Tue, 15 Mar 2011 06:35:10 -0700
7024234: 2/3 jvmti tests fail assert(!_oops_are_stale) failed: oops are stale on Win-AMD64
Summary: Move initialization of the '_instance' field to avoid race with ServiceThread start.
Reviewed-by: dholmes, kamg, never, dsamersoff, ysr, coleenp, acorn
duke@435 | 1 | /* |
kevinw@2449 | 2 | * Copyright (c) 1997, 2011, 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" |
stefank@2314 | 27 | #include "compiler/compilerOracle.hpp" |
stefank@2314 | 28 | #include "memory/allocation.inline.hpp" |
stefank@2314 | 29 | #include "memory/cardTableRS.hpp" |
stefank@2314 | 30 | #include "memory/referenceProcessor.hpp" |
stefank@2314 | 31 | #include "memory/universe.inline.hpp" |
stefank@2314 | 32 | #include "oops/oop.inline.hpp" |
stefank@2314 | 33 | #include "prims/jvmtiExport.hpp" |
stefank@2314 | 34 | #include "runtime/arguments.hpp" |
stefank@2314 | 35 | #include "runtime/globals_extension.hpp" |
stefank@2314 | 36 | #include "runtime/java.hpp" |
stefank@2314 | 37 | #include "services/management.hpp" |
stefank@2314 | 38 | #include "utilities/defaultStream.hpp" |
stefank@2314 | 39 | #include "utilities/taskqueue.hpp" |
stefank@2314 | 40 | #ifdef TARGET_ARCH_x86 |
stefank@2314 | 41 | # include "vm_version_x86.hpp" |
stefank@2314 | 42 | #endif |
stefank@2314 | 43 | #ifdef TARGET_ARCH_sparc |
stefank@2314 | 44 | # include "vm_version_sparc.hpp" |
stefank@2314 | 45 | #endif |
stefank@2314 | 46 | #ifdef TARGET_ARCH_zero |
stefank@2314 | 47 | # include "vm_version_zero.hpp" |
stefank@2314 | 48 | #endif |
stefank@2314 | 49 | #ifdef TARGET_OS_FAMILY_linux |
stefank@2314 | 50 | # include "os_linux.inline.hpp" |
stefank@2314 | 51 | #endif |
stefank@2314 | 52 | #ifdef TARGET_OS_FAMILY_solaris |
stefank@2314 | 53 | # include "os_solaris.inline.hpp" |
stefank@2314 | 54 | #endif |
stefank@2314 | 55 | #ifdef TARGET_OS_FAMILY_windows |
stefank@2314 | 56 | # include "os_windows.inline.hpp" |
stefank@2314 | 57 | #endif |
stefank@2314 | 58 | #ifndef SERIALGC |
stefank@2314 | 59 | #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" |
stefank@2314 | 60 | #endif |
duke@435 | 61 | |
duke@435 | 62 | #define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp" |
duke@435 | 63 | #define DEFAULT_JAVA_LAUNCHER "generic" |
duke@435 | 64 | |
duke@435 | 65 | char** Arguments::_jvm_flags_array = NULL; |
duke@435 | 66 | int Arguments::_num_jvm_flags = 0; |
duke@435 | 67 | char** Arguments::_jvm_args_array = NULL; |
duke@435 | 68 | int Arguments::_num_jvm_args = 0; |
duke@435 | 69 | char* Arguments::_java_command = NULL; |
duke@435 | 70 | SystemProperty* Arguments::_system_properties = NULL; |
duke@435 | 71 | const char* Arguments::_gc_log_filename = NULL; |
duke@435 | 72 | bool Arguments::_has_profile = false; |
duke@435 | 73 | bool Arguments::_has_alloc_profile = false; |
duke@435 | 74 | uintx Arguments::_min_heap_size = 0; |
duke@435 | 75 | Arguments::Mode Arguments::_mode = _mixed; |
duke@435 | 76 | bool Arguments::_java_compiler = false; |
duke@435 | 77 | bool Arguments::_xdebug_mode = false; |
duke@435 | 78 | const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; |
duke@435 | 79 | const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; |
duke@435 | 80 | int Arguments::_sun_java_launcher_pid = -1; |
sla@2584 | 81 | bool Arguments::_created_by_gamma_launcher = false; |
duke@435 | 82 | |
duke@435 | 83 | // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) |
duke@435 | 84 | bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; |
duke@435 | 85 | bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; |
duke@435 | 86 | bool Arguments::_BackgroundCompilation = BackgroundCompilation; |
duke@435 | 87 | bool Arguments::_ClipInlining = ClipInlining; |
duke@435 | 88 | |
duke@435 | 89 | char* Arguments::SharedArchivePath = NULL; |
duke@435 | 90 | |
duke@435 | 91 | AgentLibraryList Arguments::_libraryList; |
duke@435 | 92 | AgentLibraryList Arguments::_agentList; |
duke@435 | 93 | |
duke@435 | 94 | abort_hook_t Arguments::_abort_hook = NULL; |
duke@435 | 95 | exit_hook_t Arguments::_exit_hook = NULL; |
duke@435 | 96 | vfprintf_hook_t Arguments::_vfprintf_hook = NULL; |
duke@435 | 97 | |
duke@435 | 98 | |
duke@435 | 99 | SystemProperty *Arguments::_java_ext_dirs = NULL; |
duke@435 | 100 | SystemProperty *Arguments::_java_endorsed_dirs = NULL; |
duke@435 | 101 | SystemProperty *Arguments::_sun_boot_library_path = NULL; |
duke@435 | 102 | SystemProperty *Arguments::_java_library_path = NULL; |
duke@435 | 103 | SystemProperty *Arguments::_java_home = NULL; |
duke@435 | 104 | SystemProperty *Arguments::_java_class_path = NULL; |
duke@435 | 105 | SystemProperty *Arguments::_sun_boot_class_path = NULL; |
duke@435 | 106 | |
duke@435 | 107 | char* Arguments::_meta_index_path = NULL; |
duke@435 | 108 | char* Arguments::_meta_index_dir = NULL; |
duke@435 | 109 | |
duke@435 | 110 | static bool force_client_mode = false; |
duke@435 | 111 | |
duke@435 | 112 | // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string |
duke@435 | 113 | |
duke@435 | 114 | static bool match_option(const JavaVMOption *option, const char* name, |
duke@435 | 115 | const char** tail) { |
duke@435 | 116 | int len = (int)strlen(name); |
duke@435 | 117 | if (strncmp(option->optionString, name, len) == 0) { |
duke@435 | 118 | *tail = option->optionString + len; |
duke@435 | 119 | return true; |
duke@435 | 120 | } else { |
duke@435 | 121 | return false; |
duke@435 | 122 | } |
duke@435 | 123 | } |
duke@435 | 124 | |
duke@435 | 125 | static void logOption(const char* opt) { |
duke@435 | 126 | if (PrintVMOptions) { |
duke@435 | 127 | jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); |
duke@435 | 128 | } |
duke@435 | 129 | } |
duke@435 | 130 | |
duke@435 | 131 | // Process java launcher properties. |
duke@435 | 132 | void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { |
duke@435 | 133 | // See if sun.java.launcher or sun.java.launcher.pid is defined. |
duke@435 | 134 | // Must do this before setting up other system properties, |
duke@435 | 135 | // as some of them may depend on launcher type. |
duke@435 | 136 | for (int index = 0; index < args->nOptions; index++) { |
duke@435 | 137 | const JavaVMOption* option = args->options + index; |
duke@435 | 138 | const char* tail; |
duke@435 | 139 | |
duke@435 | 140 | if (match_option(option, "-Dsun.java.launcher=", &tail)) { |
duke@435 | 141 | process_java_launcher_argument(tail, option->extraInfo); |
duke@435 | 142 | continue; |
duke@435 | 143 | } |
duke@435 | 144 | if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { |
duke@435 | 145 | _sun_java_launcher_pid = atoi(tail); |
duke@435 | 146 | continue; |
duke@435 | 147 | } |
duke@435 | 148 | } |
duke@435 | 149 | } |
duke@435 | 150 | |
duke@435 | 151 | // Initialize system properties key and value. |
duke@435 | 152 | void Arguments::init_system_properties() { |
duke@435 | 153 | |
duke@435 | 154 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", |
duke@435 | 155 | "Java Virtual Machine Specification", false)); |
duke@435 | 156 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); |
duke@435 | 157 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); |
duke@435 | 158 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); |
duke@435 | 159 | |
duke@435 | 160 | // following are JVMTI agent writeable properties. |
duke@435 | 161 | // Properties values are set to NULL and they are |
duke@435 | 162 | // os specific they are initialized in os::init_system_properties_values(). |
duke@435 | 163 | _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); |
duke@435 | 164 | _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); |
duke@435 | 165 | _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); |
duke@435 | 166 | _java_library_path = new SystemProperty("java.library.path", NULL, true); |
duke@435 | 167 | _java_home = new SystemProperty("java.home", NULL, true); |
duke@435 | 168 | _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); |
duke@435 | 169 | |
duke@435 | 170 | _java_class_path = new SystemProperty("java.class.path", "", true); |
duke@435 | 171 | |
duke@435 | 172 | // Add to System Property list. |
duke@435 | 173 | PropertyList_add(&_system_properties, _java_ext_dirs); |
duke@435 | 174 | PropertyList_add(&_system_properties, _java_endorsed_dirs); |
duke@435 | 175 | PropertyList_add(&_system_properties, _sun_boot_library_path); |
duke@435 | 176 | PropertyList_add(&_system_properties, _java_library_path); |
duke@435 | 177 | PropertyList_add(&_system_properties, _java_home); |
duke@435 | 178 | PropertyList_add(&_system_properties, _java_class_path); |
duke@435 | 179 | PropertyList_add(&_system_properties, _sun_boot_class_path); |
duke@435 | 180 | |
duke@435 | 181 | // Set OS specific system properties values |
duke@435 | 182 | os::init_system_properties_values(); |
duke@435 | 183 | } |
duke@435 | 184 | |
zgu@2219 | 185 | |
zgu@2219 | 186 | // Update/Initialize System properties after JDK version number is known |
zgu@2219 | 187 | void Arguments::init_version_specific_system_properties() { |
kamg@2298 | 188 | enum { bufsz = 16 }; |
kamg@2298 | 189 | char buffer[bufsz]; |
kamg@2298 | 190 | const char* spec_vendor = "Sun Microsystems Inc."; |
kamg@2298 | 191 | uint32_t spec_version = 0; |
kamg@2298 | 192 | |
kamg@2298 | 193 | if (JDK_Version::is_gte_jdk17x_version()) { |
kamg@2298 | 194 | spec_vendor = "Oracle Corporation"; |
kamg@2298 | 195 | spec_version = JDK_Version::current().major_version(); |
kamg@2298 | 196 | } |
kamg@2298 | 197 | jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
kamg@2298 | 198 | |
kamg@2298 | 199 | PropertyList_add(&_system_properties, |
kamg@2298 | 200 | new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
kamg@2298 | 201 | PropertyList_add(&_system_properties, |
kamg@2298 | 202 | new SystemProperty("java.vm.specification.version", buffer, false)); |
kamg@2298 | 203 | PropertyList_add(&_system_properties, |
kamg@2298 | 204 | new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
zgu@2219 | 205 | } |
zgu@2219 | 206 | |
kamg@677 | 207 | /** |
kamg@677 | 208 | * Provide a slightly more user-friendly way of eliminating -XX flags. |
kamg@677 | 209 | * When a flag is eliminated, it can be added to this list in order to |
kamg@677 | 210 | * continue accepting this flag on the command-line, while issuing a warning |
kamg@677 | 211 | * and ignoring the value. Once the JDK version reaches the 'accept_until' |
kamg@677 | 212 | * limit, we flatly refuse to admit the existence of the flag. This allows |
kamg@677 | 213 | * a flag to die correctly over JDK releases using HSX. |
kamg@677 | 214 | */ |
kamg@677 | 215 | typedef struct { |
kamg@677 | 216 | const char* name; |
kamg@677 | 217 | JDK_Version obsoleted_in; // when the flag went away |
kamg@677 | 218 | JDK_Version accept_until; // which version to start denying the existence |
kamg@677 | 219 | } ObsoleteFlag; |
duke@435 | 220 | |
kamg@677 | 221 | static ObsoleteFlag obsolete_jvm_flags[] = { |
kamg@677 | 222 | { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 223 | { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 224 | { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 225 | { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 226 | { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 227 | { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 228 | { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 229 | { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 230 | { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 231 | { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 232 | { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 233 | { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 234 | { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 235 | { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, |
phh@1499 | 236 | { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
phh@1499 | 237 | { "DefaultInitialRAMFraction", |
phh@1499 | 238 | JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
tonyp@2061 | 239 | { "UseDepthFirstScavengeOrder", |
tonyp@2061 | 240 | JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
ysr@2243 | 241 | { "HandlePromotionFailure", |
ysr@2243 | 242 | JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
ysr@2243 | 243 | { "MaxLiveObjectEvacuationRatio", |
ysr@2243 | 244 | JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
kamg@677 | 245 | { NULL, JDK_Version(0), JDK_Version(0) } |
kamg@677 | 246 | }; |
kamg@677 | 247 | |
kamg@677 | 248 | // Returns true if the flag is obsolete and fits into the range specified |
kamg@677 | 249 | // for being ignored. In the case that the flag is ignored, the 'version' |
kamg@677 | 250 | // value is filled in with the version number when the flag became |
kamg@677 | 251 | // obsolete so that that value can be displayed to the user. |
kamg@677 | 252 | bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { |
duke@435 | 253 | int i = 0; |
kamg@677 | 254 | assert(version != NULL, "Must provide a version buffer"); |
kamg@677 | 255 | while (obsolete_jvm_flags[i].name != NULL) { |
kamg@677 | 256 | const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; |
duke@435 | 257 | // <flag>=xxx form |
duke@435 | 258 | // [-|+]<flag> form |
kamg@677 | 259 | if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
duke@435 | 260 | ((s[0] == '+' || s[0] == '-') && |
kamg@677 | 261 | (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
kamg@677 | 262 | if (JDK_Version::current().compare(flag_status.accept_until) == -1) { |
kamg@677 | 263 | *version = flag_status.obsoleted_in; |
kamg@677 | 264 | return true; |
kamg@677 | 265 | } |
duke@435 | 266 | } |
duke@435 | 267 | i++; |
duke@435 | 268 | } |
duke@435 | 269 | return false; |
duke@435 | 270 | } |
duke@435 | 271 | |
duke@435 | 272 | // Constructs the system class path (aka boot class path) from the following |
duke@435 | 273 | // components, in order: |
duke@435 | 274 | // |
duke@435 | 275 | // prefix // from -Xbootclasspath/p:... |
duke@435 | 276 | // endorsed // the expansion of -Djava.endorsed.dirs=... |
duke@435 | 277 | // base // from os::get_system_properties() or -Xbootclasspath= |
duke@435 | 278 | // suffix // from -Xbootclasspath/a:... |
duke@435 | 279 | // |
duke@435 | 280 | // java.endorsed.dirs is a list of directories; any jar or zip files in the |
duke@435 | 281 | // directories are added to the sysclasspath just before the base. |
duke@435 | 282 | // |
duke@435 | 283 | // This could be AllStatic, but it isn't needed after argument processing is |
duke@435 | 284 | // complete. |
duke@435 | 285 | class SysClassPath: public StackObj { |
duke@435 | 286 | public: |
duke@435 | 287 | SysClassPath(const char* base); |
duke@435 | 288 | ~SysClassPath(); |
duke@435 | 289 | |
duke@435 | 290 | inline void set_base(const char* base); |
duke@435 | 291 | inline void add_prefix(const char* prefix); |
phh@966 | 292 | inline void add_suffix_to_prefix(const char* suffix); |
duke@435 | 293 | inline void add_suffix(const char* suffix); |
duke@435 | 294 | inline void reset_path(const char* base); |
duke@435 | 295 | |
duke@435 | 296 | // Expand the jar/zip files in each directory listed by the java.endorsed.dirs |
duke@435 | 297 | // property. Must be called after all command-line arguments have been |
duke@435 | 298 | // processed (in particular, -Djava.endorsed.dirs=...) and before calling |
duke@435 | 299 | // combined_path(). |
duke@435 | 300 | void expand_endorsed(); |
duke@435 | 301 | |
duke@435 | 302 | inline const char* get_base() const { return _items[_scp_base]; } |
duke@435 | 303 | inline const char* get_prefix() const { return _items[_scp_prefix]; } |
duke@435 | 304 | inline const char* get_suffix() const { return _items[_scp_suffix]; } |
duke@435 | 305 | inline const char* get_endorsed() const { return _items[_scp_endorsed]; } |
duke@435 | 306 | |
duke@435 | 307 | // Combine all the components into a single c-heap-allocated string; caller |
duke@435 | 308 | // must free the string if/when no longer needed. |
duke@435 | 309 | char* combined_path(); |
duke@435 | 310 | |
duke@435 | 311 | private: |
duke@435 | 312 | // Utility routines. |
duke@435 | 313 | static char* add_to_path(const char* path, const char* str, bool prepend); |
duke@435 | 314 | static char* add_jars_to_path(char* path, const char* directory); |
duke@435 | 315 | |
duke@435 | 316 | inline void reset_item_at(int index); |
duke@435 | 317 | |
duke@435 | 318 | // Array indices for the items that make up the sysclasspath. All except the |
duke@435 | 319 | // base are allocated in the C heap and freed by this class. |
duke@435 | 320 | enum { |
duke@435 | 321 | _scp_prefix, // from -Xbootclasspath/p:... |
duke@435 | 322 | _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... |
duke@435 | 323 | _scp_base, // the default sysclasspath |
duke@435 | 324 | _scp_suffix, // from -Xbootclasspath/a:... |
duke@435 | 325 | _scp_nitems // the number of items, must be last. |
duke@435 | 326 | }; |
duke@435 | 327 | |
duke@435 | 328 | const char* _items[_scp_nitems]; |
duke@435 | 329 | DEBUG_ONLY(bool _expansion_done;) |
duke@435 | 330 | }; |
duke@435 | 331 | |
duke@435 | 332 | SysClassPath::SysClassPath(const char* base) { |
duke@435 | 333 | memset(_items, 0, sizeof(_items)); |
duke@435 | 334 | _items[_scp_base] = base; |
duke@435 | 335 | DEBUG_ONLY(_expansion_done = false;) |
duke@435 | 336 | } |
duke@435 | 337 | |
duke@435 | 338 | SysClassPath::~SysClassPath() { |
duke@435 | 339 | // Free everything except the base. |
duke@435 | 340 | for (int i = 0; i < _scp_nitems; ++i) { |
duke@435 | 341 | if (i != _scp_base) reset_item_at(i); |
duke@435 | 342 | } |
duke@435 | 343 | DEBUG_ONLY(_expansion_done = false;) |
duke@435 | 344 | } |
duke@435 | 345 | |
duke@435 | 346 | inline void SysClassPath::set_base(const char* base) { |
duke@435 | 347 | _items[_scp_base] = base; |
duke@435 | 348 | } |
duke@435 | 349 | |
duke@435 | 350 | inline void SysClassPath::add_prefix(const char* prefix) { |
duke@435 | 351 | _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); |
duke@435 | 352 | } |
duke@435 | 353 | |
phh@966 | 354 | inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
phh@966 | 355 | _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
phh@966 | 356 | } |
phh@966 | 357 | |
duke@435 | 358 | inline void SysClassPath::add_suffix(const char* suffix) { |
duke@435 | 359 | _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); |
duke@435 | 360 | } |
duke@435 | 361 | |
duke@435 | 362 | inline void SysClassPath::reset_item_at(int index) { |
duke@435 | 363 | assert(index < _scp_nitems && index != _scp_base, "just checking"); |
duke@435 | 364 | if (_items[index] != NULL) { |
duke@435 | 365 | FREE_C_HEAP_ARRAY(char, _items[index]); |
duke@435 | 366 | _items[index] = NULL; |
duke@435 | 367 | } |
duke@435 | 368 | } |
duke@435 | 369 | |
duke@435 | 370 | inline void SysClassPath::reset_path(const char* base) { |
duke@435 | 371 | // Clear the prefix and suffix. |
duke@435 | 372 | reset_item_at(_scp_prefix); |
duke@435 | 373 | reset_item_at(_scp_suffix); |
duke@435 | 374 | set_base(base); |
duke@435 | 375 | } |
duke@435 | 376 | |
duke@435 | 377 | //------------------------------------------------------------------------------ |
duke@435 | 378 | |
duke@435 | 379 | void SysClassPath::expand_endorsed() { |
duke@435 | 380 | assert(_items[_scp_endorsed] == NULL, "can only be called once."); |
duke@435 | 381 | |
duke@435 | 382 | const char* path = Arguments::get_property("java.endorsed.dirs"); |
duke@435 | 383 | if (path == NULL) { |
duke@435 | 384 | path = Arguments::get_endorsed_dir(); |
duke@435 | 385 | assert(path != NULL, "no default for java.endorsed.dirs"); |
duke@435 | 386 | } |
duke@435 | 387 | |
duke@435 | 388 | char* expanded_path = NULL; |
duke@435 | 389 | const char separator = *os::path_separator(); |
duke@435 | 390 | const char* const end = path + strlen(path); |
duke@435 | 391 | while (path < end) { |
duke@435 | 392 | const char* tmp_end = strchr(path, separator); |
duke@435 | 393 | if (tmp_end == NULL) { |
duke@435 | 394 | expanded_path = add_jars_to_path(expanded_path, path); |
duke@435 | 395 | path = end; |
duke@435 | 396 | } else { |
duke@435 | 397 | char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); |
duke@435 | 398 | memcpy(dirpath, path, tmp_end - path); |
duke@435 | 399 | dirpath[tmp_end - path] = '\0'; |
duke@435 | 400 | expanded_path = add_jars_to_path(expanded_path, dirpath); |
duke@435 | 401 | FREE_C_HEAP_ARRAY(char, dirpath); |
duke@435 | 402 | path = tmp_end + 1; |
duke@435 | 403 | } |
duke@435 | 404 | } |
duke@435 | 405 | _items[_scp_endorsed] = expanded_path; |
duke@435 | 406 | DEBUG_ONLY(_expansion_done = true;) |
duke@435 | 407 | } |
duke@435 | 408 | |
duke@435 | 409 | // Combine the bootclasspath elements, some of which may be null, into a single |
duke@435 | 410 | // c-heap-allocated string. |
duke@435 | 411 | char* SysClassPath::combined_path() { |
duke@435 | 412 | assert(_items[_scp_base] != NULL, "empty default sysclasspath"); |
duke@435 | 413 | assert(_expansion_done, "must call expand_endorsed() first."); |
duke@435 | 414 | |
duke@435 | 415 | size_t lengths[_scp_nitems]; |
duke@435 | 416 | size_t total_len = 0; |
duke@435 | 417 | |
duke@435 | 418 | const char separator = *os::path_separator(); |
duke@435 | 419 | |
duke@435 | 420 | // Get the lengths. |
duke@435 | 421 | int i; |
duke@435 | 422 | for (i = 0; i < _scp_nitems; ++i) { |
duke@435 | 423 | if (_items[i] != NULL) { |
duke@435 | 424 | lengths[i] = strlen(_items[i]); |
duke@435 | 425 | // Include space for the separator char (or a NULL for the last item). |
duke@435 | 426 | total_len += lengths[i] + 1; |
duke@435 | 427 | } |
duke@435 | 428 | } |
duke@435 | 429 | assert(total_len > 0, "empty sysclasspath not allowed"); |
duke@435 | 430 | |
duke@435 | 431 | // Copy the _items to a single string. |
duke@435 | 432 | char* cp = NEW_C_HEAP_ARRAY(char, total_len); |
duke@435 | 433 | char* cp_tmp = cp; |
duke@435 | 434 | for (i = 0; i < _scp_nitems; ++i) { |
duke@435 | 435 | if (_items[i] != NULL) { |
duke@435 | 436 | memcpy(cp_tmp, _items[i], lengths[i]); |
duke@435 | 437 | cp_tmp += lengths[i]; |
duke@435 | 438 | *cp_tmp++ = separator; |
duke@435 | 439 | } |
duke@435 | 440 | } |
duke@435 | 441 | *--cp_tmp = '\0'; // Replace the extra separator. |
duke@435 | 442 | return cp; |
duke@435 | 443 | } |
duke@435 | 444 | |
duke@435 | 445 | // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. |
duke@435 | 446 | char* |
duke@435 | 447 | SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { |
duke@435 | 448 | char *cp; |
duke@435 | 449 | |
duke@435 | 450 | assert(str != NULL, "just checking"); |
duke@435 | 451 | if (path == NULL) { |
duke@435 | 452 | size_t len = strlen(str) + 1; |
duke@435 | 453 | cp = NEW_C_HEAP_ARRAY(char, len); |
duke@435 | 454 | memcpy(cp, str, len); // copy the trailing null |
duke@435 | 455 | } else { |
duke@435 | 456 | const char separator = *os::path_separator(); |
duke@435 | 457 | size_t old_len = strlen(path); |
duke@435 | 458 | size_t str_len = strlen(str); |
duke@435 | 459 | size_t len = old_len + str_len + 2; |
duke@435 | 460 | |
duke@435 | 461 | if (prepend) { |
duke@435 | 462 | cp = NEW_C_HEAP_ARRAY(char, len); |
duke@435 | 463 | char* cp_tmp = cp; |
duke@435 | 464 | memcpy(cp_tmp, str, str_len); |
duke@435 | 465 | cp_tmp += str_len; |
duke@435 | 466 | *cp_tmp = separator; |
duke@435 | 467 | memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null |
duke@435 | 468 | FREE_C_HEAP_ARRAY(char, path); |
duke@435 | 469 | } else { |
duke@435 | 470 | cp = REALLOC_C_HEAP_ARRAY(char, path, len); |
duke@435 | 471 | char* cp_tmp = cp + old_len; |
duke@435 | 472 | *cp_tmp = separator; |
duke@435 | 473 | memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null |
duke@435 | 474 | } |
duke@435 | 475 | } |
duke@435 | 476 | return cp; |
duke@435 | 477 | } |
duke@435 | 478 | |
duke@435 | 479 | // Scan the directory and append any jar or zip files found to path. |
duke@435 | 480 | // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. |
duke@435 | 481 | char* SysClassPath::add_jars_to_path(char* path, const char* directory) { |
duke@435 | 482 | DIR* dir = os::opendir(directory); |
duke@435 | 483 | if (dir == NULL) return path; |
duke@435 | 484 | |
duke@435 | 485 | char dir_sep[2] = { '\0', '\0' }; |
duke@435 | 486 | size_t directory_len = strlen(directory); |
duke@435 | 487 | const char fileSep = *os::file_separator(); |
duke@435 | 488 | if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; |
duke@435 | 489 | |
duke@435 | 490 | /* Scan the directory for jars/zips, appending them to path. */ |
duke@435 | 491 | struct dirent *entry; |
duke@435 | 492 | char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); |
duke@435 | 493 | while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
duke@435 | 494 | const char* name = entry->d_name; |
duke@435 | 495 | const char* ext = name + strlen(name) - 4; |
duke@435 | 496 | bool isJarOrZip = ext > name && |
duke@435 | 497 | (os::file_name_strcmp(ext, ".jar") == 0 || |
duke@435 | 498 | os::file_name_strcmp(ext, ".zip") == 0); |
duke@435 | 499 | if (isJarOrZip) { |
duke@435 | 500 | char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); |
duke@435 | 501 | sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
duke@435 | 502 | path = add_to_path(path, jarpath, false); |
duke@435 | 503 | FREE_C_HEAP_ARRAY(char, jarpath); |
duke@435 | 504 | } |
duke@435 | 505 | } |
duke@435 | 506 | FREE_C_HEAP_ARRAY(char, dbuf); |
duke@435 | 507 | os::closedir(dir); |
duke@435 | 508 | return path; |
duke@435 | 509 | } |
duke@435 | 510 | |
duke@435 | 511 | // Parses a memory size specification string. |
swamyv@924 | 512 | static bool atomull(const char *s, julong* result) { |
swamyv@924 | 513 | julong n = 0; |
swamyv@924 | 514 | int args_read = sscanf(s, os::julong_format_specifier(), &n); |
duke@435 | 515 | if (args_read != 1) { |
duke@435 | 516 | return false; |
duke@435 | 517 | } |
duke@435 | 518 | while (*s != '\0' && isdigit(*s)) { |
duke@435 | 519 | s++; |
duke@435 | 520 | } |
duke@435 | 521 | // 4705540: illegal if more characters are found after the first non-digit |
duke@435 | 522 | if (strlen(s) > 1) { |
duke@435 | 523 | return false; |
duke@435 | 524 | } |
duke@435 | 525 | switch (*s) { |
duke@435 | 526 | case 'T': case 't': |
duke@435 | 527 | *result = n * G * K; |
swamyv@924 | 528 | // Check for overflow. |
swamyv@924 | 529 | if (*result/((julong)G * K) != n) return false; |
duke@435 | 530 | return true; |
duke@435 | 531 | case 'G': case 'g': |
duke@435 | 532 | *result = n * G; |
swamyv@924 | 533 | if (*result/G != n) return false; |
duke@435 | 534 | return true; |
duke@435 | 535 | case 'M': case 'm': |
duke@435 | 536 | *result = n * M; |
swamyv@924 | 537 | if (*result/M != n) return false; |
duke@435 | 538 | return true; |
duke@435 | 539 | case 'K': case 'k': |
duke@435 | 540 | *result = n * K; |
swamyv@924 | 541 | if (*result/K != n) return false; |
duke@435 | 542 | return true; |
duke@435 | 543 | case '\0': |
duke@435 | 544 | *result = n; |
duke@435 | 545 | return true; |
duke@435 | 546 | default: |
duke@435 | 547 | return false; |
duke@435 | 548 | } |
duke@435 | 549 | } |
duke@435 | 550 | |
swamyv@924 | 551 | Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
duke@435 | 552 | if (size < min_size) return arg_too_small; |
duke@435 | 553 | // Check that size will fit in a size_t (only relevant on 32-bit) |
swamyv@924 | 554 | if (size > max_uintx) return arg_too_big; |
duke@435 | 555 | return arg_in_range; |
duke@435 | 556 | } |
duke@435 | 557 | |
duke@435 | 558 | // Describe an argument out of range error |
duke@435 | 559 | void Arguments::describe_range_error(ArgsRange errcode) { |
duke@435 | 560 | switch(errcode) { |
duke@435 | 561 | case arg_too_big: |
duke@435 | 562 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 563 | "The specified size exceeds the maximum " |
duke@435 | 564 | "representable size.\n"); |
duke@435 | 565 | break; |
duke@435 | 566 | case arg_too_small: |
duke@435 | 567 | case arg_unreadable: |
duke@435 | 568 | case arg_in_range: |
duke@435 | 569 | // do nothing for now |
duke@435 | 570 | break; |
duke@435 | 571 | default: |
duke@435 | 572 | ShouldNotReachHere(); |
duke@435 | 573 | } |
duke@435 | 574 | } |
duke@435 | 575 | |
duke@435 | 576 | static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { |
duke@435 | 577 | return CommandLineFlags::boolAtPut(name, &value, origin); |
duke@435 | 578 | } |
duke@435 | 579 | |
duke@435 | 580 | static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { |
duke@435 | 581 | double v; |
duke@435 | 582 | if (sscanf(value, "%lf", &v) != 1) { |
duke@435 | 583 | return false; |
duke@435 | 584 | } |
duke@435 | 585 | |
duke@435 | 586 | if (CommandLineFlags::doubleAtPut(name, &v, origin)) { |
duke@435 | 587 | return true; |
duke@435 | 588 | } |
duke@435 | 589 | return false; |
duke@435 | 590 | } |
duke@435 | 591 | |
duke@435 | 592 | static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { |
swamyv@924 | 593 | julong v; |
duke@435 | 594 | intx intx_v; |
duke@435 | 595 | bool is_neg = false; |
swamyv@924 | 596 | // Check the sign first since atomull() parses only unsigned values. |
duke@435 | 597 | if (*value == '-') { |
duke@435 | 598 | if (!CommandLineFlags::intxAt(name, &intx_v)) { |
duke@435 | 599 | return false; |
duke@435 | 600 | } |
duke@435 | 601 | value++; |
duke@435 | 602 | is_neg = true; |
duke@435 | 603 | } |
swamyv@924 | 604 | if (!atomull(value, &v)) { |
duke@435 | 605 | return false; |
duke@435 | 606 | } |
duke@435 | 607 | intx_v = (intx) v; |
duke@435 | 608 | if (is_neg) { |
duke@435 | 609 | intx_v = -intx_v; |
duke@435 | 610 | } |
duke@435 | 611 | if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { |
duke@435 | 612 | return true; |
duke@435 | 613 | } |
duke@435 | 614 | uintx uintx_v = (uintx) v; |
duke@435 | 615 | if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { |
duke@435 | 616 | return true; |
duke@435 | 617 | } |
phh@1499 | 618 | uint64_t uint64_t_v = (uint64_t) v; |
phh@1499 | 619 | if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { |
phh@1499 | 620 | return true; |
phh@1499 | 621 | } |
duke@435 | 622 | return false; |
duke@435 | 623 | } |
duke@435 | 624 | |
duke@435 | 625 | static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { |
duke@435 | 626 | if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; |
duke@435 | 627 | // Contract: CommandLineFlags always returns a pointer that needs freeing. |
duke@435 | 628 | FREE_C_HEAP_ARRAY(char, value); |
duke@435 | 629 | return true; |
duke@435 | 630 | } |
duke@435 | 631 | |
duke@435 | 632 | static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { |
duke@435 | 633 | const char* old_value = ""; |
duke@435 | 634 | if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; |
duke@435 | 635 | size_t old_len = old_value != NULL ? strlen(old_value) : 0; |
duke@435 | 636 | size_t new_len = strlen(new_value); |
duke@435 | 637 | const char* value; |
duke@435 | 638 | char* free_this_too = NULL; |
duke@435 | 639 | if (old_len == 0) { |
duke@435 | 640 | value = new_value; |
duke@435 | 641 | } else if (new_len == 0) { |
duke@435 | 642 | value = old_value; |
duke@435 | 643 | } else { |
duke@435 | 644 | char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); |
duke@435 | 645 | // each new setting adds another LINE to the switch: |
duke@435 | 646 | sprintf(buf, "%s\n%s", old_value, new_value); |
duke@435 | 647 | value = buf; |
duke@435 | 648 | free_this_too = buf; |
duke@435 | 649 | } |
duke@435 | 650 | (void) CommandLineFlags::ccstrAtPut(name, &value, origin); |
duke@435 | 651 | // CommandLineFlags always returns a pointer that needs freeing. |
duke@435 | 652 | FREE_C_HEAP_ARRAY(char, value); |
duke@435 | 653 | if (free_this_too != NULL) { |
duke@435 | 654 | // CommandLineFlags made its own copy, so I must delete my own temp. buffer. |
duke@435 | 655 | FREE_C_HEAP_ARRAY(char, free_this_too); |
duke@435 | 656 | } |
duke@435 | 657 | return true; |
duke@435 | 658 | } |
duke@435 | 659 | |
duke@435 | 660 | bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { |
duke@435 | 661 | |
duke@435 | 662 | // range of acceptable characters spelled out for portability reasons |
duke@435 | 663 | #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" |
duke@435 | 664 | #define BUFLEN 255 |
duke@435 | 665 | char name[BUFLEN+1]; |
duke@435 | 666 | char dummy; |
duke@435 | 667 | |
duke@435 | 668 | if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { |
duke@435 | 669 | return set_bool_flag(name, false, origin); |
duke@435 | 670 | } |
duke@435 | 671 | if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { |
duke@435 | 672 | return set_bool_flag(name, true, origin); |
duke@435 | 673 | } |
duke@435 | 674 | |
duke@435 | 675 | char punct; |
duke@435 | 676 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { |
duke@435 | 677 | const char* value = strchr(arg, '=') + 1; |
duke@435 | 678 | Flag* flag = Flag::find_flag(name, strlen(name)); |
duke@435 | 679 | if (flag != NULL && flag->is_ccstr()) { |
duke@435 | 680 | if (flag->ccstr_accumulates()) { |
duke@435 | 681 | return append_to_string_flag(name, value, origin); |
duke@435 | 682 | } else { |
duke@435 | 683 | if (value[0] == '\0') { |
duke@435 | 684 | value = NULL; |
duke@435 | 685 | } |
duke@435 | 686 | return set_string_flag(name, value, origin); |
duke@435 | 687 | } |
duke@435 | 688 | } |
duke@435 | 689 | } |
duke@435 | 690 | |
duke@435 | 691 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { |
duke@435 | 692 | const char* value = strchr(arg, '=') + 1; |
duke@435 | 693 | // -XX:Foo:=xxx will reset the string flag to the given value. |
duke@435 | 694 | if (value[0] == '\0') { |
duke@435 | 695 | value = NULL; |
duke@435 | 696 | } |
duke@435 | 697 | return set_string_flag(name, value, origin); |
duke@435 | 698 | } |
duke@435 | 699 | |
duke@435 | 700 | #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" |
duke@435 | 701 | #define SIGNED_NUMBER_RANGE "[-0123456789]" |
duke@435 | 702 | #define NUMBER_RANGE "[0123456789]" |
duke@435 | 703 | char value[BUFLEN + 1]; |
duke@435 | 704 | char value2[BUFLEN + 1]; |
duke@435 | 705 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { |
duke@435 | 706 | // Looks like a floating-point number -- try again with more lenient format string |
duke@435 | 707 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { |
duke@435 | 708 | return set_fp_numeric_flag(name, value, origin); |
duke@435 | 709 | } |
duke@435 | 710 | } |
duke@435 | 711 | |
duke@435 | 712 | #define VALUE_RANGE "[-kmgtKMGT0123456789]" |
duke@435 | 713 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { |
duke@435 | 714 | return set_numeric_flag(name, value, origin); |
duke@435 | 715 | } |
duke@435 | 716 | |
duke@435 | 717 | return false; |
duke@435 | 718 | } |
duke@435 | 719 | |
duke@435 | 720 | void Arguments::add_string(char*** bldarray, int* count, const char* arg) { |
duke@435 | 721 | assert(bldarray != NULL, "illegal argument"); |
duke@435 | 722 | |
duke@435 | 723 | if (arg == NULL) { |
duke@435 | 724 | return; |
duke@435 | 725 | } |
duke@435 | 726 | |
duke@435 | 727 | int index = *count; |
duke@435 | 728 | |
duke@435 | 729 | // expand the array and add arg to the last element |
duke@435 | 730 | (*count)++; |
duke@435 | 731 | if (*bldarray == NULL) { |
duke@435 | 732 | *bldarray = NEW_C_HEAP_ARRAY(char*, *count); |
duke@435 | 733 | } else { |
duke@435 | 734 | *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); |
duke@435 | 735 | } |
duke@435 | 736 | (*bldarray)[index] = strdup(arg); |
duke@435 | 737 | } |
duke@435 | 738 | |
duke@435 | 739 | void Arguments::build_jvm_args(const char* arg) { |
duke@435 | 740 | add_string(&_jvm_args_array, &_num_jvm_args, arg); |
duke@435 | 741 | } |
duke@435 | 742 | |
duke@435 | 743 | void Arguments::build_jvm_flags(const char* arg) { |
duke@435 | 744 | add_string(&_jvm_flags_array, &_num_jvm_flags, arg); |
duke@435 | 745 | } |
duke@435 | 746 | |
duke@435 | 747 | // utility function to return a string that concatenates all |
duke@435 | 748 | // strings in a given char** array |
duke@435 | 749 | const char* Arguments::build_resource_string(char** args, int count) { |
duke@435 | 750 | if (args == NULL || count == 0) { |
duke@435 | 751 | return NULL; |
duke@435 | 752 | } |
duke@435 | 753 | size_t length = strlen(args[0]) + 1; // add 1 for the null terminator |
duke@435 | 754 | for (int i = 1; i < count; i++) { |
duke@435 | 755 | length += strlen(args[i]) + 1; // add 1 for a space |
duke@435 | 756 | } |
duke@435 | 757 | char* s = NEW_RESOURCE_ARRAY(char, length); |
duke@435 | 758 | strcpy(s, args[0]); |
duke@435 | 759 | for (int j = 1; j < count; j++) { |
duke@435 | 760 | strcat(s, " "); |
duke@435 | 761 | strcat(s, args[j]); |
duke@435 | 762 | } |
duke@435 | 763 | return (const char*) s; |
duke@435 | 764 | } |
duke@435 | 765 | |
duke@435 | 766 | void Arguments::print_on(outputStream* st) { |
duke@435 | 767 | st->print_cr("VM Arguments:"); |
duke@435 | 768 | if (num_jvm_flags() > 0) { |
duke@435 | 769 | st->print("jvm_flags: "); print_jvm_flags_on(st); |
duke@435 | 770 | } |
duke@435 | 771 | if (num_jvm_args() > 0) { |
duke@435 | 772 | st->print("jvm_args: "); print_jvm_args_on(st); |
duke@435 | 773 | } |
duke@435 | 774 | st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); |
duke@435 | 775 | st->print_cr("Launcher Type: %s", _sun_java_launcher); |
duke@435 | 776 | } |
duke@435 | 777 | |
duke@435 | 778 | void Arguments::print_jvm_flags_on(outputStream* st) { |
duke@435 | 779 | if (_num_jvm_flags > 0) { |
duke@435 | 780 | for (int i=0; i < _num_jvm_flags; i++) { |
duke@435 | 781 | st->print("%s ", _jvm_flags_array[i]); |
duke@435 | 782 | } |
duke@435 | 783 | st->print_cr(""); |
duke@435 | 784 | } |
duke@435 | 785 | } |
duke@435 | 786 | |
duke@435 | 787 | void Arguments::print_jvm_args_on(outputStream* st) { |
duke@435 | 788 | if (_num_jvm_args > 0) { |
duke@435 | 789 | for (int i=0; i < _num_jvm_args; i++) { |
duke@435 | 790 | st->print("%s ", _jvm_args_array[i]); |
duke@435 | 791 | } |
duke@435 | 792 | st->print_cr(""); |
duke@435 | 793 | } |
duke@435 | 794 | } |
duke@435 | 795 | |
kamg@677 | 796 | bool Arguments::process_argument(const char* arg, |
kamg@677 | 797 | jboolean ignore_unrecognized, FlagValueOrigin origin) { |
kamg@677 | 798 | |
kamg@677 | 799 | JDK_Version since = JDK_Version(); |
duke@435 | 800 | |
duke@435 | 801 | if (parse_argument(arg, origin)) { |
duke@435 | 802 | // do nothing |
kamg@677 | 803 | } else if (is_newly_obsolete(arg, &since)) { |
kamg@677 | 804 | enum { bufsize = 256 }; |
kamg@677 | 805 | char buffer[bufsize]; |
kamg@677 | 806 | since.to_string(buffer, bufsize); |
duke@435 | 807 | jio_fprintf(defaultStream::error_stream(), |
kamg@677 | 808 | "Warning: The flag %s has been EOL'd as of %s and will" |
kamg@677 | 809 | " be ignored\n", arg, buffer); |
duke@435 | 810 | } else { |
duke@435 | 811 | if (!ignore_unrecognized) { |
duke@435 | 812 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 813 | "Unrecognized VM option '%s'\n", arg); |
duke@435 | 814 | // allow for commandline "commenting out" options like -XX:#+Verbose |
duke@435 | 815 | if (strlen(arg) == 0 || arg[0] != '#') { |
duke@435 | 816 | return false; |
duke@435 | 817 | } |
duke@435 | 818 | } |
duke@435 | 819 | } |
duke@435 | 820 | return true; |
duke@435 | 821 | } |
duke@435 | 822 | |
duke@435 | 823 | bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { |
duke@435 | 824 | FILE* stream = fopen(file_name, "rb"); |
duke@435 | 825 | if (stream == NULL) { |
duke@435 | 826 | if (should_exist) { |
duke@435 | 827 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 828 | "Could not open settings file %s\n", file_name); |
duke@435 | 829 | return false; |
duke@435 | 830 | } else { |
duke@435 | 831 | return true; |
duke@435 | 832 | } |
duke@435 | 833 | } |
duke@435 | 834 | |
duke@435 | 835 | char token[1024]; |
duke@435 | 836 | int pos = 0; |
duke@435 | 837 | |
duke@435 | 838 | bool in_white_space = true; |
duke@435 | 839 | bool in_comment = false; |
duke@435 | 840 | bool in_quote = false; |
duke@435 | 841 | char quote_c = 0; |
duke@435 | 842 | bool result = true; |
duke@435 | 843 | |
duke@435 | 844 | int c = getc(stream); |
duke@435 | 845 | while(c != EOF) { |
duke@435 | 846 | if (in_white_space) { |
duke@435 | 847 | if (in_comment) { |
duke@435 | 848 | if (c == '\n') in_comment = false; |
duke@435 | 849 | } else { |
duke@435 | 850 | if (c == '#') in_comment = true; |
duke@435 | 851 | else if (!isspace(c)) { |
duke@435 | 852 | in_white_space = false; |
duke@435 | 853 | token[pos++] = c; |
duke@435 | 854 | } |
duke@435 | 855 | } |
duke@435 | 856 | } else { |
duke@435 | 857 | if (c == '\n' || (!in_quote && isspace(c))) { |
duke@435 | 858 | // token ends at newline, or at unquoted whitespace |
duke@435 | 859 | // this allows a way to include spaces in string-valued options |
duke@435 | 860 | token[pos] = '\0'; |
duke@435 | 861 | logOption(token); |
duke@435 | 862 | result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); |
duke@435 | 863 | build_jvm_flags(token); |
duke@435 | 864 | pos = 0; |
duke@435 | 865 | in_white_space = true; |
duke@435 | 866 | in_quote = false; |
duke@435 | 867 | } else if (!in_quote && (c == '\'' || c == '"')) { |
duke@435 | 868 | in_quote = true; |
duke@435 | 869 | quote_c = c; |
duke@435 | 870 | } else if (in_quote && (c == quote_c)) { |
duke@435 | 871 | in_quote = false; |
duke@435 | 872 | } else { |
duke@435 | 873 | token[pos++] = c; |
duke@435 | 874 | } |
duke@435 | 875 | } |
duke@435 | 876 | c = getc(stream); |
duke@435 | 877 | } |
duke@435 | 878 | if (pos > 0) { |
duke@435 | 879 | token[pos] = '\0'; |
duke@435 | 880 | result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); |
duke@435 | 881 | build_jvm_flags(token); |
duke@435 | 882 | } |
duke@435 | 883 | fclose(stream); |
duke@435 | 884 | return result; |
duke@435 | 885 | } |
duke@435 | 886 | |
duke@435 | 887 | //============================================================================================================= |
duke@435 | 888 | // Parsing of properties (-D) |
duke@435 | 889 | |
duke@435 | 890 | const char* Arguments::get_property(const char* key) { |
duke@435 | 891 | return PropertyList_get_value(system_properties(), key); |
duke@435 | 892 | } |
duke@435 | 893 | |
duke@435 | 894 | bool Arguments::add_property(const char* prop) { |
duke@435 | 895 | const char* eq = strchr(prop, '='); |
duke@435 | 896 | char* key; |
duke@435 | 897 | // ns must be static--its address may be stored in a SystemProperty object. |
duke@435 | 898 | const static char ns[1] = {0}; |
duke@435 | 899 | char* value = (char *)ns; |
duke@435 | 900 | |
duke@435 | 901 | size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); |
duke@435 | 902 | key = AllocateHeap(key_len + 1, "add_property"); |
duke@435 | 903 | strncpy(key, prop, key_len); |
duke@435 | 904 | key[key_len] = '\0'; |
duke@435 | 905 | |
duke@435 | 906 | if (eq != NULL) { |
duke@435 | 907 | size_t value_len = strlen(prop) - key_len - 1; |
duke@435 | 908 | value = AllocateHeap(value_len + 1, "add_property"); |
duke@435 | 909 | strncpy(value, &prop[key_len + 1], value_len + 1); |
duke@435 | 910 | } |
duke@435 | 911 | |
duke@435 | 912 | if (strcmp(key, "java.compiler") == 0) { |
duke@435 | 913 | process_java_compiler_argument(value); |
duke@435 | 914 | FreeHeap(key); |
duke@435 | 915 | if (eq != NULL) { |
duke@435 | 916 | FreeHeap(value); |
duke@435 | 917 | } |
duke@435 | 918 | return true; |
phh@1126 | 919 | } else if (strcmp(key, "sun.java.command") == 0) { |
duke@435 | 920 | _java_command = value; |
duke@435 | 921 | |
kevinw@2449 | 922 | // Record value in Arguments, but let it get passed to Java. |
phh@1126 | 923 | } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
duke@435 | 924 | // launcher.pid property is private and is processed |
duke@435 | 925 | // in process_sun_java_launcher_properties(); |
duke@435 | 926 | // the sun.java.launcher property is passed on to the java application |
duke@435 | 927 | FreeHeap(key); |
duke@435 | 928 | if (eq != NULL) { |
duke@435 | 929 | FreeHeap(value); |
duke@435 | 930 | } |
duke@435 | 931 | return true; |
phh@1126 | 932 | } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
duke@435 | 933 | // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
duke@435 | 934 | // its value without going through the property list or making a Java call. |
duke@435 | 935 | _java_vendor_url_bug = value; |
phh@1126 | 936 | } else if (strcmp(key, "sun.boot.library.path") == 0) { |
phh@1126 | 937 | PropertyList_unique_add(&_system_properties, key, value, true); |
phh@1126 | 938 | return true; |
duke@435 | 939 | } |
duke@435 | 940 | // Create new property and add at the end of the list |
duke@435 | 941 | PropertyList_unique_add(&_system_properties, key, value); |
duke@435 | 942 | return true; |
duke@435 | 943 | } |
duke@435 | 944 | |
duke@435 | 945 | //=========================================================================================================== |
duke@435 | 946 | // Setting int/mixed/comp mode flags |
duke@435 | 947 | |
duke@435 | 948 | void Arguments::set_mode_flags(Mode mode) { |
duke@435 | 949 | // Set up default values for all flags. |
duke@435 | 950 | // If you add a flag to any of the branches below, |
duke@435 | 951 | // add a default value for it here. |
duke@435 | 952 | set_java_compiler(false); |
duke@435 | 953 | _mode = mode; |
duke@435 | 954 | |
duke@435 | 955 | // Ensure Agent_OnLoad has the correct initial values. |
duke@435 | 956 | // This may not be the final mode; mode may change later in onload phase. |
duke@435 | 957 | PropertyList_unique_add(&_system_properties, "java.vm.info", |
phh@1126 | 958 | (char*)Abstract_VM_Version::vm_info_string(), false); |
duke@435 | 959 | |
duke@435 | 960 | UseInterpreter = true; |
duke@435 | 961 | UseCompiler = true; |
duke@435 | 962 | UseLoopCounter = true; |
duke@435 | 963 | |
duke@435 | 964 | // Default values may be platform/compiler dependent - |
duke@435 | 965 | // use the saved values |
duke@435 | 966 | ClipInlining = Arguments::_ClipInlining; |
duke@435 | 967 | AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; |
duke@435 | 968 | UseOnStackReplacement = Arguments::_UseOnStackReplacement; |
duke@435 | 969 | BackgroundCompilation = Arguments::_BackgroundCompilation; |
duke@435 | 970 | |
duke@435 | 971 | // Change from defaults based on mode |
duke@435 | 972 | switch (mode) { |
duke@435 | 973 | default: |
duke@435 | 974 | ShouldNotReachHere(); |
duke@435 | 975 | break; |
duke@435 | 976 | case _int: |
duke@435 | 977 | UseCompiler = false; |
duke@435 | 978 | UseLoopCounter = false; |
duke@435 | 979 | AlwaysCompileLoopMethods = false; |
duke@435 | 980 | UseOnStackReplacement = false; |
duke@435 | 981 | break; |
duke@435 | 982 | case _mixed: |
duke@435 | 983 | // same as default |
duke@435 | 984 | break; |
duke@435 | 985 | case _comp: |
duke@435 | 986 | UseInterpreter = false; |
duke@435 | 987 | BackgroundCompilation = false; |
duke@435 | 988 | ClipInlining = false; |
duke@435 | 989 | break; |
duke@435 | 990 | } |
duke@435 | 991 | } |
duke@435 | 992 | |
duke@435 | 993 | // Conflict: required to use shared spaces (-Xshare:on), but |
duke@435 | 994 | // incompatible command line options were chosen. |
duke@435 | 995 | |
duke@435 | 996 | static void no_shared_spaces() { |
duke@435 | 997 | if (RequireSharedSpaces) { |
duke@435 | 998 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 999 | "Class data sharing is inconsistent with other specified options.\n"); |
duke@435 | 1000 | vm_exit_during_initialization("Unable to use shared archive.", NULL); |
duke@435 | 1001 | } else { |
duke@435 | 1002 | FLAG_SET_DEFAULT(UseSharedSpaces, false); |
duke@435 | 1003 | } |
duke@435 | 1004 | } |
duke@435 | 1005 | |
iveresov@2246 | 1006 | void Arguments::check_compressed_oops_compat() { |
iveresov@2246 | 1007 | #ifdef _LP64 |
iveresov@2246 | 1008 | assert(UseCompressedOops, "Precondition"); |
iveresov@2246 | 1009 | // Is it on by default or set on ergonomically |
iveresov@2246 | 1010 | bool is_on_by_default = FLAG_IS_DEFAULT(UseCompressedOops) || FLAG_IS_ERGO(UseCompressedOops); |
iveresov@2246 | 1011 | |
iveresov@2246 | 1012 | // If dumping an archive or forcing its use, disable compressed oops if possible |
iveresov@2246 | 1013 | if (DumpSharedSpaces || RequireSharedSpaces) { |
iveresov@2246 | 1014 | if (is_on_by_default) { |
iveresov@2246 | 1015 | FLAG_SET_DEFAULT(UseCompressedOops, false); |
iveresov@2246 | 1016 | return; |
iveresov@2246 | 1017 | } else { |
iveresov@2246 | 1018 | vm_exit_during_initialization( |
iveresov@2246 | 1019 | "Class Data Sharing is not supported with compressed oops yet", NULL); |
iveresov@2246 | 1020 | } |
iveresov@2246 | 1021 | } else if (UseSharedSpaces) { |
iveresov@2246 | 1022 | // UseSharedSpaces is on by default. With compressed oops, we turn it off. |
iveresov@2246 | 1023 | FLAG_SET_DEFAULT(UseSharedSpaces, false); |
iveresov@2246 | 1024 | } |
iveresov@2344 | 1025 | #endif |
iveresov@2246 | 1026 | } |
iveresov@2246 | 1027 | |
iveresov@2138 | 1028 | void Arguments::set_tiered_flags() { |
iveresov@2138 | 1029 | if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
iveresov@2138 | 1030 | FLAG_SET_DEFAULT(CompilationPolicyChoice, 2); |
iveresov@2138 | 1031 | } |
iveresov@2138 | 1032 | if (CompilationPolicyChoice < 2) { |
iveresov@2138 | 1033 | vm_exit_during_initialization( |
iveresov@2138 | 1034 | "Incompatible compilation policy selected", NULL); |
iveresov@2138 | 1035 | } |
iveresov@2246 | 1036 | // Increase the code cache size - tiered compiles a lot more. |
iveresov@2138 | 1037 | if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
iveresov@2138 | 1038 | FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); |
iveresov@2138 | 1039 | } |
iveresov@2138 | 1040 | } |
iveresov@2138 | 1041 | |
ysr@1580 | 1042 | #ifndef KERNEL |
duke@435 | 1043 | // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
duke@435 | 1044 | // if it's not explictly set or unset. If the user has chosen |
duke@435 | 1045 | // UseParNewGC and not explicitly set ParallelGCThreads we |
duke@435 | 1046 | // set it, unless this is a single cpu machine. |
duke@435 | 1047 | void Arguments::set_parnew_gc_flags() { |
phh@1499 | 1048 | assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
ysr@777 | 1049 | "control point invariant"); |
ysr@777 | 1050 | assert(UseParNewGC, "Error"); |
duke@435 | 1051 | |
jmasa@445 | 1052 | // Turn off AdaptiveSizePolicy by default for parnew until it is |
jmasa@445 | 1053 | // complete. |
ysr@777 | 1054 | if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
jmasa@445 | 1055 | FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
jmasa@445 | 1056 | } |
jmasa@445 | 1057 | |
ysr@777 | 1058 | if (ParallelGCThreads == 0) { |
jmasa@445 | 1059 | FLAG_SET_DEFAULT(ParallelGCThreads, |
jmasa@445 | 1060 | Abstract_VM_Version::parallel_worker_threads()); |
phh@1499 | 1061 | if (ParallelGCThreads == 1) { |
duke@435 | 1062 | FLAG_SET_DEFAULT(UseParNewGC, false); |
phh@1499 | 1063 | FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
duke@435 | 1064 | } |
duke@435 | 1065 | } |
phh@1499 | 1066 | if (UseParNewGC) { |
phh@1499 | 1067 | // CDS doesn't work with ParNew yet |
duke@435 | 1068 | no_shared_spaces(); |
duke@435 | 1069 | |
ysr@1130 | 1070 | // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
duke@435 | 1071 | // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
duke@435 | 1072 | // we set them to 1024 and 1024. |
duke@435 | 1073 | // See CR 6362902. |
duke@435 | 1074 | if (FLAG_IS_DEFAULT(YoungPLABSize)) { |
duke@435 | 1075 | FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); |
duke@435 | 1076 | } |
duke@435 | 1077 | if (FLAG_IS_DEFAULT(OldPLABSize)) { |
duke@435 | 1078 | FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); |
duke@435 | 1079 | } |
duke@435 | 1080 | |
phh@1499 | 1081 | // AlwaysTenure flag should make ParNew promote all at first collection. |
duke@435 | 1082 | // See CR 6362902. |
duke@435 | 1083 | if (AlwaysTenure) { |
duke@435 | 1084 | FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); |
duke@435 | 1085 | } |
ysr@1130 | 1086 | // When using compressed oops, we use local overflow stacks, |
ysr@1130 | 1087 | // rather than using a global overflow list chained through |
ysr@1130 | 1088 | // the klass word of the object's pre-image. |
ysr@1130 | 1089 | if (UseCompressedOops && !ParGCUseLocalOverflow) { |
ysr@1130 | 1090 | if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { |
ysr@1130 | 1091 | warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); |
ysr@1130 | 1092 | } |
ysr@1130 | 1093 | FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); |
ysr@1130 | 1094 | } |
ysr@1130 | 1095 | assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); |
duke@435 | 1096 | } |
duke@435 | 1097 | } |
duke@435 | 1098 | |
duke@435 | 1099 | // Adjust some sizes to suit CMS and/or ParNew needs; these work well on |
duke@435 | 1100 | // sparc/solaris for certain applications, but would gain from |
duke@435 | 1101 | // further optimization and tuning efforts, and would almost |
duke@435 | 1102 | // certainly gain from analysis of platform and environment. |
duke@435 | 1103 | void Arguments::set_cms_and_parnew_gc_flags() { |
phh@1499 | 1104 | assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
jmasa@445 | 1105 | assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
jmasa@445 | 1106 | |
duke@435 | 1107 | // If we are using CMS, we prefer to UseParNewGC, |
duke@435 | 1108 | // unless explicitly forbidden. |
ysr@777 | 1109 | if (FLAG_IS_DEFAULT(UseParNewGC)) { |
jmasa@445 | 1110 | FLAG_SET_ERGO(bool, UseParNewGC, true); |
duke@435 | 1111 | } |
duke@435 | 1112 | |
duke@435 | 1113 | // Turn off AdaptiveSizePolicy by default for cms until it is |
jmasa@445 | 1114 | // complete. |
jmasa@445 | 1115 | if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
duke@435 | 1116 | FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
duke@435 | 1117 | } |
duke@435 | 1118 | |
duke@435 | 1119 | // In either case, adjust ParallelGCThreads and/or UseParNewGC |
duke@435 | 1120 | // as needed. |
jmasa@445 | 1121 | if (UseParNewGC) { |
jmasa@445 | 1122 | set_parnew_gc_flags(); |
duke@435 | 1123 | } |
duke@435 | 1124 | |
duke@435 | 1125 | // Now make adjustments for CMS |
duke@435 | 1126 | size_t young_gen_per_worker; |
duke@435 | 1127 | intx new_ratio; |
duke@435 | 1128 | size_t min_new_default; |
duke@435 | 1129 | intx tenuring_default; |
duke@435 | 1130 | if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0 |
duke@435 | 1131 | if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) { |
jmasa@448 | 1132 | FLAG_SET_ERGO(intx, CMSYoungGenPerWorker, 4*M); |
duke@435 | 1133 | } |
duke@435 | 1134 | young_gen_per_worker = 4*M; |
duke@435 | 1135 | new_ratio = (intx)15; |
duke@435 | 1136 | min_new_default = 4*M; |
duke@435 | 1137 | tenuring_default = (intx)0; |
duke@435 | 1138 | } else { // new defaults: "new" as of 6.0 |
duke@435 | 1139 | young_gen_per_worker = CMSYoungGenPerWorker; |
duke@435 | 1140 | new_ratio = (intx)7; |
duke@435 | 1141 | min_new_default = 16*M; |
duke@435 | 1142 | tenuring_default = (intx)4; |
duke@435 | 1143 | } |
duke@435 | 1144 | |
duke@435 | 1145 | // Preferred young gen size for "short" pauses |
duke@435 | 1146 | const uintx parallel_gc_threads = |
duke@435 | 1147 | (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); |
duke@435 | 1148 | const size_t preferred_max_new_size_unaligned = |
duke@435 | 1149 | ScaleForWordSize(young_gen_per_worker * parallel_gc_threads); |
duke@435 | 1150 | const size_t preferred_max_new_size = |
duke@435 | 1151 | align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
duke@435 | 1152 | |
duke@435 | 1153 | // Unless explicitly requested otherwise, size young gen |
duke@435 | 1154 | // for "short" pauses ~ 4M*ParallelGCThreads |
jmasa@1321 | 1155 | |
jmasa@1321 | 1156 | // If either MaxNewSize or NewRatio is set on the command line, |
jmasa@1321 | 1157 | // assume the user is trying to set the size of the young gen. |
jmasa@1321 | 1158 | |
jmasa@1321 | 1159 | if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
jmasa@1321 | 1160 | |
jmasa@1321 | 1161 | // Set MaxNewSize to our calculated preferred_max_new_size unless |
jmasa@1321 | 1162 | // NewSize was set on the command line and it is larger than |
jmasa@1321 | 1163 | // preferred_max_new_size. |
duke@435 | 1164 | if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
jmasa@448 | 1165 | FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
duke@435 | 1166 | } else { |
jmasa@448 | 1167 | FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
duke@435 | 1168 | } |
phh@1499 | 1169 | if (PrintGCDetails && Verbose) { |
jmasa@448 | 1170 | // Too early to use gclog_or_tty |
jmasa@448 | 1171 | tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
jmasa@1321 | 1172 | } |
jmasa@1321 | 1173 | |
jmasa@1321 | 1174 | // Unless explicitly requested otherwise, prefer a large |
jmasa@1321 | 1175 | // Old to Young gen size so as to shift the collection load |
jmasa@1321 | 1176 | // to the old generation concurrent collector |
jmasa@1321 | 1177 | |
jmasa@1321 | 1178 | // If this is only guarded by FLAG_IS_DEFAULT(NewRatio) |
jmasa@1321 | 1179 | // then NewSize and OldSize may be calculated. That would |
jmasa@1321 | 1180 | // generally lead to some differences with ParNewGC for which |
jmasa@1321 | 1181 | // there was no obvious reason. Also limit to the case where |
jmasa@1321 | 1182 | // MaxNewSize has not been set. |
jmasa@1321 | 1183 | |
jmasa@448 | 1184 | FLAG_SET_ERGO(intx, NewRatio, MAX2(NewRatio, new_ratio)); |
duke@435 | 1185 | |
jmasa@1321 | 1186 | // Code along this path potentially sets NewSize and OldSize |
jmasa@1321 | 1187 | |
jmasa@1321 | 1188 | // Calculate the desired minimum size of the young gen but if |
jmasa@1321 | 1189 | // NewSize has been set on the command line, use it here since |
jmasa@1321 | 1190 | // it should be the final value. |
jmasa@1321 | 1191 | size_t min_new; |
jmasa@1321 | 1192 | if (FLAG_IS_DEFAULT(NewSize)) { |
jmasa@1321 | 1193 | min_new = align_size_up(ScaleForWordSize(min_new_default), |
jmasa@1321 | 1194 | os::vm_page_size()); |
jmasa@1321 | 1195 | } else { |
jmasa@1321 | 1196 | min_new = NewSize; |
jmasa@1321 | 1197 | } |
phh@1499 | 1198 | size_t prev_initial_size = InitialHeapSize; |
phh@1499 | 1199 | if (prev_initial_size != 0 && prev_initial_size < min_new + OldSize) { |
phh@1499 | 1200 | FLAG_SET_ERGO(uintx, InitialHeapSize, min_new + OldSize); |
duke@435 | 1201 | // Currently minimum size and the initial heap sizes are the same. |
phh@1499 | 1202 | set_min_heap_size(InitialHeapSize); |
duke@435 | 1203 | if (PrintGCDetails && Verbose) { |
duke@435 | 1204 | warning("Initial heap size increased to " SIZE_FORMAT " M from " |
duke@435 | 1205 | SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", |
phh@1499 | 1206 | InitialHeapSize/M, prev_initial_size/M); |
duke@435 | 1207 | } |
duke@435 | 1208 | } |
jmasa@1321 | 1209 | |
duke@435 | 1210 | // MaxHeapSize is aligned down in collectorPolicy |
jmasa@1321 | 1211 | size_t max_heap = |
jmasa@1321 | 1212 | align_size_down(MaxHeapSize, |
jmasa@1321 | 1213 | CardTableRS::ct_max_alignment_constraint()); |
duke@435 | 1214 | |
phh@1499 | 1215 | if (PrintGCDetails && Verbose) { |
jmasa@448 | 1216 | // Too early to use gclog_or_tty |
jmasa@448 | 1217 | tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
jmasa@448 | 1218 | " initial_heap_size: " SIZE_FORMAT |
jmasa@448 | 1219 | " max_heap: " SIZE_FORMAT, |
phh@1499 | 1220 | min_heap_size(), InitialHeapSize, max_heap); |
jmasa@448 | 1221 | } |
duke@435 | 1222 | if (max_heap > min_new) { |
duke@435 | 1223 | // Unless explicitly requested otherwise, make young gen |
duke@435 | 1224 | // at least min_new, and at most preferred_max_new_size. |
duke@435 | 1225 | if (FLAG_IS_DEFAULT(NewSize)) { |
jmasa@448 | 1226 | FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
jmasa@448 | 1227 | FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
phh@1499 | 1228 | if (PrintGCDetails && Verbose) { |
jmasa@448 | 1229 | // Too early to use gclog_or_tty |
jmasa@448 | 1230 | tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); |
jmasa@448 | 1231 | } |
duke@435 | 1232 | } |
duke@435 | 1233 | // Unless explicitly requested otherwise, size old gen |
duke@435 | 1234 | // so that it's at least 3X of NewSize to begin with; |
duke@435 | 1235 | // later NewRatio will decide how it grows; see above. |
duke@435 | 1236 | if (FLAG_IS_DEFAULT(OldSize)) { |
duke@435 | 1237 | if (max_heap > NewSize) { |
phh@1499 | 1238 | FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); |
phh@1499 | 1239 | if (PrintGCDetails && Verbose) { |
jmasa@448 | 1240 | // Too early to use gclog_or_tty |
jmasa@448 | 1241 | tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); |
jmasa@448 | 1242 | } |
duke@435 | 1243 | } |
duke@435 | 1244 | } |
duke@435 | 1245 | } |
duke@435 | 1246 | } |
duke@435 | 1247 | // Unless explicitly requested otherwise, definitely |
duke@435 | 1248 | // promote all objects surviving "tenuring_default" scavenges. |
duke@435 | 1249 | if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && |
duke@435 | 1250 | FLAG_IS_DEFAULT(SurvivorRatio)) { |
jmasa@448 | 1251 | FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
duke@435 | 1252 | } |
duke@435 | 1253 | // If we decided above (or user explicitly requested) |
duke@435 | 1254 | // `promote all' (via MaxTenuringThreshold := 0), |
duke@435 | 1255 | // prefer minuscule survivor spaces so as not to waste |
duke@435 | 1256 | // space for (non-existent) survivors |
duke@435 | 1257 | if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { |
jmasa@448 | 1258 | FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
duke@435 | 1259 | } |
duke@435 | 1260 | // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, |
duke@435 | 1261 | // set CMSParPromoteBlocksToClaim equal to OldPLABSize. |
duke@435 | 1262 | // This is done in order to make ParNew+CMS configuration to work |
duke@435 | 1263 | // with YoungPLABSize and OldPLABSize options. |
duke@435 | 1264 | // See CR 6362902. |
duke@435 | 1265 | if (!FLAG_IS_DEFAULT(OldPLABSize)) { |
duke@435 | 1266 | if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
jmasa@448 | 1267 | // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
jmasa@448 | 1268 | // is. In this situtation let CMSParPromoteBlocksToClaim follow |
jmasa@448 | 1269 | // the value (either from the command line or ergonomics) of |
jmasa@448 | 1270 | // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
jmasa@448 | 1271 | FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
ysr@1580 | 1272 | } else { |
duke@435 | 1273 | // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
duke@435 | 1274 | // CMSParPromoteBlocksToClaim is a collector-specific flag, so |
duke@435 | 1275 | // we'll let it to take precedence. |
duke@435 | 1276 | jio_fprintf(defaultStream::error_stream(), |
jmasa@1321 | 1277 | "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
jmasa@1321 | 1278 | " options are specified for the CMS collector." |
jmasa@1321 | 1279 | " CMSParPromoteBlocksToClaim will take precedence.\n"); |
duke@435 | 1280 | } |
duke@435 | 1281 | } |
ysr@1580 | 1282 | if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
ysr@1580 | 1283 | // OldPLAB sizing manually turned off: Use a larger default setting, |
ysr@1580 | 1284 | // unless it was manually specified. This is because a too-low value |
ysr@1580 | 1285 | // will slow down scavenges. |
ysr@1580 | 1286 | if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
ysr@1580 | 1287 | FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
ysr@1580 | 1288 | } |
ysr@1580 | 1289 | } |
ysr@1580 | 1290 | // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
ysr@1580 | 1291 | FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
ysr@1580 | 1292 | // If either of the static initialization defaults have changed, note this |
ysr@1580 | 1293 | // modification. |
ysr@1580 | 1294 | if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
ysr@1580 | 1295 | CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
ysr@1580 | 1296 | } |
jmasa@1719 | 1297 | if (PrintGCDetails && Verbose) { |
jmasa@1719 | 1298 | tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
jmasa@1719 | 1299 | MarkStackSize / K, MarkStackSizeMax / K); |
jmasa@1719 | 1300 | tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
jmasa@1719 | 1301 | } |
duke@435 | 1302 | } |
ysr@1580 | 1303 | #endif // KERNEL |
duke@435 | 1304 | |
kvn@1926 | 1305 | void set_object_alignment() { |
kvn@1926 | 1306 | // Object alignment. |
kvn@1926 | 1307 | assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
kvn@1926 | 1308 | MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
kvn@1926 | 1309 | assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
kvn@1926 | 1310 | MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
kvn@1926 | 1311 | assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
kvn@1926 | 1312 | MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
kvn@1926 | 1313 | |
kvn@1926 | 1314 | LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
kvn@1926 | 1315 | LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
kvn@1926 | 1316 | |
kvn@1926 | 1317 | // Oop encoding heap max |
kvn@1926 | 1318 | OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
kvn@1926 | 1319 | |
kvn@1926 | 1320 | #ifndef KERNEL |
kvn@1926 | 1321 | // Set CMS global values |
kvn@1926 | 1322 | CompactibleFreeListSpace::set_cms_values(); |
kvn@1926 | 1323 | #endif // KERNEL |
kvn@1926 | 1324 | } |
kvn@1926 | 1325 | |
kvn@1926 | 1326 | bool verify_object_alignment() { |
kvn@1926 | 1327 | // Object alignment. |
kvn@1926 | 1328 | if (!is_power_of_2(ObjectAlignmentInBytes)) { |
kvn@1926 | 1329 | jio_fprintf(defaultStream::error_stream(), |
kvn@2184 | 1330 | "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
kvn@2184 | 1331 | (int)ObjectAlignmentInBytes); |
kvn@1926 | 1332 | return false; |
kvn@1926 | 1333 | } |
kvn@1926 | 1334 | if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
kvn@1926 | 1335 | jio_fprintf(defaultStream::error_stream(), |
kvn@2184 | 1336 | "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
kvn@2184 | 1337 | (int)ObjectAlignmentInBytes, BytesPerLong); |
kvn@2184 | 1338 | return false; |
kvn@2184 | 1339 | } |
kvn@2184 | 1340 | // It does not make sense to have big object alignment |
kvn@2184 | 1341 | // since a space lost due to alignment will be greater |
kvn@2184 | 1342 | // then a saved space from compressed oops. |
kvn@2184 | 1343 | if ((int)ObjectAlignmentInBytes > 256) { |
kvn@2184 | 1344 | jio_fprintf(defaultStream::error_stream(), |
kvn@2184 | 1345 | "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
kvn@2184 | 1346 | (int)ObjectAlignmentInBytes); |
kvn@2184 | 1347 | return false; |
kvn@2184 | 1348 | } |
kvn@2184 | 1349 | // In case page size is very small. |
kvn@2184 | 1350 | if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
kvn@2184 | 1351 | jio_fprintf(defaultStream::error_stream(), |
kvn@2184 | 1352 | "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
kvn@2184 | 1353 | (int)ObjectAlignmentInBytes, os::vm_page_size()); |
kvn@1926 | 1354 | return false; |
kvn@1926 | 1355 | } |
kvn@1926 | 1356 | return true; |
kvn@1926 | 1357 | } |
kvn@1926 | 1358 | |
coleenp@570 | 1359 | inline uintx max_heap_for_compressed_oops() { |
kvn@2305 | 1360 | // Avoid sign flip. |
kvn@2305 | 1361 | if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { |
kvn@2305 | 1362 | return 0; |
kvn@2305 | 1363 | } |
kvn@2305 | 1364 | LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); |
phh@1499 | 1365 | NOT_LP64(ShouldNotReachHere(); return 0); |
coleenp@570 | 1366 | } |
coleenp@570 | 1367 | |
duke@435 | 1368 | bool Arguments::should_auto_select_low_pause_collector() { |
duke@435 | 1369 | if (UseAutoGCSelectPolicy && |
duke@435 | 1370 | !FLAG_IS_DEFAULT(MaxGCPauseMillis) && |
duke@435 | 1371 | (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { |
duke@435 | 1372 | if (PrintGCDetails) { |
duke@435 | 1373 | // Cannot use gclog_or_tty yet. |
duke@435 | 1374 | tty->print_cr("Automatic selection of the low pause collector" |
duke@435 | 1375 | " based on pause goal of %d (ms)", MaxGCPauseMillis); |
duke@435 | 1376 | } |
duke@435 | 1377 | return true; |
duke@435 | 1378 | } |
duke@435 | 1379 | return false; |
duke@435 | 1380 | } |
duke@435 | 1381 | |
duke@435 | 1382 | void Arguments::set_ergonomics_flags() { |
duke@435 | 1383 | // Parallel GC is not compatible with sharing. If one specifies |
phh@1499 | 1384 | // that they want sharing explicitly, do not set ergonomics flags. |
duke@435 | 1385 | if (DumpSharedSpaces || ForceSharedSpaces) { |
duke@435 | 1386 | return; |
duke@435 | 1387 | } |
duke@435 | 1388 | |
duke@435 | 1389 | if (os::is_server_class_machine() && !force_client_mode ) { |
duke@435 | 1390 | // If no other collector is requested explicitly, |
duke@435 | 1391 | // let the VM select the collector based on |
duke@435 | 1392 | // machine class and automatic selection policy. |
duke@435 | 1393 | if (!UseSerialGC && |
duke@435 | 1394 | !UseConcMarkSweepGC && |
ysr@777 | 1395 | !UseG1GC && |
duke@435 | 1396 | !UseParNewGC && |
duke@435 | 1397 | !DumpSharedSpaces && |
duke@435 | 1398 | FLAG_IS_DEFAULT(UseParallelGC)) { |
duke@435 | 1399 | if (should_auto_select_low_pause_collector()) { |
duke@435 | 1400 | FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); |
duke@435 | 1401 | } else { |
duke@435 | 1402 | FLAG_SET_ERGO(bool, UseParallelGC, true); |
duke@435 | 1403 | } |
duke@435 | 1404 | no_shared_spaces(); |
duke@435 | 1405 | } |
duke@435 | 1406 | } |
coleenp@548 | 1407 | |
never@1445 | 1408 | #ifndef ZERO |
coleenp@548 | 1409 | #ifdef _LP64 |
coleenp@548 | 1410 | // Check that UseCompressedOops can be set with the max heap size allocated |
coleenp@548 | 1411 | // by ergonomics. |
coleenp@622 | 1412 | if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
iveresov@2138 | 1413 | #if !defined(COMPILER1) || defined(TIERED) |
johnc@2535 | 1414 | if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
kvn@1367 | 1415 | FLAG_SET_ERGO(bool, UseCompressedOops, true); |
coleenp@548 | 1416 | } |
roland@1495 | 1417 | #endif |
coleenp@760 | 1418 | #ifdef _WIN64 |
coleenp@760 | 1419 | if (UseLargePages && UseCompressedOops) { |
coleenp@760 | 1420 | // Cannot allocate guard pages for implicit checks in indexed addressing |
coleenp@760 | 1421 | // mode, when large pages are specified on windows. |
kvn@1077 | 1422 | // This flag could be switched ON if narrow oop base address is set to 0, |
kvn@1077 | 1423 | // see code in Universe::initialize_heap(). |
kvn@1077 | 1424 | Universe::set_narrow_oop_use_implicit_null_checks(false); |
coleenp@760 | 1425 | } |
coleenp@760 | 1426 | #endif // _WIN64 |
coleenp@548 | 1427 | } else { |
coleenp@548 | 1428 | if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
ysr@779 | 1429 | warning("Max heap size too large for Compressed Oops"); |
coleenp@548 | 1430 | FLAG_SET_DEFAULT(UseCompressedOops, false); |
coleenp@548 | 1431 | } |
coleenp@548 | 1432 | } |
coleenp@548 | 1433 | // Also checks that certain machines are slower with compressed oops |
coleenp@548 | 1434 | // in vm_version initialization code. |
coleenp@548 | 1435 | #endif // _LP64 |
never@1445 | 1436 | #endif // !ZERO |
duke@435 | 1437 | } |
duke@435 | 1438 | |
duke@435 | 1439 | void Arguments::set_parallel_gc_flags() { |
ysr@777 | 1440 | assert(UseParallelGC || UseParallelOldGC, "Error"); |
duke@435 | 1441 | // If parallel old was requested, automatically enable parallel scavenge. |
duke@435 | 1442 | if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { |
duke@435 | 1443 | FLAG_SET_DEFAULT(UseParallelGC, true); |
duke@435 | 1444 | } |
duke@435 | 1445 | |
duke@435 | 1446 | // If no heap maximum was requested explicitly, use some reasonable fraction |
duke@435 | 1447 | // of the physical memory, up to a maximum of 1GB. |
duke@435 | 1448 | if (UseParallelGC) { |
jmasa@445 | 1449 | FLAG_SET_ERGO(uintx, ParallelGCThreads, |
jmasa@445 | 1450 | Abstract_VM_Version::parallel_worker_threads()); |
jmasa@445 | 1451 | |
duke@435 | 1452 | // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
duke@435 | 1453 | // SurvivorRatio has been set, reset their default values to SurvivorRatio + |
duke@435 | 1454 | // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. |
duke@435 | 1455 | // See CR 6362902 for details. |
duke@435 | 1456 | if (!FLAG_IS_DEFAULT(SurvivorRatio)) { |
duke@435 | 1457 | if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { |
duke@435 | 1458 | FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); |
duke@435 | 1459 | } |
duke@435 | 1460 | if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { |
duke@435 | 1461 | FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); |
duke@435 | 1462 | } |
duke@435 | 1463 | } |
duke@435 | 1464 | |
duke@435 | 1465 | if (UseParallelOldGC) { |
duke@435 | 1466 | // Par compact uses lower default values since they are treated as |
jmasa@448 | 1467 | // minimums. These are different defaults because of the different |
jmasa@448 | 1468 | // interpretation and are not ergonomically set. |
duke@435 | 1469 | if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
jmasa@448 | 1470 | FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
duke@435 | 1471 | } |
duke@435 | 1472 | if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { |
jmasa@448 | 1473 | FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
duke@435 | 1474 | } |
duke@435 | 1475 | } |
duke@435 | 1476 | } |
duke@435 | 1477 | } |
duke@435 | 1478 | |
ysr@777 | 1479 | void Arguments::set_g1_gc_flags() { |
ysr@777 | 1480 | assert(UseG1GC, "Error"); |
ysr@777 | 1481 | #ifdef COMPILER1 |
ysr@777 | 1482 | FastTLABRefill = false; |
ysr@777 | 1483 | #endif |
ysr@777 | 1484 | FLAG_SET_DEFAULT(ParallelGCThreads, |
ysr@777 | 1485 | Abstract_VM_Version::parallel_worker_threads()); |
ysr@777 | 1486 | if (ParallelGCThreads == 0) { |
ysr@777 | 1487 | FLAG_SET_DEFAULT(ParallelGCThreads, |
johnc@1186 | 1488 | Abstract_VM_Version::parallel_worker_threads()); |
ysr@777 | 1489 | } |
ysr@777 | 1490 | no_shared_spaces(); |
johnc@1186 | 1491 | |
jmasa@1719 | 1492 | if (FLAG_IS_DEFAULT(MarkStackSize)) { |
jcoomes@1746 | 1493 | FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
jmasa@1719 | 1494 | } |
jmasa@1719 | 1495 | if (PrintGCDetails && Verbose) { |
jmasa@1719 | 1496 | tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
jmasa@1719 | 1497 | MarkStackSize / K, MarkStackSizeMax / K); |
jmasa@1719 | 1498 | tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
jmasa@1719 | 1499 | } |
tonyp@1791 | 1500 | |
tonyp@1791 | 1501 | if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { |
tonyp@1791 | 1502 | // In G1, we want the default GC overhead goal to be higher than |
tonyp@1791 | 1503 | // say in PS. So we set it here to 10%. Otherwise the heap might |
tonyp@1791 | 1504 | // be expanded more aggressively than we would like it to. In |
tonyp@1791 | 1505 | // fact, even 10% seems to not be high enough in some cases |
tonyp@1791 | 1506 | // (especially small GC stress tests that the main thing they do |
tonyp@1791 | 1507 | // is allocation). We might consider increase it further. |
tonyp@1791 | 1508 | FLAG_SET_DEFAULT(GCTimeRatio, 9); |
tonyp@1791 | 1509 | } |
ysr@777 | 1510 | } |
ysr@777 | 1511 | |
phh@1499 | 1512 | void Arguments::set_heap_size() { |
phh@1499 | 1513 | if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { |
phh@1499 | 1514 | // Deprecated flag |
phh@1499 | 1515 | FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); |
phh@1499 | 1516 | } |
phh@1499 | 1517 | |
phh@1499 | 1518 | const julong phys_mem = |
phh@1499 | 1519 | FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) |
phh@1499 | 1520 | : (julong)MaxRAM; |
phh@1499 | 1521 | |
phh@1499 | 1522 | // If the maximum heap size has not been set with -Xmx, |
phh@1499 | 1523 | // then set it as fraction of the size of physical memory, |
phh@1499 | 1524 | // respecting the maximum and minimum sizes of the heap. |
ysr@777 | 1525 | if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
phh@1499 | 1526 | julong reasonable_max = phys_mem / MaxRAMFraction; |
phh@1499 | 1527 | |
phh@1499 | 1528 | if (phys_mem <= MaxHeapSize * MinRAMFraction) { |
phh@1499 | 1529 | // Small physical memory, so use a minimum fraction of it for the heap |
phh@1499 | 1530 | reasonable_max = phys_mem / MinRAMFraction; |
phh@1499 | 1531 | } else { |
phh@1499 | 1532 | // Not-small physical memory, so require a heap at least |
phh@1499 | 1533 | // as large as MaxHeapSize |
phh@1499 | 1534 | reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); |
ysr@777 | 1535 | } |
phh@1499 | 1536 | if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { |
phh@1499 | 1537 | // Limit the heap size to ErgoHeapSizeLimit |
phh@1499 | 1538 | reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); |
phh@1499 | 1539 | } |
phh@1499 | 1540 | if (UseCompressedOops) { |
phh@1499 | 1541 | // Limit the heap size to the maximum possible when using compressed oops |
kvn@2305 | 1542 | julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
kvn@2305 | 1543 | if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { |
kvn@2305 | 1544 | // Heap should be above HeapBaseMinAddress to get zero based compressed oops |
kvn@2305 | 1545 | // but it should be not less than default MaxHeapSize. |
kvn@2305 | 1546 | max_coop_heap -= HeapBaseMinAddress; |
kvn@2305 | 1547 | } |
kvn@2305 | 1548 | reasonable_max = MIN2(reasonable_max, max_coop_heap); |
phh@1499 | 1549 | } |
phh@1499 | 1550 | reasonable_max = os::allocatable_physical_memory(reasonable_max); |
phh@1499 | 1551 | |
phh@1499 | 1552 | if (!FLAG_IS_DEFAULT(InitialHeapSize)) { |
phh@1499 | 1553 | // An initial heap size was specified on the command line, |
phh@1499 | 1554 | // so be sure that the maximum size is consistent. Done |
phh@1499 | 1555 | // after call to allocatable_physical_memory because that |
phh@1499 | 1556 | // method might reduce the allocation size. |
phh@1499 | 1557 | reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); |
phh@1499 | 1558 | } |
phh@1499 | 1559 | |
ysr@777 | 1560 | if (PrintGCDetails && Verbose) { |
ysr@777 | 1561 | // Cannot use gclog_or_tty yet. |
phh@1499 | 1562 | tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
ysr@777 | 1563 | } |
phh@1499 | 1564 | FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
phh@1499 | 1565 | } |
phh@1499 | 1566 | |
phh@1499 | 1567 | // If the initial_heap_size has not been set with InitialHeapSize |
phh@1499 | 1568 | // or -Xms, then set it as fraction of the size of physical memory, |
phh@1499 | 1569 | // respecting the maximum and minimum sizes of the heap. |
phh@1499 | 1570 | if (FLAG_IS_DEFAULT(InitialHeapSize)) { |
phh@1509 | 1571 | julong reasonable_minimum = (julong)(OldSize + NewSize); |
phh@1509 | 1572 | |
phh@1509 | 1573 | reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
phh@1509 | 1574 | |
phh@1509 | 1575 | reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
phh@1509 | 1576 | |
phh@1499 | 1577 | julong reasonable_initial = phys_mem / InitialRAMFraction; |
phh@1499 | 1578 | |
phh@1509 | 1579 | reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
phh@1499 | 1580 | reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
phh@1499 | 1581 | |
phh@1499 | 1582 | reasonable_initial = os::allocatable_physical_memory(reasonable_initial); |
phh@1499 | 1583 | |
phh@1499 | 1584 | if (PrintGCDetails && Verbose) { |
phh@1499 | 1585 | // Cannot use gclog_or_tty yet. |
phh@1499 | 1586 | tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); |
phh@1509 | 1587 | tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
ysr@777 | 1588 | } |
phh@1499 | 1589 | FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
phh@1509 | 1590 | set_min_heap_size((uintx)reasonable_minimum); |
ysr@777 | 1591 | } |
ysr@777 | 1592 | } |
ysr@777 | 1593 | |
duke@435 | 1594 | // This must be called after ergonomics because we want bytecode rewriting |
duke@435 | 1595 | // if the server compiler is used, or if UseSharedSpaces is disabled. |
duke@435 | 1596 | void Arguments::set_bytecode_flags() { |
duke@435 | 1597 | // Better not attempt to store into a read-only space. |
duke@435 | 1598 | if (UseSharedSpaces) { |
duke@435 | 1599 | FLAG_SET_DEFAULT(RewriteBytecodes, false); |
duke@435 | 1600 | FLAG_SET_DEFAULT(RewriteFrequentPairs, false); |
duke@435 | 1601 | } |
duke@435 | 1602 | |
duke@435 | 1603 | if (!RewriteBytecodes) { |
duke@435 | 1604 | FLAG_SET_DEFAULT(RewriteFrequentPairs, false); |
duke@435 | 1605 | } |
duke@435 | 1606 | } |
duke@435 | 1607 | |
duke@435 | 1608 | // Aggressive optimization flags -XX:+AggressiveOpts |
duke@435 | 1609 | void Arguments::set_aggressive_opts_flags() { |
never@452 | 1610 | #ifdef COMPILER2 |
never@452 | 1611 | if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
never@452 | 1612 | if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
never@452 | 1613 | FLAG_SET_DEFAULT(EliminateAutoBox, true); |
never@452 | 1614 | } |
never@452 | 1615 | if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
never@452 | 1616 | FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
never@452 | 1617 | } |
never@452 | 1618 | |
never@452 | 1619 | // Feed the cache size setting into the JDK |
never@452 | 1620 | char buffer[1024]; |
xlu@948 | 1621 | sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
never@452 | 1622 | add_property(buffer); |
never@452 | 1623 | } |
kvn@500 | 1624 | if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
kvn@500 | 1625 | FLAG_SET_DEFAULT(DoEscapeAnalysis, true); |
kvn@500 | 1626 | } |
never@851 | 1627 | if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
never@851 | 1628 | FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
never@851 | 1629 | } |
kvn@1977 | 1630 | if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeStringConcat)) { |
kvn@1977 | 1631 | FLAG_SET_DEFAULT(OptimizeStringConcat, true); |
kvn@1977 | 1632 | } |
never@2118 | 1633 | if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeFill)) { |
never@2118 | 1634 | FLAG_SET_DEFAULT(OptimizeFill, true); |
never@2118 | 1635 | } |
never@452 | 1636 | #endif |
never@452 | 1637 | |
duke@435 | 1638 | if (AggressiveOpts) { |
sbohne@496 | 1639 | // Sample flag setting code |
sbohne@496 | 1640 | // if (FLAG_IS_DEFAULT(EliminateZeroing)) { |
sbohne@496 | 1641 | // FLAG_SET_DEFAULT(EliminateZeroing, true); |
sbohne@496 | 1642 | // } |
duke@435 | 1643 | } |
duke@435 | 1644 | } |
duke@435 | 1645 | |
duke@435 | 1646 | //=========================================================================================================== |
duke@435 | 1647 | // Parsing of java.compiler property |
duke@435 | 1648 | |
duke@435 | 1649 | void Arguments::process_java_compiler_argument(char* arg) { |
duke@435 | 1650 | // For backwards compatibility, Djava.compiler=NONE or "" |
duke@435 | 1651 | // causes us to switch to -Xint mode UNLESS -Xdebug |
duke@435 | 1652 | // is also specified. |
duke@435 | 1653 | if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { |
duke@435 | 1654 | set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. |
duke@435 | 1655 | } |
duke@435 | 1656 | } |
duke@435 | 1657 | |
duke@435 | 1658 | void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { |
duke@435 | 1659 | _sun_java_launcher = strdup(launcher); |
sla@2584 | 1660 | if (strcmp("gamma", _sun_java_launcher) == 0) { |
sla@2584 | 1661 | _created_by_gamma_launcher = true; |
sla@2584 | 1662 | } |
duke@435 | 1663 | } |
duke@435 | 1664 | |
duke@435 | 1665 | bool Arguments::created_by_java_launcher() { |
duke@435 | 1666 | assert(_sun_java_launcher != NULL, "property must have value"); |
duke@435 | 1667 | return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; |
duke@435 | 1668 | } |
duke@435 | 1669 | |
sla@2584 | 1670 | bool Arguments::created_by_gamma_launcher() { |
sla@2584 | 1671 | return _created_by_gamma_launcher; |
sla@2584 | 1672 | } |
sla@2584 | 1673 | |
duke@435 | 1674 | //=========================================================================================================== |
duke@435 | 1675 | // Parsing of main arguments |
duke@435 | 1676 | |
johnc@1679 | 1677 | bool Arguments::verify_interval(uintx val, uintx min, |
johnc@1679 | 1678 | uintx max, const char* name) { |
johnc@1679 | 1679 | // Returns true iff value is in the inclusive interval [min..max] |
johnc@1679 | 1680 | // false, otherwise. |
johnc@1679 | 1681 | if (val >= min && val <= max) { |
johnc@1679 | 1682 | return true; |
johnc@1679 | 1683 | } |
johnc@1679 | 1684 | jio_fprintf(defaultStream::error_stream(), |
johnc@1679 | 1685 | "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
johnc@1679 | 1686 | " and " UINTX_FORMAT "\n", |
johnc@1679 | 1687 | name, val, min, max); |
johnc@1679 | 1688 | return false; |
johnc@1679 | 1689 | } |
johnc@1679 | 1690 | |
ptisnovs@2099 | 1691 | bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
ptisnovs@2099 | 1692 | // Returns true if given value is greater than specified min threshold |
ptisnovs@2099 | 1693 | // false, otherwise. |
ptisnovs@2099 | 1694 | if (val >= min ) { |
ptisnovs@2099 | 1695 | return true; |
ptisnovs@2099 | 1696 | } |
ptisnovs@2099 | 1697 | jio_fprintf(defaultStream::error_stream(), |
ptisnovs@2099 | 1698 | "%s of " INTX_FORMAT " is invalid; must be greater than " INTX_FORMAT "\n", |
ptisnovs@2099 | 1699 | name, val, min); |
ptisnovs@2099 | 1700 | return false; |
ptisnovs@2099 | 1701 | } |
ptisnovs@2099 | 1702 | |
duke@435 | 1703 | bool Arguments::verify_percentage(uintx value, const char* name) { |
duke@435 | 1704 | if (value <= 100) { |
duke@435 | 1705 | return true; |
duke@435 | 1706 | } |
duke@435 | 1707 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1708 | "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", |
duke@435 | 1709 | name, value); |
duke@435 | 1710 | return false; |
duke@435 | 1711 | } |
duke@435 | 1712 | |
phh@1499 | 1713 | static void force_serial_gc() { |
duke@435 | 1714 | FLAG_SET_DEFAULT(UseSerialGC, true); |
duke@435 | 1715 | FLAG_SET_DEFAULT(UseParNewGC, false); |
duke@435 | 1716 | FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); |
ysr@1380 | 1717 | FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
duke@435 | 1718 | FLAG_SET_DEFAULT(UseParallelGC, false); |
duke@435 | 1719 | FLAG_SET_DEFAULT(UseParallelOldGC, false); |
ysr@777 | 1720 | FLAG_SET_DEFAULT(UseG1GC, false); |
duke@435 | 1721 | } |
duke@435 | 1722 | |
duke@435 | 1723 | static bool verify_serial_gc_flags() { |
duke@435 | 1724 | return (UseSerialGC && |
ysr@1380 | 1725 | !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
ysr@777 | 1726 | UseParallelGC || UseParallelOldGC)); |
duke@435 | 1727 | } |
duke@435 | 1728 | |
jmasa@445 | 1729 | // Check consistency of GC selection |
jmasa@445 | 1730 | bool Arguments::check_gc_consistency() { |
jmasa@445 | 1731 | bool status = true; |
jmasa@445 | 1732 | // Ensure that the user has not selected conflicting sets |
jmasa@445 | 1733 | // of collectors. [Note: this check is merely a user convenience; |
jmasa@445 | 1734 | // collectors over-ride each other so that only a non-conflicting |
jmasa@445 | 1735 | // set is selected; however what the user gets is not what they |
jmasa@445 | 1736 | // may have expected from the combination they asked for. It's |
jmasa@445 | 1737 | // better to reduce user confusion by not allowing them to |
jmasa@445 | 1738 | // select conflicting combinations. |
jmasa@445 | 1739 | uint i = 0; |
jmasa@445 | 1740 | if (UseSerialGC) i++; |
jmasa@445 | 1741 | if (UseConcMarkSweepGC || UseParNewGC) i++; |
jmasa@445 | 1742 | if (UseParallelGC || UseParallelOldGC) i++; |
ysr@1280 | 1743 | if (UseG1GC) i++; |
jmasa@445 | 1744 | if (i > 1) { |
jmasa@445 | 1745 | jio_fprintf(defaultStream::error_stream(), |
jmasa@445 | 1746 | "Conflicting collector combinations in option list; " |
jmasa@445 | 1747 | "please refer to the release notes for the combinations " |
jmasa@445 | 1748 | "allowed\n"); |
jmasa@445 | 1749 | status = false; |
jmasa@445 | 1750 | } |
jmasa@445 | 1751 | |
jmasa@445 | 1752 | return status; |
jmasa@445 | 1753 | } |
jmasa@445 | 1754 | |
ptisnovs@2099 | 1755 | // Check stack pages settings |
ptisnovs@2099 | 1756 | bool Arguments::check_stack_pages() |
ptisnovs@2099 | 1757 | { |
ptisnovs@2099 | 1758 | bool status = true; |
ptisnovs@2099 | 1759 | status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
ptisnovs@2099 | 1760 | status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
coleenp@2222 | 1761 | // greater stack shadow pages can't generate instruction to bang stack |
coleenp@2222 | 1762 | status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
ptisnovs@2099 | 1763 | return status; |
ptisnovs@2099 | 1764 | } |
ptisnovs@2099 | 1765 | |
duke@435 | 1766 | // Check the consistency of vm_init_args |
duke@435 | 1767 | bool Arguments::check_vm_args_consistency() { |
duke@435 | 1768 | // Method for adding checks for flag consistency. |
duke@435 | 1769 | // The intent is to warn the user of all possible conflicts, |
duke@435 | 1770 | // before returning an error. |
duke@435 | 1771 | // Note: Needs platform-dependent factoring. |
duke@435 | 1772 | bool status = true; |
duke@435 | 1773 | |
duke@435 | 1774 | #if ( (defined(COMPILER2) && defined(SPARC))) |
duke@435 | 1775 | // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init |
duke@435 | 1776 | // on sparc doesn't require generation of a stub as is the case on, e.g., |
duke@435 | 1777 | // x86. Normally, VM_Version_init must be called from init_globals in |
duke@435 | 1778 | // init.cpp, which is called by the initial java thread *after* arguments |
duke@435 | 1779 | // have been parsed. VM_Version_init gets called twice on sparc. |
duke@435 | 1780 | extern void VM_Version_init(); |
duke@435 | 1781 | VM_Version_init(); |
duke@435 | 1782 | if (!VM_Version::has_v9()) { |
duke@435 | 1783 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1784 | "V8 Machine detected, Server requires V9\n"); |
duke@435 | 1785 | status = false; |
duke@435 | 1786 | } |
duke@435 | 1787 | #endif /* COMPILER2 && SPARC */ |
duke@435 | 1788 | |
duke@435 | 1789 | // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product |
duke@435 | 1790 | // builds so the cost of stack banging can be measured. |
duke@435 | 1791 | #if (defined(PRODUCT) && defined(SOLARIS)) |
duke@435 | 1792 | if (!UseBoundThreads && !UseStackBanging) { |
duke@435 | 1793 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1794 | "-UseStackBanging conflicts with -UseBoundThreads\n"); |
duke@435 | 1795 | |
duke@435 | 1796 | status = false; |
duke@435 | 1797 | } |
duke@435 | 1798 | #endif |
duke@435 | 1799 | |
duke@435 | 1800 | if (TLABRefillWasteFraction == 0) { |
duke@435 | 1801 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1802 | "TLABRefillWasteFraction should be a denominator, " |
duke@435 | 1803 | "not " SIZE_FORMAT "\n", |
duke@435 | 1804 | TLABRefillWasteFraction); |
duke@435 | 1805 | status = false; |
duke@435 | 1806 | } |
duke@435 | 1807 | |
jmasa@445 | 1808 | status = status && verify_percentage(AdaptiveSizePolicyWeight, |
duke@435 | 1809 | "AdaptiveSizePolicyWeight"); |
jmasa@445 | 1810 | status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
jmasa@445 | 1811 | status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
jmasa@445 | 1812 | status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
jmasa@445 | 1813 | status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
duke@435 | 1814 | |
duke@435 | 1815 | if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
duke@435 | 1816 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1817 | "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " |
duke@435 | 1818 | "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", |
duke@435 | 1819 | MinHeapFreeRatio, MaxHeapFreeRatio); |
duke@435 | 1820 | status = false; |
duke@435 | 1821 | } |
duke@435 | 1822 | // Keeping the heap 100% free is hard ;-) so limit it to 99%. |
duke@435 | 1823 | MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); |
duke@435 | 1824 | |
duke@435 | 1825 | if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { |
duke@435 | 1826 | MarkSweepAlwaysCompactCount = 1; // Move objects every gc. |
duke@435 | 1827 | } |
duke@435 | 1828 | |
jcoomes@918 | 1829 | if (UseParallelOldGC && ParallelOldGCSplitALot) { |
jcoomes@918 | 1830 | // Settings to encourage splitting. |
jcoomes@918 | 1831 | if (!FLAG_IS_CMDLINE(NewRatio)) { |
jcoomes@918 | 1832 | FLAG_SET_CMDLINE(intx, NewRatio, 2); |
jcoomes@918 | 1833 | } |
jcoomes@918 | 1834 | if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
jcoomes@918 | 1835 | FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
jcoomes@918 | 1836 | } |
jcoomes@918 | 1837 | } |
jcoomes@918 | 1838 | |
jmasa@445 | 1839 | status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
jmasa@445 | 1840 | status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
duke@435 | 1841 | if (GCTimeLimit == 100) { |
duke@435 | 1842 | // Turn off gc-overhead-limit-exceeded checks |
duke@435 | 1843 | FLAG_SET_DEFAULT(UseGCOverheadLimit, false); |
duke@435 | 1844 | } |
duke@435 | 1845 | |
jmasa@445 | 1846 | status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
duke@435 | 1847 | |
jcoomes@1981 | 1848 | // Check whether user-specified sharing option conflicts with GC or page size. |
jcoomes@1981 | 1849 | // Both sharing and large pages are enabled by default on some platforms; |
jcoomes@1981 | 1850 | // large pages override sharing only if explicitly set on the command line. |
jcoomes@1981 | 1851 | const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
jcoomes@1981 | 1852 | UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
jcoomes@1981 | 1853 | UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
duke@435 | 1854 | if (cannot_share) { |
duke@435 | 1855 | // Either force sharing on by forcing the other options off, or |
duke@435 | 1856 | // force sharing off. |
duke@435 | 1857 | if (DumpSharedSpaces || ForceSharedSpaces) { |
ysr@1380 | 1858 | jio_fprintf(defaultStream::error_stream(), |
jcoomes@1981 | 1859 | "Using Serial GC and default page size because of %s\n", |
jcoomes@1981 | 1860 | ForceSharedSpaces ? "-Xshare:on" : "-Xshare:dump"); |
phh@1499 | 1861 | force_serial_gc(); |
jcoomes@1981 | 1862 | FLAG_SET_DEFAULT(UseLargePages, false); |
duke@435 | 1863 | } else { |
phh@1499 | 1864 | if (UseSharedSpaces && Verbose) { |
ysr@1380 | 1865 | jio_fprintf(defaultStream::error_stream(), |
ysr@1380 | 1866 | "Turning off use of shared archive because of " |
phh@1499 | 1867 | "choice of garbage collector or large pages\n"); |
ysr@1380 | 1868 | } |
duke@435 | 1869 | no_shared_spaces(); |
duke@435 | 1870 | } |
jcoomes@1981 | 1871 | } else if (UseLargePages && (UseSharedSpaces || DumpSharedSpaces)) { |
jcoomes@1981 | 1872 | FLAG_SET_DEFAULT(UseLargePages, false); |
duke@435 | 1873 | } |
duke@435 | 1874 | |
jmasa@445 | 1875 | status = status && check_gc_consistency(); |
ptisnovs@2099 | 1876 | status = status && check_stack_pages(); |
duke@435 | 1877 | |
duke@435 | 1878 | if (_has_alloc_profile) { |
duke@435 | 1879 | if (UseParallelGC || UseParallelOldGC) { |
duke@435 | 1880 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1881 | "error: invalid argument combination.\n" |
duke@435 | 1882 | "Allocation profiling (-Xaprof) cannot be used together with " |
duke@435 | 1883 | "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); |
duke@435 | 1884 | status = false; |
duke@435 | 1885 | } |
duke@435 | 1886 | if (UseConcMarkSweepGC) { |
duke@435 | 1887 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1888 | "error: invalid argument combination.\n" |
duke@435 | 1889 | "Allocation profiling (-Xaprof) cannot be used together with " |
duke@435 | 1890 | "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); |
duke@435 | 1891 | status = false; |
duke@435 | 1892 | } |
duke@435 | 1893 | } |
duke@435 | 1894 | |
duke@435 | 1895 | if (CMSIncrementalMode) { |
duke@435 | 1896 | if (!UseConcMarkSweepGC) { |
duke@435 | 1897 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1898 | "error: invalid argument combination.\n" |
duke@435 | 1899 | "The CMS collector (-XX:+UseConcMarkSweepGC) must be " |
duke@435 | 1900 | "selected in order\nto use CMSIncrementalMode.\n"); |
duke@435 | 1901 | status = false; |
duke@435 | 1902 | } else { |
jmasa@445 | 1903 | status = status && verify_percentage(CMSIncrementalDutyCycle, |
duke@435 | 1904 | "CMSIncrementalDutyCycle"); |
jmasa@445 | 1905 | status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
duke@435 | 1906 | "CMSIncrementalDutyCycleMin"); |
jmasa@445 | 1907 | status = status && verify_percentage(CMSIncrementalSafetyFactor, |
duke@435 | 1908 | "CMSIncrementalSafetyFactor"); |
jmasa@445 | 1909 | status = status && verify_percentage(CMSIncrementalOffset, |
duke@435 | 1910 | "CMSIncrementalOffset"); |
jmasa@445 | 1911 | status = status && verify_percentage(CMSExpAvgFactor, |
duke@435 | 1912 | "CMSExpAvgFactor"); |
duke@435 | 1913 | // If it was not set on the command line, set |
duke@435 | 1914 | // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. |
duke@435 | 1915 | if (CMSInitiatingOccupancyFraction < 0) { |
duke@435 | 1916 | FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); |
duke@435 | 1917 | } |
duke@435 | 1918 | } |
duke@435 | 1919 | } |
duke@435 | 1920 | |
duke@435 | 1921 | // CMS space iteration, which FLSVerifyAllHeapreferences entails, |
duke@435 | 1922 | // insists that we hold the requisite locks so that the iteration is |
duke@435 | 1923 | // MT-safe. For the verification at start-up and shut-down, we don't |
duke@435 | 1924 | // yet have a good way of acquiring and releasing these locks, |
duke@435 | 1925 | // which are not visible at the CollectedHeap level. We want to |
duke@435 | 1926 | // be able to acquire these locks and then do the iteration rather |
duke@435 | 1927 | // than just disable the lock verification. This will be fixed under |
duke@435 | 1928 | // bug 4788986. |
duke@435 | 1929 | if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { |
duke@435 | 1930 | if (VerifyGCStartAt == 0) { |
duke@435 | 1931 | warning("Heap verification at start-up disabled " |
duke@435 | 1932 | "(due to current incompatibility with FLSVerifyAllHeapReferences)"); |
duke@435 | 1933 | VerifyGCStartAt = 1; // Disable verification at start-up |
duke@435 | 1934 | } |
duke@435 | 1935 | if (VerifyBeforeExit) { |
duke@435 | 1936 | warning("Heap verification at shutdown disabled " |
duke@435 | 1937 | "(due to current incompatibility with FLSVerifyAllHeapReferences)"); |
duke@435 | 1938 | VerifyBeforeExit = false; // Disable verification at shutdown |
duke@435 | 1939 | } |
duke@435 | 1940 | } |
duke@435 | 1941 | |
duke@435 | 1942 | // Note: only executed in non-PRODUCT mode |
duke@435 | 1943 | if (!UseAsyncConcMarkSweepGC && |
duke@435 | 1944 | (ExplicitGCInvokesConcurrent || |
duke@435 | 1945 | ExplicitGCInvokesConcurrentAndUnloadsClasses)) { |
duke@435 | 1946 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1947 | "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
duke@435 | 1948 | " with -UseAsyncConcMarkSweepGC"); |
duke@435 | 1949 | status = false; |
duke@435 | 1950 | } |
duke@435 | 1951 | |
johnc@2494 | 1952 | #ifndef SERIALGC |
tonyp@1718 | 1953 | if (UseG1GC) { |
tonyp@1718 | 1954 | status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
tonyp@1718 | 1955 | "InitiatingHeapOccupancyPercent"); |
johnc@2494 | 1956 | status = status && verify_min_value(G1RefProcDrainInterval, 1, |
johnc@2494 | 1957 | "G1RefProcDrainInterval"); |
johnc@2494 | 1958 | status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
johnc@2494 | 1959 | "G1ConcMarkStepDurationMillis"); |
tonyp@1718 | 1960 | } |
johnc@2494 | 1961 | #endif |
tonyp@1718 | 1962 | |
johnc@1679 | 1963 | status = status && verify_interval(RefDiscoveryPolicy, |
johnc@1679 | 1964 | ReferenceProcessor::DiscoveryPolicyMin, |
johnc@1679 | 1965 | ReferenceProcessor::DiscoveryPolicyMax, |
johnc@1679 | 1966 | "RefDiscoveryPolicy"); |
johnc@1679 | 1967 | |
johnc@1679 | 1968 | // Limit the lower bound of this flag to 1 as it is used in a division |
johnc@1679 | 1969 | // expression. |
johnc@1679 | 1970 | status = status && verify_interval(TLABWasteTargetPercent, |
johnc@1679 | 1971 | 1, 100, "TLABWasteTargetPercent"); |
johnc@1679 | 1972 | |
kvn@1926 | 1973 | status = status && verify_object_alignment(); |
kvn@1926 | 1974 | |
duke@435 | 1975 | return status; |
duke@435 | 1976 | } |
duke@435 | 1977 | |
duke@435 | 1978 | bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, |
duke@435 | 1979 | const char* option_type) { |
duke@435 | 1980 | if (ignore) return false; |
duke@435 | 1981 | |
duke@435 | 1982 | const char* spacer = " "; |
duke@435 | 1983 | if (option_type == NULL) { |
duke@435 | 1984 | option_type = ++spacer; // Set both to the empty string. |
duke@435 | 1985 | } |
duke@435 | 1986 | |
duke@435 | 1987 | if (os::obsolete_option(option)) { |
duke@435 | 1988 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1989 | "Obsolete %s%soption: %s\n", option_type, spacer, |
duke@435 | 1990 | option->optionString); |
duke@435 | 1991 | return false; |
duke@435 | 1992 | } else { |
duke@435 | 1993 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1994 | "Unrecognized %s%soption: %s\n", option_type, spacer, |
duke@435 | 1995 | option->optionString); |
duke@435 | 1996 | return true; |
duke@435 | 1997 | } |
duke@435 | 1998 | } |
duke@435 | 1999 | |
duke@435 | 2000 | static const char* user_assertion_options[] = { |
duke@435 | 2001 | "-da", "-ea", "-disableassertions", "-enableassertions", 0 |
duke@435 | 2002 | }; |
duke@435 | 2003 | |
duke@435 | 2004 | static const char* system_assertion_options[] = { |
duke@435 | 2005 | "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 |
duke@435 | 2006 | }; |
duke@435 | 2007 | |
duke@435 | 2008 | // Return true if any of the strings in null-terminated array 'names' matches. |
duke@435 | 2009 | // If tail_allowed is true, then the tail must begin with a colon; otherwise, |
duke@435 | 2010 | // the option must match exactly. |
duke@435 | 2011 | static bool match_option(const JavaVMOption* option, const char** names, const char** tail, |
duke@435 | 2012 | bool tail_allowed) { |
duke@435 | 2013 | for (/* empty */; *names != NULL; ++names) { |
duke@435 | 2014 | if (match_option(option, *names, tail)) { |
duke@435 | 2015 | if (**tail == '\0' || tail_allowed && **tail == ':') { |
duke@435 | 2016 | return true; |
duke@435 | 2017 | } |
duke@435 | 2018 | } |
duke@435 | 2019 | } |
duke@435 | 2020 | return false; |
duke@435 | 2021 | } |
duke@435 | 2022 | |
jmasa@1719 | 2023 | bool Arguments::parse_uintx(const char* value, |
jmasa@1719 | 2024 | uintx* uintx_arg, |
jmasa@1719 | 2025 | uintx min_size) { |
jmasa@1719 | 2026 | |
jmasa@1719 | 2027 | // Check the sign first since atomull() parses only unsigned values. |
jmasa@1719 | 2028 | bool value_is_positive = !(*value == '-'); |
jmasa@1719 | 2029 | |
jmasa@1719 | 2030 | if (value_is_positive) { |
jmasa@1719 | 2031 | julong n; |
jmasa@1719 | 2032 | bool good_return = atomull(value, &n); |
jmasa@1719 | 2033 | if (good_return) { |
jmasa@1719 | 2034 | bool above_minimum = n >= min_size; |
jmasa@1719 | 2035 | bool value_is_too_large = n > max_uintx; |
jmasa@1719 | 2036 | |
jmasa@1719 | 2037 | if (above_minimum && !value_is_too_large) { |
jmasa@1719 | 2038 | *uintx_arg = n; |
jmasa@1719 | 2039 | return true; |
jmasa@1719 | 2040 | } |
jmasa@1719 | 2041 | } |
jmasa@1719 | 2042 | } |
jmasa@1719 | 2043 | return false; |
jmasa@1719 | 2044 | } |
jmasa@1719 | 2045 | |
duke@435 | 2046 | Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
swamyv@924 | 2047 | julong* long_arg, |
swamyv@924 | 2048 | julong min_size) { |
swamyv@924 | 2049 | if (!atomull(s, long_arg)) return arg_unreadable; |
duke@435 | 2050 | return check_memory_size(*long_arg, min_size); |
duke@435 | 2051 | } |
duke@435 | 2052 | |
duke@435 | 2053 | // Parse JavaVMInitArgs structure |
duke@435 | 2054 | |
duke@435 | 2055 | jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { |
duke@435 | 2056 | // For components of the system classpath. |
duke@435 | 2057 | SysClassPath scp(Arguments::get_sysclasspath()); |
duke@435 | 2058 | bool scp_assembly_required = false; |
duke@435 | 2059 | |
duke@435 | 2060 | // Save default settings for some mode flags |
duke@435 | 2061 | Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; |
duke@435 | 2062 | Arguments::_UseOnStackReplacement = UseOnStackReplacement; |
duke@435 | 2063 | Arguments::_ClipInlining = ClipInlining; |
duke@435 | 2064 | Arguments::_BackgroundCompilation = BackgroundCompilation; |
duke@435 | 2065 | |
duke@435 | 2066 | // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
duke@435 | 2067 | jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); |
duke@435 | 2068 | if (result != JNI_OK) { |
duke@435 | 2069 | return result; |
duke@435 | 2070 | } |
duke@435 | 2071 | |
duke@435 | 2072 | // Parse JavaVMInitArgs structure passed in |
duke@435 | 2073 | result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); |
duke@435 | 2074 | if (result != JNI_OK) { |
duke@435 | 2075 | return result; |
duke@435 | 2076 | } |
duke@435 | 2077 | |
phh@966 | 2078 | if (AggressiveOpts) { |
phh@966 | 2079 | // Insert alt-rt.jar between user-specified bootclasspath |
phh@966 | 2080 | // prefix and the default bootclasspath. os::set_boot_path() |
phh@966 | 2081 | // uses meta_index_dir as the default bootclasspath directory. |
phh@966 | 2082 | const char* altclasses_jar = "alt-rt.jar"; |
phh@966 | 2083 | size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
phh@966 | 2084 | strlen(altclasses_jar); |
phh@966 | 2085 | char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
phh@966 | 2086 | strcpy(altclasses_path, get_meta_index_dir()); |
phh@966 | 2087 | strcat(altclasses_path, altclasses_jar); |
phh@966 | 2088 | scp.add_suffix_to_prefix(altclasses_path); |
phh@966 | 2089 | scp_assembly_required = true; |
phh@966 | 2090 | FREE_C_HEAP_ARRAY(char, altclasses_path); |
phh@966 | 2091 | } |
phh@966 | 2092 | |
duke@435 | 2093 | // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
duke@435 | 2094 | result = parse_java_options_environment_variable(&scp, &scp_assembly_required); |
duke@435 | 2095 | if (result != JNI_OK) { |
duke@435 | 2096 | return result; |
duke@435 | 2097 | } |
duke@435 | 2098 | |
duke@435 | 2099 | // Do final processing now that all arguments have been parsed |
duke@435 | 2100 | result = finalize_vm_init_args(&scp, scp_assembly_required); |
duke@435 | 2101 | if (result != JNI_OK) { |
duke@435 | 2102 | return result; |
duke@435 | 2103 | } |
duke@435 | 2104 | |
duke@435 | 2105 | return JNI_OK; |
duke@435 | 2106 | } |
duke@435 | 2107 | |
duke@435 | 2108 | jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, |
duke@435 | 2109 | SysClassPath* scp_p, |
duke@435 | 2110 | bool* scp_assembly_required_p, |
duke@435 | 2111 | FlagValueOrigin origin) { |
duke@435 | 2112 | // Remaining part of option string |
duke@435 | 2113 | const char* tail; |
duke@435 | 2114 | |
duke@435 | 2115 | // iterate over arguments |
duke@435 | 2116 | for (int index = 0; index < args->nOptions; index++) { |
duke@435 | 2117 | bool is_absolute_path = false; // for -agentpath vs -agentlib |
duke@435 | 2118 | |
duke@435 | 2119 | const JavaVMOption* option = args->options + index; |
duke@435 | 2120 | |
duke@435 | 2121 | if (!match_option(option, "-Djava.class.path", &tail) && |
duke@435 | 2122 | !match_option(option, "-Dsun.java.command", &tail) && |
duke@435 | 2123 | !match_option(option, "-Dsun.java.launcher", &tail)) { |
duke@435 | 2124 | |
duke@435 | 2125 | // add all jvm options to the jvm_args string. This string |
duke@435 | 2126 | // is used later to set the java.vm.args PerfData string constant. |
duke@435 | 2127 | // the -Djava.class.path and the -Dsun.java.command options are |
duke@435 | 2128 | // omitted from jvm_args string as each have their own PerfData |
duke@435 | 2129 | // string constant object. |
duke@435 | 2130 | build_jvm_args(option->optionString); |
duke@435 | 2131 | } |
duke@435 | 2132 | |
duke@435 | 2133 | // -verbose:[class/gc/jni] |
duke@435 | 2134 | if (match_option(option, "-verbose", &tail)) { |
duke@435 | 2135 | if (!strcmp(tail, ":class") || !strcmp(tail, "")) { |
duke@435 | 2136 | FLAG_SET_CMDLINE(bool, TraceClassLoading, true); |
duke@435 | 2137 | FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); |
duke@435 | 2138 | } else if (!strcmp(tail, ":gc")) { |
duke@435 | 2139 | FLAG_SET_CMDLINE(bool, PrintGC, true); |
duke@435 | 2140 | } else if (!strcmp(tail, ":jni")) { |
duke@435 | 2141 | FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); |
duke@435 | 2142 | } |
duke@435 | 2143 | // -da / -ea / -disableassertions / -enableassertions |
duke@435 | 2144 | // These accept an optional class/package name separated by a colon, e.g., |
duke@435 | 2145 | // -da:java.lang.Thread. |
duke@435 | 2146 | } else if (match_option(option, user_assertion_options, &tail, true)) { |
duke@435 | 2147 | bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' |
duke@435 | 2148 | if (*tail == '\0') { |
duke@435 | 2149 | JavaAssertions::setUserClassDefault(enable); |
duke@435 | 2150 | } else { |
duke@435 | 2151 | assert(*tail == ':', "bogus match by match_option()"); |
duke@435 | 2152 | JavaAssertions::addOption(tail + 1, enable); |
duke@435 | 2153 | } |
duke@435 | 2154 | // -dsa / -esa / -disablesystemassertions / -enablesystemassertions |
duke@435 | 2155 | } else if (match_option(option, system_assertion_options, &tail, false)) { |
duke@435 | 2156 | bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' |
duke@435 | 2157 | JavaAssertions::setSystemClassDefault(enable); |
duke@435 | 2158 | // -bootclasspath: |
duke@435 | 2159 | } else if (match_option(option, "-Xbootclasspath:", &tail)) { |
duke@435 | 2160 | scp_p->reset_path(tail); |
duke@435 | 2161 | *scp_assembly_required_p = true; |
duke@435 | 2162 | // -bootclasspath/a: |
duke@435 | 2163 | } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { |
duke@435 | 2164 | scp_p->add_suffix(tail); |
duke@435 | 2165 | *scp_assembly_required_p = true; |
duke@435 | 2166 | // -bootclasspath/p: |
duke@435 | 2167 | } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { |
duke@435 | 2168 | scp_p->add_prefix(tail); |
duke@435 | 2169 | *scp_assembly_required_p = true; |
duke@435 | 2170 | // -Xrun |
duke@435 | 2171 | } else if (match_option(option, "-Xrun", &tail)) { |
phh@966 | 2172 | if (tail != NULL) { |
duke@435 | 2173 | const char* pos = strchr(tail, ':'); |
duke@435 | 2174 | size_t len = (pos == NULL) ? strlen(tail) : pos - tail; |
duke@435 | 2175 | char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); |
duke@435 | 2176 | name[len] = '\0'; |
duke@435 | 2177 | |
duke@435 | 2178 | char *options = NULL; |
duke@435 | 2179 | if(pos != NULL) { |
duke@435 | 2180 | size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. |
duke@435 | 2181 | options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); |
duke@435 | 2182 | } |
duke@435 | 2183 | #ifdef JVMTI_KERNEL |
duke@435 | 2184 | if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
duke@435 | 2185 | warning("profiling and debugging agents are not supported with Kernel VM"); |
duke@435 | 2186 | } else |
duke@435 | 2187 | #endif // JVMTI_KERNEL |
duke@435 | 2188 | add_init_library(name, options); |
duke@435 | 2189 | } |
duke@435 | 2190 | // -agentlib and -agentpath |
duke@435 | 2191 | } else if (match_option(option, "-agentlib:", &tail) || |
duke@435 | 2192 | (is_absolute_path = match_option(option, "-agentpath:", &tail))) { |
duke@435 | 2193 | if(tail != NULL) { |
duke@435 | 2194 | const char* pos = strchr(tail, '='); |
duke@435 | 2195 | size_t len = (pos == NULL) ? strlen(tail) : pos - tail; |
duke@435 | 2196 | char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); |
duke@435 | 2197 | name[len] = '\0'; |
duke@435 | 2198 | |
duke@435 | 2199 | char *options = NULL; |
duke@435 | 2200 | if(pos != NULL) { |
duke@435 | 2201 | options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); |
duke@435 | 2202 | } |
duke@435 | 2203 | #ifdef JVMTI_KERNEL |
duke@435 | 2204 | if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
duke@435 | 2205 | warning("profiling and debugging agents are not supported with Kernel VM"); |
duke@435 | 2206 | } else |
duke@435 | 2207 | #endif // JVMTI_KERNEL |
duke@435 | 2208 | add_init_agent(name, options, is_absolute_path); |
duke@435 | 2209 | |
duke@435 | 2210 | } |
duke@435 | 2211 | // -javaagent |
duke@435 | 2212 | } else if (match_option(option, "-javaagent:", &tail)) { |
duke@435 | 2213 | if(tail != NULL) { |
duke@435 | 2214 | char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); |
duke@435 | 2215 | add_init_agent("instrument", options, false); |
duke@435 | 2216 | } |
duke@435 | 2217 | // -Xnoclassgc |
duke@435 | 2218 | } else if (match_option(option, "-Xnoclassgc", &tail)) { |
duke@435 | 2219 | FLAG_SET_CMDLINE(bool, ClassUnloading, false); |
duke@435 | 2220 | // -Xincgc: i-CMS |
duke@435 | 2221 | } else if (match_option(option, "-Xincgc", &tail)) { |
duke@435 | 2222 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); |
duke@435 | 2223 | FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); |
duke@435 | 2224 | // -Xnoincgc: no i-CMS |
duke@435 | 2225 | } else if (match_option(option, "-Xnoincgc", &tail)) { |
duke@435 | 2226 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); |
duke@435 | 2227 | FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); |
duke@435 | 2228 | // -Xconcgc |
duke@435 | 2229 | } else if (match_option(option, "-Xconcgc", &tail)) { |
duke@435 | 2230 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); |
duke@435 | 2231 | // -Xnoconcgc |
duke@435 | 2232 | } else if (match_option(option, "-Xnoconcgc", &tail)) { |
duke@435 | 2233 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); |
duke@435 | 2234 | // -Xbatch |
duke@435 | 2235 | } else if (match_option(option, "-Xbatch", &tail)) { |
duke@435 | 2236 | FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); |
duke@435 | 2237 | // -Xmn for compatibility with other JVM vendors |
duke@435 | 2238 | } else if (match_option(option, "-Xmn", &tail)) { |
swamyv@924 | 2239 | julong long_initial_eden_size = 0; |
duke@435 | 2240 | ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
duke@435 | 2241 | if (errcode != arg_in_range) { |
duke@435 | 2242 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2243 | "Invalid initial eden size: %s\n", option->optionString); |
duke@435 | 2244 | describe_range_error(errcode); |
duke@435 | 2245 | return JNI_EINVAL; |
duke@435 | 2246 | } |
phh@1499 | 2247 | FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
phh@1499 | 2248 | FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); |
duke@435 | 2249 | // -Xms |
duke@435 | 2250 | } else if (match_option(option, "-Xms", &tail)) { |
swamyv@924 | 2251 | julong long_initial_heap_size = 0; |
duke@435 | 2252 | ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
duke@435 | 2253 | if (errcode != arg_in_range) { |
duke@435 | 2254 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2255 | "Invalid initial heap size: %s\n", option->optionString); |
duke@435 | 2256 | describe_range_error(errcode); |
duke@435 | 2257 | return JNI_EINVAL; |
duke@435 | 2258 | } |
phh@1499 | 2259 | FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
duke@435 | 2260 | // Currently the minimum size and the initial heap sizes are the same. |
phh@1499 | 2261 | set_min_heap_size(InitialHeapSize); |
duke@435 | 2262 | // -Xmx |
duke@435 | 2263 | } else if (match_option(option, "-Xmx", &tail)) { |
swamyv@924 | 2264 | julong long_max_heap_size = 0; |
duke@435 | 2265 | ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
duke@435 | 2266 | if (errcode != arg_in_range) { |
duke@435 | 2267 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2268 | "Invalid maximum heap size: %s\n", option->optionString); |
duke@435 | 2269 | describe_range_error(errcode); |
duke@435 | 2270 | return JNI_EINVAL; |
duke@435 | 2271 | } |
phh@1499 | 2272 | FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
duke@435 | 2273 | // Xmaxf |
duke@435 | 2274 | } else if (match_option(option, "-Xmaxf", &tail)) { |
duke@435 | 2275 | int maxf = (int)(atof(tail) * 100); |
duke@435 | 2276 | if (maxf < 0 || maxf > 100) { |
duke@435 | 2277 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2278 | "Bad max heap free percentage size: %s\n", |
duke@435 | 2279 | option->optionString); |
duke@435 | 2280 | return JNI_EINVAL; |
duke@435 | 2281 | } else { |
duke@435 | 2282 | FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); |
duke@435 | 2283 | } |
duke@435 | 2284 | // Xminf |
duke@435 | 2285 | } else if (match_option(option, "-Xminf", &tail)) { |
duke@435 | 2286 | int minf = (int)(atof(tail) * 100); |
duke@435 | 2287 | if (minf < 0 || minf > 100) { |
duke@435 | 2288 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2289 | "Bad min heap free percentage size: %s\n", |
duke@435 | 2290 | option->optionString); |
duke@435 | 2291 | return JNI_EINVAL; |
duke@435 | 2292 | } else { |
duke@435 | 2293 | FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); |
duke@435 | 2294 | } |
duke@435 | 2295 | // -Xss |
duke@435 | 2296 | } else if (match_option(option, "-Xss", &tail)) { |
swamyv@924 | 2297 | julong long_ThreadStackSize = 0; |
duke@435 | 2298 | ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
duke@435 | 2299 | if (errcode != arg_in_range) { |
duke@435 | 2300 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2301 | "Invalid thread stack size: %s\n", option->optionString); |
duke@435 | 2302 | describe_range_error(errcode); |
duke@435 | 2303 | return JNI_EINVAL; |
duke@435 | 2304 | } |
duke@435 | 2305 | // Internally track ThreadStackSize in units of 1024 bytes. |
duke@435 | 2306 | FLAG_SET_CMDLINE(intx, ThreadStackSize, |
duke@435 | 2307 | round_to((int)long_ThreadStackSize, K) / K); |
duke@435 | 2308 | // -Xoss |
duke@435 | 2309 | } else if (match_option(option, "-Xoss", &tail)) { |
duke@435 | 2310 | // HotSpot does not have separate native and Java stacks, ignore silently for compatibility |
duke@435 | 2311 | // -Xmaxjitcodesize |
coleenp@2418 | 2312 | } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
coleenp@2418 | 2313 | match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
swamyv@924 | 2314 | julong long_ReservedCodeCacheSize = 0; |
duke@435 | 2315 | ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
swamyv@924 | 2316 | (size_t)InitialCodeCacheSize); |
duke@435 | 2317 | if (errcode != arg_in_range) { |
duke@435 | 2318 | jio_fprintf(defaultStream::error_stream(), |
coleenp@2418 | 2319 | "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
coleenp@2418 | 2320 | option->optionString, InitialCodeCacheSize/K); |
duke@435 | 2321 | describe_range_error(errcode); |
duke@435 | 2322 | return JNI_EINVAL; |
duke@435 | 2323 | } |
duke@435 | 2324 | FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); |
duke@435 | 2325 | // -green |
duke@435 | 2326 | } else if (match_option(option, "-green", &tail)) { |
duke@435 | 2327 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2328 | "Green threads support not available\n"); |
duke@435 | 2329 | return JNI_EINVAL; |
duke@435 | 2330 | // -native |
duke@435 | 2331 | } else if (match_option(option, "-native", &tail)) { |
duke@435 | 2332 | // HotSpot always uses native threads, ignore silently for compatibility |
duke@435 | 2333 | // -Xsqnopause |
duke@435 | 2334 | } else if (match_option(option, "-Xsqnopause", &tail)) { |
duke@435 | 2335 | // EVM option, ignore silently for compatibility |
duke@435 | 2336 | // -Xrs |
duke@435 | 2337 | } else if (match_option(option, "-Xrs", &tail)) { |
duke@435 | 2338 | // Classic/EVM option, new functionality |
duke@435 | 2339 | FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); |
duke@435 | 2340 | } else if (match_option(option, "-Xusealtsigs", &tail)) { |
duke@435 | 2341 | // change default internal VM signals used - lower case for back compat |
duke@435 | 2342 | FLAG_SET_CMDLINE(bool, UseAltSigs, true); |
duke@435 | 2343 | // -Xoptimize |
duke@435 | 2344 | } else if (match_option(option, "-Xoptimize", &tail)) { |
duke@435 | 2345 | // EVM option, ignore silently for compatibility |
duke@435 | 2346 | // -Xprof |
duke@435 | 2347 | } else if (match_option(option, "-Xprof", &tail)) { |
duke@435 | 2348 | #ifndef FPROF_KERNEL |
duke@435 | 2349 | _has_profile = true; |
duke@435 | 2350 | #else // FPROF_KERNEL |
duke@435 | 2351 | // do we have to exit? |
duke@435 | 2352 | warning("Kernel VM does not support flat profiling."); |
duke@435 | 2353 | #endif // FPROF_KERNEL |
duke@435 | 2354 | // -Xaprof |
duke@435 | 2355 | } else if (match_option(option, "-Xaprof", &tail)) { |
duke@435 | 2356 | _has_alloc_profile = true; |
duke@435 | 2357 | // -Xconcurrentio |
duke@435 | 2358 | } else if (match_option(option, "-Xconcurrentio", &tail)) { |
duke@435 | 2359 | FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); |
duke@435 | 2360 | FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); |
duke@435 | 2361 | FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); |
duke@435 | 2362 | FLAG_SET_CMDLINE(bool, UseTLAB, false); |
duke@435 | 2363 | FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation |
duke@435 | 2364 | |
duke@435 | 2365 | // -Xinternalversion |
duke@435 | 2366 | } else if (match_option(option, "-Xinternalversion", &tail)) { |
duke@435 | 2367 | jio_fprintf(defaultStream::output_stream(), "%s\n", |
duke@435 | 2368 | VM_Version::internal_vm_info_string()); |
duke@435 | 2369 | vm_exit(0); |
duke@435 | 2370 | #ifndef PRODUCT |
duke@435 | 2371 | // -Xprintflags |
duke@435 | 2372 | } else if (match_option(option, "-Xprintflags", &tail)) { |
duke@435 | 2373 | CommandLineFlags::printFlags(); |
duke@435 | 2374 | vm_exit(0); |
duke@435 | 2375 | #endif |
duke@435 | 2376 | // -D |
duke@435 | 2377 | } else if (match_option(option, "-D", &tail)) { |
duke@435 | 2378 | if (!add_property(tail)) { |
duke@435 | 2379 | return JNI_ENOMEM; |
duke@435 | 2380 | } |
duke@435 | 2381 | // Out of the box management support |
duke@435 | 2382 | if (match_option(option, "-Dcom.sun.management", &tail)) { |
duke@435 | 2383 | FLAG_SET_CMDLINE(bool, ManagementServer, true); |
duke@435 | 2384 | } |
duke@435 | 2385 | // -Xint |
duke@435 | 2386 | } else if (match_option(option, "-Xint", &tail)) { |
duke@435 | 2387 | set_mode_flags(_int); |
duke@435 | 2388 | // -Xmixed |
duke@435 | 2389 | } else if (match_option(option, "-Xmixed", &tail)) { |
duke@435 | 2390 | set_mode_flags(_mixed); |
duke@435 | 2391 | // -Xcomp |
duke@435 | 2392 | } else if (match_option(option, "-Xcomp", &tail)) { |
duke@435 | 2393 | // for testing the compiler; turn off all flags that inhibit compilation |
duke@435 | 2394 | set_mode_flags(_comp); |
duke@435 | 2395 | |
duke@435 | 2396 | // -Xshare:dump |
duke@435 | 2397 | } else if (match_option(option, "-Xshare:dump", &tail)) { |
duke@435 | 2398 | #ifdef TIERED |
duke@435 | 2399 | FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); |
duke@435 | 2400 | set_mode_flags(_int); // Prevent compilation, which creates objects |
duke@435 | 2401 | #elif defined(COMPILER2) |
duke@435 | 2402 | vm_exit_during_initialization( |
duke@435 | 2403 | "Dumping a shared archive is not supported on the Server JVM.", NULL); |
duke@435 | 2404 | #elif defined(KERNEL) |
duke@435 | 2405 | vm_exit_during_initialization( |
duke@435 | 2406 | "Dumping a shared archive is not supported on the Kernel JVM.", NULL); |
duke@435 | 2407 | #else |
duke@435 | 2408 | FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); |
duke@435 | 2409 | set_mode_flags(_int); // Prevent compilation, which creates objects |
duke@435 | 2410 | #endif |
duke@435 | 2411 | // -Xshare:on |
duke@435 | 2412 | } else if (match_option(option, "-Xshare:on", &tail)) { |
duke@435 | 2413 | FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); |
duke@435 | 2414 | FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); |
duke@435 | 2415 | #ifdef TIERED |
duke@435 | 2416 | FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true); |
duke@435 | 2417 | #endif // TIERED |
duke@435 | 2418 | // -Xshare:auto |
duke@435 | 2419 | } else if (match_option(option, "-Xshare:auto", &tail)) { |
duke@435 | 2420 | FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); |
duke@435 | 2421 | FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); |
duke@435 | 2422 | // -Xshare:off |
duke@435 | 2423 | } else if (match_option(option, "-Xshare:off", &tail)) { |
duke@435 | 2424 | FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); |
duke@435 | 2425 | FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); |
duke@435 | 2426 | |
duke@435 | 2427 | // -Xverify |
duke@435 | 2428 | } else if (match_option(option, "-Xverify", &tail)) { |
duke@435 | 2429 | if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { |
duke@435 | 2430 | FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); |
duke@435 | 2431 | FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); |
duke@435 | 2432 | } else if (strcmp(tail, ":remote") == 0) { |
duke@435 | 2433 | FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); |
duke@435 | 2434 | FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); |
duke@435 | 2435 | } else if (strcmp(tail, ":none") == 0) { |
duke@435 | 2436 | FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); |
duke@435 | 2437 | FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); |
duke@435 | 2438 | } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { |
duke@435 | 2439 | return JNI_EINVAL; |
duke@435 | 2440 | } |
duke@435 | 2441 | // -Xdebug |
duke@435 | 2442 | } else if (match_option(option, "-Xdebug", &tail)) { |
duke@435 | 2443 | // note this flag has been used, then ignore |
duke@435 | 2444 | set_xdebug_mode(true); |
duke@435 | 2445 | // -Xnoagent |
duke@435 | 2446 | } else if (match_option(option, "-Xnoagent", &tail)) { |
duke@435 | 2447 | // For compatibility with classic. HotSpot refuses to load the old style agent.dll. |
duke@435 | 2448 | } else if (match_option(option, "-Xboundthreads", &tail)) { |
duke@435 | 2449 | // Bind user level threads to kernel threads (Solaris only) |
duke@435 | 2450 | FLAG_SET_CMDLINE(bool, UseBoundThreads, true); |
duke@435 | 2451 | } else if (match_option(option, "-Xloggc:", &tail)) { |
duke@435 | 2452 | // Redirect GC output to the file. -Xloggc:<filename> |
duke@435 | 2453 | // ostream_init_log(), when called will use this filename |
duke@435 | 2454 | // to initialize a fileStream. |
duke@435 | 2455 | _gc_log_filename = strdup(tail); |
duke@435 | 2456 | FLAG_SET_CMDLINE(bool, PrintGC, true); |
duke@435 | 2457 | FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); |
duke@435 | 2458 | FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); |
duke@435 | 2459 | |
duke@435 | 2460 | // JNI hooks |
duke@435 | 2461 | } else if (match_option(option, "-Xcheck", &tail)) { |
duke@435 | 2462 | if (!strcmp(tail, ":jni")) { |
duke@435 | 2463 | CheckJNICalls = true; |
duke@435 | 2464 | } else if (is_bad_option(option, args->ignoreUnrecognized, |
duke@435 | 2465 | "check")) { |
duke@435 | 2466 | return JNI_EINVAL; |
duke@435 | 2467 | } |
duke@435 | 2468 | } else if (match_option(option, "vfprintf", &tail)) { |
duke@435 | 2469 | _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); |
duke@435 | 2470 | } else if (match_option(option, "exit", &tail)) { |
duke@435 | 2471 | _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); |
duke@435 | 2472 | } else if (match_option(option, "abort", &tail)) { |
duke@435 | 2473 | _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); |
duke@435 | 2474 | // -XX:+AggressiveHeap |
duke@435 | 2475 | } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { |
duke@435 | 2476 | |
duke@435 | 2477 | // This option inspects the machine and attempts to set various |
duke@435 | 2478 | // parameters to be optimal for long-running, memory allocation |
duke@435 | 2479 | // intensive jobs. It is intended for machines with large |
duke@435 | 2480 | // amounts of cpu and memory. |
duke@435 | 2481 | |
duke@435 | 2482 | // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit |
duke@435 | 2483 | // VM, but we may not be able to represent the total physical memory |
duke@435 | 2484 | // available (like having 8gb of memory on a box but using a 32bit VM). |
duke@435 | 2485 | // Thus, we need to make sure we're using a julong for intermediate |
duke@435 | 2486 | // calculations. |
duke@435 | 2487 | julong initHeapSize; |
duke@435 | 2488 | julong total_memory = os::physical_memory(); |
duke@435 | 2489 | |
duke@435 | 2490 | if (total_memory < (julong)256*M) { |
duke@435 | 2491 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2492 | "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); |
duke@435 | 2493 | vm_exit(1); |
duke@435 | 2494 | } |
duke@435 | 2495 | |
duke@435 | 2496 | // The heap size is half of available memory, or (at most) |
duke@435 | 2497 | // all of possible memory less 160mb (leaving room for the OS |
duke@435 | 2498 | // when using ISM). This is the maximum; because adaptive sizing |
duke@435 | 2499 | // is turned on below, the actual space used may be smaller. |
duke@435 | 2500 | |
duke@435 | 2501 | initHeapSize = MIN2(total_memory / (julong)2, |
duke@435 | 2502 | total_memory - (julong)160*M); |
duke@435 | 2503 | |
duke@435 | 2504 | // Make sure that if we have a lot of memory we cap the 32 bit |
duke@435 | 2505 | // process space. The 64bit VM version of this function is a nop. |
duke@435 | 2506 | initHeapSize = os::allocatable_physical_memory(initHeapSize); |
duke@435 | 2507 | |
duke@435 | 2508 | // The perm gen is separate but contiguous with the |
duke@435 | 2509 | // object heap (and is reserved with it) so subtract it |
duke@435 | 2510 | // from the heap size. |
duke@435 | 2511 | if (initHeapSize > MaxPermSize) { |
duke@435 | 2512 | initHeapSize = initHeapSize - MaxPermSize; |
duke@435 | 2513 | } else { |
duke@435 | 2514 | warning("AggressiveHeap and MaxPermSize values may conflict"); |
duke@435 | 2515 | } |
duke@435 | 2516 | |
duke@435 | 2517 | if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
duke@435 | 2518 | FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); |
phh@1499 | 2519 | FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
duke@435 | 2520 | // Currently the minimum size and the initial heap sizes are the same. |
phh@1499 | 2521 | set_min_heap_size(initHeapSize); |
duke@435 | 2522 | } |
duke@435 | 2523 | if (FLAG_IS_DEFAULT(NewSize)) { |
duke@435 | 2524 | // Make the young generation 3/8ths of the total heap. |
duke@435 | 2525 | FLAG_SET_CMDLINE(uintx, NewSize, |
duke@435 | 2526 | ((julong)MaxHeapSize / (julong)8) * (julong)3); |
duke@435 | 2527 | FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); |
duke@435 | 2528 | } |
duke@435 | 2529 | |
duke@435 | 2530 | FLAG_SET_DEFAULT(UseLargePages, true); |
duke@435 | 2531 | |
duke@435 | 2532 | // Increase some data structure sizes for efficiency |
duke@435 | 2533 | FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); |
duke@435 | 2534 | FLAG_SET_CMDLINE(bool, ResizeTLAB, false); |
duke@435 | 2535 | FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); |
duke@435 | 2536 | |
duke@435 | 2537 | // See the OldPLABSize comment below, but replace 'after promotion' |
duke@435 | 2538 | // with 'after copying'. YoungPLABSize is the size of the survivor |
duke@435 | 2539 | // space per-gc-thread buffers. The default is 4kw. |
duke@435 | 2540 | FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words |
duke@435 | 2541 | |
duke@435 | 2542 | // OldPLABSize is the size of the buffers in the old gen that |
duke@435 | 2543 | // UseParallelGC uses to promote live data that doesn't fit in the |
duke@435 | 2544 | // survivor spaces. At any given time, there's one for each gc thread. |
duke@435 | 2545 | // The default size is 1kw. These buffers are rarely used, since the |
duke@435 | 2546 | // survivor spaces are usually big enough. For specjbb, however, there |
duke@435 | 2547 | // are occasions when there's lots of live data in the young gen |
duke@435 | 2548 | // and we end up promoting some of it. We don't have a definite |
duke@435 | 2549 | // explanation for why bumping OldPLABSize helps, but the theory |
duke@435 | 2550 | // is that a bigger PLAB results in retaining something like the |
duke@435 | 2551 | // original allocation order after promotion, which improves mutator |
duke@435 | 2552 | // locality. A minor effect may be that larger PLABs reduce the |
duke@435 | 2553 | // number of PLAB allocation events during gc. The value of 8kw |
duke@435 | 2554 | // was arrived at by experimenting with specjbb. |
duke@435 | 2555 | FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words |
duke@435 | 2556 | |
duke@435 | 2557 | // CompilationPolicyChoice=0 causes the server compiler to adopt |
duke@435 | 2558 | // a more conservative which-method-do-I-compile policy when one |
duke@435 | 2559 | // of the counters maintained by the interpreter trips. The |
duke@435 | 2560 | // result is reduced startup time and improved specjbb and |
duke@435 | 2561 | // alacrity performance. Zero is the default, but we set it |
duke@435 | 2562 | // explicitly here in case the default changes. |
duke@435 | 2563 | // See runtime/compilationPolicy.*. |
duke@435 | 2564 | FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); |
duke@435 | 2565 | |
duke@435 | 2566 | // Enable parallel GC and adaptive generation sizing |
duke@435 | 2567 | FLAG_SET_CMDLINE(bool, UseParallelGC, true); |
jmasa@445 | 2568 | FLAG_SET_DEFAULT(ParallelGCThreads, |
jmasa@445 | 2569 | Abstract_VM_Version::parallel_worker_threads()); |
duke@435 | 2570 | |
duke@435 | 2571 | // Encourage steady state memory management |
duke@435 | 2572 | FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); |
duke@435 | 2573 | |
duke@435 | 2574 | // This appears to improve mutator locality |
duke@435 | 2575 | FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
duke@435 | 2576 | |
duke@435 | 2577 | // Get around early Solaris scheduling bug |
duke@435 | 2578 | // (affinity vs other jobs on system) |
duke@435 | 2579 | // but disallow DR and offlining (5008695). |
duke@435 | 2580 | FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); |
duke@435 | 2581 | |
duke@435 | 2582 | } else if (match_option(option, "-XX:+NeverTenure", &tail)) { |
duke@435 | 2583 | // The last option must always win. |
duke@435 | 2584 | FLAG_SET_CMDLINE(bool, AlwaysTenure, false); |
duke@435 | 2585 | FLAG_SET_CMDLINE(bool, NeverTenure, true); |
duke@435 | 2586 | } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { |
duke@435 | 2587 | // The last option must always win. |
duke@435 | 2588 | FLAG_SET_CMDLINE(bool, NeverTenure, false); |
duke@435 | 2589 | FLAG_SET_CMDLINE(bool, AlwaysTenure, true); |
duke@435 | 2590 | } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || |
duke@435 | 2591 | match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { |
duke@435 | 2592 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2593 | "Please use CMSClassUnloadingEnabled in place of " |
duke@435 | 2594 | "CMSPermGenSweepingEnabled in the future\n"); |
duke@435 | 2595 | } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { |
duke@435 | 2596 | FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); |
duke@435 | 2597 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2598 | "Please use -XX:+UseGCOverheadLimit in place of " |
duke@435 | 2599 | "-XX:+UseGCTimeLimit in the future\n"); |
duke@435 | 2600 | } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { |
duke@435 | 2601 | FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); |
duke@435 | 2602 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2603 | "Please use -XX:-UseGCOverheadLimit in place of " |
duke@435 | 2604 | "-XX:-UseGCTimeLimit in the future\n"); |
duke@435 | 2605 | // The TLE options are for compatibility with 1.3 and will be |
duke@435 | 2606 | // removed without notice in a future release. These options |
duke@435 | 2607 | // are not to be documented. |
duke@435 | 2608 | } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { |
duke@435 | 2609 | // No longer used. |
duke@435 | 2610 | } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { |
duke@435 | 2611 | FLAG_SET_CMDLINE(bool, ResizeTLAB, true); |
duke@435 | 2612 | } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { |
duke@435 | 2613 | FLAG_SET_CMDLINE(bool, ResizeTLAB, false); |
duke@435 | 2614 | } else if (match_option(option, "-XX:+PrintTLE", &tail)) { |
duke@435 | 2615 | FLAG_SET_CMDLINE(bool, PrintTLAB, true); |
duke@435 | 2616 | } else if (match_option(option, "-XX:-PrintTLE", &tail)) { |
duke@435 | 2617 | FLAG_SET_CMDLINE(bool, PrintTLAB, false); |
duke@435 | 2618 | } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { |
duke@435 | 2619 | // No longer used. |
duke@435 | 2620 | } else if (match_option(option, "-XX:TLESize=", &tail)) { |
swamyv@924 | 2621 | julong long_tlab_size = 0; |
duke@435 | 2622 | ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
duke@435 | 2623 | if (errcode != arg_in_range) { |
duke@435 | 2624 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2625 | "Invalid TLAB size: %s\n", option->optionString); |
duke@435 | 2626 | describe_range_error(errcode); |
duke@435 | 2627 | return JNI_EINVAL; |
duke@435 | 2628 | } |
duke@435 | 2629 | FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); |
duke@435 | 2630 | } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { |
duke@435 | 2631 | // No longer used. |
duke@435 | 2632 | } else if (match_option(option, "-XX:+UseTLE", &tail)) { |
duke@435 | 2633 | FLAG_SET_CMDLINE(bool, UseTLAB, true); |
duke@435 | 2634 | } else if (match_option(option, "-XX:-UseTLE", &tail)) { |
duke@435 | 2635 | FLAG_SET_CMDLINE(bool, UseTLAB, false); |
duke@435 | 2636 | SOLARIS_ONLY( |
duke@435 | 2637 | } else if (match_option(option, "-XX:+UsePermISM", &tail)) { |
duke@435 | 2638 | warning("-XX:+UsePermISM is obsolete."); |
duke@435 | 2639 | FLAG_SET_CMDLINE(bool, UseISM, true); |
duke@435 | 2640 | } else if (match_option(option, "-XX:-UsePermISM", &tail)) { |
duke@435 | 2641 | FLAG_SET_CMDLINE(bool, UseISM, false); |
duke@435 | 2642 | ) |
duke@435 | 2643 | } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { |
duke@435 | 2644 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); |
duke@435 | 2645 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); |
duke@435 | 2646 | } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { |
duke@435 | 2647 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); |
duke@435 | 2648 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); |
duke@435 | 2649 | } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { |
duke@435 | 2650 | #ifdef SOLARIS |
duke@435 | 2651 | FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
duke@435 | 2652 | FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); |
duke@435 | 2653 | FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); |
duke@435 | 2654 | FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); |
duke@435 | 2655 | #else // ndef SOLARIS |
duke@435 | 2656 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2657 | "ExtendedDTraceProbes flag is only applicable on Solaris\n"); |
duke@435 | 2658 | return JNI_EINVAL; |
duke@435 | 2659 | #endif // ndef SOLARIS |
duke@435 | 2660 | #ifdef ASSERT |
ysr@1580 | 2661 | } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
duke@435 | 2662 | FLAG_SET_CMDLINE(bool, FullGCALot, true); |
duke@435 | 2663 | // disable scavenge before parallel mark-compact |
duke@435 | 2664 | FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
duke@435 | 2665 | #endif |
ysr@1580 | 2666 | } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
duke@435 | 2667 | julong cms_blocks_to_claim = (julong)atol(tail); |
duke@435 | 2668 | FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
duke@435 | 2669 | jio_fprintf(defaultStream::error_stream(), |
ysr@1580 | 2670 | "Please use -XX:OldPLABSize in place of " |
ysr@1580 | 2671 | "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
ysr@1580 | 2672 | } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
ysr@1580 | 2673 | julong cms_blocks_to_claim = (julong)atol(tail); |
ysr@1580 | 2674 | FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
ysr@1580 | 2675 | jio_fprintf(defaultStream::error_stream(), |
ysr@1580 | 2676 | "Please use -XX:OldPLABSize in place of " |
duke@435 | 2677 | "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
ysr@1580 | 2678 | } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
swamyv@924 | 2679 | julong old_plab_size = 0; |
duke@435 | 2680 | ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
duke@435 | 2681 | if (errcode != arg_in_range) { |
duke@435 | 2682 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2683 | "Invalid old PLAB size: %s\n", option->optionString); |
duke@435 | 2684 | describe_range_error(errcode); |
duke@435 | 2685 | return JNI_EINVAL; |
duke@435 | 2686 | } |
swamyv@924 | 2687 | FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
duke@435 | 2688 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2689 | "Please use -XX:OldPLABSize in place of " |
duke@435 | 2690 | "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); |
ysr@1580 | 2691 | } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
swamyv@924 | 2692 | julong young_plab_size = 0; |
duke@435 | 2693 | ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
duke@435 | 2694 | if (errcode != arg_in_range) { |
duke@435 | 2695 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2696 | "Invalid young PLAB size: %s\n", option->optionString); |
duke@435 | 2697 | describe_range_error(errcode); |
duke@435 | 2698 | return JNI_EINVAL; |
duke@435 | 2699 | } |
swamyv@924 | 2700 | FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
duke@435 | 2701 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2702 | "Please use -XX:YoungPLABSize in place of " |
duke@435 | 2703 | "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); |
jmasa@1719 | 2704 | } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
jmasa@1719 | 2705 | match_option(option, "-XX:G1MarkStackSize=", &tail)) { |
jmasa@1719 | 2706 | julong stack_size = 0; |
jmasa@1719 | 2707 | ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); |
jmasa@1719 | 2708 | if (errcode != arg_in_range) { |
jmasa@1719 | 2709 | jio_fprintf(defaultStream::error_stream(), |
jmasa@1719 | 2710 | "Invalid mark stack size: %s\n", option->optionString); |
jmasa@1719 | 2711 | describe_range_error(errcode); |
jmasa@1719 | 2712 | return JNI_EINVAL; |
jmasa@1719 | 2713 | } |
jmasa@1719 | 2714 | FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); |
jmasa@1719 | 2715 | } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { |
jmasa@1719 | 2716 | julong max_stack_size = 0; |
jmasa@1719 | 2717 | ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); |
jmasa@1719 | 2718 | if (errcode != arg_in_range) { |
jmasa@1719 | 2719 | jio_fprintf(defaultStream::error_stream(), |
jmasa@1719 | 2720 | "Invalid maximum mark stack size: %s\n", |
jmasa@1719 | 2721 | option->optionString); |
jmasa@1719 | 2722 | describe_range_error(errcode); |
jmasa@1719 | 2723 | return JNI_EINVAL; |
jmasa@1719 | 2724 | } |
jmasa@1719 | 2725 | FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); |
jmasa@1719 | 2726 | } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || |
jmasa@1719 | 2727 | match_option(option, "-XX:ParallelCMSThreads=", &tail)) { |
jmasa@1719 | 2728 | uintx conc_threads = 0; |
jmasa@1719 | 2729 | if (!parse_uintx(tail, &conc_threads, 1)) { |
jmasa@1719 | 2730 | jio_fprintf(defaultStream::error_stream(), |
jmasa@1719 | 2731 | "Invalid concurrent threads: %s\n", option->optionString); |
jmasa@1719 | 2732 | return JNI_EINVAL; |
jmasa@1719 | 2733 | } |
jmasa@1719 | 2734 | FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); |
ysr@1580 | 2735 | } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
duke@435 | 2736 | // Skip -XX:Flags= since that case has already been handled |
duke@435 | 2737 | if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { |
duke@435 | 2738 | if (!process_argument(tail, args->ignoreUnrecognized, origin)) { |
duke@435 | 2739 | return JNI_EINVAL; |
duke@435 | 2740 | } |
duke@435 | 2741 | } |
duke@435 | 2742 | // Unknown option |
duke@435 | 2743 | } else if (is_bad_option(option, args->ignoreUnrecognized)) { |
duke@435 | 2744 | return JNI_ERR; |
duke@435 | 2745 | } |
duke@435 | 2746 | } |
xlu@884 | 2747 | // Change the default value for flags which have different default values |
xlu@884 | 2748 | // when working with older JDKs. |
xlu@884 | 2749 | if (JDK_Version::current().compare_major(6) <= 0 && |
xlu@884 | 2750 | FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
xlu@884 | 2751 | FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
xlu@884 | 2752 | } |
aph@2034 | 2753 | #ifdef LINUX |
aph@2034 | 2754 | if (JDK_Version::current().compare_major(6) <= 0 && |
aph@2034 | 2755 | FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
aph@2034 | 2756 | FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
aph@2034 | 2757 | } |
aph@2034 | 2758 | #endif // LINUX |
duke@435 | 2759 | return JNI_OK; |
duke@435 | 2760 | } |
duke@435 | 2761 | |
duke@435 | 2762 | jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { |
duke@435 | 2763 | // This must be done after all -D arguments have been processed. |
duke@435 | 2764 | scp_p->expand_endorsed(); |
duke@435 | 2765 | |
duke@435 | 2766 | if (scp_assembly_required || scp_p->get_endorsed() != NULL) { |
duke@435 | 2767 | // Assemble the bootclasspath elements into the final path. |
duke@435 | 2768 | Arguments::set_sysclasspath(scp_p->combined_path()); |
duke@435 | 2769 | } |
duke@435 | 2770 | |
duke@435 | 2771 | // This must be done after all arguments have been processed. |
duke@435 | 2772 | // java_compiler() true means set to "NONE" or empty. |
duke@435 | 2773 | if (java_compiler() && !xdebug_mode()) { |
duke@435 | 2774 | // For backwards compatibility, we switch to interpreted mode if |
duke@435 | 2775 | // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was |
duke@435 | 2776 | // not specified. |
duke@435 | 2777 | set_mode_flags(_int); |
duke@435 | 2778 | } |
duke@435 | 2779 | if (CompileThreshold == 0) { |
duke@435 | 2780 | set_mode_flags(_int); |
duke@435 | 2781 | } |
duke@435 | 2782 | |
duke@435 | 2783 | #ifndef COMPILER2 |
duke@435 | 2784 | // Don't degrade server performance for footprint |
duke@435 | 2785 | if (FLAG_IS_DEFAULT(UseLargePages) && |
duke@435 | 2786 | MaxHeapSize < LargePageHeapSizeThreshold) { |
duke@435 | 2787 | // No need for large granularity pages w/small heaps. |
duke@435 | 2788 | // Note that large pages are enabled/disabled for both the |
duke@435 | 2789 | // Java heap and the code cache. |
duke@435 | 2790 | FLAG_SET_DEFAULT(UseLargePages, false); |
duke@435 | 2791 | SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); |
duke@435 | 2792 | SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); |
duke@435 | 2793 | } |
ysr@777 | 2794 | |
kvn@1686 | 2795 | // Tiered compilation is undefined with C1. |
kvn@1686 | 2796 | TieredCompilation = false; |
duke@435 | 2797 | #else |
duke@435 | 2798 | if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { |
duke@435 | 2799 | FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); |
duke@435 | 2800 | } |
duke@435 | 2801 | #endif |
duke@435 | 2802 | |
bobv@2036 | 2803 | // If we are running in a headless jre, force java.awt.headless property |
bobv@2036 | 2804 | // to be true unless the property has already been set. |
bobv@2036 | 2805 | // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
bobv@2036 | 2806 | if (os::is_headless_jre()) { |
bobv@2036 | 2807 | const char* headless = Arguments::get_property("java.awt.headless"); |
bobv@2036 | 2808 | if (headless == NULL) { |
bobv@2036 | 2809 | char envbuffer[128]; |
bobv@2036 | 2810 | if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
bobv@2036 | 2811 | if (!add_property("java.awt.headless=true")) { |
bobv@2036 | 2812 | return JNI_ENOMEM; |
bobv@2036 | 2813 | } |
bobv@2036 | 2814 | } else { |
bobv@2036 | 2815 | char buffer[256]; |
bobv@2036 | 2816 | strcpy(buffer, "java.awt.headless="); |
bobv@2036 | 2817 | strcat(buffer, envbuffer); |
bobv@2036 | 2818 | if (!add_property(buffer)) { |
bobv@2036 | 2819 | return JNI_ENOMEM; |
bobv@2036 | 2820 | } |
bobv@2036 | 2821 | } |
bobv@2036 | 2822 | } |
bobv@2036 | 2823 | } |
bobv@2036 | 2824 | |
duke@435 | 2825 | if (!check_vm_args_consistency()) { |
duke@435 | 2826 | return JNI_ERR; |
duke@435 | 2827 | } |
duke@435 | 2828 | |
duke@435 | 2829 | return JNI_OK; |
duke@435 | 2830 | } |
duke@435 | 2831 | |
duke@435 | 2832 | jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { |
duke@435 | 2833 | return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, |
duke@435 | 2834 | scp_assembly_required_p); |
duke@435 | 2835 | } |
duke@435 | 2836 | |
duke@435 | 2837 | jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { |
duke@435 | 2838 | return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, |
duke@435 | 2839 | scp_assembly_required_p); |
duke@435 | 2840 | } |
duke@435 | 2841 | |
duke@435 | 2842 | jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { |
duke@435 | 2843 | const int N_MAX_OPTIONS = 64; |
duke@435 | 2844 | const int OPTION_BUFFER_SIZE = 1024; |
duke@435 | 2845 | char buffer[OPTION_BUFFER_SIZE]; |
duke@435 | 2846 | |
duke@435 | 2847 | // The variable will be ignored if it exceeds the length of the buffer. |
duke@435 | 2848 | // Don't check this variable if user has special privileges |
duke@435 | 2849 | // (e.g. unix su command). |
duke@435 | 2850 | if (os::getenv(name, buffer, sizeof(buffer)) && |
duke@435 | 2851 | !os::have_special_privileges()) { |
duke@435 | 2852 | JavaVMOption options[N_MAX_OPTIONS]; // Construct option array |
duke@435 | 2853 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2854 | "Picked up %s: %s\n", name, buffer); |
duke@435 | 2855 | char* rd = buffer; // pointer to the input string (rd) |
duke@435 | 2856 | int i; |
duke@435 | 2857 | for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string |
duke@435 | 2858 | while (isspace(*rd)) rd++; // skip whitespace |
duke@435 | 2859 | if (*rd == 0) break; // we re done when the input string is read completely |
duke@435 | 2860 | |
duke@435 | 2861 | // The output, option string, overwrites the input string. |
duke@435 | 2862 | // Because of quoting, the pointer to the option string (wrt) may lag the pointer to |
duke@435 | 2863 | // input string (rd). |
duke@435 | 2864 | char* wrt = rd; |
duke@435 | 2865 | |
duke@435 | 2866 | options[i++].optionString = wrt; // Fill in option |
duke@435 | 2867 | while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL |
duke@435 | 2868 | if (*rd == '\'' || *rd == '"') { // handle a quoted string |
duke@435 | 2869 | int quote = *rd; // matching quote to look for |
duke@435 | 2870 | rd++; // don't copy open quote |
duke@435 | 2871 | while (*rd != quote) { // include everything (even spaces) up until quote |
duke@435 | 2872 | if (*rd == 0) { // string termination means unmatched string |
duke@435 | 2873 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2874 | "Unmatched quote in %s\n", name); |
duke@435 | 2875 | return JNI_ERR; |
duke@435 | 2876 | } |
duke@435 | 2877 | *wrt++ = *rd++; // copy to option string |
duke@435 | 2878 | } |
duke@435 | 2879 | rd++; // don't copy close quote |
duke@435 | 2880 | } else { |
duke@435 | 2881 | *wrt++ = *rd++; // copy to option string |
duke@435 | 2882 | } |
duke@435 | 2883 | } |
duke@435 | 2884 | // Need to check if we're done before writing a NULL, |
duke@435 | 2885 | // because the write could be to the byte that rd is pointing to. |
duke@435 | 2886 | if (*rd++ == 0) { |
duke@435 | 2887 | *wrt = 0; |
duke@435 | 2888 | break; |
duke@435 | 2889 | } |
duke@435 | 2890 | *wrt = 0; // Zero terminate option |
duke@435 | 2891 | } |
duke@435 | 2892 | // Construct JavaVMInitArgs structure and parse as if it was part of the command line |
duke@435 | 2893 | JavaVMInitArgs vm_args; |
duke@435 | 2894 | vm_args.version = JNI_VERSION_1_2; |
duke@435 | 2895 | vm_args.options = options; |
duke@435 | 2896 | vm_args.nOptions = i; |
kvn@999 | 2897 | vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
duke@435 | 2898 | |
duke@435 | 2899 | if (PrintVMOptions) { |
duke@435 | 2900 | const char* tail; |
duke@435 | 2901 | for (int i = 0; i < vm_args.nOptions; i++) { |
duke@435 | 2902 | const JavaVMOption *option = vm_args.options + i; |
duke@435 | 2903 | if (match_option(option, "-XX:", &tail)) { |
duke@435 | 2904 | logOption(tail); |
duke@435 | 2905 | } |
duke@435 | 2906 | } |
duke@435 | 2907 | } |
duke@435 | 2908 | |
duke@435 | 2909 | return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); |
duke@435 | 2910 | } |
duke@435 | 2911 | return JNI_OK; |
duke@435 | 2912 | } |
duke@435 | 2913 | |
iveresov@2246 | 2914 | |
duke@435 | 2915 | // Parse entry point called from JNI_CreateJavaVM |
duke@435 | 2916 | |
duke@435 | 2917 | jint Arguments::parse(const JavaVMInitArgs* args) { |
duke@435 | 2918 | |
duke@435 | 2919 | // Sharing support |
duke@435 | 2920 | // Construct the path to the archive |
duke@435 | 2921 | char jvm_path[JVM_MAXPATHLEN]; |
duke@435 | 2922 | os::jvm_path(jvm_path, sizeof(jvm_path)); |
duke@435 | 2923 | #ifdef TIERED |
duke@435 | 2924 | if (strstr(jvm_path, "client") != NULL) { |
duke@435 | 2925 | force_client_mode = true; |
duke@435 | 2926 | } |
duke@435 | 2927 | #endif // TIERED |
duke@435 | 2928 | char *end = strrchr(jvm_path, *os::file_separator()); |
duke@435 | 2929 | if (end != NULL) *end = '\0'; |
duke@435 | 2930 | char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + |
duke@435 | 2931 | strlen(os::file_separator()) + 20); |
duke@435 | 2932 | if (shared_archive_path == NULL) return JNI_ENOMEM; |
duke@435 | 2933 | strcpy(shared_archive_path, jvm_path); |
duke@435 | 2934 | strcat(shared_archive_path, os::file_separator()); |
duke@435 | 2935 | strcat(shared_archive_path, "classes"); |
duke@435 | 2936 | DEBUG_ONLY(strcat(shared_archive_path, "_g");) |
duke@435 | 2937 | strcat(shared_archive_path, ".jsa"); |
duke@435 | 2938 | SharedArchivePath = shared_archive_path; |
duke@435 | 2939 | |
duke@435 | 2940 | // Remaining part of option string |
duke@435 | 2941 | const char* tail; |
duke@435 | 2942 | |
duke@435 | 2943 | // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. |
duke@435 | 2944 | bool settings_file_specified = false; |
kvn@999 | 2945 | const char* flags_file; |
duke@435 | 2946 | int index; |
duke@435 | 2947 | for (index = 0; index < args->nOptions; index++) { |
duke@435 | 2948 | const JavaVMOption *option = args->options + index; |
duke@435 | 2949 | if (match_option(option, "-XX:Flags=", &tail)) { |
kvn@999 | 2950 | flags_file = tail; |
duke@435 | 2951 | settings_file_specified = true; |
duke@435 | 2952 | } |
duke@435 | 2953 | if (match_option(option, "-XX:+PrintVMOptions", &tail)) { |
duke@435 | 2954 | PrintVMOptions = true; |
duke@435 | 2955 | } |
kvn@688 | 2956 | if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
kvn@688 | 2957 | PrintVMOptions = false; |
kvn@688 | 2958 | } |
kvn@999 | 2959 | if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
kvn@999 | 2960 | IgnoreUnrecognizedVMOptions = true; |
kvn@999 | 2961 | } |
kvn@999 | 2962 | if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { |
kvn@999 | 2963 | IgnoreUnrecognizedVMOptions = false; |
kvn@999 | 2964 | } |
kvn@1585 | 2965 | if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
kvn@1585 | 2966 | CommandLineFlags::printFlags(); |
kvn@1585 | 2967 | vm_exit(0); |
kvn@1585 | 2968 | } |
ikrylov@2123 | 2969 | |
ikrylov@2123 | 2970 | #ifndef PRODUCT |
ikrylov@2123 | 2971 | if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
ikrylov@2123 | 2972 | CommandLineFlags::printFlags(true); |
ikrylov@2123 | 2973 | vm_exit(0); |
ikrylov@2123 | 2974 | } |
ikrylov@2123 | 2975 | #endif |
kvn@999 | 2976 | } |
kvn@999 | 2977 | |
kvn@999 | 2978 | if (IgnoreUnrecognizedVMOptions) { |
kvn@999 | 2979 | // uncast const to modify the flag args->ignoreUnrecognized |
kvn@999 | 2980 | *(jboolean*)(&args->ignoreUnrecognized) = true; |
kvn@999 | 2981 | } |
kvn@999 | 2982 | |
kvn@999 | 2983 | // Parse specified settings file |
kvn@999 | 2984 | if (settings_file_specified) { |
kvn@999 | 2985 | if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { |
kvn@999 | 2986 | return JNI_EINVAL; |
kvn@999 | 2987 | } |
duke@435 | 2988 | } |
duke@435 | 2989 | |
duke@435 | 2990 | // Parse default .hotspotrc settings file |
duke@435 | 2991 | if (!settings_file_specified) { |
duke@435 | 2992 | if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
duke@435 | 2993 | return JNI_EINVAL; |
duke@435 | 2994 | } |
duke@435 | 2995 | } |
duke@435 | 2996 | |
duke@435 | 2997 | if (PrintVMOptions) { |
duke@435 | 2998 | for (index = 0; index < args->nOptions; index++) { |
duke@435 | 2999 | const JavaVMOption *option = args->options + index; |
duke@435 | 3000 | if (match_option(option, "-XX:", &tail)) { |
duke@435 | 3001 | logOption(tail); |
duke@435 | 3002 | } |
duke@435 | 3003 | } |
duke@435 | 3004 | } |
duke@435 | 3005 | |
duke@435 | 3006 | // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS |
duke@435 | 3007 | jint result = parse_vm_init_args(args); |
duke@435 | 3008 | if (result != JNI_OK) { |
duke@435 | 3009 | return result; |
duke@435 | 3010 | } |
duke@435 | 3011 | |
duke@435 | 3012 | #ifndef PRODUCT |
duke@435 | 3013 | if (TraceBytecodesAt != 0) { |
duke@435 | 3014 | TraceBytecodes = true; |
duke@435 | 3015 | } |
duke@435 | 3016 | if (CountCompiledCalls) { |
duke@435 | 3017 | if (UseCounterDecay) { |
duke@435 | 3018 | warning("UseCounterDecay disabled because CountCalls is set"); |
duke@435 | 3019 | UseCounterDecay = false; |
duke@435 | 3020 | } |
duke@435 | 3021 | } |
duke@435 | 3022 | #endif // PRODUCT |
duke@435 | 3023 | |
jrose@1161 | 3024 | if (EnableInvokeDynamic && !EnableMethodHandles) { |
jrose@1161 | 3025 | if (!FLAG_IS_DEFAULT(EnableMethodHandles)) { |
jrose@1424 | 3026 | warning("forcing EnableMethodHandles true because EnableInvokeDynamic is true"); |
jrose@1161 | 3027 | } |
jrose@1161 | 3028 | EnableMethodHandles = true; |
jrose@1161 | 3029 | } |
jrose@1145 | 3030 | if (EnableMethodHandles && !AnonymousClasses) { |
jrose@1145 | 3031 | if (!FLAG_IS_DEFAULT(AnonymousClasses)) { |
jrose@1424 | 3032 | warning("forcing AnonymousClasses true because EnableMethodHandles is true"); |
jrose@1145 | 3033 | } |
jrose@1145 | 3034 | AnonymousClasses = true; |
jrose@1145 | 3035 | } |
jrose@1424 | 3036 | if ((EnableMethodHandles || AnonymousClasses) && ScavengeRootsInCode == 0) { |
jrose@1424 | 3037 | if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
jrose@1424 | 3038 | warning("forcing ScavengeRootsInCode non-zero because EnableMethodHandles or AnonymousClasses is true"); |
jrose@1424 | 3039 | } |
jrose@1424 | 3040 | ScavengeRootsInCode = 1; |
jrose@1424 | 3041 | } |
jrose@1145 | 3042 | |
duke@435 | 3043 | if (PrintGCDetails) { |
duke@435 | 3044 | // Turn on -verbose:gc options as well |
duke@435 | 3045 | PrintGC = true; |
duke@435 | 3046 | } |
duke@435 | 3047 | |
kvn@1926 | 3048 | // Set object alignment values. |
kvn@1926 | 3049 | set_object_alignment(); |
kvn@1926 | 3050 | |
duke@435 | 3051 | #ifdef SERIALGC |
phh@1499 | 3052 | force_serial_gc(); |
duke@435 | 3053 | #endif // SERIALGC |
duke@435 | 3054 | #ifdef KERNEL |
duke@435 | 3055 | no_shared_spaces(); |
duke@435 | 3056 | #endif // KERNEL |
duke@435 | 3057 | |
duke@435 | 3058 | // Set flags based on ergonomics. |
duke@435 | 3059 | set_ergonomics_flags(); |
duke@435 | 3060 | |
iveresov@2246 | 3061 | if (UseCompressedOops) { |
iveresov@2246 | 3062 | check_compressed_oops_compat(); |
twisti@1570 | 3063 | } |
twisti@1570 | 3064 | |
jmasa@445 | 3065 | // Check the GC selections again. |
jmasa@445 | 3066 | if (!check_gc_consistency()) { |
jmasa@445 | 3067 | return JNI_EINVAL; |
jmasa@445 | 3068 | } |
jmasa@445 | 3069 | |
iveresov@2138 | 3070 | if (TieredCompilation) { |
iveresov@2138 | 3071 | set_tiered_flags(); |
iveresov@2138 | 3072 | } else { |
iveresov@2138 | 3073 | // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. |
iveresov@2138 | 3074 | if (CompilationPolicyChoice >= 2) { |
iveresov@2138 | 3075 | vm_exit_during_initialization( |
iveresov@2138 | 3076 | "Incompatible compilation policy selected", NULL); |
iveresov@2138 | 3077 | } |
iveresov@2138 | 3078 | } |
iveresov@2138 | 3079 | |
ysr@1580 | 3080 | #ifndef KERNEL |
phh@1499 | 3081 | if (UseConcMarkSweepGC) { |
phh@1499 | 3082 | // Set flags for CMS and ParNew. Check UseConcMarkSweep first |
phh@1499 | 3083 | // to ensure that when both UseConcMarkSweepGC and UseParNewGC |
phh@1499 | 3084 | // are true, we don't call set_parnew_gc_flags() as well. |
jmasa@445 | 3085 | set_cms_and_parnew_gc_flags(); |
phh@1499 | 3086 | } else { |
phh@1499 | 3087 | // Set heap size based on available physical memory |
phh@1499 | 3088 | set_heap_size(); |
phh@1499 | 3089 | // Set per-collector flags |
phh@1499 | 3090 | if (UseParallelGC || UseParallelOldGC) { |
phh@1499 | 3091 | set_parallel_gc_flags(); |
phh@1499 | 3092 | } else if (UseParNewGC) { |
phh@1499 | 3093 | set_parnew_gc_flags(); |
phh@1499 | 3094 | } else if (UseG1GC) { |
phh@1499 | 3095 | set_g1_gc_flags(); |
phh@1499 | 3096 | } |
ysr@777 | 3097 | } |
ysr@1580 | 3098 | #endif // KERNEL |
jmasa@445 | 3099 | |
duke@435 | 3100 | #ifdef SERIALGC |
duke@435 | 3101 | assert(verify_serial_gc_flags(), "SerialGC unset"); |
duke@435 | 3102 | #endif // SERIALGC |
duke@435 | 3103 | |
duke@435 | 3104 | // Set bytecode rewriting flags |
duke@435 | 3105 | set_bytecode_flags(); |
duke@435 | 3106 | |
duke@435 | 3107 | // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. |
duke@435 | 3108 | set_aggressive_opts_flags(); |
duke@435 | 3109 | |
coleenp@2546 | 3110 | // Turn off biased locking for locking debug mode flags, |
coleenp@2546 | 3111 | // which are subtlely different from each other but neither works with |
coleenp@2546 | 3112 | // biased locking. |
coleenp@2613 | 3113 | if (UseHeavyMonitors |
coleenp@2613 | 3114 | #ifdef COMPILER1 |
coleenp@2613 | 3115 | || !UseFastLocking |
coleenp@2613 | 3116 | #endif // COMPILER1 |
coleenp@2613 | 3117 | ) { |
coleenp@2546 | 3118 | if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
coleenp@2546 | 3119 | // flag set to true on command line; warn the user that they |
coleenp@2546 | 3120 | // can't enable biased locking here |
coleenp@2546 | 3121 | warning("Biased Locking is not supported with locking debug flags" |
coleenp@2546 | 3122 | "; ignoring UseBiasedLocking flag." ); |
coleenp@2546 | 3123 | } |
coleenp@2546 | 3124 | UseBiasedLocking = false; |
coleenp@2546 | 3125 | } |
coleenp@2546 | 3126 | |
duke@435 | 3127 | #ifdef CC_INTERP |
twisti@1566 | 3128 | // Clear flags not supported by the C++ interpreter |
twisti@1566 | 3129 | FLAG_SET_DEFAULT(ProfileInterpreter, false); |
duke@435 | 3130 | FLAG_SET_DEFAULT(UseBiasedLocking, false); |
twisti@1566 | 3131 | LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
twisti@1566 | 3132 | #endif // CC_INTERP |
twisti@1566 | 3133 | |
kvn@855 | 3134 | #ifdef COMPILER2 |
kvn@855 | 3135 | if (!UseBiasedLocking || EmitSync != 0) { |
kvn@855 | 3136 | UseOptoBiasInlining = false; |
kvn@855 | 3137 | } |
kvn@855 | 3138 | #endif |
kvn@855 | 3139 | |
jrose@1590 | 3140 | if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
jrose@1590 | 3141 | warning("PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output"); |
jrose@1590 | 3142 | DebugNonSafepoints = true; |
jrose@1590 | 3143 | } |
jrose@1590 | 3144 | |
kvn@1623 | 3145 | #ifndef PRODUCT |
kvn@1623 | 3146 | if (CompileTheWorld) { |
kvn@1623 | 3147 | // Force NmethodSweeper to sweep whole CodeCache each time. |
kvn@1623 | 3148 | if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
kvn@1623 | 3149 | NmethodSweepFraction = 1; |
kvn@1623 | 3150 | } |
kvn@1623 | 3151 | } |
kvn@1623 | 3152 | #endif |
kvn@1623 | 3153 | |
duke@435 | 3154 | if (PrintCommandLineFlags) { |
duke@435 | 3155 | CommandLineFlags::printSetFlags(); |
duke@435 | 3156 | } |
duke@435 | 3157 | |
bobv@2036 | 3158 | // Apply CPU specific policy for the BiasedLocking |
bobv@2036 | 3159 | if (UseBiasedLocking) { |
bobv@2036 | 3160 | if (!VM_Version::use_biased_locking() && |
bobv@2036 | 3161 | !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
bobv@2036 | 3162 | UseBiasedLocking = false; |
bobv@2036 | 3163 | } |
bobv@2036 | 3164 | } |
bobv@2036 | 3165 | |
sla@2584 | 3166 | // set PauseAtExit if the gamma launcher was used and a debugger is attached |
sla@2584 | 3167 | // but only if not already set on the commandline |
sla@2584 | 3168 | if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
sla@2584 | 3169 | bool set = false; |
sla@2584 | 3170 | CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
sla@2584 | 3171 | if (!set) { |
sla@2584 | 3172 | FLAG_SET_DEFAULT(PauseAtExit, true); |
sla@2584 | 3173 | } |
sla@2584 | 3174 | } |
sla@2584 | 3175 | |
duke@435 | 3176 | return JNI_OK; |
duke@435 | 3177 | } |
duke@435 | 3178 | |
duke@435 | 3179 | int Arguments::PropertyList_count(SystemProperty* pl) { |
duke@435 | 3180 | int count = 0; |
duke@435 | 3181 | while(pl != NULL) { |
duke@435 | 3182 | count++; |
duke@435 | 3183 | pl = pl->next(); |
duke@435 | 3184 | } |
duke@435 | 3185 | return count; |
duke@435 | 3186 | } |
duke@435 | 3187 | |
duke@435 | 3188 | const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { |
duke@435 | 3189 | assert(key != NULL, "just checking"); |
duke@435 | 3190 | SystemProperty* prop; |
duke@435 | 3191 | for (prop = pl; prop != NULL; prop = prop->next()) { |
duke@435 | 3192 | if (strcmp(key, prop->key()) == 0) return prop->value(); |
duke@435 | 3193 | } |
duke@435 | 3194 | return NULL; |
duke@435 | 3195 | } |
duke@435 | 3196 | |
duke@435 | 3197 | const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { |
duke@435 | 3198 | int count = 0; |
duke@435 | 3199 | const char* ret_val = NULL; |
duke@435 | 3200 | |
duke@435 | 3201 | while(pl != NULL) { |
duke@435 | 3202 | if(count >= index) { |
duke@435 | 3203 | ret_val = pl->key(); |
duke@435 | 3204 | break; |
duke@435 | 3205 | } |
duke@435 | 3206 | count++; |
duke@435 | 3207 | pl = pl->next(); |
duke@435 | 3208 | } |
duke@435 | 3209 | |
duke@435 | 3210 | return ret_val; |
duke@435 | 3211 | } |
duke@435 | 3212 | |
duke@435 | 3213 | char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { |
duke@435 | 3214 | int count = 0; |
duke@435 | 3215 | char* ret_val = NULL; |
duke@435 | 3216 | |
duke@435 | 3217 | while(pl != NULL) { |
duke@435 | 3218 | if(count >= index) { |
duke@435 | 3219 | ret_val = pl->value(); |
duke@435 | 3220 | break; |
duke@435 | 3221 | } |
duke@435 | 3222 | count++; |
duke@435 | 3223 | pl = pl->next(); |
duke@435 | 3224 | } |
duke@435 | 3225 | |
duke@435 | 3226 | return ret_val; |
duke@435 | 3227 | } |
duke@435 | 3228 | |
duke@435 | 3229 | void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { |
duke@435 | 3230 | SystemProperty* p = *plist; |
duke@435 | 3231 | if (p == NULL) { |
duke@435 | 3232 | *plist = new_p; |
duke@435 | 3233 | } else { |
duke@435 | 3234 | while (p->next() != NULL) { |
duke@435 | 3235 | p = p->next(); |
duke@435 | 3236 | } |
duke@435 | 3237 | p->set_next(new_p); |
duke@435 | 3238 | } |
duke@435 | 3239 | } |
duke@435 | 3240 | |
duke@435 | 3241 | void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { |
duke@435 | 3242 | if (plist == NULL) |
duke@435 | 3243 | return; |
duke@435 | 3244 | |
duke@435 | 3245 | SystemProperty* new_p = new SystemProperty(k, v, true); |
duke@435 | 3246 | PropertyList_add(plist, new_p); |
duke@435 | 3247 | } |
duke@435 | 3248 | |
duke@435 | 3249 | // This add maintains unique property key in the list. |
phh@1126 | 3250 | void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
duke@435 | 3251 | if (plist == NULL) |
duke@435 | 3252 | return; |
duke@435 | 3253 | |
duke@435 | 3254 | // If property key exist then update with new value. |
duke@435 | 3255 | SystemProperty* prop; |
duke@435 | 3256 | for (prop = *plist; prop != NULL; prop = prop->next()) { |
duke@435 | 3257 | if (strcmp(k, prop->key()) == 0) { |
phh@1126 | 3258 | if (append) { |
phh@1126 | 3259 | prop->append_value(v); |
phh@1126 | 3260 | } else { |
phh@1126 | 3261 | prop->set_value(v); |
phh@1126 | 3262 | } |
duke@435 | 3263 | return; |
duke@435 | 3264 | } |
duke@435 | 3265 | } |
duke@435 | 3266 | |
duke@435 | 3267 | PropertyList_add(plist, k, v); |
duke@435 | 3268 | } |
duke@435 | 3269 | |
duke@435 | 3270 | #ifdef KERNEL |
duke@435 | 3271 | char *Arguments::get_kernel_properties() { |
duke@435 | 3272 | // Find properties starting with kernel and append them to string |
duke@435 | 3273 | // We need to find out how long they are first because the URL's that they |
duke@435 | 3274 | // might point to could get long. |
duke@435 | 3275 | int length = 0; |
duke@435 | 3276 | SystemProperty* prop; |
duke@435 | 3277 | for (prop = _system_properties; prop != NULL; prop = prop->next()) { |
duke@435 | 3278 | if (strncmp(prop->key(), "kernel.", 7 ) == 0) { |
duke@435 | 3279 | length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" |
duke@435 | 3280 | } |
duke@435 | 3281 | } |
duke@435 | 3282 | // Add one for null terminator. |
duke@435 | 3283 | char *props = AllocateHeap(length + 1, "get_kernel_properties"); |
duke@435 | 3284 | if (length != 0) { |
duke@435 | 3285 | int pos = 0; |
duke@435 | 3286 | for (prop = _system_properties; prop != NULL; prop = prop->next()) { |
duke@435 | 3287 | if (strncmp(prop->key(), "kernel.", 7 ) == 0) { |
duke@435 | 3288 | jio_snprintf(&props[pos], length-pos, |
duke@435 | 3289 | "-D%s=%s ", prop->key(), prop->value()); |
duke@435 | 3290 | pos = strlen(props); |
duke@435 | 3291 | } |
duke@435 | 3292 | } |
duke@435 | 3293 | } |
duke@435 | 3294 | // null terminate props in case of null |
duke@435 | 3295 | props[length] = '\0'; |
duke@435 | 3296 | return props; |
duke@435 | 3297 | } |
duke@435 | 3298 | #endif // KERNEL |
duke@435 | 3299 | |
duke@435 | 3300 | // Copies src into buf, replacing "%%" with "%" and "%p" with pid |
duke@435 | 3301 | // Returns true if all of the source pointed by src has been copied over to |
duke@435 | 3302 | // the destination buffer pointed by buf. Otherwise, returns false. |
duke@435 | 3303 | // Notes: |
duke@435 | 3304 | // 1. If the length (buflen) of the destination buffer excluding the |
duke@435 | 3305 | // NULL terminator character is not long enough for holding the expanded |
duke@435 | 3306 | // pid characters, it also returns false instead of returning the partially |
duke@435 | 3307 | // expanded one. |
duke@435 | 3308 | // 2. The passed in "buflen" should be large enough to hold the null terminator. |
duke@435 | 3309 | bool Arguments::copy_expand_pid(const char* src, size_t srclen, |
duke@435 | 3310 | char* buf, size_t buflen) { |
duke@435 | 3311 | const char* p = src; |
duke@435 | 3312 | char* b = buf; |
duke@435 | 3313 | const char* src_end = &src[srclen]; |
duke@435 | 3314 | char* buf_end = &buf[buflen - 1]; |
duke@435 | 3315 | |
duke@435 | 3316 | while (p < src_end && b < buf_end) { |
duke@435 | 3317 | if (*p == '%') { |
duke@435 | 3318 | switch (*(++p)) { |
duke@435 | 3319 | case '%': // "%%" ==> "%" |
duke@435 | 3320 | *b++ = *p++; |
duke@435 | 3321 | break; |
duke@435 | 3322 | case 'p': { // "%p" ==> current process id |
duke@435 | 3323 | // buf_end points to the character before the last character so |
duke@435 | 3324 | // that we could write '\0' to the end of the buffer. |
duke@435 | 3325 | size_t buf_sz = buf_end - b + 1; |
duke@435 | 3326 | int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); |
duke@435 | 3327 | |
duke@435 | 3328 | // if jio_snprintf fails or the buffer is not long enough to hold |
duke@435 | 3329 | // the expanded pid, returns false. |
duke@435 | 3330 | if (ret < 0 || ret >= (int)buf_sz) { |
duke@435 | 3331 | return false; |
duke@435 | 3332 | } else { |
duke@435 | 3333 | b += ret; |
duke@435 | 3334 | assert(*b == '\0', "fail in copy_expand_pid"); |
duke@435 | 3335 | if (p == src_end && b == buf_end + 1) { |
duke@435 | 3336 | // reach the end of the buffer. |
duke@435 | 3337 | return true; |
duke@435 | 3338 | } |
duke@435 | 3339 | } |
duke@435 | 3340 | p++; |
duke@435 | 3341 | break; |
duke@435 | 3342 | } |
duke@435 | 3343 | default : |
duke@435 | 3344 | *b++ = '%'; |
duke@435 | 3345 | } |
duke@435 | 3346 | } else { |
duke@435 | 3347 | *b++ = *p++; |
duke@435 | 3348 | } |
duke@435 | 3349 | } |
duke@435 | 3350 | *b = '\0'; |
duke@435 | 3351 | return (p == src_end); // return false if not all of the source was copied |
duke@435 | 3352 | } |