Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 1829:fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
Summary: Set upper limit 256 for ObjectAlignmentInBytes value.
Reviewed-by: never, iveresov
| author | kvn |
|---|---|
| date | Tue, 05 Oct 2010 08:57:20 -0700 |
| parents | 18c378513575 |
| children | 22e4420d19f7 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_arguments.cpp.incl" | |
| 27 | |
| 28 #define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp" | |
| 29 #define DEFAULT_JAVA_LAUNCHER "generic" | |
| 30 | |
| 31 char** Arguments::_jvm_flags_array = NULL; | |
| 32 int Arguments::_num_jvm_flags = 0; | |
| 33 char** Arguments::_jvm_args_array = NULL; | |
| 34 int Arguments::_num_jvm_args = 0; | |
| 35 char* Arguments::_java_command = NULL; | |
| 36 SystemProperty* Arguments::_system_properties = NULL; | |
| 37 const char* Arguments::_gc_log_filename = NULL; | |
| 38 bool Arguments::_has_profile = false; | |
| 39 bool Arguments::_has_alloc_profile = false; | |
| 40 uintx Arguments::_min_heap_size = 0; | |
| 41 Arguments::Mode Arguments::_mode = _mixed; | |
| 42 bool Arguments::_java_compiler = false; | |
| 43 bool Arguments::_xdebug_mode = false; | |
| 44 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 45 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 46 int Arguments::_sun_java_launcher_pid = -1; | |
| 47 | |
| 48 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 49 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 50 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 51 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 52 bool Arguments::_ClipInlining = ClipInlining; | |
| 53 | |
| 54 char* Arguments::SharedArchivePath = NULL; | |
| 55 | |
| 56 AgentLibraryList Arguments::_libraryList; | |
| 57 AgentLibraryList Arguments::_agentList; | |
| 58 | |
| 59 abort_hook_t Arguments::_abort_hook = NULL; | |
| 60 exit_hook_t Arguments::_exit_hook = NULL; | |
| 61 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 62 | |
| 63 | |
| 64 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 65 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 66 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 67 SystemProperty *Arguments::_java_library_path = NULL; | |
| 68 SystemProperty *Arguments::_java_home = NULL; | |
| 69 SystemProperty *Arguments::_java_class_path = NULL; | |
| 70 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
| 71 | |
| 72 char* Arguments::_meta_index_path = NULL; | |
| 73 char* Arguments::_meta_index_dir = NULL; | |
| 74 | |
| 75 static bool force_client_mode = false; | |
| 76 | |
| 77 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 78 | |
| 79 static bool match_option(const JavaVMOption *option, const char* name, | |
| 80 const char** tail) { | |
| 81 int len = (int)strlen(name); | |
| 82 if (strncmp(option->optionString, name, len) == 0) { | |
| 83 *tail = option->optionString + len; | |
| 84 return true; | |
| 85 } else { | |
| 86 return false; | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 static void logOption(const char* opt) { | |
| 91 if (PrintVMOptions) { | |
| 92 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 // Process java launcher properties. | |
| 97 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 98 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 99 // Must do this before setting up other system properties, | |
| 100 // as some of them may depend on launcher type. | |
| 101 for (int index = 0; index < args->nOptions; index++) { | |
| 102 const JavaVMOption* option = args->options + index; | |
| 103 const char* tail; | |
| 104 | |
| 105 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 106 process_java_launcher_argument(tail, option->extraInfo); | |
| 107 continue; | |
| 108 } | |
| 109 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 110 _sun_java_launcher_pid = atoi(tail); | |
| 111 continue; | |
| 112 } | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 // Initialize system properties key and value. | |
| 117 void Arguments::init_system_properties() { | |
| 118 | |
| 119 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.version", "1.0", false)); | |
| 120 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 121 "Java Virtual Machine Specification", false)); | |
| 122 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.vendor", | |
| 123 "Sun Microsystems Inc.", false)); | |
| 124 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 125 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 126 PropertyList_add(&_system_properties, new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); | |
| 127 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 128 | |
| 129 // following are JVMTI agent writeable properties. | |
| 130 // Properties values are set to NULL and they are | |
| 131 // os specific they are initialized in os::init_system_properties_values(). | |
| 132 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 133 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 134 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 135 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 136 _java_home = new SystemProperty("java.home", NULL, true); | |
| 137 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
| 138 | |
| 139 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 140 | |
| 141 // Add to System Property list. | |
| 142 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 143 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 144 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 145 PropertyList_add(&_system_properties, _java_library_path); | |
| 146 PropertyList_add(&_system_properties, _java_home); | |
| 147 PropertyList_add(&_system_properties, _java_class_path); | |
| 148 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
| 149 | |
| 150 // Set OS specific system properties values | |
| 151 os::init_system_properties_values(); | |
| 152 } | |
| 153 | |
| 242 | 154 /** |
| 155 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 156 * When a flag is eliminated, it can be added to this list in order to | |
| 157 * continue accepting this flag on the command-line, while issuing a warning | |
| 158 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 159 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 160 * a flag to die correctly over JDK releases using HSX. | |
| 161 */ | |
| 162 typedef struct { | |
| 163 const char* name; | |
| 164 JDK_Version obsoleted_in; // when the flag went away | |
| 165 JDK_Version accept_until; // which version to start denying the existence | |
| 166 } ObsoleteFlag; | |
| 0 | 167 |
| 242 | 168 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 169 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 170 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 171 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 172 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 173 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 174 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 175 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 176 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 177 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 178 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 179 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 180 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 181 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 182 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 1064 | 183 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
| 184 { "DefaultInitialRAMFraction", | |
| 185 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
|
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186 { "UseDepthFirstScavengeOrder", |
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187 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
| 242 | 188 { NULL, JDK_Version(0), JDK_Version(0) } |
| 189 }; | |
| 190 | |
| 191 // Returns true if the flag is obsolete and fits into the range specified | |
| 192 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 193 // value is filled in with the version number when the flag became | |
| 194 // obsolete so that that value can be displayed to the user. | |
| 195 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 196 int i = 0; |
| 242 | 197 assert(version != NULL, "Must provide a version buffer"); |
| 198 while (obsolete_jvm_flags[i].name != NULL) { | |
| 199 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 200 // <flag>=xxx form |
| 201 // [-|+]<flag> form | |
| 242 | 202 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 203 ((s[0] == '+' || s[0] == '-') && |
| 242 | 204 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 205 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 206 *version = flag_status.obsoleted_in; | |
| 207 return true; | |
| 208 } | |
| 0 | 209 } |
| 210 i++; | |
| 211 } | |
| 212 return false; | |
| 213 } | |
| 214 | |
| 215 // Constructs the system class path (aka boot class path) from the following | |
| 216 // components, in order: | |
| 217 // | |
| 218 // prefix // from -Xbootclasspath/p:... | |
| 219 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 220 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 221 // suffix // from -Xbootclasspath/a:... | |
| 222 // | |
| 223 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 224 // directories are added to the sysclasspath just before the base. | |
| 225 // | |
| 226 // This could be AllStatic, but it isn't needed after argument processing is | |
| 227 // complete. | |
| 228 class SysClassPath: public StackObj { | |
| 229 public: | |
| 230 SysClassPath(const char* base); | |
| 231 ~SysClassPath(); | |
| 232 | |
| 233 inline void set_base(const char* base); | |
| 234 inline void add_prefix(const char* prefix); | |
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235 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 236 inline void add_suffix(const char* suffix); |
| 237 inline void reset_path(const char* base); | |
| 238 | |
| 239 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 240 // property. Must be called after all command-line arguments have been | |
| 241 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 242 // combined_path(). | |
| 243 void expand_endorsed(); | |
| 244 | |
| 245 inline const char* get_base() const { return _items[_scp_base]; } | |
| 246 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 247 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 248 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 249 | |
| 250 // Combine all the components into a single c-heap-allocated string; caller | |
| 251 // must free the string if/when no longer needed. | |
| 252 char* combined_path(); | |
| 253 | |
| 254 private: | |
| 255 // Utility routines. | |
| 256 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 257 static char* add_jars_to_path(char* path, const char* directory); | |
| 258 | |
| 259 inline void reset_item_at(int index); | |
| 260 | |
| 261 // Array indices for the items that make up the sysclasspath. All except the | |
| 262 // base are allocated in the C heap and freed by this class. | |
| 263 enum { | |
| 264 _scp_prefix, // from -Xbootclasspath/p:... | |
| 265 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 266 _scp_base, // the default sysclasspath | |
| 267 _scp_suffix, // from -Xbootclasspath/a:... | |
| 268 _scp_nitems // the number of items, must be last. | |
| 269 }; | |
| 270 | |
| 271 const char* _items[_scp_nitems]; | |
| 272 DEBUG_ONLY(bool _expansion_done;) | |
| 273 }; | |
| 274 | |
| 275 SysClassPath::SysClassPath(const char* base) { | |
| 276 memset(_items, 0, sizeof(_items)); | |
| 277 _items[_scp_base] = base; | |
| 278 DEBUG_ONLY(_expansion_done = false;) | |
| 279 } | |
| 280 | |
| 281 SysClassPath::~SysClassPath() { | |
| 282 // Free everything except the base. | |
| 283 for (int i = 0; i < _scp_nitems; ++i) { | |
| 284 if (i != _scp_base) reset_item_at(i); | |
| 285 } | |
| 286 DEBUG_ONLY(_expansion_done = false;) | |
| 287 } | |
| 288 | |
| 289 inline void SysClassPath::set_base(const char* base) { | |
| 290 _items[_scp_base] = base; | |
| 291 } | |
| 292 | |
| 293 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 294 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 295 } | |
| 296 | |
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297 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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298 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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299 } |
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300 |
| 0 | 301 inline void SysClassPath::add_suffix(const char* suffix) { |
| 302 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 303 } | |
| 304 | |
| 305 inline void SysClassPath::reset_item_at(int index) { | |
| 306 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 307 if (_items[index] != NULL) { | |
| 308 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 309 _items[index] = NULL; | |
| 310 } | |
| 311 } | |
| 312 | |
| 313 inline void SysClassPath::reset_path(const char* base) { | |
| 314 // Clear the prefix and suffix. | |
| 315 reset_item_at(_scp_prefix); | |
| 316 reset_item_at(_scp_suffix); | |
| 317 set_base(base); | |
| 318 } | |
| 319 | |
| 320 //------------------------------------------------------------------------------ | |
| 321 | |
| 322 void SysClassPath::expand_endorsed() { | |
| 323 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 324 | |
| 325 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 326 if (path == NULL) { | |
| 327 path = Arguments::get_endorsed_dir(); | |
| 328 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 329 } | |
| 330 | |
| 331 char* expanded_path = NULL; | |
| 332 const char separator = *os::path_separator(); | |
| 333 const char* const end = path + strlen(path); | |
| 334 while (path < end) { | |
| 335 const char* tmp_end = strchr(path, separator); | |
| 336 if (tmp_end == NULL) { | |
| 337 expanded_path = add_jars_to_path(expanded_path, path); | |
| 338 path = end; | |
| 339 } else { | |
| 340 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 341 memcpy(dirpath, path, tmp_end - path); | |
| 342 dirpath[tmp_end - path] = '\0'; | |
| 343 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 344 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 345 path = tmp_end + 1; | |
| 346 } | |
| 347 } | |
| 348 _items[_scp_endorsed] = expanded_path; | |
| 349 DEBUG_ONLY(_expansion_done = true;) | |
| 350 } | |
| 351 | |
| 352 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 353 // c-heap-allocated string. | |
| 354 char* SysClassPath::combined_path() { | |
| 355 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 356 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 357 | |
| 358 size_t lengths[_scp_nitems]; | |
| 359 size_t total_len = 0; | |
| 360 | |
| 361 const char separator = *os::path_separator(); | |
| 362 | |
| 363 // Get the lengths. | |
| 364 int i; | |
| 365 for (i = 0; i < _scp_nitems; ++i) { | |
| 366 if (_items[i] != NULL) { | |
| 367 lengths[i] = strlen(_items[i]); | |
| 368 // Include space for the separator char (or a NULL for the last item). | |
| 369 total_len += lengths[i] + 1; | |
| 370 } | |
| 371 } | |
| 372 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 373 | |
| 374 // Copy the _items to a single string. | |
| 375 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 376 char* cp_tmp = cp; | |
| 377 for (i = 0; i < _scp_nitems; ++i) { | |
| 378 if (_items[i] != NULL) { | |
| 379 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 380 cp_tmp += lengths[i]; | |
| 381 *cp_tmp++ = separator; | |
| 382 } | |
| 383 } | |
| 384 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 385 return cp; | |
| 386 } | |
| 387 | |
| 388 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 389 char* | |
| 390 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 391 char *cp; | |
| 392 | |
| 393 assert(str != NULL, "just checking"); | |
| 394 if (path == NULL) { | |
| 395 size_t len = strlen(str) + 1; | |
| 396 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 397 memcpy(cp, str, len); // copy the trailing null | |
| 398 } else { | |
| 399 const char separator = *os::path_separator(); | |
| 400 size_t old_len = strlen(path); | |
| 401 size_t str_len = strlen(str); | |
| 402 size_t len = old_len + str_len + 2; | |
| 403 | |
| 404 if (prepend) { | |
| 405 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 406 char* cp_tmp = cp; | |
| 407 memcpy(cp_tmp, str, str_len); | |
| 408 cp_tmp += str_len; | |
| 409 *cp_tmp = separator; | |
| 410 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 411 FREE_C_HEAP_ARRAY(char, path); | |
| 412 } else { | |
| 413 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 414 char* cp_tmp = cp + old_len; | |
| 415 *cp_tmp = separator; | |
| 416 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 417 } | |
| 418 } | |
| 419 return cp; | |
| 420 } | |
| 421 | |
| 422 // Scan the directory and append any jar or zip files found to path. | |
| 423 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 424 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 425 DIR* dir = os::opendir(directory); | |
| 426 if (dir == NULL) return path; | |
| 427 | |
| 428 char dir_sep[2] = { '\0', '\0' }; | |
| 429 size_t directory_len = strlen(directory); | |
| 430 const char fileSep = *os::file_separator(); | |
| 431 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 432 | |
| 433 /* Scan the directory for jars/zips, appending them to path. */ | |
| 434 struct dirent *entry; | |
| 435 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 436 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 437 const char* name = entry->d_name; | |
| 438 const char* ext = name + strlen(name) - 4; | |
| 439 bool isJarOrZip = ext > name && | |
| 440 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 441 os::file_name_strcmp(ext, ".zip") == 0); | |
| 442 if (isJarOrZip) { | |
| 443 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 444 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 445 path = add_to_path(path, jarpath, false); | |
| 446 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 447 } | |
| 448 } | |
| 449 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 450 os::closedir(dir); | |
| 451 return path; | |
| 452 } | |
| 453 | |
| 454 // Parses a memory size specification string. | |
|
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455 static bool atomull(const char *s, julong* result) { |
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456 julong n = 0; |
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457 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 458 if (args_read != 1) { |
| 459 return false; | |
| 460 } | |
| 461 while (*s != '\0' && isdigit(*s)) { | |
| 462 s++; | |
| 463 } | |
| 464 // 4705540: illegal if more characters are found after the first non-digit | |
| 465 if (strlen(s) > 1) { | |
| 466 return false; | |
| 467 } | |
| 468 switch (*s) { | |
| 469 case 'T': case 't': | |
| 470 *result = n * G * K; | |
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471 // Check for overflow. |
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472 if (*result/((julong)G * K) != n) return false; |
| 0 | 473 return true; |
| 474 case 'G': case 'g': | |
| 475 *result = n * G; | |
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476 if (*result/G != n) return false; |
| 0 | 477 return true; |
| 478 case 'M': case 'm': | |
| 479 *result = n * M; | |
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480 if (*result/M != n) return false; |
| 0 | 481 return true; |
| 482 case 'K': case 'k': | |
| 483 *result = n * K; | |
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484 if (*result/K != n) return false; |
| 0 | 485 return true; |
| 486 case '\0': | |
| 487 *result = n; | |
| 488 return true; | |
| 489 default: | |
| 490 return false; | |
| 491 } | |
| 492 } | |
| 493 | |
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494 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 495 if (size < min_size) return arg_too_small; |
| 496 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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497 if (size > max_uintx) return arg_too_big; |
| 0 | 498 return arg_in_range; |
| 499 } | |
| 500 | |
| 501 // Describe an argument out of range error | |
| 502 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 503 switch(errcode) { | |
| 504 case arg_too_big: | |
| 505 jio_fprintf(defaultStream::error_stream(), | |
| 506 "The specified size exceeds the maximum " | |
| 507 "representable size.\n"); | |
| 508 break; | |
| 509 case arg_too_small: | |
| 510 case arg_unreadable: | |
| 511 case arg_in_range: | |
| 512 // do nothing for now | |
| 513 break; | |
| 514 default: | |
| 515 ShouldNotReachHere(); | |
| 516 } | |
| 517 } | |
| 518 | |
| 519 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 520 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 521 } | |
| 522 | |
| 523 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 524 double v; | |
| 525 if (sscanf(value, "%lf", &v) != 1) { | |
| 526 return false; | |
| 527 } | |
| 528 | |
| 529 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 530 return true; | |
| 531 } | |
| 532 return false; | |
| 533 } | |
| 534 | |
| 535 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
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536 julong v; |
| 0 | 537 intx intx_v; |
| 538 bool is_neg = false; | |
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539 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 540 if (*value == '-') { |
| 541 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 542 return false; | |
| 543 } | |
| 544 value++; | |
| 545 is_neg = true; | |
| 546 } | |
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547 if (!atomull(value, &v)) { |
| 0 | 548 return false; |
| 549 } | |
| 550 intx_v = (intx) v; | |
| 551 if (is_neg) { | |
| 552 intx_v = -intx_v; | |
| 553 } | |
| 554 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 555 return true; | |
| 556 } | |
| 557 uintx uintx_v = (uintx) v; | |
| 558 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 559 return true; | |
| 560 } | |
| 1064 | 561 uint64_t uint64_t_v = (uint64_t) v; |
| 562 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
| 563 return true; | |
| 564 } | |
| 0 | 565 return false; |
| 566 } | |
| 567 | |
| 568 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 569 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 570 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 571 FREE_C_HEAP_ARRAY(char, value); | |
| 572 return true; | |
| 573 } | |
| 574 | |
| 575 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 576 const char* old_value = ""; | |
| 577 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 578 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 579 size_t new_len = strlen(new_value); | |
| 580 const char* value; | |
| 581 char* free_this_too = NULL; | |
| 582 if (old_len == 0) { | |
| 583 value = new_value; | |
| 584 } else if (new_len == 0) { | |
| 585 value = old_value; | |
| 586 } else { | |
| 587 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 588 // each new setting adds another LINE to the switch: | |
| 589 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 590 value = buf; | |
| 591 free_this_too = buf; | |
| 592 } | |
| 593 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 594 // CommandLineFlags always returns a pointer that needs freeing. | |
| 595 FREE_C_HEAP_ARRAY(char, value); | |
| 596 if (free_this_too != NULL) { | |
| 597 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 598 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 599 } | |
| 600 return true; | |
| 601 } | |
| 602 | |
| 603 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 604 | |
| 605 // range of acceptable characters spelled out for portability reasons | |
| 606 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 607 #define BUFLEN 255 | |
| 608 char name[BUFLEN+1]; | |
| 609 char dummy; | |
| 610 | |
| 611 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 612 return set_bool_flag(name, false, origin); | |
| 613 } | |
| 614 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 615 return set_bool_flag(name, true, origin); | |
| 616 } | |
| 617 | |
| 618 char punct; | |
| 619 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 620 const char* value = strchr(arg, '=') + 1; | |
| 621 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 622 if (flag != NULL && flag->is_ccstr()) { | |
| 623 if (flag->ccstr_accumulates()) { | |
| 624 return append_to_string_flag(name, value, origin); | |
| 625 } else { | |
| 626 if (value[0] == '\0') { | |
| 627 value = NULL; | |
| 628 } | |
| 629 return set_string_flag(name, value, origin); | |
| 630 } | |
| 631 } | |
| 632 } | |
| 633 | |
| 634 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 635 const char* value = strchr(arg, '=') + 1; | |
| 636 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 637 if (value[0] == '\0') { | |
| 638 value = NULL; | |
| 639 } | |
| 640 return set_string_flag(name, value, origin); | |
| 641 } | |
| 642 | |
| 643 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 644 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 645 #define NUMBER_RANGE "[0123456789]" | |
| 646 char value[BUFLEN + 1]; | |
| 647 char value2[BUFLEN + 1]; | |
| 648 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 649 // Looks like a floating-point number -- try again with more lenient format string | |
| 650 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 651 return set_fp_numeric_flag(name, value, origin); | |
| 652 } | |
| 653 } | |
| 654 | |
| 655 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 656 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 657 return set_numeric_flag(name, value, origin); | |
| 658 } | |
| 659 | |
| 660 return false; | |
| 661 } | |
| 662 | |
| 663 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 664 assert(bldarray != NULL, "illegal argument"); | |
| 665 | |
| 666 if (arg == NULL) { | |
| 667 return; | |
| 668 } | |
| 669 | |
| 670 int index = *count; | |
| 671 | |
| 672 // expand the array and add arg to the last element | |
| 673 (*count)++; | |
| 674 if (*bldarray == NULL) { | |
| 675 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 676 } else { | |
| 677 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 678 } | |
| 679 (*bldarray)[index] = strdup(arg); | |
| 680 } | |
| 681 | |
| 682 void Arguments::build_jvm_args(const char* arg) { | |
| 683 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 684 } | |
| 685 | |
| 686 void Arguments::build_jvm_flags(const char* arg) { | |
| 687 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 688 } | |
| 689 | |
| 690 // utility function to return a string that concatenates all | |
| 691 // strings in a given char** array | |
| 692 const char* Arguments::build_resource_string(char** args, int count) { | |
| 693 if (args == NULL || count == 0) { | |
| 694 return NULL; | |
| 695 } | |
| 696 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 697 for (int i = 1; i < count; i++) { | |
| 698 length += strlen(args[i]) + 1; // add 1 for a space | |
| 699 } | |
| 700 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 701 strcpy(s, args[0]); | |
| 702 for (int j = 1; j < count; j++) { | |
| 703 strcat(s, " "); | |
| 704 strcat(s, args[j]); | |
| 705 } | |
| 706 return (const char*) s; | |
| 707 } | |
| 708 | |
| 709 void Arguments::print_on(outputStream* st) { | |
| 710 st->print_cr("VM Arguments:"); | |
| 711 if (num_jvm_flags() > 0) { | |
| 712 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 713 } | |
| 714 if (num_jvm_args() > 0) { | |
| 715 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 716 } | |
| 717 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 718 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 719 } | |
| 720 | |
| 721 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 722 if (_num_jvm_flags > 0) { | |
| 723 for (int i=0; i < _num_jvm_flags; i++) { | |
| 724 st->print("%s ", _jvm_flags_array[i]); | |
| 725 } | |
| 726 st->print_cr(""); | |
| 727 } | |
| 728 } | |
| 729 | |
| 730 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 731 if (_num_jvm_args > 0) { | |
| 732 for (int i=0; i < _num_jvm_args; i++) { | |
| 733 st->print("%s ", _jvm_args_array[i]); | |
| 734 } | |
| 735 st->print_cr(""); | |
| 736 } | |
| 737 } | |
| 738 | |
| 242 | 739 bool Arguments::process_argument(const char* arg, |
| 740 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 741 | |
| 742 JDK_Version since = JDK_Version(); | |
| 0 | 743 |
| 744 if (parse_argument(arg, origin)) { | |
| 745 // do nothing | |
| 242 | 746 } else if (is_newly_obsolete(arg, &since)) { |
| 747 enum { bufsize = 256 }; | |
| 748 char buffer[bufsize]; | |
| 749 since.to_string(buffer, bufsize); | |
| 0 | 750 jio_fprintf(defaultStream::error_stream(), |
| 242 | 751 "Warning: The flag %s has been EOL'd as of %s and will" |
| 752 " be ignored\n", arg, buffer); | |
| 0 | 753 } else { |
| 754 if (!ignore_unrecognized) { | |
| 755 jio_fprintf(defaultStream::error_stream(), | |
| 756 "Unrecognized VM option '%s'\n", arg); | |
| 757 // allow for commandline "commenting out" options like -XX:#+Verbose | |
| 758 if (strlen(arg) == 0 || arg[0] != '#') { | |
| 759 return false; | |
| 760 } | |
| 761 } | |
| 762 } | |
| 763 return true; | |
| 764 } | |
| 765 | |
| 766 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 767 FILE* stream = fopen(file_name, "rb"); | |
| 768 if (stream == NULL) { | |
| 769 if (should_exist) { | |
| 770 jio_fprintf(defaultStream::error_stream(), | |
| 771 "Could not open settings file %s\n", file_name); | |
| 772 return false; | |
| 773 } else { | |
| 774 return true; | |
| 775 } | |
| 776 } | |
| 777 | |
| 778 char token[1024]; | |
| 779 int pos = 0; | |
| 780 | |
| 781 bool in_white_space = true; | |
| 782 bool in_comment = false; | |
| 783 bool in_quote = false; | |
| 784 char quote_c = 0; | |
| 785 bool result = true; | |
| 786 | |
| 787 int c = getc(stream); | |
| 788 while(c != EOF) { | |
| 789 if (in_white_space) { | |
| 790 if (in_comment) { | |
| 791 if (c == '\n') in_comment = false; | |
| 792 } else { | |
| 793 if (c == '#') in_comment = true; | |
| 794 else if (!isspace(c)) { | |
| 795 in_white_space = false; | |
| 796 token[pos++] = c; | |
| 797 } | |
| 798 } | |
| 799 } else { | |
| 800 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 801 // token ends at newline, or at unquoted whitespace | |
| 802 // this allows a way to include spaces in string-valued options | |
| 803 token[pos] = '\0'; | |
| 804 logOption(token); | |
| 805 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 806 build_jvm_flags(token); | |
| 807 pos = 0; | |
| 808 in_white_space = true; | |
| 809 in_quote = false; | |
| 810 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 811 in_quote = true; | |
| 812 quote_c = c; | |
| 813 } else if (in_quote && (c == quote_c)) { | |
| 814 in_quote = false; | |
| 815 } else { | |
| 816 token[pos++] = c; | |
| 817 } | |
| 818 } | |
| 819 c = getc(stream); | |
| 820 } | |
| 821 if (pos > 0) { | |
| 822 token[pos] = '\0'; | |
| 823 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 824 build_jvm_flags(token); | |
| 825 } | |
| 826 fclose(stream); | |
| 827 return result; | |
| 828 } | |
| 829 | |
| 830 //============================================================================================================= | |
| 831 // Parsing of properties (-D) | |
| 832 | |
| 833 const char* Arguments::get_property(const char* key) { | |
| 834 return PropertyList_get_value(system_properties(), key); | |
| 835 } | |
| 836 | |
| 837 bool Arguments::add_property(const char* prop) { | |
| 838 const char* eq = strchr(prop, '='); | |
| 839 char* key; | |
| 840 // ns must be static--its address may be stored in a SystemProperty object. | |
| 841 const static char ns[1] = {0}; | |
| 842 char* value = (char *)ns; | |
| 843 | |
| 844 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 845 key = AllocateHeap(key_len + 1, "add_property"); | |
| 846 strncpy(key, prop, key_len); | |
| 847 key[key_len] = '\0'; | |
| 848 | |
| 849 if (eq != NULL) { | |
| 850 size_t value_len = strlen(prop) - key_len - 1; | |
| 851 value = AllocateHeap(value_len + 1, "add_property"); | |
| 852 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 853 } | |
| 854 | |
| 855 if (strcmp(key, "java.compiler") == 0) { | |
| 856 process_java_compiler_argument(value); | |
| 857 FreeHeap(key); | |
| 858 if (eq != NULL) { | |
| 859 FreeHeap(value); | |
| 860 } | |
| 861 return true; | |
| 691 | 862 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 863 _java_command = value; |
| 864 | |
| 865 // don't add this property to the properties exposed to the java application | |
| 866 FreeHeap(key); | |
| 867 return true; | |
| 691 | 868 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 869 // launcher.pid property is private and is processed |
| 870 // in process_sun_java_launcher_properties(); | |
| 871 // the sun.java.launcher property is passed on to the java application | |
| 872 FreeHeap(key); | |
| 873 if (eq != NULL) { | |
| 874 FreeHeap(value); | |
| 875 } | |
| 876 return true; | |
| 691 | 877 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 878 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 879 // its value without going through the property list or making a Java call. | |
| 880 _java_vendor_url_bug = value; | |
| 691 | 881 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 882 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 883 return true; | |
| 0 | 884 } |
| 885 // Create new property and add at the end of the list | |
| 886 PropertyList_unique_add(&_system_properties, key, value); | |
| 887 return true; | |
| 888 } | |
| 889 | |
| 890 //=========================================================================================================== | |
| 891 // Setting int/mixed/comp mode flags | |
| 892 | |
| 893 void Arguments::set_mode_flags(Mode mode) { | |
| 894 // Set up default values for all flags. | |
| 895 // If you add a flag to any of the branches below, | |
| 896 // add a default value for it here. | |
| 897 set_java_compiler(false); | |
| 898 _mode = mode; | |
| 899 | |
| 900 // Ensure Agent_OnLoad has the correct initial values. | |
| 901 // This may not be the final mode; mode may change later in onload phase. | |
| 902 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
| 691 | 903 (char*)Abstract_VM_Version::vm_info_string(), false); |
| 0 | 904 |
| 905 UseInterpreter = true; | |
| 906 UseCompiler = true; | |
| 907 UseLoopCounter = true; | |
| 908 | |
| 909 // Default values may be platform/compiler dependent - | |
| 910 // use the saved values | |
| 911 ClipInlining = Arguments::_ClipInlining; | |
| 912 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 913 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 914 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 915 | |
| 916 // Change from defaults based on mode | |
| 917 switch (mode) { | |
| 918 default: | |
| 919 ShouldNotReachHere(); | |
| 920 break; | |
| 921 case _int: | |
| 922 UseCompiler = false; | |
| 923 UseLoopCounter = false; | |
| 924 AlwaysCompileLoopMethods = false; | |
| 925 UseOnStackReplacement = false; | |
| 926 break; | |
| 927 case _mixed: | |
| 928 // same as default | |
| 929 break; | |
| 930 case _comp: | |
| 931 UseInterpreter = false; | |
| 932 BackgroundCompilation = false; | |
| 933 ClipInlining = false; | |
| 934 break; | |
| 935 } | |
| 936 } | |
| 937 | |
| 938 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 939 // incompatible command line options were chosen. | |
| 940 | |
| 941 static void no_shared_spaces() { | |
| 942 if (RequireSharedSpaces) { | |
| 943 jio_fprintf(defaultStream::error_stream(), | |
| 944 "Class data sharing is inconsistent with other specified options.\n"); | |
| 945 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 946 } else { | |
| 947 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 948 } | |
| 949 } | |
| 950 | |
| 1783 | 951 void Arguments::set_tiered_flags() { |
| 952 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { | |
| 953 FLAG_SET_DEFAULT(CompilationPolicyChoice, 2); | |
| 954 } | |
| 955 | |
| 956 if (CompilationPolicyChoice < 2) { | |
| 957 vm_exit_during_initialization( | |
| 958 "Incompatible compilation policy selected", NULL); | |
| 959 } | |
| 960 | |
| 961 #ifdef _LP64 | |
| 962 if (FLAG_IS_DEFAULT(UseCompressedOops) || FLAG_IS_ERGO(UseCompressedOops)) { | |
| 963 UseCompressedOops = false; | |
| 964 } | |
| 965 if (UseCompressedOops) { | |
| 966 vm_exit_during_initialization( | |
| 967 "Tiered compilation is not supported with compressed oops yet", NULL); | |
| 968 } | |
| 969 #endif | |
| 970 // Increase the code cache size - tiered compiles a lot more. | |
| 971 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { | |
| 972 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
| 973 } | |
| 974 } | |
| 975 | |
|
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976 #ifndef KERNEL |
| 0 | 977 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
| 978 // if it's not explictly set or unset. If the user has chosen | |
| 979 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 980 // set it, unless this is a single cpu machine. | |
| 981 void Arguments::set_parnew_gc_flags() { | |
| 1064 | 982 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
|
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983 "control point invariant"); |
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984 assert(UseParNewGC, "Error"); |
| 0 | 985 |
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986 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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987 // complete. |
|
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988 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
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989 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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990 } |
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991 |
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992 if (ParallelGCThreads == 0) { |
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993 FLAG_SET_DEFAULT(ParallelGCThreads, |
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994 Abstract_VM_Version::parallel_worker_threads()); |
| 1064 | 995 if (ParallelGCThreads == 1) { |
| 0 | 996 FLAG_SET_DEFAULT(UseParNewGC, false); |
| 1064 | 997 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
| 0 | 998 } |
| 999 } | |
| 1064 | 1000 if (UseParNewGC) { |
| 1001 // CDS doesn't work with ParNew yet | |
| 0 | 1002 no_shared_spaces(); |
| 1003 | |
| 695 | 1004 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
| 0 | 1005 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
| 1006 // we set them to 1024 and 1024. | |
| 1007 // See CR 6362902. | |
| 1008 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 1009 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 1010 } | |
| 1011 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1012 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 1013 } | |
| 1014 | |
| 1064 | 1015 // AlwaysTenure flag should make ParNew promote all at first collection. |
| 0 | 1016 // See CR 6362902. |
| 1017 if (AlwaysTenure) { | |
| 1018 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 1019 } | |
| 695 | 1020 // When using compressed oops, we use local overflow stacks, |
| 1021 // rather than using a global overflow list chained through | |
| 1022 // the klass word of the object's pre-image. | |
| 1023 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
| 1024 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
| 1025 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
| 1026 } | |
| 1027 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
| 1028 } | |
| 1029 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
| 0 | 1030 } |
| 1031 } | |
| 1032 | |
| 1033 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1034 // sparc/solaris for certain applications, but would gain from | |
| 1035 // further optimization and tuning efforts, and would almost | |
| 1036 // certainly gain from analysis of platform and environment. | |
| 1037 void Arguments::set_cms_and_parnew_gc_flags() { | |
| 1064 | 1038 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
|
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1039 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1040 |
| 0 | 1041 // If we are using CMS, we prefer to UseParNewGC, |
| 1042 // unless explicitly forbidden. | |
|
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1043 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1044 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1045 } |
| 1046 | |
| 1047 // Turn off AdaptiveSizePolicy by default for cms until it is | |
|
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1048 // complete. |
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1049 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
| 0 | 1050 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
| 1051 } | |
| 1052 | |
| 1053 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1054 // as needed. | |
|
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1055 if (UseParNewGC) { |
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1056 set_parnew_gc_flags(); |
| 0 | 1057 } |
| 1058 | |
| 1059 // Now make adjustments for CMS | |
| 1060 size_t young_gen_per_worker; | |
| 1061 intx new_ratio; | |
| 1062 size_t min_new_default; | |
| 1063 intx tenuring_default; | |
| 1064 if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0 | |
| 1065 if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) { | |
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1066 FLAG_SET_ERGO(intx, CMSYoungGenPerWorker, 4*M); |
| 0 | 1067 } |
| 1068 young_gen_per_worker = 4*M; | |
| 1069 new_ratio = (intx)15; | |
| 1070 min_new_default = 4*M; | |
| 1071 tenuring_default = (intx)0; | |
| 1072 } else { // new defaults: "new" as of 6.0 | |
| 1073 young_gen_per_worker = CMSYoungGenPerWorker; | |
| 1074 new_ratio = (intx)7; | |
| 1075 min_new_default = 16*M; | |
| 1076 tenuring_default = (intx)4; | |
| 1077 } | |
| 1078 | |
| 1079 // Preferred young gen size for "short" pauses | |
| 1080 const uintx parallel_gc_threads = | |
| 1081 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1082 const size_t preferred_max_new_size_unaligned = | |
| 1083 ScaleForWordSize(young_gen_per_worker * parallel_gc_threads); | |
| 1084 const size_t preferred_max_new_size = | |
| 1085 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); | |
| 1086 | |
| 1087 // Unless explicitly requested otherwise, size young gen | |
| 1088 // for "short" pauses ~ 4M*ParallelGCThreads | |
|
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1089 |
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1090 // If either MaxNewSize or NewRatio is set on the command line, |
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1091 // assume the user is trying to set the size of the young gen. |
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1092 |
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1093 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1094 |
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1095 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1096 // NewSize was set on the command line and it is larger than |
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1097 // preferred_max_new_size. |
| 0 | 1098 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
|
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1099 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1100 } else { |
|
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1101 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1102 } |
| 1064 | 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 MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
|
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1106 } |
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1107 |
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1108 // Unless explicitly requested otherwise, prefer a large |
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1109 // Old to Young gen size so as to shift the collection load |
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1110 // to the old generation concurrent collector |
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1111 |
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1112 // If this is only guarded by FLAG_IS_DEFAULT(NewRatio) |
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1113 // then NewSize and OldSize may be calculated. That would |
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1114 // generally lead to some differences with ParNewGC for which |
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1115 // there was no obvious reason. Also limit to the case where |
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1116 // MaxNewSize has not been set. |
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1117 |
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1118 FLAG_SET_ERGO(intx, NewRatio, MAX2(NewRatio, new_ratio)); |
| 0 | 1119 |
|
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1120 // Code along this path potentially sets NewSize and OldSize |
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1121 |
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1122 // Calculate the desired minimum size of the young gen but if |
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1123 // NewSize has been set on the command line, use it here since |
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1124 // it should be the final value. |
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1125 size_t min_new; |
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1126 if (FLAG_IS_DEFAULT(NewSize)) { |
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1127 min_new = align_size_up(ScaleForWordSize(min_new_default), |
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1128 os::vm_page_size()); |
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1129 } else { |
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1130 min_new = NewSize; |
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1131 } |
| 1064 | 1132 size_t prev_initial_size = InitialHeapSize; |
| 1133 if (prev_initial_size != 0 && prev_initial_size < min_new + OldSize) { | |
| 1134 FLAG_SET_ERGO(uintx, InitialHeapSize, min_new + OldSize); | |
| 0 | 1135 // Currently minimum size and the initial heap sizes are the same. |
| 1064 | 1136 set_min_heap_size(InitialHeapSize); |
| 0 | 1137 if (PrintGCDetails && Verbose) { |
| 1138 warning("Initial heap size increased to " SIZE_FORMAT " M from " | |
| 1139 SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", | |
| 1064 | 1140 InitialHeapSize/M, prev_initial_size/M); |
| 0 | 1141 } |
| 1142 } | |
|
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1143 |
| 0 | 1144 // MaxHeapSize is aligned down in collectorPolicy |
|
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1145 size_t max_heap = |
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1146 align_size_down(MaxHeapSize, |
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1147 CardTableRS::ct_max_alignment_constraint()); |
| 0 | 1148 |
| 1064 | 1149 if (PrintGCDetails && Verbose) { |
|
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1150 // Too early to use gclog_or_tty |
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1151 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1152 " initial_heap_size: " SIZE_FORMAT |
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1153 " max_heap: " SIZE_FORMAT, |
| 1064 | 1154 min_heap_size(), InitialHeapSize, max_heap); |
|
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1155 } |
| 0 | 1156 if (max_heap > min_new) { |
| 1157 // Unless explicitly requested otherwise, make young gen | |
| 1158 // at least min_new, and at most preferred_max_new_size. | |
| 1159 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
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1160 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1161 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
| 1064 | 1162 if (PrintGCDetails && Verbose) { |
|
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1163 // Too early to use gclog_or_tty |
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1164 tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); |
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1165 } |
| 0 | 1166 } |
| 1167 // Unless explicitly requested otherwise, size old gen | |
| 1168 // so that it's at least 3X of NewSize to begin with; | |
| 1169 // later NewRatio will decide how it grows; see above. | |
| 1170 if (FLAG_IS_DEFAULT(OldSize)) { | |
| 1171 if (max_heap > NewSize) { | |
| 1064 | 1172 FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); |
| 1173 if (PrintGCDetails && Verbose) { | |
|
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1174 // Too early to use gclog_or_tty |
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1175 tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); |
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1176 } |
| 0 | 1177 } |
| 1178 } | |
| 1179 } | |
| 1180 } | |
| 1181 // Unless explicitly requested otherwise, definitely | |
| 1182 // promote all objects surviving "tenuring_default" scavenges. | |
| 1183 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1184 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
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1185 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1186 } |
| 1187 // If we decided above (or user explicitly requested) | |
| 1188 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1189 // prefer minuscule survivor spaces so as not to waste | |
| 1190 // space for (non-existent) survivors | |
| 1191 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
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1192 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1193 } |
| 1194 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1195 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1196 // This is done in order to make ParNew+CMS configuration to work | |
| 1197 // with YoungPLABSize and OldPLABSize options. | |
| 1198 // See CR 6362902. | |
| 1199 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1200 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
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1201 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
|
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1202 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
|
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1203 // the value (either from the command line or ergonomics) of |
|
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1204 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
|
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1205 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
|
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1206 } else { |
| 0 | 1207 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
| 1208 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1209 // we'll let it to take precedence. | |
| 1210 jio_fprintf(defaultStream::error_stream(), | |
|
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1211 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1212 " options are specified for the CMS collector." |
|
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1213 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
| 0 | 1214 } |
| 1215 } | |
|
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1216 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
|
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1217 // OldPLAB sizing manually turned off: Use a larger default setting, |
|
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1218 // unless it was manually specified. This is because a too-low value |
|
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1219 // will slow down scavenges. |
|
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1220 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1221 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
|
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1222 } |
|
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1223 } |
|
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1224 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
|
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1225 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
|
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1226 // If either of the static initialization defaults have changed, note this |
|
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1227 // modification. |
|
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1228 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
|
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1229 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
|
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1230 } |
| 1284 | 1231 if (PrintGCDetails && Verbose) { |
| 1232 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1233 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1234 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1235 } | |
| 0 | 1236 } |
|
1145
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1237 #endif // KERNEL |
| 0 | 1238 |
|
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1239 void set_object_alignment() { |
|
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1240 // Object alignment. |
|
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1241 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
|
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1242 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
|
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1243 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
|
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1244 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
|
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1245 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
|
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1246 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
|
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1247 |
|
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1248 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
|
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1249 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
|
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1250 |
|
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1251 // Oop encoding heap max |
|
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1252 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
|
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|
1253 |
|
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|
1254 #ifndef KERNEL |
|
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|
1255 // Set CMS global values |
|
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|
1256 CompactibleFreeListSpace::set_cms_values(); |
|
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|
1257 #endif // KERNEL |
|
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|
1258 } |
|
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|
1259 |
|
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|
1260 bool verify_object_alignment() { |
|
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1261 // Object alignment. |
|
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1262 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
|
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|
1263 jio_fprintf(defaultStream::error_stream(), |
|
1829
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|
1264 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
|
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|
1265 (int)ObjectAlignmentInBytes); |
|
1571
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1266 return false; |
|
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|
1267 } |
|
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1268 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
|
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|
1269 jio_fprintf(defaultStream::error_stream(), |
|
1829
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|
1270 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
|
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1271 (int)ObjectAlignmentInBytes, BytesPerLong); |
|
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1272 return false; |
|
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|
1273 } |
|
fe08403130db
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|
1274 // It does not make sense to have big object alignment |
|
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1275 // since a space lost due to alignment will be greater |
|
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|
1276 // then a saved space from compressed oops. |
|
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1277 if ((int)ObjectAlignmentInBytes > 256) { |
|
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1278 jio_fprintf(defaultStream::error_stream(), |
|
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|
1279 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
|
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|
1280 (int)ObjectAlignmentInBytes); |
|
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|
1281 return false; |
|
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|
1282 } |
|
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|
1283 // In case page size is very small. |
|
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1284 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
|
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1285 jio_fprintf(defaultStream::error_stream(), |
|
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|
1286 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
|
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|
1287 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
|
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1288 return false; |
|
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|
1289 } |
|
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1290 return true; |
|
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|
1291 } |
|
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1292 |
|
135
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|
1293 inline uintx max_heap_for_compressed_oops() { |
|
1795
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|
1294 // Heap should be above HeapBaseMinAddress to get zero based compressed oops. |
|
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|
1295 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size() - HeapBaseMinAddress); |
| 1064 | 1296 NOT_LP64(ShouldNotReachHere(); return 0); |
|
135
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1297 } |
|
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1298 |
| 0 | 1299 bool Arguments::should_auto_select_low_pause_collector() { |
| 1300 if (UseAutoGCSelectPolicy && | |
| 1301 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1302 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1303 if (PrintGCDetails) { | |
| 1304 // Cannot use gclog_or_tty yet. | |
| 1305 tty->print_cr("Automatic selection of the low pause collector" | |
| 1306 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1307 } | |
| 1308 return true; | |
| 1309 } | |
| 1310 return false; | |
| 1311 } | |
| 1312 | |
| 1313 void Arguments::set_ergonomics_flags() { | |
| 1314 // Parallel GC is not compatible with sharing. If one specifies | |
| 1064 | 1315 // that they want sharing explicitly, do not set ergonomics flags. |
| 0 | 1316 if (DumpSharedSpaces || ForceSharedSpaces) { |
| 1317 return; | |
| 1318 } | |
| 1319 | |
| 1320 if (os::is_server_class_machine() && !force_client_mode ) { | |
| 1321 // If no other collector is requested explicitly, | |
| 1322 // let the VM select the collector based on | |
| 1323 // machine class and automatic selection policy. | |
| 1324 if (!UseSerialGC && | |
| 1325 !UseConcMarkSweepGC && | |
|
342
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|
1326 !UseG1GC && |
| 0 | 1327 !UseParNewGC && |
| 1328 !DumpSharedSpaces && | |
| 1329 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1330 if (should_auto_select_low_pause_collector()) { | |
| 1331 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1332 } else { | |
| 1333 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1334 } | |
| 1335 no_shared_spaces(); | |
| 1336 } | |
| 1337 } | |
|
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1338 |
| 1010 | 1339 #ifndef ZERO |
|
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1340 #ifdef _LP64 |
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1341 // Check that UseCompressedOops can be set with the max heap size allocated |
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1342 // by ergonomics. |
| 187 | 1343 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 1783 | 1344 #if !defined(COMPILER1) || defined(TIERED) |
| 932 | 1345 if (FLAG_IS_DEFAULT(UseCompressedOops) && !UseG1GC) { |
| 1346 FLAG_SET_ERGO(bool, UseCompressedOops, true); | |
|
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1347 } |
| 1060 | 1348 #endif |
|
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1349 #ifdef _WIN64 |
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1350 if (UseLargePages && UseCompressedOops) { |
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1351 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1352 // mode, when large pages are specified on windows. |
|
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1353 // This flag could be switched ON if narrow oop base address is set to 0, |
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1354 // see code in Universe::initialize_heap(). |
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1355 Universe::set_narrow_oop_use_implicit_null_checks(false); |
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1356 } |
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1357 #endif // _WIN64 |
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1358 } else { |
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1359 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1360 warning("Max heap size too large for Compressed Oops"); |
|
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1361 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1362 } |
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1363 } |
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1364 // Also checks that certain machines are slower with compressed oops |
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1365 // in vm_version initialization code. |
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1366 #endif // _LP64 |
| 1010 | 1367 #endif // !ZERO |
| 0 | 1368 } |
| 1369 | |
| 1370 void Arguments::set_parallel_gc_flags() { | |
|
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1371 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 0 | 1372 // If parallel old was requested, automatically enable parallel scavenge. |
| 1373 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1374 FLAG_SET_DEFAULT(UseParallelGC, true); | |
| 1375 } | |
| 1376 | |
| 1377 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1378 // of the physical memory, up to a maximum of 1GB. | |
| 1379 if (UseParallelGC) { | |
|
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1380 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
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1381 Abstract_VM_Version::parallel_worker_threads()); |
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1382 |
| 0 | 1383 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1384 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1385 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1386 // See CR 6362902 for details. | |
| 1387 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1388 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1389 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1390 } | |
| 1391 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1392 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1393 } | |
| 1394 } | |
| 1395 | |
| 1396 if (UseParallelOldGC) { | |
| 1397 // Par compact uses lower default values since they are treated as | |
|
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1398 // minimums. These are different defaults because of the different |
|
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1399 // interpretation and are not ergonomically set. |
| 0 | 1400 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
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1401 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1402 } |
| 1403 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
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1404 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1405 } |
| 1406 } | |
| 1407 } | |
| 1408 } | |
| 1409 | |
|
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1410 void Arguments::set_g1_gc_flags() { |
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1411 assert(UseG1GC, "Error"); |
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1412 #ifdef COMPILER1 |
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1413 FastTLABRefill = false; |
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1414 #endif |
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1415 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1416 Abstract_VM_Version::parallel_worker_threads()); |
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1417 if (ParallelGCThreads == 0) { |
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1418 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1419 Abstract_VM_Version::parallel_worker_threads()); |
|
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1420 } |
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1421 no_shared_spaces(); |
| 751 | 1422 |
| 1284 | 1423 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
|
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1424 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
| 1284 | 1425 } |
| 1426 if (PrintGCDetails && Verbose) { | |
| 1427 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1428 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1429 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1430 } | |
| 1356 | 1431 |
| 1432 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
| 1433 // In G1, we want the default GC overhead goal to be higher than | |
| 1434 // say in PS. So we set it here to 10%. Otherwise the heap might | |
| 1435 // be expanded more aggressively than we would like it to. In | |
| 1436 // fact, even 10% seems to not be high enough in some cases | |
| 1437 // (especially small GC stress tests that the main thing they do | |
| 1438 // is allocation). We might consider increase it further. | |
| 1439 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
| 1440 } | |
|
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1441 } |
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1442 |
| 1064 | 1443 void Arguments::set_heap_size() { |
| 1444 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
| 1445 // Deprecated flag | |
| 1446 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
| 1447 } | |
| 1448 | |
| 1449 const julong phys_mem = | |
| 1450 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
| 1451 : (julong)MaxRAM; | |
| 1452 | |
| 1453 // If the maximum heap size has not been set with -Xmx, | |
| 1454 // then set it as fraction of the size of physical memory, | |
| 1455 // respecting the maximum and minimum sizes of the heap. | |
|
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1456 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
| 1064 | 1457 julong reasonable_max = phys_mem / MaxRAMFraction; |
| 1458 | |
| 1459 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
| 1460 // Small physical memory, so use a minimum fraction of it for the heap | |
| 1461 reasonable_max = phys_mem / MinRAMFraction; | |
| 1462 } else { | |
| 1463 // Not-small physical memory, so require a heap at least | |
| 1464 // as large as MaxHeapSize | |
| 1465 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
| 1466 } | |
| 1467 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
| 1468 // Limit the heap size to ErgoHeapSizeLimit | |
| 1469 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
|
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1470 } |
| 1064 | 1471 if (UseCompressedOops) { |
| 1472 // Limit the heap size to the maximum possible when using compressed oops | |
| 1473 reasonable_max = MIN2(reasonable_max, (julong)max_heap_for_compressed_oops()); | |
| 1474 } | |
| 1475 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
| 1476 | |
| 1477 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
| 1478 // An initial heap size was specified on the command line, | |
| 1479 // so be sure that the maximum size is consistent. Done | |
| 1480 // after call to allocatable_physical_memory because that | |
| 1481 // method might reduce the allocation size. | |
| 1482 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
| 1483 } | |
| 1484 | |
|
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1485 if (PrintGCDetails && Verbose) { |
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1486 // Cannot use gclog_or_tty yet. |
| 1064 | 1487 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
|
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1488 } |
| 1064 | 1489 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
| 1490 } | |
| 1491 | |
| 1492 // If the initial_heap_size has not been set with InitialHeapSize | |
| 1493 // or -Xms, then set it as fraction of the size of physical memory, | |
| 1494 // respecting the maximum and minimum sizes of the heap. | |
| 1495 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
|
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1496 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1497 |
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1498 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1499 |
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1500 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1501 |
| 1064 | 1502 julong reasonable_initial = phys_mem / InitialRAMFraction; |
| 1503 | |
|
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1504 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
| 1064 | 1505 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
| 1506 | |
| 1507 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
| 1508 | |
| 1509 if (PrintGCDetails && Verbose) { | |
| 1510 // Cannot use gclog_or_tty yet. | |
| 1511 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
|
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1512 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
|
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1513 } |
| 1064 | 1514 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
|
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1515 set_min_heap_size((uintx)reasonable_minimum); |
|
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1516 } |
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1517 } |
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1518 |
| 0 | 1519 // This must be called after ergonomics because we want bytecode rewriting |
| 1520 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1521 void Arguments::set_bytecode_flags() { | |
| 1522 // Better not attempt to store into a read-only space. | |
| 1523 if (UseSharedSpaces) { | |
| 1524 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1525 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1526 } | |
| 1527 | |
| 1528 if (!RewriteBytecodes) { | |
| 1529 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1530 } | |
| 1531 } | |
| 1532 | |
| 1533 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1534 void Arguments::set_aggressive_opts_flags() { | |
|
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1535 #ifdef COMPILER2 |
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1536 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
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1537 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
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1538 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
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1539 } |
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1540 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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1541 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
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1542 } |
|
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1543 |
|
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1544 // Feed the cache size setting into the JDK |
|
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1545 char buffer[1024]; |
|
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1546 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
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1547 add_property(buffer); |
|
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|
1548 } |
| 65 | 1549 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
| 1550 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
| 1551 } | |
|
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1552 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
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1553 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
|
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1554 } |
| 1622 | 1555 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeStringConcat)) { |
| 1556 FLAG_SET_DEFAULT(OptimizeStringConcat, true); | |
| 1557 } | |
| 1763 | 1558 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeFill)) { |
| 1559 FLAG_SET_DEFAULT(OptimizeFill, true); | |
| 1560 } | |
|
17
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6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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|
1561 #endif |
|
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|
1562 |
| 0 | 1563 if (AggressiveOpts) { |
| 61 | 1564 // Sample flag setting code |
| 1565 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1566 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1567 // } | |
| 0 | 1568 } |
| 1569 } | |
| 1570 | |
| 1571 //=========================================================================================================== | |
| 1572 // Parsing of java.compiler property | |
| 1573 | |
| 1574 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1575 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1576 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1577 // is also specified. | |
| 1578 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1579 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1580 } | |
| 1581 } | |
| 1582 | |
| 1583 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1584 _sun_java_launcher = strdup(launcher); | |
| 1585 } | |
| 1586 | |
| 1587 bool Arguments::created_by_java_launcher() { | |
| 1588 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1589 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1590 } | |
| 1591 | |
| 1592 //=========================================================================================================== | |
| 1593 // Parsing of main arguments | |
| 1594 | |
|
1244
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1595 bool Arguments::verify_interval(uintx val, uintx min, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1596 uintx max, const char* name) { |
|
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1597 // Returns true iff value is in the inclusive interval [min..max] |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1598 // false, otherwise. |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1599 if (val >= min && val <= max) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1600 return true; |
|
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1601 } |
|
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1602 jio_fprintf(defaultStream::error_stream(), |
|
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1603 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
|
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|
1604 " and " UINTX_FORMAT "\n", |
|
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1605 name, val, min, max); |
|
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1606 return false; |
|
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1607 } |
|
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1608 |
|
1744
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1609 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1610 // Returns true if given value is greater than specified min threshold |
|
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1611 // false, otherwise. |
|
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1612 if (val >= min ) { |
|
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1613 return true; |
|
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1614 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1615 jio_fprintf(defaultStream::error_stream(), |
|
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1616 "%s of " INTX_FORMAT " is invalid; must be greater than " INTX_FORMAT "\n", |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
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|
1617 name, val, min); |
|
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1618 return false; |
|
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1619 } |
|
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1620 |
| 0 | 1621 bool Arguments::verify_percentage(uintx value, const char* name) { |
| 1622 if (value <= 100) { | |
| 1623 return true; | |
| 1624 } | |
| 1625 jio_fprintf(defaultStream::error_stream(), | |
| 1626 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1627 name, value); | |
| 1628 return false; | |
| 1629 } | |
| 1630 | |
| 1064 | 1631 static void force_serial_gc() { |
| 0 | 1632 FLAG_SET_DEFAULT(UseSerialGC, true); |
| 1633 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1634 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
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932
diff
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|
1635 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
| 0 | 1636 FLAG_SET_DEFAULT(UseParallelGC, false); |
| 1637 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
342
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6711316: Open source the Garbage-First garbage collector
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|
1638 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1639 } |
| 1640 | |
| 1641 static bool verify_serial_gc_flags() { | |
| 1642 return (UseSerialGC && | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
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diff
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|
1643 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
|
342
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6711316: Open source the Garbage-First garbage collector
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|
1644 UseParallelGC || UseParallelOldGC)); |
| 0 | 1645 } |
| 1646 | |
|
10
28372612af5e
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|
1647 // Check consistency of GC selection |
|
28372612af5e
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|
1648 bool Arguments::check_gc_consistency() { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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|
1649 bool status = true; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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|
1650 // Ensure that the user has not selected conflicting sets |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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diff
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|
1651 // of collectors. [Note: this check is merely a user convenience; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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diff
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|
1652 // collectors over-ride each other so that only a non-conflicting |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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0
diff
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|
1653 // set is selected; however what the user gets is not what they |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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parents:
0
diff
changeset
|
1654 // may have expected from the combination they asked for. It's |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
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|
1655 // better to reduce user confusion by not allowing them to |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1656 // select conflicting combinations. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1657 uint i = 0; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1658 if (UseSerialGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1659 if (UseConcMarkSweepGC || UseParNewGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1660 if (UseParallelGC || UseParallelOldGC) i++; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1661 if (UseG1GC) i++; |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
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|
1662 if (i > 1) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1663 jio_fprintf(defaultStream::error_stream(), |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1664 "Conflicting collector combinations in option list; " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1665 "please refer to the release notes for the combinations " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1666 "allowed\n"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1667 status = false; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1668 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1669 |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1670 return status; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1671 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1672 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1673 // Check stack pages settings |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1674 bool Arguments::check_stack_pages() |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1675 { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1676 bool status = true; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1677 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1678 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1679 status = status && verify_min_value(StackShadowPages, 1, "StackShadowPages"); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1680 return status; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1681 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
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|
1682 |
| 0 | 1683 // Check the consistency of vm_init_args |
| 1684 bool Arguments::check_vm_args_consistency() { | |
| 1685 // Method for adding checks for flag consistency. | |
| 1686 // The intent is to warn the user of all possible conflicts, | |
| 1687 // before returning an error. | |
| 1688 // Note: Needs platform-dependent factoring. | |
| 1689 bool status = true; | |
| 1690 | |
| 1691 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1692 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1693 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1694 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1695 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1696 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1697 extern void VM_Version_init(); | |
| 1698 VM_Version_init(); | |
| 1699 if (!VM_Version::has_v9()) { | |
| 1700 jio_fprintf(defaultStream::error_stream(), | |
| 1701 "V8 Machine detected, Server requires V9\n"); | |
| 1702 status = false; | |
| 1703 } | |
| 1704 #endif /* COMPILER2 && SPARC */ | |
| 1705 | |
| 1706 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1707 // builds so the cost of stack banging can be measured. | |
| 1708 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1709 if (!UseBoundThreads && !UseStackBanging) { | |
| 1710 jio_fprintf(defaultStream::error_stream(), | |
| 1711 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1712 | |
| 1713 status = false; | |
| 1714 } | |
| 1715 #endif | |
| 1716 | |
| 1717 if (TLABRefillWasteFraction == 0) { | |
| 1718 jio_fprintf(defaultStream::error_stream(), | |
| 1719 "TLABRefillWasteFraction should be a denominator, " | |
| 1720 "not " SIZE_FORMAT "\n", | |
| 1721 TLABRefillWasteFraction); | |
| 1722 status = false; | |
| 1723 } | |
| 1724 | |
|
10
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0
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|
1725 status = status && verify_percentage(MaxLiveObjectEvacuationRatio, |
| 0 | 1726 "MaxLiveObjectEvacuationRatio"); |
|
10
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6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1727 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1728 "AdaptiveSizePolicyWeight"); |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1729 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1730 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
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|
1731 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1732 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1733 |
| 1734 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1735 jio_fprintf(defaultStream::error_stream(), | |
| 1736 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1737 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1738 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1739 status = false; | |
| 1740 } | |
| 1741 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1742 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1743 | |
| 1744 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1745 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1746 } | |
| 1747 | |
|
483
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
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449
diff
changeset
|
1748 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1749 // Settings to encourage splitting. |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1750 if (!FLAG_IS_CMDLINE(NewRatio)) { |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1751 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1752 } |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1753 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1754 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1755 } |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1756 } |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1757 |
|
10
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6362677: Change parallel GC collector default number of parallel GC threads.
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diff
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|
1758 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1759 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1760 if (GCTimeLimit == 100) { |
| 1761 // Turn off gc-overhead-limit-exceeded checks | |
| 1762 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1763 } | |
| 1764 | |
|
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1765 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1766 |
|
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1767 // Check whether user-specified sharing option conflicts with GC or page size. |
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1768 // Both sharing and large pages are enabled by default on some platforms; |
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1769 // large pages override sharing only if explicitly set on the command line. |
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1770 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
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1771 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
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1772 UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
| 0 | 1773 if (cannot_share) { |
| 1774 // Either force sharing on by forcing the other options off, or | |
| 1775 // force sharing off. | |
| 1776 if (DumpSharedSpaces || ForceSharedSpaces) { | |
|
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1777 jio_fprintf(defaultStream::error_stream(), |
|
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1778 "Using Serial GC and default page size because of %s\n", |
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1779 ForceSharedSpaces ? "-Xshare:on" : "-Xshare:dump"); |
| 1064 | 1780 force_serial_gc(); |
|
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1781 FLAG_SET_DEFAULT(UseLargePages, false); |
| 0 | 1782 } else { |
| 1064 | 1783 if (UseSharedSpaces && Verbose) { |
|
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1784 jio_fprintf(defaultStream::error_stream(), |
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1785 "Turning off use of shared archive because of " |
| 1064 | 1786 "choice of garbage collector or large pages\n"); |
|
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1787 } |
| 0 | 1788 no_shared_spaces(); |
| 1789 } | |
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1790 } else if (UseLargePages && (UseSharedSpaces || DumpSharedSpaces)) { |
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1791 FLAG_SET_DEFAULT(UseLargePages, false); |
| 0 | 1792 } |
| 1793 | |
|
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1794 status = status && check_gc_consistency(); |
|
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1795 status = status && check_stack_pages(); |
| 0 | 1796 |
| 1797 if (_has_alloc_profile) { | |
| 1798 if (UseParallelGC || UseParallelOldGC) { | |
| 1799 jio_fprintf(defaultStream::error_stream(), | |
| 1800 "error: invalid argument combination.\n" | |
| 1801 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1802 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1803 status = false; | |
| 1804 } | |
| 1805 if (UseConcMarkSweepGC) { | |
| 1806 jio_fprintf(defaultStream::error_stream(), | |
| 1807 "error: invalid argument combination.\n" | |
| 1808 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1809 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1810 status = false; | |
| 1811 } | |
| 1812 } | |
| 1813 | |
| 1814 if (CMSIncrementalMode) { | |
| 1815 if (!UseConcMarkSweepGC) { | |
| 1816 jio_fprintf(defaultStream::error_stream(), | |
| 1817 "error: invalid argument combination.\n" | |
| 1818 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1819 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1820 status = false; | |
| 1821 } else { | |
|
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1822 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1823 "CMSIncrementalDutyCycle"); |
|
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1824 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1825 "CMSIncrementalDutyCycleMin"); |
|
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1826 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1827 "CMSIncrementalSafetyFactor"); |
|
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1828 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1829 "CMSIncrementalOffset"); |
|
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1830 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1831 "CMSExpAvgFactor"); |
| 1832 // If it was not set on the command line, set | |
| 1833 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1834 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1835 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1836 } | |
| 1837 } | |
| 1838 } | |
| 1839 | |
| 1840 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1841 // insists that we hold the requisite locks so that the iteration is | |
| 1842 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1843 // yet have a good way of acquiring and releasing these locks, | |
| 1844 // which are not visible at the CollectedHeap level. We want to | |
| 1845 // be able to acquire these locks and then do the iteration rather | |
| 1846 // than just disable the lock verification. This will be fixed under | |
| 1847 // bug 4788986. | |
| 1848 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1849 if (VerifyGCStartAt == 0) { | |
| 1850 warning("Heap verification at start-up disabled " | |
| 1851 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1852 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1853 } | |
| 1854 if (VerifyBeforeExit) { | |
| 1855 warning("Heap verification at shutdown disabled " | |
| 1856 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1857 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1858 } | |
| 1859 } | |
| 1860 | |
| 1861 // Note: only executed in non-PRODUCT mode | |
| 1862 if (!UseAsyncConcMarkSweepGC && | |
| 1863 (ExplicitGCInvokesConcurrent || | |
| 1864 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1865 jio_fprintf(defaultStream::error_stream(), | |
| 1866 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1867 " with -UseAsyncConcMarkSweepGC"); | |
| 1868 status = false; | |
| 1869 } | |
| 1870 | |
|
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1871 if (UseG1GC) { |
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1872 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1873 "InitiatingHeapOccupancyPercent"); |
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1874 } |
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1875 |
|
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1876 status = status && verify_interval(RefDiscoveryPolicy, |
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1877 ReferenceProcessor::DiscoveryPolicyMin, |
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1878 ReferenceProcessor::DiscoveryPolicyMax, |
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1879 "RefDiscoveryPolicy"); |
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1880 |
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1881 // Limit the lower bound of this flag to 1 as it is used in a division |
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1882 // expression. |
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1883 status = status && verify_interval(TLABWasteTargetPercent, |
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1884 1, 100, "TLABWasteTargetPercent"); |
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1885 |
|
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1886 status = status && verify_object_alignment(); |
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1887 |
| 0 | 1888 return status; |
| 1889 } | |
| 1890 | |
| 1891 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1892 const char* option_type) { | |
| 1893 if (ignore) return false; | |
| 1894 | |
| 1895 const char* spacer = " "; | |
| 1896 if (option_type == NULL) { | |
| 1897 option_type = ++spacer; // Set both to the empty string. | |
| 1898 } | |
| 1899 | |
| 1900 if (os::obsolete_option(option)) { | |
| 1901 jio_fprintf(defaultStream::error_stream(), | |
| 1902 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1903 option->optionString); | |
| 1904 return false; | |
| 1905 } else { | |
| 1906 jio_fprintf(defaultStream::error_stream(), | |
| 1907 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 1908 option->optionString); | |
| 1909 return true; | |
| 1910 } | |
| 1911 } | |
| 1912 | |
| 1913 static const char* user_assertion_options[] = { | |
| 1914 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 1915 }; | |
| 1916 | |
| 1917 static const char* system_assertion_options[] = { | |
| 1918 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 1919 }; | |
| 1920 | |
| 1921 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 1922 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 1923 // the option must match exactly. | |
| 1924 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 1925 bool tail_allowed) { | |
| 1926 for (/* empty */; *names != NULL; ++names) { | |
| 1927 if (match_option(option, *names, tail)) { | |
| 1928 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 1929 return true; | |
| 1930 } | |
| 1931 } | |
| 1932 } | |
| 1933 return false; | |
| 1934 } | |
| 1935 | |
| 1284 | 1936 bool Arguments::parse_uintx(const char* value, |
| 1937 uintx* uintx_arg, | |
| 1938 uintx min_size) { | |
| 1939 | |
| 1940 // Check the sign first since atomull() parses only unsigned values. | |
| 1941 bool value_is_positive = !(*value == '-'); | |
| 1942 | |
| 1943 if (value_is_positive) { | |
| 1944 julong n; | |
| 1945 bool good_return = atomull(value, &n); | |
| 1946 if (good_return) { | |
| 1947 bool above_minimum = n >= min_size; | |
| 1948 bool value_is_too_large = n > max_uintx; | |
| 1949 | |
| 1950 if (above_minimum && !value_is_too_large) { | |
| 1951 *uintx_arg = n; | |
| 1952 return true; | |
| 1953 } | |
| 1954 } | |
| 1955 } | |
| 1956 return false; | |
| 1957 } | |
| 1958 | |
| 0 | 1959 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
|
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1960 julong* long_arg, |
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1961 julong min_size) { |
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1962 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 1963 return check_memory_size(*long_arg, min_size); |
| 1964 } | |
| 1965 | |
| 1966 // Parse JavaVMInitArgs structure | |
| 1967 | |
| 1968 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 1969 // For components of the system classpath. | |
| 1970 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 1971 bool scp_assembly_required = false; | |
| 1972 | |
| 1973 // Save default settings for some mode flags | |
| 1974 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 1975 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 1976 Arguments::_ClipInlining = ClipInlining; | |
| 1977 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 1978 | |
| 1979 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
| 1980 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 1981 if (result != JNI_OK) { | |
| 1982 return result; | |
| 1983 } | |
| 1984 | |
| 1985 // Parse JavaVMInitArgs structure passed in | |
| 1986 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 1987 if (result != JNI_OK) { | |
| 1988 return result; | |
| 1989 } | |
| 1990 | |
|
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1991 if (AggressiveOpts) { |
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1992 // Insert alt-rt.jar between user-specified bootclasspath |
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1993 // prefix and the default bootclasspath. os::set_boot_path() |
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1994 // uses meta_index_dir as the default bootclasspath directory. |
|
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1995 const char* altclasses_jar = "alt-rt.jar"; |
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1996 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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1997 strlen(altclasses_jar); |
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1998 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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1999 strcpy(altclasses_path, get_meta_index_dir()); |
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2000 strcat(altclasses_path, altclasses_jar); |
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2001 scp.add_suffix_to_prefix(altclasses_path); |
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2002 scp_assembly_required = true; |
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2003 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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2004 } |
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|
2005 |
| 0 | 2006 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 2007 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 2008 if (result != JNI_OK) { | |
| 2009 return result; | |
| 2010 } | |
| 2011 | |
| 2012 // Do final processing now that all arguments have been parsed | |
| 2013 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 2014 if (result != JNI_OK) { | |
| 2015 return result; | |
| 2016 } | |
| 2017 | |
| 2018 return JNI_OK; | |
| 2019 } | |
| 2020 | |
| 2021 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 2022 SysClassPath* scp_p, | |
| 2023 bool* scp_assembly_required_p, | |
| 2024 FlagValueOrigin origin) { | |
| 2025 // Remaining part of option string | |
| 2026 const char* tail; | |
| 2027 | |
| 2028 // iterate over arguments | |
| 2029 for (int index = 0; index < args->nOptions; index++) { | |
| 2030 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 2031 | |
| 2032 const JavaVMOption* option = args->options + index; | |
| 2033 | |
| 2034 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 2035 !match_option(option, "-Dsun.java.command", &tail) && | |
| 2036 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 2037 | |
| 2038 // add all jvm options to the jvm_args string. This string | |
| 2039 // is used later to set the java.vm.args PerfData string constant. | |
| 2040 // the -Djava.class.path and the -Dsun.java.command options are | |
| 2041 // omitted from jvm_args string as each have their own PerfData | |
| 2042 // string constant object. | |
| 2043 build_jvm_args(option->optionString); | |
| 2044 } | |
| 2045 | |
| 2046 // -verbose:[class/gc/jni] | |
| 2047 if (match_option(option, "-verbose", &tail)) { | |
| 2048 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 2049 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 2050 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2051 } else if (!strcmp(tail, ":gc")) { | |
| 2052 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2053 } else if (!strcmp(tail, ":jni")) { | |
| 2054 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 2055 } | |
| 2056 // -da / -ea / -disableassertions / -enableassertions | |
| 2057 // These accept an optional class/package name separated by a colon, e.g., | |
| 2058 // -da:java.lang.Thread. | |
| 2059 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 2060 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2061 if (*tail == '\0') { | |
| 2062 JavaAssertions::setUserClassDefault(enable); | |
| 2063 } else { | |
| 2064 assert(*tail == ':', "bogus match by match_option()"); | |
| 2065 JavaAssertions::addOption(tail + 1, enable); | |
| 2066 } | |
| 2067 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 2068 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 2069 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2070 JavaAssertions::setSystemClassDefault(enable); | |
| 2071 // -bootclasspath: | |
| 2072 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 2073 scp_p->reset_path(tail); | |
| 2074 *scp_assembly_required_p = true; | |
| 2075 // -bootclasspath/a: | |
| 2076 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 2077 scp_p->add_suffix(tail); | |
| 2078 *scp_assembly_required_p = true; | |
| 2079 // -bootclasspath/p: | |
| 2080 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 2081 scp_p->add_prefix(tail); | |
| 2082 *scp_assembly_required_p = true; | |
| 2083 // -Xrun | |
| 2084 } else if (match_option(option, "-Xrun", &tail)) { | |
|
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2085 if (tail != NULL) { |
| 0 | 2086 const char* pos = strchr(tail, ':'); |
| 2087 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2088 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2089 name[len] = '\0'; | |
| 2090 | |
| 2091 char *options = NULL; | |
| 2092 if(pos != NULL) { | |
| 2093 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 2094 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 2095 } | |
| 2096 #ifdef JVMTI_KERNEL | |
| 2097 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2098 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2099 } else | |
| 2100 #endif // JVMTI_KERNEL | |
| 2101 add_init_library(name, options); | |
| 2102 } | |
| 2103 // -agentlib and -agentpath | |
| 2104 } else if (match_option(option, "-agentlib:", &tail) || | |
| 2105 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 2106 if(tail != NULL) { | |
| 2107 const char* pos = strchr(tail, '='); | |
| 2108 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2109 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2110 name[len] = '\0'; | |
| 2111 | |
| 2112 char *options = NULL; | |
| 2113 if(pos != NULL) { | |
| 2114 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 2115 } | |
| 2116 #ifdef JVMTI_KERNEL | |
| 2117 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2118 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2119 } else | |
| 2120 #endif // JVMTI_KERNEL | |
| 2121 add_init_agent(name, options, is_absolute_path); | |
| 2122 | |
| 2123 } | |
| 2124 // -javaagent | |
| 2125 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 2126 if(tail != NULL) { | |
| 2127 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 2128 add_init_agent("instrument", options, false); | |
| 2129 } | |
| 2130 // -Xnoclassgc | |
| 2131 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 2132 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 2133 // -Xincgc: i-CMS | |
| 2134 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 2135 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2136 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 2137 // -Xnoincgc: no i-CMS | |
| 2138 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 2139 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2140 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 2141 // -Xconcgc | |
| 2142 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 2143 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2144 // -Xnoconcgc | |
| 2145 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 2146 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2147 // -Xbatch | |
| 2148 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 2149 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2150 // -Xmn for compatibility with other JVM vendors | |
| 2151 } else if (match_option(option, "-Xmn", &tail)) { | |
|
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2152 julong long_initial_eden_size = 0; |
| 0 | 2153 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 2154 if (errcode != arg_in_range) { | |
| 2155 jio_fprintf(defaultStream::error_stream(), | |
| 2156 "Invalid initial eden size: %s\n", option->optionString); | |
| 2157 describe_range_error(errcode); | |
| 2158 return JNI_EINVAL; | |
| 2159 } | |
| 1064 | 2160 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
| 2161 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
| 0 | 2162 // -Xms |
| 2163 } else if (match_option(option, "-Xms", &tail)) { | |
|
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2164 julong long_initial_heap_size = 0; |
| 0 | 2165 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 2166 if (errcode != arg_in_range) { | |
| 2167 jio_fprintf(defaultStream::error_stream(), | |
| 2168 "Invalid initial heap size: %s\n", option->optionString); | |
| 2169 describe_range_error(errcode); | |
| 2170 return JNI_EINVAL; | |
| 2171 } | |
| 1064 | 2172 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
| 0 | 2173 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2174 set_min_heap_size(InitialHeapSize); |
| 0 | 2175 // -Xmx |
| 2176 } else if (match_option(option, "-Xmx", &tail)) { | |
|
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2177 julong long_max_heap_size = 0; |
| 0 | 2178 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 2179 if (errcode != arg_in_range) { | |
| 2180 jio_fprintf(defaultStream::error_stream(), | |
| 2181 "Invalid maximum heap size: %s\n", option->optionString); | |
| 2182 describe_range_error(errcode); | |
| 2183 return JNI_EINVAL; | |
| 2184 } | |
| 1064 | 2185 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
| 0 | 2186 // Xmaxf |
| 2187 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 2188 int maxf = (int)(atof(tail) * 100); | |
| 2189 if (maxf < 0 || maxf > 100) { | |
| 2190 jio_fprintf(defaultStream::error_stream(), | |
| 2191 "Bad max heap free percentage size: %s\n", | |
| 2192 option->optionString); | |
| 2193 return JNI_EINVAL; | |
| 2194 } else { | |
| 2195 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 2196 } | |
| 2197 // Xminf | |
| 2198 } else if (match_option(option, "-Xminf", &tail)) { | |
| 2199 int minf = (int)(atof(tail) * 100); | |
| 2200 if (minf < 0 || minf > 100) { | |
| 2201 jio_fprintf(defaultStream::error_stream(), | |
| 2202 "Bad min heap free percentage size: %s\n", | |
| 2203 option->optionString); | |
| 2204 return JNI_EINVAL; | |
| 2205 } else { | |
| 2206 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 2207 } | |
| 2208 // -Xss | |
| 2209 } else if (match_option(option, "-Xss", &tail)) { | |
|
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2210 julong long_ThreadStackSize = 0; |
| 0 | 2211 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 2212 if (errcode != arg_in_range) { | |
| 2213 jio_fprintf(defaultStream::error_stream(), | |
| 2214 "Invalid thread stack size: %s\n", option->optionString); | |
| 2215 describe_range_error(errcode); | |
| 2216 return JNI_EINVAL; | |
| 2217 } | |
| 2218 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 2219 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 2220 round_to((int)long_ThreadStackSize, K) / K); | |
| 2221 // -Xoss | |
| 2222 } else if (match_option(option, "-Xoss", &tail)) { | |
| 2223 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 2224 // -Xmaxjitcodesize | |
| 2225 } else if (match_option(option, "-Xmaxjitcodesize", &tail)) { | |
|
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2226 julong long_ReservedCodeCacheSize = 0; |
| 0 | 2227 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
|
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2228 (size_t)InitialCodeCacheSize); |
| 0 | 2229 if (errcode != arg_in_range) { |
| 2230 jio_fprintf(defaultStream::error_stream(), | |
| 2231 "Invalid maximum code cache size: %s\n", | |
| 2232 option->optionString); | |
| 2233 describe_range_error(errcode); | |
| 2234 return JNI_EINVAL; | |
| 2235 } | |
| 2236 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 2237 // -green | |
| 2238 } else if (match_option(option, "-green", &tail)) { | |
| 2239 jio_fprintf(defaultStream::error_stream(), | |
| 2240 "Green threads support not available\n"); | |
| 2241 return JNI_EINVAL; | |
| 2242 // -native | |
| 2243 } else if (match_option(option, "-native", &tail)) { | |
| 2244 // HotSpot always uses native threads, ignore silently for compatibility | |
| 2245 // -Xsqnopause | |
| 2246 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 2247 // EVM option, ignore silently for compatibility | |
| 2248 // -Xrs | |
| 2249 } else if (match_option(option, "-Xrs", &tail)) { | |
| 2250 // Classic/EVM option, new functionality | |
| 2251 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 2252 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 2253 // change default internal VM signals used - lower case for back compat | |
| 2254 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 2255 // -Xoptimize | |
| 2256 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 2257 // EVM option, ignore silently for compatibility | |
| 2258 // -Xprof | |
| 2259 } else if (match_option(option, "-Xprof", &tail)) { | |
| 2260 #ifndef FPROF_KERNEL | |
| 2261 _has_profile = true; | |
| 2262 #else // FPROF_KERNEL | |
| 2263 // do we have to exit? | |
| 2264 warning("Kernel VM does not support flat profiling."); | |
| 2265 #endif // FPROF_KERNEL | |
| 2266 // -Xaprof | |
| 2267 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2268 _has_alloc_profile = true; | |
| 2269 // -Xconcurrentio | |
| 2270 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2271 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2272 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2273 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2274 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2275 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2276 | |
| 2277 // -Xinternalversion | |
| 2278 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2279 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2280 VM_Version::internal_vm_info_string()); | |
| 2281 vm_exit(0); | |
| 2282 #ifndef PRODUCT | |
| 2283 // -Xprintflags | |
| 2284 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 2285 CommandLineFlags::printFlags(); | |
| 2286 vm_exit(0); | |
| 2287 #endif | |
| 2288 // -D | |
| 2289 } else if (match_option(option, "-D", &tail)) { | |
| 2290 if (!add_property(tail)) { | |
| 2291 return JNI_ENOMEM; | |
| 2292 } | |
| 2293 // Out of the box management support | |
| 2294 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2295 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2296 } | |
| 2297 // -Xint | |
| 2298 } else if (match_option(option, "-Xint", &tail)) { | |
| 2299 set_mode_flags(_int); | |
| 2300 // -Xmixed | |
| 2301 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2302 set_mode_flags(_mixed); | |
| 2303 // -Xcomp | |
| 2304 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2305 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2306 set_mode_flags(_comp); | |
| 2307 | |
| 2308 // -Xshare:dump | |
| 2309 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2310 #ifdef TIERED | |
| 2311 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2312 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2313 #elif defined(COMPILER2) | |
| 2314 vm_exit_during_initialization( | |
| 2315 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2316 #elif defined(KERNEL) | |
| 2317 vm_exit_during_initialization( | |
| 2318 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2319 #else | |
| 2320 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2321 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2322 #endif | |
| 2323 // -Xshare:on | |
| 2324 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2325 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2326 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2327 #ifdef TIERED | |
| 2328 FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true); | |
| 2329 #endif // TIERED | |
| 2330 // -Xshare:auto | |
| 2331 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2332 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2333 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2334 // -Xshare:off | |
| 2335 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2336 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2337 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2338 | |
| 2339 // -Xverify | |
| 2340 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2341 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2342 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2343 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2344 } else if (strcmp(tail, ":remote") == 0) { | |
| 2345 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2346 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2347 } else if (strcmp(tail, ":none") == 0) { | |
| 2348 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2349 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2350 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2351 return JNI_EINVAL; | |
| 2352 } | |
| 2353 // -Xdebug | |
| 2354 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2355 // note this flag has been used, then ignore | |
| 2356 set_xdebug_mode(true); | |
| 2357 // -Xnoagent | |
| 2358 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2359 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2360 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2361 // Bind user level threads to kernel threads (Solaris only) | |
| 2362 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2363 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2364 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2365 // ostream_init_log(), when called will use this filename | |
| 2366 // to initialize a fileStream. | |
| 2367 _gc_log_filename = strdup(tail); | |
| 2368 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2369 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2370 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2371 | |
| 2372 // JNI hooks | |
| 2373 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2374 if (!strcmp(tail, ":jni")) { | |
| 2375 CheckJNICalls = true; | |
| 2376 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2377 "check")) { | |
| 2378 return JNI_EINVAL; | |
| 2379 } | |
| 2380 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2381 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2382 } else if (match_option(option, "exit", &tail)) { | |
| 2383 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2384 } else if (match_option(option, "abort", &tail)) { | |
| 2385 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2386 // -XX:+AggressiveHeap | |
| 2387 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2388 | |
| 2389 // This option inspects the machine and attempts to set various | |
| 2390 // parameters to be optimal for long-running, memory allocation | |
| 2391 // intensive jobs. It is intended for machines with large | |
| 2392 // amounts of cpu and memory. | |
| 2393 | |
| 2394 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2395 // VM, but we may not be able to represent the total physical memory | |
| 2396 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2397 // Thus, we need to make sure we're using a julong for intermediate | |
| 2398 // calculations. | |
| 2399 julong initHeapSize; | |
| 2400 julong total_memory = os::physical_memory(); | |
| 2401 | |
| 2402 if (total_memory < (julong)256*M) { | |
| 2403 jio_fprintf(defaultStream::error_stream(), | |
| 2404 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2405 vm_exit(1); | |
| 2406 } | |
| 2407 | |
| 2408 // The heap size is half of available memory, or (at most) | |
| 2409 // all of possible memory less 160mb (leaving room for the OS | |
| 2410 // when using ISM). This is the maximum; because adaptive sizing | |
| 2411 // is turned on below, the actual space used may be smaller. | |
| 2412 | |
| 2413 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2414 total_memory - (julong)160*M); | |
| 2415 | |
| 2416 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2417 // process space. The 64bit VM version of this function is a nop. | |
| 2418 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2419 | |
| 2420 // The perm gen is separate but contiguous with the | |
| 2421 // object heap (and is reserved with it) so subtract it | |
| 2422 // from the heap size. | |
| 2423 if (initHeapSize > MaxPermSize) { | |
| 2424 initHeapSize = initHeapSize - MaxPermSize; | |
| 2425 } else { | |
| 2426 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2427 } | |
| 2428 | |
| 2429 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2430 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 1064 | 2431 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
| 0 | 2432 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2433 set_min_heap_size(initHeapSize); |
| 0 | 2434 } |
| 2435 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2436 // Make the young generation 3/8ths of the total heap. | |
| 2437 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2438 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2439 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2440 } | |
| 2441 | |
| 2442 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2443 | |
| 2444 // Increase some data structure sizes for efficiency | |
| 2445 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2446 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2447 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2448 | |
| 2449 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2450 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2451 // space per-gc-thread buffers. The default is 4kw. | |
| 2452 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2453 | |
| 2454 // OldPLABSize is the size of the buffers in the old gen that | |
| 2455 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2456 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2457 // The default size is 1kw. These buffers are rarely used, since the | |
| 2458 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2459 // are occasions when there's lots of live data in the young gen | |
| 2460 // and we end up promoting some of it. We don't have a definite | |
| 2461 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2462 // is that a bigger PLAB results in retaining something like the | |
| 2463 // original allocation order after promotion, which improves mutator | |
| 2464 // locality. A minor effect may be that larger PLABs reduce the | |
| 2465 // number of PLAB allocation events during gc. The value of 8kw | |
| 2466 // was arrived at by experimenting with specjbb. | |
| 2467 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2468 | |
| 2469 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
| 2470 // a more conservative which-method-do-I-compile policy when one | |
| 2471 // of the counters maintained by the interpreter trips. The | |
| 2472 // result is reduced startup time and improved specjbb and | |
| 2473 // alacrity performance. Zero is the default, but we set it | |
| 2474 // explicitly here in case the default changes. | |
| 2475 // See runtime/compilationPolicy.*. | |
| 2476 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
| 2477 | |
| 2478 // Enable parallel GC and adaptive generation sizing | |
| 2479 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
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|
2480 FLAG_SET_DEFAULT(ParallelGCThreads, |
|
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|
2481 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2482 |
| 2483 // Encourage steady state memory management | |
| 2484 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2485 | |
| 2486 // This appears to improve mutator locality | |
| 2487 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2488 | |
| 2489 // Get around early Solaris scheduling bug | |
| 2490 // (affinity vs other jobs on system) | |
| 2491 // but disallow DR and offlining (5008695). | |
| 2492 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2493 | |
| 2494 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2495 // The last option must always win. | |
| 2496 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2497 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2498 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2499 // The last option must always win. | |
| 2500 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2501 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2502 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2503 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2504 jio_fprintf(defaultStream::error_stream(), | |
| 2505 "Please use CMSClassUnloadingEnabled in place of " | |
| 2506 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2507 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2508 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2509 jio_fprintf(defaultStream::error_stream(), | |
| 2510 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2511 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2512 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2513 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2514 jio_fprintf(defaultStream::error_stream(), | |
| 2515 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2516 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2517 // The TLE options are for compatibility with 1.3 and will be | |
| 2518 // removed without notice in a future release. These options | |
| 2519 // are not to be documented. | |
| 2520 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2521 // No longer used. | |
| 2522 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2523 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2524 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2525 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2526 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2527 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2528 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2529 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2530 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2531 // No longer used. | |
| 2532 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
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|
2533 julong long_tlab_size = 0; |
| 0 | 2534 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2535 if (errcode != arg_in_range) { | |
| 2536 jio_fprintf(defaultStream::error_stream(), | |
| 2537 "Invalid TLAB size: %s\n", option->optionString); | |
| 2538 describe_range_error(errcode); | |
| 2539 return JNI_EINVAL; | |
| 2540 } | |
| 2541 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2542 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2543 // No longer used. | |
| 2544 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2545 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2546 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2547 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2548 SOLARIS_ONLY( | |
| 2549 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2550 warning("-XX:+UsePermISM is obsolete."); | |
| 2551 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2552 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2553 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2554 ) | |
| 2555 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2556 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2557 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2558 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2559 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2560 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2561 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 2562 #ifdef SOLARIS | |
| 2563 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
| 2564 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2565 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2566 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 2567 #else // ndef SOLARIS | |
| 2568 jio_fprintf(defaultStream::error_stream(), | |
| 2569 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
| 2570 return JNI_EINVAL; | |
| 2571 #endif // ndef SOLARIS | |
| 2572 #ifdef ASSERT | |
|
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|
2573 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
| 0 | 2574 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
| 2575 // disable scavenge before parallel mark-compact | |
| 2576 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2577 #endif | |
|
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|
2578 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
| 0 | 2579 julong cms_blocks_to_claim = (julong)atol(tail); |
| 2580 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2581 jio_fprintf(defaultStream::error_stream(), | |
|
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|
2582 "Please use -XX:OldPLABSize in place of " |
|
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6631166: CMS: better heuristics when combatting fragmentation
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1074
diff
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|
2583 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
|
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1074
diff
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|
2584 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
|
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diff
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|
2585 julong cms_blocks_to_claim = (julong)atol(tail); |
|
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|
2586 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
|
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|
2587 jio_fprintf(defaultStream::error_stream(), |
|
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diff
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|
2588 "Please use -XX:OldPLABSize in place of " |
| 0 | 2589 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
|
1145
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|
2590 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
|
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|
2591 julong old_plab_size = 0; |
| 0 | 2592 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2593 if (errcode != arg_in_range) { | |
| 2594 jio_fprintf(defaultStream::error_stream(), | |
| 2595 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2596 describe_range_error(errcode); | |
| 2597 return JNI_EINVAL; | |
| 2598 } | |
|
489
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diff
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|
2599 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2600 jio_fprintf(defaultStream::error_stream(), |
| 2601 "Please use -XX:OldPLABSize in place of " | |
| 2602 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
|
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|
2603 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
|
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|
2604 julong young_plab_size = 0; |
| 0 | 2605 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2606 if (errcode != arg_in_range) { | |
| 2607 jio_fprintf(defaultStream::error_stream(), | |
| 2608 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2609 describe_range_error(errcode); | |
| 2610 return JNI_EINVAL; | |
| 2611 } | |
|
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diff
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|
2612 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2613 jio_fprintf(defaultStream::error_stream(), |
| 2614 "Please use -XX:YoungPLABSize in place of " | |
| 2615 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 1284 | 2616 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
| 2617 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
| 2618 julong stack_size = 0; | |
| 2619 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
| 2620 if (errcode != arg_in_range) { | |
| 2621 jio_fprintf(defaultStream::error_stream(), | |
| 2622 "Invalid mark stack size: %s\n", option->optionString); | |
| 2623 describe_range_error(errcode); | |
| 2624 return JNI_EINVAL; | |
| 2625 } | |
| 2626 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
| 2627 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
| 2628 julong max_stack_size = 0; | |
| 2629 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
| 2630 if (errcode != arg_in_range) { | |
| 2631 jio_fprintf(defaultStream::error_stream(), | |
| 2632 "Invalid maximum mark stack size: %s\n", | |
| 2633 option->optionString); | |
| 2634 describe_range_error(errcode); | |
| 2635 return JNI_EINVAL; | |
| 2636 } | |
| 2637 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
| 2638 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
| 2639 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
| 2640 uintx conc_threads = 0; | |
| 2641 if (!parse_uintx(tail, &conc_threads, 1)) { | |
| 2642 jio_fprintf(defaultStream::error_stream(), | |
| 2643 "Invalid concurrent threads: %s\n", option->optionString); | |
| 2644 return JNI_EINVAL; | |
| 2645 } | |
| 2646 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
|
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1074
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|
2647 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
| 0 | 2648 // Skip -XX:Flags= since that case has already been handled |
| 2649 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2650 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2651 return JNI_EINVAL; | |
| 2652 } | |
| 2653 } | |
| 2654 // Unknown option | |
| 2655 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2656 return JNI_ERR; | |
| 2657 } | |
| 2658 } | |
|
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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420
diff
changeset
|
2659 // Change the default value for flags which have different default values |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
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420
diff
changeset
|
2660 // when working with older JDKs. |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
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420
diff
changeset
|
2661 if (JDK_Version::current().compare_major(6) <= 0 && |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2662 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
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420
diff
changeset
|
2663 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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420
diff
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|
2664 } |
|
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
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1628
diff
changeset
|
2665 #ifdef LINUX |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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parents:
1628
diff
changeset
|
2666 if (JDK_Version::current().compare_major(6) <= 0 && |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
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1628
diff
changeset
|
2667 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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1628
diff
changeset
|
2668 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
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1628
diff
changeset
|
2669 } |
|
3d90023429ec
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1628
diff
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|
2670 #endif // LINUX |
| 0 | 2671 return JNI_OK; |
| 2672 } | |
| 2673 | |
| 2674 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2675 // This must be done after all -D arguments have been processed. | |
| 2676 scp_p->expand_endorsed(); | |
| 2677 | |
| 2678 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2679 // Assemble the bootclasspath elements into the final path. | |
| 2680 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2681 } | |
| 2682 | |
| 2683 // This must be done after all arguments have been processed. | |
| 2684 // java_compiler() true means set to "NONE" or empty. | |
| 2685 if (java_compiler() && !xdebug_mode()) { | |
| 2686 // For backwards compatibility, we switch to interpreted mode if | |
| 2687 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2688 // not specified. | |
| 2689 set_mode_flags(_int); | |
| 2690 } | |
| 2691 if (CompileThreshold == 0) { | |
| 2692 set_mode_flags(_int); | |
| 2693 } | |
| 2694 | |
| 2695 #ifndef COMPILER2 | |
| 2696 // Don't degrade server performance for footprint | |
| 2697 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2698 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2699 // No need for large granularity pages w/small heaps. | |
| 2700 // Note that large pages are enabled/disabled for both the | |
| 2701 // Java heap and the code cache. | |
| 2702 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2703 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2704 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2705 } | |
|
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|
2706 |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
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1188
diff
changeset
|
2707 // Tiered compilation is undefined with C1. |
|
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
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1188
diff
changeset
|
2708 TieredCompilation = false; |
| 0 | 2709 #else |
| 2710 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2711 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2712 } | |
|
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|
2713 // Temporary disable bulk zeroing reduction with G1. See CR 6627983. |
|
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diff
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|
2714 if (UseG1GC) { |
|
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|
2715 FLAG_SET_DEFAULT(ReduceBulkZeroing, false); |
|
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|
2716 } |
| 0 | 2717 #endif |
| 2718 | |
|
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|
2719 // If we are running in a headless jre, force java.awt.headless property |
|
126ea7725993
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diff
changeset
|
2720 // to be true unless the property has already been set. |
|
126ea7725993
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diff
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|
2721 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
|
126ea7725993
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|
2722 if (os::is_headless_jre()) { |
|
126ea7725993
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bobv
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diff
changeset
|
2723 const char* headless = Arguments::get_property("java.awt.headless"); |
|
126ea7725993
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1679
diff
changeset
|
2724 if (headless == NULL) { |
|
126ea7725993
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1679
diff
changeset
|
2725 char envbuffer[128]; |
|
126ea7725993
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diff
changeset
|
2726 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
|
126ea7725993
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bobv
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1679
diff
changeset
|
2727 if (!add_property("java.awt.headless=true")) { |
|
126ea7725993
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bobv
parents:
1679
diff
changeset
|
2728 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2729 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2730 } else { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2731 char buffer[256]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2732 strcpy(buffer, "java.awt.headless="); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2733 strcat(buffer, envbuffer); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2734 if (!add_property(buffer)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2735 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2736 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2737 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2738 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2739 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2740 |
| 0 | 2741 if (!check_vm_args_consistency()) { |
| 2742 return JNI_ERR; | |
| 2743 } | |
| 2744 | |
| 2745 return JNI_OK; | |
| 2746 } | |
| 2747 | |
| 2748 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2749 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2750 scp_assembly_required_p); | |
| 2751 } | |
| 2752 | |
| 2753 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2754 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2755 scp_assembly_required_p); | |
| 2756 } | |
| 2757 | |
| 2758 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2759 const int N_MAX_OPTIONS = 64; | |
| 2760 const int OPTION_BUFFER_SIZE = 1024; | |
| 2761 char buffer[OPTION_BUFFER_SIZE]; | |
| 2762 | |
| 2763 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2764 // Don't check this variable if user has special privileges | |
| 2765 // (e.g. unix su command). | |
| 2766 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2767 !os::have_special_privileges()) { | |
| 2768 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2769 jio_fprintf(defaultStream::error_stream(), | |
| 2770 "Picked up %s: %s\n", name, buffer); | |
| 2771 char* rd = buffer; // pointer to the input string (rd) | |
| 2772 int i; | |
| 2773 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2774 while (isspace(*rd)) rd++; // skip whitespace | |
| 2775 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2776 | |
| 2777 // The output, option string, overwrites the input string. | |
| 2778 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2779 // input string (rd). | |
| 2780 char* wrt = rd; | |
| 2781 | |
| 2782 options[i++].optionString = wrt; // Fill in option | |
| 2783 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2784 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2785 int quote = *rd; // matching quote to look for | |
| 2786 rd++; // don't copy open quote | |
| 2787 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2788 if (*rd == 0) { // string termination means unmatched string | |
| 2789 jio_fprintf(defaultStream::error_stream(), | |
| 2790 "Unmatched quote in %s\n", name); | |
| 2791 return JNI_ERR; | |
| 2792 } | |
| 2793 *wrt++ = *rd++; // copy to option string | |
| 2794 } | |
| 2795 rd++; // don't copy close quote | |
| 2796 } else { | |
| 2797 *wrt++ = *rd++; // copy to option string | |
| 2798 } | |
| 2799 } | |
| 2800 // Need to check if we're done before writing a NULL, | |
| 2801 // because the write could be to the byte that rd is pointing to. | |
| 2802 if (*rd++ == 0) { | |
| 2803 *wrt = 0; | |
| 2804 break; | |
| 2805 } | |
| 2806 *wrt = 0; // Zero terminate option | |
| 2807 } | |
| 2808 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2809 JavaVMInitArgs vm_args; | |
| 2810 vm_args.version = JNI_VERSION_1_2; | |
| 2811 vm_args.options = options; | |
| 2812 vm_args.nOptions = i; | |
| 564 | 2813 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2814 |
| 2815 if (PrintVMOptions) { | |
| 2816 const char* tail; | |
| 2817 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2818 const JavaVMOption *option = vm_args.options + i; | |
| 2819 if (match_option(option, "-XX:", &tail)) { | |
| 2820 logOption(tail); | |
| 2821 } | |
| 2822 } | |
| 2823 } | |
| 2824 | |
| 2825 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2826 } | |
| 2827 return JNI_OK; | |
| 2828 } | |
| 2829 | |
| 2830 // Parse entry point called from JNI_CreateJavaVM | |
| 2831 | |
| 2832 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2833 | |
| 2834 // Sharing support | |
| 2835 // Construct the path to the archive | |
| 2836 char jvm_path[JVM_MAXPATHLEN]; | |
| 2837 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2838 #ifdef TIERED | |
| 2839 if (strstr(jvm_path, "client") != NULL) { | |
| 2840 force_client_mode = true; | |
| 2841 } | |
| 2842 #endif // TIERED | |
| 2843 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2844 if (end != NULL) *end = '\0'; | |
| 2845 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2846 strlen(os::file_separator()) + 20); | |
| 2847 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2848 strcpy(shared_archive_path, jvm_path); | |
| 2849 strcat(shared_archive_path, os::file_separator()); | |
| 2850 strcat(shared_archive_path, "classes"); | |
| 2851 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2852 strcat(shared_archive_path, ".jsa"); | |
| 2853 SharedArchivePath = shared_archive_path; | |
| 2854 | |
| 2855 // Remaining part of option string | |
| 2856 const char* tail; | |
| 2857 | |
| 2858 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2859 bool settings_file_specified = false; | |
| 564 | 2860 const char* flags_file; |
| 0 | 2861 int index; |
| 2862 for (index = 0; index < args->nOptions; index++) { | |
| 2863 const JavaVMOption *option = args->options + index; | |
| 2864 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2865 flags_file = tail; |
| 0 | 2866 settings_file_specified = true; |
| 2867 } | |
| 2868 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2869 PrintVMOptions = true; | |
| 2870 } | |
|
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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196
diff
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|
2871 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
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|
2872 PrintVMOptions = false; |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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196
diff
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|
2873 } |
| 564 | 2874 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2875 IgnoreUnrecognizedVMOptions = true; | |
| 2876 } | |
| 2877 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2878 IgnoreUnrecognizedVMOptions = false; | |
| 2879 } | |
| 1150 | 2880 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
| 2881 CommandLineFlags::printFlags(); | |
| 2882 vm_exit(0); | |
| 2883 } | |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2884 |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2885 #ifndef PRODUCT |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2886 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2887 CommandLineFlags::printFlags(true); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2888 vm_exit(0); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2889 } |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2890 #endif |
| 564 | 2891 } |
| 2892 | |
| 2893 if (IgnoreUnrecognizedVMOptions) { | |
| 2894 // uncast const to modify the flag args->ignoreUnrecognized | |
| 2895 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 2896 } | |
| 2897 | |
| 2898 // Parse specified settings file | |
| 2899 if (settings_file_specified) { | |
| 2900 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 2901 return JNI_EINVAL; | |
| 2902 } | |
| 0 | 2903 } |
| 2904 | |
| 2905 // Parse default .hotspotrc settings file | |
| 2906 if (!settings_file_specified) { | |
| 2907 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 2908 return JNI_EINVAL; | |
| 2909 } | |
| 2910 } | |
| 2911 | |
| 2912 if (PrintVMOptions) { | |
| 2913 for (index = 0; index < args->nOptions; index++) { | |
| 2914 const JavaVMOption *option = args->options + index; | |
| 2915 if (match_option(option, "-XX:", &tail)) { | |
| 2916 logOption(tail); | |
| 2917 } | |
| 2918 } | |
| 2919 } | |
| 2920 | |
| 2921 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 2922 jint result = parse_vm_init_args(args); | |
| 2923 if (result != JNI_OK) { | |
| 2924 return result; | |
| 2925 } | |
| 2926 | |
| 2927 #ifndef PRODUCT | |
| 2928 if (TraceBytecodesAt != 0) { | |
| 2929 TraceBytecodes = true; | |
| 2930 } | |
| 2931 if (CountCompiledCalls) { | |
| 2932 if (UseCounterDecay) { | |
| 2933 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 2934 UseCounterDecay = false; | |
| 2935 } | |
| 2936 } | |
| 2937 #endif // PRODUCT | |
| 2938 | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2939 if (EnableInvokeDynamic && !EnableMethodHandles) { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2940 if (!FLAG_IS_DEFAULT(EnableMethodHandles)) { |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2941 warning("forcing EnableMethodHandles true because EnableInvokeDynamic is true"); |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2942 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2943 EnableMethodHandles = true; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2944 } |
| 710 | 2945 if (EnableMethodHandles && !AnonymousClasses) { |
| 2946 if (!FLAG_IS_DEFAULT(AnonymousClasses)) { | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2947 warning("forcing AnonymousClasses true because EnableMethodHandles is true"); |
| 710 | 2948 } |
| 2949 AnonymousClasses = true; | |
| 2950 } | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2951 if ((EnableMethodHandles || AnonymousClasses) && ScavengeRootsInCode == 0) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2952 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2953 warning("forcing ScavengeRootsInCode non-zero because EnableMethodHandles or AnonymousClasses is true"); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2954 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2955 ScavengeRootsInCode = 1; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2956 } |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2957 #ifdef COMPILER2 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2958 if (EnableInvokeDynamic && DoEscapeAnalysis) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2959 // TODO: We need to find rules for invokedynamic and EA. For now, |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2960 // simply disable EA by default. |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2961 if (FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2962 DoEscapeAnalysis = false; |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2963 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2964 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2965 #endif |
| 710 | 2966 |
| 0 | 2967 if (PrintGCDetails) { |
| 2968 // Turn on -verbose:gc options as well | |
| 2969 PrintGC = true; | |
| 2970 } | |
| 2971 | |
| 1783 | 2972 #if defined(_LP64) && defined(COMPILER1) && !defined(TIERED) |
| 1060 | 2973 UseCompressedOops = false; |
| 2974 #endif | |
| 2975 | |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
2976 // Set object alignment values. |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
2977 set_object_alignment(); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
2978 |
| 0 | 2979 #ifdef SERIALGC |
| 1064 | 2980 force_serial_gc(); |
| 0 | 2981 #endif // SERIALGC |
| 2982 #ifdef KERNEL | |
| 2983 no_shared_spaces(); | |
| 2984 #endif // KERNEL | |
| 2985 | |
| 2986 // Set flags based on ergonomics. | |
| 2987 set_ergonomics_flags(); | |
| 2988 | |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2989 #ifdef _LP64 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2990 // XXX JSR 292 currently does not support compressed oops. |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2991 if (EnableMethodHandles && UseCompressedOops) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2992 if (FLAG_IS_DEFAULT(UseCompressedOops) || FLAG_IS_ERGO(UseCompressedOops)) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2993 UseCompressedOops = false; |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2994 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2995 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2996 #endif // _LP64 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2997 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
2998 // Check the GC selections again. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
2999 if (!check_gc_consistency()) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3000 return JNI_EINVAL; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3001 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3002 |
| 1783 | 3003 if (TieredCompilation) { |
| 3004 set_tiered_flags(); | |
| 3005 } else { | |
| 3006 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
| 3007 if (CompilationPolicyChoice >= 2) { | |
| 3008 vm_exit_during_initialization( | |
| 3009 "Incompatible compilation policy selected", NULL); | |
| 3010 } | |
| 3011 } | |
| 3012 | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3013 #ifndef KERNEL |
| 1064 | 3014 if (UseConcMarkSweepGC) { |
| 3015 // Set flags for CMS and ParNew. Check UseConcMarkSweep first | |
| 3016 // to ensure that when both UseConcMarkSweepGC and UseParNewGC | |
| 3017 // are true, we don't call set_parnew_gc_flags() as well. | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3018 set_cms_and_parnew_gc_flags(); |
| 1064 | 3019 } else { |
| 3020 // Set heap size based on available physical memory | |
| 3021 set_heap_size(); | |
| 3022 // Set per-collector flags | |
| 3023 if (UseParallelGC || UseParallelOldGC) { | |
| 3024 set_parallel_gc_flags(); | |
| 3025 } else if (UseParNewGC) { | |
| 3026 set_parnew_gc_flags(); | |
| 3027 } else if (UseG1GC) { | |
| 3028 set_g1_gc_flags(); | |
| 3029 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3030 } |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3031 #endif // KERNEL |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3032 |
| 0 | 3033 #ifdef SERIALGC |
| 3034 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 3035 #endif // SERIALGC | |
| 3036 | |
| 3037 // Set bytecode rewriting flags | |
| 3038 set_bytecode_flags(); | |
| 3039 | |
| 3040 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 3041 set_aggressive_opts_flags(); | |
| 3042 | |
| 3043 #ifdef CC_INTERP | |
| 1131 | 3044 // Clear flags not supported by the C++ interpreter |
| 3045 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
| 0 | 3046 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
| 1131 | 3047 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
| 3048 #endif // CC_INTERP | |
| 3049 | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3050 #ifdef COMPILER2 |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3051 if (!UseBiasedLocking || EmitSync != 0) { |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3052 UseOptoBiasInlining = false; |
|
a1980da045cc
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diff
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|
3053 } |
|
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diff
changeset
|
3054 #endif |
|
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416
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|
3055 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
changeset
|
3056 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
|
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diff
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|
3057 warning("PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output"); |
|
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diff
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|
3058 DebugNonSafepoints = true; |
|
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jrose
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diff
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|
3059 } |
|
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jrose
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diff
changeset
|
3060 |
|
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
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diff
changeset
|
3061 #ifndef PRODUCT |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
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diff
changeset
|
3062 if (CompileTheWorld) { |
|
99af867dfa05
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kvn
parents:
1161
diff
changeset
|
3063 // Force NmethodSweeper to sweep whole CodeCache each time. |
|
99af867dfa05
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kvn
parents:
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diff
changeset
|
3064 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
|
99af867dfa05
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diff
changeset
|
3065 NmethodSweepFraction = 1; |
|
99af867dfa05
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diff
changeset
|
3066 } |
|
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1161
diff
changeset
|
3067 } |
|
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1161
diff
changeset
|
3068 #endif |
|
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|
3069 |
| 0 | 3070 if (PrintCommandLineFlags) { |
| 3071 CommandLineFlags::printSetFlags(); | |
| 3072 } | |
| 3073 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3074 // Apply CPU specific policy for the BiasedLocking |
|
126ea7725993
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bobv
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1679
diff
changeset
|
3075 if (UseBiasedLocking) { |
|
126ea7725993
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1679
diff
changeset
|
3076 if (!VM_Version::use_biased_locking() && |
|
126ea7725993
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bobv
parents:
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diff
changeset
|
3077 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
|
126ea7725993
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parents:
1679
diff
changeset
|
3078 UseBiasedLocking = false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
diff
changeset
|
3079 } |
|
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1679
diff
changeset
|
3080 } |
|
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|
3081 |
| 0 | 3082 return JNI_OK; |
| 3083 } | |
| 3084 | |
| 3085 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 3086 int count = 0; | |
| 3087 while(pl != NULL) { | |
| 3088 count++; | |
| 3089 pl = pl->next(); | |
| 3090 } | |
| 3091 return count; | |
| 3092 } | |
| 3093 | |
| 3094 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 3095 assert(key != NULL, "just checking"); | |
| 3096 SystemProperty* prop; | |
| 3097 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 3098 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 3099 } | |
| 3100 return NULL; | |
| 3101 } | |
| 3102 | |
| 3103 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 3104 int count = 0; | |
| 3105 const char* ret_val = NULL; | |
| 3106 | |
| 3107 while(pl != NULL) { | |
| 3108 if(count >= index) { | |
| 3109 ret_val = pl->key(); | |
| 3110 break; | |
| 3111 } | |
| 3112 count++; | |
| 3113 pl = pl->next(); | |
| 3114 } | |
| 3115 | |
| 3116 return ret_val; | |
| 3117 } | |
| 3118 | |
| 3119 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 3120 int count = 0; | |
| 3121 char* ret_val = NULL; | |
| 3122 | |
| 3123 while(pl != NULL) { | |
| 3124 if(count >= index) { | |
| 3125 ret_val = pl->value(); | |
| 3126 break; | |
| 3127 } | |
| 3128 count++; | |
| 3129 pl = pl->next(); | |
| 3130 } | |
| 3131 | |
| 3132 return ret_val; | |
| 3133 } | |
| 3134 | |
| 3135 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 3136 SystemProperty* p = *plist; | |
| 3137 if (p == NULL) { | |
| 3138 *plist = new_p; | |
| 3139 } else { | |
| 3140 while (p->next() != NULL) { | |
| 3141 p = p->next(); | |
| 3142 } | |
| 3143 p->set_next(new_p); | |
| 3144 } | |
| 3145 } | |
| 3146 | |
| 3147 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 3148 if (plist == NULL) | |
| 3149 return; | |
| 3150 | |
| 3151 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 3152 PropertyList_add(plist, new_p); | |
| 3153 } | |
| 3154 | |
| 3155 // This add maintains unique property key in the list. | |
| 691 | 3156 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 3157 if (plist == NULL) |
| 3158 return; | |
| 3159 | |
| 3160 // If property key exist then update with new value. | |
| 3161 SystemProperty* prop; | |
| 3162 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 3163 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 3164 if (append) { |
| 3165 prop->append_value(v); | |
| 3166 } else { | |
| 3167 prop->set_value(v); | |
| 3168 } | |
| 0 | 3169 return; |
| 3170 } | |
| 3171 } | |
| 3172 | |
| 3173 PropertyList_add(plist, k, v); | |
| 3174 } | |
| 3175 | |
| 3176 #ifdef KERNEL | |
| 3177 char *Arguments::get_kernel_properties() { | |
| 3178 // Find properties starting with kernel and append them to string | |
| 3179 // We need to find out how long they are first because the URL's that they | |
| 3180 // might point to could get long. | |
| 3181 int length = 0; | |
| 3182 SystemProperty* prop; | |
| 3183 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3184 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3185 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 3186 } | |
| 3187 } | |
| 3188 // Add one for null terminator. | |
| 3189 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 3190 if (length != 0) { | |
| 3191 int pos = 0; | |
| 3192 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3193 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3194 jio_snprintf(&props[pos], length-pos, | |
| 3195 "-D%s=%s ", prop->key(), prop->value()); | |
| 3196 pos = strlen(props); | |
| 3197 } | |
| 3198 } | |
| 3199 } | |
| 3200 // null terminate props in case of null | |
| 3201 props[length] = '\0'; | |
| 3202 return props; | |
| 3203 } | |
| 3204 #endif // KERNEL | |
| 3205 | |
| 3206 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 3207 // Returns true if all of the source pointed by src has been copied over to | |
| 3208 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 3209 // Notes: | |
| 3210 // 1. If the length (buflen) of the destination buffer excluding the | |
| 3211 // NULL terminator character is not long enough for holding the expanded | |
| 3212 // pid characters, it also returns false instead of returning the partially | |
| 3213 // expanded one. | |
| 3214 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 3215 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 3216 char* buf, size_t buflen) { | |
| 3217 const char* p = src; | |
| 3218 char* b = buf; | |
| 3219 const char* src_end = &src[srclen]; | |
| 3220 char* buf_end = &buf[buflen - 1]; | |
| 3221 | |
| 3222 while (p < src_end && b < buf_end) { | |
| 3223 if (*p == '%') { | |
| 3224 switch (*(++p)) { | |
| 3225 case '%': // "%%" ==> "%" | |
| 3226 *b++ = *p++; | |
| 3227 break; | |
| 3228 case 'p': { // "%p" ==> current process id | |
| 3229 // buf_end points to the character before the last character so | |
| 3230 // that we could write '\0' to the end of the buffer. | |
| 3231 size_t buf_sz = buf_end - b + 1; | |
| 3232 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 3233 | |
| 3234 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 3235 // the expanded pid, returns false. | |
| 3236 if (ret < 0 || ret >= (int)buf_sz) { | |
| 3237 return false; | |
| 3238 } else { | |
| 3239 b += ret; | |
| 3240 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 3241 if (p == src_end && b == buf_end + 1) { | |
| 3242 // reach the end of the buffer. | |
| 3243 return true; | |
| 3244 } | |
| 3245 } | |
| 3246 p++; | |
| 3247 break; | |
| 3248 } | |
| 3249 default : | |
| 3250 *b++ = '%'; | |
| 3251 } | |
| 3252 } else { | |
| 3253 *b++ = *p++; | |
| 3254 } | |
| 3255 } | |
| 3256 *b = '\0'; | |
| 3257 return (p == src_end); // return false if not all of the source was copied | |
| 3258 } |