsqnopause |
duke@435 | 2452 | } else if (match_option(option, "-Xsqnopause", &tail)) { |
duke@435 | 2453 | // EVM option, ignore silently for compatibility |
duke@435 | 2454 | // -Xrs |
duke@435 | 2455 | } else if (match_option(option, "-Xrs", &tail)) { |
duke@435 | 2456 | // Classic/EVM option, new functionality |
duke@435 | 2457 | FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); |
duke@435 | 2458 | } else if (match_option(option, "-Xusealtsigs", &tail)) { |
duke@435 | 2459 | // change default internal VM signals used - lower case for back compat |
duke@435 | 2460 | FLAG_SET_CMDLINE(bool, UseAltSigs, true); |
duke@435 | 2461 | // -Xoptimize |
duke@435 | 2462 | } else if (match_option(option, "-Xoptimize", &tail)) { |
duke@435 | 2463 | // EVM option, ignore silently for compatibility |
duke@435 | 2464 | // -Xprof |
duke@435 | 2465 | } else if (match_option(option, "-Xprof", &tail)) { |
jprovino@4165 | 2466 | #if INCLUDE_FPROF |
duke@435 | 2467 | _has_profile = true; |
jprovino@4165 | 2468 | #else // INCLUDE_FPROF |
duke@435 | 2469 | // do we have to exit? |
jprovino@4165 | 2470 | warning("Flat profiling is not supported in this VM."); |
jprovino@4165 | 2471 | #endif // INCLUDE_FPROF |
duke@435 | 2472 | // -Xaprof |
duke@435 | 2473 | } else if (match_option(option, "-Xaprof", &tail)) { |
duke@435 | 2474 | _has_alloc_profile = true; |
duke@435 | 2475 | // -Xconcurrentio |
duke@435 | 2476 | } else if (match_option(option, "-Xconcurrentio", &tail)) { |
duke@435 | 2477 | FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); |
duke@435 | 2478 | FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); |
duke@435 | 2479 | FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); |
duke@435 | 2480 | FLAG_SET_CMDLINE(bool, UseTLAB, false); |
duke@435 | 2481 | FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation |
duke@435 | 2482 | |
duke@435 | 2483 | // -Xinternalversion |
duke@435 | 2484 | } else if (match_option(option, "-Xinternalversion", &tail)) { |
duke@435 | 2485 | jio_fprintf(defaultStream::output_stream(), "%s\n", |
duke@435 | 2486 | VM_Version::internal_vm_info_string()); |
duke@435 | 2487 | vm_exit(0); |
duke@435 | 2488 | #ifndef PRODUCT |
duke@435 | 2489 | // -Xprintflags |
duke@435 | 2490 | } else if (match_option(option, "-Xprintflags", &tail)) { |
fparain@3402 | 2491 | CommandLineFlags::printFlags(tty, false); |
duke@435 | 2492 | vm_exit(0); |
duke@435 | 2493 | #endif |
duke@435 | 2494 | // -D |
duke@435 | 2495 | } else if (match_option(option, "-D", &tail)) { |
duke@435 | 2496 | if (!add_property(tail)) { |
duke@435 | 2497 | return JNI_ENOMEM; |
duke@435 | 2498 | } |
duke@435 | 2499 | // Out of the box management support |
duke@435 | 2500 | if (match_option(option, "-Dcom.sun.management", &tail)) { |
duke@435 | 2501 | FLAG_SET_CMDLINE(bool, ManagementServer, true); |
duke@435 | 2502 | } |
duke@435 | 2503 | // -Xint |
duke@435 | 2504 | } else if (match_option(option, "-Xint", &tail)) { |
duke@435 | 2505 | set_mode_flags(_int); |
duke@435 | 2506 | // -Xmixed |
duke@435 | 2507 | } else if (match_option(option, "-Xmixed", &tail)) { |
duke@435 | 2508 | set_mode_flags(_mixed); |
duke@435 | 2509 | // -Xcomp |
duke@435 | 2510 | } else if (match_option(option, "-Xcomp", &tail)) { |
duke@435 | 2511 | // for testing the compiler; turn off all flags that inhibit compilation |
duke@435 | 2512 | set_mode_flags(_comp); |
duke@435 | 2513 | |
duke@435 | 2514 | // -Xshare:dump |
duke@435 | 2515 | } else if (match_option(option, "-Xshare:dump", &tail)) { |
zgu@4492 | 2516 | #if !INCLUDE_CDS |
jprovino@4165 | 2517 | vm_exit_during_initialization( |
jprovino@4165 | 2518 | "Dumping a shared archive is not supported in this VM.", NULL); |
duke@435 | 2519 | #else |
duke@435 | 2520 | FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); |
duke@435 | 2521 | set_mode_flags(_int); // Prevent compilation, which creates objects |
duke@435 | 2522 | #endif |
duke@435 | 2523 | // -Xshare:on |
duke@435 | 2524 | } else if (match_option(option, "-Xshare:on", &tail)) { |
duke@435 | 2525 | FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); |
duke@435 | 2526 | FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); |
duke@435 | 2527 | // -Xshare:auto |
duke@435 | 2528 | } else if (match_option(option, "-Xshare:auto", &tail)) { |
duke@435 | 2529 | FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); |
duke@435 | 2530 | FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); |
duke@435 | 2531 | // -Xshare:off |
duke@435 | 2532 | } else if (match_option(option, "-Xshare:off", &tail)) { |
duke@435 | 2533 | FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); |
duke@435 | 2534 | FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); |
duke@435 | 2535 | |
duke@435 | 2536 | // -Xverify |
duke@435 | 2537 | } else if (match_option(option, "-Xverify", &tail)) { |
duke@435 | 2538 | if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { |
duke@435 | 2539 | FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); |
duke@435 | 2540 | FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); |
duke@435 | 2541 | } else if (strcmp(tail, ":remote") == 0) { |
duke@435 | 2542 | FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); |
duke@435 | 2543 | FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); |
duke@435 | 2544 | } else if (strcmp(tail, ":none") == 0) { |
duke@435 | 2545 | FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); |
duke@435 | 2546 | FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); |
duke@435 | 2547 | } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { |
duke@435 | 2548 | return JNI_EINVAL; |
duke@435 | 2549 | } |
duke@435 | 2550 | // -Xdebug |
duke@435 | 2551 | } else if (match_option(option, "-Xdebug", &tail)) { |
duke@435 | 2552 | // note this flag has been used, then ignore |
duke@435 | 2553 | set_xdebug_mode(true); |
duke@435 | 2554 | // -Xnoagent |
duke@435 | 2555 | } else if (match_option(option, "-Xnoagent", &tail)) { |
duke@435 | 2556 | // For compatibility with classic. HotSpot refuses to load the old style agent.dll. |
duke@435 | 2557 | } else if (match_option(option, "-Xboundthreads", &tail)) { |
duke@435 | 2558 | // Bind user level threads to kernel threads (Solaris only) |
duke@435 | 2559 | FLAG_SET_CMDLINE(bool, UseBoundThreads, true); |
duke@435 | 2560 | } else if (match_option(option, "-Xloggc:", &tail)) { |
duke@435 | 2561 | // Redirect GC output to the file. -Xloggc:<filename> |
duke@435 | 2562 | // ostream_init_log(), when called will use this filename |
duke@435 | 2563 | // to initialize a fileStream. |
duke@435 | 2564 | _gc_log_filename = strdup(tail); |
duke@435 | 2565 | FLAG_SET_CMDLINE(bool, PrintGC, true); |
duke@435 | 2566 | FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); |
duke@435 | 2567 | |
duke@435 | 2568 | // JNI hooks |
duke@435 | 2569 | } else if (match_option(option, "-Xcheck", &tail)) { |
duke@435 | 2570 | if (!strcmp(tail, ":jni")) { |
jprovino@4165 | 2571 | #if !INCLUDE_JNI_CHECK |
jprovino@4165 | 2572 | warning("JNI CHECKING is not supported in this VM"); |
jprovino@4165 | 2573 | #else |
duke@435 | 2574 | CheckJNICalls = true; |
jprovino@4165 | 2575 | #endif // INCLUDE_JNI_CHECK |
duke@435 | 2576 | } else if (is_bad_option(option, args->ignoreUnrecognized, |
duke@435 | 2577 | "check")) { |
duke@435 | 2578 | return JNI_EINVAL; |
duke@435 | 2579 | } |
duke@435 | 2580 | } else if (match_option(option, "vfprintf", &tail)) { |
duke@435 | 2581 | _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); |
duke@435 | 2582 | } else if (match_option(option, "exit", &tail)) { |
duke@435 | 2583 | _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); |
duke@435 | 2584 | } else if (match_option(option, "abort", &tail)) { |
duke@435 | 2585 | _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); |
duke@435 | 2586 | // -XX:+AggressiveHeap |
duke@435 | 2587 | } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { |
duke@435 | 2588 | |
duke@435 | 2589 | // This option inspects the machine and attempts to set various |
duke@435 | 2590 | // parameters to be optimal for long-running, memory allocation |
duke@435 | 2591 | // intensive jobs. It is intended for machines with large |
duke@435 | 2592 | // amounts of cpu and memory. |
duke@435 | 2593 | |
duke@435 | 2594 | // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit |
duke@435 | 2595 | // VM, but we may not be able to represent the total physical memory |
duke@435 | 2596 | // available (like having 8gb of memory on a box but using a 32bit VM). |
duke@435 | 2597 | // Thus, we need to make sure we're using a julong for intermediate |
duke@435 | 2598 | // calculations. |
duke@435 | 2599 | julong initHeapSize; |
duke@435 | 2600 | julong total_memory = os::physical_memory(); |
duke@435 | 2601 | |
duke@435 | 2602 | if (total_memory < (julong)256*M) { |
duke@435 | 2603 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2604 | "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); |
duke@435 | 2605 | vm_exit(1); |
duke@435 | 2606 | } |
duke@435 | 2607 | |
duke@435 | 2608 | // The heap size is half of available memory, or (at most) |
duke@435 | 2609 | // all of possible memory less 160mb (leaving room for the OS |
duke@435 | 2610 | // when using ISM). This is the maximum; because adaptive sizing |
duke@435 | 2611 | // is turned on below, the actual space used may be smaller. |
duke@435 | 2612 | |
duke@435 | 2613 | initHeapSize = MIN2(total_memory / (julong)2, |
duke@435 | 2614 | total_memory - (julong)160*M); |
duke@435 | 2615 | |
duke@435 | 2616 | // Make sure that if we have a lot of memory we cap the 32 bit |
duke@435 | 2617 | // process space. The 64bit VM version of this function is a nop. |
duke@435 | 2618 | initHeapSize = os::allocatable_physical_memory(initHeapSize); |
duke@435 | 2619 | |
duke@435 | 2620 | if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
duke@435 | 2621 | FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); |
phh@1499 | 2622 | FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
duke@435 | 2623 | // Currently the minimum size and the initial heap sizes are the same. |
phh@1499 | 2624 | set_min_heap_size(initHeapSize); |
duke@435 | 2625 | } |
duke@435 | 2626 | if (FLAG_IS_DEFAULT(NewSize)) { |
duke@435 | 2627 | // Make the young generation 3/8ths of the total heap. |
duke@435 | 2628 | FLAG_SET_CMDLINE(uintx, NewSize, |
duke@435 | 2629 | ((julong)MaxHeapSize / (julong)8) * (julong)3); |
duke@435 | 2630 | FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); |
duke@435 | 2631 | } |
duke@435 | 2632 | |
coleenp@4228 | 2633 | #ifndef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
duke@435 | 2634 | FLAG_SET_DEFAULT(UseLargePages, true); |
coleenp@4228 | 2635 | #endif |
duke@435 | 2636 | |
duke@435 | 2637 | // Increase some data structure sizes for efficiency |
duke@435 | 2638 | FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); |
duke@435 | 2639 | FLAG_SET_CMDLINE(bool, ResizeTLAB, false); |
duke@435 | 2640 | FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); |
duke@435 | 2641 | |
duke@435 | 2642 | // See the OldPLABSize comment below, but replace 'after promotion' |
duke@435 | 2643 | // with 'after copying'. YoungPLABSize is the size of the survivor |
duke@435 | 2644 | // space per-gc-thread buffers. The default is 4kw. |
duke@435 | 2645 | FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words |
duke@435 | 2646 | |
duke@435 | 2647 | // OldPLABSize is the size of the buffers in the old gen that |
duke@435 | 2648 | // UseParallelGC uses to promote live data that doesn't fit in the |
duke@435 | 2649 | // survivor spaces. At any given time, there's one for each gc thread. |
duke@435 | 2650 | // The default size is 1kw. These buffers are rarely used, since the |
duke@435 | 2651 | // survivor spaces are usually big enough. For specjbb, however, there |
duke@435 | 2652 | // are occasions when there's lots of live data in the young gen |
duke@435 | 2653 | // and we end up promoting some of it. We don't have a definite |
duke@435 | 2654 | // explanation for why bumping OldPLABSize helps, but the theory |
duke@435 | 2655 | // is that a bigger PLAB results in retaining something like the |
duke@435 | 2656 | // original allocation order after promotion, which improves mutator |
duke@435 | 2657 | // locality. A minor effect may be that larger PLABs reduce the |
duke@435 | 2658 | // number of PLAB allocation events during gc. The value of 8kw |
duke@435 | 2659 | // was arrived at by experimenting with specjbb. |
duke@435 | 2660 | FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words |
duke@435 | 2661 | |
duke@435 | 2662 | // Enable parallel GC and adaptive generation sizing |
duke@435 | 2663 | FLAG_SET_CMDLINE(bool, UseParallelGC, true); |
jmasa@445 | 2664 | FLAG_SET_DEFAULT(ParallelGCThreads, |
jmasa@445 | 2665 | Abstract_VM_Version::parallel_worker_threads()); |
duke@435 | 2666 | |
duke@435 | 2667 | // Encourage steady state memory management |
duke@435 | 2668 | FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); |
duke@435 | 2669 | |
duke@435 | 2670 | // This appears to improve mutator locality |
duke@435 | 2671 | FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
duke@435 | 2672 | |
duke@435 | 2673 | // Get around early Solaris scheduling bug |
duke@435 | 2674 | // (affinity vs other jobs on system) |
duke@435 | 2675 | // but disallow DR and offlining (5008695). |
duke@435 | 2676 | FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); |
duke@435 | 2677 | |
duke@435 | 2678 | } else if (match_option(option, "-XX:+NeverTenure", &tail)) { |
duke@435 | 2679 | // The last option must always win. |
duke@435 | 2680 | FLAG_SET_CMDLINE(bool, AlwaysTenure, false); |
duke@435 | 2681 | FLAG_SET_CMDLINE(bool, NeverTenure, true); |
duke@435 | 2682 | } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { |
duke@435 | 2683 | // The last option must always win. |
duke@435 | 2684 | FLAG_SET_CMDLINE(bool, NeverTenure, false); |
duke@435 | 2685 | FLAG_SET_CMDLINE(bool, AlwaysTenure, true); |
duke@435 | 2686 | } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || |
duke@435 | 2687 | match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { |
duke@435 | 2688 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2689 | "Please use CMSClassUnloadingEnabled in place of " |
duke@435 | 2690 | "CMSPermGenSweepingEnabled in the future\n"); |
duke@435 | 2691 | } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { |
duke@435 | 2692 | FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); |
duke@435 | 2693 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2694 | "Please use -XX:+UseGCOverheadLimit in place of " |
duke@435 | 2695 | "-XX:+UseGCTimeLimit in the future\n"); |
duke@435 | 2696 | } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { |
duke@435 | 2697 | FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); |
duke@435 | 2698 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2699 | "Please use -XX:-UseGCOverheadLimit in place of " |
duke@435 | 2700 | "-XX:-UseGCTimeLimit in the future\n"); |
duke@435 | 2701 | // The TLE options are for compatibility with 1.3 and will be |
duke@435 | 2702 | // removed without notice in a future release. These options |
duke@435 | 2703 | // are not to be documented. |
duke@435 | 2704 | } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { |
duke@435 | 2705 | // No longer used. |
duke@435 | 2706 | } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { |
duke@435 | 2707 | FLAG_SET_CMDLINE(bool, ResizeTLAB, true); |
duke@435 | 2708 | } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { |
duke@435 | 2709 | FLAG_SET_CMDLINE(bool, ResizeTLAB, false); |
duke@435 | 2710 | } else if (match_option(option, "-XX:+PrintTLE", &tail)) { |
duke@435 | 2711 | FLAG_SET_CMDLINE(bool, PrintTLAB, true); |
duke@435 | 2712 | } else if (match_option(option, "-XX:-PrintTLE", &tail)) { |
duke@435 | 2713 | FLAG_SET_CMDLINE(bool, PrintTLAB, false); |
duke@435 | 2714 | } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { |
duke@435 | 2715 | // No longer used. |
duke@435 | 2716 | } else if (match_option(option, "-XX:TLESize=", &tail)) { |
swamyv@924 | 2717 | julong long_tlab_size = 0; |
duke@435 | 2718 | ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
duke@435 | 2719 | if (errcode != arg_in_range) { |
duke@435 | 2720 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2721 | "Invalid TLAB size: %s\n", option->optionString); |
duke@435 | 2722 | describe_range_error(errcode); |
duke@435 | 2723 | return JNI_EINVAL; |
duke@435 | 2724 | } |
duke@435 | 2725 | FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); |
duke@435 | 2726 | } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { |
duke@435 | 2727 | // No longer used. |
duke@435 | 2728 | } else if (match_option(option, "-XX:+UseTLE", &tail)) { |
duke@435 | 2729 | FLAG_SET_CMDLINE(bool, UseTLAB, true); |
duke@435 | 2730 | } else if (match_option(option, "-XX:-UseTLE", &tail)) { |
duke@435 | 2731 | FLAG_SET_CMDLINE(bool, UseTLAB, false); |
duke@435 | 2732 | SOLARIS_ONLY( |
duke@435 | 2733 | } else if (match_option(option, "-XX:+UsePermISM", &tail)) { |
duke@435 | 2734 | warning("-XX:+UsePermISM is obsolete."); |
duke@435 | 2735 | FLAG_SET_CMDLINE(bool, UseISM, true); |
duke@435 | 2736 | } else if (match_option(option, "-XX:-UsePermISM", &tail)) { |
duke@435 | 2737 | FLAG_SET_CMDLINE(bool, UseISM, false); |
duke@435 | 2738 | ) |
duke@435 | 2739 | } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { |
duke@435 | 2740 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); |
duke@435 | 2741 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); |
duke@435 | 2742 | } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { |
duke@435 | 2743 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); |
duke@435 | 2744 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); |
duke@435 | 2745 | } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { |
dcubed@3202 | 2746 | #if defined(DTRACE_ENABLED) |
duke@435 | 2747 | FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
duke@435 | 2748 | FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); |
duke@435 | 2749 | FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); |
duke@435 | 2750 | FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); |
dcubed@3202 | 2751 | #else // defined(DTRACE_ENABLED) |
duke@435 | 2752 | jio_fprintf(defaultStream::error_stream(), |
dcubed@3202 | 2753 | "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
duke@435 | 2754 | return JNI_EINVAL; |
dcubed@3202 | 2755 | #endif // defined(DTRACE_ENABLED) |
duke@435 | 2756 | #ifdef ASSERT |
ysr@1580 | 2757 | } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
duke@435 | 2758 | FLAG_SET_CMDLINE(bool, FullGCALot, true); |
duke@435 | 2759 | // disable scavenge before parallel mark-compact |
duke@435 | 2760 | FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
duke@435 | 2761 | #endif |
ysr@1580 | 2762 | } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
duke@435 | 2763 | julong cms_blocks_to_claim = (julong)atol(tail); |
duke@435 | 2764 | FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
duke@435 | 2765 | jio_fprintf(defaultStream::error_stream(), |
ysr@1580 | 2766 | "Please use -XX:OldPLABSize in place of " |
ysr@1580 | 2767 | "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
ysr@1580 | 2768 | } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
ysr@1580 | 2769 | julong cms_blocks_to_claim = (julong)atol(tail); |
ysr@1580 | 2770 | FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
ysr@1580 | 2771 | jio_fprintf(defaultStream::error_stream(), |
ysr@1580 | 2772 | "Please use -XX:OldPLABSize in place of " |
duke@435 | 2773 | "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
ysr@1580 | 2774 | } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
swamyv@924 | 2775 | julong old_plab_size = 0; |
duke@435 | 2776 | ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
duke@435 | 2777 | if (errcode != arg_in_range) { |
duke@435 | 2778 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2779 | "Invalid old PLAB size: %s\n", option->optionString); |
duke@435 | 2780 | describe_range_error(errcode); |
duke@435 | 2781 | return JNI_EINVAL; |
duke@435 | 2782 | } |
swamyv@924 | 2783 | FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
duke@435 | 2784 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2785 | "Please use -XX:OldPLABSize in place of " |
duke@435 | 2786 | "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); |
ysr@1580 | 2787 | } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
swamyv@924 | 2788 | julong young_plab_size = 0; |
duke@435 | 2789 | ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
duke@435 | 2790 | if (errcode != arg_in_range) { |
duke@435 | 2791 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2792 | "Invalid young PLAB size: %s\n", option->optionString); |
duke@435 | 2793 | describe_range_error(errcode); |
duke@435 | 2794 | return JNI_EINVAL; |
duke@435 | 2795 | } |
swamyv@924 | 2796 | FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
duke@435 | 2797 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2798 | "Please use -XX:YoungPLABSize in place of " |
duke@435 | 2799 | "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); |
jmasa@1719 | 2800 | } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
jmasa@1719 | 2801 | match_option(option, "-XX:G1MarkStackSize=", &tail)) { |
jmasa@1719 | 2802 | julong stack_size = 0; |
jmasa@1719 | 2803 | ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); |
jmasa@1719 | 2804 | if (errcode != arg_in_range) { |
jmasa@1719 | 2805 | jio_fprintf(defaultStream::error_stream(), |
jmasa@1719 | 2806 | "Invalid mark stack size: %s\n", option->optionString); |
jmasa@1719 | 2807 | describe_range_error(errcode); |
jmasa@1719 | 2808 | return JNI_EINVAL; |
jmasa@1719 | 2809 | } |
jmasa@1719 | 2810 | FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); |
jmasa@1719 | 2811 | } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { |
jmasa@1719 | 2812 | julong max_stack_size = 0; |
jmasa@1719 | 2813 | ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); |
jmasa@1719 | 2814 | if (errcode != arg_in_range) { |
jmasa@1719 | 2815 | jio_fprintf(defaultStream::error_stream(), |
jmasa@1719 | 2816 | "Invalid maximum mark stack size: %s\n", |
jmasa@1719 | 2817 | option->optionString); |
jmasa@1719 | 2818 | describe_range_error(errcode); |
jmasa@1719 | 2819 | return JNI_EINVAL; |
jmasa@1719 | 2820 | } |
jmasa@1719 | 2821 | FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); |
jmasa@1719 | 2822 | } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || |
jmasa@1719 | 2823 | match_option(option, "-XX:ParallelCMSThreads=", &tail)) { |
jmasa@1719 | 2824 | uintx conc_threads = 0; |
jmasa@1719 | 2825 | if (!parse_uintx(tail, &conc_threads, 1)) { |
jmasa@1719 | 2826 | jio_fprintf(defaultStream::error_stream(), |
jmasa@1719 | 2827 | "Invalid concurrent threads: %s\n", option->optionString); |
jmasa@1719 | 2828 | return JNI_EINVAL; |
jmasa@1719 | 2829 | } |
jmasa@1719 | 2830 | FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); |
dholmes@3902 | 2831 | } else if (match_option(option, "-XX:MaxDirectMemorySize=", &tail)) { |
dholmes@3902 | 2832 | julong max_direct_memory_size = 0; |
dholmes@3902 | 2833 | ArgsRange errcode = parse_memory_size(tail, &max_direct_memory_size, 0); |
dholmes@3902 | 2834 | if (errcode != arg_in_range) { |
dholmes@3902 | 2835 | jio_fprintf(defaultStream::error_stream(), |
dholmes@3902 | 2836 | "Invalid maximum direct memory size: %s\n", |
dholmes@3902 | 2837 | option->optionString); |
dholmes@3902 | 2838 | describe_range_error(errcode); |
dholmes@3902 | 2839 | return JNI_EINVAL; |
dholmes@3902 | 2840 | } |
dholmes@3902 | 2841 | FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); |
coleenp@4189 | 2842 | } else if (match_option(option, "-XX:+UseVMInterruptibleIO", &tail)) { |
coleenp@4189 | 2843 | // NOTE! In JDK 9, the UseVMInterruptibleIO flag will completely go |
coleenp@4189 | 2844 | // away and will cause VM initialization failures! |
coleenp@4189 | 2845 | warning("-XX:+UseVMInterruptibleIO is obsolete and will be removed in a future release."); |
coleenp@4189 | 2846 | FLAG_SET_CMDLINE(bool, UseVMInterruptibleIO, true); |
ysr@1580 | 2847 | } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
duke@435 | 2848 | // Skip -XX:Flags= since that case has already been handled |
duke@435 | 2849 | if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { |
duke@435 | 2850 | if (!process_argument(tail, args->ignoreUnrecognized, origin)) { |
duke@435 | 2851 | return JNI_EINVAL; |
duke@435 | 2852 | } |
duke@435 | 2853 | } |
duke@435 | 2854 | // Unknown option |
duke@435 | 2855 | } else if (is_bad_option(option, args->ignoreUnrecognized)) { |
duke@435 | 2856 | return JNI_ERR; |
duke@435 | 2857 | } |
duke@435 | 2858 | } |
minqi@2964 | 2859 | |
xlu@884 | 2860 | // Change the default value for flags which have different default values |
xlu@884 | 2861 | // when working with older JDKs. |
aph@2034 | 2862 | #ifdef LINUX |
aph@2034 | 2863 | if (JDK_Version::current().compare_major(6) <= 0 && |
aph@2034 | 2864 | FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
aph@2034 | 2865 | FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
aph@2034 | 2866 | } |
aph@2034 | 2867 | #endif // LINUX |
duke@435 | 2868 | return JNI_OK; |
duke@435 | 2869 | } |
duke@435 | 2870 | |
duke@435 | 2871 | jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { |
duke@435 | 2872 | // This must be done after all -D arguments have been processed. |
duke@435 | 2873 | scp_p->expand_endorsed(); |
duke@435 | 2874 | |
duke@435 | 2875 | if (scp_assembly_required || scp_p->get_endorsed() != NULL) { |
duke@435 | 2876 | // Assemble the bootclasspath elements into the final path. |
duke@435 | 2877 | Arguments::set_sysclasspath(scp_p->combined_path()); |
duke@435 | 2878 | } |
duke@435 | 2879 | |
duke@435 | 2880 | // This must be done after all arguments have been processed. |
duke@435 | 2881 | // java_compiler() true means set to "NONE" or empty. |
duke@435 | 2882 | if (java_compiler() && !xdebug_mode()) { |
duke@435 | 2883 | // For backwards compatibility, we switch to interpreted mode if |
duke@435 | 2884 | // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was |
duke@435 | 2885 | // not specified. |
duke@435 | 2886 | set_mode_flags(_int); |
duke@435 | 2887 | } |
duke@435 | 2888 | if (CompileThreshold == 0) { |
duke@435 | 2889 | set_mode_flags(_int); |
duke@435 | 2890 | } |
duke@435 | 2891 | |
duke@435 | 2892 | #ifndef COMPILER2 |
duke@435 | 2893 | // Don't degrade server performance for footprint |
duke@435 | 2894 | if (FLAG_IS_DEFAULT(UseLargePages) && |
duke@435 | 2895 | MaxHeapSize < LargePageHeapSizeThreshold) { |
duke@435 | 2896 | // No need for large granularity pages w/small heaps. |
duke@435 | 2897 | // Note that large pages are enabled/disabled for both the |
duke@435 | 2898 | // Java heap and the code cache. |
duke@435 | 2899 | FLAG_SET_DEFAULT(UseLargePages, false); |
duke@435 | 2900 | SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); |
duke@435 | 2901 | SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); |
duke@435 | 2902 | } |
ysr@777 | 2903 | |
kvn@1686 | 2904 | // Tiered compilation is undefined with C1. |
kvn@1686 | 2905 | TieredCompilation = false; |
duke@435 | 2906 | #else |
duke@435 | 2907 | if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { |
duke@435 | 2908 | FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); |
duke@435 | 2909 | } |
duke@435 | 2910 | #endif |
duke@435 | 2911 | |
bobv@2036 | 2912 | // If we are running in a headless jre, force java.awt.headless property |
bobv@2036 | 2913 | // to be true unless the property has already been set. |
bobv@2036 | 2914 | // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
bobv@2036 | 2915 | if (os::is_headless_jre()) { |
bobv@2036 | 2916 | const char* headless = Arguments::get_property("java.awt.headless"); |
bobv@2036 | 2917 | if (headless == NULL) { |
bobv@2036 | 2918 | char envbuffer[128]; |
bobv@2036 | 2919 | if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
bobv@2036 | 2920 | if (!add_property("java.awt.headless=true")) { |
bobv@2036 | 2921 | return JNI_ENOMEM; |
bobv@2036 | 2922 | } |
bobv@2036 | 2923 | } else { |
bobv@2036 | 2924 | char buffer[256]; |
bobv@2036 | 2925 | strcpy(buffer, "java.awt.headless="); |
bobv@2036 | 2926 | strcat(buffer, envbuffer); |
bobv@2036 | 2927 | if (!add_property(buffer)) { |
bobv@2036 | 2928 | return JNI_ENOMEM; |
bobv@2036 | 2929 | } |
bobv@2036 | 2930 | } |
bobv@2036 | 2931 | } |
bobv@2036 | 2932 | } |
bobv@2036 | 2933 | |
duke@435 | 2934 | if (!check_vm_args_consistency()) { |
duke@435 | 2935 | return JNI_ERR; |
duke@435 | 2936 | } |
duke@435 | 2937 | |
duke@435 | 2938 | return JNI_OK; |
duke@435 | 2939 | } |
duke@435 | 2940 | |
duke@435 | 2941 | jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { |
duke@435 | 2942 | return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, |
duke@435 | 2943 | scp_assembly_required_p); |
duke@435 | 2944 | } |
duke@435 | 2945 | |
duke@435 | 2946 | jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { |
duke@435 | 2947 | return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, |
duke@435 | 2948 | scp_assembly_required_p); |
duke@435 | 2949 | } |
duke@435 | 2950 | |
duke@435 | 2951 | jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { |
duke@435 | 2952 | const int N_MAX_OPTIONS = 64; |
duke@435 | 2953 | const int OPTION_BUFFER_SIZE = 1024; |
duke@435 | 2954 | char buffer[OPTION_BUFFER_SIZE]; |
duke@435 | 2955 | |
duke@435 | 2956 | // The variable will be ignored if it exceeds the length of the buffer. |
duke@435 | 2957 | // Don't check this variable if user has special privileges |
duke@435 | 2958 | // (e.g. unix su command). |
duke@435 | 2959 | if (os::getenv(name, buffer, sizeof(buffer)) && |
duke@435 | 2960 | !os::have_special_privileges()) { |
duke@435 | 2961 | JavaVMOption options[N_MAX_OPTIONS]; // Construct option array |
duke@435 | 2962 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2963 | "Picked up %s: %s\n", name, buffer); |
duke@435 | 2964 | char* rd = buffer; // pointer to the input string (rd) |
duke@435 | 2965 | int i; |
duke@435 | 2966 | for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string |
duke@435 | 2967 | while (isspace(*rd)) rd++; // skip whitespace |
duke@435 | 2968 | if (*rd == 0) break; // we re done when the input string is read completely |
duke@435 | 2969 | |
duke@435 | 2970 | // The output, option string, overwrites the input string. |
duke@435 | 2971 | // Because of quoting, the pointer to the option string (wrt) may lag the pointer to |
duke@435 | 2972 | // input string (rd). |
duke@435 | 2973 | char* wrt = rd; |
duke@435 | 2974 | |
duke@435 | 2975 | options[i++].optionString = wrt; // Fill in option |
duke@435 | 2976 | while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL |
duke@435 | 2977 | if (*rd == '\'' || *rd == '"') { // handle a quoted string |
duke@435 | 2978 | int quote = *rd; // matching quote to look for |
duke@435 | 2979 | rd++; // don't copy open quote |
duke@435 | 2980 | while (*rd != quote) { // include everything (even spaces) up until quote |
duke@435 | 2981 | if (*rd == 0) { // string termination means unmatched string |
duke@435 | 2982 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2983 | "Unmatched quote in %s\n", name); |
duke@435 | 2984 | return JNI_ERR; |
duke@435 | 2985 | } |
duke@435 | 2986 | *wrt++ = *rd++; // copy to option string |
duke@435 | 2987 | } |
duke@435 | 2988 | rd++; // don't copy close quote |
duke@435 | 2989 | } else { |
duke@435 | 2990 | *wrt++ = *rd++; // copy to option string |
duke@435 | 2991 | } |
duke@435 | 2992 | } |
duke@435 | 2993 | // Need to check if we're done before writing a NULL, |
duke@435 | 2994 | // because the write could be to the byte that rd is pointing to. |
duke@435 | 2995 | if (*rd++ == 0) { |
duke@435 | 2996 | *wrt = 0; |
duke@435 | 2997 | break; |
duke@435 | 2998 | } |
duke@435 | 2999 | *wrt = 0; // Zero terminate option |
duke@435 | 3000 | } |
duke@435 | 3001 | // Construct JavaVMInitArgs structure and parse as if it was part of the command line |
duke@435 | 3002 | JavaVMInitArgs vm_args; |
duke@435 | 3003 | vm_args.version = JNI_VERSION_1_2; |
duke@435 | 3004 | vm_args.options = options; |
duke@435 | 3005 | vm_args.nOptions = i; |
kvn@999 | 3006 | vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
duke@435 | 3007 | |
duke@435 | 3008 | if (PrintVMOptions) { |
duke@435 | 3009 | const char* tail; |
duke@435 | 3010 | for (int i = 0; i < vm_args.nOptions; i++) { |
duke@435 | 3011 | const JavaVMOption *option = vm_args.options + i; |
duke@435 | 3012 | if (match_option(option, "-XX:", &tail)) { |
duke@435 | 3013 | logOption(tail); |
duke@435 | 3014 | } |
duke@435 | 3015 | } |
duke@435 | 3016 | } |
duke@435 | 3017 | |
duke@435 | 3018 | return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); |
duke@435 | 3019 | } |
duke@435 | 3020 | return JNI_OK; |
duke@435 | 3021 | } |
duke@435 | 3022 | |
jcoomes@2644 | 3023 | void Arguments::set_shared_spaces_flags() { |
jcoomes@2660 | 3024 | const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
jcoomes@2660 | 3025 | const bool might_share = must_share || UseSharedSpaces; |
jcoomes@2660 | 3026 | |
coleenp@4037 | 3027 | // CompressedOops cannot be used with CDS. The offsets of oopmaps and |
coleenp@4037 | 3028 | // static fields are incorrect in the archive. With some more clever |
coleenp@4037 | 3029 | // initialization, this restriction can probably be lifted. |
coleenp@4037 | 3030 | // ??? UseLargePages might be okay now |
coleenp@4037 | 3031 | const bool cannot_share = UseCompressedOops || |
coleenp@4037 | 3032 | (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); |
jcoomes@2644 | 3033 | if (cannot_share) { |
jcoomes@2644 | 3034 | if (must_share) { |
coleenp@4048 | 3035 | warning("disabling large pages %s" |
jcoomes@2660 | 3036 | "because of %s", "" LP64_ONLY("and compressed oops "), |
jcoomes@2660 | 3037 | DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); |
jcoomes@2660 | 3038 | FLAG_SET_CMDLINE(bool, UseLargePages, false); |
jcoomes@2660 | 3039 | LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); |
coleenp@4037 | 3040 | LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); |
jcoomes@2644 | 3041 | } else { |
coleenp@4037 | 3042 | // Prefer compressed oops and large pages to class data sharing |
jcoomes@2644 | 3043 | if (UseSharedSpaces && Verbose) { |
coleenp@4037 | 3044 | warning("turning off use of shared archive because of large pages%s", |
coleenp@4037 | 3045 | "" LP64_ONLY(" and/or compressed oops")); |
jcoomes@2644 | 3046 | } |
jcoomes@2644 | 3047 | no_shared_spaces(); |
jcoomes@2644 | 3048 | } |
jcoomes@2644 | 3049 | } else if (UseLargePages && might_share) { |
jcoomes@2644 | 3050 | // Disable large pages to allow shared spaces. This is sub-optimal, since |
jcoomes@2644 | 3051 | // there may not even be a shared archive to use. |
jcoomes@2644 | 3052 | FLAG_SET_DEFAULT(UseLargePages, false); |
jcoomes@2644 | 3053 | } |
coleenp@4037 | 3054 | |
coleenp@4037 | 3055 | if (DumpSharedSpaces) { |
coleenp@4037 | 3056 | if (RequireSharedSpaces) { |
coleenp@4037 | 3057 | warning("cannot dump shared archive while using shared archive"); |
coleenp@4037 | 3058 | } |
coleenp@4037 | 3059 | UseSharedSpaces = false; |
coleenp@4037 | 3060 | } |
jcoomes@2644 | 3061 | } |
iveresov@2246 | 3062 | |
jcoomes@2994 | 3063 | // Disable options not supported in this release, with a warning if they |
jcoomes@2994 | 3064 | // were explicitly requested on the command-line |
jcoomes@2994 | 3065 | #define UNSUPPORTED_OPTION(opt, description) \ |
jcoomes@2994 | 3066 | do { \ |
jcoomes@2994 | 3067 | if (opt) { \ |
jcoomes@2994 | 3068 | if (FLAG_IS_CMDLINE(opt)) { \ |
jcoomes@2994 | 3069 | warning(description " is disabled in this release."); \ |
jcoomes@2994 | 3070 | } \ |
jcoomes@2994 | 3071 | FLAG_SET_DEFAULT(opt, false); \ |
jcoomes@2994 | 3072 | } \ |
jcoomes@2994 | 3073 | } while(0) |
jcoomes@2994 | 3074 | |
duke@435 | 3075 | // Parse entry point called from JNI_CreateJavaVM |
duke@435 | 3076 | |
duke@435 | 3077 | jint Arguments::parse(const JavaVMInitArgs* args) { |
duke@435 | 3078 | |
duke@435 | 3079 | // Sharing support |
duke@435 | 3080 | // Construct the path to the archive |
duke@435 | 3081 | char jvm_path[JVM_MAXPATHLEN]; |
duke@435 | 3082 | os::jvm_path(jvm_path, sizeof(jvm_path)); |
duke@435 | 3083 | char *end = strrchr(jvm_path, *os::file_separator()); |
duke@435 | 3084 | if (end != NULL) *end = '\0'; |
duke@435 | 3085 | char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + |
zgu@3900 | 3086 | strlen(os::file_separator()) + 20, mtInternal); |
duke@435 | 3087 | if (shared_archive_path == NULL) return JNI_ENOMEM; |
duke@435 | 3088 | strcpy(shared_archive_path, jvm_path); |
duke@435 | 3089 | strcat(shared_archive_path, os::file_separator()); |
duke@435 | 3090 | strcat(shared_archive_path, "classes"); |
duke@435 | 3091 | strcat(shared_archive_path, ".jsa"); |
duke@435 | 3092 | SharedArchivePath = shared_archive_path; |
duke@435 | 3093 | |
duke@435 | 3094 | // Remaining part of option string |
duke@435 | 3095 | const char* tail; |
duke@435 | 3096 | |
duke@435 | 3097 | // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. |
kamg@3899 | 3098 | const char* hotspotrc = ".hotspotrc"; |
duke@435 | 3099 | bool settings_file_specified = false; |
kamg@3899 | 3100 | bool needs_hotspotrc_warning = false; |
kamg@3899 | 3101 | |
kvn@999 | 3102 | const char* flags_file; |
duke@435 | 3103 | int index; |
duke@435 | 3104 | for (index = 0; index < args->nOptions; index++) { |
duke@435 | 3105 | const JavaVMOption *option = args->options + index; |
duke@435 | 3106 | if (match_option(option, "-XX:Flags=", &tail)) { |
kvn@999 | 3107 | flags_file = tail; |
duke@435 | 3108 | settings_file_specified = true; |
duke@435 | 3109 | } |
duke@435 | 3110 | if (match_option(option, "-XX:+PrintVMOptions", &tail)) { |
duke@435 | 3111 | PrintVMOptions = true; |
duke@435 | 3112 | } |
kvn@688 | 3113 | if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
kvn@688 | 3114 | PrintVMOptions = false; |
kvn@688 | 3115 | } |
kvn@999 | 3116 | if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
kvn@999 | 3117 | IgnoreUnrecognizedVMOptions = true; |
kvn@999 | 3118 | } |
kvn@999 | 3119 | if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { |
kvn@999 | 3120 | IgnoreUnrecognizedVMOptions = false; |
kvn@999 | 3121 | } |
kvn@1585 | 3122 | if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
fparain@3402 | 3123 | CommandLineFlags::printFlags(tty, false); |
kvn@1585 | 3124 | vm_exit(0); |
kvn@1585 | 3125 | } |
zgu@3900 | 3126 | if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { |
jprovino@4165 | 3127 | #if INCLUDE_NMT |
zgu@3900 | 3128 | MemTracker::init_tracking_options(tail); |
jprovino@4165 | 3129 | #else |
jprovino@4165 | 3130 | warning("Native Memory Tracking is not supported in this VM"); |
jprovino@4165 | 3131 | #endif |
zgu@3900 | 3132 | } |
zgu@3900 | 3133 | |
ikrylov@2123 | 3134 | |
ikrylov@2123 | 3135 | #ifndef PRODUCT |
ikrylov@2123 | 3136 | if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
fparain@3402 | 3137 | CommandLineFlags::printFlags(tty, true); |
ikrylov@2123 | 3138 | vm_exit(0); |
ikrylov@2123 | 3139 | } |
ikrylov@2123 | 3140 | #endif |
kvn@999 | 3141 | } |
kvn@999 | 3142 | |
kvn@999 | 3143 | if (IgnoreUnrecognizedVMOptions) { |
kvn@999 | 3144 | // uncast const to modify the flag args->ignoreUnrecognized |
kvn@999 | 3145 | *(jboolean*)(&args->ignoreUnrecognized) = true; |
kvn@999 | 3146 | } |
kvn@999 | 3147 | |
kvn@999 | 3148 | // Parse specified settings file |
kvn@999 | 3149 | if (settings_file_specified) { |
kvn@999 | 3150 | if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { |
kvn@999 | 3151 | return JNI_EINVAL; |
kvn@999 | 3152 | } |
kamg@3899 | 3153 | } else { |
kamg@3853 | 3154 | #ifdef ASSERT |
kamg@3899 | 3155 | // Parse default .hotspotrc settings file |
duke@435 | 3156 | if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
duke@435 | 3157 | return JNI_EINVAL; |
duke@435 | 3158 | } |
kamg@3899 | 3159 | #else |
kamg@3899 | 3160 | struct stat buf; |
kamg@3899 | 3161 | if (os::stat(hotspotrc, &buf) == 0) { |
kamg@3899 | 3162 | needs_hotspotrc_warning = true; |
kamg@3899 | 3163 | } |
kamg@3899 | 3164 | #endif |
duke@435 | 3165 | } |
duke@435 | 3166 | |
duke@435 | 3167 | if (PrintVMOptions) { |
duke@435 | 3168 | for (index = 0; index < args->nOptions; index++) { |
duke@435 | 3169 | const JavaVMOption *option = args->options + index; |
duke@435 | 3170 | if (match_option(option, "-XX:", &tail)) { |
duke@435 | 3171 | logOption(tail); |
duke@435 | 3172 | } |
duke@435 | 3173 | } |
duke@435 | 3174 | } |
duke@435 | 3175 | |
duke@435 | 3176 | // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS |
duke@435 | 3177 | jint result = parse_vm_init_args(args); |
duke@435 | 3178 | if (result != JNI_OK) { |
duke@435 | 3179 | return result; |
duke@435 | 3180 | } |
duke@435 | 3181 | |
kamg@3899 | 3182 | // Delay warning until here so that we've had a chance to process |
kamg@3899 | 3183 | // the -XX:-PrintWarnings flag |
kamg@3899 | 3184 | if (needs_hotspotrc_warning) { |
kamg@3899 | 3185 | warning("%s file is present but has been ignored. " |
kamg@3899 | 3186 | "Run with -XX:Flags=%s to load the file.", |
kamg@3899 | 3187 | hotspotrc, hotspotrc); |
kamg@3899 | 3188 | } |
kamg@3899 | 3189 | |
collins@3758 | 3190 | #if (defined JAVASE_EMBEDDED || defined ARM) |
jcoomes@2994 | 3191 | UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
jcoomes@2994 | 3192 | #endif |
jcoomes@2994 | 3193 | |
coleenp@4228 | 3194 | #ifdef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
coleenp@4228 | 3195 | UNSUPPORTED_OPTION(UseLargePages, "-XX:+UseLargePages"); |
coleenp@4228 | 3196 | #endif |
coleenp@4228 | 3197 | |
jprovino@4542 | 3198 | #if !INCLUDE_ALL_GCS |
jprovino@4165 | 3199 | if (UseParallelGC) { |
jprovino@4165 | 3200 | warning("Parallel GC is not supported in this VM. Using Serial GC."); |
jprovino@4165 | 3201 | } |
jprovino@4165 | 3202 | if (UseParallelOldGC) { |
jprovino@4165 | 3203 | warning("Parallel Old GC is not supported in this VM. Using Serial GC."); |
jprovino@4165 | 3204 | } |
jprovino@4165 | 3205 | if (UseConcMarkSweepGC) { |
jprovino@4165 | 3206 | warning("Concurrent Mark Sweep GC is not supported in this VM. Using Serial GC."); |
jprovino@4165 | 3207 | } |
jprovino@4165 | 3208 | if (UseParNewGC) { |
jprovino@4165 | 3209 | warning("Par New GC is not supported in this VM. Using Serial GC."); |
jprovino@4165 | 3210 | } |
jprovino@4542 | 3211 | #endif // INCLUDE_ALL_GCS |
jprovino@4165 | 3212 | |
duke@435 | 3213 | #ifndef PRODUCT |
duke@435 | 3214 | if (TraceBytecodesAt != 0) { |
duke@435 | 3215 | TraceBytecodes = true; |
duke@435 | 3216 | } |
duke@435 | 3217 | if (CountCompiledCalls) { |
duke@435 | 3218 | if (UseCounterDecay) { |
duke@435 | 3219 | warning("UseCounterDecay disabled because CountCalls is set"); |
duke@435 | 3220 | UseCounterDecay = false; |
duke@435 | 3221 | } |
duke@435 | 3222 | } |
duke@435 | 3223 | #endif // PRODUCT |
duke@435 | 3224 | |
twisti@2698 | 3225 | // JSR 292 is not supported before 1.7 |
twisti@2698 | 3226 | if (!JDK_Version::is_gte_jdk17x_version()) { |
twisti@2698 | 3227 | if (EnableInvokeDynamic) { |
twisti@2698 | 3228 | if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
twisti@2698 | 3229 | warning("JSR 292 is not supported before 1.7. Disabling support."); |
twisti@2698 | 3230 | } |
twisti@2698 | 3231 | EnableInvokeDynamic = false; |
jrose@1145 | 3232 | } |
jrose@1145 | 3233 | } |
twisti@2698 | 3234 | |
twisti@2698 | 3235 | if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
jrose@1424 | 3236 | if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
twisti@2698 | 3237 | warning("forcing ScavengeRootsInCode non-zero because EnableInvokeDynamic is true"); |
jrose@1424 | 3238 | } |
jrose@1424 | 3239 | ScavengeRootsInCode = 1; |
jrose@1424 | 3240 | } |
jrose@1145 | 3241 | |
duke@435 | 3242 | if (PrintGCDetails) { |
duke@435 | 3243 | // Turn on -verbose:gc options as well |
duke@435 | 3244 | PrintGC = true; |
duke@435 | 3245 | } |
duke@435 | 3246 | |
brutisso@3767 | 3247 | if (!JDK_Version::is_gte_jdk18x_version()) { |
brutisso@3767 | 3248 | // To avoid changing the log format for 7 updates this flag is only |
brutisso@3767 | 3249 | // true by default in JDK8 and above. |
brutisso@3767 | 3250 | if (FLAG_IS_DEFAULT(PrintGCCause)) { |
brutisso@3767 | 3251 | FLAG_SET_DEFAULT(PrintGCCause, false); |
brutisso@3767 | 3252 | } |
brutisso@3767 | 3253 | } |
brutisso@3767 | 3254 | |
kvn@1926 | 3255 | // Set object alignment values. |
kvn@1926 | 3256 | set_object_alignment(); |
kvn@1926 | 3257 | |
jprovino@4542 | 3258 | #if !INCLUDE_ALL_GCS |
phh@1499 | 3259 | force_serial_gc(); |
jprovino@4542 | 3260 | #endif // INCLUDE_ALL_GCS |
jprovino@4165 | 3261 | #if !INCLUDE_CDS |
duke@435 | 3262 | no_shared_spaces(); |
jprovino@4165 | 3263 | #endif // INCLUDE_CDS |
duke@435 | 3264 | |
duke@435 | 3265 | // Set flags based on ergonomics. |
duke@435 | 3266 | set_ergonomics_flags(); |
duke@435 | 3267 | |
jcoomes@2644 | 3268 | set_shared_spaces_flags(); |
twisti@1570 | 3269 | |
jmasa@445 | 3270 | // Check the GC selections again. |
jmasa@445 | 3271 | if (!check_gc_consistency()) { |
jmasa@445 | 3272 | return JNI_EINVAL; |
jmasa@445 | 3273 | } |
jmasa@445 | 3274 | |
iveresov@2138 | 3275 | if (TieredCompilation) { |
iveresov@2138 | 3276 | set_tiered_flags(); |
iveresov@2138 | 3277 | } else { |
iveresov@2138 | 3278 | // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. |
iveresov@2138 | 3279 | if (CompilationPolicyChoice >= 2) { |
iveresov@2138 | 3280 | vm_exit_during_initialization( |
iveresov@2138 | 3281 | "Incompatible compilation policy selected", NULL); |
iveresov@2138 | 3282 | } |
iveresov@2138 | 3283 | } |
iveresov@2138 | 3284 | |
ysr@2650 | 3285 | // Set heap size based on available physical memory |
ysr@2650 | 3286 | set_heap_size(); |
jprovino@4165 | 3287 | |
jprovino@4542 | 3288 | #if INCLUDE_ALL_GCS |
ysr@2650 | 3289 | // Set per-collector flags |
ysr@2650 | 3290 | if (UseParallelGC || UseParallelOldGC) { |
ysr@2650 | 3291 | set_parallel_gc_flags(); |
ysr@2650 | 3292 | } else if (UseConcMarkSweepGC) { // should be done before ParNew check below |
jmasa@445 | 3293 | set_cms_and_parnew_gc_flags(); |
ysr@2650 | 3294 | } else if (UseParNewGC) { // skipped if CMS is set above |
ysr@2650 | 3295 | set_parnew_gc_flags(); |
ysr@2650 | 3296 | } else if (UseG1GC) { |
ysr@2650 | 3297 | set_g1_gc_flags(); |
ysr@777 | 3298 | } |
brutisso@4388 | 3299 | check_deprecated_gcs(); |
jprovino@4542 | 3300 | #else // INCLUDE_ALL_GCS |
duke@435 | 3301 | assert(verify_serial_gc_flags(), "SerialGC unset"); |
jprovino@4542 | 3302 | #endif // INCLUDE_ALL_GCS |
duke@435 | 3303 | |
duke@435 | 3304 | // Set bytecode rewriting flags |
duke@435 | 3305 | set_bytecode_flags(); |
duke@435 | 3306 | |
duke@435 | 3307 | // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. |
duke@435 | 3308 | set_aggressive_opts_flags(); |
duke@435 | 3309 | |
coleenp@2546 | 3310 | // Turn off biased locking for locking debug mode flags, |
coleenp@2546 | 3311 | // which are subtlely different from each other but neither works with |
coleenp@2546 | 3312 | // biased locking. |
coleenp@2613 | 3313 | if (UseHeavyMonitors |
coleenp@2613 | 3314 | #ifdef COMPILER1 |
coleenp@2613 | 3315 | || !UseFastLocking |
coleenp@2613 | 3316 | #endif // COMPILER1 |
coleenp@2613 | 3317 | ) { |
coleenp@2546 | 3318 | if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
coleenp@2546 | 3319 | // flag set to true on command line; warn the user that they |
coleenp@2546 | 3320 | // can't enable biased locking here |
coleenp@2546 | 3321 | warning("Biased Locking is not supported with locking debug flags" |
coleenp@2546 | 3322 | "; ignoring UseBiasedLocking flag." ); |
coleenp@2546 | 3323 | } |
coleenp@2546 | 3324 | UseBiasedLocking = false; |
coleenp@2546 | 3325 | } |
coleenp@2546 | 3326 | |
duke@435 | 3327 | #ifdef CC_INTERP |
twisti@1566 | 3328 | // Clear flags not supported by the C++ interpreter |
twisti@1566 | 3329 | FLAG_SET_DEFAULT(ProfileInterpreter, false); |
duke@435 | 3330 | FLAG_SET_DEFAULT(UseBiasedLocking, false); |
twisti@1566 | 3331 | LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
coleenp@4037 | 3332 | LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedKlassPointers, false)); |
twisti@1566 | 3333 | #endif // CC_INTERP |
twisti@1566 | 3334 | |
kvn@855 | 3335 | #ifdef COMPILER2 |
kvn@855 | 3336 | if (!UseBiasedLocking || EmitSync != 0) { |
kvn@855 | 3337 | UseOptoBiasInlining = false; |
kvn@855 | 3338 | } |
kvn@3406 | 3339 | if (!EliminateLocks) { |
kvn@3406 | 3340 | EliminateNestedLocks = false; |
kvn@3406 | 3341 | } |
roland@4409 | 3342 | if (!Inline) { |
roland@4409 | 3343 | IncrementalInline = false; |
roland@4409 | 3344 | } |
roland@4409 | 3345 | #ifndef PRODUCT |
roland@4409 | 3346 | if (!IncrementalInline) { |
roland@4409 | 3347 | AlwaysIncrementalInline = false; |
roland@4409 | 3348 | } |
roland@4409 | 3349 | #endif |
roland@4409 | 3350 | if (IncrementalInline && FLAG_IS_DEFAULT(MaxNodeLimit)) { |
roland@4409 | 3351 | // incremental inlining: bump MaxNodeLimit |
roland@4409 | 3352 | FLAG_SET_DEFAULT(MaxNodeLimit, (intx)75000); |
roland@4409 | 3353 | } |
kvn@855 | 3354 | #endif |
kvn@855 | 3355 | |
jrose@1590 | 3356 | if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
jrose@1590 | 3357 | warning("PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output"); |
jrose@1590 | 3358 | DebugNonSafepoints = true; |
jrose@1590 | 3359 | } |
jrose@1590 | 3360 | |
kvn@1623 | 3361 | #ifndef PRODUCT |
kvn@1623 | 3362 | if (CompileTheWorld) { |
kvn@1623 | 3363 | // Force NmethodSweeper to sweep whole CodeCache each time. |
kvn@1623 | 3364 | if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
kvn@1623 | 3365 | NmethodSweepFraction = 1; |
kvn@1623 | 3366 | } |
kvn@1623 | 3367 | } |
kvn@1623 | 3368 | #endif |
kvn@1623 | 3369 | |
duke@435 | 3370 | if (PrintCommandLineFlags) { |
fparain@3402 | 3371 | CommandLineFlags::printSetFlags(tty); |
duke@435 | 3372 | } |
duke@435 | 3373 | |
bobv@2036 | 3374 | // Apply CPU specific policy for the BiasedLocking |
bobv@2036 | 3375 | if (UseBiasedLocking) { |
bobv@2036 | 3376 | if (!VM_Version::use_biased_locking() && |
bobv@2036 | 3377 | !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
bobv@2036 | 3378 | UseBiasedLocking = false; |
bobv@2036 | 3379 | } |
bobv@2036 | 3380 | } |
bobv@2036 | 3381 | |
sla@2584 | 3382 | // set PauseAtExit if the gamma launcher was used and a debugger is attached |
sla@2584 | 3383 | // but only if not already set on the commandline |
sla@2584 | 3384 | if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
sla@2584 | 3385 | bool set = false; |
sla@2584 | 3386 | CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
sla@2584 | 3387 | if (!set) { |
sla@2584 | 3388 | FLAG_SET_DEFAULT(PauseAtExit, true); |
sla@2584 | 3389 | } |
sla@2584 | 3390 | } |
sla@2584 | 3391 | |
duke@435 | 3392 | return JNI_OK; |
duke@435 | 3393 | } |
duke@435 | 3394 | |
brutisso@4296 | 3395 | jint Arguments::adjust_after_os() { |
jprovino@4542 | 3396 | #if INCLUDE_ALL_GCS |
brutisso@4296 | 3397 | if (UseParallelGC || UseParallelOldGC) { |
brutisso@4296 | 3398 | if (UseNUMA) { |
brutisso@4296 | 3399 | if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
brutisso@4296 | 3400 | FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
brutisso@4296 | 3401 | } |
brutisso@4296 | 3402 | // For those collectors or operating systems (eg, Windows) that do |
brutisso@4296 | 3403 | // not support full UseNUMA, we will map to UseNUMAInterleaving for now |
brutisso@4296 | 3404 | UseNUMAInterleaving = true; |
brutisso@4296 | 3405 | } |
brutisso@4296 | 3406 | } |
jprovino@4542 | 3407 | #endif // INCLUDE_ALL_GCS |
brutisso@4296 | 3408 | return JNI_OK; |
brutisso@4296 | 3409 | } |
brutisso@4296 | 3410 | |
duke@435 | 3411 | int Arguments::PropertyList_count(SystemProperty* pl) { |
duke@435 | 3412 | int count = 0; |
duke@435 | 3413 | while(pl != NULL) { |
duke@435 | 3414 | count++; |
duke@435 | 3415 | pl = pl->next(); |
duke@435 | 3416 | } |
duke@435 | 3417 | return count; |
duke@435 | 3418 | } |
duke@435 | 3419 | |
duke@435 | 3420 | const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { |
duke@435 | 3421 | assert(key != NULL, "just checking"); |
duke@435 | 3422 | SystemProperty* prop; |
duke@435 | 3423 | for (prop = pl; prop != NULL; prop = prop->next()) { |
duke@435 | 3424 | if (strcmp(key, prop->key()) == 0) return prop->value(); |
duke@435 | 3425 | } |
duke@435 | 3426 | return NULL; |
duke@435 | 3427 | } |
duke@435 | 3428 | |
duke@435 | 3429 | const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { |
duke@435 | 3430 | int count = 0; |
duke@435 | 3431 | const char* ret_val = NULL; |
duke@435 | 3432 | |
duke@435 | 3433 | while(pl != NULL) { |
duke@435 | 3434 | if(count >= index) { |
duke@435 | 3435 | ret_val = pl->key(); |
duke@435 | 3436 | break; |
duke@435 | 3437 | } |
duke@435 | 3438 | count++; |
duke@435 | 3439 | pl = pl->next(); |
duke@435 | 3440 | } |
duke@435 | 3441 | |
duke@435 | 3442 | return ret_val; |
duke@435 | 3443 | } |
duke@435 | 3444 | |
duke@435 | 3445 | char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { |
duke@435 | 3446 | int count = 0; |
duke@435 | 3447 | char* ret_val = NULL; |
duke@435 | 3448 | |
duke@435 | 3449 | while(pl != NULL) { |
duke@435 | 3450 | if(count >= index) { |
duke@435 | 3451 | ret_val = pl->value(); |
duke@435 | 3452 | break; |
duke@435 | 3453 | } |
duke@435 | 3454 | count++; |
duke@435 | 3455 | pl = pl->next(); |
duke@435 | 3456 | } |
duke@435 | 3457 | |
duke@435 | 3458 | return ret_val; |
duke@435 | 3459 | } |
duke@435 | 3460 | |
duke@435 | 3461 | void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { |
duke@435 | 3462 | SystemProperty* p = *plist; |
duke@435 | 3463 | if (p == NULL) { |
duke@435 | 3464 | *plist = new_p; |
duke@435 | 3465 | } else { |
duke@435 | 3466 | while (p->next() != NULL) { |
duke@435 | 3467 | p = p->next(); |
duke@435 | 3468 | } |
duke@435 | 3469 | p->set_next(new_p); |
duke@435 | 3470 | } |
duke@435 | 3471 | } |
duke@435 | 3472 | |
duke@435 | 3473 | void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { |
duke@435 | 3474 | if (plist == NULL) |
duke@435 | 3475 | return; |
duke@435 | 3476 | |
duke@435 | 3477 | SystemProperty* new_p = new SystemProperty(k, v, true); |
duke@435 | 3478 | PropertyList_add(plist, new_p); |
duke@435 | 3479 | } |
duke@435 | 3480 | |
duke@435 | 3481 | // This add maintains unique property key in the list. |
phh@1126 | 3482 | void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
duke@435 | 3483 | if (plist == NULL) |
duke@435 | 3484 | return; |
duke@435 | 3485 | |
duke@435 | 3486 | // If property key exist then update with new value. |
duke@435 | 3487 | SystemProperty* prop; |
duke@435 | 3488 | for (prop = *plist; prop != NULL; prop = prop->next()) { |
duke@435 | 3489 | if (strcmp(k, prop->key()) == 0) { |
phh@1126 | 3490 | if (append) { |
phh@1126 | 3491 | prop->append_value(v); |
phh@1126 | 3492 | } else { |
phh@1126 | 3493 | prop->set_value(v); |
phh@1126 | 3494 | } |
duke@435 | 3495 | return; |
duke@435 | 3496 | } |
duke@435 | 3497 | } |
duke@435 | 3498 | |
duke@435 | 3499 | PropertyList_add(plist, k, v); |
duke@435 | 3500 | } |
duke@435 | 3501 | |
duke@435 | 3502 | // Copies src into buf, replacing "%%" with "%" and "%p" with pid |
duke@435 | 3503 | // Returns true if all of the source pointed by src has been copied over to |
duke@435 | 3504 | // the destination buffer pointed by buf. Otherwise, returns false. |
duke@435 | 3505 | // Notes: |
duke@435 | 3506 | // 1. If the length (buflen) of the destination buffer excluding the |
duke@435 | 3507 | // NULL terminator character is not long enough for holding the expanded |
duke@435 | 3508 | // pid characters, it also returns false instead of returning the partially |
duke@435 | 3509 | // expanded one. |
duke@435 | 3510 | // 2. The passed in "buflen" should be large enough to hold the null terminator. |
duke@435 | 3511 | bool Arguments::copy_expand_pid(const char* src, size_t srclen, |
duke@435 | 3512 | char* buf, size_t buflen) { |
duke@435 | 3513 | const char* p = src; |
duke@435 | 3514 | char* b = buf; |
duke@435 | 3515 | const char* src_end = &src[srclen]; |
duke@435 | 3516 | char* buf_end = &buf[buflen - 1]; |
duke@435 | 3517 | |
duke@435 | 3518 | while (p < src_end && b < buf_end) { |
duke@435 | 3519 | if (*p == '%') { |
duke@435 | 3520 | switch (*(++p)) { |
duke@435 | 3521 | case '%': // "%%" ==> "%" |
duke@435 | 3522 | *b++ = *p++; |
duke@435 | 3523 | break; |
duke@435 | 3524 | case 'p': { // "%p" ==> current process id |
duke@435 | 3525 | // buf_end points to the character before the last character so |
duke@435 | 3526 | // that we could write '\0' to the end of the buffer. |
duke@435 | 3527 | size_t buf_sz = buf_end - b + 1; |
duke@435 | 3528 | int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); |
duke@435 | 3529 | |
duke@435 | 3530 | // if jio_snprintf fails or the buffer is not long enough to hold |
duke@435 | 3531 | // the expanded pid, returns false. |
duke@435 | 3532 | if (ret < 0 || ret >= (int)buf_sz) { |
duke@435 | 3533 | return false; |
duke@435 | 3534 | } else { |
duke@435 | 3535 | b += ret; |
duke@435 | 3536 | assert(*b == '\0', "fail in copy_expand_pid"); |
duke@435 | 3537 | if (p == src_end && b == buf_end + 1) { |
duke@435 | 3538 | // reach the end of the buffer. |
duke@435 | 3539 | return true; |
duke@435 | 3540 | } |
duke@435 | 3541 | } |
duke@435 | 3542 | p++; |
duke@435 | 3543 | break; |
duke@435 | 3544 | } |
duke@435 | 3545 | default : |
duke@435 | 3546 | *b++ = '%'; |
duke@435 | 3547 | } |
duke@435 | 3548 | } else { |
duke@435 | 3549 | *b++ = *p++; |
duke@435 | 3550 | } |
duke@435 | 3551 | } |
duke@435 | 3552 | *b = '\0'; |
duke@435 | 3553 | return (p == src_end); // return false if not all of the source was copied |
duke@435 | 3554 | } |