Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 1150:f62a22282a47
6914622: Print values of all flags for product VM
Summary: Change the flag -XX:+PrintFlagsFinal to product and add new product flag -XX:+PrintFlagsInitial.
Reviewed-by: phh, ysr
Contributed-by: gbenson@redhat.com
| author | kvn |
|---|---|
| date | Thu, 07 Jan 2010 16:24:17 -0800 |
| parents | e66fd840cb6b |
| children | 4e6abf09f540 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 579 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_arguments.cpp.incl" | |
| 27 | |
| 28 #define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp" | |
| 29 #define DEFAULT_JAVA_LAUNCHER "generic" | |
| 30 | |
| 31 char** Arguments::_jvm_flags_array = NULL; | |
| 32 int Arguments::_num_jvm_flags = 0; | |
| 33 char** Arguments::_jvm_args_array = NULL; | |
| 34 int Arguments::_num_jvm_args = 0; | |
| 35 char* Arguments::_java_command = NULL; | |
| 36 SystemProperty* Arguments::_system_properties = NULL; | |
| 37 const char* Arguments::_gc_log_filename = NULL; | |
| 38 bool Arguments::_has_profile = false; | |
| 39 bool Arguments::_has_alloc_profile = false; | |
| 40 uintx Arguments::_min_heap_size = 0; | |
| 41 Arguments::Mode Arguments::_mode = _mixed; | |
| 42 bool Arguments::_java_compiler = false; | |
| 43 bool Arguments::_xdebug_mode = false; | |
| 44 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 45 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 46 int Arguments::_sun_java_launcher_pid = -1; | |
| 47 | |
| 48 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 49 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 50 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 51 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 52 bool Arguments::_ClipInlining = ClipInlining; | |
| 53 intx Arguments::_Tier2CompileThreshold = Tier2CompileThreshold; | |
| 54 | |
| 55 char* Arguments::SharedArchivePath = NULL; | |
| 56 | |
| 57 AgentLibraryList Arguments::_libraryList; | |
| 58 AgentLibraryList Arguments::_agentList; | |
| 59 | |
| 60 abort_hook_t Arguments::_abort_hook = NULL; | |
| 61 exit_hook_t Arguments::_exit_hook = NULL; | |
| 62 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 63 | |
| 64 | |
| 65 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 66 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 67 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 68 SystemProperty *Arguments::_java_library_path = NULL; | |
| 69 SystemProperty *Arguments::_java_home = NULL; | |
| 70 SystemProperty *Arguments::_java_class_path = NULL; | |
| 71 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
| 72 | |
| 73 char* Arguments::_meta_index_path = NULL; | |
| 74 char* Arguments::_meta_index_dir = NULL; | |
| 75 | |
| 76 static bool force_client_mode = false; | |
| 77 | |
| 78 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 79 | |
| 80 static bool match_option(const JavaVMOption *option, const char* name, | |
| 81 const char** tail) { | |
| 82 int len = (int)strlen(name); | |
| 83 if (strncmp(option->optionString, name, len) == 0) { | |
| 84 *tail = option->optionString + len; | |
| 85 return true; | |
| 86 } else { | |
| 87 return false; | |
| 88 } | |
| 89 } | |
| 90 | |
| 91 static void logOption(const char* opt) { | |
| 92 if (PrintVMOptions) { | |
| 93 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 94 } | |
| 95 } | |
| 96 | |
| 97 // Process java launcher properties. | |
| 98 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 99 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 100 // Must do this before setting up other system properties, | |
| 101 // as some of them may depend on launcher type. | |
| 102 for (int index = 0; index < args->nOptions; index++) { | |
| 103 const JavaVMOption* option = args->options + index; | |
| 104 const char* tail; | |
| 105 | |
| 106 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 107 process_java_launcher_argument(tail, option->extraInfo); | |
| 108 continue; | |
| 109 } | |
| 110 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 111 _sun_java_launcher_pid = atoi(tail); | |
| 112 continue; | |
| 113 } | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 // Initialize system properties key and value. | |
| 118 void Arguments::init_system_properties() { | |
| 119 | |
| 120 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.version", "1.0", false)); | |
| 121 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 122 "Java Virtual Machine Specification", false)); | |
| 123 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.vendor", | |
| 124 "Sun Microsystems Inc.", false)); | |
| 125 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 126 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 127 PropertyList_add(&_system_properties, new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); | |
| 128 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 129 | |
| 130 // following are JVMTI agent writeable properties. | |
| 131 // Properties values are set to NULL and they are | |
| 132 // os specific they are initialized in os::init_system_properties_values(). | |
| 133 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 134 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 135 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 136 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 137 _java_home = new SystemProperty("java.home", NULL, true); | |
| 138 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
| 139 | |
| 140 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 141 | |
| 142 // Add to System Property list. | |
| 143 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 144 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 145 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 146 PropertyList_add(&_system_properties, _java_library_path); | |
| 147 PropertyList_add(&_system_properties, _java_home); | |
| 148 PropertyList_add(&_system_properties, _java_class_path); | |
| 149 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
| 150 | |
| 151 // Set OS specific system properties values | |
| 152 os::init_system_properties_values(); | |
| 153 } | |
| 154 | |
| 242 | 155 /** |
| 156 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 157 * When a flag is eliminated, it can be added to this list in order to | |
| 158 * continue accepting this flag on the command-line, while issuing a warning | |
| 159 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 160 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 161 * a flag to die correctly over JDK releases using HSX. | |
| 162 */ | |
| 163 typedef struct { | |
| 164 const char* name; | |
| 165 JDK_Version obsoleted_in; // when the flag went away | |
| 166 JDK_Version accept_until; // which version to start denying the existence | |
| 167 } ObsoleteFlag; | |
| 0 | 168 |
| 242 | 169 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 170 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 171 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 172 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 173 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 174 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 175 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 176 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 177 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 178 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 179 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 180 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 181 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 182 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 183 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 1064 | 184 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
| 185 { "DefaultInitialRAMFraction", | |
| 186 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
| 242 | 187 { NULL, JDK_Version(0), JDK_Version(0) } |
| 188 }; | |
| 189 | |
| 190 // Returns true if the flag is obsolete and fits into the range specified | |
| 191 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 192 // value is filled in with the version number when the flag became | |
| 193 // obsolete so that that value can be displayed to the user. | |
| 194 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 195 int i = 0; |
| 242 | 196 assert(version != NULL, "Must provide a version buffer"); |
| 197 while (obsolete_jvm_flags[i].name != NULL) { | |
| 198 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 199 // <flag>=xxx form |
| 200 // [-|+]<flag> form | |
| 242 | 201 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 202 ((s[0] == '+' || s[0] == '-') && |
| 242 | 203 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 204 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 205 *version = flag_status.obsoleted_in; | |
| 206 return true; | |
| 207 } | |
| 0 | 208 } |
| 209 i++; | |
| 210 } | |
| 211 return false; | |
| 212 } | |
| 213 | |
| 214 // Constructs the system class path (aka boot class path) from the following | |
| 215 // components, in order: | |
| 216 // | |
| 217 // prefix // from -Xbootclasspath/p:... | |
| 218 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 219 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 220 // suffix // from -Xbootclasspath/a:... | |
| 221 // | |
| 222 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 223 // directories are added to the sysclasspath just before the base. | |
| 224 // | |
| 225 // This could be AllStatic, but it isn't needed after argument processing is | |
| 226 // complete. | |
| 227 class SysClassPath: public StackObj { | |
| 228 public: | |
| 229 SysClassPath(const char* base); | |
| 230 ~SysClassPath(); | |
| 231 | |
| 232 inline void set_base(const char* base); | |
| 233 inline void add_prefix(const char* prefix); | |
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234 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 235 inline void add_suffix(const char* suffix); |
| 236 inline void reset_path(const char* base); | |
| 237 | |
| 238 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 239 // property. Must be called after all command-line arguments have been | |
| 240 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 241 // combined_path(). | |
| 242 void expand_endorsed(); | |
| 243 | |
| 244 inline const char* get_base() const { return _items[_scp_base]; } | |
| 245 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 246 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 247 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 248 | |
| 249 // Combine all the components into a single c-heap-allocated string; caller | |
| 250 // must free the string if/when no longer needed. | |
| 251 char* combined_path(); | |
| 252 | |
| 253 private: | |
| 254 // Utility routines. | |
| 255 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 256 static char* add_jars_to_path(char* path, const char* directory); | |
| 257 | |
| 258 inline void reset_item_at(int index); | |
| 259 | |
| 260 // Array indices for the items that make up the sysclasspath. All except the | |
| 261 // base are allocated in the C heap and freed by this class. | |
| 262 enum { | |
| 263 _scp_prefix, // from -Xbootclasspath/p:... | |
| 264 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 265 _scp_base, // the default sysclasspath | |
| 266 _scp_suffix, // from -Xbootclasspath/a:... | |
| 267 _scp_nitems // the number of items, must be last. | |
| 268 }; | |
| 269 | |
| 270 const char* _items[_scp_nitems]; | |
| 271 DEBUG_ONLY(bool _expansion_done;) | |
| 272 }; | |
| 273 | |
| 274 SysClassPath::SysClassPath(const char* base) { | |
| 275 memset(_items, 0, sizeof(_items)); | |
| 276 _items[_scp_base] = base; | |
| 277 DEBUG_ONLY(_expansion_done = false;) | |
| 278 } | |
| 279 | |
| 280 SysClassPath::~SysClassPath() { | |
| 281 // Free everything except the base. | |
| 282 for (int i = 0; i < _scp_nitems; ++i) { | |
| 283 if (i != _scp_base) reset_item_at(i); | |
| 284 } | |
| 285 DEBUG_ONLY(_expansion_done = false;) | |
| 286 } | |
| 287 | |
| 288 inline void SysClassPath::set_base(const char* base) { | |
| 289 _items[_scp_base] = base; | |
| 290 } | |
| 291 | |
| 292 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 293 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 294 } | |
| 295 | |
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296 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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297 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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298 } |
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299 |
| 0 | 300 inline void SysClassPath::add_suffix(const char* suffix) { |
| 301 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 302 } | |
| 303 | |
| 304 inline void SysClassPath::reset_item_at(int index) { | |
| 305 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 306 if (_items[index] != NULL) { | |
| 307 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 308 _items[index] = NULL; | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 inline void SysClassPath::reset_path(const char* base) { | |
| 313 // Clear the prefix and suffix. | |
| 314 reset_item_at(_scp_prefix); | |
| 315 reset_item_at(_scp_suffix); | |
| 316 set_base(base); | |
| 317 } | |
| 318 | |
| 319 //------------------------------------------------------------------------------ | |
| 320 | |
| 321 void SysClassPath::expand_endorsed() { | |
| 322 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 323 | |
| 324 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 325 if (path == NULL) { | |
| 326 path = Arguments::get_endorsed_dir(); | |
| 327 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 328 } | |
| 329 | |
| 330 char* expanded_path = NULL; | |
| 331 const char separator = *os::path_separator(); | |
| 332 const char* const end = path + strlen(path); | |
| 333 while (path < end) { | |
| 334 const char* tmp_end = strchr(path, separator); | |
| 335 if (tmp_end == NULL) { | |
| 336 expanded_path = add_jars_to_path(expanded_path, path); | |
| 337 path = end; | |
| 338 } else { | |
| 339 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 340 memcpy(dirpath, path, tmp_end - path); | |
| 341 dirpath[tmp_end - path] = '\0'; | |
| 342 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 343 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 344 path = tmp_end + 1; | |
| 345 } | |
| 346 } | |
| 347 _items[_scp_endorsed] = expanded_path; | |
| 348 DEBUG_ONLY(_expansion_done = true;) | |
| 349 } | |
| 350 | |
| 351 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 352 // c-heap-allocated string. | |
| 353 char* SysClassPath::combined_path() { | |
| 354 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 355 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 356 | |
| 357 size_t lengths[_scp_nitems]; | |
| 358 size_t total_len = 0; | |
| 359 | |
| 360 const char separator = *os::path_separator(); | |
| 361 | |
| 362 // Get the lengths. | |
| 363 int i; | |
| 364 for (i = 0; i < _scp_nitems; ++i) { | |
| 365 if (_items[i] != NULL) { | |
| 366 lengths[i] = strlen(_items[i]); | |
| 367 // Include space for the separator char (or a NULL for the last item). | |
| 368 total_len += lengths[i] + 1; | |
| 369 } | |
| 370 } | |
| 371 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 372 | |
| 373 // Copy the _items to a single string. | |
| 374 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 375 char* cp_tmp = cp; | |
| 376 for (i = 0; i < _scp_nitems; ++i) { | |
| 377 if (_items[i] != NULL) { | |
| 378 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 379 cp_tmp += lengths[i]; | |
| 380 *cp_tmp++ = separator; | |
| 381 } | |
| 382 } | |
| 383 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 384 return cp; | |
| 385 } | |
| 386 | |
| 387 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 388 char* | |
| 389 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 390 char *cp; | |
| 391 | |
| 392 assert(str != NULL, "just checking"); | |
| 393 if (path == NULL) { | |
| 394 size_t len = strlen(str) + 1; | |
| 395 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 396 memcpy(cp, str, len); // copy the trailing null | |
| 397 } else { | |
| 398 const char separator = *os::path_separator(); | |
| 399 size_t old_len = strlen(path); | |
| 400 size_t str_len = strlen(str); | |
| 401 size_t len = old_len + str_len + 2; | |
| 402 | |
| 403 if (prepend) { | |
| 404 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 405 char* cp_tmp = cp; | |
| 406 memcpy(cp_tmp, str, str_len); | |
| 407 cp_tmp += str_len; | |
| 408 *cp_tmp = separator; | |
| 409 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 410 FREE_C_HEAP_ARRAY(char, path); | |
| 411 } else { | |
| 412 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 413 char* cp_tmp = cp + old_len; | |
| 414 *cp_tmp = separator; | |
| 415 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 416 } | |
| 417 } | |
| 418 return cp; | |
| 419 } | |
| 420 | |
| 421 // Scan the directory and append any jar or zip files found to path. | |
| 422 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 423 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 424 DIR* dir = os::opendir(directory); | |
| 425 if (dir == NULL) return path; | |
| 426 | |
| 427 char dir_sep[2] = { '\0', '\0' }; | |
| 428 size_t directory_len = strlen(directory); | |
| 429 const char fileSep = *os::file_separator(); | |
| 430 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 431 | |
| 432 /* Scan the directory for jars/zips, appending them to path. */ | |
| 433 struct dirent *entry; | |
| 434 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 435 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 436 const char* name = entry->d_name; | |
| 437 const char* ext = name + strlen(name) - 4; | |
| 438 bool isJarOrZip = ext > name && | |
| 439 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 440 os::file_name_strcmp(ext, ".zip") == 0); | |
| 441 if (isJarOrZip) { | |
| 442 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 443 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 444 path = add_to_path(path, jarpath, false); | |
| 445 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 446 } | |
| 447 } | |
| 448 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 449 os::closedir(dir); | |
| 450 return path; | |
| 451 } | |
| 452 | |
| 453 // Parses a memory size specification string. | |
|
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454 static bool atomull(const char *s, julong* result) { |
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455 julong n = 0; |
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456 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 457 if (args_read != 1) { |
| 458 return false; | |
| 459 } | |
| 460 while (*s != '\0' && isdigit(*s)) { | |
| 461 s++; | |
| 462 } | |
| 463 // 4705540: illegal if more characters are found after the first non-digit | |
| 464 if (strlen(s) > 1) { | |
| 465 return false; | |
| 466 } | |
| 467 switch (*s) { | |
| 468 case 'T': case 't': | |
| 469 *result = n * G * K; | |
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470 // Check for overflow. |
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471 if (*result/((julong)G * K) != n) return false; |
| 0 | 472 return true; |
| 473 case 'G': case 'g': | |
| 474 *result = n * G; | |
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475 if (*result/G != n) return false; |
| 0 | 476 return true; |
| 477 case 'M': case 'm': | |
| 478 *result = n * M; | |
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479 if (*result/M != n) return false; |
| 0 | 480 return true; |
| 481 case 'K': case 'k': | |
| 482 *result = n * K; | |
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483 if (*result/K != n) return false; |
| 0 | 484 return true; |
| 485 case '\0': | |
| 486 *result = n; | |
| 487 return true; | |
| 488 default: | |
| 489 return false; | |
| 490 } | |
| 491 } | |
| 492 | |
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493 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 494 if (size < min_size) return arg_too_small; |
| 495 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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496 if (size > max_uintx) return arg_too_big; |
| 0 | 497 return arg_in_range; |
| 498 } | |
| 499 | |
| 500 // Describe an argument out of range error | |
| 501 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 502 switch(errcode) { | |
| 503 case arg_too_big: | |
| 504 jio_fprintf(defaultStream::error_stream(), | |
| 505 "The specified size exceeds the maximum " | |
| 506 "representable size.\n"); | |
| 507 break; | |
| 508 case arg_too_small: | |
| 509 case arg_unreadable: | |
| 510 case arg_in_range: | |
| 511 // do nothing for now | |
| 512 break; | |
| 513 default: | |
| 514 ShouldNotReachHere(); | |
| 515 } | |
| 516 } | |
| 517 | |
| 518 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 519 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 520 } | |
| 521 | |
| 522 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 523 double v; | |
| 524 if (sscanf(value, "%lf", &v) != 1) { | |
| 525 return false; | |
| 526 } | |
| 527 | |
| 528 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 529 return true; | |
| 530 } | |
| 531 return false; | |
| 532 } | |
| 533 | |
| 534 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
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535 julong v; |
| 0 | 536 intx intx_v; |
| 537 bool is_neg = false; | |
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538 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 539 if (*value == '-') { |
| 540 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 541 return false; | |
| 542 } | |
| 543 value++; | |
| 544 is_neg = true; | |
| 545 } | |
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546 if (!atomull(value, &v)) { |
| 0 | 547 return false; |
| 548 } | |
| 549 intx_v = (intx) v; | |
| 550 if (is_neg) { | |
| 551 intx_v = -intx_v; | |
| 552 } | |
| 553 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 554 return true; | |
| 555 } | |
| 556 uintx uintx_v = (uintx) v; | |
| 557 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 558 return true; | |
| 559 } | |
| 1064 | 560 uint64_t uint64_t_v = (uint64_t) v; |
| 561 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
| 562 return true; | |
| 563 } | |
| 0 | 564 return false; |
| 565 } | |
| 566 | |
| 567 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 568 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 569 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 570 FREE_C_HEAP_ARRAY(char, value); | |
| 571 return true; | |
| 572 } | |
| 573 | |
| 574 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 575 const char* old_value = ""; | |
| 576 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 577 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 578 size_t new_len = strlen(new_value); | |
| 579 const char* value; | |
| 580 char* free_this_too = NULL; | |
| 581 if (old_len == 0) { | |
| 582 value = new_value; | |
| 583 } else if (new_len == 0) { | |
| 584 value = old_value; | |
| 585 } else { | |
| 586 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 587 // each new setting adds another LINE to the switch: | |
| 588 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 589 value = buf; | |
| 590 free_this_too = buf; | |
| 591 } | |
| 592 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 593 // CommandLineFlags always returns a pointer that needs freeing. | |
| 594 FREE_C_HEAP_ARRAY(char, value); | |
| 595 if (free_this_too != NULL) { | |
| 596 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 597 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 598 } | |
| 599 return true; | |
| 600 } | |
| 601 | |
| 602 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 603 | |
| 604 // range of acceptable characters spelled out for portability reasons | |
| 605 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 606 #define BUFLEN 255 | |
| 607 char name[BUFLEN+1]; | |
| 608 char dummy; | |
| 609 | |
| 610 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 611 return set_bool_flag(name, false, origin); | |
| 612 } | |
| 613 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 614 return set_bool_flag(name, true, origin); | |
| 615 } | |
| 616 | |
| 617 char punct; | |
| 618 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 619 const char* value = strchr(arg, '=') + 1; | |
| 620 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 621 if (flag != NULL && flag->is_ccstr()) { | |
| 622 if (flag->ccstr_accumulates()) { | |
| 623 return append_to_string_flag(name, value, origin); | |
| 624 } else { | |
| 625 if (value[0] == '\0') { | |
| 626 value = NULL; | |
| 627 } | |
| 628 return set_string_flag(name, value, origin); | |
| 629 } | |
| 630 } | |
| 631 } | |
| 632 | |
| 633 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 634 const char* value = strchr(arg, '=') + 1; | |
| 635 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 636 if (value[0] == '\0') { | |
| 637 value = NULL; | |
| 638 } | |
| 639 return set_string_flag(name, value, origin); | |
| 640 } | |
| 641 | |
| 642 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 643 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 644 #define NUMBER_RANGE "[0123456789]" | |
| 645 char value[BUFLEN + 1]; | |
| 646 char value2[BUFLEN + 1]; | |
| 647 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 648 // Looks like a floating-point number -- try again with more lenient format string | |
| 649 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 650 return set_fp_numeric_flag(name, value, origin); | |
| 651 } | |
| 652 } | |
| 653 | |
| 654 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 655 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 656 return set_numeric_flag(name, value, origin); | |
| 657 } | |
| 658 | |
| 659 return false; | |
| 660 } | |
| 661 | |
| 662 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 663 assert(bldarray != NULL, "illegal argument"); | |
| 664 | |
| 665 if (arg == NULL) { | |
| 666 return; | |
| 667 } | |
| 668 | |
| 669 int index = *count; | |
| 670 | |
| 671 // expand the array and add arg to the last element | |
| 672 (*count)++; | |
| 673 if (*bldarray == NULL) { | |
| 674 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 675 } else { | |
| 676 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 677 } | |
| 678 (*bldarray)[index] = strdup(arg); | |
| 679 } | |
| 680 | |
| 681 void Arguments::build_jvm_args(const char* arg) { | |
| 682 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 683 } | |
| 684 | |
| 685 void Arguments::build_jvm_flags(const char* arg) { | |
| 686 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 687 } | |
| 688 | |
| 689 // utility function to return a string that concatenates all | |
| 690 // strings in a given char** array | |
| 691 const char* Arguments::build_resource_string(char** args, int count) { | |
| 692 if (args == NULL || count == 0) { | |
| 693 return NULL; | |
| 694 } | |
| 695 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 696 for (int i = 1; i < count; i++) { | |
| 697 length += strlen(args[i]) + 1; // add 1 for a space | |
| 698 } | |
| 699 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 700 strcpy(s, args[0]); | |
| 701 for (int j = 1; j < count; j++) { | |
| 702 strcat(s, " "); | |
| 703 strcat(s, args[j]); | |
| 704 } | |
| 705 return (const char*) s; | |
| 706 } | |
| 707 | |
| 708 void Arguments::print_on(outputStream* st) { | |
| 709 st->print_cr("VM Arguments:"); | |
| 710 if (num_jvm_flags() > 0) { | |
| 711 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 712 } | |
| 713 if (num_jvm_args() > 0) { | |
| 714 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 715 } | |
| 716 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 717 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 718 } | |
| 719 | |
| 720 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 721 if (_num_jvm_flags > 0) { | |
| 722 for (int i=0; i < _num_jvm_flags; i++) { | |
| 723 st->print("%s ", _jvm_flags_array[i]); | |
| 724 } | |
| 725 st->print_cr(""); | |
| 726 } | |
| 727 } | |
| 728 | |
| 729 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 730 if (_num_jvm_args > 0) { | |
| 731 for (int i=0; i < _num_jvm_args; i++) { | |
| 732 st->print("%s ", _jvm_args_array[i]); | |
| 733 } | |
| 734 st->print_cr(""); | |
| 735 } | |
| 736 } | |
| 737 | |
| 242 | 738 bool Arguments::process_argument(const char* arg, |
| 739 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 740 | |
| 741 JDK_Version since = JDK_Version(); | |
| 0 | 742 |
| 743 if (parse_argument(arg, origin)) { | |
| 744 // do nothing | |
| 242 | 745 } else if (is_newly_obsolete(arg, &since)) { |
| 746 enum { bufsize = 256 }; | |
| 747 char buffer[bufsize]; | |
| 748 since.to_string(buffer, bufsize); | |
| 0 | 749 jio_fprintf(defaultStream::error_stream(), |
| 242 | 750 "Warning: The flag %s has been EOL'd as of %s and will" |
| 751 " be ignored\n", arg, buffer); | |
| 0 | 752 } else { |
| 753 if (!ignore_unrecognized) { | |
| 754 jio_fprintf(defaultStream::error_stream(), | |
| 755 "Unrecognized VM option '%s'\n", arg); | |
| 756 // allow for commandline "commenting out" options like -XX:#+Verbose | |
| 757 if (strlen(arg) == 0 || arg[0] != '#') { | |
| 758 return false; | |
| 759 } | |
| 760 } | |
| 761 } | |
| 762 return true; | |
| 763 } | |
| 764 | |
| 765 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 766 FILE* stream = fopen(file_name, "rb"); | |
| 767 if (stream == NULL) { | |
| 768 if (should_exist) { | |
| 769 jio_fprintf(defaultStream::error_stream(), | |
| 770 "Could not open settings file %s\n", file_name); | |
| 771 return false; | |
| 772 } else { | |
| 773 return true; | |
| 774 } | |
| 775 } | |
| 776 | |
| 777 char token[1024]; | |
| 778 int pos = 0; | |
| 779 | |
| 780 bool in_white_space = true; | |
| 781 bool in_comment = false; | |
| 782 bool in_quote = false; | |
| 783 char quote_c = 0; | |
| 784 bool result = true; | |
| 785 | |
| 786 int c = getc(stream); | |
| 787 while(c != EOF) { | |
| 788 if (in_white_space) { | |
| 789 if (in_comment) { | |
| 790 if (c == '\n') in_comment = false; | |
| 791 } else { | |
| 792 if (c == '#') in_comment = true; | |
| 793 else if (!isspace(c)) { | |
| 794 in_white_space = false; | |
| 795 token[pos++] = c; | |
| 796 } | |
| 797 } | |
| 798 } else { | |
| 799 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 800 // token ends at newline, or at unquoted whitespace | |
| 801 // this allows a way to include spaces in string-valued options | |
| 802 token[pos] = '\0'; | |
| 803 logOption(token); | |
| 804 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 805 build_jvm_flags(token); | |
| 806 pos = 0; | |
| 807 in_white_space = true; | |
| 808 in_quote = false; | |
| 809 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 810 in_quote = true; | |
| 811 quote_c = c; | |
| 812 } else if (in_quote && (c == quote_c)) { | |
| 813 in_quote = false; | |
| 814 } else { | |
| 815 token[pos++] = c; | |
| 816 } | |
| 817 } | |
| 818 c = getc(stream); | |
| 819 } | |
| 820 if (pos > 0) { | |
| 821 token[pos] = '\0'; | |
| 822 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 823 build_jvm_flags(token); | |
| 824 } | |
| 825 fclose(stream); | |
| 826 return result; | |
| 827 } | |
| 828 | |
| 829 //============================================================================================================= | |
| 830 // Parsing of properties (-D) | |
| 831 | |
| 832 const char* Arguments::get_property(const char* key) { | |
| 833 return PropertyList_get_value(system_properties(), key); | |
| 834 } | |
| 835 | |
| 836 bool Arguments::add_property(const char* prop) { | |
| 837 const char* eq = strchr(prop, '='); | |
| 838 char* key; | |
| 839 // ns must be static--its address may be stored in a SystemProperty object. | |
| 840 const static char ns[1] = {0}; | |
| 841 char* value = (char *)ns; | |
| 842 | |
| 843 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 844 key = AllocateHeap(key_len + 1, "add_property"); | |
| 845 strncpy(key, prop, key_len); | |
| 846 key[key_len] = '\0'; | |
| 847 | |
| 848 if (eq != NULL) { | |
| 849 size_t value_len = strlen(prop) - key_len - 1; | |
| 850 value = AllocateHeap(value_len + 1, "add_property"); | |
| 851 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 852 } | |
| 853 | |
| 854 if (strcmp(key, "java.compiler") == 0) { | |
| 855 process_java_compiler_argument(value); | |
| 856 FreeHeap(key); | |
| 857 if (eq != NULL) { | |
| 858 FreeHeap(value); | |
| 859 } | |
| 860 return true; | |
| 691 | 861 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 862 _java_command = value; |
| 863 | |
| 864 // don't add this property to the properties exposed to the java application | |
| 865 FreeHeap(key); | |
| 866 return true; | |
| 691 | 867 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 868 // launcher.pid property is private and is processed |
| 869 // in process_sun_java_launcher_properties(); | |
| 870 // the sun.java.launcher property is passed on to the java application | |
| 871 FreeHeap(key); | |
| 872 if (eq != NULL) { | |
| 873 FreeHeap(value); | |
| 874 } | |
| 875 return true; | |
| 691 | 876 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 877 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 878 // its value without going through the property list or making a Java call. | |
| 879 _java_vendor_url_bug = value; | |
| 691 | 880 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 881 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 882 return true; | |
| 0 | 883 } |
| 884 // Create new property and add at the end of the list | |
| 885 PropertyList_unique_add(&_system_properties, key, value); | |
| 886 return true; | |
| 887 } | |
| 888 | |
| 889 //=========================================================================================================== | |
| 890 // Setting int/mixed/comp mode flags | |
| 891 | |
| 892 void Arguments::set_mode_flags(Mode mode) { | |
| 893 // Set up default values for all flags. | |
| 894 // If you add a flag to any of the branches below, | |
| 895 // add a default value for it here. | |
| 896 set_java_compiler(false); | |
| 897 _mode = mode; | |
| 898 | |
| 899 // Ensure Agent_OnLoad has the correct initial values. | |
| 900 // This may not be the final mode; mode may change later in onload phase. | |
| 901 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
| 691 | 902 (char*)Abstract_VM_Version::vm_info_string(), false); |
| 0 | 903 |
| 904 UseInterpreter = true; | |
| 905 UseCompiler = true; | |
| 906 UseLoopCounter = true; | |
| 907 | |
| 908 // Default values may be platform/compiler dependent - | |
| 909 // use the saved values | |
| 910 ClipInlining = Arguments::_ClipInlining; | |
| 911 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 912 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 913 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 914 Tier2CompileThreshold = Arguments::_Tier2CompileThreshold; | |
| 915 | |
| 916 // Change from defaults based on mode | |
| 917 switch (mode) { | |
| 918 default: | |
| 919 ShouldNotReachHere(); | |
| 920 break; | |
| 921 case _int: | |
| 922 UseCompiler = false; | |
| 923 UseLoopCounter = false; | |
| 924 AlwaysCompileLoopMethods = false; | |
| 925 UseOnStackReplacement = false; | |
| 926 break; | |
| 927 case _mixed: | |
| 928 // same as default | |
| 929 break; | |
| 930 case _comp: | |
| 931 UseInterpreter = false; | |
| 932 BackgroundCompilation = false; | |
| 933 ClipInlining = false; | |
| 934 break; | |
| 935 } | |
| 936 } | |
| 937 | |
| 938 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 939 // incompatible command line options were chosen. | |
| 940 | |
| 941 static void no_shared_spaces() { | |
| 942 if (RequireSharedSpaces) { | |
| 943 jio_fprintf(defaultStream::error_stream(), | |
| 944 "Class data sharing is inconsistent with other specified options.\n"); | |
| 945 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 946 } else { | |
| 947 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 948 } | |
| 949 } | |
| 950 | |
| 951 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC | |
| 952 // if it's not explictly set or unset. If the user has chosen | |
| 953 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 954 // set it, unless this is a single cpu machine. | |
| 955 void Arguments::set_parnew_gc_flags() { | |
| 1064 | 956 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
|
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957 "control point invariant"); |
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958 assert(UseParNewGC, "Error"); |
| 0 | 959 |
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960 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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961 // complete. |
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962 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
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963 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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964 } |
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965 |
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966 if (ParallelGCThreads == 0) { |
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967 FLAG_SET_DEFAULT(ParallelGCThreads, |
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968 Abstract_VM_Version::parallel_worker_threads()); |
| 1064 | 969 if (ParallelGCThreads == 1) { |
| 0 | 970 FLAG_SET_DEFAULT(UseParNewGC, false); |
| 1064 | 971 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
| 0 | 972 } |
| 973 } | |
| 1064 | 974 if (UseParNewGC) { |
| 975 // CDS doesn't work with ParNew yet | |
| 0 | 976 no_shared_spaces(); |
| 977 | |
| 695 | 978 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
| 0 | 979 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
| 980 // we set them to 1024 and 1024. | |
| 981 // See CR 6362902. | |
| 982 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 983 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 984 } | |
| 985 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 986 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 987 } | |
| 988 | |
| 1064 | 989 // AlwaysTenure flag should make ParNew promote all at first collection. |
| 0 | 990 // See CR 6362902. |
| 991 if (AlwaysTenure) { | |
| 992 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 993 } | |
| 695 | 994 // When using compressed oops, we use local overflow stacks, |
| 995 // rather than using a global overflow list chained through | |
| 996 // the klass word of the object's pre-image. | |
| 997 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
| 998 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
| 999 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
| 1000 } | |
| 1001 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
| 1002 } | |
| 1003 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
| 0 | 1004 } |
| 1005 } | |
| 1006 | |
| 1007 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1008 // sparc/solaris for certain applications, but would gain from | |
| 1009 // further optimization and tuning efforts, and would almost | |
| 1010 // certainly gain from analysis of platform and environment. | |
| 1011 void Arguments::set_cms_and_parnew_gc_flags() { | |
| 1064 | 1012 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
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1013 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1014 |
| 0 | 1015 // If we are using CMS, we prefer to UseParNewGC, |
| 1016 // unless explicitly forbidden. | |
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1017 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1018 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1019 } |
| 1020 | |
| 1021 // Turn off AdaptiveSizePolicy by default for cms until it is | |
|
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1022 // complete. |
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1023 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
| 0 | 1024 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
| 1025 } | |
| 1026 | |
| 1027 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1028 // as needed. | |
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1029 if (UseParNewGC) { |
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1030 set_parnew_gc_flags(); |
| 0 | 1031 } |
| 1032 | |
| 1033 // Now make adjustments for CMS | |
| 1034 size_t young_gen_per_worker; | |
| 1035 intx new_ratio; | |
| 1036 size_t min_new_default; | |
| 1037 intx tenuring_default; | |
| 1038 if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0 | |
| 1039 if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) { | |
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1040 FLAG_SET_ERGO(intx, CMSYoungGenPerWorker, 4*M); |
| 0 | 1041 } |
| 1042 young_gen_per_worker = 4*M; | |
| 1043 new_ratio = (intx)15; | |
| 1044 min_new_default = 4*M; | |
| 1045 tenuring_default = (intx)0; | |
| 1046 } else { // new defaults: "new" as of 6.0 | |
| 1047 young_gen_per_worker = CMSYoungGenPerWorker; | |
| 1048 new_ratio = (intx)7; | |
| 1049 min_new_default = 16*M; | |
| 1050 tenuring_default = (intx)4; | |
| 1051 } | |
| 1052 | |
| 1053 // Preferred young gen size for "short" pauses | |
| 1054 const uintx parallel_gc_threads = | |
| 1055 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1056 const size_t preferred_max_new_size_unaligned = | |
| 1057 ScaleForWordSize(young_gen_per_worker * parallel_gc_threads); | |
| 1058 const size_t preferred_max_new_size = | |
| 1059 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); | |
| 1060 | |
| 1061 // Unless explicitly requested otherwise, size young gen | |
| 1062 // for "short" pauses ~ 4M*ParallelGCThreads | |
|
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1063 |
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1064 // If either MaxNewSize or NewRatio is set on the command line, |
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1065 // assume the user is trying to set the size of the young gen. |
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1066 |
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1067 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1068 |
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1069 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1070 // NewSize was set on the command line and it is larger than |
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1071 // preferred_max_new_size. |
| 0 | 1072 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
|
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1073 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1074 } else { |
|
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1075 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1076 } |
| 1064 | 1077 if (PrintGCDetails && Verbose) { |
|
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1078 // Too early to use gclog_or_tty |
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1079 tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
|
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1080 } |
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1081 |
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1082 // Unless explicitly requested otherwise, prefer a large |
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1083 // Old to Young gen size so as to shift the collection load |
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1084 // to the old generation concurrent collector |
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1085 |
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1086 // If this is only guarded by FLAG_IS_DEFAULT(NewRatio) |
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1087 // then NewSize and OldSize may be calculated. That would |
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1088 // generally lead to some differences with ParNewGC for which |
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1089 // there was no obvious reason. Also limit to the case where |
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1090 // MaxNewSize has not been set. |
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1091 |
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1092 FLAG_SET_ERGO(intx, NewRatio, MAX2(NewRatio, new_ratio)); |
| 0 | 1093 |
|
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1094 // Code along this path potentially sets NewSize and OldSize |
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1095 |
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1096 // Calculate the desired minimum size of the young gen but if |
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1097 // NewSize has been set on the command line, use it here since |
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1098 // it should be the final value. |
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1099 size_t min_new; |
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1100 if (FLAG_IS_DEFAULT(NewSize)) { |
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1101 min_new = align_size_up(ScaleForWordSize(min_new_default), |
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1102 os::vm_page_size()); |
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1103 } else { |
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1104 min_new = NewSize; |
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1105 } |
| 1064 | 1106 size_t prev_initial_size = InitialHeapSize; |
| 1107 if (prev_initial_size != 0 && prev_initial_size < min_new + OldSize) { | |
| 1108 FLAG_SET_ERGO(uintx, InitialHeapSize, min_new + OldSize); | |
| 0 | 1109 // Currently minimum size and the initial heap sizes are the same. |
| 1064 | 1110 set_min_heap_size(InitialHeapSize); |
| 0 | 1111 if (PrintGCDetails && Verbose) { |
| 1112 warning("Initial heap size increased to " SIZE_FORMAT " M from " | |
| 1113 SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", | |
| 1064 | 1114 InitialHeapSize/M, prev_initial_size/M); |
| 0 | 1115 } |
| 1116 } | |
|
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1117 |
| 0 | 1118 // MaxHeapSize is aligned down in collectorPolicy |
|
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1119 size_t max_heap = |
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1120 align_size_down(MaxHeapSize, |
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1121 CardTableRS::ct_max_alignment_constraint()); |
| 0 | 1122 |
| 1064 | 1123 if (PrintGCDetails && Verbose) { |
|
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1124 // Too early to use gclog_or_tty |
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1125 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1126 " initial_heap_size: " SIZE_FORMAT |
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1127 " max_heap: " SIZE_FORMAT, |
| 1064 | 1128 min_heap_size(), InitialHeapSize, max_heap); |
|
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1129 } |
| 0 | 1130 if (max_heap > min_new) { |
| 1131 // Unless explicitly requested otherwise, make young gen | |
| 1132 // at least min_new, and at most preferred_max_new_size. | |
| 1133 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
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1134 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1135 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
| 1064 | 1136 if (PrintGCDetails && Verbose) { |
|
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1137 // Too early to use gclog_or_tty |
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1138 tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); |
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1139 } |
| 0 | 1140 } |
| 1141 // Unless explicitly requested otherwise, size old gen | |
| 1142 // so that it's at least 3X of NewSize to begin with; | |
| 1143 // later NewRatio will decide how it grows; see above. | |
| 1144 if (FLAG_IS_DEFAULT(OldSize)) { | |
| 1145 if (max_heap > NewSize) { | |
| 1064 | 1146 FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); |
| 1147 if (PrintGCDetails && Verbose) { | |
|
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1148 // Too early to use gclog_or_tty |
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1149 tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); |
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1150 } |
| 0 | 1151 } |
| 1152 } | |
| 1153 } | |
| 1154 } | |
| 1155 // Unless explicitly requested otherwise, definitely | |
| 1156 // promote all objects surviving "tenuring_default" scavenges. | |
| 1157 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1158 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
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1159 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1160 } |
| 1161 // If we decided above (or user explicitly requested) | |
| 1162 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1163 // prefer minuscule survivor spaces so as not to waste | |
| 1164 // space for (non-existent) survivors | |
| 1165 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
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1166 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1167 } |
| 1168 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1169 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1170 // This is done in order to make ParNew+CMS configuration to work | |
| 1171 // with YoungPLABSize and OldPLABSize options. | |
| 1172 // See CR 6362902. | |
| 1173 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1174 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
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1175 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1176 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1177 // the value (either from the command line or ergonomics) of |
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1178 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1179 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
| 0 | 1180 } |
| 1181 else { | |
| 1182 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. | |
| 1183 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1184 // we'll let it to take precedence. | |
| 1185 jio_fprintf(defaultStream::error_stream(), | |
|
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1186 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1187 " options are specified for the CMS collector." |
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1188 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
| 0 | 1189 } |
| 1190 } | |
| 1191 } | |
| 1192 | |
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1193 inline uintx max_heap_for_compressed_oops() { |
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1194 LP64_ONLY(return oopDesc::OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); |
| 1064 | 1195 NOT_LP64(ShouldNotReachHere(); return 0); |
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1196 } |
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1197 |
| 0 | 1198 bool Arguments::should_auto_select_low_pause_collector() { |
| 1199 if (UseAutoGCSelectPolicy && | |
| 1200 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1201 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1202 if (PrintGCDetails) { | |
| 1203 // Cannot use gclog_or_tty yet. | |
| 1204 tty->print_cr("Automatic selection of the low pause collector" | |
| 1205 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1206 } | |
| 1207 return true; | |
| 1208 } | |
| 1209 return false; | |
| 1210 } | |
| 1211 | |
| 1212 void Arguments::set_ergonomics_flags() { | |
| 1213 // Parallel GC is not compatible with sharing. If one specifies | |
| 1064 | 1214 // that they want sharing explicitly, do not set ergonomics flags. |
| 0 | 1215 if (DumpSharedSpaces || ForceSharedSpaces) { |
| 1216 return; | |
| 1217 } | |
| 1218 | |
| 1219 if (os::is_server_class_machine() && !force_client_mode ) { | |
| 1220 // If no other collector is requested explicitly, | |
| 1221 // let the VM select the collector based on | |
| 1222 // machine class and automatic selection policy. | |
| 1223 if (!UseSerialGC && | |
| 1224 !UseConcMarkSweepGC && | |
|
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1225 !UseG1GC && |
| 0 | 1226 !UseParNewGC && |
| 1227 !DumpSharedSpaces && | |
| 1228 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1229 if (should_auto_select_low_pause_collector()) { | |
| 1230 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1231 } else { | |
| 1232 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1233 } | |
| 1234 no_shared_spaces(); | |
| 1235 } | |
| 1236 } | |
|
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1237 |
| 1010 | 1238 #ifndef ZERO |
|
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1239 #ifdef _LP64 |
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1240 // Check that UseCompressedOops can be set with the max heap size allocated |
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1241 // by ergonomics. |
| 187 | 1242 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 1060 | 1243 #ifndef COMPILER1 |
| 932 | 1244 if (FLAG_IS_DEFAULT(UseCompressedOops) && !UseG1GC) { |
| 1245 FLAG_SET_ERGO(bool, UseCompressedOops, true); | |
|
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1246 } |
| 1060 | 1247 #endif |
|
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1248 #ifdef _WIN64 |
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1249 if (UseLargePages && UseCompressedOops) { |
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1250 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1251 // mode, when large pages are specified on windows. |
|
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1252 // This flag could be switched ON if narrow oop base address is set to 0, |
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1253 // see code in Universe::initialize_heap(). |
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1254 Universe::set_narrow_oop_use_implicit_null_checks(false); |
|
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1255 } |
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1256 #endif // _WIN64 |
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1257 } else { |
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1258 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1259 warning("Max heap size too large for Compressed Oops"); |
|
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1260 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1261 } |
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1262 } |
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1263 // Also checks that certain machines are slower with compressed oops |
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1264 // in vm_version initialization code. |
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1265 #endif // _LP64 |
| 1010 | 1266 #endif // !ZERO |
| 0 | 1267 } |
| 1268 | |
| 1269 void Arguments::set_parallel_gc_flags() { | |
|
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1270 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 0 | 1271 // If parallel old was requested, automatically enable parallel scavenge. |
| 1272 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1273 FLAG_SET_DEFAULT(UseParallelGC, true); | |
| 1274 } | |
| 1275 | |
| 1276 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1277 // of the physical memory, up to a maximum of 1GB. | |
| 1278 if (UseParallelGC) { | |
|
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1279 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
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1280 Abstract_VM_Version::parallel_worker_threads()); |
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1281 |
| 0 | 1282 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1283 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1284 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1285 // See CR 6362902 for details. | |
| 1286 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1287 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1288 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1289 } | |
| 1290 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1291 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1292 } | |
| 1293 } | |
| 1294 | |
| 1295 if (UseParallelOldGC) { | |
| 1296 // Par compact uses lower default values since they are treated as | |
|
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1297 // minimums. These are different defaults because of the different |
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1298 // interpretation and are not ergonomically set. |
| 0 | 1299 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
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1300 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1301 } |
| 1302 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
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1303 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1304 } |
| 1305 } | |
| 1306 } | |
| 1307 } | |
| 1308 | |
|
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1309 void Arguments::set_g1_gc_flags() { |
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1310 assert(UseG1GC, "Error"); |
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1311 #ifdef COMPILER1 |
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1312 FastTLABRefill = false; |
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1313 #endif |
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1314 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1315 Abstract_VM_Version::parallel_worker_threads()); |
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1316 if (ParallelGCThreads == 0) { |
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1317 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1318 Abstract_VM_Version::parallel_worker_threads()); |
|
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1319 } |
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1320 no_shared_spaces(); |
| 751 | 1321 |
| 1322 // Set the maximum pause time goal to be a reasonable default. | |
| 1323 if (FLAG_IS_DEFAULT(MaxGCPauseMillis)) { | |
| 1324 FLAG_SET_DEFAULT(MaxGCPauseMillis, 200); | |
| 1325 } | |
|
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1326 } |
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1327 |
| 1064 | 1328 void Arguments::set_heap_size() { |
| 1329 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
| 1330 // Deprecated flag | |
| 1331 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
| 1332 } | |
| 1333 | |
| 1334 const julong phys_mem = | |
| 1335 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
| 1336 : (julong)MaxRAM; | |
| 1337 | |
| 1338 // If the maximum heap size has not been set with -Xmx, | |
| 1339 // then set it as fraction of the size of physical memory, | |
| 1340 // respecting the maximum and minimum sizes of the heap. | |
|
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1341 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
| 1064 | 1342 julong reasonable_max = phys_mem / MaxRAMFraction; |
| 1343 | |
| 1344 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
| 1345 // Small physical memory, so use a minimum fraction of it for the heap | |
| 1346 reasonable_max = phys_mem / MinRAMFraction; | |
| 1347 } else { | |
| 1348 // Not-small physical memory, so require a heap at least | |
| 1349 // as large as MaxHeapSize | |
| 1350 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
| 1351 } | |
| 1352 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
| 1353 // Limit the heap size to ErgoHeapSizeLimit | |
| 1354 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
|
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1355 } |
| 1064 | 1356 if (UseCompressedOops) { |
| 1357 // Limit the heap size to the maximum possible when using compressed oops | |
| 1358 reasonable_max = MIN2(reasonable_max, (julong)max_heap_for_compressed_oops()); | |
| 1359 } | |
| 1360 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
| 1361 | |
| 1362 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
| 1363 // An initial heap size was specified on the command line, | |
| 1364 // so be sure that the maximum size is consistent. Done | |
| 1365 // after call to allocatable_physical_memory because that | |
| 1366 // method might reduce the allocation size. | |
| 1367 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
| 1368 } | |
| 1369 | |
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1370 if (PrintGCDetails && Verbose) { |
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1371 // Cannot use gclog_or_tty yet. |
| 1064 | 1372 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
|
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1373 } |
| 1064 | 1374 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
| 1375 } | |
| 1376 | |
| 1377 // If the initial_heap_size has not been set with InitialHeapSize | |
| 1378 // or -Xms, then set it as fraction of the size of physical memory, | |
| 1379 // respecting the maximum and minimum sizes of the heap. | |
| 1380 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
|
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1381 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1382 |
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1383 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1384 |
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1385 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1386 |
| 1064 | 1387 julong reasonable_initial = phys_mem / InitialRAMFraction; |
| 1388 | |
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1389 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
| 1064 | 1390 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
| 1391 | |
| 1392 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
| 1393 | |
| 1394 if (PrintGCDetails && Verbose) { | |
| 1395 // Cannot use gclog_or_tty yet. | |
| 1396 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
|
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1397 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
|
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1398 } |
| 1064 | 1399 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
|
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1400 set_min_heap_size((uintx)reasonable_minimum); |
|
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1401 } |
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1402 } |
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1403 |
| 0 | 1404 // This must be called after ergonomics because we want bytecode rewriting |
| 1405 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1406 void Arguments::set_bytecode_flags() { | |
| 1407 // Better not attempt to store into a read-only space. | |
| 1408 if (UseSharedSpaces) { | |
| 1409 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1410 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1411 } | |
| 1412 | |
| 1413 if (!RewriteBytecodes) { | |
| 1414 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1415 } | |
| 1416 } | |
| 1417 | |
| 1418 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1419 void Arguments::set_aggressive_opts_flags() { | |
|
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|
1420 #ifdef COMPILER2 |
|
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|
1421 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
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1422 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
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|
1423 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
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|
1424 } |
|
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1425 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
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|
1426 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
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|
1427 } |
|
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|
1428 |
|
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|
1429 // Feed the cache size setting into the JDK |
|
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|
1430 char buffer[1024]; |
|
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|
1431 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
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|
1432 add_property(buffer); |
|
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|
1433 } |
| 65 | 1434 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
| 1435 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
| 1436 } | |
|
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1437 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
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1438 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
|
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1439 } |
|
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|
1440 #endif |
|
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|
1441 |
| 0 | 1442 if (AggressiveOpts) { |
| 61 | 1443 // Sample flag setting code |
| 1444 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1445 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1446 // } | |
| 0 | 1447 } |
| 1448 } | |
| 1449 | |
| 1450 //=========================================================================================================== | |
| 1451 // Parsing of java.compiler property | |
| 1452 | |
| 1453 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1454 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1455 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1456 // is also specified. | |
| 1457 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1458 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1459 } | |
| 1460 } | |
| 1461 | |
| 1462 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1463 _sun_java_launcher = strdup(launcher); | |
| 1464 } | |
| 1465 | |
| 1466 bool Arguments::created_by_java_launcher() { | |
| 1467 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1468 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1469 } | |
| 1470 | |
| 1471 //=========================================================================================================== | |
| 1472 // Parsing of main arguments | |
| 1473 | |
| 1474 bool Arguments::verify_percentage(uintx value, const char* name) { | |
| 1475 if (value <= 100) { | |
| 1476 return true; | |
| 1477 } | |
| 1478 jio_fprintf(defaultStream::error_stream(), | |
| 1479 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1480 name, value); | |
| 1481 return false; | |
| 1482 } | |
| 1483 | |
| 1064 | 1484 static void force_serial_gc() { |
| 0 | 1485 FLAG_SET_DEFAULT(UseSerialGC, true); |
| 1486 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1487 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
|
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1488 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
| 0 | 1489 FLAG_SET_DEFAULT(UseParallelGC, false); |
| 1490 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
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1491 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1492 } |
| 1493 | |
| 1494 static bool verify_serial_gc_flags() { | |
| 1495 return (UseSerialGC && | |
|
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1496 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
|
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1497 UseParallelGC || UseParallelOldGC)); |
| 0 | 1498 } |
| 1499 | |
|
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1500 // Check consistency of GC selection |
|
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|
1501 bool Arguments::check_gc_consistency() { |
|
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|
1502 bool status = true; |
|
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|
1503 // Ensure that the user has not selected conflicting sets |
|
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1504 // of collectors. [Note: this check is merely a user convenience; |
|
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1505 // collectors over-ride each other so that only a non-conflicting |
|
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1506 // set is selected; however what the user gets is not what they |
|
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1507 // may have expected from the combination they asked for. It's |
|
28372612af5e
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|
1508 // better to reduce user confusion by not allowing them to |
|
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|
1509 // select conflicting combinations. |
|
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|
1510 uint i = 0; |
|
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|
1511 if (UseSerialGC) i++; |
|
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|
1512 if (UseConcMarkSweepGC || UseParNewGC) i++; |
|
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|
1513 if (UseParallelGC || UseParallelOldGC) i++; |
|
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1514 if (UseG1GC) i++; |
|
10
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|
1515 if (i > 1) { |
|
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|
1516 jio_fprintf(defaultStream::error_stream(), |
|
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|
1517 "Conflicting collector combinations in option list; " |
|
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|
1518 "please refer to the release notes for the combinations " |
|
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|
1519 "allowed\n"); |
|
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1520 status = false; |
|
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|
1521 } |
|
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|
1522 |
|
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|
1523 return status; |
|
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|
1524 } |
|
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|
1525 |
| 0 | 1526 // Check the consistency of vm_init_args |
| 1527 bool Arguments::check_vm_args_consistency() { | |
| 1528 // Method for adding checks for flag consistency. | |
| 1529 // The intent is to warn the user of all possible conflicts, | |
| 1530 // before returning an error. | |
| 1531 // Note: Needs platform-dependent factoring. | |
| 1532 bool status = true; | |
| 1533 | |
| 1534 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1535 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1536 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1537 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1538 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1539 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1540 extern void VM_Version_init(); | |
| 1541 VM_Version_init(); | |
| 1542 if (!VM_Version::has_v9()) { | |
| 1543 jio_fprintf(defaultStream::error_stream(), | |
| 1544 "V8 Machine detected, Server requires V9\n"); | |
| 1545 status = false; | |
| 1546 } | |
| 1547 #endif /* COMPILER2 && SPARC */ | |
| 1548 | |
| 1549 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1550 // builds so the cost of stack banging can be measured. | |
| 1551 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1552 if (!UseBoundThreads && !UseStackBanging) { | |
| 1553 jio_fprintf(defaultStream::error_stream(), | |
| 1554 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1555 | |
| 1556 status = false; | |
| 1557 } | |
| 1558 #endif | |
| 1559 | |
| 1560 if (TLABRefillWasteFraction == 0) { | |
| 1561 jio_fprintf(defaultStream::error_stream(), | |
| 1562 "TLABRefillWasteFraction should be a denominator, " | |
| 1563 "not " SIZE_FORMAT "\n", | |
| 1564 TLABRefillWasteFraction); | |
| 1565 status = false; | |
| 1566 } | |
| 1567 | |
|
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|
1568 status = status && verify_percentage(MaxLiveObjectEvacuationRatio, |
| 0 | 1569 "MaxLiveObjectEvacuationRatio"); |
|
10
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|
1570 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1571 "AdaptiveSizePolicyWeight"); |
|
10
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|
1572 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
|
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|
1573 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
|
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|
1574 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
|
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|
1575 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1576 |
| 1577 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1578 jio_fprintf(defaultStream::error_stream(), | |
| 1579 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1580 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1581 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1582 status = false; | |
| 1583 } | |
| 1584 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1585 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1586 | |
| 1587 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1588 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1589 } | |
| 1590 | |
|
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|
1591 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
|
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|
1592 // Settings to encourage splitting. |
|
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|
1593 if (!FLAG_IS_CMDLINE(NewRatio)) { |
|
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|
1594 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
|
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|
1595 } |
|
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|
1596 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
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|
1597 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
|
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|
1598 } |
|
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|
1599 } |
|
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|
1600 |
|
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1601 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
|
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1602 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1603 if (GCTimeLimit == 100) { |
| 1604 // Turn off gc-overhead-limit-exceeded checks | |
| 1605 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1606 } | |
| 1607 | |
|
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1608 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1609 |
| 1610 // Check user specified sharing option conflict with Parallel GC | |
|
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1611 bool cannot_share = ((UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || UseParNewGC || |
|
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1612 UseParallelGC || UseParallelOldGC || |
| 0 | 1613 SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages)); |
| 1614 | |
| 1615 if (cannot_share) { | |
| 1616 // Either force sharing on by forcing the other options off, or | |
| 1617 // force sharing off. | |
| 1618 if (DumpSharedSpaces || ForceSharedSpaces) { | |
|
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1619 jio_fprintf(defaultStream::error_stream(), |
| 1064 | 1620 "Reverting to Serial GC because of %s\n", |
|
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|
1621 ForceSharedSpaces ? " -Xshare:on" : "-Xshare:dump"); |
| 1064 | 1622 force_serial_gc(); |
| 0 | 1623 FLAG_SET_DEFAULT(SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages), false); |
| 1624 } else { | |
| 1064 | 1625 if (UseSharedSpaces && Verbose) { |
|
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|
1626 jio_fprintf(defaultStream::error_stream(), |
|
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|
1627 "Turning off use of shared archive because of " |
| 1064 | 1628 "choice of garbage collector or large pages\n"); |
|
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|
1629 } |
| 0 | 1630 no_shared_spaces(); |
| 1631 } | |
| 1632 } | |
| 1633 | |
|
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|
1634 status = status && check_gc_consistency(); |
| 0 | 1635 |
| 1636 if (_has_alloc_profile) { | |
| 1637 if (UseParallelGC || UseParallelOldGC) { | |
| 1638 jio_fprintf(defaultStream::error_stream(), | |
| 1639 "error: invalid argument combination.\n" | |
| 1640 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1641 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1642 status = false; | |
| 1643 } | |
| 1644 if (UseConcMarkSweepGC) { | |
| 1645 jio_fprintf(defaultStream::error_stream(), | |
| 1646 "error: invalid argument combination.\n" | |
| 1647 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1648 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1649 status = false; | |
| 1650 } | |
| 1651 } | |
| 1652 | |
| 1653 if (CMSIncrementalMode) { | |
| 1654 if (!UseConcMarkSweepGC) { | |
| 1655 jio_fprintf(defaultStream::error_stream(), | |
| 1656 "error: invalid argument combination.\n" | |
| 1657 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1658 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1659 status = false; | |
| 1660 } else { | |
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1661 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1662 "CMSIncrementalDutyCycle"); |
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1663 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1664 "CMSIncrementalDutyCycleMin"); |
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1665 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1666 "CMSIncrementalSafetyFactor"); |
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1667 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1668 "CMSIncrementalOffset"); |
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1669 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1670 "CMSExpAvgFactor"); |
| 1671 // If it was not set on the command line, set | |
| 1672 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1673 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1674 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1675 } | |
| 1676 } | |
| 1677 } | |
| 1678 | |
| 1679 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1680 // insists that we hold the requisite locks so that the iteration is | |
| 1681 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1682 // yet have a good way of acquiring and releasing these locks, | |
| 1683 // which are not visible at the CollectedHeap level. We want to | |
| 1684 // be able to acquire these locks and then do the iteration rather | |
| 1685 // than just disable the lock verification. This will be fixed under | |
| 1686 // bug 4788986. | |
| 1687 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1688 if (VerifyGCStartAt == 0) { | |
| 1689 warning("Heap verification at start-up disabled " | |
| 1690 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1691 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1692 } | |
| 1693 if (VerifyBeforeExit) { | |
| 1694 warning("Heap verification at shutdown disabled " | |
| 1695 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1696 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1697 } | |
| 1698 } | |
| 1699 | |
| 1700 // Note: only executed in non-PRODUCT mode | |
| 1701 if (!UseAsyncConcMarkSweepGC && | |
| 1702 (ExplicitGCInvokesConcurrent || | |
| 1703 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1704 jio_fprintf(defaultStream::error_stream(), | |
| 1705 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1706 " with -UseAsyncConcMarkSweepGC"); | |
| 1707 status = false; | |
| 1708 } | |
| 1709 | |
| 1710 return status; | |
| 1711 } | |
| 1712 | |
| 1713 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1714 const char* option_type) { | |
| 1715 if (ignore) return false; | |
| 1716 | |
| 1717 const char* spacer = " "; | |
| 1718 if (option_type == NULL) { | |
| 1719 option_type = ++spacer; // Set both to the empty string. | |
| 1720 } | |
| 1721 | |
| 1722 if (os::obsolete_option(option)) { | |
| 1723 jio_fprintf(defaultStream::error_stream(), | |
| 1724 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1725 option->optionString); | |
| 1726 return false; | |
| 1727 } else { | |
| 1728 jio_fprintf(defaultStream::error_stream(), | |
| 1729 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 1730 option->optionString); | |
| 1731 return true; | |
| 1732 } | |
| 1733 } | |
| 1734 | |
| 1735 static const char* user_assertion_options[] = { | |
| 1736 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 1737 }; | |
| 1738 | |
| 1739 static const char* system_assertion_options[] = { | |
| 1740 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 1741 }; | |
| 1742 | |
| 1743 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 1744 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 1745 // the option must match exactly. | |
| 1746 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 1747 bool tail_allowed) { | |
| 1748 for (/* empty */; *names != NULL; ++names) { | |
| 1749 if (match_option(option, *names, tail)) { | |
| 1750 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 1751 return true; | |
| 1752 } | |
| 1753 } | |
| 1754 } | |
| 1755 return false; | |
| 1756 } | |
| 1757 | |
| 1758 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, | |
|
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1759 julong* long_arg, |
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1760 julong min_size) { |
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1761 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 1762 return check_memory_size(*long_arg, min_size); |
| 1763 } | |
| 1764 | |
| 1765 // Parse JavaVMInitArgs structure | |
| 1766 | |
| 1767 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 1768 // For components of the system classpath. | |
| 1769 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 1770 bool scp_assembly_required = false; | |
| 1771 | |
| 1772 // Save default settings for some mode flags | |
| 1773 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 1774 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 1775 Arguments::_ClipInlining = ClipInlining; | |
| 1776 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 1777 Arguments::_Tier2CompileThreshold = Tier2CompileThreshold; | |
| 1778 | |
| 1779 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
| 1780 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 1781 if (result != JNI_OK) { | |
| 1782 return result; | |
| 1783 } | |
| 1784 | |
| 1785 // Parse JavaVMInitArgs structure passed in | |
| 1786 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 1787 if (result != JNI_OK) { | |
| 1788 return result; | |
| 1789 } | |
| 1790 | |
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1791 if (AggressiveOpts) { |
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1792 // Insert alt-rt.jar between user-specified bootclasspath |
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1793 // prefix and the default bootclasspath. os::set_boot_path() |
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1794 // uses meta_index_dir as the default bootclasspath directory. |
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1795 const char* altclasses_jar = "alt-rt.jar"; |
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1796 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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1797 strlen(altclasses_jar); |
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1798 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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1799 strcpy(altclasses_path, get_meta_index_dir()); |
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1800 strcat(altclasses_path, altclasses_jar); |
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1801 scp.add_suffix_to_prefix(altclasses_path); |
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1802 scp_assembly_required = true; |
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1803 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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1804 } |
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1805 |
| 0 | 1806 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 1807 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 1808 if (result != JNI_OK) { | |
| 1809 return result; | |
| 1810 } | |
| 1811 | |
| 1812 // Do final processing now that all arguments have been parsed | |
| 1813 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 1814 if (result != JNI_OK) { | |
| 1815 return result; | |
| 1816 } | |
| 1817 | |
| 1818 return JNI_OK; | |
| 1819 } | |
| 1820 | |
| 1821 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 1822 SysClassPath* scp_p, | |
| 1823 bool* scp_assembly_required_p, | |
| 1824 FlagValueOrigin origin) { | |
| 1825 // Remaining part of option string | |
| 1826 const char* tail; | |
| 1827 | |
| 1828 // iterate over arguments | |
| 1829 for (int index = 0; index < args->nOptions; index++) { | |
| 1830 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 1831 | |
| 1832 const JavaVMOption* option = args->options + index; | |
| 1833 | |
| 1834 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 1835 !match_option(option, "-Dsun.java.command", &tail) && | |
| 1836 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 1837 | |
| 1838 // add all jvm options to the jvm_args string. This string | |
| 1839 // is used later to set the java.vm.args PerfData string constant. | |
| 1840 // the -Djava.class.path and the -Dsun.java.command options are | |
| 1841 // omitted from jvm_args string as each have their own PerfData | |
| 1842 // string constant object. | |
| 1843 build_jvm_args(option->optionString); | |
| 1844 } | |
| 1845 | |
| 1846 // -verbose:[class/gc/jni] | |
| 1847 if (match_option(option, "-verbose", &tail)) { | |
| 1848 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 1849 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 1850 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 1851 } else if (!strcmp(tail, ":gc")) { | |
| 1852 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 1853 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 1854 } else if (!strcmp(tail, ":jni")) { | |
| 1855 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 1856 } | |
| 1857 // -da / -ea / -disableassertions / -enableassertions | |
| 1858 // These accept an optional class/package name separated by a colon, e.g., | |
| 1859 // -da:java.lang.Thread. | |
| 1860 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 1861 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 1862 if (*tail == '\0') { | |
| 1863 JavaAssertions::setUserClassDefault(enable); | |
| 1864 } else { | |
| 1865 assert(*tail == ':', "bogus match by match_option()"); | |
| 1866 JavaAssertions::addOption(tail + 1, enable); | |
| 1867 } | |
| 1868 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 1869 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 1870 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 1871 JavaAssertions::setSystemClassDefault(enable); | |
| 1872 // -bootclasspath: | |
| 1873 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 1874 scp_p->reset_path(tail); | |
| 1875 *scp_assembly_required_p = true; | |
| 1876 // -bootclasspath/a: | |
| 1877 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 1878 scp_p->add_suffix(tail); | |
| 1879 *scp_assembly_required_p = true; | |
| 1880 // -bootclasspath/p: | |
| 1881 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 1882 scp_p->add_prefix(tail); | |
| 1883 *scp_assembly_required_p = true; | |
| 1884 // -Xrun | |
| 1885 } else if (match_option(option, "-Xrun", &tail)) { | |
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1886 if (tail != NULL) { |
| 0 | 1887 const char* pos = strchr(tail, ':'); |
| 1888 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 1889 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 1890 name[len] = '\0'; | |
| 1891 | |
| 1892 char *options = NULL; | |
| 1893 if(pos != NULL) { | |
| 1894 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 1895 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 1896 } | |
| 1897 #ifdef JVMTI_KERNEL | |
| 1898 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 1899 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 1900 } else | |
| 1901 #endif // JVMTI_KERNEL | |
| 1902 add_init_library(name, options); | |
| 1903 } | |
| 1904 // -agentlib and -agentpath | |
| 1905 } else if (match_option(option, "-agentlib:", &tail) || | |
| 1906 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 1907 if(tail != NULL) { | |
| 1908 const char* pos = strchr(tail, '='); | |
| 1909 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 1910 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 1911 name[len] = '\0'; | |
| 1912 | |
| 1913 char *options = NULL; | |
| 1914 if(pos != NULL) { | |
| 1915 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 1916 } | |
| 1917 #ifdef JVMTI_KERNEL | |
| 1918 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 1919 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 1920 } else | |
| 1921 #endif // JVMTI_KERNEL | |
| 1922 add_init_agent(name, options, is_absolute_path); | |
| 1923 | |
| 1924 } | |
| 1925 // -javaagent | |
| 1926 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 1927 if(tail != NULL) { | |
| 1928 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 1929 add_init_agent("instrument", options, false); | |
| 1930 } | |
| 1931 // -Xnoclassgc | |
| 1932 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 1933 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 1934 // -Xincgc: i-CMS | |
| 1935 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 1936 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 1937 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 1938 // -Xnoincgc: no i-CMS | |
| 1939 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 1940 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 1941 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 1942 // -Xconcgc | |
| 1943 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 1944 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 1945 // -Xnoconcgc | |
| 1946 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 1947 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 1948 // -Xbatch | |
| 1949 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 1950 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 1951 // -Xmn for compatibility with other JVM vendors | |
| 1952 } else if (match_option(option, "-Xmn", &tail)) { | |
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1953 julong long_initial_eden_size = 0; |
| 0 | 1954 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 1955 if (errcode != arg_in_range) { | |
| 1956 jio_fprintf(defaultStream::error_stream(), | |
| 1957 "Invalid initial eden size: %s\n", option->optionString); | |
| 1958 describe_range_error(errcode); | |
| 1959 return JNI_EINVAL; | |
| 1960 } | |
| 1064 | 1961 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
| 1962 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
| 0 | 1963 // -Xms |
| 1964 } else if (match_option(option, "-Xms", &tail)) { | |
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1965 julong long_initial_heap_size = 0; |
| 0 | 1966 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 1967 if (errcode != arg_in_range) { | |
| 1968 jio_fprintf(defaultStream::error_stream(), | |
| 1969 "Invalid initial heap size: %s\n", option->optionString); | |
| 1970 describe_range_error(errcode); | |
| 1971 return JNI_EINVAL; | |
| 1972 } | |
| 1064 | 1973 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
| 0 | 1974 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 1975 set_min_heap_size(InitialHeapSize); |
| 0 | 1976 // -Xmx |
| 1977 } else if (match_option(option, "-Xmx", &tail)) { | |
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1978 julong long_max_heap_size = 0; |
| 0 | 1979 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 1980 if (errcode != arg_in_range) { | |
| 1981 jio_fprintf(defaultStream::error_stream(), | |
| 1982 "Invalid maximum heap size: %s\n", option->optionString); | |
| 1983 describe_range_error(errcode); | |
| 1984 return JNI_EINVAL; | |
| 1985 } | |
| 1064 | 1986 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
| 0 | 1987 // Xmaxf |
| 1988 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 1989 int maxf = (int)(atof(tail) * 100); | |
| 1990 if (maxf < 0 || maxf > 100) { | |
| 1991 jio_fprintf(defaultStream::error_stream(), | |
| 1992 "Bad max heap free percentage size: %s\n", | |
| 1993 option->optionString); | |
| 1994 return JNI_EINVAL; | |
| 1995 } else { | |
| 1996 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 1997 } | |
| 1998 // Xminf | |
| 1999 } else if (match_option(option, "-Xminf", &tail)) { | |
| 2000 int minf = (int)(atof(tail) * 100); | |
| 2001 if (minf < 0 || minf > 100) { | |
| 2002 jio_fprintf(defaultStream::error_stream(), | |
| 2003 "Bad min heap free percentage size: %s\n", | |
| 2004 option->optionString); | |
| 2005 return JNI_EINVAL; | |
| 2006 } else { | |
| 2007 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 2008 } | |
| 2009 // -Xss | |
| 2010 } else if (match_option(option, "-Xss", &tail)) { | |
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2011 julong long_ThreadStackSize = 0; |
| 0 | 2012 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 2013 if (errcode != arg_in_range) { | |
| 2014 jio_fprintf(defaultStream::error_stream(), | |
| 2015 "Invalid thread stack size: %s\n", option->optionString); | |
| 2016 describe_range_error(errcode); | |
| 2017 return JNI_EINVAL; | |
| 2018 } | |
| 2019 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 2020 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 2021 round_to((int)long_ThreadStackSize, K) / K); | |
| 2022 // -Xoss | |
| 2023 } else if (match_option(option, "-Xoss", &tail)) { | |
| 2024 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 2025 // -Xmaxjitcodesize | |
| 2026 } else if (match_option(option, "-Xmaxjitcodesize", &tail)) { | |
|
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2027 julong long_ReservedCodeCacheSize = 0; |
| 0 | 2028 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
|
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2029 (size_t)InitialCodeCacheSize); |
| 0 | 2030 if (errcode != arg_in_range) { |
| 2031 jio_fprintf(defaultStream::error_stream(), | |
| 2032 "Invalid maximum code cache size: %s\n", | |
| 2033 option->optionString); | |
| 2034 describe_range_error(errcode); | |
| 2035 return JNI_EINVAL; | |
| 2036 } | |
| 2037 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 2038 // -green | |
| 2039 } else if (match_option(option, "-green", &tail)) { | |
| 2040 jio_fprintf(defaultStream::error_stream(), | |
| 2041 "Green threads support not available\n"); | |
| 2042 return JNI_EINVAL; | |
| 2043 // -native | |
| 2044 } else if (match_option(option, "-native", &tail)) { | |
| 2045 // HotSpot always uses native threads, ignore silently for compatibility | |
| 2046 // -Xsqnopause | |
| 2047 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 2048 // EVM option, ignore silently for compatibility | |
| 2049 // -Xrs | |
| 2050 } else if (match_option(option, "-Xrs", &tail)) { | |
| 2051 // Classic/EVM option, new functionality | |
| 2052 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 2053 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 2054 // change default internal VM signals used - lower case for back compat | |
| 2055 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 2056 // -Xoptimize | |
| 2057 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 2058 // EVM option, ignore silently for compatibility | |
| 2059 // -Xprof | |
| 2060 } else if (match_option(option, "-Xprof", &tail)) { | |
| 2061 #ifndef FPROF_KERNEL | |
| 2062 _has_profile = true; | |
| 2063 #else // FPROF_KERNEL | |
| 2064 // do we have to exit? | |
| 2065 warning("Kernel VM does not support flat profiling."); | |
| 2066 #endif // FPROF_KERNEL | |
| 2067 // -Xaprof | |
| 2068 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2069 _has_alloc_profile = true; | |
| 2070 // -Xconcurrentio | |
| 2071 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2072 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2073 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2074 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2075 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2076 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2077 | |
| 2078 // -Xinternalversion | |
| 2079 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2080 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2081 VM_Version::internal_vm_info_string()); | |
| 2082 vm_exit(0); | |
| 2083 #ifndef PRODUCT | |
| 2084 // -Xprintflags | |
| 2085 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 2086 CommandLineFlags::printFlags(); | |
| 2087 vm_exit(0); | |
| 2088 #endif | |
| 2089 // -D | |
| 2090 } else if (match_option(option, "-D", &tail)) { | |
| 2091 if (!add_property(tail)) { | |
| 2092 return JNI_ENOMEM; | |
| 2093 } | |
| 2094 // Out of the box management support | |
| 2095 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2096 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2097 } | |
| 2098 // -Xint | |
| 2099 } else if (match_option(option, "-Xint", &tail)) { | |
| 2100 set_mode_flags(_int); | |
| 2101 // -Xmixed | |
| 2102 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2103 set_mode_flags(_mixed); | |
| 2104 // -Xcomp | |
| 2105 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2106 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2107 set_mode_flags(_comp); | |
| 2108 | |
| 2109 // -Xshare:dump | |
| 2110 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2111 #ifdef TIERED | |
| 2112 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2113 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2114 #elif defined(COMPILER2) | |
| 2115 vm_exit_during_initialization( | |
| 2116 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2117 #elif defined(KERNEL) | |
| 2118 vm_exit_during_initialization( | |
| 2119 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2120 #else | |
| 2121 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2122 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2123 #endif | |
| 2124 // -Xshare:on | |
| 2125 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2126 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2127 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2128 #ifdef TIERED | |
| 2129 FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true); | |
| 2130 #endif // TIERED | |
| 2131 // -Xshare:auto | |
| 2132 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2133 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2134 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2135 // -Xshare:off | |
| 2136 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2137 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2138 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2139 | |
| 2140 // -Xverify | |
| 2141 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2142 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2143 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2144 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2145 } else if (strcmp(tail, ":remote") == 0) { | |
| 2146 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2147 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2148 } else if (strcmp(tail, ":none") == 0) { | |
| 2149 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2150 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2151 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2152 return JNI_EINVAL; | |
| 2153 } | |
| 2154 // -Xdebug | |
| 2155 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2156 // note this flag has been used, then ignore | |
| 2157 set_xdebug_mode(true); | |
| 2158 // -Xnoagent | |
| 2159 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2160 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2161 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2162 // Bind user level threads to kernel threads (Solaris only) | |
| 2163 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2164 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2165 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2166 // ostream_init_log(), when called will use this filename | |
| 2167 // to initialize a fileStream. | |
| 2168 _gc_log_filename = strdup(tail); | |
| 2169 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2170 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2171 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2172 | |
| 2173 // JNI hooks | |
| 2174 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2175 if (!strcmp(tail, ":jni")) { | |
| 2176 CheckJNICalls = true; | |
| 2177 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2178 "check")) { | |
| 2179 return JNI_EINVAL; | |
| 2180 } | |
| 2181 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2182 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2183 } else if (match_option(option, "exit", &tail)) { | |
| 2184 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2185 } else if (match_option(option, "abort", &tail)) { | |
| 2186 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2187 // -XX:+AggressiveHeap | |
| 2188 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2189 | |
| 2190 // This option inspects the machine and attempts to set various | |
| 2191 // parameters to be optimal for long-running, memory allocation | |
| 2192 // intensive jobs. It is intended for machines with large | |
| 2193 // amounts of cpu and memory. | |
| 2194 | |
| 2195 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2196 // VM, but we may not be able to represent the total physical memory | |
| 2197 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2198 // Thus, we need to make sure we're using a julong for intermediate | |
| 2199 // calculations. | |
| 2200 julong initHeapSize; | |
| 2201 julong total_memory = os::physical_memory(); | |
| 2202 | |
| 2203 if (total_memory < (julong)256*M) { | |
| 2204 jio_fprintf(defaultStream::error_stream(), | |
| 2205 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2206 vm_exit(1); | |
| 2207 } | |
| 2208 | |
| 2209 // The heap size is half of available memory, or (at most) | |
| 2210 // all of possible memory less 160mb (leaving room for the OS | |
| 2211 // when using ISM). This is the maximum; because adaptive sizing | |
| 2212 // is turned on below, the actual space used may be smaller. | |
| 2213 | |
| 2214 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2215 total_memory - (julong)160*M); | |
| 2216 | |
| 2217 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2218 // process space. The 64bit VM version of this function is a nop. | |
| 2219 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2220 | |
| 2221 // The perm gen is separate but contiguous with the | |
| 2222 // object heap (and is reserved with it) so subtract it | |
| 2223 // from the heap size. | |
| 2224 if (initHeapSize > MaxPermSize) { | |
| 2225 initHeapSize = initHeapSize - MaxPermSize; | |
| 2226 } else { | |
| 2227 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2228 } | |
| 2229 | |
| 2230 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2231 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 1064 | 2232 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
| 0 | 2233 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2234 set_min_heap_size(initHeapSize); |
| 0 | 2235 } |
| 2236 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2237 // Make the young generation 3/8ths of the total heap. | |
| 2238 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2239 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2240 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2241 } | |
| 2242 | |
| 2243 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2244 | |
| 2245 // Increase some data structure sizes for efficiency | |
| 2246 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2247 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2248 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2249 | |
| 2250 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2251 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2252 // space per-gc-thread buffers. The default is 4kw. | |
| 2253 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2254 | |
| 2255 // OldPLABSize is the size of the buffers in the old gen that | |
| 2256 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2257 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2258 // The default size is 1kw. These buffers are rarely used, since the | |
| 2259 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2260 // are occasions when there's lots of live data in the young gen | |
| 2261 // and we end up promoting some of it. We don't have a definite | |
| 2262 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2263 // is that a bigger PLAB results in retaining something like the | |
| 2264 // original allocation order after promotion, which improves mutator | |
| 2265 // locality. A minor effect may be that larger PLABs reduce the | |
| 2266 // number of PLAB allocation events during gc. The value of 8kw | |
| 2267 // was arrived at by experimenting with specjbb. | |
| 2268 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2269 | |
| 2270 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
| 2271 // a more conservative which-method-do-I-compile policy when one | |
| 2272 // of the counters maintained by the interpreter trips. The | |
| 2273 // result is reduced startup time and improved specjbb and | |
| 2274 // alacrity performance. Zero is the default, but we set it | |
| 2275 // explicitly here in case the default changes. | |
| 2276 // See runtime/compilationPolicy.*. | |
| 2277 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
| 2278 | |
| 2279 // Enable parallel GC and adaptive generation sizing | |
| 2280 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
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2281 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2282 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2283 |
| 2284 // Encourage steady state memory management | |
| 2285 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2286 | |
| 2287 // This appears to improve mutator locality | |
| 2288 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2289 | |
| 2290 // Get around early Solaris scheduling bug | |
| 2291 // (affinity vs other jobs on system) | |
| 2292 // but disallow DR and offlining (5008695). | |
| 2293 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2294 | |
| 2295 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2296 // The last option must always win. | |
| 2297 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2298 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2299 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2300 // The last option must always win. | |
| 2301 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2302 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2303 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2304 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2305 jio_fprintf(defaultStream::error_stream(), | |
| 2306 "Please use CMSClassUnloadingEnabled in place of " | |
| 2307 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2308 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2309 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2310 jio_fprintf(defaultStream::error_stream(), | |
| 2311 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2312 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2313 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2314 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2315 jio_fprintf(defaultStream::error_stream(), | |
| 2316 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2317 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2318 // The TLE options are for compatibility with 1.3 and will be | |
| 2319 // removed without notice in a future release. These options | |
| 2320 // are not to be documented. | |
| 2321 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2322 // No longer used. | |
| 2323 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2324 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2325 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2326 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2327 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2328 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2329 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2330 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2331 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2332 // No longer used. | |
| 2333 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
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2334 julong long_tlab_size = 0; |
| 0 | 2335 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2336 if (errcode != arg_in_range) { | |
| 2337 jio_fprintf(defaultStream::error_stream(), | |
| 2338 "Invalid TLAB size: %s\n", option->optionString); | |
| 2339 describe_range_error(errcode); | |
| 2340 return JNI_EINVAL; | |
| 2341 } | |
| 2342 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2343 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2344 // No longer used. | |
| 2345 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2346 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2347 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2348 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2349 SOLARIS_ONLY( | |
| 2350 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2351 warning("-XX:+UsePermISM is obsolete."); | |
| 2352 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2353 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2354 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2355 ) | |
| 2356 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2357 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2358 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2359 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2360 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2361 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2362 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 2363 #ifdef SOLARIS | |
| 2364 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
| 2365 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2366 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2367 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 2368 #else // ndef SOLARIS | |
| 2369 jio_fprintf(defaultStream::error_stream(), | |
| 2370 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
| 2371 return JNI_EINVAL; | |
| 2372 #endif // ndef SOLARIS | |
| 2373 } else | |
| 2374 #ifdef ASSERT | |
| 2375 if (match_option(option, "-XX:+FullGCALot", &tail)) { | |
| 2376 FLAG_SET_CMDLINE(bool, FullGCALot, true); | |
| 2377 // disable scavenge before parallel mark-compact | |
| 2378 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2379 } else | |
| 2380 #endif | |
| 2381 if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { | |
| 2382 julong cms_blocks_to_claim = (julong)atol(tail); | |
| 2383 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2384 jio_fprintf(defaultStream::error_stream(), | |
| 2385 "Please use -XX:CMSParPromoteBlocksToClaim in place of " | |
| 2386 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); | |
| 2387 } else | |
| 2388 if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { | |
|
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2389 julong old_plab_size = 0; |
| 0 | 2390 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2391 if (errcode != arg_in_range) { | |
| 2392 jio_fprintf(defaultStream::error_stream(), | |
| 2393 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2394 describe_range_error(errcode); | |
| 2395 return JNI_EINVAL; | |
| 2396 } | |
|
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2397 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2398 jio_fprintf(defaultStream::error_stream(), |
| 2399 "Please use -XX:OldPLABSize in place of " | |
| 2400 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
| 2401 } else | |
| 2402 if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { | |
|
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2403 julong young_plab_size = 0; |
| 0 | 2404 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2405 if (errcode != arg_in_range) { | |
| 2406 jio_fprintf(defaultStream::error_stream(), | |
| 2407 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2408 describe_range_error(errcode); | |
| 2409 return JNI_EINVAL; | |
| 2410 } | |
|
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|
2411 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2412 jio_fprintf(defaultStream::error_stream(), |
| 2413 "Please use -XX:YoungPLABSize in place of " | |
| 2414 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 2415 } else | |
| 2416 if (match_option(option, "-XX:", &tail)) { // -XX:xxxx | |
| 2417 // Skip -XX:Flags= since that case has already been handled | |
| 2418 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2419 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2420 return JNI_EINVAL; | |
| 2421 } | |
| 2422 } | |
| 2423 // Unknown option | |
| 2424 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2425 return JNI_ERR; | |
| 2426 } | |
| 2427 } | |
|
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|
2428 // Change the default value for flags which have different default values |
|
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6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2429 // when working with older JDKs. |
|
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|
2430 if (JDK_Version::current().compare_major(6) <= 0 && |
|
171e581e8161
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diff
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|
2431 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
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|
2432 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
|
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|
2433 } |
| 0 | 2434 return JNI_OK; |
| 2435 } | |
| 2436 | |
| 2437 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2438 // This must be done after all -D arguments have been processed. | |
| 2439 scp_p->expand_endorsed(); | |
| 2440 | |
| 2441 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2442 // Assemble the bootclasspath elements into the final path. | |
| 2443 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2444 } | |
| 2445 | |
| 2446 // This must be done after all arguments have been processed. | |
| 2447 // java_compiler() true means set to "NONE" or empty. | |
| 2448 if (java_compiler() && !xdebug_mode()) { | |
| 2449 // For backwards compatibility, we switch to interpreted mode if | |
| 2450 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2451 // not specified. | |
| 2452 set_mode_flags(_int); | |
| 2453 } | |
| 2454 if (CompileThreshold == 0) { | |
| 2455 set_mode_flags(_int); | |
| 2456 } | |
| 2457 | |
| 2458 #ifdef TIERED | |
| 2459 // If we are using tiered compilation in the tiered vm then c1 will | |
| 2460 // do the profiling and we don't want to waste that time in the | |
| 2461 // interpreter. | |
| 2462 if (TieredCompilation) { | |
| 2463 ProfileInterpreter = false; | |
| 2464 } else { | |
| 2465 // Since we are running vanilla server we must adjust the compile threshold | |
| 2466 // unless the user has already adjusted it because the default threshold assumes | |
| 2467 // we will run tiered. | |
| 2468 | |
| 2469 if (FLAG_IS_DEFAULT(CompileThreshold)) { | |
| 2470 CompileThreshold = Tier2CompileThreshold; | |
| 2471 } | |
| 2472 } | |
| 2473 #endif // TIERED | |
| 2474 | |
| 2475 #ifndef COMPILER2 | |
| 2476 // Don't degrade server performance for footprint | |
| 2477 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2478 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2479 // No need for large granularity pages w/small heaps. | |
| 2480 // Note that large pages are enabled/disabled for both the | |
| 2481 // Java heap and the code cache. | |
| 2482 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2483 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2484 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2485 } | |
|
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|
2486 |
| 0 | 2487 #else |
| 2488 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2489 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2490 } | |
|
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|
2491 // Temporary disable bulk zeroing reduction with G1. See CR 6627983. |
|
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|
2492 if (UseG1GC) { |
|
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|
2493 FLAG_SET_DEFAULT(ReduceBulkZeroing, false); |
|
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|
2494 } |
| 0 | 2495 #endif |
| 2496 | |
| 2497 if (!check_vm_args_consistency()) { | |
| 2498 return JNI_ERR; | |
| 2499 } | |
| 2500 | |
| 2501 return JNI_OK; | |
| 2502 } | |
| 2503 | |
| 2504 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2505 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2506 scp_assembly_required_p); | |
| 2507 } | |
| 2508 | |
| 2509 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2510 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2511 scp_assembly_required_p); | |
| 2512 } | |
| 2513 | |
| 2514 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2515 const int N_MAX_OPTIONS = 64; | |
| 2516 const int OPTION_BUFFER_SIZE = 1024; | |
| 2517 char buffer[OPTION_BUFFER_SIZE]; | |
| 2518 | |
| 2519 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2520 // Don't check this variable if user has special privileges | |
| 2521 // (e.g. unix su command). | |
| 2522 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2523 !os::have_special_privileges()) { | |
| 2524 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2525 jio_fprintf(defaultStream::error_stream(), | |
| 2526 "Picked up %s: %s\n", name, buffer); | |
| 2527 char* rd = buffer; // pointer to the input string (rd) | |
| 2528 int i; | |
| 2529 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2530 while (isspace(*rd)) rd++; // skip whitespace | |
| 2531 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2532 | |
| 2533 // The output, option string, overwrites the input string. | |
| 2534 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2535 // input string (rd). | |
| 2536 char* wrt = rd; | |
| 2537 | |
| 2538 options[i++].optionString = wrt; // Fill in option | |
| 2539 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2540 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2541 int quote = *rd; // matching quote to look for | |
| 2542 rd++; // don't copy open quote | |
| 2543 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2544 if (*rd == 0) { // string termination means unmatched string | |
| 2545 jio_fprintf(defaultStream::error_stream(), | |
| 2546 "Unmatched quote in %s\n", name); | |
| 2547 return JNI_ERR; | |
| 2548 } | |
| 2549 *wrt++ = *rd++; // copy to option string | |
| 2550 } | |
| 2551 rd++; // don't copy close quote | |
| 2552 } else { | |
| 2553 *wrt++ = *rd++; // copy to option string | |
| 2554 } | |
| 2555 } | |
| 2556 // Need to check if we're done before writing a NULL, | |
| 2557 // because the write could be to the byte that rd is pointing to. | |
| 2558 if (*rd++ == 0) { | |
| 2559 *wrt = 0; | |
| 2560 break; | |
| 2561 } | |
| 2562 *wrt = 0; // Zero terminate option | |
| 2563 } | |
| 2564 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2565 JavaVMInitArgs vm_args; | |
| 2566 vm_args.version = JNI_VERSION_1_2; | |
| 2567 vm_args.options = options; | |
| 2568 vm_args.nOptions = i; | |
| 564 | 2569 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2570 |
| 2571 if (PrintVMOptions) { | |
| 2572 const char* tail; | |
| 2573 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2574 const JavaVMOption *option = vm_args.options + i; | |
| 2575 if (match_option(option, "-XX:", &tail)) { | |
| 2576 logOption(tail); | |
| 2577 } | |
| 2578 } | |
| 2579 } | |
| 2580 | |
| 2581 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2582 } | |
| 2583 return JNI_OK; | |
| 2584 } | |
| 2585 | |
| 2586 // Parse entry point called from JNI_CreateJavaVM | |
| 2587 | |
| 2588 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2589 | |
| 2590 // Sharing support | |
| 2591 // Construct the path to the archive | |
| 2592 char jvm_path[JVM_MAXPATHLEN]; | |
| 2593 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2594 #ifdef TIERED | |
| 2595 if (strstr(jvm_path, "client") != NULL) { | |
| 2596 force_client_mode = true; | |
| 2597 } | |
| 2598 #endif // TIERED | |
| 2599 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2600 if (end != NULL) *end = '\0'; | |
| 2601 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2602 strlen(os::file_separator()) + 20); | |
| 2603 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2604 strcpy(shared_archive_path, jvm_path); | |
| 2605 strcat(shared_archive_path, os::file_separator()); | |
| 2606 strcat(shared_archive_path, "classes"); | |
| 2607 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2608 strcat(shared_archive_path, ".jsa"); | |
| 2609 SharedArchivePath = shared_archive_path; | |
| 2610 | |
| 2611 // Remaining part of option string | |
| 2612 const char* tail; | |
| 2613 | |
| 2614 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2615 bool settings_file_specified = false; | |
| 564 | 2616 const char* flags_file; |
| 0 | 2617 int index; |
| 2618 for (index = 0; index < args->nOptions; index++) { | |
| 2619 const JavaVMOption *option = args->options + index; | |
| 2620 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2621 flags_file = tail; |
| 0 | 2622 settings_file_specified = true; |
| 2623 } | |
| 2624 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2625 PrintVMOptions = true; | |
| 2626 } | |
|
253
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6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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diff
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|
2627 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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diff
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|
2628 PrintVMOptions = false; |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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196
diff
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|
2629 } |
| 564 | 2630 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2631 IgnoreUnrecognizedVMOptions = true; | |
| 2632 } | |
| 2633 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2634 IgnoreUnrecognizedVMOptions = false; | |
| 2635 } | |
| 1150 | 2636 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
| 2637 CommandLineFlags::printFlags(); | |
| 2638 vm_exit(0); | |
| 2639 } | |
| 564 | 2640 } |
| 2641 | |
| 2642 if (IgnoreUnrecognizedVMOptions) { | |
| 2643 // uncast const to modify the flag args->ignoreUnrecognized | |
| 2644 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 2645 } | |
| 2646 | |
| 2647 // Parse specified settings file | |
| 2648 if (settings_file_specified) { | |
| 2649 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 2650 return JNI_EINVAL; | |
| 2651 } | |
| 0 | 2652 } |
| 2653 | |
| 2654 // Parse default .hotspotrc settings file | |
| 2655 if (!settings_file_specified) { | |
| 2656 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 2657 return JNI_EINVAL; | |
| 2658 } | |
| 2659 } | |
| 2660 | |
| 2661 if (PrintVMOptions) { | |
| 2662 for (index = 0; index < args->nOptions; index++) { | |
| 2663 const JavaVMOption *option = args->options + index; | |
| 2664 if (match_option(option, "-XX:", &tail)) { | |
| 2665 logOption(tail); | |
| 2666 } | |
| 2667 } | |
| 2668 } | |
| 2669 | |
| 2670 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 2671 jint result = parse_vm_init_args(args); | |
| 2672 if (result != JNI_OK) { | |
| 2673 return result; | |
| 2674 } | |
| 2675 | |
| 2676 #ifndef PRODUCT | |
| 2677 if (TraceBytecodesAt != 0) { | |
| 2678 TraceBytecodes = true; | |
| 2679 } | |
| 2680 if (CountCompiledCalls) { | |
| 2681 if (UseCounterDecay) { | |
| 2682 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 2683 UseCounterDecay = false; | |
| 2684 } | |
| 2685 } | |
| 2686 #endif // PRODUCT | |
| 2687 | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2688 if (EnableInvokeDynamic && !EnableMethodHandles) { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2689 if (!FLAG_IS_DEFAULT(EnableMethodHandles)) { |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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932
diff
changeset
|
2690 warning("forcing EnableMethodHandles true because EnableInvokeDynamic is true"); |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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712
diff
changeset
|
2691 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2692 EnableMethodHandles = true; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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712
diff
changeset
|
2693 } |
| 710 | 2694 if (EnableMethodHandles && !AnonymousClasses) { |
| 2695 if (!FLAG_IS_DEFAULT(AnonymousClasses)) { | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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932
diff
changeset
|
2696 warning("forcing AnonymousClasses true because EnableMethodHandles is true"); |
| 710 | 2697 } |
| 2698 AnonymousClasses = true; | |
| 2699 } | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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932
diff
changeset
|
2700 if ((EnableMethodHandles || AnonymousClasses) && ScavengeRootsInCode == 0) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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932
diff
changeset
|
2701 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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932
diff
changeset
|
2702 warning("forcing ScavengeRootsInCode non-zero because EnableMethodHandles or AnonymousClasses is true"); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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932
diff
changeset
|
2703 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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932
diff
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|
2704 ScavengeRootsInCode = 1; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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932
diff
changeset
|
2705 } |
|
1135
e66fd840cb6b
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diff
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|
2706 #ifdef COMPILER2 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1131
diff
changeset
|
2707 if (EnableInvokeDynamic && DoEscapeAnalysis) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1131
diff
changeset
|
2708 // TODO: We need to find rules for invokedynamic and EA. For now, |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
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1131
diff
changeset
|
2709 // simply disable EA by default. |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
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1131
diff
changeset
|
2710 if (FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1131
diff
changeset
|
2711 DoEscapeAnalysis = false; |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1131
diff
changeset
|
2712 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1131
diff
changeset
|
2713 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1131
diff
changeset
|
2714 #endif |
| 710 | 2715 |
| 0 | 2716 if (PrintGCDetails) { |
| 2717 // Turn on -verbose:gc options as well | |
| 2718 PrintGC = true; | |
| 2719 if (FLAG_IS_DEFAULT(TraceClassUnloading)) { | |
| 2720 TraceClassUnloading = true; | |
| 2721 } | |
| 2722 } | |
| 2723 | |
| 1060 | 2724 #if defined(_LP64) && defined(COMPILER1) |
| 2725 UseCompressedOops = false; | |
| 2726 #endif | |
| 2727 | |
| 0 | 2728 #ifdef SERIALGC |
| 1064 | 2729 force_serial_gc(); |
| 0 | 2730 #endif // SERIALGC |
| 2731 #ifdef KERNEL | |
| 2732 no_shared_spaces(); | |
| 2733 #endif // KERNEL | |
| 2734 | |
| 2735 // Set flags based on ergonomics. | |
| 2736 set_ergonomics_flags(); | |
| 2737 | |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1131
diff
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|
2738 #ifdef _LP64 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1131
diff
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|
2739 // XXX JSR 292 currently does not support compressed oops. |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
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1131
diff
changeset
|
2740 if (EnableMethodHandles && UseCompressedOops) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
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1131
diff
changeset
|
2741 if (FLAG_IS_DEFAULT(UseCompressedOops) || FLAG_IS_ERGO(UseCompressedOops)) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
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1131
diff
changeset
|
2742 UseCompressedOops = false; |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
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1131
diff
changeset
|
2743 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
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1131
diff
changeset
|
2744 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
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1131
diff
changeset
|
2745 #endif // _LP64 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
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1131
diff
changeset
|
2746 |
|
10
28372612af5e
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jmasa
parents:
0
diff
changeset
|
2747 // Check the GC selections again. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
2748 if (!check_gc_consistency()) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
2749 return JNI_EINVAL; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
2750 } |
|
28372612af5e
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2751 |
| 1064 | 2752 if (UseConcMarkSweepGC) { |
| 2753 // Set flags for CMS and ParNew. Check UseConcMarkSweep first | |
| 2754 // to ensure that when both UseConcMarkSweepGC and UseParNewGC | |
| 2755 // are true, we don't call set_parnew_gc_flags() as well. | |
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2756 set_cms_and_parnew_gc_flags(); |
| 1064 | 2757 } else { |
| 2758 // Set heap size based on available physical memory | |
| 2759 set_heap_size(); | |
| 2760 // Set per-collector flags | |
| 2761 if (UseParallelGC || UseParallelOldGC) { | |
| 2762 set_parallel_gc_flags(); | |
| 2763 } else if (UseParNewGC) { | |
| 2764 set_parnew_gc_flags(); | |
| 2765 } else if (UseG1GC) { | |
| 2766 set_g1_gc_flags(); | |
| 2767 } | |
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2768 } |
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2769 |
| 0 | 2770 #ifdef SERIALGC |
| 2771 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 2772 #endif // SERIALGC | |
| 2773 | |
| 2774 // Set bytecode rewriting flags | |
| 2775 set_bytecode_flags(); | |
| 2776 | |
| 2777 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 2778 set_aggressive_opts_flags(); | |
| 2779 | |
| 2780 #ifdef CC_INTERP | |
| 1131 | 2781 // Clear flags not supported by the C++ interpreter |
| 2782 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
| 0 | 2783 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
| 1131 | 2784 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
| 2785 #endif // CC_INTERP | |
| 2786 | |
| 2787 #ifdef ZERO | |
| 2788 // Clear flags not supported by Zero | |
| 2789 FLAG_SET_DEFAULT(TaggedStackInterpreter, false); | |
| 2790 #endif // ZERO | |
| 0 | 2791 |
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2792 #ifdef COMPILER2 |
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2793 if (!UseBiasedLocking || EmitSync != 0) { |
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2794 UseOptoBiasInlining = false; |
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2795 } |
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2796 #endif |
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2797 |
| 0 | 2798 if (PrintCommandLineFlags) { |
| 2799 CommandLineFlags::printSetFlags(); | |
| 2800 } | |
| 2801 | |
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2802 if (PrintFlagsFinal) { |
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2803 CommandLineFlags::printFlags(); |
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2804 } |
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2805 |
| 0 | 2806 return JNI_OK; |
| 2807 } | |
| 2808 | |
| 2809 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 2810 int count = 0; | |
| 2811 while(pl != NULL) { | |
| 2812 count++; | |
| 2813 pl = pl->next(); | |
| 2814 } | |
| 2815 return count; | |
| 2816 } | |
| 2817 | |
| 2818 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 2819 assert(key != NULL, "just checking"); | |
| 2820 SystemProperty* prop; | |
| 2821 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 2822 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 2823 } | |
| 2824 return NULL; | |
| 2825 } | |
| 2826 | |
| 2827 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 2828 int count = 0; | |
| 2829 const char* ret_val = NULL; | |
| 2830 | |
| 2831 while(pl != NULL) { | |
| 2832 if(count >= index) { | |
| 2833 ret_val = pl->key(); | |
| 2834 break; | |
| 2835 } | |
| 2836 count++; | |
| 2837 pl = pl->next(); | |
| 2838 } | |
| 2839 | |
| 2840 return ret_val; | |
| 2841 } | |
| 2842 | |
| 2843 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 2844 int count = 0; | |
| 2845 char* ret_val = NULL; | |
| 2846 | |
| 2847 while(pl != NULL) { | |
| 2848 if(count >= index) { | |
| 2849 ret_val = pl->value(); | |
| 2850 break; | |
| 2851 } | |
| 2852 count++; | |
| 2853 pl = pl->next(); | |
| 2854 } | |
| 2855 | |
| 2856 return ret_val; | |
| 2857 } | |
| 2858 | |
| 2859 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 2860 SystemProperty* p = *plist; | |
| 2861 if (p == NULL) { | |
| 2862 *plist = new_p; | |
| 2863 } else { | |
| 2864 while (p->next() != NULL) { | |
| 2865 p = p->next(); | |
| 2866 } | |
| 2867 p->set_next(new_p); | |
| 2868 } | |
| 2869 } | |
| 2870 | |
| 2871 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 2872 if (plist == NULL) | |
| 2873 return; | |
| 2874 | |
| 2875 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 2876 PropertyList_add(plist, new_p); | |
| 2877 } | |
| 2878 | |
| 2879 // This add maintains unique property key in the list. | |
| 691 | 2880 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 2881 if (plist == NULL) |
| 2882 return; | |
| 2883 | |
| 2884 // If property key exist then update with new value. | |
| 2885 SystemProperty* prop; | |
| 2886 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 2887 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 2888 if (append) { |
| 2889 prop->append_value(v); | |
| 2890 } else { | |
| 2891 prop->set_value(v); | |
| 2892 } | |
| 0 | 2893 return; |
| 2894 } | |
| 2895 } | |
| 2896 | |
| 2897 PropertyList_add(plist, k, v); | |
| 2898 } | |
| 2899 | |
| 2900 #ifdef KERNEL | |
| 2901 char *Arguments::get_kernel_properties() { | |
| 2902 // Find properties starting with kernel and append them to string | |
| 2903 // We need to find out how long they are first because the URL's that they | |
| 2904 // might point to could get long. | |
| 2905 int length = 0; | |
| 2906 SystemProperty* prop; | |
| 2907 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 2908 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 2909 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 2910 } | |
| 2911 } | |
| 2912 // Add one for null terminator. | |
| 2913 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 2914 if (length != 0) { | |
| 2915 int pos = 0; | |
| 2916 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 2917 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 2918 jio_snprintf(&props[pos], length-pos, | |
| 2919 "-D%s=%s ", prop->key(), prop->value()); | |
| 2920 pos = strlen(props); | |
| 2921 } | |
| 2922 } | |
| 2923 } | |
| 2924 // null terminate props in case of null | |
| 2925 props[length] = '\0'; | |
| 2926 return props; | |
| 2927 } | |
| 2928 #endif // KERNEL | |
| 2929 | |
| 2930 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 2931 // Returns true if all of the source pointed by src has been copied over to | |
| 2932 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 2933 // Notes: | |
| 2934 // 1. If the length (buflen) of the destination buffer excluding the | |
| 2935 // NULL terminator character is not long enough for holding the expanded | |
| 2936 // pid characters, it also returns false instead of returning the partially | |
| 2937 // expanded one. | |
| 2938 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 2939 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 2940 char* buf, size_t buflen) { | |
| 2941 const char* p = src; | |
| 2942 char* b = buf; | |
| 2943 const char* src_end = &src[srclen]; | |
| 2944 char* buf_end = &buf[buflen - 1]; | |
| 2945 | |
| 2946 while (p < src_end && b < buf_end) { | |
| 2947 if (*p == '%') { | |
| 2948 switch (*(++p)) { | |
| 2949 case '%': // "%%" ==> "%" | |
| 2950 *b++ = *p++; | |
| 2951 break; | |
| 2952 case 'p': { // "%p" ==> current process id | |
| 2953 // buf_end points to the character before the last character so | |
| 2954 // that we could write '\0' to the end of the buffer. | |
| 2955 size_t buf_sz = buf_end - b + 1; | |
| 2956 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 2957 | |
| 2958 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 2959 // the expanded pid, returns false. | |
| 2960 if (ret < 0 || ret >= (int)buf_sz) { | |
| 2961 return false; | |
| 2962 } else { | |
| 2963 b += ret; | |
| 2964 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 2965 if (p == src_end && b == buf_end + 1) { | |
| 2966 // reach the end of the buffer. | |
| 2967 return true; | |
| 2968 } | |
| 2969 } | |
| 2970 p++; | |
| 2971 break; | |
| 2972 } | |
| 2973 default : | |
| 2974 *b++ = '%'; | |
| 2975 } | |
| 2976 } else { | |
| 2977 *b++ = *p++; | |
| 2978 } | |
| 2979 } | |
| 2980 *b = '\0'; | |
| 2981 return (p == src_end); // return false if not all of the source was copied | |
| 2982 } |