Sat, 28 Mar 2009 15:47:29 -0700
6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
Summary: When using compressed oops, rather than chaining the overflowed grey objects' pre-images through their klass words, we use GC-worker thread-local overflow stacks.
Reviewed-by: jcoomes, jmasa
duke@435 | 1 | /* |
xdono@1014 | 2 | * Copyright 1997-2009 Sun Microsystems, Inc. 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 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | #include "incls/_precompiled.incl" |
duke@435 | 26 | #include "incls/_arguments.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | #define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp" |
duke@435 | 29 | #define DEFAULT_JAVA_LAUNCHER "generic" |
duke@435 | 30 | |
duke@435 | 31 | char** Arguments::_jvm_flags_array = NULL; |
duke@435 | 32 | int Arguments::_num_jvm_flags = 0; |
duke@435 | 33 | char** Arguments::_jvm_args_array = NULL; |
duke@435 | 34 | int Arguments::_num_jvm_args = 0; |
duke@435 | 35 | char* Arguments::_java_command = NULL; |
duke@435 | 36 | SystemProperty* Arguments::_system_properties = NULL; |
duke@435 | 37 | const char* Arguments::_gc_log_filename = NULL; |
duke@435 | 38 | bool Arguments::_has_profile = false; |
duke@435 | 39 | bool Arguments::_has_alloc_profile = false; |
duke@435 | 40 | uintx Arguments::_initial_heap_size = 0; |
duke@435 | 41 | uintx Arguments::_min_heap_size = 0; |
duke@435 | 42 | Arguments::Mode Arguments::_mode = _mixed; |
duke@435 | 43 | bool Arguments::_java_compiler = false; |
duke@435 | 44 | bool Arguments::_xdebug_mode = false; |
duke@435 | 45 | const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; |
duke@435 | 46 | const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; |
duke@435 | 47 | int Arguments::_sun_java_launcher_pid = -1; |
duke@435 | 48 | |
duke@435 | 49 | // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) |
duke@435 | 50 | bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; |
duke@435 | 51 | bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; |
duke@435 | 52 | bool Arguments::_BackgroundCompilation = BackgroundCompilation; |
duke@435 | 53 | bool Arguments::_ClipInlining = ClipInlining; |
duke@435 | 54 | intx Arguments::_Tier2CompileThreshold = Tier2CompileThreshold; |
duke@435 | 55 | |
duke@435 | 56 | char* Arguments::SharedArchivePath = NULL; |
duke@435 | 57 | |
duke@435 | 58 | AgentLibraryList Arguments::_libraryList; |
duke@435 | 59 | AgentLibraryList Arguments::_agentList; |
duke@435 | 60 | |
duke@435 | 61 | abort_hook_t Arguments::_abort_hook = NULL; |
duke@435 | 62 | exit_hook_t Arguments::_exit_hook = NULL; |
duke@435 | 63 | vfprintf_hook_t Arguments::_vfprintf_hook = NULL; |
duke@435 | 64 | |
duke@435 | 65 | |
duke@435 | 66 | SystemProperty *Arguments::_java_ext_dirs = NULL; |
duke@435 | 67 | SystemProperty *Arguments::_java_endorsed_dirs = NULL; |
duke@435 | 68 | SystemProperty *Arguments::_sun_boot_library_path = NULL; |
duke@435 | 69 | SystemProperty *Arguments::_java_library_path = NULL; |
duke@435 | 70 | SystemProperty *Arguments::_java_home = NULL; |
duke@435 | 71 | SystemProperty *Arguments::_java_class_path = NULL; |
duke@435 | 72 | SystemProperty *Arguments::_sun_boot_class_path = NULL; |
duke@435 | 73 | |
duke@435 | 74 | char* Arguments::_meta_index_path = NULL; |
duke@435 | 75 | char* Arguments::_meta_index_dir = NULL; |
duke@435 | 76 | |
duke@435 | 77 | static bool force_client_mode = false; |
duke@435 | 78 | |
duke@435 | 79 | // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string |
duke@435 | 80 | |
duke@435 | 81 | static bool match_option(const JavaVMOption *option, const char* name, |
duke@435 | 82 | const char** tail) { |
duke@435 | 83 | int len = (int)strlen(name); |
duke@435 | 84 | if (strncmp(option->optionString, name, len) == 0) { |
duke@435 | 85 | *tail = option->optionString + len; |
duke@435 | 86 | return true; |
duke@435 | 87 | } else { |
duke@435 | 88 | return false; |
duke@435 | 89 | } |
duke@435 | 90 | } |
duke@435 | 91 | |
duke@435 | 92 | static void logOption(const char* opt) { |
duke@435 | 93 | if (PrintVMOptions) { |
duke@435 | 94 | jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); |
duke@435 | 95 | } |
duke@435 | 96 | } |
duke@435 | 97 | |
duke@435 | 98 | // Process java launcher properties. |
duke@435 | 99 | void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { |
duke@435 | 100 | // See if sun.java.launcher or sun.java.launcher.pid is defined. |
duke@435 | 101 | // Must do this before setting up other system properties, |
duke@435 | 102 | // as some of them may depend on launcher type. |
duke@435 | 103 | for (int index = 0; index < args->nOptions; index++) { |
duke@435 | 104 | const JavaVMOption* option = args->options + index; |
duke@435 | 105 | const char* tail; |
duke@435 | 106 | |
duke@435 | 107 | if (match_option(option, "-Dsun.java.launcher=", &tail)) { |
duke@435 | 108 | process_java_launcher_argument(tail, option->extraInfo); |
duke@435 | 109 | continue; |
duke@435 | 110 | } |
duke@435 | 111 | if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { |
duke@435 | 112 | _sun_java_launcher_pid = atoi(tail); |
duke@435 | 113 | continue; |
duke@435 | 114 | } |
duke@435 | 115 | } |
duke@435 | 116 | } |
duke@435 | 117 | |
duke@435 | 118 | // Initialize system properties key and value. |
duke@435 | 119 | void Arguments::init_system_properties() { |
duke@435 | 120 | |
duke@435 | 121 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.version", "1.0", false)); |
duke@435 | 122 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", |
duke@435 | 123 | "Java Virtual Machine Specification", false)); |
duke@435 | 124 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.vendor", |
duke@435 | 125 | "Sun Microsystems Inc.", false)); |
duke@435 | 126 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); |
duke@435 | 127 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); |
duke@435 | 128 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
duke@435 | 129 | PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); |
duke@435 | 130 | |
duke@435 | 131 | // following are JVMTI agent writeable properties. |
duke@435 | 132 | // Properties values are set to NULL and they are |
duke@435 | 133 | // os specific they are initialized in os::init_system_properties_values(). |
duke@435 | 134 | _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); |
duke@435 | 135 | _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); |
duke@435 | 136 | _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); |
duke@435 | 137 | _java_library_path = new SystemProperty("java.library.path", NULL, true); |
duke@435 | 138 | _java_home = new SystemProperty("java.home", NULL, true); |
duke@435 | 139 | _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); |
duke@435 | 140 | |
duke@435 | 141 | _java_class_path = new SystemProperty("java.class.path", "", true); |
duke@435 | 142 | |
duke@435 | 143 | // Add to System Property list. |
duke@435 | 144 | PropertyList_add(&_system_properties, _java_ext_dirs); |
duke@435 | 145 | PropertyList_add(&_system_properties, _java_endorsed_dirs); |
duke@435 | 146 | PropertyList_add(&_system_properties, _sun_boot_library_path); |
duke@435 | 147 | PropertyList_add(&_system_properties, _java_library_path); |
duke@435 | 148 | PropertyList_add(&_system_properties, _java_home); |
duke@435 | 149 | PropertyList_add(&_system_properties, _java_class_path); |
duke@435 | 150 | PropertyList_add(&_system_properties, _sun_boot_class_path); |
duke@435 | 151 | |
duke@435 | 152 | // Set OS specific system properties values |
duke@435 | 153 | os::init_system_properties_values(); |
duke@435 | 154 | } |
duke@435 | 155 | |
kamg@677 | 156 | /** |
kamg@677 | 157 | * Provide a slightly more user-friendly way of eliminating -XX flags. |
kamg@677 | 158 | * When a flag is eliminated, it can be added to this list in order to |
kamg@677 | 159 | * continue accepting this flag on the command-line, while issuing a warning |
kamg@677 | 160 | * and ignoring the value. Once the JDK version reaches the 'accept_until' |
kamg@677 | 161 | * limit, we flatly refuse to admit the existence of the flag. This allows |
kamg@677 | 162 | * a flag to die correctly over JDK releases using HSX. |
kamg@677 | 163 | */ |
kamg@677 | 164 | typedef struct { |
kamg@677 | 165 | const char* name; |
kamg@677 | 166 | JDK_Version obsoleted_in; // when the flag went away |
kamg@677 | 167 | JDK_Version accept_until; // which version to start denying the existence |
kamg@677 | 168 | } ObsoleteFlag; |
duke@435 | 169 | |
kamg@677 | 170 | static ObsoleteFlag obsolete_jvm_flags[] = { |
kamg@677 | 171 | { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 172 | { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 173 | { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 174 | { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 175 | { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 176 | { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 177 | { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 178 | { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 179 | { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 180 | { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 181 | { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 182 | { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 183 | { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, |
kamg@677 | 184 | { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, |
kamg@677 | 185 | { NULL, JDK_Version(0), JDK_Version(0) } |
kamg@677 | 186 | }; |
kamg@677 | 187 | |
kamg@677 | 188 | // Returns true if the flag is obsolete and fits into the range specified |
kamg@677 | 189 | // for being ignored. In the case that the flag is ignored, the 'version' |
kamg@677 | 190 | // value is filled in with the version number when the flag became |
kamg@677 | 191 | // obsolete so that that value can be displayed to the user. |
kamg@677 | 192 | bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { |
duke@435 | 193 | int i = 0; |
kamg@677 | 194 | assert(version != NULL, "Must provide a version buffer"); |
kamg@677 | 195 | while (obsolete_jvm_flags[i].name != NULL) { |
kamg@677 | 196 | const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; |
duke@435 | 197 | // <flag>=xxx form |
duke@435 | 198 | // [-|+]<flag> form |
kamg@677 | 199 | if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
duke@435 | 200 | ((s[0] == '+' || s[0] == '-') && |
kamg@677 | 201 | (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
kamg@677 | 202 | if (JDK_Version::current().compare(flag_status.accept_until) == -1) { |
kamg@677 | 203 | *version = flag_status.obsoleted_in; |
kamg@677 | 204 | return true; |
kamg@677 | 205 | } |
duke@435 | 206 | } |
duke@435 | 207 | i++; |
duke@435 | 208 | } |
duke@435 | 209 | return false; |
duke@435 | 210 | } |
duke@435 | 211 | |
duke@435 | 212 | // Constructs the system class path (aka boot class path) from the following |
duke@435 | 213 | // components, in order: |
duke@435 | 214 | // |
duke@435 | 215 | // prefix // from -Xbootclasspath/p:... |
duke@435 | 216 | // endorsed // the expansion of -Djava.endorsed.dirs=... |
duke@435 | 217 | // base // from os::get_system_properties() or -Xbootclasspath= |
duke@435 | 218 | // suffix // from -Xbootclasspath/a:... |
duke@435 | 219 | // |
duke@435 | 220 | // java.endorsed.dirs is a list of directories; any jar or zip files in the |
duke@435 | 221 | // directories are added to the sysclasspath just before the base. |
duke@435 | 222 | // |
duke@435 | 223 | // This could be AllStatic, but it isn't needed after argument processing is |
duke@435 | 224 | // complete. |
duke@435 | 225 | class SysClassPath: public StackObj { |
duke@435 | 226 | public: |
duke@435 | 227 | SysClassPath(const char* base); |
duke@435 | 228 | ~SysClassPath(); |
duke@435 | 229 | |
duke@435 | 230 | inline void set_base(const char* base); |
duke@435 | 231 | inline void add_prefix(const char* prefix); |
phh@966 | 232 | inline void add_suffix_to_prefix(const char* suffix); |
duke@435 | 233 | inline void add_suffix(const char* suffix); |
duke@435 | 234 | inline void reset_path(const char* base); |
duke@435 | 235 | |
duke@435 | 236 | // Expand the jar/zip files in each directory listed by the java.endorsed.dirs |
duke@435 | 237 | // property. Must be called after all command-line arguments have been |
duke@435 | 238 | // processed (in particular, -Djava.endorsed.dirs=...) and before calling |
duke@435 | 239 | // combined_path(). |
duke@435 | 240 | void expand_endorsed(); |
duke@435 | 241 | |
duke@435 | 242 | inline const char* get_base() const { return _items[_scp_base]; } |
duke@435 | 243 | inline const char* get_prefix() const { return _items[_scp_prefix]; } |
duke@435 | 244 | inline const char* get_suffix() const { return _items[_scp_suffix]; } |
duke@435 | 245 | inline const char* get_endorsed() const { return _items[_scp_endorsed]; } |
duke@435 | 246 | |
duke@435 | 247 | // Combine all the components into a single c-heap-allocated string; caller |
duke@435 | 248 | // must free the string if/when no longer needed. |
duke@435 | 249 | char* combined_path(); |
duke@435 | 250 | |
duke@435 | 251 | private: |
duke@435 | 252 | // Utility routines. |
duke@435 | 253 | static char* add_to_path(const char* path, const char* str, bool prepend); |
duke@435 | 254 | static char* add_jars_to_path(char* path, const char* directory); |
duke@435 | 255 | |
duke@435 | 256 | inline void reset_item_at(int index); |
duke@435 | 257 | |
duke@435 | 258 | // Array indices for the items that make up the sysclasspath. All except the |
duke@435 | 259 | // base are allocated in the C heap and freed by this class. |
duke@435 | 260 | enum { |
duke@435 | 261 | _scp_prefix, // from -Xbootclasspath/p:... |
duke@435 | 262 | _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... |
duke@435 | 263 | _scp_base, // the default sysclasspath |
duke@435 | 264 | _scp_suffix, // from -Xbootclasspath/a:... |
duke@435 | 265 | _scp_nitems // the number of items, must be last. |
duke@435 | 266 | }; |
duke@435 | 267 | |
duke@435 | 268 | const char* _items[_scp_nitems]; |
duke@435 | 269 | DEBUG_ONLY(bool _expansion_done;) |
duke@435 | 270 | }; |
duke@435 | 271 | |
duke@435 | 272 | SysClassPath::SysClassPath(const char* base) { |
duke@435 | 273 | memset(_items, 0, sizeof(_items)); |
duke@435 | 274 | _items[_scp_base] = base; |
duke@435 | 275 | DEBUG_ONLY(_expansion_done = false;) |
duke@435 | 276 | } |
duke@435 | 277 | |
duke@435 | 278 | SysClassPath::~SysClassPath() { |
duke@435 | 279 | // Free everything except the base. |
duke@435 | 280 | for (int i = 0; i < _scp_nitems; ++i) { |
duke@435 | 281 | if (i != _scp_base) reset_item_at(i); |
duke@435 | 282 | } |
duke@435 | 283 | DEBUG_ONLY(_expansion_done = false;) |
duke@435 | 284 | } |
duke@435 | 285 | |
duke@435 | 286 | inline void SysClassPath::set_base(const char* base) { |
duke@435 | 287 | _items[_scp_base] = base; |
duke@435 | 288 | } |
duke@435 | 289 | |
duke@435 | 290 | inline void SysClassPath::add_prefix(const char* prefix) { |
duke@435 | 291 | _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); |
duke@435 | 292 | } |
duke@435 | 293 | |
phh@966 | 294 | inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
phh@966 | 295 | _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
phh@966 | 296 | } |
phh@966 | 297 | |
duke@435 | 298 | inline void SysClassPath::add_suffix(const char* suffix) { |
duke@435 | 299 | _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); |
duke@435 | 300 | } |
duke@435 | 301 | |
duke@435 | 302 | inline void SysClassPath::reset_item_at(int index) { |
duke@435 | 303 | assert(index < _scp_nitems && index != _scp_base, "just checking"); |
duke@435 | 304 | if (_items[index] != NULL) { |
duke@435 | 305 | FREE_C_HEAP_ARRAY(char, _items[index]); |
duke@435 | 306 | _items[index] = NULL; |
duke@435 | 307 | } |
duke@435 | 308 | } |
duke@435 | 309 | |
duke@435 | 310 | inline void SysClassPath::reset_path(const char* base) { |
duke@435 | 311 | // Clear the prefix and suffix. |
duke@435 | 312 | reset_item_at(_scp_prefix); |
duke@435 | 313 | reset_item_at(_scp_suffix); |
duke@435 | 314 | set_base(base); |
duke@435 | 315 | } |
duke@435 | 316 | |
duke@435 | 317 | //------------------------------------------------------------------------------ |
duke@435 | 318 | |
duke@435 | 319 | void SysClassPath::expand_endorsed() { |
duke@435 | 320 | assert(_items[_scp_endorsed] == NULL, "can only be called once."); |
duke@435 | 321 | |
duke@435 | 322 | const char* path = Arguments::get_property("java.endorsed.dirs"); |
duke@435 | 323 | if (path == NULL) { |
duke@435 | 324 | path = Arguments::get_endorsed_dir(); |
duke@435 | 325 | assert(path != NULL, "no default for java.endorsed.dirs"); |
duke@435 | 326 | } |
duke@435 | 327 | |
duke@435 | 328 | char* expanded_path = NULL; |
duke@435 | 329 | const char separator = *os::path_separator(); |
duke@435 | 330 | const char* const end = path + strlen(path); |
duke@435 | 331 | while (path < end) { |
duke@435 | 332 | const char* tmp_end = strchr(path, separator); |
duke@435 | 333 | if (tmp_end == NULL) { |
duke@435 | 334 | expanded_path = add_jars_to_path(expanded_path, path); |
duke@435 | 335 | path = end; |
duke@435 | 336 | } else { |
duke@435 | 337 | char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); |
duke@435 | 338 | memcpy(dirpath, path, tmp_end - path); |
duke@435 | 339 | dirpath[tmp_end - path] = '\0'; |
duke@435 | 340 | expanded_path = add_jars_to_path(expanded_path, dirpath); |
duke@435 | 341 | FREE_C_HEAP_ARRAY(char, dirpath); |
duke@435 | 342 | path = tmp_end + 1; |
duke@435 | 343 | } |
duke@435 | 344 | } |
duke@435 | 345 | _items[_scp_endorsed] = expanded_path; |
duke@435 | 346 | DEBUG_ONLY(_expansion_done = true;) |
duke@435 | 347 | } |
duke@435 | 348 | |
duke@435 | 349 | // Combine the bootclasspath elements, some of which may be null, into a single |
duke@435 | 350 | // c-heap-allocated string. |
duke@435 | 351 | char* SysClassPath::combined_path() { |
duke@435 | 352 | assert(_items[_scp_base] != NULL, "empty default sysclasspath"); |
duke@435 | 353 | assert(_expansion_done, "must call expand_endorsed() first."); |
duke@435 | 354 | |
duke@435 | 355 | size_t lengths[_scp_nitems]; |
duke@435 | 356 | size_t total_len = 0; |
duke@435 | 357 | |
duke@435 | 358 | const char separator = *os::path_separator(); |
duke@435 | 359 | |
duke@435 | 360 | // Get the lengths. |
duke@435 | 361 | int i; |
duke@435 | 362 | for (i = 0; i < _scp_nitems; ++i) { |
duke@435 | 363 | if (_items[i] != NULL) { |
duke@435 | 364 | lengths[i] = strlen(_items[i]); |
duke@435 | 365 | // Include space for the separator char (or a NULL for the last item). |
duke@435 | 366 | total_len += lengths[i] + 1; |
duke@435 | 367 | } |
duke@435 | 368 | } |
duke@435 | 369 | assert(total_len > 0, "empty sysclasspath not allowed"); |
duke@435 | 370 | |
duke@435 | 371 | // Copy the _items to a single string. |
duke@435 | 372 | char* cp = NEW_C_HEAP_ARRAY(char, total_len); |
duke@435 | 373 | char* cp_tmp = cp; |
duke@435 | 374 | for (i = 0; i < _scp_nitems; ++i) { |
duke@435 | 375 | if (_items[i] != NULL) { |
duke@435 | 376 | memcpy(cp_tmp, _items[i], lengths[i]); |
duke@435 | 377 | cp_tmp += lengths[i]; |
duke@435 | 378 | *cp_tmp++ = separator; |
duke@435 | 379 | } |
duke@435 | 380 | } |
duke@435 | 381 | *--cp_tmp = '\0'; // Replace the extra separator. |
duke@435 | 382 | return cp; |
duke@435 | 383 | } |
duke@435 | 384 | |
duke@435 | 385 | // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. |
duke@435 | 386 | char* |
duke@435 | 387 | SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { |
duke@435 | 388 | char *cp; |
duke@435 | 389 | |
duke@435 | 390 | assert(str != NULL, "just checking"); |
duke@435 | 391 | if (path == NULL) { |
duke@435 | 392 | size_t len = strlen(str) + 1; |
duke@435 | 393 | cp = NEW_C_HEAP_ARRAY(char, len); |
duke@435 | 394 | memcpy(cp, str, len); // copy the trailing null |
duke@435 | 395 | } else { |
duke@435 | 396 | const char separator = *os::path_separator(); |
duke@435 | 397 | size_t old_len = strlen(path); |
duke@435 | 398 | size_t str_len = strlen(str); |
duke@435 | 399 | size_t len = old_len + str_len + 2; |
duke@435 | 400 | |
duke@435 | 401 | if (prepend) { |
duke@435 | 402 | cp = NEW_C_HEAP_ARRAY(char, len); |
duke@435 | 403 | char* cp_tmp = cp; |
duke@435 | 404 | memcpy(cp_tmp, str, str_len); |
duke@435 | 405 | cp_tmp += str_len; |
duke@435 | 406 | *cp_tmp = separator; |
duke@435 | 407 | memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null |
duke@435 | 408 | FREE_C_HEAP_ARRAY(char, path); |
duke@435 | 409 | } else { |
duke@435 | 410 | cp = REALLOC_C_HEAP_ARRAY(char, path, len); |
duke@435 | 411 | char* cp_tmp = cp + old_len; |
duke@435 | 412 | *cp_tmp = separator; |
duke@435 | 413 | memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null |
duke@435 | 414 | } |
duke@435 | 415 | } |
duke@435 | 416 | return cp; |
duke@435 | 417 | } |
duke@435 | 418 | |
duke@435 | 419 | // Scan the directory and append any jar or zip files found to path. |
duke@435 | 420 | // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. |
duke@435 | 421 | char* SysClassPath::add_jars_to_path(char* path, const char* directory) { |
duke@435 | 422 | DIR* dir = os::opendir(directory); |
duke@435 | 423 | if (dir == NULL) return path; |
duke@435 | 424 | |
duke@435 | 425 | char dir_sep[2] = { '\0', '\0' }; |
duke@435 | 426 | size_t directory_len = strlen(directory); |
duke@435 | 427 | const char fileSep = *os::file_separator(); |
duke@435 | 428 | if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; |
duke@435 | 429 | |
duke@435 | 430 | /* Scan the directory for jars/zips, appending them to path. */ |
duke@435 | 431 | struct dirent *entry; |
duke@435 | 432 | char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); |
duke@435 | 433 | while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
duke@435 | 434 | const char* name = entry->d_name; |
duke@435 | 435 | const char* ext = name + strlen(name) - 4; |
duke@435 | 436 | bool isJarOrZip = ext > name && |
duke@435 | 437 | (os::file_name_strcmp(ext, ".jar") == 0 || |
duke@435 | 438 | os::file_name_strcmp(ext, ".zip") == 0); |
duke@435 | 439 | if (isJarOrZip) { |
duke@435 | 440 | char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); |
duke@435 | 441 | sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
duke@435 | 442 | path = add_to_path(path, jarpath, false); |
duke@435 | 443 | FREE_C_HEAP_ARRAY(char, jarpath); |
duke@435 | 444 | } |
duke@435 | 445 | } |
duke@435 | 446 | FREE_C_HEAP_ARRAY(char, dbuf); |
duke@435 | 447 | os::closedir(dir); |
duke@435 | 448 | return path; |
duke@435 | 449 | } |
duke@435 | 450 | |
duke@435 | 451 | // Parses a memory size specification string. |
swamyv@924 | 452 | static bool atomull(const char *s, julong* result) { |
swamyv@924 | 453 | julong n = 0; |
swamyv@924 | 454 | int args_read = sscanf(s, os::julong_format_specifier(), &n); |
duke@435 | 455 | if (args_read != 1) { |
duke@435 | 456 | return false; |
duke@435 | 457 | } |
duke@435 | 458 | while (*s != '\0' && isdigit(*s)) { |
duke@435 | 459 | s++; |
duke@435 | 460 | } |
duke@435 | 461 | // 4705540: illegal if more characters are found after the first non-digit |
duke@435 | 462 | if (strlen(s) > 1) { |
duke@435 | 463 | return false; |
duke@435 | 464 | } |
duke@435 | 465 | switch (*s) { |
duke@435 | 466 | case 'T': case 't': |
duke@435 | 467 | *result = n * G * K; |
swamyv@924 | 468 | // Check for overflow. |
swamyv@924 | 469 | if (*result/((julong)G * K) != n) return false; |
duke@435 | 470 | return true; |
duke@435 | 471 | case 'G': case 'g': |
duke@435 | 472 | *result = n * G; |
swamyv@924 | 473 | if (*result/G != n) return false; |
duke@435 | 474 | return true; |
duke@435 | 475 | case 'M': case 'm': |
duke@435 | 476 | *result = n * M; |
swamyv@924 | 477 | if (*result/M != n) return false; |
duke@435 | 478 | return true; |
duke@435 | 479 | case 'K': case 'k': |
duke@435 | 480 | *result = n * K; |
swamyv@924 | 481 | if (*result/K != n) return false; |
duke@435 | 482 | return true; |
duke@435 | 483 | case '\0': |
duke@435 | 484 | *result = n; |
duke@435 | 485 | return true; |
duke@435 | 486 | default: |
duke@435 | 487 | return false; |
duke@435 | 488 | } |
duke@435 | 489 | } |
duke@435 | 490 | |
swamyv@924 | 491 | Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
duke@435 | 492 | if (size < min_size) return arg_too_small; |
duke@435 | 493 | // Check that size will fit in a size_t (only relevant on 32-bit) |
swamyv@924 | 494 | if (size > max_uintx) return arg_too_big; |
duke@435 | 495 | return arg_in_range; |
duke@435 | 496 | } |
duke@435 | 497 | |
duke@435 | 498 | // Describe an argument out of range error |
duke@435 | 499 | void Arguments::describe_range_error(ArgsRange errcode) { |
duke@435 | 500 | switch(errcode) { |
duke@435 | 501 | case arg_too_big: |
duke@435 | 502 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 503 | "The specified size exceeds the maximum " |
duke@435 | 504 | "representable size.\n"); |
duke@435 | 505 | break; |
duke@435 | 506 | case arg_too_small: |
duke@435 | 507 | case arg_unreadable: |
duke@435 | 508 | case arg_in_range: |
duke@435 | 509 | // do nothing for now |
duke@435 | 510 | break; |
duke@435 | 511 | default: |
duke@435 | 512 | ShouldNotReachHere(); |
duke@435 | 513 | } |
duke@435 | 514 | } |
duke@435 | 515 | |
duke@435 | 516 | static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { |
duke@435 | 517 | return CommandLineFlags::boolAtPut(name, &value, origin); |
duke@435 | 518 | } |
duke@435 | 519 | |
duke@435 | 520 | static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { |
duke@435 | 521 | double v; |
duke@435 | 522 | if (sscanf(value, "%lf", &v) != 1) { |
duke@435 | 523 | return false; |
duke@435 | 524 | } |
duke@435 | 525 | |
duke@435 | 526 | if (CommandLineFlags::doubleAtPut(name, &v, origin)) { |
duke@435 | 527 | return true; |
duke@435 | 528 | } |
duke@435 | 529 | return false; |
duke@435 | 530 | } |
duke@435 | 531 | |
duke@435 | 532 | static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { |
swamyv@924 | 533 | julong v; |
duke@435 | 534 | intx intx_v; |
duke@435 | 535 | bool is_neg = false; |
swamyv@924 | 536 | // Check the sign first since atomull() parses only unsigned values. |
duke@435 | 537 | if (*value == '-') { |
duke@435 | 538 | if (!CommandLineFlags::intxAt(name, &intx_v)) { |
duke@435 | 539 | return false; |
duke@435 | 540 | } |
duke@435 | 541 | value++; |
duke@435 | 542 | is_neg = true; |
duke@435 | 543 | } |
swamyv@924 | 544 | if (!atomull(value, &v)) { |
duke@435 | 545 | return false; |
duke@435 | 546 | } |
duke@435 | 547 | intx_v = (intx) v; |
duke@435 | 548 | if (is_neg) { |
duke@435 | 549 | intx_v = -intx_v; |
duke@435 | 550 | } |
duke@435 | 551 | if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { |
duke@435 | 552 | return true; |
duke@435 | 553 | } |
duke@435 | 554 | uintx uintx_v = (uintx) v; |
duke@435 | 555 | if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { |
duke@435 | 556 | return true; |
duke@435 | 557 | } |
duke@435 | 558 | return false; |
duke@435 | 559 | } |
duke@435 | 560 | |
duke@435 | 561 | static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { |
duke@435 | 562 | if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; |
duke@435 | 563 | // Contract: CommandLineFlags always returns a pointer that needs freeing. |
duke@435 | 564 | FREE_C_HEAP_ARRAY(char, value); |
duke@435 | 565 | return true; |
duke@435 | 566 | } |
duke@435 | 567 | |
duke@435 | 568 | static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { |
duke@435 | 569 | const char* old_value = ""; |
duke@435 | 570 | if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; |
duke@435 | 571 | size_t old_len = old_value != NULL ? strlen(old_value) : 0; |
duke@435 | 572 | size_t new_len = strlen(new_value); |
duke@435 | 573 | const char* value; |
duke@435 | 574 | char* free_this_too = NULL; |
duke@435 | 575 | if (old_len == 0) { |
duke@435 | 576 | value = new_value; |
duke@435 | 577 | } else if (new_len == 0) { |
duke@435 | 578 | value = old_value; |
duke@435 | 579 | } else { |
duke@435 | 580 | char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); |
duke@435 | 581 | // each new setting adds another LINE to the switch: |
duke@435 | 582 | sprintf(buf, "%s\n%s", old_value, new_value); |
duke@435 | 583 | value = buf; |
duke@435 | 584 | free_this_too = buf; |
duke@435 | 585 | } |
duke@435 | 586 | (void) CommandLineFlags::ccstrAtPut(name, &value, origin); |
duke@435 | 587 | // CommandLineFlags always returns a pointer that needs freeing. |
duke@435 | 588 | FREE_C_HEAP_ARRAY(char, value); |
duke@435 | 589 | if (free_this_too != NULL) { |
duke@435 | 590 | // CommandLineFlags made its own copy, so I must delete my own temp. buffer. |
duke@435 | 591 | FREE_C_HEAP_ARRAY(char, free_this_too); |
duke@435 | 592 | } |
duke@435 | 593 | return true; |
duke@435 | 594 | } |
duke@435 | 595 | |
duke@435 | 596 | bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { |
duke@435 | 597 | |
duke@435 | 598 | // range of acceptable characters spelled out for portability reasons |
duke@435 | 599 | #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" |
duke@435 | 600 | #define BUFLEN 255 |
duke@435 | 601 | char name[BUFLEN+1]; |
duke@435 | 602 | char dummy; |
duke@435 | 603 | |
duke@435 | 604 | if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { |
duke@435 | 605 | return set_bool_flag(name, false, origin); |
duke@435 | 606 | } |
duke@435 | 607 | if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { |
duke@435 | 608 | return set_bool_flag(name, true, origin); |
duke@435 | 609 | } |
duke@435 | 610 | |
duke@435 | 611 | char punct; |
duke@435 | 612 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { |
duke@435 | 613 | const char* value = strchr(arg, '=') + 1; |
duke@435 | 614 | Flag* flag = Flag::find_flag(name, strlen(name)); |
duke@435 | 615 | if (flag != NULL && flag->is_ccstr()) { |
duke@435 | 616 | if (flag->ccstr_accumulates()) { |
duke@435 | 617 | return append_to_string_flag(name, value, origin); |
duke@435 | 618 | } else { |
duke@435 | 619 | if (value[0] == '\0') { |
duke@435 | 620 | value = NULL; |
duke@435 | 621 | } |
duke@435 | 622 | return set_string_flag(name, value, origin); |
duke@435 | 623 | } |
duke@435 | 624 | } |
duke@435 | 625 | } |
duke@435 | 626 | |
duke@435 | 627 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { |
duke@435 | 628 | const char* value = strchr(arg, '=') + 1; |
duke@435 | 629 | // -XX:Foo:=xxx will reset the string flag to the given value. |
duke@435 | 630 | if (value[0] == '\0') { |
duke@435 | 631 | value = NULL; |
duke@435 | 632 | } |
duke@435 | 633 | return set_string_flag(name, value, origin); |
duke@435 | 634 | } |
duke@435 | 635 | |
duke@435 | 636 | #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" |
duke@435 | 637 | #define SIGNED_NUMBER_RANGE "[-0123456789]" |
duke@435 | 638 | #define NUMBER_RANGE "[0123456789]" |
duke@435 | 639 | char value[BUFLEN + 1]; |
duke@435 | 640 | char value2[BUFLEN + 1]; |
duke@435 | 641 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { |
duke@435 | 642 | // Looks like a floating-point number -- try again with more lenient format string |
duke@435 | 643 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { |
duke@435 | 644 | return set_fp_numeric_flag(name, value, origin); |
duke@435 | 645 | } |
duke@435 | 646 | } |
duke@435 | 647 | |
duke@435 | 648 | #define VALUE_RANGE "[-kmgtKMGT0123456789]" |
duke@435 | 649 | if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { |
duke@435 | 650 | return set_numeric_flag(name, value, origin); |
duke@435 | 651 | } |
duke@435 | 652 | |
duke@435 | 653 | return false; |
duke@435 | 654 | } |
duke@435 | 655 | |
duke@435 | 656 | void Arguments::add_string(char*** bldarray, int* count, const char* arg) { |
duke@435 | 657 | assert(bldarray != NULL, "illegal argument"); |
duke@435 | 658 | |
duke@435 | 659 | if (arg == NULL) { |
duke@435 | 660 | return; |
duke@435 | 661 | } |
duke@435 | 662 | |
duke@435 | 663 | int index = *count; |
duke@435 | 664 | |
duke@435 | 665 | // expand the array and add arg to the last element |
duke@435 | 666 | (*count)++; |
duke@435 | 667 | if (*bldarray == NULL) { |
duke@435 | 668 | *bldarray = NEW_C_HEAP_ARRAY(char*, *count); |
duke@435 | 669 | } else { |
duke@435 | 670 | *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); |
duke@435 | 671 | } |
duke@435 | 672 | (*bldarray)[index] = strdup(arg); |
duke@435 | 673 | } |
duke@435 | 674 | |
duke@435 | 675 | void Arguments::build_jvm_args(const char* arg) { |
duke@435 | 676 | add_string(&_jvm_args_array, &_num_jvm_args, arg); |
duke@435 | 677 | } |
duke@435 | 678 | |
duke@435 | 679 | void Arguments::build_jvm_flags(const char* arg) { |
duke@435 | 680 | add_string(&_jvm_flags_array, &_num_jvm_flags, arg); |
duke@435 | 681 | } |
duke@435 | 682 | |
duke@435 | 683 | // utility function to return a string that concatenates all |
duke@435 | 684 | // strings in a given char** array |
duke@435 | 685 | const char* Arguments::build_resource_string(char** args, int count) { |
duke@435 | 686 | if (args == NULL || count == 0) { |
duke@435 | 687 | return NULL; |
duke@435 | 688 | } |
duke@435 | 689 | size_t length = strlen(args[0]) + 1; // add 1 for the null terminator |
duke@435 | 690 | for (int i = 1; i < count; i++) { |
duke@435 | 691 | length += strlen(args[i]) + 1; // add 1 for a space |
duke@435 | 692 | } |
duke@435 | 693 | char* s = NEW_RESOURCE_ARRAY(char, length); |
duke@435 | 694 | strcpy(s, args[0]); |
duke@435 | 695 | for (int j = 1; j < count; j++) { |
duke@435 | 696 | strcat(s, " "); |
duke@435 | 697 | strcat(s, args[j]); |
duke@435 | 698 | } |
duke@435 | 699 | return (const char*) s; |
duke@435 | 700 | } |
duke@435 | 701 | |
duke@435 | 702 | void Arguments::print_on(outputStream* st) { |
duke@435 | 703 | st->print_cr("VM Arguments:"); |
duke@435 | 704 | if (num_jvm_flags() > 0) { |
duke@435 | 705 | st->print("jvm_flags: "); print_jvm_flags_on(st); |
duke@435 | 706 | } |
duke@435 | 707 | if (num_jvm_args() > 0) { |
duke@435 | 708 | st->print("jvm_args: "); print_jvm_args_on(st); |
duke@435 | 709 | } |
duke@435 | 710 | st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); |
duke@435 | 711 | st->print_cr("Launcher Type: %s", _sun_java_launcher); |
duke@435 | 712 | } |
duke@435 | 713 | |
duke@435 | 714 | void Arguments::print_jvm_flags_on(outputStream* st) { |
duke@435 | 715 | if (_num_jvm_flags > 0) { |
duke@435 | 716 | for (int i=0; i < _num_jvm_flags; i++) { |
duke@435 | 717 | st->print("%s ", _jvm_flags_array[i]); |
duke@435 | 718 | } |
duke@435 | 719 | st->print_cr(""); |
duke@435 | 720 | } |
duke@435 | 721 | } |
duke@435 | 722 | |
duke@435 | 723 | void Arguments::print_jvm_args_on(outputStream* st) { |
duke@435 | 724 | if (_num_jvm_args > 0) { |
duke@435 | 725 | for (int i=0; i < _num_jvm_args; i++) { |
duke@435 | 726 | st->print("%s ", _jvm_args_array[i]); |
duke@435 | 727 | } |
duke@435 | 728 | st->print_cr(""); |
duke@435 | 729 | } |
duke@435 | 730 | } |
duke@435 | 731 | |
kamg@677 | 732 | bool Arguments::process_argument(const char* arg, |
kamg@677 | 733 | jboolean ignore_unrecognized, FlagValueOrigin origin) { |
kamg@677 | 734 | |
kamg@677 | 735 | JDK_Version since = JDK_Version(); |
duke@435 | 736 | |
duke@435 | 737 | if (parse_argument(arg, origin)) { |
duke@435 | 738 | // do nothing |
kamg@677 | 739 | } else if (is_newly_obsolete(arg, &since)) { |
kamg@677 | 740 | enum { bufsize = 256 }; |
kamg@677 | 741 | char buffer[bufsize]; |
kamg@677 | 742 | since.to_string(buffer, bufsize); |
duke@435 | 743 | jio_fprintf(defaultStream::error_stream(), |
kamg@677 | 744 | "Warning: The flag %s has been EOL'd as of %s and will" |
kamg@677 | 745 | " be ignored\n", arg, buffer); |
duke@435 | 746 | } else { |
duke@435 | 747 | if (!ignore_unrecognized) { |
duke@435 | 748 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 749 | "Unrecognized VM option '%s'\n", arg); |
duke@435 | 750 | // allow for commandline "commenting out" options like -XX:#+Verbose |
duke@435 | 751 | if (strlen(arg) == 0 || arg[0] != '#') { |
duke@435 | 752 | return false; |
duke@435 | 753 | } |
duke@435 | 754 | } |
duke@435 | 755 | } |
duke@435 | 756 | return true; |
duke@435 | 757 | } |
duke@435 | 758 | |
duke@435 | 759 | bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { |
duke@435 | 760 | FILE* stream = fopen(file_name, "rb"); |
duke@435 | 761 | if (stream == NULL) { |
duke@435 | 762 | if (should_exist) { |
duke@435 | 763 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 764 | "Could not open settings file %s\n", file_name); |
duke@435 | 765 | return false; |
duke@435 | 766 | } else { |
duke@435 | 767 | return true; |
duke@435 | 768 | } |
duke@435 | 769 | } |
duke@435 | 770 | |
duke@435 | 771 | char token[1024]; |
duke@435 | 772 | int pos = 0; |
duke@435 | 773 | |
duke@435 | 774 | bool in_white_space = true; |
duke@435 | 775 | bool in_comment = false; |
duke@435 | 776 | bool in_quote = false; |
duke@435 | 777 | char quote_c = 0; |
duke@435 | 778 | bool result = true; |
duke@435 | 779 | |
duke@435 | 780 | int c = getc(stream); |
duke@435 | 781 | while(c != EOF) { |
duke@435 | 782 | if (in_white_space) { |
duke@435 | 783 | if (in_comment) { |
duke@435 | 784 | if (c == '\n') in_comment = false; |
duke@435 | 785 | } else { |
duke@435 | 786 | if (c == '#') in_comment = true; |
duke@435 | 787 | else if (!isspace(c)) { |
duke@435 | 788 | in_white_space = false; |
duke@435 | 789 | token[pos++] = c; |
duke@435 | 790 | } |
duke@435 | 791 | } |
duke@435 | 792 | } else { |
duke@435 | 793 | if (c == '\n' || (!in_quote && isspace(c))) { |
duke@435 | 794 | // token ends at newline, or at unquoted whitespace |
duke@435 | 795 | // this allows a way to include spaces in string-valued options |
duke@435 | 796 | token[pos] = '\0'; |
duke@435 | 797 | logOption(token); |
duke@435 | 798 | result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); |
duke@435 | 799 | build_jvm_flags(token); |
duke@435 | 800 | pos = 0; |
duke@435 | 801 | in_white_space = true; |
duke@435 | 802 | in_quote = false; |
duke@435 | 803 | } else if (!in_quote && (c == '\'' || c == '"')) { |
duke@435 | 804 | in_quote = true; |
duke@435 | 805 | quote_c = c; |
duke@435 | 806 | } else if (in_quote && (c == quote_c)) { |
duke@435 | 807 | in_quote = false; |
duke@435 | 808 | } else { |
duke@435 | 809 | token[pos++] = c; |
duke@435 | 810 | } |
duke@435 | 811 | } |
duke@435 | 812 | c = getc(stream); |
duke@435 | 813 | } |
duke@435 | 814 | if (pos > 0) { |
duke@435 | 815 | token[pos] = '\0'; |
duke@435 | 816 | result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); |
duke@435 | 817 | build_jvm_flags(token); |
duke@435 | 818 | } |
duke@435 | 819 | fclose(stream); |
duke@435 | 820 | return result; |
duke@435 | 821 | } |
duke@435 | 822 | |
duke@435 | 823 | //============================================================================================================= |
duke@435 | 824 | // Parsing of properties (-D) |
duke@435 | 825 | |
duke@435 | 826 | const char* Arguments::get_property(const char* key) { |
duke@435 | 827 | return PropertyList_get_value(system_properties(), key); |
duke@435 | 828 | } |
duke@435 | 829 | |
duke@435 | 830 | bool Arguments::add_property(const char* prop) { |
duke@435 | 831 | const char* eq = strchr(prop, '='); |
duke@435 | 832 | char* key; |
duke@435 | 833 | // ns must be static--its address may be stored in a SystemProperty object. |
duke@435 | 834 | const static char ns[1] = {0}; |
duke@435 | 835 | char* value = (char *)ns; |
duke@435 | 836 | |
duke@435 | 837 | size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); |
duke@435 | 838 | key = AllocateHeap(key_len + 1, "add_property"); |
duke@435 | 839 | strncpy(key, prop, key_len); |
duke@435 | 840 | key[key_len] = '\0'; |
duke@435 | 841 | |
duke@435 | 842 | if (eq != NULL) { |
duke@435 | 843 | size_t value_len = strlen(prop) - key_len - 1; |
duke@435 | 844 | value = AllocateHeap(value_len + 1, "add_property"); |
duke@435 | 845 | strncpy(value, &prop[key_len + 1], value_len + 1); |
duke@435 | 846 | } |
duke@435 | 847 | |
duke@435 | 848 | if (strcmp(key, "java.compiler") == 0) { |
duke@435 | 849 | process_java_compiler_argument(value); |
duke@435 | 850 | FreeHeap(key); |
duke@435 | 851 | if (eq != NULL) { |
duke@435 | 852 | FreeHeap(value); |
duke@435 | 853 | } |
duke@435 | 854 | return true; |
duke@435 | 855 | } |
duke@435 | 856 | else if (strcmp(key, "sun.java.command") == 0) { |
duke@435 | 857 | |
duke@435 | 858 | _java_command = value; |
duke@435 | 859 | |
duke@435 | 860 | // don't add this property to the properties exposed to the java application |
duke@435 | 861 | FreeHeap(key); |
duke@435 | 862 | return true; |
duke@435 | 863 | } |
duke@435 | 864 | else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
duke@435 | 865 | // launcher.pid property is private and is processed |
duke@435 | 866 | // in process_sun_java_launcher_properties(); |
duke@435 | 867 | // the sun.java.launcher property is passed on to the java application |
duke@435 | 868 | FreeHeap(key); |
duke@435 | 869 | if (eq != NULL) { |
duke@435 | 870 | FreeHeap(value); |
duke@435 | 871 | } |
duke@435 | 872 | return true; |
duke@435 | 873 | } |
duke@435 | 874 | else if (strcmp(key, "java.vendor.url.bug") == 0) { |
duke@435 | 875 | // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
duke@435 | 876 | // its value without going through the property list or making a Java call. |
duke@435 | 877 | _java_vendor_url_bug = value; |
duke@435 | 878 | } |
duke@435 | 879 | |
duke@435 | 880 | // Create new property and add at the end of the list |
duke@435 | 881 | PropertyList_unique_add(&_system_properties, key, value); |
duke@435 | 882 | return true; |
duke@435 | 883 | } |
duke@435 | 884 | |
duke@435 | 885 | //=========================================================================================================== |
duke@435 | 886 | // Setting int/mixed/comp mode flags |
duke@435 | 887 | |
duke@435 | 888 | void Arguments::set_mode_flags(Mode mode) { |
duke@435 | 889 | // Set up default values for all flags. |
duke@435 | 890 | // If you add a flag to any of the branches below, |
duke@435 | 891 | // add a default value for it here. |
duke@435 | 892 | set_java_compiler(false); |
duke@435 | 893 | _mode = mode; |
duke@435 | 894 | |
duke@435 | 895 | // Ensure Agent_OnLoad has the correct initial values. |
duke@435 | 896 | // This may not be the final mode; mode may change later in onload phase. |
duke@435 | 897 | PropertyList_unique_add(&_system_properties, "java.vm.info", |
duke@435 | 898 | (char*)Abstract_VM_Version::vm_info_string()); |
duke@435 | 899 | |
duke@435 | 900 | UseInterpreter = true; |
duke@435 | 901 | UseCompiler = true; |
duke@435 | 902 | UseLoopCounter = true; |
duke@435 | 903 | |
duke@435 | 904 | // Default values may be platform/compiler dependent - |
duke@435 | 905 | // use the saved values |
duke@435 | 906 | ClipInlining = Arguments::_ClipInlining; |
duke@435 | 907 | AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; |
duke@435 | 908 | UseOnStackReplacement = Arguments::_UseOnStackReplacement; |
duke@435 | 909 | BackgroundCompilation = Arguments::_BackgroundCompilation; |
duke@435 | 910 | Tier2CompileThreshold = Arguments::_Tier2CompileThreshold; |
duke@435 | 911 | |
duke@435 | 912 | // Change from defaults based on mode |
duke@435 | 913 | switch (mode) { |
duke@435 | 914 | default: |
duke@435 | 915 | ShouldNotReachHere(); |
duke@435 | 916 | break; |
duke@435 | 917 | case _int: |
duke@435 | 918 | UseCompiler = false; |
duke@435 | 919 | UseLoopCounter = false; |
duke@435 | 920 | AlwaysCompileLoopMethods = false; |
duke@435 | 921 | UseOnStackReplacement = false; |
duke@435 | 922 | break; |
duke@435 | 923 | case _mixed: |
duke@435 | 924 | // same as default |
duke@435 | 925 | break; |
duke@435 | 926 | case _comp: |
duke@435 | 927 | UseInterpreter = false; |
duke@435 | 928 | BackgroundCompilation = false; |
duke@435 | 929 | ClipInlining = false; |
duke@435 | 930 | break; |
duke@435 | 931 | } |
duke@435 | 932 | } |
duke@435 | 933 | |
duke@435 | 934 | // Conflict: required to use shared spaces (-Xshare:on), but |
duke@435 | 935 | // incompatible command line options were chosen. |
duke@435 | 936 | |
duke@435 | 937 | static void no_shared_spaces() { |
duke@435 | 938 | if (RequireSharedSpaces) { |
duke@435 | 939 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 940 | "Class data sharing is inconsistent with other specified options.\n"); |
duke@435 | 941 | vm_exit_during_initialization("Unable to use shared archive.", NULL); |
duke@435 | 942 | } else { |
duke@435 | 943 | FLAG_SET_DEFAULT(UseSharedSpaces, false); |
duke@435 | 944 | } |
duke@435 | 945 | } |
duke@435 | 946 | |
duke@435 | 947 | // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
duke@435 | 948 | // if it's not explictly set or unset. If the user has chosen |
duke@435 | 949 | // UseParNewGC and not explicitly set ParallelGCThreads we |
duke@435 | 950 | // set it, unless this is a single cpu machine. |
duke@435 | 951 | void Arguments::set_parnew_gc_flags() { |
ysr@777 | 952 | assert(!UseSerialGC && !UseParallelGC && !UseG1GC, |
ysr@777 | 953 | "control point invariant"); |
ysr@777 | 954 | assert(UseParNewGC, "Error"); |
duke@435 | 955 | |
jmasa@445 | 956 | // Turn off AdaptiveSizePolicy by default for parnew until it is |
jmasa@445 | 957 | // complete. |
ysr@777 | 958 | if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
jmasa@445 | 959 | FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
jmasa@445 | 960 | } |
jmasa@445 | 961 | |
ysr@777 | 962 | if (ParallelGCThreads == 0) { |
jmasa@445 | 963 | FLAG_SET_DEFAULT(ParallelGCThreads, |
jmasa@445 | 964 | Abstract_VM_Version::parallel_worker_threads()); |
duke@435 | 965 | if (FLAG_IS_DEFAULT(ParallelGCThreads) && ParallelGCThreads == 1) { |
duke@435 | 966 | FLAG_SET_DEFAULT(UseParNewGC, false); |
duke@435 | 967 | } |
duke@435 | 968 | } |
duke@435 | 969 | if (!UseParNewGC) { |
duke@435 | 970 | FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
duke@435 | 971 | } else { |
duke@435 | 972 | no_shared_spaces(); |
duke@435 | 973 | |
duke@435 | 974 | // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 correspondinly, |
duke@435 | 975 | // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
duke@435 | 976 | // we set them to 1024 and 1024. |
duke@435 | 977 | // See CR 6362902. |
duke@435 | 978 | if (FLAG_IS_DEFAULT(YoungPLABSize)) { |
duke@435 | 979 | FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); |
duke@435 | 980 | } |
duke@435 | 981 | if (FLAG_IS_DEFAULT(OldPLABSize)) { |
duke@435 | 982 | FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); |
duke@435 | 983 | } |
duke@435 | 984 | |
duke@435 | 985 | // AlwaysTenure flag should make ParNew to promote all at first collection. |
duke@435 | 986 | // See CR 6362902. |
duke@435 | 987 | if (AlwaysTenure) { |
duke@435 | 988 | FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); |
duke@435 | 989 | } |
duke@435 | 990 | } |
duke@435 | 991 | } |
duke@435 | 992 | |
duke@435 | 993 | // Adjust some sizes to suit CMS and/or ParNew needs; these work well on |
duke@435 | 994 | // sparc/solaris for certain applications, but would gain from |
duke@435 | 995 | // further optimization and tuning efforts, and would almost |
duke@435 | 996 | // certainly gain from analysis of platform and environment. |
duke@435 | 997 | void Arguments::set_cms_and_parnew_gc_flags() { |
ysr@777 | 998 | assert(!UseSerialGC && !UseParallelGC, "Error"); |
jmasa@445 | 999 | assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
jmasa@445 | 1000 | |
duke@435 | 1001 | // If we are using CMS, we prefer to UseParNewGC, |
duke@435 | 1002 | // unless explicitly forbidden. |
ysr@777 | 1003 | if (FLAG_IS_DEFAULT(UseParNewGC)) { |
jmasa@445 | 1004 | FLAG_SET_ERGO(bool, UseParNewGC, true); |
duke@435 | 1005 | } |
duke@435 | 1006 | |
duke@435 | 1007 | // Turn off AdaptiveSizePolicy by default for cms until it is |
jmasa@445 | 1008 | // complete. |
jmasa@445 | 1009 | if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
duke@435 | 1010 | FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
duke@435 | 1011 | } |
duke@435 | 1012 | |
duke@435 | 1013 | // In either case, adjust ParallelGCThreads and/or UseParNewGC |
duke@435 | 1014 | // as needed. |
jmasa@445 | 1015 | if (UseParNewGC) { |
jmasa@445 | 1016 | set_parnew_gc_flags(); |
duke@435 | 1017 | } |
duke@435 | 1018 | |
duke@435 | 1019 | // Now make adjustments for CMS |
duke@435 | 1020 | size_t young_gen_per_worker; |
duke@435 | 1021 | intx new_ratio; |
duke@435 | 1022 | size_t min_new_default; |
duke@435 | 1023 | intx tenuring_default; |
duke@435 | 1024 | if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0 |
duke@435 | 1025 | if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) { |
jmasa@448 | 1026 | FLAG_SET_ERGO(intx, CMSYoungGenPerWorker, 4*M); |
duke@435 | 1027 | } |
duke@435 | 1028 | young_gen_per_worker = 4*M; |
duke@435 | 1029 | new_ratio = (intx)15; |
duke@435 | 1030 | min_new_default = 4*M; |
duke@435 | 1031 | tenuring_default = (intx)0; |
duke@435 | 1032 | } else { // new defaults: "new" as of 6.0 |
duke@435 | 1033 | young_gen_per_worker = CMSYoungGenPerWorker; |
duke@435 | 1034 | new_ratio = (intx)7; |
duke@435 | 1035 | min_new_default = 16*M; |
duke@435 | 1036 | tenuring_default = (intx)4; |
duke@435 | 1037 | } |
duke@435 | 1038 | |
duke@435 | 1039 | // Preferred young gen size for "short" pauses |
duke@435 | 1040 | const uintx parallel_gc_threads = |
duke@435 | 1041 | (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); |
duke@435 | 1042 | const size_t preferred_max_new_size_unaligned = |
duke@435 | 1043 | ScaleForWordSize(young_gen_per_worker * parallel_gc_threads); |
duke@435 | 1044 | const size_t preferred_max_new_size = |
duke@435 | 1045 | align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
duke@435 | 1046 | |
duke@435 | 1047 | // Unless explicitly requested otherwise, size young gen |
duke@435 | 1048 | // for "short" pauses ~ 4M*ParallelGCThreads |
duke@435 | 1049 | if (FLAG_IS_DEFAULT(MaxNewSize)) { // MaxNewSize not set at command-line |
duke@435 | 1050 | if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
jmasa@448 | 1051 | FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
duke@435 | 1052 | } else { |
jmasa@448 | 1053 | FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
duke@435 | 1054 | } |
jmasa@448 | 1055 | if(PrintGCDetails && Verbose) { |
jmasa@448 | 1056 | // Too early to use gclog_or_tty |
jmasa@448 | 1057 | tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
jmasa@448 | 1058 | } |
duke@435 | 1059 | } |
duke@435 | 1060 | // Unless explicitly requested otherwise, prefer a large |
duke@435 | 1061 | // Old to Young gen size so as to shift the collection load |
duke@435 | 1062 | // to the old generation concurrent collector |
duke@435 | 1063 | if (FLAG_IS_DEFAULT(NewRatio)) { |
jmasa@448 | 1064 | FLAG_SET_ERGO(intx, NewRatio, MAX2(NewRatio, new_ratio)); |
duke@435 | 1065 | |
duke@435 | 1066 | size_t min_new = align_size_up(ScaleForWordSize(min_new_default), os::vm_page_size()); |
duke@435 | 1067 | size_t prev_initial_size = initial_heap_size(); |
duke@435 | 1068 | if (prev_initial_size != 0 && prev_initial_size < min_new+OldSize) { |
duke@435 | 1069 | set_initial_heap_size(min_new+OldSize); |
duke@435 | 1070 | // Currently minimum size and the initial heap sizes are the same. |
duke@435 | 1071 | set_min_heap_size(initial_heap_size()); |
duke@435 | 1072 | if (PrintGCDetails && Verbose) { |
duke@435 | 1073 | warning("Initial heap size increased to " SIZE_FORMAT " M from " |
duke@435 | 1074 | SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", |
duke@435 | 1075 | initial_heap_size()/M, prev_initial_size/M); |
duke@435 | 1076 | } |
duke@435 | 1077 | } |
duke@435 | 1078 | // MaxHeapSize is aligned down in collectorPolicy |
duke@435 | 1079 | size_t max_heap = align_size_down(MaxHeapSize, |
duke@435 | 1080 | CardTableRS::ct_max_alignment_constraint()); |
duke@435 | 1081 | |
jmasa@448 | 1082 | if(PrintGCDetails && Verbose) { |
jmasa@448 | 1083 | // Too early to use gclog_or_tty |
jmasa@448 | 1084 | tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
jmasa@448 | 1085 | " initial_heap_size: " SIZE_FORMAT |
jmasa@448 | 1086 | " max_heap: " SIZE_FORMAT, |
jmasa@448 | 1087 | min_heap_size(), initial_heap_size(), max_heap); |
jmasa@448 | 1088 | } |
duke@435 | 1089 | if (max_heap > min_new) { |
duke@435 | 1090 | // Unless explicitly requested otherwise, make young gen |
duke@435 | 1091 | // at least min_new, and at most preferred_max_new_size. |
duke@435 | 1092 | if (FLAG_IS_DEFAULT(NewSize)) { |
jmasa@448 | 1093 | FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
jmasa@448 | 1094 | FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
jmasa@448 | 1095 | if(PrintGCDetails && Verbose) { |
jmasa@448 | 1096 | // Too early to use gclog_or_tty |
jmasa@448 | 1097 | tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); |
jmasa@448 | 1098 | } |
duke@435 | 1099 | } |
duke@435 | 1100 | // Unless explicitly requested otherwise, size old gen |
duke@435 | 1101 | // so that it's at least 3X of NewSize to begin with; |
duke@435 | 1102 | // later NewRatio will decide how it grows; see above. |
duke@435 | 1103 | if (FLAG_IS_DEFAULT(OldSize)) { |
duke@435 | 1104 | if (max_heap > NewSize) { |
jmasa@448 | 1105 | FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); |
jmasa@448 | 1106 | if(PrintGCDetails && Verbose) { |
jmasa@448 | 1107 | // Too early to use gclog_or_tty |
jmasa@448 | 1108 | tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); |
jmasa@448 | 1109 | } |
duke@435 | 1110 | } |
duke@435 | 1111 | } |
duke@435 | 1112 | } |
duke@435 | 1113 | } |
duke@435 | 1114 | // Unless explicitly requested otherwise, definitely |
duke@435 | 1115 | // promote all objects surviving "tenuring_default" scavenges. |
duke@435 | 1116 | if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && |
duke@435 | 1117 | FLAG_IS_DEFAULT(SurvivorRatio)) { |
jmasa@448 | 1118 | FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
duke@435 | 1119 | } |
duke@435 | 1120 | // If we decided above (or user explicitly requested) |
duke@435 | 1121 | // `promote all' (via MaxTenuringThreshold := 0), |
duke@435 | 1122 | // prefer minuscule survivor spaces so as not to waste |
duke@435 | 1123 | // space for (non-existent) survivors |
duke@435 | 1124 | if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { |
jmasa@448 | 1125 | FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
duke@435 | 1126 | } |
duke@435 | 1127 | // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, |
duke@435 | 1128 | // set CMSParPromoteBlocksToClaim equal to OldPLABSize. |
duke@435 | 1129 | // This is done in order to make ParNew+CMS configuration to work |
duke@435 | 1130 | // with YoungPLABSize and OldPLABSize options. |
duke@435 | 1131 | // See CR 6362902. |
duke@435 | 1132 | if (!FLAG_IS_DEFAULT(OldPLABSize)) { |
duke@435 | 1133 | if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
jmasa@448 | 1134 | // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
jmasa@448 | 1135 | // is. In this situtation let CMSParPromoteBlocksToClaim follow |
jmasa@448 | 1136 | // the value (either from the command line or ergonomics) of |
jmasa@448 | 1137 | // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
jmasa@448 | 1138 | FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
duke@435 | 1139 | } |
duke@435 | 1140 | else { |
duke@435 | 1141 | // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
duke@435 | 1142 | // CMSParPromoteBlocksToClaim is a collector-specific flag, so |
duke@435 | 1143 | // we'll let it to take precedence. |
duke@435 | 1144 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1145 | "Both OldPLABSize and CMSParPromoteBlocksToClaim options are specified " |
duke@435 | 1146 | "for the CMS collector. CMSParPromoteBlocksToClaim will take precedence.\n"); |
duke@435 | 1147 | } |
duke@435 | 1148 | } |
duke@435 | 1149 | } |
duke@435 | 1150 | |
coleenp@570 | 1151 | inline uintx max_heap_for_compressed_oops() { |
coleenp@570 | 1152 | LP64_ONLY(return oopDesc::OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); |
coleenp@570 | 1153 | NOT_LP64(return DefaultMaxRAM); |
coleenp@570 | 1154 | } |
coleenp@570 | 1155 | |
duke@435 | 1156 | bool Arguments::should_auto_select_low_pause_collector() { |
duke@435 | 1157 | if (UseAutoGCSelectPolicy && |
duke@435 | 1158 | !FLAG_IS_DEFAULT(MaxGCPauseMillis) && |
duke@435 | 1159 | (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { |
duke@435 | 1160 | if (PrintGCDetails) { |
duke@435 | 1161 | // Cannot use gclog_or_tty yet. |
duke@435 | 1162 | tty->print_cr("Automatic selection of the low pause collector" |
duke@435 | 1163 | " based on pause goal of %d (ms)", MaxGCPauseMillis); |
duke@435 | 1164 | } |
duke@435 | 1165 | return true; |
duke@435 | 1166 | } |
duke@435 | 1167 | return false; |
duke@435 | 1168 | } |
duke@435 | 1169 | |
duke@435 | 1170 | void Arguments::set_ergonomics_flags() { |
duke@435 | 1171 | // Parallel GC is not compatible with sharing. If one specifies |
duke@435 | 1172 | // that they want sharing explicitly, do not set ergonmics flags. |
duke@435 | 1173 | if (DumpSharedSpaces || ForceSharedSpaces) { |
duke@435 | 1174 | return; |
duke@435 | 1175 | } |
duke@435 | 1176 | |
duke@435 | 1177 | if (os::is_server_class_machine() && !force_client_mode ) { |
duke@435 | 1178 | // If no other collector is requested explicitly, |
duke@435 | 1179 | // let the VM select the collector based on |
duke@435 | 1180 | // machine class and automatic selection policy. |
duke@435 | 1181 | if (!UseSerialGC && |
duke@435 | 1182 | !UseConcMarkSweepGC && |
ysr@777 | 1183 | !UseG1GC && |
duke@435 | 1184 | !UseParNewGC && |
duke@435 | 1185 | !DumpSharedSpaces && |
duke@435 | 1186 | FLAG_IS_DEFAULT(UseParallelGC)) { |
duke@435 | 1187 | if (should_auto_select_low_pause_collector()) { |
duke@435 | 1188 | FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); |
duke@435 | 1189 | } else { |
duke@435 | 1190 | FLAG_SET_ERGO(bool, UseParallelGC, true); |
duke@435 | 1191 | } |
duke@435 | 1192 | no_shared_spaces(); |
duke@435 | 1193 | } |
duke@435 | 1194 | } |
coleenp@548 | 1195 | |
coleenp@548 | 1196 | #ifdef _LP64 |
coleenp@548 | 1197 | // Compressed Headers do not work with CMS, which uses a bit in the klass |
coleenp@548 | 1198 | // field offset to determine free list chunk markers. |
coleenp@548 | 1199 | // Check that UseCompressedOops can be set with the max heap size allocated |
coleenp@548 | 1200 | // by ergonomics. |
coleenp@622 | 1201 | if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
ysr@779 | 1202 | if (FLAG_IS_DEFAULT(UseCompressedOops) && !UseG1GC) { |
trims@674 | 1203 | // Turn off until bug is fixed. |
coleenp@622 | 1204 | // the following line to return it to default status. |
trims@674 | 1205 | // FLAG_SET_ERGO(bool, UseCompressedOops, true); |
ysr@779 | 1206 | } else if (UseCompressedOops && UseG1GC) { |
ysr@779 | 1207 | warning(" UseCompressedOops does not currently work with UseG1GC; switching off UseCompressedOops. "); |
ysr@779 | 1208 | FLAG_SET_DEFAULT(UseCompressedOops, false); |
coleenp@548 | 1209 | } |
coleenp@760 | 1210 | #ifdef _WIN64 |
coleenp@760 | 1211 | if (UseLargePages && UseCompressedOops) { |
coleenp@760 | 1212 | // Cannot allocate guard pages for implicit checks in indexed addressing |
coleenp@760 | 1213 | // mode, when large pages are specified on windows. |
kvn@1077 | 1214 | // This flag could be switched ON if narrow oop base address is set to 0, |
kvn@1077 | 1215 | // see code in Universe::initialize_heap(). |
kvn@1077 | 1216 | Universe::set_narrow_oop_use_implicit_null_checks(false); |
coleenp@760 | 1217 | } |
coleenp@760 | 1218 | #endif // _WIN64 |
coleenp@548 | 1219 | } else { |
coleenp@548 | 1220 | if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
ysr@779 | 1221 | warning("Max heap size too large for Compressed Oops"); |
coleenp@548 | 1222 | FLAG_SET_DEFAULT(UseCompressedOops, false); |
coleenp@548 | 1223 | } |
coleenp@548 | 1224 | } |
coleenp@548 | 1225 | // Also checks that certain machines are slower with compressed oops |
coleenp@548 | 1226 | // in vm_version initialization code. |
coleenp@548 | 1227 | #endif // _LP64 |
duke@435 | 1228 | } |
duke@435 | 1229 | |
duke@435 | 1230 | void Arguments::set_parallel_gc_flags() { |
ysr@777 | 1231 | assert(UseParallelGC || UseParallelOldGC, "Error"); |
duke@435 | 1232 | // If parallel old was requested, automatically enable parallel scavenge. |
duke@435 | 1233 | if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { |
duke@435 | 1234 | FLAG_SET_DEFAULT(UseParallelGC, true); |
duke@435 | 1235 | } |
duke@435 | 1236 | |
duke@435 | 1237 | // If no heap maximum was requested explicitly, use some reasonable fraction |
duke@435 | 1238 | // of the physical memory, up to a maximum of 1GB. |
duke@435 | 1239 | if (UseParallelGC) { |
jmasa@445 | 1240 | FLAG_SET_ERGO(uintx, ParallelGCThreads, |
jmasa@445 | 1241 | Abstract_VM_Version::parallel_worker_threads()); |
jmasa@445 | 1242 | |
ysr@777 | 1243 | // PS is a server collector, setup the heap sizes accordingly. |
ysr@777 | 1244 | set_server_heap_size(); |
duke@435 | 1245 | // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
duke@435 | 1246 | // SurvivorRatio has been set, reset their default values to SurvivorRatio + |
duke@435 | 1247 | // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. |
duke@435 | 1248 | // See CR 6362902 for details. |
duke@435 | 1249 | if (!FLAG_IS_DEFAULT(SurvivorRatio)) { |
duke@435 | 1250 | if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { |
duke@435 | 1251 | FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); |
duke@435 | 1252 | } |
duke@435 | 1253 | if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { |
duke@435 | 1254 | FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); |
duke@435 | 1255 | } |
duke@435 | 1256 | } |
duke@435 | 1257 | |
duke@435 | 1258 | if (UseParallelOldGC) { |
duke@435 | 1259 | // Par compact uses lower default values since they are treated as |
jmasa@448 | 1260 | // minimums. These are different defaults because of the different |
jmasa@448 | 1261 | // interpretation and are not ergonomically set. |
duke@435 | 1262 | if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
jmasa@448 | 1263 | FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
duke@435 | 1264 | } |
duke@435 | 1265 | if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { |
jmasa@448 | 1266 | FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
duke@435 | 1267 | } |
duke@435 | 1268 | } |
duke@435 | 1269 | } |
duke@435 | 1270 | } |
duke@435 | 1271 | |
ysr@777 | 1272 | void Arguments::set_g1_gc_flags() { |
ysr@777 | 1273 | assert(UseG1GC, "Error"); |
ysr@777 | 1274 | // G1 is a server collector, setup the heap sizes accordingly. |
ysr@777 | 1275 | set_server_heap_size(); |
ysr@777 | 1276 | #ifdef COMPILER1 |
ysr@777 | 1277 | FastTLABRefill = false; |
ysr@777 | 1278 | #endif |
ysr@777 | 1279 | FLAG_SET_DEFAULT(ParallelGCThreads, |
ysr@777 | 1280 | Abstract_VM_Version::parallel_worker_threads()); |
ysr@777 | 1281 | if (ParallelGCThreads == 0) { |
ysr@777 | 1282 | FLAG_SET_DEFAULT(ParallelGCThreads, |
ysr@777 | 1283 | Abstract_VM_Version::parallel_worker_threads |
ysr@777 | 1284 | ()); |
ysr@777 | 1285 | } |
ysr@777 | 1286 | no_shared_spaces(); |
ysr@777 | 1287 | } |
ysr@777 | 1288 | |
ysr@777 | 1289 | void Arguments::set_server_heap_size() { |
ysr@777 | 1290 | if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
ysr@777 | 1291 | const uint64_t reasonable_fraction = |
ysr@777 | 1292 | os::physical_memory() / DefaultMaxRAMFraction; |
ysr@777 | 1293 | const uint64_t maximum_size = (uint64_t) |
ysr@777 | 1294 | (FLAG_IS_DEFAULT(DefaultMaxRAM) && UseCompressedOops ? |
ysr@777 | 1295 | MIN2(max_heap_for_compressed_oops(), DefaultMaxRAM) : |
ysr@777 | 1296 | DefaultMaxRAM); |
ysr@777 | 1297 | size_t reasonable_max = |
ysr@777 | 1298 | (size_t) os::allocatable_physical_memory(reasonable_fraction); |
ysr@777 | 1299 | if (reasonable_max > maximum_size) { |
ysr@777 | 1300 | reasonable_max = maximum_size; |
ysr@777 | 1301 | } |
ysr@777 | 1302 | if (PrintGCDetails && Verbose) { |
ysr@777 | 1303 | // Cannot use gclog_or_tty yet. |
ysr@777 | 1304 | tty->print_cr(" Max heap size for server class platform " |
ysr@777 | 1305 | SIZE_FORMAT, reasonable_max); |
ysr@777 | 1306 | } |
ysr@777 | 1307 | // If the initial_heap_size has not been set with -Xms, |
ysr@777 | 1308 | // then set it as fraction of size of physical memory |
ysr@777 | 1309 | // respecting the maximum and minimum sizes of the heap. |
ysr@777 | 1310 | if (initial_heap_size() == 0) { |
ysr@777 | 1311 | const uint64_t reasonable_initial_fraction = |
ysr@777 | 1312 | os::physical_memory() / DefaultInitialRAMFraction; |
ysr@777 | 1313 | const size_t reasonable_initial = |
ysr@777 | 1314 | (size_t) os::allocatable_physical_memory(reasonable_initial_fraction); |
ysr@777 | 1315 | const size_t minimum_size = NewSize + OldSize; |
ysr@777 | 1316 | set_initial_heap_size(MAX2(MIN2(reasonable_initial, reasonable_max), |
ysr@777 | 1317 | minimum_size)); |
ysr@777 | 1318 | // Currently the minimum size and the initial heap sizes are the same. |
ysr@777 | 1319 | set_min_heap_size(initial_heap_size()); |
ysr@777 | 1320 | if (PrintGCDetails && Verbose) { |
ysr@777 | 1321 | // Cannot use gclog_or_tty yet. |
ysr@777 | 1322 | tty->print_cr(" Initial heap size for server class platform " |
ysr@777 | 1323 | SIZE_FORMAT, initial_heap_size()); |
ysr@777 | 1324 | } |
ysr@777 | 1325 | } else { |
ysr@777 | 1326 | // A minimum size was specified on the command line. Be sure |
ysr@777 | 1327 | // that the maximum size is consistent. |
ysr@777 | 1328 | if (initial_heap_size() > reasonable_max) { |
ysr@777 | 1329 | reasonable_max = initial_heap_size(); |
ysr@777 | 1330 | } |
ysr@777 | 1331 | } |
ysr@777 | 1332 | FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx) reasonable_max); |
ysr@777 | 1333 | } |
ysr@777 | 1334 | } |
ysr@777 | 1335 | |
duke@435 | 1336 | // This must be called after ergonomics because we want bytecode rewriting |
duke@435 | 1337 | // if the server compiler is used, or if UseSharedSpaces is disabled. |
duke@435 | 1338 | void Arguments::set_bytecode_flags() { |
duke@435 | 1339 | // Better not attempt to store into a read-only space. |
duke@435 | 1340 | if (UseSharedSpaces) { |
duke@435 | 1341 | FLAG_SET_DEFAULT(RewriteBytecodes, false); |
duke@435 | 1342 | FLAG_SET_DEFAULT(RewriteFrequentPairs, false); |
duke@435 | 1343 | } |
duke@435 | 1344 | |
duke@435 | 1345 | if (!RewriteBytecodes) { |
duke@435 | 1346 | FLAG_SET_DEFAULT(RewriteFrequentPairs, false); |
duke@435 | 1347 | } |
duke@435 | 1348 | } |
duke@435 | 1349 | |
duke@435 | 1350 | // Aggressive optimization flags -XX:+AggressiveOpts |
duke@435 | 1351 | void Arguments::set_aggressive_opts_flags() { |
never@452 | 1352 | #ifdef COMPILER2 |
never@452 | 1353 | if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
never@452 | 1354 | if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
never@452 | 1355 | FLAG_SET_DEFAULT(EliminateAutoBox, true); |
never@452 | 1356 | } |
never@452 | 1357 | if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
never@452 | 1358 | FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
never@452 | 1359 | } |
never@452 | 1360 | |
never@452 | 1361 | // Feed the cache size setting into the JDK |
never@452 | 1362 | char buffer[1024]; |
xlu@948 | 1363 | sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
never@452 | 1364 | add_property(buffer); |
never@452 | 1365 | } |
kvn@500 | 1366 | if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
kvn@500 | 1367 | FLAG_SET_DEFAULT(DoEscapeAnalysis, true); |
kvn@500 | 1368 | } |
rasbold@604 | 1369 | if (AggressiveOpts && FLAG_IS_DEFAULT(SpecialArraysEquals)) { |
rasbold@604 | 1370 | FLAG_SET_DEFAULT(SpecialArraysEquals, true); |
rasbold@604 | 1371 | } |
never@851 | 1372 | if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
never@851 | 1373 | FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
never@851 | 1374 | } |
never@452 | 1375 | #endif |
never@452 | 1376 | |
duke@435 | 1377 | if (AggressiveOpts) { |
sbohne@496 | 1378 | // Sample flag setting code |
sbohne@496 | 1379 | // if (FLAG_IS_DEFAULT(EliminateZeroing)) { |
sbohne@496 | 1380 | // FLAG_SET_DEFAULT(EliminateZeroing, true); |
sbohne@496 | 1381 | // } |
duke@435 | 1382 | } |
duke@435 | 1383 | } |
duke@435 | 1384 | |
duke@435 | 1385 | //=========================================================================================================== |
duke@435 | 1386 | // Parsing of java.compiler property |
duke@435 | 1387 | |
duke@435 | 1388 | void Arguments::process_java_compiler_argument(char* arg) { |
duke@435 | 1389 | // For backwards compatibility, Djava.compiler=NONE or "" |
duke@435 | 1390 | // causes us to switch to -Xint mode UNLESS -Xdebug |
duke@435 | 1391 | // is also specified. |
duke@435 | 1392 | if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { |
duke@435 | 1393 | set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. |
duke@435 | 1394 | } |
duke@435 | 1395 | } |
duke@435 | 1396 | |
duke@435 | 1397 | void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { |
duke@435 | 1398 | _sun_java_launcher = strdup(launcher); |
duke@435 | 1399 | } |
duke@435 | 1400 | |
duke@435 | 1401 | bool Arguments::created_by_java_launcher() { |
duke@435 | 1402 | assert(_sun_java_launcher != NULL, "property must have value"); |
duke@435 | 1403 | return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; |
duke@435 | 1404 | } |
duke@435 | 1405 | |
duke@435 | 1406 | //=========================================================================================================== |
duke@435 | 1407 | // Parsing of main arguments |
duke@435 | 1408 | |
duke@435 | 1409 | bool Arguments::verify_percentage(uintx value, const char* name) { |
duke@435 | 1410 | if (value <= 100) { |
duke@435 | 1411 | return true; |
duke@435 | 1412 | } |
duke@435 | 1413 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1414 | "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", |
duke@435 | 1415 | name, value); |
duke@435 | 1416 | return false; |
duke@435 | 1417 | } |
duke@435 | 1418 | |
duke@435 | 1419 | static void set_serial_gc_flags() { |
duke@435 | 1420 | FLAG_SET_DEFAULT(UseSerialGC, true); |
duke@435 | 1421 | FLAG_SET_DEFAULT(UseParNewGC, false); |
duke@435 | 1422 | FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); |
duke@435 | 1423 | FLAG_SET_DEFAULT(UseParallelGC, false); |
duke@435 | 1424 | FLAG_SET_DEFAULT(UseParallelOldGC, false); |
ysr@777 | 1425 | FLAG_SET_DEFAULT(UseG1GC, false); |
duke@435 | 1426 | } |
duke@435 | 1427 | |
duke@435 | 1428 | static bool verify_serial_gc_flags() { |
duke@435 | 1429 | return (UseSerialGC && |
ysr@777 | 1430 | !(UseParNewGC || UseConcMarkSweepGC || UseG1GC || |
ysr@777 | 1431 | UseParallelGC || UseParallelOldGC)); |
duke@435 | 1432 | } |
duke@435 | 1433 | |
jmasa@445 | 1434 | // Check consistency of GC selection |
jmasa@445 | 1435 | bool Arguments::check_gc_consistency() { |
jmasa@445 | 1436 | bool status = true; |
jmasa@445 | 1437 | // Ensure that the user has not selected conflicting sets |
jmasa@445 | 1438 | // of collectors. [Note: this check is merely a user convenience; |
jmasa@445 | 1439 | // collectors over-ride each other so that only a non-conflicting |
jmasa@445 | 1440 | // set is selected; however what the user gets is not what they |
jmasa@445 | 1441 | // may have expected from the combination they asked for. It's |
jmasa@445 | 1442 | // better to reduce user confusion by not allowing them to |
jmasa@445 | 1443 | // select conflicting combinations. |
jmasa@445 | 1444 | uint i = 0; |
jmasa@445 | 1445 | if (UseSerialGC) i++; |
jmasa@445 | 1446 | if (UseConcMarkSweepGC || UseParNewGC) i++; |
jmasa@445 | 1447 | if (UseParallelGC || UseParallelOldGC) i++; |
jmasa@445 | 1448 | if (i > 1) { |
jmasa@445 | 1449 | jio_fprintf(defaultStream::error_stream(), |
jmasa@445 | 1450 | "Conflicting collector combinations in option list; " |
jmasa@445 | 1451 | "please refer to the release notes for the combinations " |
jmasa@445 | 1452 | "allowed\n"); |
jmasa@445 | 1453 | status = false; |
jmasa@445 | 1454 | } |
jmasa@445 | 1455 | |
jmasa@445 | 1456 | return status; |
jmasa@445 | 1457 | } |
jmasa@445 | 1458 | |
duke@435 | 1459 | // Check the consistency of vm_init_args |
duke@435 | 1460 | bool Arguments::check_vm_args_consistency() { |
duke@435 | 1461 | // Method for adding checks for flag consistency. |
duke@435 | 1462 | // The intent is to warn the user of all possible conflicts, |
duke@435 | 1463 | // before returning an error. |
duke@435 | 1464 | // Note: Needs platform-dependent factoring. |
duke@435 | 1465 | bool status = true; |
duke@435 | 1466 | |
duke@435 | 1467 | #if ( (defined(COMPILER2) && defined(SPARC))) |
duke@435 | 1468 | // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init |
duke@435 | 1469 | // on sparc doesn't require generation of a stub as is the case on, e.g., |
duke@435 | 1470 | // x86. Normally, VM_Version_init must be called from init_globals in |
duke@435 | 1471 | // init.cpp, which is called by the initial java thread *after* arguments |
duke@435 | 1472 | // have been parsed. VM_Version_init gets called twice on sparc. |
duke@435 | 1473 | extern void VM_Version_init(); |
duke@435 | 1474 | VM_Version_init(); |
duke@435 | 1475 | if (!VM_Version::has_v9()) { |
duke@435 | 1476 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1477 | "V8 Machine detected, Server requires V9\n"); |
duke@435 | 1478 | status = false; |
duke@435 | 1479 | } |
duke@435 | 1480 | #endif /* COMPILER2 && SPARC */ |
duke@435 | 1481 | |
duke@435 | 1482 | // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product |
duke@435 | 1483 | // builds so the cost of stack banging can be measured. |
duke@435 | 1484 | #if (defined(PRODUCT) && defined(SOLARIS)) |
duke@435 | 1485 | if (!UseBoundThreads && !UseStackBanging) { |
duke@435 | 1486 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1487 | "-UseStackBanging conflicts with -UseBoundThreads\n"); |
duke@435 | 1488 | |
duke@435 | 1489 | status = false; |
duke@435 | 1490 | } |
duke@435 | 1491 | #endif |
duke@435 | 1492 | |
duke@435 | 1493 | if (TLABRefillWasteFraction == 0) { |
duke@435 | 1494 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1495 | "TLABRefillWasteFraction should be a denominator, " |
duke@435 | 1496 | "not " SIZE_FORMAT "\n", |
duke@435 | 1497 | TLABRefillWasteFraction); |
duke@435 | 1498 | status = false; |
duke@435 | 1499 | } |
duke@435 | 1500 | |
jmasa@445 | 1501 | status = status && verify_percentage(MaxLiveObjectEvacuationRatio, |
duke@435 | 1502 | "MaxLiveObjectEvacuationRatio"); |
jmasa@445 | 1503 | status = status && verify_percentage(AdaptiveSizePolicyWeight, |
duke@435 | 1504 | "AdaptiveSizePolicyWeight"); |
jmasa@445 | 1505 | status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
jmasa@445 | 1506 | status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
jmasa@445 | 1507 | status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
jmasa@445 | 1508 | status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
duke@435 | 1509 | |
duke@435 | 1510 | if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
duke@435 | 1511 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1512 | "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " |
duke@435 | 1513 | "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", |
duke@435 | 1514 | MinHeapFreeRatio, MaxHeapFreeRatio); |
duke@435 | 1515 | status = false; |
duke@435 | 1516 | } |
duke@435 | 1517 | // Keeping the heap 100% free is hard ;-) so limit it to 99%. |
duke@435 | 1518 | MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); |
duke@435 | 1519 | |
duke@435 | 1520 | if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { |
duke@435 | 1521 | MarkSweepAlwaysCompactCount = 1; // Move objects every gc. |
duke@435 | 1522 | } |
duke@435 | 1523 | |
jcoomes@918 | 1524 | if (UseParallelOldGC && ParallelOldGCSplitALot) { |
jcoomes@918 | 1525 | // Settings to encourage splitting. |
jcoomes@918 | 1526 | if (!FLAG_IS_CMDLINE(NewRatio)) { |
jcoomes@918 | 1527 | FLAG_SET_CMDLINE(intx, NewRatio, 2); |
jcoomes@918 | 1528 | } |
jcoomes@918 | 1529 | if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
jcoomes@918 | 1530 | FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
jcoomes@918 | 1531 | } |
jcoomes@918 | 1532 | } |
jcoomes@918 | 1533 | |
jmasa@445 | 1534 | status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
jmasa@445 | 1535 | status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
duke@435 | 1536 | if (GCTimeLimit == 100) { |
duke@435 | 1537 | // Turn off gc-overhead-limit-exceeded checks |
duke@435 | 1538 | FLAG_SET_DEFAULT(UseGCOverheadLimit, false); |
duke@435 | 1539 | } |
duke@435 | 1540 | |
jmasa@445 | 1541 | status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
duke@435 | 1542 | |
duke@435 | 1543 | // Check user specified sharing option conflict with Parallel GC |
ysr@777 | 1544 | bool cannot_share = (UseConcMarkSweepGC || UseG1GC || UseParNewGC || |
ysr@777 | 1545 | UseParallelGC || UseParallelOldGC || |
duke@435 | 1546 | SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages)); |
duke@435 | 1547 | |
duke@435 | 1548 | if (cannot_share) { |
duke@435 | 1549 | // Either force sharing on by forcing the other options off, or |
duke@435 | 1550 | // force sharing off. |
duke@435 | 1551 | if (DumpSharedSpaces || ForceSharedSpaces) { |
duke@435 | 1552 | set_serial_gc_flags(); |
duke@435 | 1553 | FLAG_SET_DEFAULT(SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages), false); |
duke@435 | 1554 | } else { |
duke@435 | 1555 | no_shared_spaces(); |
duke@435 | 1556 | } |
duke@435 | 1557 | } |
duke@435 | 1558 | |
jmasa@445 | 1559 | status = status && check_gc_consistency(); |
duke@435 | 1560 | |
duke@435 | 1561 | if (_has_alloc_profile) { |
duke@435 | 1562 | if (UseParallelGC || UseParallelOldGC) { |
duke@435 | 1563 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1564 | "error: invalid argument combination.\n" |
duke@435 | 1565 | "Allocation profiling (-Xaprof) cannot be used together with " |
duke@435 | 1566 | "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); |
duke@435 | 1567 | status = false; |
duke@435 | 1568 | } |
duke@435 | 1569 | if (UseConcMarkSweepGC) { |
duke@435 | 1570 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1571 | "error: invalid argument combination.\n" |
duke@435 | 1572 | "Allocation profiling (-Xaprof) cannot be used together with " |
duke@435 | 1573 | "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); |
duke@435 | 1574 | status = false; |
duke@435 | 1575 | } |
duke@435 | 1576 | } |
duke@435 | 1577 | |
duke@435 | 1578 | if (CMSIncrementalMode) { |
duke@435 | 1579 | if (!UseConcMarkSweepGC) { |
duke@435 | 1580 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1581 | "error: invalid argument combination.\n" |
duke@435 | 1582 | "The CMS collector (-XX:+UseConcMarkSweepGC) must be " |
duke@435 | 1583 | "selected in order\nto use CMSIncrementalMode.\n"); |
duke@435 | 1584 | status = false; |
duke@435 | 1585 | } else { |
jmasa@445 | 1586 | status = status && verify_percentage(CMSIncrementalDutyCycle, |
duke@435 | 1587 | "CMSIncrementalDutyCycle"); |
jmasa@445 | 1588 | status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
duke@435 | 1589 | "CMSIncrementalDutyCycleMin"); |
jmasa@445 | 1590 | status = status && verify_percentage(CMSIncrementalSafetyFactor, |
duke@435 | 1591 | "CMSIncrementalSafetyFactor"); |
jmasa@445 | 1592 | status = status && verify_percentage(CMSIncrementalOffset, |
duke@435 | 1593 | "CMSIncrementalOffset"); |
jmasa@445 | 1594 | status = status && verify_percentage(CMSExpAvgFactor, |
duke@435 | 1595 | "CMSExpAvgFactor"); |
duke@435 | 1596 | // If it was not set on the command line, set |
duke@435 | 1597 | // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. |
duke@435 | 1598 | if (CMSInitiatingOccupancyFraction < 0) { |
duke@435 | 1599 | FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); |
duke@435 | 1600 | } |
duke@435 | 1601 | } |
duke@435 | 1602 | } |
duke@435 | 1603 | |
duke@435 | 1604 | // CMS space iteration, which FLSVerifyAllHeapreferences entails, |
duke@435 | 1605 | // insists that we hold the requisite locks so that the iteration is |
duke@435 | 1606 | // MT-safe. For the verification at start-up and shut-down, we don't |
duke@435 | 1607 | // yet have a good way of acquiring and releasing these locks, |
duke@435 | 1608 | // which are not visible at the CollectedHeap level. We want to |
duke@435 | 1609 | // be able to acquire these locks and then do the iteration rather |
duke@435 | 1610 | // than just disable the lock verification. This will be fixed under |
duke@435 | 1611 | // bug 4788986. |
duke@435 | 1612 | if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { |
duke@435 | 1613 | if (VerifyGCStartAt == 0) { |
duke@435 | 1614 | warning("Heap verification at start-up disabled " |
duke@435 | 1615 | "(due to current incompatibility with FLSVerifyAllHeapReferences)"); |
duke@435 | 1616 | VerifyGCStartAt = 1; // Disable verification at start-up |
duke@435 | 1617 | } |
duke@435 | 1618 | if (VerifyBeforeExit) { |
duke@435 | 1619 | warning("Heap verification at shutdown disabled " |
duke@435 | 1620 | "(due to current incompatibility with FLSVerifyAllHeapReferences)"); |
duke@435 | 1621 | VerifyBeforeExit = false; // Disable verification at shutdown |
duke@435 | 1622 | } |
duke@435 | 1623 | } |
duke@435 | 1624 | |
duke@435 | 1625 | // Note: only executed in non-PRODUCT mode |
duke@435 | 1626 | if (!UseAsyncConcMarkSweepGC && |
duke@435 | 1627 | (ExplicitGCInvokesConcurrent || |
duke@435 | 1628 | ExplicitGCInvokesConcurrentAndUnloadsClasses)) { |
duke@435 | 1629 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1630 | "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
duke@435 | 1631 | " with -UseAsyncConcMarkSweepGC"); |
duke@435 | 1632 | status = false; |
duke@435 | 1633 | } |
duke@435 | 1634 | |
duke@435 | 1635 | return status; |
duke@435 | 1636 | } |
duke@435 | 1637 | |
duke@435 | 1638 | bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, |
duke@435 | 1639 | const char* option_type) { |
duke@435 | 1640 | if (ignore) return false; |
duke@435 | 1641 | |
duke@435 | 1642 | const char* spacer = " "; |
duke@435 | 1643 | if (option_type == NULL) { |
duke@435 | 1644 | option_type = ++spacer; // Set both to the empty string. |
duke@435 | 1645 | } |
duke@435 | 1646 | |
duke@435 | 1647 | if (os::obsolete_option(option)) { |
duke@435 | 1648 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1649 | "Obsolete %s%soption: %s\n", option_type, spacer, |
duke@435 | 1650 | option->optionString); |
duke@435 | 1651 | return false; |
duke@435 | 1652 | } else { |
duke@435 | 1653 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1654 | "Unrecognized %s%soption: %s\n", option_type, spacer, |
duke@435 | 1655 | option->optionString); |
duke@435 | 1656 | return true; |
duke@435 | 1657 | } |
duke@435 | 1658 | } |
duke@435 | 1659 | |
duke@435 | 1660 | static const char* user_assertion_options[] = { |
duke@435 | 1661 | "-da", "-ea", "-disableassertions", "-enableassertions", 0 |
duke@435 | 1662 | }; |
duke@435 | 1663 | |
duke@435 | 1664 | static const char* system_assertion_options[] = { |
duke@435 | 1665 | "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 |
duke@435 | 1666 | }; |
duke@435 | 1667 | |
duke@435 | 1668 | // Return true if any of the strings in null-terminated array 'names' matches. |
duke@435 | 1669 | // If tail_allowed is true, then the tail must begin with a colon; otherwise, |
duke@435 | 1670 | // the option must match exactly. |
duke@435 | 1671 | static bool match_option(const JavaVMOption* option, const char** names, const char** tail, |
duke@435 | 1672 | bool tail_allowed) { |
duke@435 | 1673 | for (/* empty */; *names != NULL; ++names) { |
duke@435 | 1674 | if (match_option(option, *names, tail)) { |
duke@435 | 1675 | if (**tail == '\0' || tail_allowed && **tail == ':') { |
duke@435 | 1676 | return true; |
duke@435 | 1677 | } |
duke@435 | 1678 | } |
duke@435 | 1679 | } |
duke@435 | 1680 | return false; |
duke@435 | 1681 | } |
duke@435 | 1682 | |
duke@435 | 1683 | Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
swamyv@924 | 1684 | julong* long_arg, |
swamyv@924 | 1685 | julong min_size) { |
swamyv@924 | 1686 | if (!atomull(s, long_arg)) return arg_unreadable; |
duke@435 | 1687 | return check_memory_size(*long_arg, min_size); |
duke@435 | 1688 | } |
duke@435 | 1689 | |
duke@435 | 1690 | // Parse JavaVMInitArgs structure |
duke@435 | 1691 | |
duke@435 | 1692 | jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { |
duke@435 | 1693 | // For components of the system classpath. |
duke@435 | 1694 | SysClassPath scp(Arguments::get_sysclasspath()); |
duke@435 | 1695 | bool scp_assembly_required = false; |
duke@435 | 1696 | |
duke@435 | 1697 | // Save default settings for some mode flags |
duke@435 | 1698 | Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; |
duke@435 | 1699 | Arguments::_UseOnStackReplacement = UseOnStackReplacement; |
duke@435 | 1700 | Arguments::_ClipInlining = ClipInlining; |
duke@435 | 1701 | Arguments::_BackgroundCompilation = BackgroundCompilation; |
duke@435 | 1702 | Arguments::_Tier2CompileThreshold = Tier2CompileThreshold; |
duke@435 | 1703 | |
duke@435 | 1704 | // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
duke@435 | 1705 | jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); |
duke@435 | 1706 | if (result != JNI_OK) { |
duke@435 | 1707 | return result; |
duke@435 | 1708 | } |
duke@435 | 1709 | |
duke@435 | 1710 | // Parse JavaVMInitArgs structure passed in |
duke@435 | 1711 | result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); |
duke@435 | 1712 | if (result != JNI_OK) { |
duke@435 | 1713 | return result; |
duke@435 | 1714 | } |
duke@435 | 1715 | |
phh@966 | 1716 | if (AggressiveOpts) { |
phh@966 | 1717 | // Insert alt-rt.jar between user-specified bootclasspath |
phh@966 | 1718 | // prefix and the default bootclasspath. os::set_boot_path() |
phh@966 | 1719 | // uses meta_index_dir as the default bootclasspath directory. |
phh@966 | 1720 | const char* altclasses_jar = "alt-rt.jar"; |
phh@966 | 1721 | size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
phh@966 | 1722 | strlen(altclasses_jar); |
phh@966 | 1723 | char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
phh@966 | 1724 | strcpy(altclasses_path, get_meta_index_dir()); |
phh@966 | 1725 | strcat(altclasses_path, altclasses_jar); |
phh@966 | 1726 | scp.add_suffix_to_prefix(altclasses_path); |
phh@966 | 1727 | scp_assembly_required = true; |
phh@966 | 1728 | FREE_C_HEAP_ARRAY(char, altclasses_path); |
phh@966 | 1729 | } |
phh@966 | 1730 | |
duke@435 | 1731 | // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
duke@435 | 1732 | result = parse_java_options_environment_variable(&scp, &scp_assembly_required); |
duke@435 | 1733 | if (result != JNI_OK) { |
duke@435 | 1734 | return result; |
duke@435 | 1735 | } |
duke@435 | 1736 | |
duke@435 | 1737 | // Do final processing now that all arguments have been parsed |
duke@435 | 1738 | result = finalize_vm_init_args(&scp, scp_assembly_required); |
duke@435 | 1739 | if (result != JNI_OK) { |
duke@435 | 1740 | return result; |
duke@435 | 1741 | } |
duke@435 | 1742 | |
duke@435 | 1743 | return JNI_OK; |
duke@435 | 1744 | } |
duke@435 | 1745 | |
duke@435 | 1746 | jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, |
duke@435 | 1747 | SysClassPath* scp_p, |
duke@435 | 1748 | bool* scp_assembly_required_p, |
duke@435 | 1749 | FlagValueOrigin origin) { |
duke@435 | 1750 | // Remaining part of option string |
duke@435 | 1751 | const char* tail; |
duke@435 | 1752 | |
duke@435 | 1753 | // iterate over arguments |
duke@435 | 1754 | for (int index = 0; index < args->nOptions; index++) { |
duke@435 | 1755 | bool is_absolute_path = false; // for -agentpath vs -agentlib |
duke@435 | 1756 | |
duke@435 | 1757 | const JavaVMOption* option = args->options + index; |
duke@435 | 1758 | |
duke@435 | 1759 | if (!match_option(option, "-Djava.class.path", &tail) && |
duke@435 | 1760 | !match_option(option, "-Dsun.java.command", &tail) && |
duke@435 | 1761 | !match_option(option, "-Dsun.java.launcher", &tail)) { |
duke@435 | 1762 | |
duke@435 | 1763 | // add all jvm options to the jvm_args string. This string |
duke@435 | 1764 | // is used later to set the java.vm.args PerfData string constant. |
duke@435 | 1765 | // the -Djava.class.path and the -Dsun.java.command options are |
duke@435 | 1766 | // omitted from jvm_args string as each have their own PerfData |
duke@435 | 1767 | // string constant object. |
duke@435 | 1768 | build_jvm_args(option->optionString); |
duke@435 | 1769 | } |
duke@435 | 1770 | |
duke@435 | 1771 | // -verbose:[class/gc/jni] |
duke@435 | 1772 | if (match_option(option, "-verbose", &tail)) { |
duke@435 | 1773 | if (!strcmp(tail, ":class") || !strcmp(tail, "")) { |
duke@435 | 1774 | FLAG_SET_CMDLINE(bool, TraceClassLoading, true); |
duke@435 | 1775 | FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); |
duke@435 | 1776 | } else if (!strcmp(tail, ":gc")) { |
duke@435 | 1777 | FLAG_SET_CMDLINE(bool, PrintGC, true); |
duke@435 | 1778 | FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); |
duke@435 | 1779 | } else if (!strcmp(tail, ":jni")) { |
duke@435 | 1780 | FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); |
duke@435 | 1781 | } |
duke@435 | 1782 | // -da / -ea / -disableassertions / -enableassertions |
duke@435 | 1783 | // These accept an optional class/package name separated by a colon, e.g., |
duke@435 | 1784 | // -da:java.lang.Thread. |
duke@435 | 1785 | } else if (match_option(option, user_assertion_options, &tail, true)) { |
duke@435 | 1786 | bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' |
duke@435 | 1787 | if (*tail == '\0') { |
duke@435 | 1788 | JavaAssertions::setUserClassDefault(enable); |
duke@435 | 1789 | } else { |
duke@435 | 1790 | assert(*tail == ':', "bogus match by match_option()"); |
duke@435 | 1791 | JavaAssertions::addOption(tail + 1, enable); |
duke@435 | 1792 | } |
duke@435 | 1793 | // -dsa / -esa / -disablesystemassertions / -enablesystemassertions |
duke@435 | 1794 | } else if (match_option(option, system_assertion_options, &tail, false)) { |
duke@435 | 1795 | bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' |
duke@435 | 1796 | JavaAssertions::setSystemClassDefault(enable); |
duke@435 | 1797 | // -bootclasspath: |
duke@435 | 1798 | } else if (match_option(option, "-Xbootclasspath:", &tail)) { |
duke@435 | 1799 | scp_p->reset_path(tail); |
duke@435 | 1800 | *scp_assembly_required_p = true; |
duke@435 | 1801 | // -bootclasspath/a: |
duke@435 | 1802 | } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { |
duke@435 | 1803 | scp_p->add_suffix(tail); |
duke@435 | 1804 | *scp_assembly_required_p = true; |
duke@435 | 1805 | // -bootclasspath/p: |
duke@435 | 1806 | } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { |
duke@435 | 1807 | scp_p->add_prefix(tail); |
duke@435 | 1808 | *scp_assembly_required_p = true; |
duke@435 | 1809 | // -Xrun |
duke@435 | 1810 | } else if (match_option(option, "-Xrun", &tail)) { |
phh@966 | 1811 | if (tail != NULL) { |
duke@435 | 1812 | const char* pos = strchr(tail, ':'); |
duke@435 | 1813 | size_t len = (pos == NULL) ? strlen(tail) : pos - tail; |
duke@435 | 1814 | char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); |
duke@435 | 1815 | name[len] = '\0'; |
duke@435 | 1816 | |
duke@435 | 1817 | char *options = NULL; |
duke@435 | 1818 | if(pos != NULL) { |
duke@435 | 1819 | size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. |
duke@435 | 1820 | options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); |
duke@435 | 1821 | } |
duke@435 | 1822 | #ifdef JVMTI_KERNEL |
duke@435 | 1823 | if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
duke@435 | 1824 | warning("profiling and debugging agents are not supported with Kernel VM"); |
duke@435 | 1825 | } else |
duke@435 | 1826 | #endif // JVMTI_KERNEL |
duke@435 | 1827 | add_init_library(name, options); |
duke@435 | 1828 | } |
duke@435 | 1829 | // -agentlib and -agentpath |
duke@435 | 1830 | } else if (match_option(option, "-agentlib:", &tail) || |
duke@435 | 1831 | (is_absolute_path = match_option(option, "-agentpath:", &tail))) { |
duke@435 | 1832 | if(tail != NULL) { |
duke@435 | 1833 | const char* pos = strchr(tail, '='); |
duke@435 | 1834 | size_t len = (pos == NULL) ? strlen(tail) : pos - tail; |
duke@435 | 1835 | char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); |
duke@435 | 1836 | name[len] = '\0'; |
duke@435 | 1837 | |
duke@435 | 1838 | char *options = NULL; |
duke@435 | 1839 | if(pos != NULL) { |
duke@435 | 1840 | options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); |
duke@435 | 1841 | } |
duke@435 | 1842 | #ifdef JVMTI_KERNEL |
duke@435 | 1843 | if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
duke@435 | 1844 | warning("profiling and debugging agents are not supported with Kernel VM"); |
duke@435 | 1845 | } else |
duke@435 | 1846 | #endif // JVMTI_KERNEL |
duke@435 | 1847 | add_init_agent(name, options, is_absolute_path); |
duke@435 | 1848 | |
duke@435 | 1849 | } |
duke@435 | 1850 | // -javaagent |
duke@435 | 1851 | } else if (match_option(option, "-javaagent:", &tail)) { |
duke@435 | 1852 | if(tail != NULL) { |
duke@435 | 1853 | char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); |
duke@435 | 1854 | add_init_agent("instrument", options, false); |
duke@435 | 1855 | } |
duke@435 | 1856 | // -Xnoclassgc |
duke@435 | 1857 | } else if (match_option(option, "-Xnoclassgc", &tail)) { |
duke@435 | 1858 | FLAG_SET_CMDLINE(bool, ClassUnloading, false); |
duke@435 | 1859 | // -Xincgc: i-CMS |
duke@435 | 1860 | } else if (match_option(option, "-Xincgc", &tail)) { |
duke@435 | 1861 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); |
duke@435 | 1862 | FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); |
duke@435 | 1863 | // -Xnoincgc: no i-CMS |
duke@435 | 1864 | } else if (match_option(option, "-Xnoincgc", &tail)) { |
duke@435 | 1865 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); |
duke@435 | 1866 | FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); |
duke@435 | 1867 | // -Xconcgc |
duke@435 | 1868 | } else if (match_option(option, "-Xconcgc", &tail)) { |
duke@435 | 1869 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); |
duke@435 | 1870 | // -Xnoconcgc |
duke@435 | 1871 | } else if (match_option(option, "-Xnoconcgc", &tail)) { |
duke@435 | 1872 | FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); |
duke@435 | 1873 | // -Xbatch |
duke@435 | 1874 | } else if (match_option(option, "-Xbatch", &tail)) { |
duke@435 | 1875 | FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); |
duke@435 | 1876 | // -Xmn for compatibility with other JVM vendors |
duke@435 | 1877 | } else if (match_option(option, "-Xmn", &tail)) { |
swamyv@924 | 1878 | julong long_initial_eden_size = 0; |
duke@435 | 1879 | ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
duke@435 | 1880 | if (errcode != arg_in_range) { |
duke@435 | 1881 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1882 | "Invalid initial eden size: %s\n", option->optionString); |
duke@435 | 1883 | describe_range_error(errcode); |
duke@435 | 1884 | return JNI_EINVAL; |
duke@435 | 1885 | } |
duke@435 | 1886 | FLAG_SET_CMDLINE(uintx, MaxNewSize, (size_t) long_initial_eden_size); |
duke@435 | 1887 | FLAG_SET_CMDLINE(uintx, NewSize, (size_t) long_initial_eden_size); |
duke@435 | 1888 | // -Xms |
duke@435 | 1889 | } else if (match_option(option, "-Xms", &tail)) { |
swamyv@924 | 1890 | julong long_initial_heap_size = 0; |
duke@435 | 1891 | ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
duke@435 | 1892 | if (errcode != arg_in_range) { |
duke@435 | 1893 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1894 | "Invalid initial heap size: %s\n", option->optionString); |
duke@435 | 1895 | describe_range_error(errcode); |
duke@435 | 1896 | return JNI_EINVAL; |
duke@435 | 1897 | } |
duke@435 | 1898 | set_initial_heap_size((size_t) long_initial_heap_size); |
duke@435 | 1899 | // Currently the minimum size and the initial heap sizes are the same. |
duke@435 | 1900 | set_min_heap_size(initial_heap_size()); |
duke@435 | 1901 | // -Xmx |
duke@435 | 1902 | } else if (match_option(option, "-Xmx", &tail)) { |
swamyv@924 | 1903 | julong long_max_heap_size = 0; |
duke@435 | 1904 | ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
duke@435 | 1905 | if (errcode != arg_in_range) { |
duke@435 | 1906 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1907 | "Invalid maximum heap size: %s\n", option->optionString); |
duke@435 | 1908 | describe_range_error(errcode); |
duke@435 | 1909 | return JNI_EINVAL; |
duke@435 | 1910 | } |
duke@435 | 1911 | FLAG_SET_CMDLINE(uintx, MaxHeapSize, (size_t) long_max_heap_size); |
duke@435 | 1912 | // Xmaxf |
duke@435 | 1913 | } else if (match_option(option, "-Xmaxf", &tail)) { |
duke@435 | 1914 | int maxf = (int)(atof(tail) * 100); |
duke@435 | 1915 | if (maxf < 0 || maxf > 100) { |
duke@435 | 1916 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1917 | "Bad max heap free percentage size: %s\n", |
duke@435 | 1918 | option->optionString); |
duke@435 | 1919 | return JNI_EINVAL; |
duke@435 | 1920 | } else { |
duke@435 | 1921 | FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); |
duke@435 | 1922 | } |
duke@435 | 1923 | // Xminf |
duke@435 | 1924 | } else if (match_option(option, "-Xminf", &tail)) { |
duke@435 | 1925 | int minf = (int)(atof(tail) * 100); |
duke@435 | 1926 | if (minf < 0 || minf > 100) { |
duke@435 | 1927 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1928 | "Bad min heap free percentage size: %s\n", |
duke@435 | 1929 | option->optionString); |
duke@435 | 1930 | return JNI_EINVAL; |
duke@435 | 1931 | } else { |
duke@435 | 1932 | FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); |
duke@435 | 1933 | } |
duke@435 | 1934 | // -Xss |
duke@435 | 1935 | } else if (match_option(option, "-Xss", &tail)) { |
swamyv@924 | 1936 | julong long_ThreadStackSize = 0; |
duke@435 | 1937 | ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
duke@435 | 1938 | if (errcode != arg_in_range) { |
duke@435 | 1939 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1940 | "Invalid thread stack size: %s\n", option->optionString); |
duke@435 | 1941 | describe_range_error(errcode); |
duke@435 | 1942 | return JNI_EINVAL; |
duke@435 | 1943 | } |
duke@435 | 1944 | // Internally track ThreadStackSize in units of 1024 bytes. |
duke@435 | 1945 | FLAG_SET_CMDLINE(intx, ThreadStackSize, |
duke@435 | 1946 | round_to((int)long_ThreadStackSize, K) / K); |
duke@435 | 1947 | // -Xoss |
duke@435 | 1948 | } else if (match_option(option, "-Xoss", &tail)) { |
duke@435 | 1949 | // HotSpot does not have separate native and Java stacks, ignore silently for compatibility |
duke@435 | 1950 | // -Xmaxjitcodesize |
duke@435 | 1951 | } else if (match_option(option, "-Xmaxjitcodesize", &tail)) { |
swamyv@924 | 1952 | julong long_ReservedCodeCacheSize = 0; |
duke@435 | 1953 | ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
swamyv@924 | 1954 | (size_t)InitialCodeCacheSize); |
duke@435 | 1955 | if (errcode != arg_in_range) { |
duke@435 | 1956 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1957 | "Invalid maximum code cache size: %s\n", |
duke@435 | 1958 | option->optionString); |
duke@435 | 1959 | describe_range_error(errcode); |
duke@435 | 1960 | return JNI_EINVAL; |
duke@435 | 1961 | } |
duke@435 | 1962 | FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); |
duke@435 | 1963 | // -green |
duke@435 | 1964 | } else if (match_option(option, "-green", &tail)) { |
duke@435 | 1965 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 1966 | "Green threads support not available\n"); |
duke@435 | 1967 | return JNI_EINVAL; |
duke@435 | 1968 | // -native |
duke@435 | 1969 | } else if (match_option(option, "-native", &tail)) { |
duke@435 | 1970 | // HotSpot always uses native threads, ignore silently for compatibility |
duke@435 | 1971 | // -Xsqnopause |
duke@435 | 1972 | } else if (match_option(option, "-Xsqnopause", &tail)) { |
duke@435 | 1973 | // EVM option, ignore silently for compatibility |
duke@435 | 1974 | // -Xrs |
duke@435 | 1975 | } else if (match_option(option, "-Xrs", &tail)) { |
duke@435 | 1976 | // Classic/EVM option, new functionality |
duke@435 | 1977 | FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); |
duke@435 | 1978 | } else if (match_option(option, "-Xusealtsigs", &tail)) { |
duke@435 | 1979 | // change default internal VM signals used - lower case for back compat |
duke@435 | 1980 | FLAG_SET_CMDLINE(bool, UseAltSigs, true); |
duke@435 | 1981 | // -Xoptimize |
duke@435 | 1982 | } else if (match_option(option, "-Xoptimize", &tail)) { |
duke@435 | 1983 | // EVM option, ignore silently for compatibility |
duke@435 | 1984 | // -Xprof |
duke@435 | 1985 | } else if (match_option(option, "-Xprof", &tail)) { |
duke@435 | 1986 | #ifndef FPROF_KERNEL |
duke@435 | 1987 | _has_profile = true; |
duke@435 | 1988 | #else // FPROF_KERNEL |
duke@435 | 1989 | // do we have to exit? |
duke@435 | 1990 | warning("Kernel VM does not support flat profiling."); |
duke@435 | 1991 | #endif // FPROF_KERNEL |
duke@435 | 1992 | // -Xaprof |
duke@435 | 1993 | } else if (match_option(option, "-Xaprof", &tail)) { |
duke@435 | 1994 | _has_alloc_profile = true; |
duke@435 | 1995 | // -Xconcurrentio |
duke@435 | 1996 | } else if (match_option(option, "-Xconcurrentio", &tail)) { |
duke@435 | 1997 | FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); |
duke@435 | 1998 | FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); |
duke@435 | 1999 | FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); |
duke@435 | 2000 | FLAG_SET_CMDLINE(bool, UseTLAB, false); |
duke@435 | 2001 | FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation |
duke@435 | 2002 | |
duke@435 | 2003 | // -Xinternalversion |
duke@435 | 2004 | } else if (match_option(option, "-Xinternalversion", &tail)) { |
duke@435 | 2005 | jio_fprintf(defaultStream::output_stream(), "%s\n", |
duke@435 | 2006 | VM_Version::internal_vm_info_string()); |
duke@435 | 2007 | vm_exit(0); |
duke@435 | 2008 | #ifndef PRODUCT |
duke@435 | 2009 | // -Xprintflags |
duke@435 | 2010 | } else if (match_option(option, "-Xprintflags", &tail)) { |
duke@435 | 2011 | CommandLineFlags::printFlags(); |
duke@435 | 2012 | vm_exit(0); |
duke@435 | 2013 | #endif |
duke@435 | 2014 | // -D |
duke@435 | 2015 | } else if (match_option(option, "-D", &tail)) { |
duke@435 | 2016 | if (!add_property(tail)) { |
duke@435 | 2017 | return JNI_ENOMEM; |
duke@435 | 2018 | } |
duke@435 | 2019 | // Out of the box management support |
duke@435 | 2020 | if (match_option(option, "-Dcom.sun.management", &tail)) { |
duke@435 | 2021 | FLAG_SET_CMDLINE(bool, ManagementServer, true); |
duke@435 | 2022 | } |
duke@435 | 2023 | // -Xint |
duke@435 | 2024 | } else if (match_option(option, "-Xint", &tail)) { |
duke@435 | 2025 | set_mode_flags(_int); |
duke@435 | 2026 | // -Xmixed |
duke@435 | 2027 | } else if (match_option(option, "-Xmixed", &tail)) { |
duke@435 | 2028 | set_mode_flags(_mixed); |
duke@435 | 2029 | // -Xcomp |
duke@435 | 2030 | } else if (match_option(option, "-Xcomp", &tail)) { |
duke@435 | 2031 | // for testing the compiler; turn off all flags that inhibit compilation |
duke@435 | 2032 | set_mode_flags(_comp); |
duke@435 | 2033 | |
duke@435 | 2034 | // -Xshare:dump |
duke@435 | 2035 | } else if (match_option(option, "-Xshare:dump", &tail)) { |
duke@435 | 2036 | #ifdef TIERED |
duke@435 | 2037 | FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); |
duke@435 | 2038 | set_mode_flags(_int); // Prevent compilation, which creates objects |
duke@435 | 2039 | #elif defined(COMPILER2) |
duke@435 | 2040 | vm_exit_during_initialization( |
duke@435 | 2041 | "Dumping a shared archive is not supported on the Server JVM.", NULL); |
duke@435 | 2042 | #elif defined(KERNEL) |
duke@435 | 2043 | vm_exit_during_initialization( |
duke@435 | 2044 | "Dumping a shared archive is not supported on the Kernel JVM.", NULL); |
duke@435 | 2045 | #else |
duke@435 | 2046 | FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); |
duke@435 | 2047 | set_mode_flags(_int); // Prevent compilation, which creates objects |
duke@435 | 2048 | #endif |
duke@435 | 2049 | // -Xshare:on |
duke@435 | 2050 | } else if (match_option(option, "-Xshare:on", &tail)) { |
duke@435 | 2051 | FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); |
duke@435 | 2052 | FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); |
duke@435 | 2053 | #ifdef TIERED |
duke@435 | 2054 | FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true); |
duke@435 | 2055 | #endif // TIERED |
duke@435 | 2056 | // -Xshare:auto |
duke@435 | 2057 | } else if (match_option(option, "-Xshare:auto", &tail)) { |
duke@435 | 2058 | FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); |
duke@435 | 2059 | FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); |
duke@435 | 2060 | // -Xshare:off |
duke@435 | 2061 | } else if (match_option(option, "-Xshare:off", &tail)) { |
duke@435 | 2062 | FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); |
duke@435 | 2063 | FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); |
duke@435 | 2064 | |
duke@435 | 2065 | // -Xverify |
duke@435 | 2066 | } else if (match_option(option, "-Xverify", &tail)) { |
duke@435 | 2067 | if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { |
duke@435 | 2068 | FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); |
duke@435 | 2069 | FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); |
duke@435 | 2070 | } else if (strcmp(tail, ":remote") == 0) { |
duke@435 | 2071 | FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); |
duke@435 | 2072 | FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); |
duke@435 | 2073 | } else if (strcmp(tail, ":none") == 0) { |
duke@435 | 2074 | FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); |
duke@435 | 2075 | FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); |
duke@435 | 2076 | } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { |
duke@435 | 2077 | return JNI_EINVAL; |
duke@435 | 2078 | } |
duke@435 | 2079 | // -Xdebug |
duke@435 | 2080 | } else if (match_option(option, "-Xdebug", &tail)) { |
duke@435 | 2081 | // note this flag has been used, then ignore |
duke@435 | 2082 | set_xdebug_mode(true); |
duke@435 | 2083 | // -Xnoagent |
duke@435 | 2084 | } else if (match_option(option, "-Xnoagent", &tail)) { |
duke@435 | 2085 | // For compatibility with classic. HotSpot refuses to load the old style agent.dll. |
duke@435 | 2086 | } else if (match_option(option, "-Xboundthreads", &tail)) { |
duke@435 | 2087 | // Bind user level threads to kernel threads (Solaris only) |
duke@435 | 2088 | FLAG_SET_CMDLINE(bool, UseBoundThreads, true); |
duke@435 | 2089 | } else if (match_option(option, "-Xloggc:", &tail)) { |
duke@435 | 2090 | // Redirect GC output to the file. -Xloggc:<filename> |
duke@435 | 2091 | // ostream_init_log(), when called will use this filename |
duke@435 | 2092 | // to initialize a fileStream. |
duke@435 | 2093 | _gc_log_filename = strdup(tail); |
duke@435 | 2094 | FLAG_SET_CMDLINE(bool, PrintGC, true); |
duke@435 | 2095 | FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); |
duke@435 | 2096 | FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); |
duke@435 | 2097 | |
duke@435 | 2098 | // JNI hooks |
duke@435 | 2099 | } else if (match_option(option, "-Xcheck", &tail)) { |
duke@435 | 2100 | if (!strcmp(tail, ":jni")) { |
duke@435 | 2101 | CheckJNICalls = true; |
duke@435 | 2102 | } else if (is_bad_option(option, args->ignoreUnrecognized, |
duke@435 | 2103 | "check")) { |
duke@435 | 2104 | return JNI_EINVAL; |
duke@435 | 2105 | } |
duke@435 | 2106 | } else if (match_option(option, "vfprintf", &tail)) { |
duke@435 | 2107 | _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); |
duke@435 | 2108 | } else if (match_option(option, "exit", &tail)) { |
duke@435 | 2109 | _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); |
duke@435 | 2110 | } else if (match_option(option, "abort", &tail)) { |
duke@435 | 2111 | _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); |
duke@435 | 2112 | // -XX:+AggressiveHeap |
duke@435 | 2113 | } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { |
duke@435 | 2114 | |
duke@435 | 2115 | // This option inspects the machine and attempts to set various |
duke@435 | 2116 | // parameters to be optimal for long-running, memory allocation |
duke@435 | 2117 | // intensive jobs. It is intended for machines with large |
duke@435 | 2118 | // amounts of cpu and memory. |
duke@435 | 2119 | |
duke@435 | 2120 | // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit |
duke@435 | 2121 | // VM, but we may not be able to represent the total physical memory |
duke@435 | 2122 | // available (like having 8gb of memory on a box but using a 32bit VM). |
duke@435 | 2123 | // Thus, we need to make sure we're using a julong for intermediate |
duke@435 | 2124 | // calculations. |
duke@435 | 2125 | julong initHeapSize; |
duke@435 | 2126 | julong total_memory = os::physical_memory(); |
duke@435 | 2127 | |
duke@435 | 2128 | if (total_memory < (julong)256*M) { |
duke@435 | 2129 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2130 | "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); |
duke@435 | 2131 | vm_exit(1); |
duke@435 | 2132 | } |
duke@435 | 2133 | |
duke@435 | 2134 | // The heap size is half of available memory, or (at most) |
duke@435 | 2135 | // all of possible memory less 160mb (leaving room for the OS |
duke@435 | 2136 | // when using ISM). This is the maximum; because adaptive sizing |
duke@435 | 2137 | // is turned on below, the actual space used may be smaller. |
duke@435 | 2138 | |
duke@435 | 2139 | initHeapSize = MIN2(total_memory / (julong)2, |
duke@435 | 2140 | total_memory - (julong)160*M); |
duke@435 | 2141 | |
duke@435 | 2142 | // Make sure that if we have a lot of memory we cap the 32 bit |
duke@435 | 2143 | // process space. The 64bit VM version of this function is a nop. |
duke@435 | 2144 | initHeapSize = os::allocatable_physical_memory(initHeapSize); |
duke@435 | 2145 | |
duke@435 | 2146 | // The perm gen is separate but contiguous with the |
duke@435 | 2147 | // object heap (and is reserved with it) so subtract it |
duke@435 | 2148 | // from the heap size. |
duke@435 | 2149 | if (initHeapSize > MaxPermSize) { |
duke@435 | 2150 | initHeapSize = initHeapSize - MaxPermSize; |
duke@435 | 2151 | } else { |
duke@435 | 2152 | warning("AggressiveHeap and MaxPermSize values may conflict"); |
duke@435 | 2153 | } |
duke@435 | 2154 | |
duke@435 | 2155 | if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
duke@435 | 2156 | FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); |
duke@435 | 2157 | set_initial_heap_size(MaxHeapSize); |
duke@435 | 2158 | // Currently the minimum size and the initial heap sizes are the same. |
duke@435 | 2159 | set_min_heap_size(initial_heap_size()); |
duke@435 | 2160 | } |
duke@435 | 2161 | if (FLAG_IS_DEFAULT(NewSize)) { |
duke@435 | 2162 | // Make the young generation 3/8ths of the total heap. |
duke@435 | 2163 | FLAG_SET_CMDLINE(uintx, NewSize, |
duke@435 | 2164 | ((julong)MaxHeapSize / (julong)8) * (julong)3); |
duke@435 | 2165 | FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); |
duke@435 | 2166 | } |
duke@435 | 2167 | |
duke@435 | 2168 | FLAG_SET_DEFAULT(UseLargePages, true); |
duke@435 | 2169 | |
duke@435 | 2170 | // Increase some data structure sizes for efficiency |
duke@435 | 2171 | FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); |
duke@435 | 2172 | FLAG_SET_CMDLINE(bool, ResizeTLAB, false); |
duke@435 | 2173 | FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); |
duke@435 | 2174 | |
duke@435 | 2175 | // See the OldPLABSize comment below, but replace 'after promotion' |
duke@435 | 2176 | // with 'after copying'. YoungPLABSize is the size of the survivor |
duke@435 | 2177 | // space per-gc-thread buffers. The default is 4kw. |
duke@435 | 2178 | FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words |
duke@435 | 2179 | |
duke@435 | 2180 | // OldPLABSize is the size of the buffers in the old gen that |
duke@435 | 2181 | // UseParallelGC uses to promote live data that doesn't fit in the |
duke@435 | 2182 | // survivor spaces. At any given time, there's one for each gc thread. |
duke@435 | 2183 | // The default size is 1kw. These buffers are rarely used, since the |
duke@435 | 2184 | // survivor spaces are usually big enough. For specjbb, however, there |
duke@435 | 2185 | // are occasions when there's lots of live data in the young gen |
duke@435 | 2186 | // and we end up promoting some of it. We don't have a definite |
duke@435 | 2187 | // explanation for why bumping OldPLABSize helps, but the theory |
duke@435 | 2188 | // is that a bigger PLAB results in retaining something like the |
duke@435 | 2189 | // original allocation order after promotion, which improves mutator |
duke@435 | 2190 | // locality. A minor effect may be that larger PLABs reduce the |
duke@435 | 2191 | // number of PLAB allocation events during gc. The value of 8kw |
duke@435 | 2192 | // was arrived at by experimenting with specjbb. |
duke@435 | 2193 | FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words |
duke@435 | 2194 | |
duke@435 | 2195 | // CompilationPolicyChoice=0 causes the server compiler to adopt |
duke@435 | 2196 | // a more conservative which-method-do-I-compile policy when one |
duke@435 | 2197 | // of the counters maintained by the interpreter trips. The |
duke@435 | 2198 | // result is reduced startup time and improved specjbb and |
duke@435 | 2199 | // alacrity performance. Zero is the default, but we set it |
duke@435 | 2200 | // explicitly here in case the default changes. |
duke@435 | 2201 | // See runtime/compilationPolicy.*. |
duke@435 | 2202 | FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); |
duke@435 | 2203 | |
duke@435 | 2204 | // Enable parallel GC and adaptive generation sizing |
duke@435 | 2205 | FLAG_SET_CMDLINE(bool, UseParallelGC, true); |
jmasa@445 | 2206 | FLAG_SET_DEFAULT(ParallelGCThreads, |
jmasa@445 | 2207 | Abstract_VM_Version::parallel_worker_threads()); |
duke@435 | 2208 | |
duke@435 | 2209 | // Encourage steady state memory management |
duke@435 | 2210 | FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); |
duke@435 | 2211 | |
duke@435 | 2212 | // This appears to improve mutator locality |
duke@435 | 2213 | FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
duke@435 | 2214 | |
duke@435 | 2215 | // Get around early Solaris scheduling bug |
duke@435 | 2216 | // (affinity vs other jobs on system) |
duke@435 | 2217 | // but disallow DR and offlining (5008695). |
duke@435 | 2218 | FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); |
duke@435 | 2219 | |
duke@435 | 2220 | } else if (match_option(option, "-XX:+NeverTenure", &tail)) { |
duke@435 | 2221 | // The last option must always win. |
duke@435 | 2222 | FLAG_SET_CMDLINE(bool, AlwaysTenure, false); |
duke@435 | 2223 | FLAG_SET_CMDLINE(bool, NeverTenure, true); |
duke@435 | 2224 | } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { |
duke@435 | 2225 | // The last option must always win. |
duke@435 | 2226 | FLAG_SET_CMDLINE(bool, NeverTenure, false); |
duke@435 | 2227 | FLAG_SET_CMDLINE(bool, AlwaysTenure, true); |
duke@435 | 2228 | } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || |
duke@435 | 2229 | match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { |
duke@435 | 2230 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2231 | "Please use CMSClassUnloadingEnabled in place of " |
duke@435 | 2232 | "CMSPermGenSweepingEnabled in the future\n"); |
duke@435 | 2233 | } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { |
duke@435 | 2234 | FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); |
duke@435 | 2235 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2236 | "Please use -XX:+UseGCOverheadLimit in place of " |
duke@435 | 2237 | "-XX:+UseGCTimeLimit in the future\n"); |
duke@435 | 2238 | } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { |
duke@435 | 2239 | FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); |
duke@435 | 2240 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2241 | "Please use -XX:-UseGCOverheadLimit in place of " |
duke@435 | 2242 | "-XX:-UseGCTimeLimit in the future\n"); |
duke@435 | 2243 | // The TLE options are for compatibility with 1.3 and will be |
duke@435 | 2244 | // removed without notice in a future release. These options |
duke@435 | 2245 | // are not to be documented. |
duke@435 | 2246 | } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { |
duke@435 | 2247 | // No longer used. |
duke@435 | 2248 | } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { |
duke@435 | 2249 | FLAG_SET_CMDLINE(bool, ResizeTLAB, true); |
duke@435 | 2250 | } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { |
duke@435 | 2251 | FLAG_SET_CMDLINE(bool, ResizeTLAB, false); |
duke@435 | 2252 | } else if (match_option(option, "-XX:+PrintTLE", &tail)) { |
duke@435 | 2253 | FLAG_SET_CMDLINE(bool, PrintTLAB, true); |
duke@435 | 2254 | } else if (match_option(option, "-XX:-PrintTLE", &tail)) { |
duke@435 | 2255 | FLAG_SET_CMDLINE(bool, PrintTLAB, false); |
duke@435 | 2256 | } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { |
duke@435 | 2257 | // No longer used. |
duke@435 | 2258 | } else if (match_option(option, "-XX:TLESize=", &tail)) { |
swamyv@924 | 2259 | julong long_tlab_size = 0; |
duke@435 | 2260 | ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
duke@435 | 2261 | if (errcode != arg_in_range) { |
duke@435 | 2262 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2263 | "Invalid TLAB size: %s\n", option->optionString); |
duke@435 | 2264 | describe_range_error(errcode); |
duke@435 | 2265 | return JNI_EINVAL; |
duke@435 | 2266 | } |
duke@435 | 2267 | FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); |
duke@435 | 2268 | } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { |
duke@435 | 2269 | // No longer used. |
duke@435 | 2270 | } else if (match_option(option, "-XX:+UseTLE", &tail)) { |
duke@435 | 2271 | FLAG_SET_CMDLINE(bool, UseTLAB, true); |
duke@435 | 2272 | } else if (match_option(option, "-XX:-UseTLE", &tail)) { |
duke@435 | 2273 | FLAG_SET_CMDLINE(bool, UseTLAB, false); |
duke@435 | 2274 | SOLARIS_ONLY( |
duke@435 | 2275 | } else if (match_option(option, "-XX:+UsePermISM", &tail)) { |
duke@435 | 2276 | warning("-XX:+UsePermISM is obsolete."); |
duke@435 | 2277 | FLAG_SET_CMDLINE(bool, UseISM, true); |
duke@435 | 2278 | } else if (match_option(option, "-XX:-UsePermISM", &tail)) { |
duke@435 | 2279 | FLAG_SET_CMDLINE(bool, UseISM, false); |
duke@435 | 2280 | ) |
duke@435 | 2281 | } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { |
duke@435 | 2282 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); |
duke@435 | 2283 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); |
duke@435 | 2284 | } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { |
duke@435 | 2285 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); |
duke@435 | 2286 | FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); |
duke@435 | 2287 | } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { |
duke@435 | 2288 | #ifdef SOLARIS |
duke@435 | 2289 | FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
duke@435 | 2290 | FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); |
duke@435 | 2291 | FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); |
duke@435 | 2292 | FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); |
duke@435 | 2293 | #else // ndef SOLARIS |
duke@435 | 2294 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2295 | "ExtendedDTraceProbes flag is only applicable on Solaris\n"); |
duke@435 | 2296 | return JNI_EINVAL; |
duke@435 | 2297 | #endif // ndef SOLARIS |
duke@435 | 2298 | } else |
duke@435 | 2299 | #ifdef ASSERT |
duke@435 | 2300 | if (match_option(option, "-XX:+FullGCALot", &tail)) { |
duke@435 | 2301 | FLAG_SET_CMDLINE(bool, FullGCALot, true); |
duke@435 | 2302 | // disable scavenge before parallel mark-compact |
duke@435 | 2303 | FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
duke@435 | 2304 | } else |
duke@435 | 2305 | #endif |
duke@435 | 2306 | if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
duke@435 | 2307 | julong cms_blocks_to_claim = (julong)atol(tail); |
duke@435 | 2308 | FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
duke@435 | 2309 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2310 | "Please use -XX:CMSParPromoteBlocksToClaim in place of " |
duke@435 | 2311 | "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
duke@435 | 2312 | } else |
duke@435 | 2313 | if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
swamyv@924 | 2314 | julong old_plab_size = 0; |
duke@435 | 2315 | ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
duke@435 | 2316 | if (errcode != arg_in_range) { |
duke@435 | 2317 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2318 | "Invalid old PLAB size: %s\n", option->optionString); |
duke@435 | 2319 | describe_range_error(errcode); |
duke@435 | 2320 | return JNI_EINVAL; |
duke@435 | 2321 | } |
swamyv@924 | 2322 | FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
duke@435 | 2323 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2324 | "Please use -XX:OldPLABSize in place of " |
duke@435 | 2325 | "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); |
duke@435 | 2326 | } else |
duke@435 | 2327 | if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
swamyv@924 | 2328 | julong young_plab_size = 0; |
duke@435 | 2329 | ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
duke@435 | 2330 | if (errcode != arg_in_range) { |
duke@435 | 2331 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2332 | "Invalid young PLAB size: %s\n", option->optionString); |
duke@435 | 2333 | describe_range_error(errcode); |
duke@435 | 2334 | return JNI_EINVAL; |
duke@435 | 2335 | } |
swamyv@924 | 2336 | FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
duke@435 | 2337 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2338 | "Please use -XX:YoungPLABSize in place of " |
duke@435 | 2339 | "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); |
duke@435 | 2340 | } else |
duke@435 | 2341 | if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
duke@435 | 2342 | // Skip -XX:Flags= since that case has already been handled |
duke@435 | 2343 | if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { |
duke@435 | 2344 | if (!process_argument(tail, args->ignoreUnrecognized, origin)) { |
duke@435 | 2345 | return JNI_EINVAL; |
duke@435 | 2346 | } |
duke@435 | 2347 | } |
duke@435 | 2348 | // Unknown option |
duke@435 | 2349 | } else if (is_bad_option(option, args->ignoreUnrecognized)) { |
duke@435 | 2350 | return JNI_ERR; |
duke@435 | 2351 | } |
duke@435 | 2352 | } |
xlu@884 | 2353 | // Change the default value for flags which have different default values |
xlu@884 | 2354 | // when working with older JDKs. |
xlu@884 | 2355 | if (JDK_Version::current().compare_major(6) <= 0 && |
xlu@884 | 2356 | FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
xlu@884 | 2357 | FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
xlu@884 | 2358 | } |
duke@435 | 2359 | return JNI_OK; |
duke@435 | 2360 | } |
duke@435 | 2361 | |
duke@435 | 2362 | jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { |
duke@435 | 2363 | // This must be done after all -D arguments have been processed. |
duke@435 | 2364 | scp_p->expand_endorsed(); |
duke@435 | 2365 | |
duke@435 | 2366 | if (scp_assembly_required || scp_p->get_endorsed() != NULL) { |
duke@435 | 2367 | // Assemble the bootclasspath elements into the final path. |
duke@435 | 2368 | Arguments::set_sysclasspath(scp_p->combined_path()); |
duke@435 | 2369 | } |
duke@435 | 2370 | |
duke@435 | 2371 | // This must be done after all arguments have been processed. |
duke@435 | 2372 | // java_compiler() true means set to "NONE" or empty. |
duke@435 | 2373 | if (java_compiler() && !xdebug_mode()) { |
duke@435 | 2374 | // For backwards compatibility, we switch to interpreted mode if |
duke@435 | 2375 | // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was |
duke@435 | 2376 | // not specified. |
duke@435 | 2377 | set_mode_flags(_int); |
duke@435 | 2378 | } |
duke@435 | 2379 | if (CompileThreshold == 0) { |
duke@435 | 2380 | set_mode_flags(_int); |
duke@435 | 2381 | } |
duke@435 | 2382 | |
duke@435 | 2383 | #ifdef TIERED |
duke@435 | 2384 | // If we are using tiered compilation in the tiered vm then c1 will |
duke@435 | 2385 | // do the profiling and we don't want to waste that time in the |
duke@435 | 2386 | // interpreter. |
duke@435 | 2387 | if (TieredCompilation) { |
duke@435 | 2388 | ProfileInterpreter = false; |
duke@435 | 2389 | } else { |
duke@435 | 2390 | // Since we are running vanilla server we must adjust the compile threshold |
duke@435 | 2391 | // unless the user has already adjusted it because the default threshold assumes |
duke@435 | 2392 | // we will run tiered. |
duke@435 | 2393 | |
duke@435 | 2394 | if (FLAG_IS_DEFAULT(CompileThreshold)) { |
duke@435 | 2395 | CompileThreshold = Tier2CompileThreshold; |
duke@435 | 2396 | } |
duke@435 | 2397 | } |
duke@435 | 2398 | #endif // TIERED |
duke@435 | 2399 | |
duke@435 | 2400 | #ifndef COMPILER2 |
duke@435 | 2401 | // Don't degrade server performance for footprint |
duke@435 | 2402 | if (FLAG_IS_DEFAULT(UseLargePages) && |
duke@435 | 2403 | MaxHeapSize < LargePageHeapSizeThreshold) { |
duke@435 | 2404 | // No need for large granularity pages w/small heaps. |
duke@435 | 2405 | // Note that large pages are enabled/disabled for both the |
duke@435 | 2406 | // Java heap and the code cache. |
duke@435 | 2407 | FLAG_SET_DEFAULT(UseLargePages, false); |
duke@435 | 2408 | SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); |
duke@435 | 2409 | SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); |
duke@435 | 2410 | } |
ysr@777 | 2411 | |
duke@435 | 2412 | #else |
duke@435 | 2413 | if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { |
duke@435 | 2414 | FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); |
duke@435 | 2415 | } |
ysr@777 | 2416 | // Temporary disable bulk zeroing reduction with G1. See CR 6627983. |
ysr@777 | 2417 | if (UseG1GC) { |
ysr@777 | 2418 | FLAG_SET_DEFAULT(ReduceBulkZeroing, false); |
ysr@777 | 2419 | } |
duke@435 | 2420 | #endif |
duke@435 | 2421 | |
duke@435 | 2422 | if (!check_vm_args_consistency()) { |
duke@435 | 2423 | return JNI_ERR; |
duke@435 | 2424 | } |
duke@435 | 2425 | |
duke@435 | 2426 | return JNI_OK; |
duke@435 | 2427 | } |
duke@435 | 2428 | |
duke@435 | 2429 | jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { |
duke@435 | 2430 | return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, |
duke@435 | 2431 | scp_assembly_required_p); |
duke@435 | 2432 | } |
duke@435 | 2433 | |
duke@435 | 2434 | jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { |
duke@435 | 2435 | return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, |
duke@435 | 2436 | scp_assembly_required_p); |
duke@435 | 2437 | } |
duke@435 | 2438 | |
duke@435 | 2439 | jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { |
duke@435 | 2440 | const int N_MAX_OPTIONS = 64; |
duke@435 | 2441 | const int OPTION_BUFFER_SIZE = 1024; |
duke@435 | 2442 | char buffer[OPTION_BUFFER_SIZE]; |
duke@435 | 2443 | |
duke@435 | 2444 | // The variable will be ignored if it exceeds the length of the buffer. |
duke@435 | 2445 | // Don't check this variable if user has special privileges |
duke@435 | 2446 | // (e.g. unix su command). |
duke@435 | 2447 | if (os::getenv(name, buffer, sizeof(buffer)) && |
duke@435 | 2448 | !os::have_special_privileges()) { |
duke@435 | 2449 | JavaVMOption options[N_MAX_OPTIONS]; // Construct option array |
duke@435 | 2450 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2451 | "Picked up %s: %s\n", name, buffer); |
duke@435 | 2452 | char* rd = buffer; // pointer to the input string (rd) |
duke@435 | 2453 | int i; |
duke@435 | 2454 | for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string |
duke@435 | 2455 | while (isspace(*rd)) rd++; // skip whitespace |
duke@435 | 2456 | if (*rd == 0) break; // we re done when the input string is read completely |
duke@435 | 2457 | |
duke@435 | 2458 | // The output, option string, overwrites the input string. |
duke@435 | 2459 | // Because of quoting, the pointer to the option string (wrt) may lag the pointer to |
duke@435 | 2460 | // input string (rd). |
duke@435 | 2461 | char* wrt = rd; |
duke@435 | 2462 | |
duke@435 | 2463 | options[i++].optionString = wrt; // Fill in option |
duke@435 | 2464 | while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL |
duke@435 | 2465 | if (*rd == '\'' || *rd == '"') { // handle a quoted string |
duke@435 | 2466 | int quote = *rd; // matching quote to look for |
duke@435 | 2467 | rd++; // don't copy open quote |
duke@435 | 2468 | while (*rd != quote) { // include everything (even spaces) up until quote |
duke@435 | 2469 | if (*rd == 0) { // string termination means unmatched string |
duke@435 | 2470 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 2471 | "Unmatched quote in %s\n", name); |
duke@435 | 2472 | return JNI_ERR; |
duke@435 | 2473 | } |
duke@435 | 2474 | *wrt++ = *rd++; // copy to option string |
duke@435 | 2475 | } |
duke@435 | 2476 | rd++; // don't copy close quote |
duke@435 | 2477 | } else { |
duke@435 | 2478 | *wrt++ = *rd++; // copy to option string |
duke@435 | 2479 | } |
duke@435 | 2480 | } |
duke@435 | 2481 | // Need to check if we're done before writing a NULL, |
duke@435 | 2482 | // because the write could be to the byte that rd is pointing to. |
duke@435 | 2483 | if (*rd++ == 0) { |
duke@435 | 2484 | *wrt = 0; |
duke@435 | 2485 | break; |
duke@435 | 2486 | } |
duke@435 | 2487 | *wrt = 0; // Zero terminate option |
duke@435 | 2488 | } |
duke@435 | 2489 | // Construct JavaVMInitArgs structure and parse as if it was part of the command line |
duke@435 | 2490 | JavaVMInitArgs vm_args; |
duke@435 | 2491 | vm_args.version = JNI_VERSION_1_2; |
duke@435 | 2492 | vm_args.options = options; |
duke@435 | 2493 | vm_args.nOptions = i; |
kvn@999 | 2494 | vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
duke@435 | 2495 | |
duke@435 | 2496 | if (PrintVMOptions) { |
duke@435 | 2497 | const char* tail; |
duke@435 | 2498 | for (int i = 0; i < vm_args.nOptions; i++) { |
duke@435 | 2499 | const JavaVMOption *option = vm_args.options + i; |
duke@435 | 2500 | if (match_option(option, "-XX:", &tail)) { |
duke@435 | 2501 | logOption(tail); |
duke@435 | 2502 | } |
duke@435 | 2503 | } |
duke@435 | 2504 | } |
duke@435 | 2505 | |
duke@435 | 2506 | return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); |
duke@435 | 2507 | } |
duke@435 | 2508 | return JNI_OK; |
duke@435 | 2509 | } |
duke@435 | 2510 | |
duke@435 | 2511 | // Parse entry point called from JNI_CreateJavaVM |
duke@435 | 2512 | |
duke@435 | 2513 | jint Arguments::parse(const JavaVMInitArgs* args) { |
duke@435 | 2514 | |
duke@435 | 2515 | // Sharing support |
duke@435 | 2516 | // Construct the path to the archive |
duke@435 | 2517 | char jvm_path[JVM_MAXPATHLEN]; |
duke@435 | 2518 | os::jvm_path(jvm_path, sizeof(jvm_path)); |
duke@435 | 2519 | #ifdef TIERED |
duke@435 | 2520 | if (strstr(jvm_path, "client") != NULL) { |
duke@435 | 2521 | force_client_mode = true; |
duke@435 | 2522 | } |
duke@435 | 2523 | #endif // TIERED |
duke@435 | 2524 | char *end = strrchr(jvm_path, *os::file_separator()); |
duke@435 | 2525 | if (end != NULL) *end = '\0'; |
duke@435 | 2526 | char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + |
duke@435 | 2527 | strlen(os::file_separator()) + 20); |
duke@435 | 2528 | if (shared_archive_path == NULL) return JNI_ENOMEM; |
duke@435 | 2529 | strcpy(shared_archive_path, jvm_path); |
duke@435 | 2530 | strcat(shared_archive_path, os::file_separator()); |
duke@435 | 2531 | strcat(shared_archive_path, "classes"); |
duke@435 | 2532 | DEBUG_ONLY(strcat(shared_archive_path, "_g");) |
duke@435 | 2533 | strcat(shared_archive_path, ".jsa"); |
duke@435 | 2534 | SharedArchivePath = shared_archive_path; |
duke@435 | 2535 | |
duke@435 | 2536 | // Remaining part of option string |
duke@435 | 2537 | const char* tail; |
duke@435 | 2538 | |
duke@435 | 2539 | // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. |
duke@435 | 2540 | bool settings_file_specified = false; |
kvn@999 | 2541 | const char* flags_file; |
duke@435 | 2542 | int index; |
duke@435 | 2543 | for (index = 0; index < args->nOptions; index++) { |
duke@435 | 2544 | const JavaVMOption *option = args->options + index; |
duke@435 | 2545 | if (match_option(option, "-XX:Flags=", &tail)) { |
kvn@999 | 2546 | flags_file = tail; |
duke@435 | 2547 | settings_file_specified = true; |
duke@435 | 2548 | } |
duke@435 | 2549 | if (match_option(option, "-XX:+PrintVMOptions", &tail)) { |
duke@435 | 2550 | PrintVMOptions = true; |
duke@435 | 2551 | } |
kvn@688 | 2552 | if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
kvn@688 | 2553 | PrintVMOptions = false; |
kvn@688 | 2554 | } |
kvn@999 | 2555 | if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
kvn@999 | 2556 | IgnoreUnrecognizedVMOptions = true; |
kvn@999 | 2557 | } |
kvn@999 | 2558 | if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { |
kvn@999 | 2559 | IgnoreUnrecognizedVMOptions = false; |
kvn@999 | 2560 | } |
kvn@999 | 2561 | } |
kvn@999 | 2562 | |
kvn@999 | 2563 | if (IgnoreUnrecognizedVMOptions) { |
kvn@999 | 2564 | // uncast const to modify the flag args->ignoreUnrecognized |
kvn@999 | 2565 | *(jboolean*)(&args->ignoreUnrecognized) = true; |
kvn@999 | 2566 | } |
kvn@999 | 2567 | |
kvn@999 | 2568 | // Parse specified settings file |
kvn@999 | 2569 | if (settings_file_specified) { |
kvn@999 | 2570 | if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { |
kvn@999 | 2571 | return JNI_EINVAL; |
kvn@999 | 2572 | } |
duke@435 | 2573 | } |
duke@435 | 2574 | |
duke@435 | 2575 | // Parse default .hotspotrc settings file |
duke@435 | 2576 | if (!settings_file_specified) { |
duke@435 | 2577 | if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
duke@435 | 2578 | return JNI_EINVAL; |
duke@435 | 2579 | } |
duke@435 | 2580 | } |
duke@435 | 2581 | |
duke@435 | 2582 | if (PrintVMOptions) { |
duke@435 | 2583 | for (index = 0; index < args->nOptions; index++) { |
duke@435 | 2584 | const JavaVMOption *option = args->options + index; |
duke@435 | 2585 | if (match_option(option, "-XX:", &tail)) { |
duke@435 | 2586 | logOption(tail); |
duke@435 | 2587 | } |
duke@435 | 2588 | } |
duke@435 | 2589 | } |
duke@435 | 2590 | |
duke@435 | 2591 | // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS |
duke@435 | 2592 | jint result = parse_vm_init_args(args); |
duke@435 | 2593 | if (result != JNI_OK) { |
duke@435 | 2594 | return result; |
duke@435 | 2595 | } |
duke@435 | 2596 | |
ysr@777 | 2597 | // These are hacks until G1 is fully supported and tested |
ysr@777 | 2598 | // but lets you force -XX:+UseG1GC in PRT and get it where it (mostly) works |
ysr@777 | 2599 | if (UseG1GC) { |
ysr@777 | 2600 | if (UseConcMarkSweepGC || UseParNewGC || UseParallelGC || UseParallelOldGC || UseSerialGC) { |
ysr@777 | 2601 | #ifndef PRODUCT |
ysr@777 | 2602 | tty->print_cr("-XX:+UseG1GC is incompatible with other collectors, using UseG1GC"); |
ysr@777 | 2603 | #endif // PRODUCT |
ysr@777 | 2604 | UseConcMarkSweepGC = false; |
ysr@777 | 2605 | UseParNewGC = false; |
ysr@777 | 2606 | UseParallelGC = false; |
ysr@777 | 2607 | UseParallelOldGC = false; |
ysr@777 | 2608 | UseSerialGC = false; |
ysr@777 | 2609 | } |
ysr@777 | 2610 | no_shared_spaces(); |
ysr@777 | 2611 | } |
ysr@777 | 2612 | |
duke@435 | 2613 | #ifndef PRODUCT |
duke@435 | 2614 | if (TraceBytecodesAt != 0) { |
duke@435 | 2615 | TraceBytecodes = true; |
duke@435 | 2616 | } |
duke@435 | 2617 | if (CountCompiledCalls) { |
duke@435 | 2618 | if (UseCounterDecay) { |
duke@435 | 2619 | warning("UseCounterDecay disabled because CountCalls is set"); |
duke@435 | 2620 | UseCounterDecay = false; |
duke@435 | 2621 | } |
duke@435 | 2622 | } |
duke@435 | 2623 | #endif // PRODUCT |
duke@435 | 2624 | |
duke@435 | 2625 | if (PrintGCDetails) { |
duke@435 | 2626 | // Turn on -verbose:gc options as well |
duke@435 | 2627 | PrintGC = true; |
duke@435 | 2628 | if (FLAG_IS_DEFAULT(TraceClassUnloading)) { |
duke@435 | 2629 | TraceClassUnloading = true; |
duke@435 | 2630 | } |
duke@435 | 2631 | } |
duke@435 | 2632 | |
duke@435 | 2633 | #ifdef SERIALGC |
duke@435 | 2634 | set_serial_gc_flags(); |
duke@435 | 2635 | #endif // SERIALGC |
duke@435 | 2636 | #ifdef KERNEL |
duke@435 | 2637 | no_shared_spaces(); |
duke@435 | 2638 | #endif // KERNEL |
duke@435 | 2639 | |
duke@435 | 2640 | // Set flags based on ergonomics. |
duke@435 | 2641 | set_ergonomics_flags(); |
duke@435 | 2642 | |
jmasa@445 | 2643 | // Check the GC selections again. |
jmasa@445 | 2644 | if (!check_gc_consistency()) { |
jmasa@445 | 2645 | return JNI_EINVAL; |
jmasa@445 | 2646 | } |
jmasa@445 | 2647 | |
jmasa@448 | 2648 | if (UseParallelGC || UseParallelOldGC) { |
jmasa@445 | 2649 | // Set some flags for ParallelGC if needed. |
jmasa@445 | 2650 | set_parallel_gc_flags(); |
jmasa@445 | 2651 | } else if (UseConcMarkSweepGC) { |
jmasa@445 | 2652 | // Set some flags for CMS |
jmasa@445 | 2653 | set_cms_and_parnew_gc_flags(); |
jmasa@445 | 2654 | } else if (UseParNewGC) { |
jmasa@445 | 2655 | // Set some flags for ParNew |
jmasa@445 | 2656 | set_parnew_gc_flags(); |
jmasa@445 | 2657 | } |
ysr@777 | 2658 | // Temporary; make the "if" an "else-if" before |
ysr@777 | 2659 | // we integrate G1. XXX |
ysr@777 | 2660 | if (UseG1GC) { |
ysr@777 | 2661 | // Set some flags for garbage-first, if needed. |
ysr@777 | 2662 | set_g1_gc_flags(); |
ysr@777 | 2663 | } |
jmasa@445 | 2664 | |
duke@435 | 2665 | #ifdef SERIALGC |
duke@435 | 2666 | assert(verify_serial_gc_flags(), "SerialGC unset"); |
duke@435 | 2667 | #endif // SERIALGC |
duke@435 | 2668 | |
duke@435 | 2669 | // Set bytecode rewriting flags |
duke@435 | 2670 | set_bytecode_flags(); |
duke@435 | 2671 | |
duke@435 | 2672 | // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. |
duke@435 | 2673 | set_aggressive_opts_flags(); |
duke@435 | 2674 | |
duke@435 | 2675 | #ifdef CC_INTERP |
duke@435 | 2676 | // Biased locking is not implemented with c++ interpreter |
duke@435 | 2677 | FLAG_SET_DEFAULT(UseBiasedLocking, false); |
duke@435 | 2678 | #endif /* CC_INTERP */ |
duke@435 | 2679 | |
kvn@855 | 2680 | #ifdef COMPILER2 |
kvn@855 | 2681 | if (!UseBiasedLocking || EmitSync != 0) { |
kvn@855 | 2682 | UseOptoBiasInlining = false; |
kvn@855 | 2683 | } |
kvn@855 | 2684 | #endif |
kvn@855 | 2685 | |
duke@435 | 2686 | if (PrintCommandLineFlags) { |
duke@435 | 2687 | CommandLineFlags::printSetFlags(); |
duke@435 | 2688 | } |
duke@435 | 2689 | |
jmasa@445 | 2690 | #ifdef ASSERT |
jmasa@445 | 2691 | if (PrintFlagsFinal) { |
jmasa@445 | 2692 | CommandLineFlags::printFlags(); |
jmasa@445 | 2693 | } |
jmasa@445 | 2694 | #endif |
jmasa@445 | 2695 | |
duke@435 | 2696 | return JNI_OK; |
duke@435 | 2697 | } |
duke@435 | 2698 | |
duke@435 | 2699 | int Arguments::PropertyList_count(SystemProperty* pl) { |
duke@435 | 2700 | int count = 0; |
duke@435 | 2701 | while(pl != NULL) { |
duke@435 | 2702 | count++; |
duke@435 | 2703 | pl = pl->next(); |
duke@435 | 2704 | } |
duke@435 | 2705 | return count; |
duke@435 | 2706 | } |
duke@435 | 2707 | |
duke@435 | 2708 | const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { |
duke@435 | 2709 | assert(key != NULL, "just checking"); |
duke@435 | 2710 | SystemProperty* prop; |
duke@435 | 2711 | for (prop = pl; prop != NULL; prop = prop->next()) { |
duke@435 | 2712 | if (strcmp(key, prop->key()) == 0) return prop->value(); |
duke@435 | 2713 | } |
duke@435 | 2714 | return NULL; |
duke@435 | 2715 | } |
duke@435 | 2716 | |
duke@435 | 2717 | const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { |
duke@435 | 2718 | int count = 0; |
duke@435 | 2719 | const char* ret_val = NULL; |
duke@435 | 2720 | |
duke@435 | 2721 | while(pl != NULL) { |
duke@435 | 2722 | if(count >= index) { |
duke@435 | 2723 | ret_val = pl->key(); |
duke@435 | 2724 | break; |
duke@435 | 2725 | } |
duke@435 | 2726 | count++; |
duke@435 | 2727 | pl = pl->next(); |
duke@435 | 2728 | } |
duke@435 | 2729 | |
duke@435 | 2730 | return ret_val; |
duke@435 | 2731 | } |
duke@435 | 2732 | |
duke@435 | 2733 | char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { |
duke@435 | 2734 | int count = 0; |
duke@435 | 2735 | char* ret_val = NULL; |
duke@435 | 2736 | |
duke@435 | 2737 | while(pl != NULL) { |
duke@435 | 2738 | if(count >= index) { |
duke@435 | 2739 | ret_val = pl->value(); |
duke@435 | 2740 | break; |
duke@435 | 2741 | } |
duke@435 | 2742 | count++; |
duke@435 | 2743 | pl = pl->next(); |
duke@435 | 2744 | } |
duke@435 | 2745 | |
duke@435 | 2746 | return ret_val; |
duke@435 | 2747 | } |
duke@435 | 2748 | |
duke@435 | 2749 | void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { |
duke@435 | 2750 | SystemProperty* p = *plist; |
duke@435 | 2751 | if (p == NULL) { |
duke@435 | 2752 | *plist = new_p; |
duke@435 | 2753 | } else { |
duke@435 | 2754 | while (p->next() != NULL) { |
duke@435 | 2755 | p = p->next(); |
duke@435 | 2756 | } |
duke@435 | 2757 | p->set_next(new_p); |
duke@435 | 2758 | } |
duke@435 | 2759 | } |
duke@435 | 2760 | |
duke@435 | 2761 | void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { |
duke@435 | 2762 | if (plist == NULL) |
duke@435 | 2763 | return; |
duke@435 | 2764 | |
duke@435 | 2765 | SystemProperty* new_p = new SystemProperty(k, v, true); |
duke@435 | 2766 | PropertyList_add(plist, new_p); |
duke@435 | 2767 | } |
duke@435 | 2768 | |
duke@435 | 2769 | // This add maintains unique property key in the list. |
duke@435 | 2770 | void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v) { |
duke@435 | 2771 | if (plist == NULL) |
duke@435 | 2772 | return; |
duke@435 | 2773 | |
duke@435 | 2774 | // If property key exist then update with new value. |
duke@435 | 2775 | SystemProperty* prop; |
duke@435 | 2776 | for (prop = *plist; prop != NULL; prop = prop->next()) { |
duke@435 | 2777 | if (strcmp(k, prop->key()) == 0) { |
duke@435 | 2778 | prop->set_value(v); |
duke@435 | 2779 | return; |
duke@435 | 2780 | } |
duke@435 | 2781 | } |
duke@435 | 2782 | |
duke@435 | 2783 | PropertyList_add(plist, k, v); |
duke@435 | 2784 | } |
duke@435 | 2785 | |
duke@435 | 2786 | #ifdef KERNEL |
duke@435 | 2787 | char *Arguments::get_kernel_properties() { |
duke@435 | 2788 | // Find properties starting with kernel and append them to string |
duke@435 | 2789 | // We need to find out how long they are first because the URL's that they |
duke@435 | 2790 | // might point to could get long. |
duke@435 | 2791 | int length = 0; |
duke@435 | 2792 | SystemProperty* prop; |
duke@435 | 2793 | for (prop = _system_properties; prop != NULL; prop = prop->next()) { |
duke@435 | 2794 | if (strncmp(prop->key(), "kernel.", 7 ) == 0) { |
duke@435 | 2795 | length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" |
duke@435 | 2796 | } |
duke@435 | 2797 | } |
duke@435 | 2798 | // Add one for null terminator. |
duke@435 | 2799 | char *props = AllocateHeap(length + 1, "get_kernel_properties"); |
duke@435 | 2800 | if (length != 0) { |
duke@435 | 2801 | int pos = 0; |
duke@435 | 2802 | for (prop = _system_properties; prop != NULL; prop = prop->next()) { |
duke@435 | 2803 | if (strncmp(prop->key(), "kernel.", 7 ) == 0) { |
duke@435 | 2804 | jio_snprintf(&props[pos], length-pos, |
duke@435 | 2805 | "-D%s=%s ", prop->key(), prop->value()); |
duke@435 | 2806 | pos = strlen(props); |
duke@435 | 2807 | } |
duke@435 | 2808 | } |
duke@435 | 2809 | } |
duke@435 | 2810 | // null terminate props in case of null |
duke@435 | 2811 | props[length] = '\0'; |
duke@435 | 2812 | return props; |
duke@435 | 2813 | } |
duke@435 | 2814 | #endif // KERNEL |
duke@435 | 2815 | |
duke@435 | 2816 | // Copies src into buf, replacing "%%" with "%" and "%p" with pid |
duke@435 | 2817 | // Returns true if all of the source pointed by src has been copied over to |
duke@435 | 2818 | // the destination buffer pointed by buf. Otherwise, returns false. |
duke@435 | 2819 | // Notes: |
duke@435 | 2820 | // 1. If the length (buflen) of the destination buffer excluding the |
duke@435 | 2821 | // NULL terminator character is not long enough for holding the expanded |
duke@435 | 2822 | // pid characters, it also returns false instead of returning the partially |
duke@435 | 2823 | // expanded one. |
duke@435 | 2824 | // 2. The passed in "buflen" should be large enough to hold the null terminator. |
duke@435 | 2825 | bool Arguments::copy_expand_pid(const char* src, size_t srclen, |
duke@435 | 2826 | char* buf, size_t buflen) { |
duke@435 | 2827 | const char* p = src; |
duke@435 | 2828 | char* b = buf; |
duke@435 | 2829 | const char* src_end = &src[srclen]; |
duke@435 | 2830 | char* buf_end = &buf[buflen - 1]; |
duke@435 | 2831 | |
duke@435 | 2832 | while (p < src_end && b < buf_end) { |
duke@435 | 2833 | if (*p == '%') { |
duke@435 | 2834 | switch (*(++p)) { |
duke@435 | 2835 | case '%': // "%%" ==> "%" |
duke@435 | 2836 | *b++ = *p++; |
duke@435 | 2837 | break; |
duke@435 | 2838 | case 'p': { // "%p" ==> current process id |
duke@435 | 2839 | // buf_end points to the character before the last character so |
duke@435 | 2840 | // that we could write '\0' to the end of the buffer. |
duke@435 | 2841 | size_t buf_sz = buf_end - b + 1; |
duke@435 | 2842 | int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); |
duke@435 | 2843 | |
duke@435 | 2844 | // if jio_snprintf fails or the buffer is not long enough to hold |
duke@435 | 2845 | // the expanded pid, returns false. |
duke@435 | 2846 | if (ret < 0 || ret >= (int)buf_sz) { |
duke@435 | 2847 | return false; |
duke@435 | 2848 | } else { |
duke@435 | 2849 | b += ret; |
duke@435 | 2850 | assert(*b == '\0', "fail in copy_expand_pid"); |
duke@435 | 2851 | if (p == src_end && b == buf_end + 1) { |
duke@435 | 2852 | // reach the end of the buffer. |
duke@435 | 2853 | return true; |
duke@435 | 2854 | } |
duke@435 | 2855 | } |
duke@435 | 2856 | p++; |
duke@435 | 2857 | break; |
duke@435 | 2858 | } |
duke@435 | 2859 | default : |
duke@435 | 2860 | *b++ = '%'; |
duke@435 | 2861 | } |
duke@435 | 2862 | } else { |
duke@435 | 2863 | *b++ = *p++; |
duke@435 | 2864 | } |
duke@435 | 2865 | } |
duke@435 | 2866 | *b = '\0'; |
duke@435 | 2867 | return (p == src_end); // return false if not all of the source was copied |
duke@435 | 2868 | } |