Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 751:20c6f43950b5
6490395: G1: Tidy up command line flags.
Summary: Change G1 flag names to be more consistent and disable some in 'product' mode.
Reviewed-by: tonyp, iveresov
| author | johnc |
|---|---|
| date | Thu, 30 Apr 2009 15:07:53 -0700 |
| parents | be93aad57795 |
| children | df6caf649ff7 |
| 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::_initial_heap_size = 0; | |
| 41 uintx Arguments::_min_heap_size = 0; | |
| 42 Arguments::Mode Arguments::_mode = _mixed; | |
| 43 bool Arguments::_java_compiler = false; | |
| 44 bool Arguments::_xdebug_mode = false; | |
| 45 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 46 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 47 int Arguments::_sun_java_launcher_pid = -1; | |
| 48 | |
| 49 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 50 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 51 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 52 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 53 bool Arguments::_ClipInlining = ClipInlining; | |
| 54 intx Arguments::_Tier2CompileThreshold = Tier2CompileThreshold; | |
| 55 | |
| 56 char* Arguments::SharedArchivePath = NULL; | |
| 57 | |
| 58 AgentLibraryList Arguments::_libraryList; | |
| 59 AgentLibraryList Arguments::_agentList; | |
| 60 | |
| 61 abort_hook_t Arguments::_abort_hook = NULL; | |
| 62 exit_hook_t Arguments::_exit_hook = NULL; | |
| 63 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 64 | |
| 65 | |
| 66 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 67 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 68 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 69 SystemProperty *Arguments::_java_library_path = NULL; | |
| 70 SystemProperty *Arguments::_java_home = NULL; | |
| 71 SystemProperty *Arguments::_java_class_path = NULL; | |
| 72 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
| 73 | |
| 74 char* Arguments::_meta_index_path = NULL; | |
| 75 char* Arguments::_meta_index_dir = NULL; | |
| 76 | |
| 77 static bool force_client_mode = false; | |
| 78 | |
| 79 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 80 | |
| 81 static bool match_option(const JavaVMOption *option, const char* name, | |
| 82 const char** tail) { | |
| 83 int len = (int)strlen(name); | |
| 84 if (strncmp(option->optionString, name, len) == 0) { | |
| 85 *tail = option->optionString + len; | |
| 86 return true; | |
| 87 } else { | |
| 88 return false; | |
| 89 } | |
| 90 } | |
| 91 | |
| 92 static void logOption(const char* opt) { | |
| 93 if (PrintVMOptions) { | |
| 94 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 // Process java launcher properties. | |
| 99 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 100 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 101 // Must do this before setting up other system properties, | |
| 102 // as some of them may depend on launcher type. | |
| 103 for (int index = 0; index < args->nOptions; index++) { | |
| 104 const JavaVMOption* option = args->options + index; | |
| 105 const char* tail; | |
| 106 | |
| 107 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 108 process_java_launcher_argument(tail, option->extraInfo); | |
| 109 continue; | |
| 110 } | |
| 111 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 112 _sun_java_launcher_pid = atoi(tail); | |
| 113 continue; | |
| 114 } | |
| 115 } | |
| 116 } | |
| 117 | |
| 118 // Initialize system properties key and value. | |
| 119 void Arguments::init_system_properties() { | |
| 120 | |
| 121 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.version", "1.0", false)); | |
| 122 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 123 "Java Virtual Machine Specification", false)); | |
| 124 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.vendor", | |
| 125 "Sun Microsystems Inc.", false)); | |
| 126 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 127 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 128 PropertyList_add(&_system_properties, new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); | |
| 129 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 130 | |
| 131 // following are JVMTI agent writeable properties. | |
| 132 // Properties values are set to NULL and they are | |
| 133 // os specific they are initialized in os::init_system_properties_values(). | |
| 134 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 135 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 136 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 137 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 138 _java_home = new SystemProperty("java.home", NULL, true); | |
| 139 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
| 140 | |
| 141 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 142 | |
| 143 // Add to System Property list. | |
| 144 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 145 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 146 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 147 PropertyList_add(&_system_properties, _java_library_path); | |
| 148 PropertyList_add(&_system_properties, _java_home); | |
| 149 PropertyList_add(&_system_properties, _java_class_path); | |
| 150 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
| 151 | |
| 152 // Set OS specific system properties values | |
| 153 os::init_system_properties_values(); | |
| 154 } | |
| 155 | |
| 242 | 156 /** |
| 157 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 158 * When a flag is eliminated, it can be added to this list in order to | |
| 159 * continue accepting this flag on the command-line, while issuing a warning | |
| 160 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 161 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 162 * a flag to die correctly over JDK releases using HSX. | |
| 163 */ | |
| 164 typedef struct { | |
| 165 const char* name; | |
| 166 JDK_Version obsoleted_in; // when the flag went away | |
| 167 JDK_Version accept_until; // which version to start denying the existence | |
| 168 } ObsoleteFlag; | |
| 0 | 169 |
| 242 | 170 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 171 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 172 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 173 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 174 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 175 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 176 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 177 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 178 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 179 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 180 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 181 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 182 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 183 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 184 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 185 { NULL, JDK_Version(0), JDK_Version(0) } | |
| 186 }; | |
| 187 | |
| 188 // Returns true if the flag is obsolete and fits into the range specified | |
| 189 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 190 // value is filled in with the version number when the flag became | |
| 191 // obsolete so that that value can be displayed to the user. | |
| 192 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 193 int i = 0; |
| 242 | 194 assert(version != NULL, "Must provide a version buffer"); |
| 195 while (obsolete_jvm_flags[i].name != NULL) { | |
| 196 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 197 // <flag>=xxx form |
| 198 // [-|+]<flag> form | |
| 242 | 199 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 200 ((s[0] == '+' || s[0] == '-') && |
| 242 | 201 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 202 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 203 *version = flag_status.obsoleted_in; | |
| 204 return true; | |
| 205 } | |
| 0 | 206 } |
| 207 i++; | |
| 208 } | |
| 209 return false; | |
| 210 } | |
| 211 | |
| 212 // Constructs the system class path (aka boot class path) from the following | |
| 213 // components, in order: | |
| 214 // | |
| 215 // prefix // from -Xbootclasspath/p:... | |
| 216 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 217 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 218 // suffix // from -Xbootclasspath/a:... | |
| 219 // | |
| 220 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 221 // directories are added to the sysclasspath just before the base. | |
| 222 // | |
| 223 // This could be AllStatic, but it isn't needed after argument processing is | |
| 224 // complete. | |
| 225 class SysClassPath: public StackObj { | |
| 226 public: | |
| 227 SysClassPath(const char* base); | |
| 228 ~SysClassPath(); | |
| 229 | |
| 230 inline void set_base(const char* base); | |
| 231 inline void add_prefix(const char* prefix); | |
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232 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 233 inline void add_suffix(const char* suffix); |
| 234 inline void reset_path(const char* base); | |
| 235 | |
| 236 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 237 // property. Must be called after all command-line arguments have been | |
| 238 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 239 // combined_path(). | |
| 240 void expand_endorsed(); | |
| 241 | |
| 242 inline const char* get_base() const { return _items[_scp_base]; } | |
| 243 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 244 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 245 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 246 | |
| 247 // Combine all the components into a single c-heap-allocated string; caller | |
| 248 // must free the string if/when no longer needed. | |
| 249 char* combined_path(); | |
| 250 | |
| 251 private: | |
| 252 // Utility routines. | |
| 253 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 254 static char* add_jars_to_path(char* path, const char* directory); | |
| 255 | |
| 256 inline void reset_item_at(int index); | |
| 257 | |
| 258 // Array indices for the items that make up the sysclasspath. All except the | |
| 259 // base are allocated in the C heap and freed by this class. | |
| 260 enum { | |
| 261 _scp_prefix, // from -Xbootclasspath/p:... | |
| 262 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 263 _scp_base, // the default sysclasspath | |
| 264 _scp_suffix, // from -Xbootclasspath/a:... | |
| 265 _scp_nitems // the number of items, must be last. | |
| 266 }; | |
| 267 | |
| 268 const char* _items[_scp_nitems]; | |
| 269 DEBUG_ONLY(bool _expansion_done;) | |
| 270 }; | |
| 271 | |
| 272 SysClassPath::SysClassPath(const char* base) { | |
| 273 memset(_items, 0, sizeof(_items)); | |
| 274 _items[_scp_base] = base; | |
| 275 DEBUG_ONLY(_expansion_done = false;) | |
| 276 } | |
| 277 | |
| 278 SysClassPath::~SysClassPath() { | |
| 279 // Free everything except the base. | |
| 280 for (int i = 0; i < _scp_nitems; ++i) { | |
| 281 if (i != _scp_base) reset_item_at(i); | |
| 282 } | |
| 283 DEBUG_ONLY(_expansion_done = false;) | |
| 284 } | |
| 285 | |
| 286 inline void SysClassPath::set_base(const char* base) { | |
| 287 _items[_scp_base] = base; | |
| 288 } | |
| 289 | |
| 290 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 291 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 292 } | |
| 293 | |
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294 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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295 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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296 } |
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297 |
| 0 | 298 inline void SysClassPath::add_suffix(const char* suffix) { |
| 299 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 300 } | |
| 301 | |
| 302 inline void SysClassPath::reset_item_at(int index) { | |
| 303 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 304 if (_items[index] != NULL) { | |
| 305 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 306 _items[index] = NULL; | |
| 307 } | |
| 308 } | |
| 309 | |
| 310 inline void SysClassPath::reset_path(const char* base) { | |
| 311 // Clear the prefix and suffix. | |
| 312 reset_item_at(_scp_prefix); | |
| 313 reset_item_at(_scp_suffix); | |
| 314 set_base(base); | |
| 315 } | |
| 316 | |
| 317 //------------------------------------------------------------------------------ | |
| 318 | |
| 319 void SysClassPath::expand_endorsed() { | |
| 320 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 321 | |
| 322 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 323 if (path == NULL) { | |
| 324 path = Arguments::get_endorsed_dir(); | |
| 325 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 326 } | |
| 327 | |
| 328 char* expanded_path = NULL; | |
| 329 const char separator = *os::path_separator(); | |
| 330 const char* const end = path + strlen(path); | |
| 331 while (path < end) { | |
| 332 const char* tmp_end = strchr(path, separator); | |
| 333 if (tmp_end == NULL) { | |
| 334 expanded_path = add_jars_to_path(expanded_path, path); | |
| 335 path = end; | |
| 336 } else { | |
| 337 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 338 memcpy(dirpath, path, tmp_end - path); | |
| 339 dirpath[tmp_end - path] = '\0'; | |
| 340 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 341 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 342 path = tmp_end + 1; | |
| 343 } | |
| 344 } | |
| 345 _items[_scp_endorsed] = expanded_path; | |
| 346 DEBUG_ONLY(_expansion_done = true;) | |
| 347 } | |
| 348 | |
| 349 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 350 // c-heap-allocated string. | |
| 351 char* SysClassPath::combined_path() { | |
| 352 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 353 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 354 | |
| 355 size_t lengths[_scp_nitems]; | |
| 356 size_t total_len = 0; | |
| 357 | |
| 358 const char separator = *os::path_separator(); | |
| 359 | |
| 360 // Get the lengths. | |
| 361 int i; | |
| 362 for (i = 0; i < _scp_nitems; ++i) { | |
| 363 if (_items[i] != NULL) { | |
| 364 lengths[i] = strlen(_items[i]); | |
| 365 // Include space for the separator char (or a NULL for the last item). | |
| 366 total_len += lengths[i] + 1; | |
| 367 } | |
| 368 } | |
| 369 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 370 | |
| 371 // Copy the _items to a single string. | |
| 372 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 373 char* cp_tmp = cp; | |
| 374 for (i = 0; i < _scp_nitems; ++i) { | |
| 375 if (_items[i] != NULL) { | |
| 376 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 377 cp_tmp += lengths[i]; | |
| 378 *cp_tmp++ = separator; | |
| 379 } | |
| 380 } | |
| 381 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 382 return cp; | |
| 383 } | |
| 384 | |
| 385 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 386 char* | |
| 387 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 388 char *cp; | |
| 389 | |
| 390 assert(str != NULL, "just checking"); | |
| 391 if (path == NULL) { | |
| 392 size_t len = strlen(str) + 1; | |
| 393 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 394 memcpy(cp, str, len); // copy the trailing null | |
| 395 } else { | |
| 396 const char separator = *os::path_separator(); | |
| 397 size_t old_len = strlen(path); | |
| 398 size_t str_len = strlen(str); | |
| 399 size_t len = old_len + str_len + 2; | |
| 400 | |
| 401 if (prepend) { | |
| 402 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 403 char* cp_tmp = cp; | |
| 404 memcpy(cp_tmp, str, str_len); | |
| 405 cp_tmp += str_len; | |
| 406 *cp_tmp = separator; | |
| 407 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 408 FREE_C_HEAP_ARRAY(char, path); | |
| 409 } else { | |
| 410 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 411 char* cp_tmp = cp + old_len; | |
| 412 *cp_tmp = separator; | |
| 413 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 414 } | |
| 415 } | |
| 416 return cp; | |
| 417 } | |
| 418 | |
| 419 // Scan the directory and append any jar or zip files found to path. | |
| 420 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 421 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 422 DIR* dir = os::opendir(directory); | |
| 423 if (dir == NULL) return path; | |
| 424 | |
| 425 char dir_sep[2] = { '\0', '\0' }; | |
| 426 size_t directory_len = strlen(directory); | |
| 427 const char fileSep = *os::file_separator(); | |
| 428 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 429 | |
| 430 /* Scan the directory for jars/zips, appending them to path. */ | |
| 431 struct dirent *entry; | |
| 432 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 433 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 434 const char* name = entry->d_name; | |
| 435 const char* ext = name + strlen(name) - 4; | |
| 436 bool isJarOrZip = ext > name && | |
| 437 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 438 os::file_name_strcmp(ext, ".zip") == 0); | |
| 439 if (isJarOrZip) { | |
| 440 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 441 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 442 path = add_to_path(path, jarpath, false); | |
| 443 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 444 } | |
| 445 } | |
| 446 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 447 os::closedir(dir); | |
| 448 return path; | |
| 449 } | |
| 450 | |
| 451 // Parses a memory size specification string. | |
|
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452 static bool atomull(const char *s, julong* result) { |
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453 julong n = 0; |
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454 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 455 if (args_read != 1) { |
| 456 return false; | |
| 457 } | |
| 458 while (*s != '\0' && isdigit(*s)) { | |
| 459 s++; | |
| 460 } | |
| 461 // 4705540: illegal if more characters are found after the first non-digit | |
| 462 if (strlen(s) > 1) { | |
| 463 return false; | |
| 464 } | |
| 465 switch (*s) { | |
| 466 case 'T': case 't': | |
| 467 *result = n * G * K; | |
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468 // Check for overflow. |
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469 if (*result/((julong)G * K) != n) return false; |
| 0 | 470 return true; |
| 471 case 'G': case 'g': | |
| 472 *result = n * G; | |
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473 if (*result/G != n) return false; |
| 0 | 474 return true; |
| 475 case 'M': case 'm': | |
| 476 *result = n * M; | |
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477 if (*result/M != n) return false; |
| 0 | 478 return true; |
| 479 case 'K': case 'k': | |
| 480 *result = n * K; | |
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481 if (*result/K != n) return false; |
| 0 | 482 return true; |
| 483 case '\0': | |
| 484 *result = n; | |
| 485 return true; | |
| 486 default: | |
| 487 return false; | |
| 488 } | |
| 489 } | |
| 490 | |
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491 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 492 if (size < min_size) return arg_too_small; |
| 493 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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494 if (size > max_uintx) return arg_too_big; |
| 0 | 495 return arg_in_range; |
| 496 } | |
| 497 | |
| 498 // Describe an argument out of range error | |
| 499 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 500 switch(errcode) { | |
| 501 case arg_too_big: | |
| 502 jio_fprintf(defaultStream::error_stream(), | |
| 503 "The specified size exceeds the maximum " | |
| 504 "representable size.\n"); | |
| 505 break; | |
| 506 case arg_too_small: | |
| 507 case arg_unreadable: | |
| 508 case arg_in_range: | |
| 509 // do nothing for now | |
| 510 break; | |
| 511 default: | |
| 512 ShouldNotReachHere(); | |
| 513 } | |
| 514 } | |
| 515 | |
| 516 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 517 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 518 } | |
| 519 | |
| 520 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 521 double v; | |
| 522 if (sscanf(value, "%lf", &v) != 1) { | |
| 523 return false; | |
| 524 } | |
| 525 | |
| 526 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 527 return true; | |
| 528 } | |
| 529 return false; | |
| 530 } | |
| 531 | |
| 532 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
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533 julong v; |
| 0 | 534 intx intx_v; |
| 535 bool is_neg = false; | |
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536 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 537 if (*value == '-') { |
| 538 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 539 return false; | |
| 540 } | |
| 541 value++; | |
| 542 is_neg = true; | |
| 543 } | |
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544 if (!atomull(value, &v)) { |
| 0 | 545 return false; |
| 546 } | |
| 547 intx_v = (intx) v; | |
| 548 if (is_neg) { | |
| 549 intx_v = -intx_v; | |
| 550 } | |
| 551 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 552 return true; | |
| 553 } | |
| 554 uintx uintx_v = (uintx) v; | |
| 555 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 556 return true; | |
| 557 } | |
| 558 return false; | |
| 559 } | |
| 560 | |
| 561 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 562 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 563 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 564 FREE_C_HEAP_ARRAY(char, value); | |
| 565 return true; | |
| 566 } | |
| 567 | |
| 568 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 569 const char* old_value = ""; | |
| 570 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 571 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 572 size_t new_len = strlen(new_value); | |
| 573 const char* value; | |
| 574 char* free_this_too = NULL; | |
| 575 if (old_len == 0) { | |
| 576 value = new_value; | |
| 577 } else if (new_len == 0) { | |
| 578 value = old_value; | |
| 579 } else { | |
| 580 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 581 // each new setting adds another LINE to the switch: | |
| 582 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 583 value = buf; | |
| 584 free_this_too = buf; | |
| 585 } | |
| 586 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 587 // CommandLineFlags always returns a pointer that needs freeing. | |
| 588 FREE_C_HEAP_ARRAY(char, value); | |
| 589 if (free_this_too != NULL) { | |
| 590 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 591 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 592 } | |
| 593 return true; | |
| 594 } | |
| 595 | |
| 596 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 597 | |
| 598 // range of acceptable characters spelled out for portability reasons | |
| 599 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 600 #define BUFLEN 255 | |
| 601 char name[BUFLEN+1]; | |
| 602 char dummy; | |
| 603 | |
| 604 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 605 return set_bool_flag(name, false, origin); | |
| 606 } | |
| 607 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 608 return set_bool_flag(name, true, origin); | |
| 609 } | |
| 610 | |
| 611 char punct; | |
| 612 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 613 const char* value = strchr(arg, '=') + 1; | |
| 614 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 615 if (flag != NULL && flag->is_ccstr()) { | |
| 616 if (flag->ccstr_accumulates()) { | |
| 617 return append_to_string_flag(name, value, origin); | |
| 618 } else { | |
| 619 if (value[0] == '\0') { | |
| 620 value = NULL; | |
| 621 } | |
| 622 return set_string_flag(name, value, origin); | |
| 623 } | |
| 624 } | |
| 625 } | |
| 626 | |
| 627 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 628 const char* value = strchr(arg, '=') + 1; | |
| 629 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 630 if (value[0] == '\0') { | |
| 631 value = NULL; | |
| 632 } | |
| 633 return set_string_flag(name, value, origin); | |
| 634 } | |
| 635 | |
| 636 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 637 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 638 #define NUMBER_RANGE "[0123456789]" | |
| 639 char value[BUFLEN + 1]; | |
| 640 char value2[BUFLEN + 1]; | |
| 641 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 642 // Looks like a floating-point number -- try again with more lenient format string | |
| 643 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 644 return set_fp_numeric_flag(name, value, origin); | |
| 645 } | |
| 646 } | |
| 647 | |
| 648 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 649 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 650 return set_numeric_flag(name, value, origin); | |
| 651 } | |
| 652 | |
| 653 return false; | |
| 654 } | |
| 655 | |
| 656 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 657 assert(bldarray != NULL, "illegal argument"); | |
| 658 | |
| 659 if (arg == NULL) { | |
| 660 return; | |
| 661 } | |
| 662 | |
| 663 int index = *count; | |
| 664 | |
| 665 // expand the array and add arg to the last element | |
| 666 (*count)++; | |
| 667 if (*bldarray == NULL) { | |
| 668 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 669 } else { | |
| 670 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 671 } | |
| 672 (*bldarray)[index] = strdup(arg); | |
| 673 } | |
| 674 | |
| 675 void Arguments::build_jvm_args(const char* arg) { | |
| 676 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 677 } | |
| 678 | |
| 679 void Arguments::build_jvm_flags(const char* arg) { | |
| 680 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 681 } | |
| 682 | |
| 683 // utility function to return a string that concatenates all | |
| 684 // strings in a given char** array | |
| 685 const char* Arguments::build_resource_string(char** args, int count) { | |
| 686 if (args == NULL || count == 0) { | |
| 687 return NULL; | |
| 688 } | |
| 689 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 690 for (int i = 1; i < count; i++) { | |
| 691 length += strlen(args[i]) + 1; // add 1 for a space | |
| 692 } | |
| 693 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 694 strcpy(s, args[0]); | |
| 695 for (int j = 1; j < count; j++) { | |
| 696 strcat(s, " "); | |
| 697 strcat(s, args[j]); | |
| 698 } | |
| 699 return (const char*) s; | |
| 700 } | |
| 701 | |
| 702 void Arguments::print_on(outputStream* st) { | |
| 703 st->print_cr("VM Arguments:"); | |
| 704 if (num_jvm_flags() > 0) { | |
| 705 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 706 } | |
| 707 if (num_jvm_args() > 0) { | |
| 708 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 709 } | |
| 710 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 711 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 712 } | |
| 713 | |
| 714 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 715 if (_num_jvm_flags > 0) { | |
| 716 for (int i=0; i < _num_jvm_flags; i++) { | |
| 717 st->print("%s ", _jvm_flags_array[i]); | |
| 718 } | |
| 719 st->print_cr(""); | |
| 720 } | |
| 721 } | |
| 722 | |
| 723 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 724 if (_num_jvm_args > 0) { | |
| 725 for (int i=0; i < _num_jvm_args; i++) { | |
| 726 st->print("%s ", _jvm_args_array[i]); | |
| 727 } | |
| 728 st->print_cr(""); | |
| 729 } | |
| 730 } | |
| 731 | |
| 242 | 732 bool Arguments::process_argument(const char* arg, |
| 733 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 734 | |
| 735 JDK_Version since = JDK_Version(); | |
| 0 | 736 |
| 737 if (parse_argument(arg, origin)) { | |
| 738 // do nothing | |
| 242 | 739 } else if (is_newly_obsolete(arg, &since)) { |
| 740 enum { bufsize = 256 }; | |
| 741 char buffer[bufsize]; | |
| 742 since.to_string(buffer, bufsize); | |
| 0 | 743 jio_fprintf(defaultStream::error_stream(), |
| 242 | 744 "Warning: The flag %s has been EOL'd as of %s and will" |
| 745 " be ignored\n", arg, buffer); | |
| 0 | 746 } else { |
| 747 if (!ignore_unrecognized) { | |
| 748 jio_fprintf(defaultStream::error_stream(), | |
| 749 "Unrecognized VM option '%s'\n", arg); | |
| 750 // allow for commandline "commenting out" options like -XX:#+Verbose | |
| 751 if (strlen(arg) == 0 || arg[0] != '#') { | |
| 752 return false; | |
| 753 } | |
| 754 } | |
| 755 } | |
| 756 return true; | |
| 757 } | |
| 758 | |
| 759 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 760 FILE* stream = fopen(file_name, "rb"); | |
| 761 if (stream == NULL) { | |
| 762 if (should_exist) { | |
| 763 jio_fprintf(defaultStream::error_stream(), | |
| 764 "Could not open settings file %s\n", file_name); | |
| 765 return false; | |
| 766 } else { | |
| 767 return true; | |
| 768 } | |
| 769 } | |
| 770 | |
| 771 char token[1024]; | |
| 772 int pos = 0; | |
| 773 | |
| 774 bool in_white_space = true; | |
| 775 bool in_comment = false; | |
| 776 bool in_quote = false; | |
| 777 char quote_c = 0; | |
| 778 bool result = true; | |
| 779 | |
| 780 int c = getc(stream); | |
| 781 while(c != EOF) { | |
| 782 if (in_white_space) { | |
| 783 if (in_comment) { | |
| 784 if (c == '\n') in_comment = false; | |
| 785 } else { | |
| 786 if (c == '#') in_comment = true; | |
| 787 else if (!isspace(c)) { | |
| 788 in_white_space = false; | |
| 789 token[pos++] = c; | |
| 790 } | |
| 791 } | |
| 792 } else { | |
| 793 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 794 // token ends at newline, or at unquoted whitespace | |
| 795 // this allows a way to include spaces in string-valued options | |
| 796 token[pos] = '\0'; | |
| 797 logOption(token); | |
| 798 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 799 build_jvm_flags(token); | |
| 800 pos = 0; | |
| 801 in_white_space = true; | |
| 802 in_quote = false; | |
| 803 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 804 in_quote = true; | |
| 805 quote_c = c; | |
| 806 } else if (in_quote && (c == quote_c)) { | |
| 807 in_quote = false; | |
| 808 } else { | |
| 809 token[pos++] = c; | |
| 810 } | |
| 811 } | |
| 812 c = getc(stream); | |
| 813 } | |
| 814 if (pos > 0) { | |
| 815 token[pos] = '\0'; | |
| 816 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 817 build_jvm_flags(token); | |
| 818 } | |
| 819 fclose(stream); | |
| 820 return result; | |
| 821 } | |
| 822 | |
| 823 //============================================================================================================= | |
| 824 // Parsing of properties (-D) | |
| 825 | |
| 826 const char* Arguments::get_property(const char* key) { | |
| 827 return PropertyList_get_value(system_properties(), key); | |
| 828 } | |
| 829 | |
| 830 bool Arguments::add_property(const char* prop) { | |
| 831 const char* eq = strchr(prop, '='); | |
| 832 char* key; | |
| 833 // ns must be static--its address may be stored in a SystemProperty object. | |
| 834 const static char ns[1] = {0}; | |
| 835 char* value = (char *)ns; | |
| 836 | |
| 837 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 838 key = AllocateHeap(key_len + 1, "add_property"); | |
| 839 strncpy(key, prop, key_len); | |
| 840 key[key_len] = '\0'; | |
| 841 | |
| 842 if (eq != NULL) { | |
| 843 size_t value_len = strlen(prop) - key_len - 1; | |
| 844 value = AllocateHeap(value_len + 1, "add_property"); | |
| 845 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 846 } | |
| 847 | |
| 848 if (strcmp(key, "java.compiler") == 0) { | |
| 849 process_java_compiler_argument(value); | |
| 850 FreeHeap(key); | |
| 851 if (eq != NULL) { | |
| 852 FreeHeap(value); | |
| 853 } | |
| 854 return true; | |
| 691 | 855 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 856 _java_command = value; |
| 857 | |
| 858 // don't add this property to the properties exposed to the java application | |
| 859 FreeHeap(key); | |
| 860 return true; | |
| 691 | 861 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 862 // launcher.pid property is private and is processed |
| 863 // in process_sun_java_launcher_properties(); | |
| 864 // the sun.java.launcher property is passed on to the java application | |
| 865 FreeHeap(key); | |
| 866 if (eq != NULL) { | |
| 867 FreeHeap(value); | |
| 868 } | |
| 869 return true; | |
| 691 | 870 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 871 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 872 // its value without going through the property list or making a Java call. | |
| 873 _java_vendor_url_bug = value; | |
| 691 | 874 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 875 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 876 return true; | |
| 0 | 877 } |
| 878 // Create new property and add at the end of the list | |
| 879 PropertyList_unique_add(&_system_properties, key, value); | |
| 880 return true; | |
| 881 } | |
| 882 | |
| 883 //=========================================================================================================== | |
| 884 // Setting int/mixed/comp mode flags | |
| 885 | |
| 886 void Arguments::set_mode_flags(Mode mode) { | |
| 887 // Set up default values for all flags. | |
| 888 // If you add a flag to any of the branches below, | |
| 889 // add a default value for it here. | |
| 890 set_java_compiler(false); | |
| 891 _mode = mode; | |
| 892 | |
| 893 // Ensure Agent_OnLoad has the correct initial values. | |
| 894 // This may not be the final mode; mode may change later in onload phase. | |
| 895 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
| 691 | 896 (char*)Abstract_VM_Version::vm_info_string(), false); |
| 0 | 897 |
| 898 UseInterpreter = true; | |
| 899 UseCompiler = true; | |
| 900 UseLoopCounter = true; | |
| 901 | |
| 902 // Default values may be platform/compiler dependent - | |
| 903 // use the saved values | |
| 904 ClipInlining = Arguments::_ClipInlining; | |
| 905 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 906 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 907 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 908 Tier2CompileThreshold = Arguments::_Tier2CompileThreshold; | |
| 909 | |
| 910 // Change from defaults based on mode | |
| 911 switch (mode) { | |
| 912 default: | |
| 913 ShouldNotReachHere(); | |
| 914 break; | |
| 915 case _int: | |
| 916 UseCompiler = false; | |
| 917 UseLoopCounter = false; | |
| 918 AlwaysCompileLoopMethods = false; | |
| 919 UseOnStackReplacement = false; | |
| 920 break; | |
| 921 case _mixed: | |
| 922 // same as default | |
| 923 break; | |
| 924 case _comp: | |
| 925 UseInterpreter = false; | |
| 926 BackgroundCompilation = false; | |
| 927 ClipInlining = false; | |
| 928 break; | |
| 929 } | |
| 930 } | |
| 931 | |
| 932 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 933 // incompatible command line options were chosen. | |
| 934 | |
| 935 static void no_shared_spaces() { | |
| 936 if (RequireSharedSpaces) { | |
| 937 jio_fprintf(defaultStream::error_stream(), | |
| 938 "Class data sharing is inconsistent with other specified options.\n"); | |
| 939 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 940 } else { | |
| 941 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 942 } | |
| 943 } | |
| 944 | |
| 945 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC | |
| 946 // if it's not explictly set or unset. If the user has chosen | |
| 947 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 948 // set it, unless this is a single cpu machine. | |
| 949 void Arguments::set_parnew_gc_flags() { | |
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950 assert(!UseSerialGC && !UseParallelGC && !UseG1GC, |
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951 "control point invariant"); |
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952 assert(UseParNewGC, "Error"); |
| 0 | 953 |
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954 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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955 // complete. |
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956 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
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957 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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958 } |
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959 |
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960 if (ParallelGCThreads == 0) { |
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961 FLAG_SET_DEFAULT(ParallelGCThreads, |
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962 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 963 if (FLAG_IS_DEFAULT(ParallelGCThreads) && ParallelGCThreads == 1) { |
| 964 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 965 } | |
| 966 } | |
| 967 if (!UseParNewGC) { | |
| 968 FLAG_SET_DEFAULT(ParallelGCThreads, 0); | |
| 969 } else { | |
| 970 no_shared_spaces(); | |
| 971 | |
| 695 | 972 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
| 0 | 973 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
| 974 // we set them to 1024 and 1024. | |
| 975 // See CR 6362902. | |
| 976 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 977 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 978 } | |
| 979 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 980 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 981 } | |
| 982 | |
| 983 // AlwaysTenure flag should make ParNew to promote all at first collection. | |
| 984 // See CR 6362902. | |
| 985 if (AlwaysTenure) { | |
| 986 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 987 } | |
| 695 | 988 // When using compressed oops, we use local overflow stacks, |
| 989 // rather than using a global overflow list chained through | |
| 990 // the klass word of the object's pre-image. | |
| 991 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
| 992 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
| 993 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
| 994 } | |
| 995 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
| 996 } | |
| 997 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
| 0 | 998 } |
| 999 } | |
| 1000 | |
| 1001 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1002 // sparc/solaris for certain applications, but would gain from | |
| 1003 // further optimization and tuning efforts, and would almost | |
| 1004 // certainly gain from analysis of platform and environment. | |
| 1005 void Arguments::set_cms_and_parnew_gc_flags() { | |
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1006 assert(!UseSerialGC && !UseParallelGC, "Error"); |
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1007 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1008 |
| 0 | 1009 // If we are using CMS, we prefer to UseParNewGC, |
| 1010 // unless explicitly forbidden. | |
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1011 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1012 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1013 } |
| 1014 | |
| 1015 // Turn off AdaptiveSizePolicy by default for cms until it is | |
|
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1016 // complete. |
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1017 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
| 0 | 1018 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
| 1019 } | |
| 1020 | |
| 1021 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1022 // as needed. | |
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1023 if (UseParNewGC) { |
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1024 set_parnew_gc_flags(); |
| 0 | 1025 } |
| 1026 | |
| 1027 // Now make adjustments for CMS | |
| 1028 size_t young_gen_per_worker; | |
| 1029 intx new_ratio; | |
| 1030 size_t min_new_default; | |
| 1031 intx tenuring_default; | |
| 1032 if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0 | |
| 1033 if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) { | |
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1034 FLAG_SET_ERGO(intx, CMSYoungGenPerWorker, 4*M); |
| 0 | 1035 } |
| 1036 young_gen_per_worker = 4*M; | |
| 1037 new_ratio = (intx)15; | |
| 1038 min_new_default = 4*M; | |
| 1039 tenuring_default = (intx)0; | |
| 1040 } else { // new defaults: "new" as of 6.0 | |
| 1041 young_gen_per_worker = CMSYoungGenPerWorker; | |
| 1042 new_ratio = (intx)7; | |
| 1043 min_new_default = 16*M; | |
| 1044 tenuring_default = (intx)4; | |
| 1045 } | |
| 1046 | |
| 1047 // Preferred young gen size for "short" pauses | |
| 1048 const uintx parallel_gc_threads = | |
| 1049 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1050 const size_t preferred_max_new_size_unaligned = | |
| 1051 ScaleForWordSize(young_gen_per_worker * parallel_gc_threads); | |
| 1052 const size_t preferred_max_new_size = | |
| 1053 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); | |
| 1054 | |
| 1055 // Unless explicitly requested otherwise, size young gen | |
| 1056 // for "short" pauses ~ 4M*ParallelGCThreads | |
| 1057 if (FLAG_IS_DEFAULT(MaxNewSize)) { // MaxNewSize not set at command-line | |
| 1058 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line | |
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1059 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1060 } else { |
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1061 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1062 } |
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1063 if(PrintGCDetails && Verbose) { |
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1064 // Too early to use gclog_or_tty |
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1065 tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
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1066 } |
| 0 | 1067 } |
| 1068 // Unless explicitly requested otherwise, prefer a large | |
| 1069 // Old to Young gen size so as to shift the collection load | |
| 1070 // to the old generation concurrent collector | |
| 1071 if (FLAG_IS_DEFAULT(NewRatio)) { | |
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1072 FLAG_SET_ERGO(intx, NewRatio, MAX2(NewRatio, new_ratio)); |
| 0 | 1073 |
| 1074 size_t min_new = align_size_up(ScaleForWordSize(min_new_default), os::vm_page_size()); | |
| 1075 size_t prev_initial_size = initial_heap_size(); | |
| 1076 if (prev_initial_size != 0 && prev_initial_size < min_new+OldSize) { | |
| 1077 set_initial_heap_size(min_new+OldSize); | |
| 1078 // Currently minimum size and the initial heap sizes are the same. | |
| 1079 set_min_heap_size(initial_heap_size()); | |
| 1080 if (PrintGCDetails && Verbose) { | |
| 1081 warning("Initial heap size increased to " SIZE_FORMAT " M from " | |
| 1082 SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", | |
| 1083 initial_heap_size()/M, prev_initial_size/M); | |
| 1084 } | |
| 1085 } | |
| 1086 // MaxHeapSize is aligned down in collectorPolicy | |
| 1087 size_t max_heap = align_size_down(MaxHeapSize, | |
| 1088 CardTableRS::ct_max_alignment_constraint()); | |
| 1089 | |
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1090 if(PrintGCDetails && Verbose) { |
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1091 // Too early to use gclog_or_tty |
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1092 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1093 " initial_heap_size: " SIZE_FORMAT |
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1094 " max_heap: " SIZE_FORMAT, |
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1095 min_heap_size(), initial_heap_size(), max_heap); |
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1096 } |
| 0 | 1097 if (max_heap > min_new) { |
| 1098 // Unless explicitly requested otherwise, make young gen | |
| 1099 // at least min_new, and at most preferred_max_new_size. | |
| 1100 if (FLAG_IS_DEFAULT(NewSize)) { | |
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1101 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1102 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
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1103 if(PrintGCDetails && Verbose) { |
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1104 // Too early to use gclog_or_tty |
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1105 tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); |
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1106 } |
| 0 | 1107 } |
| 1108 // Unless explicitly requested otherwise, size old gen | |
| 1109 // so that it's at least 3X of NewSize to begin with; | |
| 1110 // later NewRatio will decide how it grows; see above. | |
| 1111 if (FLAG_IS_DEFAULT(OldSize)) { | |
| 1112 if (max_heap > NewSize) { | |
|
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1113 FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); |
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1114 if(PrintGCDetails && Verbose) { |
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1115 // Too early to use gclog_or_tty |
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1116 tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); |
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1117 } |
| 0 | 1118 } |
| 1119 } | |
| 1120 } | |
| 1121 } | |
| 1122 // Unless explicitly requested otherwise, definitely | |
| 1123 // promote all objects surviving "tenuring_default" scavenges. | |
| 1124 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1125 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
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1126 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1127 } |
| 1128 // If we decided above (or user explicitly requested) | |
| 1129 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1130 // prefer minuscule survivor spaces so as not to waste | |
| 1131 // space for (non-existent) survivors | |
| 1132 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
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1133 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1134 } |
| 1135 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1136 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1137 // This is done in order to make ParNew+CMS configuration to work | |
| 1138 // with YoungPLABSize and OldPLABSize options. | |
| 1139 // See CR 6362902. | |
| 1140 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1141 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
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1142 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1143 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1144 // the value (either from the command line or ergonomics) of |
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1145 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1146 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
| 0 | 1147 } |
| 1148 else { | |
| 1149 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. | |
| 1150 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1151 // we'll let it to take precedence. | |
| 1152 jio_fprintf(defaultStream::error_stream(), | |
| 1153 "Both OldPLABSize and CMSParPromoteBlocksToClaim options are specified " | |
| 1154 "for the CMS collector. CMSParPromoteBlocksToClaim will take precedence.\n"); | |
| 1155 } | |
| 1156 } | |
| 1157 } | |
| 1158 | |
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1159 inline uintx max_heap_for_compressed_oops() { |
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1160 LP64_ONLY(return oopDesc::OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); |
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1161 NOT_LP64(return DefaultMaxRAM); |
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1162 } |
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1163 |
| 0 | 1164 bool Arguments::should_auto_select_low_pause_collector() { |
| 1165 if (UseAutoGCSelectPolicy && | |
| 1166 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1167 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1168 if (PrintGCDetails) { | |
| 1169 // Cannot use gclog_or_tty yet. | |
| 1170 tty->print_cr("Automatic selection of the low pause collector" | |
| 1171 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1172 } | |
| 1173 return true; | |
| 1174 } | |
| 1175 return false; | |
| 1176 } | |
| 1177 | |
| 1178 void Arguments::set_ergonomics_flags() { | |
| 1179 // Parallel GC is not compatible with sharing. If one specifies | |
| 1180 // that they want sharing explicitly, do not set ergonmics flags. | |
| 1181 if (DumpSharedSpaces || ForceSharedSpaces) { | |
| 1182 return; | |
| 1183 } | |
| 1184 | |
| 1185 if (os::is_server_class_machine() && !force_client_mode ) { | |
| 1186 // If no other collector is requested explicitly, | |
| 1187 // let the VM select the collector based on | |
| 1188 // machine class and automatic selection policy. | |
| 1189 if (!UseSerialGC && | |
| 1190 !UseConcMarkSweepGC && | |
|
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1191 !UseG1GC && |
| 0 | 1192 !UseParNewGC && |
| 1193 !DumpSharedSpaces && | |
| 1194 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1195 if (should_auto_select_low_pause_collector()) { | |
| 1196 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1197 } else { | |
| 1198 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1199 } | |
| 1200 no_shared_spaces(); | |
| 1201 } | |
| 1202 } | |
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1203 |
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1204 #ifdef _LP64 |
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1205 // Compressed Headers do not work with CMS, which uses a bit in the klass |
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1206 // field offset to determine free list chunk markers. |
|
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1207 // Check that UseCompressedOops can be set with the max heap size allocated |
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1208 // by ergonomics. |
| 187 | 1209 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 344 | 1210 if (FLAG_IS_DEFAULT(UseCompressedOops) && !UseG1GC) { |
| 239 | 1211 // Turn off until bug is fixed. |
| 185 | 1212 // the following line to return it to default status. |
| 239 | 1213 // FLAG_SET_ERGO(bool, UseCompressedOops, true); |
| 344 | 1214 } else if (UseCompressedOops && UseG1GC) { |
| 1215 warning(" UseCompressedOops does not currently work with UseG1GC; switching off UseCompressedOops. "); | |
| 1216 FLAG_SET_DEFAULT(UseCompressedOops, false); | |
|
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1217 } |
|
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1218 #ifdef _WIN64 |
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1219 if (UseLargePages && UseCompressedOops) { |
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1220 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1221 // mode, when large pages are specified on windows. |
|
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1222 // This flag could be switched ON if narrow oop base address is set to 0, |
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1223 // see code in Universe::initialize_heap(). |
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1224 Universe::set_narrow_oop_use_implicit_null_checks(false); |
|
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1225 } |
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1226 #endif // _WIN64 |
|
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1227 } else { |
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1228 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1229 warning("Max heap size too large for Compressed Oops"); |
|
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1230 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1231 } |
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1232 } |
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1233 // Also checks that certain machines are slower with compressed oops |
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1234 // in vm_version initialization code. |
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1235 #endif // _LP64 |
| 0 | 1236 } |
| 1237 | |
| 1238 void Arguments::set_parallel_gc_flags() { | |
|
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1239 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 0 | 1240 // If parallel old was requested, automatically enable parallel scavenge. |
| 1241 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1242 FLAG_SET_DEFAULT(UseParallelGC, true); | |
| 1243 } | |
| 1244 | |
| 1245 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1246 // of the physical memory, up to a maximum of 1GB. | |
| 1247 if (UseParallelGC) { | |
|
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|
1248 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
|
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|
1249 Abstract_VM_Version::parallel_worker_threads()); |
|
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1250 |
|
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1251 // PS is a server collector, setup the heap sizes accordingly. |
|
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1252 set_server_heap_size(); |
| 0 | 1253 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1254 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1255 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1256 // See CR 6362902 for details. | |
| 1257 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1258 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1259 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1260 } | |
| 1261 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1262 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1263 } | |
| 1264 } | |
| 1265 | |
| 1266 if (UseParallelOldGC) { | |
| 1267 // Par compact uses lower default values since they are treated as | |
|
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1268 // minimums. These are different defaults because of the different |
|
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1269 // interpretation and are not ergonomically set. |
| 0 | 1270 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
13
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|
1271 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1272 } |
| 1273 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
13
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|
1274 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1275 } |
| 1276 } | |
| 1277 } | |
| 1278 } | |
| 1279 | |
|
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1280 void Arguments::set_g1_gc_flags() { |
|
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|
1281 assert(UseG1GC, "Error"); |
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1282 // G1 is a server collector, setup the heap sizes accordingly. |
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1283 set_server_heap_size(); |
|
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1284 #ifdef COMPILER1 |
|
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1285 FastTLABRefill = false; |
|
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|
1286 #endif |
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1287 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1288 Abstract_VM_Version::parallel_worker_threads()); |
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1289 if (ParallelGCThreads == 0) { |
|
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|
1290 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1291 Abstract_VM_Version::parallel_worker_threads()); |
|
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1292 } |
|
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|
1293 no_shared_spaces(); |
| 751 | 1294 |
| 1295 // Set the maximum pause time goal to be a reasonable default. | |
| 1296 if (FLAG_IS_DEFAULT(MaxGCPauseMillis)) { | |
| 1297 FLAG_SET_DEFAULT(MaxGCPauseMillis, 200); | |
| 1298 } | |
|
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1299 } |
|
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|
1300 |
|
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|
1301 void Arguments::set_server_heap_size() { |
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1302 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
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1303 const uint64_t reasonable_fraction = |
|
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|
1304 os::physical_memory() / DefaultMaxRAMFraction; |
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1305 const uint64_t maximum_size = (uint64_t) |
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1306 (FLAG_IS_DEFAULT(DefaultMaxRAM) && UseCompressedOops ? |
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1307 MIN2(max_heap_for_compressed_oops(), DefaultMaxRAM) : |
|
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|
1308 DefaultMaxRAM); |
|
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|
1309 size_t reasonable_max = |
|
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|
1310 (size_t) os::allocatable_physical_memory(reasonable_fraction); |
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1311 if (reasonable_max > maximum_size) { |
|
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|
1312 reasonable_max = maximum_size; |
|
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1313 } |
|
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1314 if (PrintGCDetails && Verbose) { |
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1315 // Cannot use gclog_or_tty yet. |
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1316 tty->print_cr(" Max heap size for server class platform " |
|
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|
1317 SIZE_FORMAT, reasonable_max); |
|
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|
1318 } |
|
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1319 // If the initial_heap_size has not been set with -Xms, |
|
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1320 // then set it as fraction of size of physical memory |
|
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1321 // respecting the maximum and minimum sizes of the heap. |
|
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1322 if (initial_heap_size() == 0) { |
|
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1323 const uint64_t reasonable_initial_fraction = |
|
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1324 os::physical_memory() / DefaultInitialRAMFraction; |
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1325 const size_t reasonable_initial = |
|
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|
1326 (size_t) os::allocatable_physical_memory(reasonable_initial_fraction); |
|
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1327 const size_t minimum_size = NewSize + OldSize; |
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1328 set_initial_heap_size(MAX2(MIN2(reasonable_initial, reasonable_max), |
|
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1329 minimum_size)); |
|
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1330 // Currently the minimum size and the initial heap sizes are the same. |
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1331 set_min_heap_size(initial_heap_size()); |
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1332 if (PrintGCDetails && Verbose) { |
|
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1333 // Cannot use gclog_or_tty yet. |
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1334 tty->print_cr(" Initial heap size for server class platform " |
|
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|
1335 SIZE_FORMAT, initial_heap_size()); |
|
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|
1336 } |
|
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1337 } else { |
|
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1338 // A minimum size was specified on the command line. Be sure |
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1339 // that the maximum size is consistent. |
|
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1340 if (initial_heap_size() > reasonable_max) { |
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1341 reasonable_max = initial_heap_size(); |
|
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1342 } |
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1343 } |
|
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1344 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx) reasonable_max); |
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1345 } |
|
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1346 } |
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1347 |
| 0 | 1348 // This must be called after ergonomics because we want bytecode rewriting |
| 1349 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1350 void Arguments::set_bytecode_flags() { | |
| 1351 // Better not attempt to store into a read-only space. | |
| 1352 if (UseSharedSpaces) { | |
| 1353 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1354 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1355 } | |
| 1356 | |
| 1357 if (!RewriteBytecodes) { | |
| 1358 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1359 } | |
| 1360 } | |
| 1361 | |
| 1362 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1363 void Arguments::set_aggressive_opts_flags() { | |
|
17
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|
1364 #ifdef COMPILER2 |
|
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1365 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
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1366 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
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|
1367 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
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|
1368 } |
|
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|
1369 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
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|
1370 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
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|
1371 } |
|
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|
1372 |
|
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|
1373 // Feed the cache size setting into the JDK |
|
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|
1374 char buffer[1024]; |
|
513
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|
1375 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
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|
1376 add_property(buffer); |
|
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1377 } |
| 65 | 1378 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
| 1379 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
| 1380 } | |
|
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1381 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
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1382 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
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1383 } |
|
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1384 #endif |
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1385 |
| 0 | 1386 if (AggressiveOpts) { |
| 61 | 1387 // Sample flag setting code |
| 1388 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1389 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1390 // } | |
| 0 | 1391 } |
| 1392 } | |
| 1393 | |
| 1394 //=========================================================================================================== | |
| 1395 // Parsing of java.compiler property | |
| 1396 | |
| 1397 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1398 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1399 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1400 // is also specified. | |
| 1401 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1402 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1403 } | |
| 1404 } | |
| 1405 | |
| 1406 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1407 _sun_java_launcher = strdup(launcher); | |
| 1408 } | |
| 1409 | |
| 1410 bool Arguments::created_by_java_launcher() { | |
| 1411 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1412 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1413 } | |
| 1414 | |
| 1415 //=========================================================================================================== | |
| 1416 // Parsing of main arguments | |
| 1417 | |
| 1418 bool Arguments::verify_percentage(uintx value, const char* name) { | |
| 1419 if (value <= 100) { | |
| 1420 return true; | |
| 1421 } | |
| 1422 jio_fprintf(defaultStream::error_stream(), | |
| 1423 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1424 name, value); | |
| 1425 return false; | |
| 1426 } | |
| 1427 | |
| 1428 static void set_serial_gc_flags() { | |
| 1429 FLAG_SET_DEFAULT(UseSerialGC, true); | |
| 1430 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1431 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
| 1432 FLAG_SET_DEFAULT(UseParallelGC, false); | |
| 1433 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
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1434 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1435 } |
| 1436 | |
| 1437 static bool verify_serial_gc_flags() { | |
| 1438 return (UseSerialGC && | |
|
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1439 !(UseParNewGC || UseConcMarkSweepGC || UseG1GC || |
|
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1440 UseParallelGC || UseParallelOldGC)); |
| 0 | 1441 } |
| 1442 | |
|
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1443 // Check consistency of GC selection |
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1444 bool Arguments::check_gc_consistency() { |
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1445 bool status = true; |
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1446 // Ensure that the user has not selected conflicting sets |
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1447 // of collectors. [Note: this check is merely a user convenience; |
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1448 // collectors over-ride each other so that only a non-conflicting |
|
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1449 // set is selected; however what the user gets is not what they |
|
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1450 // may have expected from the combination they asked for. It's |
|
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1451 // better to reduce user confusion by not allowing them to |
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1452 // select conflicting combinations. |
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1453 uint i = 0; |
|
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1454 if (UseSerialGC) i++; |
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1455 if (UseConcMarkSweepGC || UseParNewGC) i++; |
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1456 if (UseParallelGC || UseParallelOldGC) i++; |
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1457 if (i > 1) { |
|
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1458 jio_fprintf(defaultStream::error_stream(), |
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1459 "Conflicting collector combinations in option list; " |
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1460 "please refer to the release notes for the combinations " |
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1461 "allowed\n"); |
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1462 status = false; |
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1463 } |
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1464 |
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1465 return status; |
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1466 } |
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1467 |
| 0 | 1468 // Check the consistency of vm_init_args |
| 1469 bool Arguments::check_vm_args_consistency() { | |
| 1470 // Method for adding checks for flag consistency. | |
| 1471 // The intent is to warn the user of all possible conflicts, | |
| 1472 // before returning an error. | |
| 1473 // Note: Needs platform-dependent factoring. | |
| 1474 bool status = true; | |
| 1475 | |
| 1476 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1477 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1478 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1479 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1480 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1481 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1482 extern void VM_Version_init(); | |
| 1483 VM_Version_init(); | |
| 1484 if (!VM_Version::has_v9()) { | |
| 1485 jio_fprintf(defaultStream::error_stream(), | |
| 1486 "V8 Machine detected, Server requires V9\n"); | |
| 1487 status = false; | |
| 1488 } | |
| 1489 #endif /* COMPILER2 && SPARC */ | |
| 1490 | |
| 1491 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1492 // builds so the cost of stack banging can be measured. | |
| 1493 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1494 if (!UseBoundThreads && !UseStackBanging) { | |
| 1495 jio_fprintf(defaultStream::error_stream(), | |
| 1496 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1497 | |
| 1498 status = false; | |
| 1499 } | |
| 1500 #endif | |
| 1501 | |
| 1502 if (TLABRefillWasteFraction == 0) { | |
| 1503 jio_fprintf(defaultStream::error_stream(), | |
| 1504 "TLABRefillWasteFraction should be a denominator, " | |
| 1505 "not " SIZE_FORMAT "\n", | |
| 1506 TLABRefillWasteFraction); | |
| 1507 status = false; | |
| 1508 } | |
| 1509 | |
|
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1510 status = status && verify_percentage(MaxLiveObjectEvacuationRatio, |
| 0 | 1511 "MaxLiveObjectEvacuationRatio"); |
|
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1512 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1513 "AdaptiveSizePolicyWeight"); |
|
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1514 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
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1515 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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1516 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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1517 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1518 |
| 1519 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1520 jio_fprintf(defaultStream::error_stream(), | |
| 1521 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1522 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1523 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1524 status = false; | |
| 1525 } | |
| 1526 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1527 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1528 | |
| 1529 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1530 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1531 } | |
| 1532 | |
|
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1533 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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1534 // Settings to encourage splitting. |
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1535 if (!FLAG_IS_CMDLINE(NewRatio)) { |
|
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1536 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
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1537 } |
|
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1538 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
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1539 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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1540 } |
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1541 } |
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1542 |
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1543 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1544 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1545 if (GCTimeLimit == 100) { |
| 1546 // Turn off gc-overhead-limit-exceeded checks | |
| 1547 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1548 } | |
| 1549 | |
|
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1550 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1551 |
| 1552 // Check user specified sharing option conflict with Parallel GC | |
|
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1553 bool cannot_share = (UseConcMarkSweepGC || UseG1GC || UseParNewGC || |
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1554 UseParallelGC || UseParallelOldGC || |
| 0 | 1555 SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages)); |
| 1556 | |
| 1557 if (cannot_share) { | |
| 1558 // Either force sharing on by forcing the other options off, or | |
| 1559 // force sharing off. | |
| 1560 if (DumpSharedSpaces || ForceSharedSpaces) { | |
| 1561 set_serial_gc_flags(); | |
| 1562 FLAG_SET_DEFAULT(SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages), false); | |
| 1563 } else { | |
| 1564 no_shared_spaces(); | |
| 1565 } | |
| 1566 } | |
| 1567 | |
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1568 status = status && check_gc_consistency(); |
| 0 | 1569 |
| 1570 if (_has_alloc_profile) { | |
| 1571 if (UseParallelGC || UseParallelOldGC) { | |
| 1572 jio_fprintf(defaultStream::error_stream(), | |
| 1573 "error: invalid argument combination.\n" | |
| 1574 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1575 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1576 status = false; | |
| 1577 } | |
| 1578 if (UseConcMarkSweepGC) { | |
| 1579 jio_fprintf(defaultStream::error_stream(), | |
| 1580 "error: invalid argument combination.\n" | |
| 1581 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1582 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1583 status = false; | |
| 1584 } | |
| 1585 } | |
| 1586 | |
| 1587 if (CMSIncrementalMode) { | |
| 1588 if (!UseConcMarkSweepGC) { | |
| 1589 jio_fprintf(defaultStream::error_stream(), | |
| 1590 "error: invalid argument combination.\n" | |
| 1591 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1592 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1593 status = false; | |
| 1594 } else { | |
|
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1595 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1596 "CMSIncrementalDutyCycle"); |
|
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1597 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1598 "CMSIncrementalDutyCycleMin"); |
|
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1599 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1600 "CMSIncrementalSafetyFactor"); |
|
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1601 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1602 "CMSIncrementalOffset"); |
|
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1603 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1604 "CMSExpAvgFactor"); |
| 1605 // If it was not set on the command line, set | |
| 1606 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1607 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1608 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1609 } | |
| 1610 } | |
| 1611 } | |
| 1612 | |
| 1613 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1614 // insists that we hold the requisite locks so that the iteration is | |
| 1615 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1616 // yet have a good way of acquiring and releasing these locks, | |
| 1617 // which are not visible at the CollectedHeap level. We want to | |
| 1618 // be able to acquire these locks and then do the iteration rather | |
| 1619 // than just disable the lock verification. This will be fixed under | |
| 1620 // bug 4788986. | |
| 1621 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1622 if (VerifyGCStartAt == 0) { | |
| 1623 warning("Heap verification at start-up disabled " | |
| 1624 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1625 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1626 } | |
| 1627 if (VerifyBeforeExit) { | |
| 1628 warning("Heap verification at shutdown disabled " | |
| 1629 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1630 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1631 } | |
| 1632 } | |
| 1633 | |
| 1634 // Note: only executed in non-PRODUCT mode | |
| 1635 if (!UseAsyncConcMarkSweepGC && | |
| 1636 (ExplicitGCInvokesConcurrent || | |
| 1637 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1638 jio_fprintf(defaultStream::error_stream(), | |
| 1639 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1640 " with -UseAsyncConcMarkSweepGC"); | |
| 1641 status = false; | |
| 1642 } | |
| 1643 | |
| 1644 return status; | |
| 1645 } | |
| 1646 | |
| 1647 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1648 const char* option_type) { | |
| 1649 if (ignore) return false; | |
| 1650 | |
| 1651 const char* spacer = " "; | |
| 1652 if (option_type == NULL) { | |
| 1653 option_type = ++spacer; // Set both to the empty string. | |
| 1654 } | |
| 1655 | |
| 1656 if (os::obsolete_option(option)) { | |
| 1657 jio_fprintf(defaultStream::error_stream(), | |
| 1658 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1659 option->optionString); | |
| 1660 return false; | |
| 1661 } else { | |
| 1662 jio_fprintf(defaultStream::error_stream(), | |
| 1663 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 1664 option->optionString); | |
| 1665 return true; | |
| 1666 } | |
| 1667 } | |
| 1668 | |
| 1669 static const char* user_assertion_options[] = { | |
| 1670 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 1671 }; | |
| 1672 | |
| 1673 static const char* system_assertion_options[] = { | |
| 1674 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 1675 }; | |
| 1676 | |
| 1677 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 1678 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 1679 // the option must match exactly. | |
| 1680 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 1681 bool tail_allowed) { | |
| 1682 for (/* empty */; *names != NULL; ++names) { | |
| 1683 if (match_option(option, *names, tail)) { | |
| 1684 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 1685 return true; | |
| 1686 } | |
| 1687 } | |
| 1688 } | |
| 1689 return false; | |
| 1690 } | |
| 1691 | |
| 1692 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, | |
|
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1693 julong* long_arg, |
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1694 julong min_size) { |
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1695 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 1696 return check_memory_size(*long_arg, min_size); |
| 1697 } | |
| 1698 | |
| 1699 // Parse JavaVMInitArgs structure | |
| 1700 | |
| 1701 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 1702 // For components of the system classpath. | |
| 1703 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 1704 bool scp_assembly_required = false; | |
| 1705 | |
| 1706 // Save default settings for some mode flags | |
| 1707 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 1708 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 1709 Arguments::_ClipInlining = ClipInlining; | |
| 1710 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 1711 Arguments::_Tier2CompileThreshold = Tier2CompileThreshold; | |
| 1712 | |
| 1713 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
| 1714 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 1715 if (result != JNI_OK) { | |
| 1716 return result; | |
| 1717 } | |
| 1718 | |
| 1719 // Parse JavaVMInitArgs structure passed in | |
| 1720 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 1721 if (result != JNI_OK) { | |
| 1722 return result; | |
| 1723 } | |
| 1724 | |
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1725 if (AggressiveOpts) { |
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1726 // Insert alt-rt.jar between user-specified bootclasspath |
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1727 // prefix and the default bootclasspath. os::set_boot_path() |
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1728 // uses meta_index_dir as the default bootclasspath directory. |
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1729 const char* altclasses_jar = "alt-rt.jar"; |
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1730 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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1731 strlen(altclasses_jar); |
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1732 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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1733 strcpy(altclasses_path, get_meta_index_dir()); |
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1734 strcat(altclasses_path, altclasses_jar); |
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1735 scp.add_suffix_to_prefix(altclasses_path); |
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1736 scp_assembly_required = true; |
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1737 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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1738 } |
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1739 |
| 0 | 1740 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 1741 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 1742 if (result != JNI_OK) { | |
| 1743 return result; | |
| 1744 } | |
| 1745 | |
| 1746 // Do final processing now that all arguments have been parsed | |
| 1747 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 1748 if (result != JNI_OK) { | |
| 1749 return result; | |
| 1750 } | |
| 1751 | |
| 1752 return JNI_OK; | |
| 1753 } | |
| 1754 | |
| 1755 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 1756 SysClassPath* scp_p, | |
| 1757 bool* scp_assembly_required_p, | |
| 1758 FlagValueOrigin origin) { | |
| 1759 // Remaining part of option string | |
| 1760 const char* tail; | |
| 1761 | |
| 1762 // iterate over arguments | |
| 1763 for (int index = 0; index < args->nOptions; index++) { | |
| 1764 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 1765 | |
| 1766 const JavaVMOption* option = args->options + index; | |
| 1767 | |
| 1768 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 1769 !match_option(option, "-Dsun.java.command", &tail) && | |
| 1770 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 1771 | |
| 1772 // add all jvm options to the jvm_args string. This string | |
| 1773 // is used later to set the java.vm.args PerfData string constant. | |
| 1774 // the -Djava.class.path and the -Dsun.java.command options are | |
| 1775 // omitted from jvm_args string as each have their own PerfData | |
| 1776 // string constant object. | |
| 1777 build_jvm_args(option->optionString); | |
| 1778 } | |
| 1779 | |
| 1780 // -verbose:[class/gc/jni] | |
| 1781 if (match_option(option, "-verbose", &tail)) { | |
| 1782 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 1783 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 1784 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 1785 } else if (!strcmp(tail, ":gc")) { | |
| 1786 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 1787 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 1788 } else if (!strcmp(tail, ":jni")) { | |
| 1789 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 1790 } | |
| 1791 // -da / -ea / -disableassertions / -enableassertions | |
| 1792 // These accept an optional class/package name separated by a colon, e.g., | |
| 1793 // -da:java.lang.Thread. | |
| 1794 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 1795 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 1796 if (*tail == '\0') { | |
| 1797 JavaAssertions::setUserClassDefault(enable); | |
| 1798 } else { | |
| 1799 assert(*tail == ':', "bogus match by match_option()"); | |
| 1800 JavaAssertions::addOption(tail + 1, enable); | |
| 1801 } | |
| 1802 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 1803 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 1804 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 1805 JavaAssertions::setSystemClassDefault(enable); | |
| 1806 // -bootclasspath: | |
| 1807 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 1808 scp_p->reset_path(tail); | |
| 1809 *scp_assembly_required_p = true; | |
| 1810 // -bootclasspath/a: | |
| 1811 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 1812 scp_p->add_suffix(tail); | |
| 1813 *scp_assembly_required_p = true; | |
| 1814 // -bootclasspath/p: | |
| 1815 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 1816 scp_p->add_prefix(tail); | |
| 1817 *scp_assembly_required_p = true; | |
| 1818 // -Xrun | |
| 1819 } else if (match_option(option, "-Xrun", &tail)) { | |
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1820 if (tail != NULL) { |
| 0 | 1821 const char* pos = strchr(tail, ':'); |
| 1822 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 1823 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 1824 name[len] = '\0'; | |
| 1825 | |
| 1826 char *options = NULL; | |
| 1827 if(pos != NULL) { | |
| 1828 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 1829 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 1830 } | |
| 1831 #ifdef JVMTI_KERNEL | |
| 1832 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 1833 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 1834 } else | |
| 1835 #endif // JVMTI_KERNEL | |
| 1836 add_init_library(name, options); | |
| 1837 } | |
| 1838 // -agentlib and -agentpath | |
| 1839 } else if (match_option(option, "-agentlib:", &tail) || | |
| 1840 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 1841 if(tail != NULL) { | |
| 1842 const char* pos = strchr(tail, '='); | |
| 1843 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 1844 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 1845 name[len] = '\0'; | |
| 1846 | |
| 1847 char *options = NULL; | |
| 1848 if(pos != NULL) { | |
| 1849 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 1850 } | |
| 1851 #ifdef JVMTI_KERNEL | |
| 1852 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 1853 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 1854 } else | |
| 1855 #endif // JVMTI_KERNEL | |
| 1856 add_init_agent(name, options, is_absolute_path); | |
| 1857 | |
| 1858 } | |
| 1859 // -javaagent | |
| 1860 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 1861 if(tail != NULL) { | |
| 1862 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 1863 add_init_agent("instrument", options, false); | |
| 1864 } | |
| 1865 // -Xnoclassgc | |
| 1866 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 1867 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 1868 // -Xincgc: i-CMS | |
| 1869 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 1870 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 1871 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 1872 // -Xnoincgc: no i-CMS | |
| 1873 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 1874 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 1875 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 1876 // -Xconcgc | |
| 1877 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 1878 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 1879 // -Xnoconcgc | |
| 1880 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 1881 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 1882 // -Xbatch | |
| 1883 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 1884 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 1885 // -Xmn for compatibility with other JVM vendors | |
| 1886 } else if (match_option(option, "-Xmn", &tail)) { | |
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1887 julong long_initial_eden_size = 0; |
| 0 | 1888 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 1889 if (errcode != arg_in_range) { | |
| 1890 jio_fprintf(defaultStream::error_stream(), | |
| 1891 "Invalid initial eden size: %s\n", option->optionString); | |
| 1892 describe_range_error(errcode); | |
| 1893 return JNI_EINVAL; | |
| 1894 } | |
| 1895 FLAG_SET_CMDLINE(uintx, MaxNewSize, (size_t) long_initial_eden_size); | |
| 1896 FLAG_SET_CMDLINE(uintx, NewSize, (size_t) long_initial_eden_size); | |
| 1897 // -Xms | |
| 1898 } else if (match_option(option, "-Xms", &tail)) { | |
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1899 julong long_initial_heap_size = 0; |
| 0 | 1900 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 1901 if (errcode != arg_in_range) { | |
| 1902 jio_fprintf(defaultStream::error_stream(), | |
| 1903 "Invalid initial heap size: %s\n", option->optionString); | |
| 1904 describe_range_error(errcode); | |
| 1905 return JNI_EINVAL; | |
| 1906 } | |
| 1907 set_initial_heap_size((size_t) long_initial_heap_size); | |
| 1908 // Currently the minimum size and the initial heap sizes are the same. | |
| 1909 set_min_heap_size(initial_heap_size()); | |
| 1910 // -Xmx | |
| 1911 } else if (match_option(option, "-Xmx", &tail)) { | |
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1912 julong long_max_heap_size = 0; |
| 0 | 1913 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 1914 if (errcode != arg_in_range) { | |
| 1915 jio_fprintf(defaultStream::error_stream(), | |
| 1916 "Invalid maximum heap size: %s\n", option->optionString); | |
| 1917 describe_range_error(errcode); | |
| 1918 return JNI_EINVAL; | |
| 1919 } | |
| 1920 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (size_t) long_max_heap_size); | |
| 1921 // Xmaxf | |
| 1922 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 1923 int maxf = (int)(atof(tail) * 100); | |
| 1924 if (maxf < 0 || maxf > 100) { | |
| 1925 jio_fprintf(defaultStream::error_stream(), | |
| 1926 "Bad max heap free percentage size: %s\n", | |
| 1927 option->optionString); | |
| 1928 return JNI_EINVAL; | |
| 1929 } else { | |
| 1930 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 1931 } | |
| 1932 // Xminf | |
| 1933 } else if (match_option(option, "-Xminf", &tail)) { | |
| 1934 int minf = (int)(atof(tail) * 100); | |
| 1935 if (minf < 0 || minf > 100) { | |
| 1936 jio_fprintf(defaultStream::error_stream(), | |
| 1937 "Bad min heap free percentage size: %s\n", | |
| 1938 option->optionString); | |
| 1939 return JNI_EINVAL; | |
| 1940 } else { | |
| 1941 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 1942 } | |
| 1943 // -Xss | |
| 1944 } else if (match_option(option, "-Xss", &tail)) { | |
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1945 julong long_ThreadStackSize = 0; |
| 0 | 1946 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 1947 if (errcode != arg_in_range) { | |
| 1948 jio_fprintf(defaultStream::error_stream(), | |
| 1949 "Invalid thread stack size: %s\n", option->optionString); | |
| 1950 describe_range_error(errcode); | |
| 1951 return JNI_EINVAL; | |
| 1952 } | |
| 1953 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 1954 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 1955 round_to((int)long_ThreadStackSize, K) / K); | |
| 1956 // -Xoss | |
| 1957 } else if (match_option(option, "-Xoss", &tail)) { | |
| 1958 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 1959 // -Xmaxjitcodesize | |
| 1960 } else if (match_option(option, "-Xmaxjitcodesize", &tail)) { | |
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1961 julong long_ReservedCodeCacheSize = 0; |
| 0 | 1962 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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1963 (size_t)InitialCodeCacheSize); |
| 0 | 1964 if (errcode != arg_in_range) { |
| 1965 jio_fprintf(defaultStream::error_stream(), | |
| 1966 "Invalid maximum code cache size: %s\n", | |
| 1967 option->optionString); | |
| 1968 describe_range_error(errcode); | |
| 1969 return JNI_EINVAL; | |
| 1970 } | |
| 1971 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 1972 // -green | |
| 1973 } else if (match_option(option, "-green", &tail)) { | |
| 1974 jio_fprintf(defaultStream::error_stream(), | |
| 1975 "Green threads support not available\n"); | |
| 1976 return JNI_EINVAL; | |
| 1977 // -native | |
| 1978 } else if (match_option(option, "-native", &tail)) { | |
| 1979 // HotSpot always uses native threads, ignore silently for compatibility | |
| 1980 // -Xsqnopause | |
| 1981 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 1982 // EVM option, ignore silently for compatibility | |
| 1983 // -Xrs | |
| 1984 } else if (match_option(option, "-Xrs", &tail)) { | |
| 1985 // Classic/EVM option, new functionality | |
| 1986 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 1987 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 1988 // change default internal VM signals used - lower case for back compat | |
| 1989 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 1990 // -Xoptimize | |
| 1991 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 1992 // EVM option, ignore silently for compatibility | |
| 1993 // -Xprof | |
| 1994 } else if (match_option(option, "-Xprof", &tail)) { | |
| 1995 #ifndef FPROF_KERNEL | |
| 1996 _has_profile = true; | |
| 1997 #else // FPROF_KERNEL | |
| 1998 // do we have to exit? | |
| 1999 warning("Kernel VM does not support flat profiling."); | |
| 2000 #endif // FPROF_KERNEL | |
| 2001 // -Xaprof | |
| 2002 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2003 _has_alloc_profile = true; | |
| 2004 // -Xconcurrentio | |
| 2005 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2006 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2007 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2008 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2009 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2010 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2011 | |
| 2012 // -Xinternalversion | |
| 2013 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2014 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2015 VM_Version::internal_vm_info_string()); | |
| 2016 vm_exit(0); | |
| 2017 #ifndef PRODUCT | |
| 2018 // -Xprintflags | |
| 2019 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 2020 CommandLineFlags::printFlags(); | |
| 2021 vm_exit(0); | |
| 2022 #endif | |
| 2023 // -D | |
| 2024 } else if (match_option(option, "-D", &tail)) { | |
| 2025 if (!add_property(tail)) { | |
| 2026 return JNI_ENOMEM; | |
| 2027 } | |
| 2028 // Out of the box management support | |
| 2029 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2030 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2031 } | |
| 2032 // -Xint | |
| 2033 } else if (match_option(option, "-Xint", &tail)) { | |
| 2034 set_mode_flags(_int); | |
| 2035 // -Xmixed | |
| 2036 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2037 set_mode_flags(_mixed); | |
| 2038 // -Xcomp | |
| 2039 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2040 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2041 set_mode_flags(_comp); | |
| 2042 | |
| 2043 // -Xshare:dump | |
| 2044 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2045 #ifdef TIERED | |
| 2046 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2047 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2048 #elif defined(COMPILER2) | |
| 2049 vm_exit_during_initialization( | |
| 2050 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2051 #elif defined(KERNEL) | |
| 2052 vm_exit_during_initialization( | |
| 2053 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2054 #else | |
| 2055 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2056 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2057 #endif | |
| 2058 // -Xshare:on | |
| 2059 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2060 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2061 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2062 #ifdef TIERED | |
| 2063 FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true); | |
| 2064 #endif // TIERED | |
| 2065 // -Xshare:auto | |
| 2066 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2067 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2068 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2069 // -Xshare:off | |
| 2070 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2071 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2072 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2073 | |
| 2074 // -Xverify | |
| 2075 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2076 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2077 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2078 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2079 } else if (strcmp(tail, ":remote") == 0) { | |
| 2080 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2081 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2082 } else if (strcmp(tail, ":none") == 0) { | |
| 2083 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2084 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2085 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2086 return JNI_EINVAL; | |
| 2087 } | |
| 2088 // -Xdebug | |
| 2089 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2090 // note this flag has been used, then ignore | |
| 2091 set_xdebug_mode(true); | |
| 2092 // -Xnoagent | |
| 2093 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2094 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2095 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2096 // Bind user level threads to kernel threads (Solaris only) | |
| 2097 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2098 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2099 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2100 // ostream_init_log(), when called will use this filename | |
| 2101 // to initialize a fileStream. | |
| 2102 _gc_log_filename = strdup(tail); | |
| 2103 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2104 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2105 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2106 | |
| 2107 // JNI hooks | |
| 2108 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2109 if (!strcmp(tail, ":jni")) { | |
| 2110 CheckJNICalls = true; | |
| 2111 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2112 "check")) { | |
| 2113 return JNI_EINVAL; | |
| 2114 } | |
| 2115 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2116 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2117 } else if (match_option(option, "exit", &tail)) { | |
| 2118 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2119 } else if (match_option(option, "abort", &tail)) { | |
| 2120 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2121 // -XX:+AggressiveHeap | |
| 2122 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2123 | |
| 2124 // This option inspects the machine and attempts to set various | |
| 2125 // parameters to be optimal for long-running, memory allocation | |
| 2126 // intensive jobs. It is intended for machines with large | |
| 2127 // amounts of cpu and memory. | |
| 2128 | |
| 2129 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2130 // VM, but we may not be able to represent the total physical memory | |
| 2131 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2132 // Thus, we need to make sure we're using a julong for intermediate | |
| 2133 // calculations. | |
| 2134 julong initHeapSize; | |
| 2135 julong total_memory = os::physical_memory(); | |
| 2136 | |
| 2137 if (total_memory < (julong)256*M) { | |
| 2138 jio_fprintf(defaultStream::error_stream(), | |
| 2139 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2140 vm_exit(1); | |
| 2141 } | |
| 2142 | |
| 2143 // The heap size is half of available memory, or (at most) | |
| 2144 // all of possible memory less 160mb (leaving room for the OS | |
| 2145 // when using ISM). This is the maximum; because adaptive sizing | |
| 2146 // is turned on below, the actual space used may be smaller. | |
| 2147 | |
| 2148 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2149 total_memory - (julong)160*M); | |
| 2150 | |
| 2151 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2152 // process space. The 64bit VM version of this function is a nop. | |
| 2153 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2154 | |
| 2155 // The perm gen is separate but contiguous with the | |
| 2156 // object heap (and is reserved with it) so subtract it | |
| 2157 // from the heap size. | |
| 2158 if (initHeapSize > MaxPermSize) { | |
| 2159 initHeapSize = initHeapSize - MaxPermSize; | |
| 2160 } else { | |
| 2161 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2162 } | |
| 2163 | |
| 2164 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2165 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 2166 set_initial_heap_size(MaxHeapSize); | |
| 2167 // Currently the minimum size and the initial heap sizes are the same. | |
| 2168 set_min_heap_size(initial_heap_size()); | |
| 2169 } | |
| 2170 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2171 // Make the young generation 3/8ths of the total heap. | |
| 2172 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2173 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2174 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2175 } | |
| 2176 | |
| 2177 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2178 | |
| 2179 // Increase some data structure sizes for efficiency | |
| 2180 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2181 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2182 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2183 | |
| 2184 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2185 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2186 // space per-gc-thread buffers. The default is 4kw. | |
| 2187 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2188 | |
| 2189 // OldPLABSize is the size of the buffers in the old gen that | |
| 2190 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2191 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2192 // The default size is 1kw. These buffers are rarely used, since the | |
| 2193 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2194 // are occasions when there's lots of live data in the young gen | |
| 2195 // and we end up promoting some of it. We don't have a definite | |
| 2196 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2197 // is that a bigger PLAB results in retaining something like the | |
| 2198 // original allocation order after promotion, which improves mutator | |
| 2199 // locality. A minor effect may be that larger PLABs reduce the | |
| 2200 // number of PLAB allocation events during gc. The value of 8kw | |
| 2201 // was arrived at by experimenting with specjbb. | |
| 2202 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2203 | |
| 2204 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
| 2205 // a more conservative which-method-do-I-compile policy when one | |
| 2206 // of the counters maintained by the interpreter trips. The | |
| 2207 // result is reduced startup time and improved specjbb and | |
| 2208 // alacrity performance. Zero is the default, but we set it | |
| 2209 // explicitly here in case the default changes. | |
| 2210 // See runtime/compilationPolicy.*. | |
| 2211 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
| 2212 | |
| 2213 // Enable parallel GC and adaptive generation sizing | |
| 2214 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
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2215 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2216 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2217 |
| 2218 // Encourage steady state memory management | |
| 2219 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2220 | |
| 2221 // This appears to improve mutator locality | |
| 2222 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2223 | |
| 2224 // Get around early Solaris scheduling bug | |
| 2225 // (affinity vs other jobs on system) | |
| 2226 // but disallow DR and offlining (5008695). | |
| 2227 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2228 | |
| 2229 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2230 // The last option must always win. | |
| 2231 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2232 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2233 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2234 // The last option must always win. | |
| 2235 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2236 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2237 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2238 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2239 jio_fprintf(defaultStream::error_stream(), | |
| 2240 "Please use CMSClassUnloadingEnabled in place of " | |
| 2241 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2242 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2243 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2244 jio_fprintf(defaultStream::error_stream(), | |
| 2245 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2246 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2247 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2248 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2249 jio_fprintf(defaultStream::error_stream(), | |
| 2250 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2251 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2252 // The TLE options are for compatibility with 1.3 and will be | |
| 2253 // removed without notice in a future release. These options | |
| 2254 // are not to be documented. | |
| 2255 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2256 // No longer used. | |
| 2257 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2258 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2259 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2260 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2261 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2262 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2263 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2264 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2265 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2266 // No longer used. | |
| 2267 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
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2268 julong long_tlab_size = 0; |
| 0 | 2269 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2270 if (errcode != arg_in_range) { | |
| 2271 jio_fprintf(defaultStream::error_stream(), | |
| 2272 "Invalid TLAB size: %s\n", option->optionString); | |
| 2273 describe_range_error(errcode); | |
| 2274 return JNI_EINVAL; | |
| 2275 } | |
| 2276 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2277 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2278 // No longer used. | |
| 2279 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2280 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2281 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2282 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2283 SOLARIS_ONLY( | |
| 2284 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2285 warning("-XX:+UsePermISM is obsolete."); | |
| 2286 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2287 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2288 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2289 ) | |
| 2290 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2291 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2292 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2293 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2294 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2295 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2296 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 2297 #ifdef SOLARIS | |
| 2298 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
| 2299 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2300 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2301 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 2302 #else // ndef SOLARIS | |
| 2303 jio_fprintf(defaultStream::error_stream(), | |
| 2304 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
| 2305 return JNI_EINVAL; | |
| 2306 #endif // ndef SOLARIS | |
| 2307 } else | |
| 2308 #ifdef ASSERT | |
| 2309 if (match_option(option, "-XX:+FullGCALot", &tail)) { | |
| 2310 FLAG_SET_CMDLINE(bool, FullGCALot, true); | |
| 2311 // disable scavenge before parallel mark-compact | |
| 2312 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2313 } else | |
| 2314 #endif | |
| 2315 if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { | |
| 2316 julong cms_blocks_to_claim = (julong)atol(tail); | |
| 2317 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2318 jio_fprintf(defaultStream::error_stream(), | |
| 2319 "Please use -XX:CMSParPromoteBlocksToClaim in place of " | |
| 2320 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); | |
| 2321 } else | |
| 2322 if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { | |
|
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|
2323 julong old_plab_size = 0; |
| 0 | 2324 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2325 if (errcode != arg_in_range) { | |
| 2326 jio_fprintf(defaultStream::error_stream(), | |
| 2327 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2328 describe_range_error(errcode); | |
| 2329 return JNI_EINVAL; | |
| 2330 } | |
|
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|
2331 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2332 jio_fprintf(defaultStream::error_stream(), |
| 2333 "Please use -XX:OldPLABSize in place of " | |
| 2334 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
| 2335 } else | |
| 2336 if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { | |
|
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|
2337 julong young_plab_size = 0; |
| 0 | 2338 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2339 if (errcode != arg_in_range) { | |
| 2340 jio_fprintf(defaultStream::error_stream(), | |
| 2341 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2342 describe_range_error(errcode); | |
| 2343 return JNI_EINVAL; | |
| 2344 } | |
|
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2345 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2346 jio_fprintf(defaultStream::error_stream(), |
| 2347 "Please use -XX:YoungPLABSize in place of " | |
| 2348 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 2349 } else | |
| 2350 if (match_option(option, "-XX:", &tail)) { // -XX:xxxx | |
| 2351 // Skip -XX:Flags= since that case has already been handled | |
| 2352 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2353 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2354 return JNI_EINVAL; | |
| 2355 } | |
| 2356 } | |
| 2357 // Unknown option | |
| 2358 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2359 return JNI_ERR; | |
| 2360 } | |
| 2361 } | |
|
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2362 // Change the default value for flags which have different default values |
|
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|
2363 // when working with older JDKs. |
|
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|
2364 if (JDK_Version::current().compare_major(6) <= 0 && |
|
171e581e8161
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|
2365 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
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|
2366 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
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|
2367 } |
| 0 | 2368 return JNI_OK; |
| 2369 } | |
| 2370 | |
| 2371 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2372 // This must be done after all -D arguments have been processed. | |
| 2373 scp_p->expand_endorsed(); | |
| 2374 | |
| 2375 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2376 // Assemble the bootclasspath elements into the final path. | |
| 2377 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2378 } | |
| 2379 | |
| 2380 // This must be done after all arguments have been processed. | |
| 2381 // java_compiler() true means set to "NONE" or empty. | |
| 2382 if (java_compiler() && !xdebug_mode()) { | |
| 2383 // For backwards compatibility, we switch to interpreted mode if | |
| 2384 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2385 // not specified. | |
| 2386 set_mode_flags(_int); | |
| 2387 } | |
| 2388 if (CompileThreshold == 0) { | |
| 2389 set_mode_flags(_int); | |
| 2390 } | |
| 2391 | |
| 2392 #ifdef TIERED | |
| 2393 // If we are using tiered compilation in the tiered vm then c1 will | |
| 2394 // do the profiling and we don't want to waste that time in the | |
| 2395 // interpreter. | |
| 2396 if (TieredCompilation) { | |
| 2397 ProfileInterpreter = false; | |
| 2398 } else { | |
| 2399 // Since we are running vanilla server we must adjust the compile threshold | |
| 2400 // unless the user has already adjusted it because the default threshold assumes | |
| 2401 // we will run tiered. | |
| 2402 | |
| 2403 if (FLAG_IS_DEFAULT(CompileThreshold)) { | |
| 2404 CompileThreshold = Tier2CompileThreshold; | |
| 2405 } | |
| 2406 } | |
| 2407 #endif // TIERED | |
| 2408 | |
| 2409 #ifndef COMPILER2 | |
| 2410 // Don't degrade server performance for footprint | |
| 2411 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2412 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2413 // No need for large granularity pages w/small heaps. | |
| 2414 // Note that large pages are enabled/disabled for both the | |
| 2415 // Java heap and the code cache. | |
| 2416 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2417 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2418 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2419 } | |
|
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|
2420 |
| 0 | 2421 #else |
| 2422 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2423 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2424 } | |
|
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2425 // Temporary disable bulk zeroing reduction with G1. See CR 6627983. |
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|
2426 if (UseG1GC) { |
|
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|
2427 FLAG_SET_DEFAULT(ReduceBulkZeroing, false); |
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2428 } |
| 0 | 2429 #endif |
| 2430 | |
| 2431 if (!check_vm_args_consistency()) { | |
| 2432 return JNI_ERR; | |
| 2433 } | |
| 2434 | |
| 2435 return JNI_OK; | |
| 2436 } | |
| 2437 | |
| 2438 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2439 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2440 scp_assembly_required_p); | |
| 2441 } | |
| 2442 | |
| 2443 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2444 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2445 scp_assembly_required_p); | |
| 2446 } | |
| 2447 | |
| 2448 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2449 const int N_MAX_OPTIONS = 64; | |
| 2450 const int OPTION_BUFFER_SIZE = 1024; | |
| 2451 char buffer[OPTION_BUFFER_SIZE]; | |
| 2452 | |
| 2453 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2454 // Don't check this variable if user has special privileges | |
| 2455 // (e.g. unix su command). | |
| 2456 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2457 !os::have_special_privileges()) { | |
| 2458 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2459 jio_fprintf(defaultStream::error_stream(), | |
| 2460 "Picked up %s: %s\n", name, buffer); | |
| 2461 char* rd = buffer; // pointer to the input string (rd) | |
| 2462 int i; | |
| 2463 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2464 while (isspace(*rd)) rd++; // skip whitespace | |
| 2465 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2466 | |
| 2467 // The output, option string, overwrites the input string. | |
| 2468 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2469 // input string (rd). | |
| 2470 char* wrt = rd; | |
| 2471 | |
| 2472 options[i++].optionString = wrt; // Fill in option | |
| 2473 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2474 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2475 int quote = *rd; // matching quote to look for | |
| 2476 rd++; // don't copy open quote | |
| 2477 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2478 if (*rd == 0) { // string termination means unmatched string | |
| 2479 jio_fprintf(defaultStream::error_stream(), | |
| 2480 "Unmatched quote in %s\n", name); | |
| 2481 return JNI_ERR; | |
| 2482 } | |
| 2483 *wrt++ = *rd++; // copy to option string | |
| 2484 } | |
| 2485 rd++; // don't copy close quote | |
| 2486 } else { | |
| 2487 *wrt++ = *rd++; // copy to option string | |
| 2488 } | |
| 2489 } | |
| 2490 // Need to check if we're done before writing a NULL, | |
| 2491 // because the write could be to the byte that rd is pointing to. | |
| 2492 if (*rd++ == 0) { | |
| 2493 *wrt = 0; | |
| 2494 break; | |
| 2495 } | |
| 2496 *wrt = 0; // Zero terminate option | |
| 2497 } | |
| 2498 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2499 JavaVMInitArgs vm_args; | |
| 2500 vm_args.version = JNI_VERSION_1_2; | |
| 2501 vm_args.options = options; | |
| 2502 vm_args.nOptions = i; | |
| 564 | 2503 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2504 |
| 2505 if (PrintVMOptions) { | |
| 2506 const char* tail; | |
| 2507 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2508 const JavaVMOption *option = vm_args.options + i; | |
| 2509 if (match_option(option, "-XX:", &tail)) { | |
| 2510 logOption(tail); | |
| 2511 } | |
| 2512 } | |
| 2513 } | |
| 2514 | |
| 2515 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2516 } | |
| 2517 return JNI_OK; | |
| 2518 } | |
| 2519 | |
| 2520 // Parse entry point called from JNI_CreateJavaVM | |
| 2521 | |
| 2522 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2523 | |
| 2524 // Sharing support | |
| 2525 // Construct the path to the archive | |
| 2526 char jvm_path[JVM_MAXPATHLEN]; | |
| 2527 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2528 #ifdef TIERED | |
| 2529 if (strstr(jvm_path, "client") != NULL) { | |
| 2530 force_client_mode = true; | |
| 2531 } | |
| 2532 #endif // TIERED | |
| 2533 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2534 if (end != NULL) *end = '\0'; | |
| 2535 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2536 strlen(os::file_separator()) + 20); | |
| 2537 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2538 strcpy(shared_archive_path, jvm_path); | |
| 2539 strcat(shared_archive_path, os::file_separator()); | |
| 2540 strcat(shared_archive_path, "classes"); | |
| 2541 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2542 strcat(shared_archive_path, ".jsa"); | |
| 2543 SharedArchivePath = shared_archive_path; | |
| 2544 | |
| 2545 // Remaining part of option string | |
| 2546 const char* tail; | |
| 2547 | |
| 2548 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2549 bool settings_file_specified = false; | |
| 564 | 2550 const char* flags_file; |
| 0 | 2551 int index; |
| 2552 for (index = 0; index < args->nOptions; index++) { | |
| 2553 const JavaVMOption *option = args->options + index; | |
| 2554 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2555 flags_file = tail; |
| 0 | 2556 settings_file_specified = true; |
| 2557 } | |
| 2558 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2559 PrintVMOptions = true; | |
| 2560 } | |
|
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2561 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
|
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|
2562 PrintVMOptions = false; |
|
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|
2563 } |
| 564 | 2564 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2565 IgnoreUnrecognizedVMOptions = true; | |
| 2566 } | |
| 2567 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2568 IgnoreUnrecognizedVMOptions = false; | |
| 2569 } | |
| 2570 } | |
| 2571 | |
| 2572 if (IgnoreUnrecognizedVMOptions) { | |
| 2573 // uncast const to modify the flag args->ignoreUnrecognized | |
| 2574 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 2575 } | |
| 2576 | |
| 2577 // Parse specified settings file | |
| 2578 if (settings_file_specified) { | |
| 2579 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 2580 return JNI_EINVAL; | |
| 2581 } | |
| 0 | 2582 } |
| 2583 | |
| 2584 // Parse default .hotspotrc settings file | |
| 2585 if (!settings_file_specified) { | |
| 2586 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 2587 return JNI_EINVAL; | |
| 2588 } | |
| 2589 } | |
| 2590 | |
| 2591 if (PrintVMOptions) { | |
| 2592 for (index = 0; index < args->nOptions; index++) { | |
| 2593 const JavaVMOption *option = args->options + index; | |
| 2594 if (match_option(option, "-XX:", &tail)) { | |
| 2595 logOption(tail); | |
| 2596 } | |
| 2597 } | |
| 2598 } | |
| 2599 | |
| 2600 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 2601 jint result = parse_vm_init_args(args); | |
| 2602 if (result != JNI_OK) { | |
| 2603 return result; | |
| 2604 } | |
| 2605 | |
|
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2606 // These are hacks until G1 is fully supported and tested |
|
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2607 // but lets you force -XX:+UseG1GC in PRT and get it where it (mostly) works |
|
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|
2608 if (UseG1GC) { |
|
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|
2609 if (UseConcMarkSweepGC || UseParNewGC || UseParallelGC || UseParallelOldGC || UseSerialGC) { |
|
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|
2610 #ifndef PRODUCT |
|
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|
2611 tty->print_cr("-XX:+UseG1GC is incompatible with other collectors, using UseG1GC"); |
|
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|
2612 #endif // PRODUCT |
|
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|
2613 UseConcMarkSweepGC = false; |
|
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|
2614 UseParNewGC = false; |
|
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|
2615 UseParallelGC = false; |
|
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|
2616 UseParallelOldGC = false; |
|
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|
2617 UseSerialGC = false; |
|
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diff
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|
2618 } |
|
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|
2619 no_shared_spaces(); |
|
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|
2620 } |
|
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|
2621 |
| 0 | 2622 #ifndef PRODUCT |
| 2623 if (TraceBytecodesAt != 0) { | |
| 2624 TraceBytecodes = true; | |
| 2625 } | |
| 2626 if (CountCompiledCalls) { | |
| 2627 if (UseCounterDecay) { | |
| 2628 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 2629 UseCounterDecay = false; | |
| 2630 } | |
| 2631 } | |
| 2632 #endif // PRODUCT | |
| 2633 | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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parents:
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diff
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|
2634 if (EnableInvokeDynamic && !EnableMethodHandles) { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
changeset
|
2635 if (!FLAG_IS_DEFAULT(EnableMethodHandles)) { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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712
diff
changeset
|
2636 warning("forcing EnableMethodHandles true to allow EnableInvokeDynamic"); |
|
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6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
2637 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
2638 EnableMethodHandles = true; |
|
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6655646: dynamic languages need dynamically linked call sites
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diff
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|
2639 } |
| 710 | 2640 if (EnableMethodHandles && !AnonymousClasses) { |
| 2641 if (!FLAG_IS_DEFAULT(AnonymousClasses)) { | |
| 2642 warning("forcing AnonymousClasses true to enable EnableMethodHandles"); | |
| 2643 } | |
| 2644 AnonymousClasses = true; | |
| 2645 } | |
| 2646 | |
| 0 | 2647 if (PrintGCDetails) { |
| 2648 // Turn on -verbose:gc options as well | |
| 2649 PrintGC = true; | |
| 2650 if (FLAG_IS_DEFAULT(TraceClassUnloading)) { | |
| 2651 TraceClassUnloading = true; | |
| 2652 } | |
| 2653 } | |
| 2654 | |
| 2655 #ifdef SERIALGC | |
| 2656 set_serial_gc_flags(); | |
| 2657 #endif // SERIALGC | |
| 2658 #ifdef KERNEL | |
| 2659 no_shared_spaces(); | |
| 2660 #endif // KERNEL | |
| 2661 | |
| 2662 // Set flags based on ergonomics. | |
| 2663 set_ergonomics_flags(); | |
| 2664 | |
|
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|
2665 // Check the GC selections again. |
|
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|
2666 if (!check_gc_consistency()) { |
|
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|
2667 return JNI_EINVAL; |
|
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|
2668 } |
|
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|
2669 |
|
13
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|
2670 if (UseParallelGC || UseParallelOldGC) { |
|
10
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|
2671 // Set some flags for ParallelGC if needed. |
|
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|
2672 set_parallel_gc_flags(); |
|
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|
2673 } else if (UseConcMarkSweepGC) { |
|
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|
2674 // Set some flags for CMS |
|
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|
2675 set_cms_and_parnew_gc_flags(); |
|
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|
2676 } else if (UseParNewGC) { |
|
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|
2677 // Set some flags for ParNew |
|
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|
2678 set_parnew_gc_flags(); |
|
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|
2679 } |
|
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2680 // Temporary; make the "if" an "else-if" before |
|
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2681 // we integrate G1. XXX |
|
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|
2682 if (UseG1GC) { |
|
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|
2683 // Set some flags for garbage-first, if needed. |
|
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|
2684 set_g1_gc_flags(); |
|
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|
2685 } |
|
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|
2686 |
| 0 | 2687 #ifdef SERIALGC |
| 2688 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 2689 #endif // SERIALGC | |
| 2690 | |
| 2691 // Set bytecode rewriting flags | |
| 2692 set_bytecode_flags(); | |
| 2693 | |
| 2694 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 2695 set_aggressive_opts_flags(); | |
| 2696 | |
| 2697 #ifdef CC_INTERP | |
| 2698 // Biased locking is not implemented with c++ interpreter | |
| 2699 FLAG_SET_DEFAULT(UseBiasedLocking, false); | |
| 2700 #endif /* CC_INTERP */ | |
| 2701 | |
|
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|
2702 #ifdef COMPILER2 |
|
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|
2703 if (!UseBiasedLocking || EmitSync != 0) { |
|
a1980da045cc
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|
2704 UseOptoBiasInlining = false; |
|
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|
2705 } |
|
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|
2706 #endif |
|
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|
2707 |
| 0 | 2708 if (PrintCommandLineFlags) { |
| 2709 CommandLineFlags::printSetFlags(); | |
| 2710 } | |
| 2711 | |
|
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|
2712 #ifdef ASSERT |
|
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|
2713 if (PrintFlagsFinal) { |
|
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|
2714 CommandLineFlags::printFlags(); |
|
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|
2715 } |
|
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|
2716 #endif |
|
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|
2717 |
| 0 | 2718 return JNI_OK; |
| 2719 } | |
| 2720 | |
| 2721 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 2722 int count = 0; | |
| 2723 while(pl != NULL) { | |
| 2724 count++; | |
| 2725 pl = pl->next(); | |
| 2726 } | |
| 2727 return count; | |
| 2728 } | |
| 2729 | |
| 2730 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 2731 assert(key != NULL, "just checking"); | |
| 2732 SystemProperty* prop; | |
| 2733 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 2734 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 2735 } | |
| 2736 return NULL; | |
| 2737 } | |
| 2738 | |
| 2739 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 2740 int count = 0; | |
| 2741 const char* ret_val = NULL; | |
| 2742 | |
| 2743 while(pl != NULL) { | |
| 2744 if(count >= index) { | |
| 2745 ret_val = pl->key(); | |
| 2746 break; | |
| 2747 } | |
| 2748 count++; | |
| 2749 pl = pl->next(); | |
| 2750 } | |
| 2751 | |
| 2752 return ret_val; | |
| 2753 } | |
| 2754 | |
| 2755 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 2756 int count = 0; | |
| 2757 char* ret_val = NULL; | |
| 2758 | |
| 2759 while(pl != NULL) { | |
| 2760 if(count >= index) { | |
| 2761 ret_val = pl->value(); | |
| 2762 break; | |
| 2763 } | |
| 2764 count++; | |
| 2765 pl = pl->next(); | |
| 2766 } | |
| 2767 | |
| 2768 return ret_val; | |
| 2769 } | |
| 2770 | |
| 2771 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 2772 SystemProperty* p = *plist; | |
| 2773 if (p == NULL) { | |
| 2774 *plist = new_p; | |
| 2775 } else { | |
| 2776 while (p->next() != NULL) { | |
| 2777 p = p->next(); | |
| 2778 } | |
| 2779 p->set_next(new_p); | |
| 2780 } | |
| 2781 } | |
| 2782 | |
| 2783 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 2784 if (plist == NULL) | |
| 2785 return; | |
| 2786 | |
| 2787 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 2788 PropertyList_add(plist, new_p); | |
| 2789 } | |
| 2790 | |
| 2791 // This add maintains unique property key in the list. | |
| 691 | 2792 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 2793 if (plist == NULL) |
| 2794 return; | |
| 2795 | |
| 2796 // If property key exist then update with new value. | |
| 2797 SystemProperty* prop; | |
| 2798 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 2799 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 2800 if (append) { |
| 2801 prop->append_value(v); | |
| 2802 } else { | |
| 2803 prop->set_value(v); | |
| 2804 } | |
| 0 | 2805 return; |
| 2806 } | |
| 2807 } | |
| 2808 | |
| 2809 PropertyList_add(plist, k, v); | |
| 2810 } | |
| 2811 | |
| 2812 #ifdef KERNEL | |
| 2813 char *Arguments::get_kernel_properties() { | |
| 2814 // Find properties starting with kernel and append them to string | |
| 2815 // We need to find out how long they are first because the URL's that they | |
| 2816 // might point to could get long. | |
| 2817 int length = 0; | |
| 2818 SystemProperty* prop; | |
| 2819 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 2820 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 2821 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 2822 } | |
| 2823 } | |
| 2824 // Add one for null terminator. | |
| 2825 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 2826 if (length != 0) { | |
| 2827 int pos = 0; | |
| 2828 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 2829 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 2830 jio_snprintf(&props[pos], length-pos, | |
| 2831 "-D%s=%s ", prop->key(), prop->value()); | |
| 2832 pos = strlen(props); | |
| 2833 } | |
| 2834 } | |
| 2835 } | |
| 2836 // null terminate props in case of null | |
| 2837 props[length] = '\0'; | |
| 2838 return props; | |
| 2839 } | |
| 2840 #endif // KERNEL | |
| 2841 | |
| 2842 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 2843 // Returns true if all of the source pointed by src has been copied over to | |
| 2844 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 2845 // Notes: | |
| 2846 // 1. If the length (buflen) of the destination buffer excluding the | |
| 2847 // NULL terminator character is not long enough for holding the expanded | |
| 2848 // pid characters, it also returns false instead of returning the partially | |
| 2849 // expanded one. | |
| 2850 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 2851 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 2852 char* buf, size_t buflen) { | |
| 2853 const char* p = src; | |
| 2854 char* b = buf; | |
| 2855 const char* src_end = &src[srclen]; | |
| 2856 char* buf_end = &buf[buflen - 1]; | |
| 2857 | |
| 2858 while (p < src_end && b < buf_end) { | |
| 2859 if (*p == '%') { | |
| 2860 switch (*(++p)) { | |
| 2861 case '%': // "%%" ==> "%" | |
| 2862 *b++ = *p++; | |
| 2863 break; | |
| 2864 case 'p': { // "%p" ==> current process id | |
| 2865 // buf_end points to the character before the last character so | |
| 2866 // that we could write '\0' to the end of the buffer. | |
| 2867 size_t buf_sz = buf_end - b + 1; | |
| 2868 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 2869 | |
| 2870 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 2871 // the expanded pid, returns false. | |
| 2872 if (ret < 0 || ret >= (int)buf_sz) { | |
| 2873 return false; | |
| 2874 } else { | |
| 2875 b += ret; | |
| 2876 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 2877 if (p == src_end && b == buf_end + 1) { | |
| 2878 // reach the end of the buffer. | |
| 2879 return true; | |
| 2880 } | |
| 2881 } | |
| 2882 p++; | |
| 2883 break; | |
| 2884 } | |
| 2885 default : | |
| 2886 *b++ = '%'; | |
| 2887 } | |
| 2888 } else { | |
| 2889 *b++ = *p++; | |
| 2890 } | |
| 2891 } | |
| 2892 *b = '\0'; | |
| 2893 return (p == src_end); // return false if not all of the source was copied | |
| 2894 } |