Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 2362:a2c2eac1ca62
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Reviewed-by: phh, kvn
| author | jcoomes |
|---|---|
| date | Sun, 06 Mar 2011 11:37:18 -0800 |
| parents | da091bb67459 |
| children | 1fb790245268 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/javaAssertions.hpp" | |
| 27 #include "compiler/compilerOracle.hpp" | |
| 28 #include "memory/allocation.inline.hpp" | |
| 29 #include "memory/cardTableRS.hpp" | |
| 30 #include "memory/referenceProcessor.hpp" | |
| 31 #include "memory/universe.inline.hpp" | |
| 32 #include "oops/oop.inline.hpp" | |
| 33 #include "prims/jvmtiExport.hpp" | |
| 34 #include "runtime/arguments.hpp" | |
| 35 #include "runtime/globals_extension.hpp" | |
| 36 #include "runtime/java.hpp" | |
| 37 #include "services/management.hpp" | |
| 38 #include "utilities/defaultStream.hpp" | |
| 39 #include "utilities/taskqueue.hpp" | |
| 40 #ifdef TARGET_ARCH_x86 | |
| 41 # include "vm_version_x86.hpp" | |
| 42 #endif | |
| 43 #ifdef TARGET_ARCH_sparc | |
| 44 # include "vm_version_sparc.hpp" | |
| 45 #endif | |
| 46 #ifdef TARGET_ARCH_zero | |
| 47 # include "vm_version_zero.hpp" | |
| 48 #endif | |
| 49 #ifdef TARGET_OS_FAMILY_linux | |
| 50 # include "os_linux.inline.hpp" | |
| 51 #endif | |
| 52 #ifdef TARGET_OS_FAMILY_solaris | |
| 53 # include "os_solaris.inline.hpp" | |
| 54 #endif | |
| 55 #ifdef TARGET_OS_FAMILY_windows | |
| 56 # include "os_windows.inline.hpp" | |
| 57 #endif | |
| 58 #ifndef SERIALGC | |
| 59 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
| 60 #endif | |
| 0 | 61 |
| 62 #define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp" | |
| 63 #define DEFAULT_JAVA_LAUNCHER "generic" | |
| 64 | |
| 65 char** Arguments::_jvm_flags_array = NULL; | |
| 66 int Arguments::_num_jvm_flags = 0; | |
| 67 char** Arguments::_jvm_args_array = NULL; | |
| 68 int Arguments::_num_jvm_args = 0; | |
| 69 char* Arguments::_java_command = NULL; | |
| 70 SystemProperty* Arguments::_system_properties = NULL; | |
| 71 const char* Arguments::_gc_log_filename = NULL; | |
| 72 bool Arguments::_has_profile = false; | |
| 73 bool Arguments::_has_alloc_profile = false; | |
| 74 uintx Arguments::_min_heap_size = 0; | |
| 75 Arguments::Mode Arguments::_mode = _mixed; | |
| 76 bool Arguments::_java_compiler = false; | |
| 77 bool Arguments::_xdebug_mode = false; | |
| 78 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 79 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 80 int Arguments::_sun_java_launcher_pid = -1; | |
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81 bool Arguments::_created_by_gamma_launcher = false; |
| 0 | 82 |
| 83 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 84 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 85 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 86 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 87 bool Arguments::_ClipInlining = ClipInlining; | |
| 88 | |
| 89 char* Arguments::SharedArchivePath = NULL; | |
| 90 | |
| 91 AgentLibraryList Arguments::_libraryList; | |
| 92 AgentLibraryList Arguments::_agentList; | |
| 93 | |
| 94 abort_hook_t Arguments::_abort_hook = NULL; | |
| 95 exit_hook_t Arguments::_exit_hook = NULL; | |
| 96 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 97 | |
| 98 | |
| 99 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 100 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 101 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 102 SystemProperty *Arguments::_java_library_path = NULL; | |
| 103 SystemProperty *Arguments::_java_home = NULL; | |
| 104 SystemProperty *Arguments::_java_class_path = NULL; | |
| 105 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
| 106 | |
| 107 char* Arguments::_meta_index_path = NULL; | |
| 108 char* Arguments::_meta_index_dir = NULL; | |
| 109 | |
| 110 static bool force_client_mode = false; | |
| 111 | |
| 112 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 113 | |
| 114 static bool match_option(const JavaVMOption *option, const char* name, | |
| 115 const char** tail) { | |
| 116 int len = (int)strlen(name); | |
| 117 if (strncmp(option->optionString, name, len) == 0) { | |
| 118 *tail = option->optionString + len; | |
| 119 return true; | |
| 120 } else { | |
| 121 return false; | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 static void logOption(const char* opt) { | |
| 126 if (PrintVMOptions) { | |
| 127 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 // Process java launcher properties. | |
| 132 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 133 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 134 // Must do this before setting up other system properties, | |
| 135 // as some of them may depend on launcher type. | |
| 136 for (int index = 0; index < args->nOptions; index++) { | |
| 137 const JavaVMOption* option = args->options + index; | |
| 138 const char* tail; | |
| 139 | |
| 140 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 141 process_java_launcher_argument(tail, option->extraInfo); | |
| 142 continue; | |
| 143 } | |
| 144 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 145 _sun_java_launcher_pid = atoi(tail); | |
| 146 continue; | |
| 147 } | |
| 148 } | |
| 149 } | |
| 150 | |
| 151 // Initialize system properties key and value. | |
| 152 void Arguments::init_system_properties() { | |
| 153 | |
| 154 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 155 "Java Virtual Machine Specification", false)); | |
| 156 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 157 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 158 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 159 | |
| 160 // following are JVMTI agent writeable properties. | |
| 161 // Properties values are set to NULL and they are | |
| 162 // os specific they are initialized in os::init_system_properties_values(). | |
| 163 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 164 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 165 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 166 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 167 _java_home = new SystemProperty("java.home", NULL, true); | |
| 168 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
| 169 | |
| 170 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 171 | |
| 172 // Add to System Property list. | |
| 173 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 174 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 175 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 176 PropertyList_add(&_system_properties, _java_library_path); | |
| 177 PropertyList_add(&_system_properties, _java_home); | |
| 178 PropertyList_add(&_system_properties, _java_class_path); | |
| 179 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
| 180 | |
| 181 // Set OS specific system properties values | |
| 182 os::init_system_properties_values(); | |
| 183 } | |
| 184 | |
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185 |
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186 // Update/Initialize System properties after JDK version number is known |
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187 void Arguments::init_version_specific_system_properties() { |
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188 enum { bufsz = 16 }; |
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189 char buffer[bufsz]; |
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190 const char* spec_vendor = "Sun Microsystems Inc."; |
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191 uint32_t spec_version = 0; |
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192 |
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193 if (JDK_Version::is_gte_jdk17x_version()) { |
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194 spec_vendor = "Oracle Corporation"; |
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195 spec_version = JDK_Version::current().major_version(); |
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196 } |
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197 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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198 |
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199 PropertyList_add(&_system_properties, |
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200 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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201 PropertyList_add(&_system_properties, |
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202 new SystemProperty("java.vm.specification.version", buffer, false)); |
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203 PropertyList_add(&_system_properties, |
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204 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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205 } |
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206 |
| 242 | 207 /** |
| 208 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 209 * When a flag is eliminated, it can be added to this list in order to | |
| 210 * continue accepting this flag on the command-line, while issuing a warning | |
| 211 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 212 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 213 * a flag to die correctly over JDK releases using HSX. | |
| 214 */ | |
| 215 typedef struct { | |
| 216 const char* name; | |
| 217 JDK_Version obsoleted_in; // when the flag went away | |
| 218 JDK_Version accept_until; // which version to start denying the existence | |
| 219 } ObsoleteFlag; | |
| 0 | 220 |
| 242 | 221 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 222 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 223 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 224 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 225 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 226 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 227 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 228 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 229 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 230 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 231 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 232 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 233 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 234 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 235 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 1064 | 236 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
| 237 { "DefaultInitialRAMFraction", | |
| 238 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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239 { "UseDepthFirstScavengeOrder", |
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240 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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241 { "HandlePromotionFailure", |
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242 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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243 { "MaxLiveObjectEvacuationRatio", |
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244 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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245 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
| 242 | 246 { NULL, JDK_Version(0), JDK_Version(0) } |
| 247 }; | |
| 248 | |
| 249 // Returns true if the flag is obsolete and fits into the range specified | |
| 250 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 251 // value is filled in with the version number when the flag became | |
| 252 // obsolete so that that value can be displayed to the user. | |
| 253 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 254 int i = 0; |
| 242 | 255 assert(version != NULL, "Must provide a version buffer"); |
| 256 while (obsolete_jvm_flags[i].name != NULL) { | |
| 257 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 258 // <flag>=xxx form |
| 259 // [-|+]<flag> form | |
| 242 | 260 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 261 ((s[0] == '+' || s[0] == '-') && |
| 242 | 262 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 263 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 264 *version = flag_status.obsoleted_in; | |
| 265 return true; | |
| 266 } | |
| 0 | 267 } |
| 268 i++; | |
| 269 } | |
| 270 return false; | |
| 271 } | |
| 272 | |
| 273 // Constructs the system class path (aka boot class path) from the following | |
| 274 // components, in order: | |
| 275 // | |
| 276 // prefix // from -Xbootclasspath/p:... | |
| 277 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 278 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 279 // suffix // from -Xbootclasspath/a:... | |
| 280 // | |
| 281 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 282 // directories are added to the sysclasspath just before the base. | |
| 283 // | |
| 284 // This could be AllStatic, but it isn't needed after argument processing is | |
| 285 // complete. | |
| 286 class SysClassPath: public StackObj { | |
| 287 public: | |
| 288 SysClassPath(const char* base); | |
| 289 ~SysClassPath(); | |
| 290 | |
| 291 inline void set_base(const char* base); | |
| 292 inline void add_prefix(const char* prefix); | |
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293 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 294 inline void add_suffix(const char* suffix); |
| 295 inline void reset_path(const char* base); | |
| 296 | |
| 297 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 298 // property. Must be called after all command-line arguments have been | |
| 299 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 300 // combined_path(). | |
| 301 void expand_endorsed(); | |
| 302 | |
| 303 inline const char* get_base() const { return _items[_scp_base]; } | |
| 304 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 305 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 306 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 307 | |
| 308 // Combine all the components into a single c-heap-allocated string; caller | |
| 309 // must free the string if/when no longer needed. | |
| 310 char* combined_path(); | |
| 311 | |
| 312 private: | |
| 313 // Utility routines. | |
| 314 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 315 static char* add_jars_to_path(char* path, const char* directory); | |
| 316 | |
| 317 inline void reset_item_at(int index); | |
| 318 | |
| 319 // Array indices for the items that make up the sysclasspath. All except the | |
| 320 // base are allocated in the C heap and freed by this class. | |
| 321 enum { | |
| 322 _scp_prefix, // from -Xbootclasspath/p:... | |
| 323 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 324 _scp_base, // the default sysclasspath | |
| 325 _scp_suffix, // from -Xbootclasspath/a:... | |
| 326 _scp_nitems // the number of items, must be last. | |
| 327 }; | |
| 328 | |
| 329 const char* _items[_scp_nitems]; | |
| 330 DEBUG_ONLY(bool _expansion_done;) | |
| 331 }; | |
| 332 | |
| 333 SysClassPath::SysClassPath(const char* base) { | |
| 334 memset(_items, 0, sizeof(_items)); | |
| 335 _items[_scp_base] = base; | |
| 336 DEBUG_ONLY(_expansion_done = false;) | |
| 337 } | |
| 338 | |
| 339 SysClassPath::~SysClassPath() { | |
| 340 // Free everything except the base. | |
| 341 for (int i = 0; i < _scp_nitems; ++i) { | |
| 342 if (i != _scp_base) reset_item_at(i); | |
| 343 } | |
| 344 DEBUG_ONLY(_expansion_done = false;) | |
| 345 } | |
| 346 | |
| 347 inline void SysClassPath::set_base(const char* base) { | |
| 348 _items[_scp_base] = base; | |
| 349 } | |
| 350 | |
| 351 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 352 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 353 } | |
| 354 | |
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355 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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356 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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357 } |
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358 |
| 0 | 359 inline void SysClassPath::add_suffix(const char* suffix) { |
| 360 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 361 } | |
| 362 | |
| 363 inline void SysClassPath::reset_item_at(int index) { | |
| 364 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 365 if (_items[index] != NULL) { | |
| 366 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 367 _items[index] = NULL; | |
| 368 } | |
| 369 } | |
| 370 | |
| 371 inline void SysClassPath::reset_path(const char* base) { | |
| 372 // Clear the prefix and suffix. | |
| 373 reset_item_at(_scp_prefix); | |
| 374 reset_item_at(_scp_suffix); | |
| 375 set_base(base); | |
| 376 } | |
| 377 | |
| 378 //------------------------------------------------------------------------------ | |
| 379 | |
| 380 void SysClassPath::expand_endorsed() { | |
| 381 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 382 | |
| 383 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 384 if (path == NULL) { | |
| 385 path = Arguments::get_endorsed_dir(); | |
| 386 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 387 } | |
| 388 | |
| 389 char* expanded_path = NULL; | |
| 390 const char separator = *os::path_separator(); | |
| 391 const char* const end = path + strlen(path); | |
| 392 while (path < end) { | |
| 393 const char* tmp_end = strchr(path, separator); | |
| 394 if (tmp_end == NULL) { | |
| 395 expanded_path = add_jars_to_path(expanded_path, path); | |
| 396 path = end; | |
| 397 } else { | |
| 398 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 399 memcpy(dirpath, path, tmp_end - path); | |
| 400 dirpath[tmp_end - path] = '\0'; | |
| 401 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 402 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 403 path = tmp_end + 1; | |
| 404 } | |
| 405 } | |
| 406 _items[_scp_endorsed] = expanded_path; | |
| 407 DEBUG_ONLY(_expansion_done = true;) | |
| 408 } | |
| 409 | |
| 410 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 411 // c-heap-allocated string. | |
| 412 char* SysClassPath::combined_path() { | |
| 413 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 414 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 415 | |
| 416 size_t lengths[_scp_nitems]; | |
| 417 size_t total_len = 0; | |
| 418 | |
| 419 const char separator = *os::path_separator(); | |
| 420 | |
| 421 // Get the lengths. | |
| 422 int i; | |
| 423 for (i = 0; i < _scp_nitems; ++i) { | |
| 424 if (_items[i] != NULL) { | |
| 425 lengths[i] = strlen(_items[i]); | |
| 426 // Include space for the separator char (or a NULL for the last item). | |
| 427 total_len += lengths[i] + 1; | |
| 428 } | |
| 429 } | |
| 430 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 431 | |
| 432 // Copy the _items to a single string. | |
| 433 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 434 char* cp_tmp = cp; | |
| 435 for (i = 0; i < _scp_nitems; ++i) { | |
| 436 if (_items[i] != NULL) { | |
| 437 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 438 cp_tmp += lengths[i]; | |
| 439 *cp_tmp++ = separator; | |
| 440 } | |
| 441 } | |
| 442 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 443 return cp; | |
| 444 } | |
| 445 | |
| 446 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 447 char* | |
| 448 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 449 char *cp; | |
| 450 | |
| 451 assert(str != NULL, "just checking"); | |
| 452 if (path == NULL) { | |
| 453 size_t len = strlen(str) + 1; | |
| 454 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 455 memcpy(cp, str, len); // copy the trailing null | |
| 456 } else { | |
| 457 const char separator = *os::path_separator(); | |
| 458 size_t old_len = strlen(path); | |
| 459 size_t str_len = strlen(str); | |
| 460 size_t len = old_len + str_len + 2; | |
| 461 | |
| 462 if (prepend) { | |
| 463 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 464 char* cp_tmp = cp; | |
| 465 memcpy(cp_tmp, str, str_len); | |
| 466 cp_tmp += str_len; | |
| 467 *cp_tmp = separator; | |
| 468 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 469 FREE_C_HEAP_ARRAY(char, path); | |
| 470 } else { | |
| 471 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 472 char* cp_tmp = cp + old_len; | |
| 473 *cp_tmp = separator; | |
| 474 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 475 } | |
| 476 } | |
| 477 return cp; | |
| 478 } | |
| 479 | |
| 480 // Scan the directory and append any jar or zip files found to path. | |
| 481 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 482 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 483 DIR* dir = os::opendir(directory); | |
| 484 if (dir == NULL) return path; | |
| 485 | |
| 486 char dir_sep[2] = { '\0', '\0' }; | |
| 487 size_t directory_len = strlen(directory); | |
| 488 const char fileSep = *os::file_separator(); | |
| 489 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 490 | |
| 491 /* Scan the directory for jars/zips, appending them to path. */ | |
| 492 struct dirent *entry; | |
| 493 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 494 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 495 const char* name = entry->d_name; | |
| 496 const char* ext = name + strlen(name) - 4; | |
| 497 bool isJarOrZip = ext > name && | |
| 498 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 499 os::file_name_strcmp(ext, ".zip") == 0); | |
| 500 if (isJarOrZip) { | |
| 501 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 502 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 503 path = add_to_path(path, jarpath, false); | |
| 504 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 505 } | |
| 506 } | |
| 507 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 508 os::closedir(dir); | |
| 509 return path; | |
| 510 } | |
| 511 | |
| 512 // Parses a memory size specification string. | |
|
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513 static bool atomull(const char *s, julong* result) { |
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514 julong n = 0; |
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515 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 516 if (args_read != 1) { |
| 517 return false; | |
| 518 } | |
| 519 while (*s != '\0' && isdigit(*s)) { | |
| 520 s++; | |
| 521 } | |
| 522 // 4705540: illegal if more characters are found after the first non-digit | |
| 523 if (strlen(s) > 1) { | |
| 524 return false; | |
| 525 } | |
| 526 switch (*s) { | |
| 527 case 'T': case 't': | |
| 528 *result = n * G * K; | |
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529 // Check for overflow. |
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530 if (*result/((julong)G * K) != n) return false; |
| 0 | 531 return true; |
| 532 case 'G': case 'g': | |
| 533 *result = n * G; | |
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534 if (*result/G != n) return false; |
| 0 | 535 return true; |
| 536 case 'M': case 'm': | |
| 537 *result = n * M; | |
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538 if (*result/M != n) return false; |
| 0 | 539 return true; |
| 540 case 'K': case 'k': | |
| 541 *result = n * K; | |
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542 if (*result/K != n) return false; |
| 0 | 543 return true; |
| 544 case '\0': | |
| 545 *result = n; | |
| 546 return true; | |
| 547 default: | |
| 548 return false; | |
| 549 } | |
| 550 } | |
| 551 | |
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552 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 553 if (size < min_size) return arg_too_small; |
| 554 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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555 if (size > max_uintx) return arg_too_big; |
| 0 | 556 return arg_in_range; |
| 557 } | |
| 558 | |
| 559 // Describe an argument out of range error | |
| 560 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 561 switch(errcode) { | |
| 562 case arg_too_big: | |
| 563 jio_fprintf(defaultStream::error_stream(), | |
| 564 "The specified size exceeds the maximum " | |
| 565 "representable size.\n"); | |
| 566 break; | |
| 567 case arg_too_small: | |
| 568 case arg_unreadable: | |
| 569 case arg_in_range: | |
| 570 // do nothing for now | |
| 571 break; | |
| 572 default: | |
| 573 ShouldNotReachHere(); | |
| 574 } | |
| 575 } | |
| 576 | |
| 577 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 578 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 579 } | |
| 580 | |
| 581 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 582 double v; | |
| 583 if (sscanf(value, "%lf", &v) != 1) { | |
| 584 return false; | |
| 585 } | |
| 586 | |
| 587 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 588 return true; | |
| 589 } | |
| 590 return false; | |
| 591 } | |
| 592 | |
| 593 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
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594 julong v; |
| 0 | 595 intx intx_v; |
| 596 bool is_neg = false; | |
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597 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 598 if (*value == '-') { |
| 599 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 600 return false; | |
| 601 } | |
| 602 value++; | |
| 603 is_neg = true; | |
| 604 } | |
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605 if (!atomull(value, &v)) { |
| 0 | 606 return false; |
| 607 } | |
| 608 intx_v = (intx) v; | |
| 609 if (is_neg) { | |
| 610 intx_v = -intx_v; | |
| 611 } | |
| 612 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 613 return true; | |
| 614 } | |
| 615 uintx uintx_v = (uintx) v; | |
| 616 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 617 return true; | |
| 618 } | |
| 1064 | 619 uint64_t uint64_t_v = (uint64_t) v; |
| 620 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
| 621 return true; | |
| 622 } | |
| 0 | 623 return false; |
| 624 } | |
| 625 | |
| 626 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 627 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 628 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 629 FREE_C_HEAP_ARRAY(char, value); | |
| 630 return true; | |
| 631 } | |
| 632 | |
| 633 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 634 const char* old_value = ""; | |
| 635 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 636 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 637 size_t new_len = strlen(new_value); | |
| 638 const char* value; | |
| 639 char* free_this_too = NULL; | |
| 640 if (old_len == 0) { | |
| 641 value = new_value; | |
| 642 } else if (new_len == 0) { | |
| 643 value = old_value; | |
| 644 } else { | |
| 645 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 646 // each new setting adds another LINE to the switch: | |
| 647 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 648 value = buf; | |
| 649 free_this_too = buf; | |
| 650 } | |
| 651 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 652 // CommandLineFlags always returns a pointer that needs freeing. | |
| 653 FREE_C_HEAP_ARRAY(char, value); | |
| 654 if (free_this_too != NULL) { | |
| 655 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 656 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 657 } | |
| 658 return true; | |
| 659 } | |
| 660 | |
| 661 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 662 | |
| 663 // range of acceptable characters spelled out for portability reasons | |
| 664 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 665 #define BUFLEN 255 | |
| 666 char name[BUFLEN+1]; | |
| 667 char dummy; | |
| 668 | |
| 669 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 670 return set_bool_flag(name, false, origin); | |
| 671 } | |
| 672 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 673 return set_bool_flag(name, true, origin); | |
| 674 } | |
| 675 | |
| 676 char punct; | |
| 677 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 678 const char* value = strchr(arg, '=') + 1; | |
| 679 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 680 if (flag != NULL && flag->is_ccstr()) { | |
| 681 if (flag->ccstr_accumulates()) { | |
| 682 return append_to_string_flag(name, value, origin); | |
| 683 } else { | |
| 684 if (value[0] == '\0') { | |
| 685 value = NULL; | |
| 686 } | |
| 687 return set_string_flag(name, value, origin); | |
| 688 } | |
| 689 } | |
| 690 } | |
| 691 | |
| 692 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 693 const char* value = strchr(arg, '=') + 1; | |
| 694 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 695 if (value[0] == '\0') { | |
| 696 value = NULL; | |
| 697 } | |
| 698 return set_string_flag(name, value, origin); | |
| 699 } | |
| 700 | |
| 701 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 702 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 703 #define NUMBER_RANGE "[0123456789]" | |
| 704 char value[BUFLEN + 1]; | |
| 705 char value2[BUFLEN + 1]; | |
| 706 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 707 // Looks like a floating-point number -- try again with more lenient format string | |
| 708 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 709 return set_fp_numeric_flag(name, value, origin); | |
| 710 } | |
| 711 } | |
| 712 | |
| 713 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 714 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 715 return set_numeric_flag(name, value, origin); | |
| 716 } | |
| 717 | |
| 718 return false; | |
| 719 } | |
| 720 | |
| 721 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 722 assert(bldarray != NULL, "illegal argument"); | |
| 723 | |
| 724 if (arg == NULL) { | |
| 725 return; | |
| 726 } | |
| 727 | |
| 728 int index = *count; | |
| 729 | |
| 730 // expand the array and add arg to the last element | |
| 731 (*count)++; | |
| 732 if (*bldarray == NULL) { | |
| 733 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 734 } else { | |
| 735 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 736 } | |
| 737 (*bldarray)[index] = strdup(arg); | |
| 738 } | |
| 739 | |
| 740 void Arguments::build_jvm_args(const char* arg) { | |
| 741 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 742 } | |
| 743 | |
| 744 void Arguments::build_jvm_flags(const char* arg) { | |
| 745 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 746 } | |
| 747 | |
| 748 // utility function to return a string that concatenates all | |
| 749 // strings in a given char** array | |
| 750 const char* Arguments::build_resource_string(char** args, int count) { | |
| 751 if (args == NULL || count == 0) { | |
| 752 return NULL; | |
| 753 } | |
| 754 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 755 for (int i = 1; i < count; i++) { | |
| 756 length += strlen(args[i]) + 1; // add 1 for a space | |
| 757 } | |
| 758 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 759 strcpy(s, args[0]); | |
| 760 for (int j = 1; j < count; j++) { | |
| 761 strcat(s, " "); | |
| 762 strcat(s, args[j]); | |
| 763 } | |
| 764 return (const char*) s; | |
| 765 } | |
| 766 | |
| 767 void Arguments::print_on(outputStream* st) { | |
| 768 st->print_cr("VM Arguments:"); | |
| 769 if (num_jvm_flags() > 0) { | |
| 770 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 771 } | |
| 772 if (num_jvm_args() > 0) { | |
| 773 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 774 } | |
| 775 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 776 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 777 } | |
| 778 | |
| 779 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 780 if (_num_jvm_flags > 0) { | |
| 781 for (int i=0; i < _num_jvm_flags; i++) { | |
| 782 st->print("%s ", _jvm_flags_array[i]); | |
| 783 } | |
| 784 st->print_cr(""); | |
| 785 } | |
| 786 } | |
| 787 | |
| 788 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 789 if (_num_jvm_args > 0) { | |
| 790 for (int i=0; i < _num_jvm_args; i++) { | |
| 791 st->print("%s ", _jvm_args_array[i]); | |
| 792 } | |
| 793 st->print_cr(""); | |
| 794 } | |
| 795 } | |
| 796 | |
| 242 | 797 bool Arguments::process_argument(const char* arg, |
| 798 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 799 | |
| 800 JDK_Version since = JDK_Version(); | |
| 0 | 801 |
| 802 if (parse_argument(arg, origin)) { | |
| 803 // do nothing | |
| 242 | 804 } else if (is_newly_obsolete(arg, &since)) { |
| 805 enum { bufsize = 256 }; | |
| 806 char buffer[bufsize]; | |
| 807 since.to_string(buffer, bufsize); | |
| 0 | 808 jio_fprintf(defaultStream::error_stream(), |
| 242 | 809 "Warning: The flag %s has been EOL'd as of %s and will" |
| 810 " be ignored\n", arg, buffer); | |
| 0 | 811 } else { |
| 812 if (!ignore_unrecognized) { | |
| 813 jio_fprintf(defaultStream::error_stream(), | |
| 814 "Unrecognized VM option '%s'\n", arg); | |
| 815 // allow for commandline "commenting out" options like -XX:#+Verbose | |
| 816 if (strlen(arg) == 0 || arg[0] != '#') { | |
| 817 return false; | |
| 818 } | |
| 819 } | |
| 820 } | |
| 821 return true; | |
| 822 } | |
| 823 | |
| 824 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 825 FILE* stream = fopen(file_name, "rb"); | |
| 826 if (stream == NULL) { | |
| 827 if (should_exist) { | |
| 828 jio_fprintf(defaultStream::error_stream(), | |
| 829 "Could not open settings file %s\n", file_name); | |
| 830 return false; | |
| 831 } else { | |
| 832 return true; | |
| 833 } | |
| 834 } | |
| 835 | |
| 836 char token[1024]; | |
| 837 int pos = 0; | |
| 838 | |
| 839 bool in_white_space = true; | |
| 840 bool in_comment = false; | |
| 841 bool in_quote = false; | |
| 842 char quote_c = 0; | |
| 843 bool result = true; | |
| 844 | |
| 845 int c = getc(stream); | |
| 846 while(c != EOF) { | |
| 847 if (in_white_space) { | |
| 848 if (in_comment) { | |
| 849 if (c == '\n') in_comment = false; | |
| 850 } else { | |
| 851 if (c == '#') in_comment = true; | |
| 852 else if (!isspace(c)) { | |
| 853 in_white_space = false; | |
| 854 token[pos++] = c; | |
| 855 } | |
| 856 } | |
| 857 } else { | |
| 858 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 859 // token ends at newline, or at unquoted whitespace | |
| 860 // this allows a way to include spaces in string-valued options | |
| 861 token[pos] = '\0'; | |
| 862 logOption(token); | |
| 863 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 864 build_jvm_flags(token); | |
| 865 pos = 0; | |
| 866 in_white_space = true; | |
| 867 in_quote = false; | |
| 868 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 869 in_quote = true; | |
| 870 quote_c = c; | |
| 871 } else if (in_quote && (c == quote_c)) { | |
| 872 in_quote = false; | |
| 873 } else { | |
| 874 token[pos++] = c; | |
| 875 } | |
| 876 } | |
| 877 c = getc(stream); | |
| 878 } | |
| 879 if (pos > 0) { | |
| 880 token[pos] = '\0'; | |
| 881 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 882 build_jvm_flags(token); | |
| 883 } | |
| 884 fclose(stream); | |
| 885 return result; | |
| 886 } | |
| 887 | |
| 888 //============================================================================================================= | |
| 889 // Parsing of properties (-D) | |
| 890 | |
| 891 const char* Arguments::get_property(const char* key) { | |
| 892 return PropertyList_get_value(system_properties(), key); | |
| 893 } | |
| 894 | |
| 895 bool Arguments::add_property(const char* prop) { | |
| 896 const char* eq = strchr(prop, '='); | |
| 897 char* key; | |
| 898 // ns must be static--its address may be stored in a SystemProperty object. | |
| 899 const static char ns[1] = {0}; | |
| 900 char* value = (char *)ns; | |
| 901 | |
| 902 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 903 key = AllocateHeap(key_len + 1, "add_property"); | |
| 904 strncpy(key, prop, key_len); | |
| 905 key[key_len] = '\0'; | |
| 906 | |
| 907 if (eq != NULL) { | |
| 908 size_t value_len = strlen(prop) - key_len - 1; | |
| 909 value = AllocateHeap(value_len + 1, "add_property"); | |
| 910 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 911 } | |
| 912 | |
| 913 if (strcmp(key, "java.compiler") == 0) { | |
| 914 process_java_compiler_argument(value); | |
| 915 FreeHeap(key); | |
| 916 if (eq != NULL) { | |
| 917 FreeHeap(value); | |
| 918 } | |
| 919 return true; | |
| 691 | 920 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 921 _java_command = value; |
| 922 | |
|
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923 // Record value in Arguments, but let it get passed to Java. |
| 691 | 924 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 925 // launcher.pid property is private and is processed |
| 926 // in process_sun_java_launcher_properties(); | |
| 927 // the sun.java.launcher property is passed on to the java application | |
| 928 FreeHeap(key); | |
| 929 if (eq != NULL) { | |
| 930 FreeHeap(value); | |
| 931 } | |
| 932 return true; | |
| 691 | 933 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 934 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 935 // its value without going through the property list or making a Java call. | |
| 936 _java_vendor_url_bug = value; | |
| 691 | 937 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 938 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 939 return true; | |
| 0 | 940 } |
| 941 // Create new property and add at the end of the list | |
| 942 PropertyList_unique_add(&_system_properties, key, value); | |
| 943 return true; | |
| 944 } | |
| 945 | |
| 946 //=========================================================================================================== | |
| 947 // Setting int/mixed/comp mode flags | |
| 948 | |
| 949 void Arguments::set_mode_flags(Mode mode) { | |
| 950 // Set up default values for all flags. | |
| 951 // If you add a flag to any of the branches below, | |
| 952 // add a default value for it here. | |
| 953 set_java_compiler(false); | |
| 954 _mode = mode; | |
| 955 | |
| 956 // Ensure Agent_OnLoad has the correct initial values. | |
| 957 // This may not be the final mode; mode may change later in onload phase. | |
| 958 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
| 691 | 959 (char*)Abstract_VM_Version::vm_info_string(), false); |
| 0 | 960 |
| 961 UseInterpreter = true; | |
| 962 UseCompiler = true; | |
| 963 UseLoopCounter = true; | |
| 964 | |
| 965 // Default values may be platform/compiler dependent - | |
| 966 // use the saved values | |
| 967 ClipInlining = Arguments::_ClipInlining; | |
| 968 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 969 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 970 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 971 | |
| 972 // Change from defaults based on mode | |
| 973 switch (mode) { | |
| 974 default: | |
| 975 ShouldNotReachHere(); | |
| 976 break; | |
| 977 case _int: | |
| 978 UseCompiler = false; | |
| 979 UseLoopCounter = false; | |
| 980 AlwaysCompileLoopMethods = false; | |
| 981 UseOnStackReplacement = false; | |
| 982 break; | |
| 983 case _mixed: | |
| 984 // same as default | |
| 985 break; | |
| 986 case _comp: | |
| 987 UseInterpreter = false; | |
| 988 BackgroundCompilation = false; | |
| 989 ClipInlining = false; | |
| 990 break; | |
| 991 } | |
| 992 } | |
| 993 | |
| 994 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 995 // incompatible command line options were chosen. | |
| 996 | |
| 997 static void no_shared_spaces() { | |
| 998 if (RequireSharedSpaces) { | |
| 999 jio_fprintf(defaultStream::error_stream(), | |
| 1000 "Class data sharing is inconsistent with other specified options.\n"); | |
| 1001 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 1002 } else { | |
| 1003 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 1004 } | |
| 1005 } | |
| 1006 | |
| 1783 | 1007 void Arguments::set_tiered_flags() { |
| 1008 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { | |
| 1009 FLAG_SET_DEFAULT(CompilationPolicyChoice, 2); | |
| 1010 } | |
| 1011 if (CompilationPolicyChoice < 2) { | |
| 1012 vm_exit_during_initialization( | |
| 1013 "Incompatible compilation policy selected", NULL); | |
| 1014 } | |
|
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1015 // Increase the code cache size - tiered compiles a lot more. |
| 1783 | 1016 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
| 1017 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
| 1018 } | |
| 1019 } | |
| 1020 | |
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1021 #ifndef KERNEL |
| 0 | 1022 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
| 1023 // if it's not explictly set or unset. If the user has chosen | |
| 1024 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 1025 // set it, unless this is a single cpu machine. | |
| 1026 void Arguments::set_parnew_gc_flags() { | |
| 1064 | 1027 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
|
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1028 "control point invariant"); |
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1029 assert(UseParNewGC, "Error"); |
| 0 | 1030 |
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1031 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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1032 // complete. |
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1033 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
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1034 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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1035 } |
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1036 |
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1037 if (ParallelGCThreads == 0) { |
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1038 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1039 Abstract_VM_Version::parallel_worker_threads()); |
| 1064 | 1040 if (ParallelGCThreads == 1) { |
| 0 | 1041 FLAG_SET_DEFAULT(UseParNewGC, false); |
| 1064 | 1042 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
| 0 | 1043 } |
| 1044 } | |
| 1064 | 1045 if (UseParNewGC) { |
| 1046 // CDS doesn't work with ParNew yet | |
| 0 | 1047 no_shared_spaces(); |
| 1048 | |
| 695 | 1049 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
| 0 | 1050 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
| 1051 // we set them to 1024 and 1024. | |
| 1052 // See CR 6362902. | |
| 1053 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 1054 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 1055 } | |
| 1056 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1057 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 1058 } | |
| 1059 | |
| 1064 | 1060 // AlwaysTenure flag should make ParNew promote all at first collection. |
| 0 | 1061 // See CR 6362902. |
| 1062 if (AlwaysTenure) { | |
| 1063 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 1064 } | |
| 695 | 1065 // When using compressed oops, we use local overflow stacks, |
| 1066 // rather than using a global overflow list chained through | |
| 1067 // the klass word of the object's pre-image. | |
| 1068 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
| 1069 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
| 1070 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
| 1071 } | |
| 1072 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
| 1073 } | |
| 1074 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
| 0 | 1075 } |
| 1076 } | |
| 1077 | |
| 1078 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1079 // sparc/solaris for certain applications, but would gain from | |
| 1080 // further optimization and tuning efforts, and would almost | |
| 1081 // certainly gain from analysis of platform and environment. | |
| 1082 void Arguments::set_cms_and_parnew_gc_flags() { | |
| 1064 | 1083 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
|
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1084 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1085 |
| 0 | 1086 // If we are using CMS, we prefer to UseParNewGC, |
| 1087 // unless explicitly forbidden. | |
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1088 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1089 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1090 } |
| 1091 | |
| 1092 // Turn off AdaptiveSizePolicy by default for cms until it is | |
|
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1093 // complete. |
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1094 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
| 0 | 1095 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
| 1096 } | |
| 1097 | |
| 1098 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1099 // as needed. | |
|
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1100 if (UseParNewGC) { |
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1101 set_parnew_gc_flags(); |
| 0 | 1102 } |
| 1103 | |
| 1104 // Now make adjustments for CMS | |
| 1105 size_t young_gen_per_worker; | |
| 1106 intx new_ratio; | |
| 1107 size_t min_new_default; | |
| 1108 intx tenuring_default; | |
| 1109 if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0 | |
| 1110 if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) { | |
|
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1111 FLAG_SET_ERGO(intx, CMSYoungGenPerWorker, 4*M); |
| 0 | 1112 } |
| 1113 young_gen_per_worker = 4*M; | |
| 1114 new_ratio = (intx)15; | |
| 1115 min_new_default = 4*M; | |
| 1116 tenuring_default = (intx)0; | |
| 1117 } else { // new defaults: "new" as of 6.0 | |
| 1118 young_gen_per_worker = CMSYoungGenPerWorker; | |
| 1119 new_ratio = (intx)7; | |
| 1120 min_new_default = 16*M; | |
| 1121 tenuring_default = (intx)4; | |
| 1122 } | |
| 1123 | |
| 1124 // Preferred young gen size for "short" pauses | |
| 1125 const uintx parallel_gc_threads = | |
| 1126 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1127 const size_t preferred_max_new_size_unaligned = | |
| 1128 ScaleForWordSize(young_gen_per_worker * parallel_gc_threads); | |
| 1129 const size_t preferred_max_new_size = | |
| 1130 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); | |
| 1131 | |
| 1132 // Unless explicitly requested otherwise, size young gen | |
| 1133 // for "short" pauses ~ 4M*ParallelGCThreads | |
|
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1134 |
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1135 // If either MaxNewSize or NewRatio is set on the command line, |
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1136 // assume the user is trying to set the size of the young gen. |
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1137 |
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1138 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1139 |
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1140 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1141 // NewSize was set on the command line and it is larger than |
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1142 // preferred_max_new_size. |
| 0 | 1143 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1144 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1145 } else { |
|
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1146 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1147 } |
| 1064 | 1148 if (PrintGCDetails && Verbose) { |
|
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1149 // Too early to use gclog_or_tty |
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1150 tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
|
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1151 } |
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1152 |
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1153 // Unless explicitly requested otherwise, prefer a large |
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1154 // Old to Young gen size so as to shift the collection load |
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1155 // to the old generation concurrent collector |
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1156 |
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1157 // If this is only guarded by FLAG_IS_DEFAULT(NewRatio) |
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1158 // then NewSize and OldSize may be calculated. That would |
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1159 // generally lead to some differences with ParNewGC for which |
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1160 // there was no obvious reason. Also limit to the case where |
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1161 // MaxNewSize has not been set. |
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1162 |
|
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1163 FLAG_SET_ERGO(intx, NewRatio, MAX2(NewRatio, new_ratio)); |
| 0 | 1164 |
|
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1165 // Code along this path potentially sets NewSize and OldSize |
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1166 |
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1167 // Calculate the desired minimum size of the young gen but if |
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1168 // NewSize has been set on the command line, use it here since |
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1169 // it should be the final value. |
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1170 size_t min_new; |
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1171 if (FLAG_IS_DEFAULT(NewSize)) { |
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1172 min_new = align_size_up(ScaleForWordSize(min_new_default), |
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1173 os::vm_page_size()); |
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1174 } else { |
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1175 min_new = NewSize; |
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1176 } |
| 1064 | 1177 size_t prev_initial_size = InitialHeapSize; |
| 1178 if (prev_initial_size != 0 && prev_initial_size < min_new + OldSize) { | |
| 1179 FLAG_SET_ERGO(uintx, InitialHeapSize, min_new + OldSize); | |
| 0 | 1180 // Currently minimum size and the initial heap sizes are the same. |
| 1064 | 1181 set_min_heap_size(InitialHeapSize); |
| 0 | 1182 if (PrintGCDetails && Verbose) { |
| 1183 warning("Initial heap size increased to " SIZE_FORMAT " M from " | |
| 1184 SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", | |
| 1064 | 1185 InitialHeapSize/M, prev_initial_size/M); |
| 0 | 1186 } |
| 1187 } | |
|
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1188 |
| 0 | 1189 // MaxHeapSize is aligned down in collectorPolicy |
|
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1190 size_t max_heap = |
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1191 align_size_down(MaxHeapSize, |
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1192 CardTableRS::ct_max_alignment_constraint()); |
| 0 | 1193 |
| 1064 | 1194 if (PrintGCDetails && Verbose) { |
|
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1195 // Too early to use gclog_or_tty |
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1196 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1197 " initial_heap_size: " SIZE_FORMAT |
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1198 " max_heap: " SIZE_FORMAT, |
| 1064 | 1199 min_heap_size(), InitialHeapSize, max_heap); |
|
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1200 } |
| 0 | 1201 if (max_heap > min_new) { |
| 1202 // Unless explicitly requested otherwise, make young gen | |
| 1203 // at least min_new, and at most preferred_max_new_size. | |
| 1204 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
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1205 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1206 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
| 1064 | 1207 if (PrintGCDetails && Verbose) { |
|
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1208 // Too early to use gclog_or_tty |
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1209 tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); |
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1210 } |
| 0 | 1211 } |
| 1212 // Unless explicitly requested otherwise, size old gen | |
| 1213 // so that it's at least 3X of NewSize to begin with; | |
| 1214 // later NewRatio will decide how it grows; see above. | |
| 1215 if (FLAG_IS_DEFAULT(OldSize)) { | |
| 1216 if (max_heap > NewSize) { | |
| 1064 | 1217 FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); |
| 1218 if (PrintGCDetails && Verbose) { | |
|
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1219 // Too early to use gclog_or_tty |
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1220 tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); |
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1221 } |
| 0 | 1222 } |
| 1223 } | |
| 1224 } | |
| 1225 } | |
| 1226 // Unless explicitly requested otherwise, definitely | |
| 1227 // promote all objects surviving "tenuring_default" scavenges. | |
| 1228 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1229 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
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1230 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1231 } |
| 1232 // If we decided above (or user explicitly requested) | |
| 1233 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1234 // prefer minuscule survivor spaces so as not to waste | |
| 1235 // space for (non-existent) survivors | |
| 1236 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
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1237 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1238 } |
| 1239 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1240 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1241 // This is done in order to make ParNew+CMS configuration to work | |
| 1242 // with YoungPLABSize and OldPLABSize options. | |
| 1243 // See CR 6362902. | |
| 1244 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1245 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
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1246 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1247 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1248 // the value (either from the command line or ergonomics) of |
|
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1249 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1250 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
|
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1251 } else { |
| 0 | 1252 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
| 1253 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1254 // we'll let it to take precedence. | |
| 1255 jio_fprintf(defaultStream::error_stream(), | |
|
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1256 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1257 " options are specified for the CMS collector." |
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1258 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
| 0 | 1259 } |
| 1260 } | |
|
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1261 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
|
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1262 // OldPLAB sizing manually turned off: Use a larger default setting, |
|
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1263 // unless it was manually specified. This is because a too-low value |
|
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1264 // will slow down scavenges. |
|
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1265 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1266 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
|
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1267 } |
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1268 } |
|
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1269 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
|
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1270 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
|
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1271 // If either of the static initialization defaults have changed, note this |
|
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1272 // modification. |
|
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1273 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
|
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1274 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
|
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1275 } |
| 1284 | 1276 if (PrintGCDetails && Verbose) { |
| 1277 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1278 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1279 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1280 } | |
| 0 | 1281 } |
|
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1282 #endif // KERNEL |
| 0 | 1283 |
|
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1284 void set_object_alignment() { |
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1285 // Object alignment. |
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1286 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1287 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1288 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1289 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1290 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1291 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1292 |
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1293 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1294 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1295 |
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1296 // Oop encoding heap max |
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1297 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1298 |
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1299 #ifndef KERNEL |
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1300 // Set CMS global values |
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1301 CompactibleFreeListSpace::set_cms_values(); |
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1302 #endif // KERNEL |
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1303 } |
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1304 |
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1305 bool verify_object_alignment() { |
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1306 // Object alignment. |
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1307 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1308 jio_fprintf(defaultStream::error_stream(), |
|
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1309 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1310 (int)ObjectAlignmentInBytes); |
|
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1311 return false; |
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1312 } |
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1313 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1314 jio_fprintf(defaultStream::error_stream(), |
|
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1315 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1316 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1317 return false; |
|
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1318 } |
|
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1319 // It does not make sense to have big object alignment |
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1320 // since a space lost due to alignment will be greater |
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1321 // then a saved space from compressed oops. |
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1322 if ((int)ObjectAlignmentInBytes > 256) { |
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1323 jio_fprintf(defaultStream::error_stream(), |
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1324 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1325 (int)ObjectAlignmentInBytes); |
|
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1326 return false; |
|
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1327 } |
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1328 // In case page size is very small. |
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1329 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1330 jio_fprintf(defaultStream::error_stream(), |
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1331 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1332 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
|
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1333 return false; |
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1334 } |
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1335 return true; |
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1336 } |
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1337 |
|
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1338 inline uintx max_heap_for_compressed_oops() { |
| 1963 | 1339 // Avoid sign flip. |
| 1340 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | |
| 1341 return 0; | |
| 1342 } | |
| 1343 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | |
| 1064 | 1344 NOT_LP64(ShouldNotReachHere(); return 0); |
|
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1345 } |
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1346 |
| 0 | 1347 bool Arguments::should_auto_select_low_pause_collector() { |
| 1348 if (UseAutoGCSelectPolicy && | |
| 1349 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1350 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1351 if (PrintGCDetails) { | |
| 1352 // Cannot use gclog_or_tty yet. | |
| 1353 tty->print_cr("Automatic selection of the low pause collector" | |
| 1354 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1355 } | |
| 1356 return true; | |
| 1357 } | |
| 1358 return false; | |
| 1359 } | |
| 1360 | |
| 1361 void Arguments::set_ergonomics_flags() { | |
| 1362 // Parallel GC is not compatible with sharing. If one specifies | |
| 1064 | 1363 // that they want sharing explicitly, do not set ergonomics flags. |
|
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1364 if (DumpSharedSpaces || RequireSharedSpaces) { |
| 0 | 1365 return; |
| 1366 } | |
| 1367 | |
| 1368 if (os::is_server_class_machine() && !force_client_mode ) { | |
| 1369 // If no other collector is requested explicitly, | |
| 1370 // let the VM select the collector based on | |
| 1371 // machine class and automatic selection policy. | |
| 1372 if (!UseSerialGC && | |
| 1373 !UseConcMarkSweepGC && | |
|
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1374 !UseG1GC && |
| 0 | 1375 !UseParNewGC && |
| 1376 !DumpSharedSpaces && | |
| 1377 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1378 if (should_auto_select_low_pause_collector()) { | |
| 1379 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1380 } else { | |
| 1381 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1382 } | |
| 1383 no_shared_spaces(); | |
| 1384 } | |
| 1385 } | |
|
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1386 |
| 1010 | 1387 #ifndef ZERO |
|
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1388 #ifdef _LP64 |
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1389 // Check that UseCompressedOops can be set with the max heap size allocated |
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1390 // by ergonomics. |
| 187 | 1391 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 1783 | 1392 #if !defined(COMPILER1) || defined(TIERED) |
| 2228 | 1393 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 932 | 1394 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
|
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1395 } |
| 1060 | 1396 #endif |
|
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1397 #ifdef _WIN64 |
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1398 if (UseLargePages && UseCompressedOops) { |
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1399 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1400 // mode, when large pages are specified on windows. |
|
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1401 // This flag could be switched ON if narrow oop base address is set to 0, |
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1402 // see code in Universe::initialize_heap(). |
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1403 Universe::set_narrow_oop_use_implicit_null_checks(false); |
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1404 } |
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1405 #endif // _WIN64 |
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1406 } else { |
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1407 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1408 warning("Max heap size too large for Compressed Oops"); |
|
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1409 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1410 } |
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1411 } |
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1412 // Also checks that certain machines are slower with compressed oops |
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1413 // in vm_version initialization code. |
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1414 #endif // _LP64 |
| 1010 | 1415 #endif // !ZERO |
| 0 | 1416 } |
| 1417 | |
| 1418 void Arguments::set_parallel_gc_flags() { | |
|
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1419 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 0 | 1420 // If parallel old was requested, automatically enable parallel scavenge. |
| 1421 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1422 FLAG_SET_DEFAULT(UseParallelGC, true); | |
| 1423 } | |
| 1424 | |
| 1425 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1426 // of the physical memory, up to a maximum of 1GB. | |
| 1427 if (UseParallelGC) { | |
|
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1428 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
|
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1429 Abstract_VM_Version::parallel_worker_threads()); |
|
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1430 |
| 0 | 1431 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1432 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1433 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1434 // See CR 6362902 for details. | |
| 1435 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1436 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1437 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1438 } | |
| 1439 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1440 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1441 } | |
| 1442 } | |
| 1443 | |
| 1444 if (UseParallelOldGC) { | |
| 1445 // Par compact uses lower default values since they are treated as | |
|
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1446 // minimums. These are different defaults because of the different |
|
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1447 // interpretation and are not ergonomically set. |
| 0 | 1448 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
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1449 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1450 } |
| 1451 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
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1452 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1453 } |
| 1454 } | |
| 1455 } | |
| 1456 } | |
| 1457 | |
|
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1458 void Arguments::set_g1_gc_flags() { |
|
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1459 assert(UseG1GC, "Error"); |
|
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1460 #ifdef COMPILER1 |
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1461 FastTLABRefill = false; |
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1462 #endif |
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1463 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1464 Abstract_VM_Version::parallel_worker_threads()); |
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1465 if (ParallelGCThreads == 0) { |
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1466 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1467 Abstract_VM_Version::parallel_worker_threads()); |
|
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1468 } |
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1469 no_shared_spaces(); |
| 751 | 1470 |
| 1284 | 1471 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
|
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1472 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
| 1284 | 1473 } |
| 1474 if (PrintGCDetails && Verbose) { | |
| 1475 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1476 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1477 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1478 } | |
| 1356 | 1479 |
| 1480 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
| 1481 // In G1, we want the default GC overhead goal to be higher than | |
| 1482 // say in PS. So we set it here to 10%. Otherwise the heap might | |
| 1483 // be expanded more aggressively than we would like it to. In | |
| 1484 // fact, even 10% seems to not be high enough in some cases | |
| 1485 // (especially small GC stress tests that the main thing they do | |
| 1486 // is allocation). We might consider increase it further. | |
| 1487 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
| 1488 } | |
|
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1489 } |
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1490 |
| 1064 | 1491 void Arguments::set_heap_size() { |
| 1492 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
| 1493 // Deprecated flag | |
| 1494 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
| 1495 } | |
| 1496 | |
| 1497 const julong phys_mem = | |
| 1498 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
| 1499 : (julong)MaxRAM; | |
| 1500 | |
| 1501 // If the maximum heap size has not been set with -Xmx, | |
| 1502 // then set it as fraction of the size of physical memory, | |
| 1503 // respecting the maximum and minimum sizes of the heap. | |
|
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1504 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
| 1064 | 1505 julong reasonable_max = phys_mem / MaxRAMFraction; |
| 1506 | |
| 1507 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
| 1508 // Small physical memory, so use a minimum fraction of it for the heap | |
| 1509 reasonable_max = phys_mem / MinRAMFraction; | |
| 1510 } else { | |
| 1511 // Not-small physical memory, so require a heap at least | |
| 1512 // as large as MaxHeapSize | |
| 1513 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
| 1514 } | |
| 1515 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
| 1516 // Limit the heap size to ErgoHeapSizeLimit | |
| 1517 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
|
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1518 } |
| 1064 | 1519 if (UseCompressedOops) { |
| 1520 // Limit the heap size to the maximum possible when using compressed oops | |
| 1963 | 1521 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
| 1522 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
| 1523 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
| 1524 // but it should be not less than default MaxHeapSize. | |
| 1525 max_coop_heap -= HeapBaseMinAddress; | |
| 1526 } | |
| 1527 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
| 1064 | 1528 } |
| 1529 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
| 1530 | |
| 1531 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
| 1532 // An initial heap size was specified on the command line, | |
| 1533 // so be sure that the maximum size is consistent. Done | |
| 1534 // after call to allocatable_physical_memory because that | |
| 1535 // method might reduce the allocation size. | |
| 1536 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
| 1537 } | |
| 1538 | |
|
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1539 if (PrintGCDetails && Verbose) { |
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1540 // Cannot use gclog_or_tty yet. |
| 1064 | 1541 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
|
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1542 } |
| 1064 | 1543 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
| 1544 } | |
| 1545 | |
| 1546 // If the initial_heap_size has not been set with InitialHeapSize | |
| 1547 // or -Xms, then set it as fraction of the size of physical memory, | |
| 1548 // respecting the maximum and minimum sizes of the heap. | |
| 1549 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
|
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1550 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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changeset
|
1551 |
|
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1552 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
|
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1553 |
|
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1554 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
|
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1555 |
| 1064 | 1556 julong reasonable_initial = phys_mem / InitialRAMFraction; |
| 1557 | |
|
1074
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1558 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
| 1064 | 1559 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
| 1560 | |
| 1561 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
| 1562 | |
| 1563 if (PrintGCDetails && Verbose) { | |
| 1564 // Cannot use gclog_or_tty yet. | |
| 1565 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
|
1074
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1566 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1567 } |
| 1064 | 1568 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
|
1074
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1569 set_min_heap_size((uintx)reasonable_minimum); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1570 } |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1571 } |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1572 |
| 0 | 1573 // This must be called after ergonomics because we want bytecode rewriting |
| 1574 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1575 void Arguments::set_bytecode_flags() { | |
| 1576 // Better not attempt to store into a read-only space. | |
| 1577 if (UseSharedSpaces) { | |
| 1578 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1579 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1580 } | |
| 1581 | |
| 1582 if (!RewriteBytecodes) { | |
| 1583 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1584 } | |
| 1585 } | |
| 1586 | |
| 1587 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1588 void Arguments::set_aggressive_opts_flags() { | |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1589 #ifdef COMPILER2 |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1590 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1591 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1592 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1593 } |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1594 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1595 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1596 } |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1597 |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1598 // Feed the cache size setting into the JDK |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1599 char buffer[1024]; |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1600 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1601 add_property(buffer); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1602 } |
| 65 | 1603 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
| 1604 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
| 1605 } | |
|
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1606 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1607 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1608 } |
| 1622 | 1609 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeStringConcat)) { |
| 1610 FLAG_SET_DEFAULT(OptimizeStringConcat, true); | |
| 1611 } | |
| 1763 | 1612 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeFill)) { |
| 1613 FLAG_SET_DEFAULT(OptimizeFill, true); | |
| 1614 } | |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1615 #endif |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1616 |
| 0 | 1617 if (AggressiveOpts) { |
| 61 | 1618 // Sample flag setting code |
| 1619 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1620 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1621 // } | |
| 0 | 1622 } |
| 1623 } | |
| 1624 | |
| 1625 //=========================================================================================================== | |
| 1626 // Parsing of java.compiler property | |
| 1627 | |
| 1628 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1629 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1630 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1631 // is also specified. | |
| 1632 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1633 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1634 } | |
| 1635 } | |
| 1636 | |
| 1637 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1638 _sun_java_launcher = strdup(launcher); | |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1639 if (strcmp("gamma", _sun_java_launcher) == 0) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1640 _created_by_gamma_launcher = true; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1641 } |
| 0 | 1642 } |
| 1643 | |
| 1644 bool Arguments::created_by_java_launcher() { | |
| 1645 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1646 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1647 } | |
| 1648 | |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1649 bool Arguments::created_by_gamma_launcher() { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1650 return _created_by_gamma_launcher; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1651 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1652 |
| 0 | 1653 //=========================================================================================================== |
| 1654 // Parsing of main arguments | |
| 1655 | |
|
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1656 bool Arguments::verify_interval(uintx val, uintx min, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1657 uintx max, const char* name) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1658 // Returns true iff value is in the inclusive interval [min..max] |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1659 // false, otherwise. |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1660 if (val >= min && val <= max) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1661 return true; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1662 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1663 jio_fprintf(defaultStream::error_stream(), |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1664 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1665 " and " UINTX_FORMAT "\n", |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1666 name, val, min, max); |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1667 return false; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1668 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1669 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1670 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
ptisnovs
parents:
1681
diff
changeset
|
1671 // Returns true if given value is greater than specified min threshold |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1672 // false, otherwise. |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1673 if (val >= min ) { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1674 return true; |
|
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 jio_fprintf(defaultStream::error_stream(), |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1677 "%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
ptisnovs
parents:
1681
diff
changeset
|
1678 name, val, min); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1679 return false; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1680 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1681 |
| 0 | 1682 bool Arguments::verify_percentage(uintx value, const char* name) { |
| 1683 if (value <= 100) { | |
| 1684 return true; | |
| 1685 } | |
| 1686 jio_fprintf(defaultStream::error_stream(), | |
| 1687 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1688 name, value); | |
| 1689 return false; | |
| 1690 } | |
| 1691 | |
| 1064 | 1692 static void force_serial_gc() { |
| 0 | 1693 FLAG_SET_DEFAULT(UseSerialGC, true); |
| 1694 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1695 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1696 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
| 0 | 1697 FLAG_SET_DEFAULT(UseParallelGC, false); |
| 1698 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1699 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1700 } |
| 1701 | |
| 1702 static bool verify_serial_gc_flags() { | |
| 1703 return (UseSerialGC && | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1704 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1705 UseParallelGC || UseParallelOldGC)); |
| 0 | 1706 } |
| 1707 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1708 // Check consistency of GC selection |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1709 bool Arguments::check_gc_consistency() { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1710 bool status = true; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1711 // Ensure that the user has not selected conflicting sets |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1712 // of collectors. [Note: this check is merely a user convenience; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1713 // collectors over-ride each other so that only a non-conflicting |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1714 // set is selected; however what the user gets is not what they |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1715 // may have expected from the combination they asked for. It's |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1716 // 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
|
1717 // select conflicting combinations. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1718 uint i = 0; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1719 if (UseSerialGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1720 if (UseConcMarkSweepGC || UseParNewGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1721 if (UseParallelGC || UseParallelOldGC) i++; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1722 if (UseG1GC) i++; |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1723 if (i > 1) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1724 jio_fprintf(defaultStream::error_stream(), |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1725 "Conflicting collector combinations in option list; " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1726 "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
|
1727 "allowed\n"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1728 status = false; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1729 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1730 |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1731 return status; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1732 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1733 |
|
1744
f8c5d1bdaad4
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1734 // Check stack pages settings |
|
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1735 bool Arguments::check_stack_pages() |
|
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1736 { |
|
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1737 bool status = true; |
|
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1738 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
|
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|
1739 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
|
1867
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1740 // greater stack shadow pages can't generate instruction to bang stack |
|
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1741 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
|
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1742 return status; |
|
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1743 } |
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1744 |
| 0 | 1745 // Check the consistency of vm_init_args |
| 1746 bool Arguments::check_vm_args_consistency() { | |
| 1747 // Method for adding checks for flag consistency. | |
| 1748 // The intent is to warn the user of all possible conflicts, | |
| 1749 // before returning an error. | |
| 1750 // Note: Needs platform-dependent factoring. | |
| 1751 bool status = true; | |
| 1752 | |
| 1753 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1754 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1755 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1756 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1757 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1758 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1759 extern void VM_Version_init(); | |
| 1760 VM_Version_init(); | |
| 1761 if (!VM_Version::has_v9()) { | |
| 1762 jio_fprintf(defaultStream::error_stream(), | |
| 1763 "V8 Machine detected, Server requires V9\n"); | |
| 1764 status = false; | |
| 1765 } | |
| 1766 #endif /* COMPILER2 && SPARC */ | |
| 1767 | |
| 1768 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1769 // builds so the cost of stack banging can be measured. | |
| 1770 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1771 if (!UseBoundThreads && !UseStackBanging) { | |
| 1772 jio_fprintf(defaultStream::error_stream(), | |
| 1773 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1774 | |
| 1775 status = false; | |
| 1776 } | |
| 1777 #endif | |
| 1778 | |
| 1779 if (TLABRefillWasteFraction == 0) { | |
| 1780 jio_fprintf(defaultStream::error_stream(), | |
| 1781 "TLABRefillWasteFraction should be a denominator, " | |
| 1782 "not " SIZE_FORMAT "\n", | |
| 1783 TLABRefillWasteFraction); | |
| 1784 status = false; | |
| 1785 } | |
| 1786 | |
|
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1787 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1788 "AdaptiveSizePolicyWeight"); |
|
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1789 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
|
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1790 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
|
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1791 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
|
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1792 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1793 |
| 1794 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1795 jio_fprintf(defaultStream::error_stream(), | |
| 1796 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1797 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1798 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1799 status = false; | |
| 1800 } | |
| 1801 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1802 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1803 | |
| 1804 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1805 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1806 } | |
| 1807 | |
|
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1808 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
|
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1809 // Settings to encourage splitting. |
|
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1810 if (!FLAG_IS_CMDLINE(NewRatio)) { |
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1811 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
|
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1812 } |
|
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1813 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
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1814 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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1815 } |
|
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1816 } |
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1817 |
|
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1818 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1819 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1820 if (GCTimeLimit == 100) { |
| 1821 // Turn off gc-overhead-limit-exceeded checks | |
| 1822 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1823 } | |
| 1824 | |
|
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1825 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1826 |
|
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1827 status = status && check_gc_consistency(); |
|
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1828 status = status && check_stack_pages(); |
| 0 | 1829 |
| 1830 if (_has_alloc_profile) { | |
| 1831 if (UseParallelGC || UseParallelOldGC) { | |
| 1832 jio_fprintf(defaultStream::error_stream(), | |
| 1833 "error: invalid argument combination.\n" | |
| 1834 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1835 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1836 status = false; | |
| 1837 } | |
| 1838 if (UseConcMarkSweepGC) { | |
| 1839 jio_fprintf(defaultStream::error_stream(), | |
| 1840 "error: invalid argument combination.\n" | |
| 1841 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1842 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1843 status = false; | |
| 1844 } | |
| 1845 } | |
| 1846 | |
| 1847 if (CMSIncrementalMode) { | |
| 1848 if (!UseConcMarkSweepGC) { | |
| 1849 jio_fprintf(defaultStream::error_stream(), | |
| 1850 "error: invalid argument combination.\n" | |
| 1851 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1852 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1853 status = false; | |
| 1854 } else { | |
|
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1855 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1856 "CMSIncrementalDutyCycle"); |
|
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1857 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1858 "CMSIncrementalDutyCycleMin"); |
|
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1859 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1860 "CMSIncrementalSafetyFactor"); |
|
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1861 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1862 "CMSIncrementalOffset"); |
|
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1863 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1864 "CMSExpAvgFactor"); |
| 1865 // If it was not set on the command line, set | |
| 1866 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1867 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1868 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1869 } | |
| 1870 } | |
| 1871 } | |
| 1872 | |
| 1873 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1874 // insists that we hold the requisite locks so that the iteration is | |
| 1875 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1876 // yet have a good way of acquiring and releasing these locks, | |
| 1877 // which are not visible at the CollectedHeap level. We want to | |
| 1878 // be able to acquire these locks and then do the iteration rather | |
| 1879 // than just disable the lock verification. This will be fixed under | |
| 1880 // bug 4788986. | |
| 1881 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1882 if (VerifyGCStartAt == 0) { | |
| 1883 warning("Heap verification at start-up disabled " | |
| 1884 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1885 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1886 } | |
| 1887 if (VerifyBeforeExit) { | |
| 1888 warning("Heap verification at shutdown disabled " | |
| 1889 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1890 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1891 } | |
| 1892 } | |
| 1893 | |
| 1894 // Note: only executed in non-PRODUCT mode | |
| 1895 if (!UseAsyncConcMarkSweepGC && | |
| 1896 (ExplicitGCInvokesConcurrent || | |
| 1897 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1898 jio_fprintf(defaultStream::error_stream(), | |
| 1899 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1900 " with -UseAsyncConcMarkSweepGC"); | |
| 1901 status = false; | |
| 1902 } | |
| 1903 | |
|
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1904 #ifndef SERIALGC |
|
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1905 if (UseG1GC) { |
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1906 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
|
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1907 "InitiatingHeapOccupancyPercent"); |
|
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1908 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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1909 "G1RefProcDrainInterval"); |
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1910 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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1911 "G1ConcMarkStepDurationMillis"); |
|
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1912 } |
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1913 #endif |
|
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1914 |
|
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1915 status = status && verify_interval(RefDiscoveryPolicy, |
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1916 ReferenceProcessor::DiscoveryPolicyMin, |
|
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1917 ReferenceProcessor::DiscoveryPolicyMax, |
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1918 "RefDiscoveryPolicy"); |
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1919 |
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1920 // Limit the lower bound of this flag to 1 as it is used in a division |
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1921 // expression. |
|
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1922 status = status && verify_interval(TLABWasteTargetPercent, |
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1923 1, 100, "TLABWasteTargetPercent"); |
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1924 |
|
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1925 status = status && verify_object_alignment(); |
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1926 |
| 0 | 1927 return status; |
| 1928 } | |
| 1929 | |
| 1930 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1931 const char* option_type) { | |
| 1932 if (ignore) return false; | |
| 1933 | |
| 1934 const char* spacer = " "; | |
| 1935 if (option_type == NULL) { | |
| 1936 option_type = ++spacer; // Set both to the empty string. | |
| 1937 } | |
| 1938 | |
| 1939 if (os::obsolete_option(option)) { | |
| 1940 jio_fprintf(defaultStream::error_stream(), | |
| 1941 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1942 option->optionString); | |
| 1943 return false; | |
| 1944 } else { | |
| 1945 jio_fprintf(defaultStream::error_stream(), | |
| 1946 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 1947 option->optionString); | |
| 1948 return true; | |
| 1949 } | |
| 1950 } | |
| 1951 | |
| 1952 static const char* user_assertion_options[] = { | |
| 1953 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 1954 }; | |
| 1955 | |
| 1956 static const char* system_assertion_options[] = { | |
| 1957 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 1958 }; | |
| 1959 | |
| 1960 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 1961 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 1962 // the option must match exactly. | |
| 1963 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 1964 bool tail_allowed) { | |
| 1965 for (/* empty */; *names != NULL; ++names) { | |
| 1966 if (match_option(option, *names, tail)) { | |
| 1967 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 1968 return true; | |
| 1969 } | |
| 1970 } | |
| 1971 } | |
| 1972 return false; | |
| 1973 } | |
| 1974 | |
| 1284 | 1975 bool Arguments::parse_uintx(const char* value, |
| 1976 uintx* uintx_arg, | |
| 1977 uintx min_size) { | |
| 1978 | |
| 1979 // Check the sign first since atomull() parses only unsigned values. | |
| 1980 bool value_is_positive = !(*value == '-'); | |
| 1981 | |
| 1982 if (value_is_positive) { | |
| 1983 julong n; | |
| 1984 bool good_return = atomull(value, &n); | |
| 1985 if (good_return) { | |
| 1986 bool above_minimum = n >= min_size; | |
| 1987 bool value_is_too_large = n > max_uintx; | |
| 1988 | |
| 1989 if (above_minimum && !value_is_too_large) { | |
| 1990 *uintx_arg = n; | |
| 1991 return true; | |
| 1992 } | |
| 1993 } | |
| 1994 } | |
| 1995 return false; | |
| 1996 } | |
| 1997 | |
| 0 | 1998 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
|
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1999 julong* long_arg, |
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2000 julong min_size) { |
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2001 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 2002 return check_memory_size(*long_arg, min_size); |
| 2003 } | |
| 2004 | |
| 2005 // Parse JavaVMInitArgs structure | |
| 2006 | |
| 2007 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 2008 // For components of the system classpath. | |
| 2009 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 2010 bool scp_assembly_required = false; | |
| 2011 | |
| 2012 // Save default settings for some mode flags | |
| 2013 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 2014 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 2015 Arguments::_ClipInlining = ClipInlining; | |
| 2016 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 2017 | |
| 2018 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
| 2019 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 2020 if (result != JNI_OK) { | |
| 2021 return result; | |
| 2022 } | |
| 2023 | |
| 2024 // Parse JavaVMInitArgs structure passed in | |
| 2025 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 2026 if (result != JNI_OK) { | |
| 2027 return result; | |
| 2028 } | |
| 2029 | |
|
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2030 if (AggressiveOpts) { |
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2031 // Insert alt-rt.jar between user-specified bootclasspath |
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2032 // prefix and the default bootclasspath. os::set_boot_path() |
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2033 // uses meta_index_dir as the default bootclasspath directory. |
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2034 const char* altclasses_jar = "alt-rt.jar"; |
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2035 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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2036 strlen(altclasses_jar); |
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2037 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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2038 strcpy(altclasses_path, get_meta_index_dir()); |
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2039 strcat(altclasses_path, altclasses_jar); |
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2040 scp.add_suffix_to_prefix(altclasses_path); |
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2041 scp_assembly_required = true; |
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2042 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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2043 } |
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2044 |
| 0 | 2045 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 2046 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 2047 if (result != JNI_OK) { | |
| 2048 return result; | |
| 2049 } | |
| 2050 | |
| 2051 // Do final processing now that all arguments have been parsed | |
| 2052 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 2053 if (result != JNI_OK) { | |
| 2054 return result; | |
| 2055 } | |
| 2056 | |
| 2057 return JNI_OK; | |
| 2058 } | |
| 2059 | |
| 2060 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 2061 SysClassPath* scp_p, | |
| 2062 bool* scp_assembly_required_p, | |
| 2063 FlagValueOrigin origin) { | |
| 2064 // Remaining part of option string | |
| 2065 const char* tail; | |
| 2066 | |
| 2067 // iterate over arguments | |
| 2068 for (int index = 0; index < args->nOptions; index++) { | |
| 2069 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 2070 | |
| 2071 const JavaVMOption* option = args->options + index; | |
| 2072 | |
| 2073 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 2074 !match_option(option, "-Dsun.java.command", &tail) && | |
| 2075 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 2076 | |
| 2077 // add all jvm options to the jvm_args string. This string | |
| 2078 // is used later to set the java.vm.args PerfData string constant. | |
| 2079 // the -Djava.class.path and the -Dsun.java.command options are | |
| 2080 // omitted from jvm_args string as each have their own PerfData | |
| 2081 // string constant object. | |
| 2082 build_jvm_args(option->optionString); | |
| 2083 } | |
| 2084 | |
| 2085 // -verbose:[class/gc/jni] | |
| 2086 if (match_option(option, "-verbose", &tail)) { | |
| 2087 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 2088 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 2089 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2090 } else if (!strcmp(tail, ":gc")) { | |
| 2091 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2092 } else if (!strcmp(tail, ":jni")) { | |
| 2093 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 2094 } | |
| 2095 // -da / -ea / -disableassertions / -enableassertions | |
| 2096 // These accept an optional class/package name separated by a colon, e.g., | |
| 2097 // -da:java.lang.Thread. | |
| 2098 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 2099 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2100 if (*tail == '\0') { | |
| 2101 JavaAssertions::setUserClassDefault(enable); | |
| 2102 } else { | |
| 2103 assert(*tail == ':', "bogus match by match_option()"); | |
| 2104 JavaAssertions::addOption(tail + 1, enable); | |
| 2105 } | |
| 2106 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 2107 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 2108 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2109 JavaAssertions::setSystemClassDefault(enable); | |
| 2110 // -bootclasspath: | |
| 2111 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 2112 scp_p->reset_path(tail); | |
| 2113 *scp_assembly_required_p = true; | |
| 2114 // -bootclasspath/a: | |
| 2115 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 2116 scp_p->add_suffix(tail); | |
| 2117 *scp_assembly_required_p = true; | |
| 2118 // -bootclasspath/p: | |
| 2119 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 2120 scp_p->add_prefix(tail); | |
| 2121 *scp_assembly_required_p = true; | |
| 2122 // -Xrun | |
| 2123 } else if (match_option(option, "-Xrun", &tail)) { | |
|
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2124 if (tail != NULL) { |
| 0 | 2125 const char* pos = strchr(tail, ':'); |
| 2126 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2127 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2128 name[len] = '\0'; | |
| 2129 | |
| 2130 char *options = NULL; | |
| 2131 if(pos != NULL) { | |
| 2132 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 2133 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 2134 } | |
| 2135 #ifdef JVMTI_KERNEL | |
| 2136 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2137 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2138 } else | |
| 2139 #endif // JVMTI_KERNEL | |
| 2140 add_init_library(name, options); | |
| 2141 } | |
| 2142 // -agentlib and -agentpath | |
| 2143 } else if (match_option(option, "-agentlib:", &tail) || | |
| 2144 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 2145 if(tail != NULL) { | |
| 2146 const char* pos = strchr(tail, '='); | |
| 2147 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2148 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2149 name[len] = '\0'; | |
| 2150 | |
| 2151 char *options = NULL; | |
| 2152 if(pos != NULL) { | |
| 2153 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 2154 } | |
| 2155 #ifdef JVMTI_KERNEL | |
| 2156 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2157 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2158 } else | |
| 2159 #endif // JVMTI_KERNEL | |
| 2160 add_init_agent(name, options, is_absolute_path); | |
| 2161 | |
| 2162 } | |
| 2163 // -javaagent | |
| 2164 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 2165 if(tail != NULL) { | |
| 2166 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 2167 add_init_agent("instrument", options, false); | |
| 2168 } | |
| 2169 // -Xnoclassgc | |
| 2170 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 2171 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 2172 // -Xincgc: i-CMS | |
| 2173 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 2174 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2175 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 2176 // -Xnoincgc: no i-CMS | |
| 2177 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 2178 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2179 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 2180 // -Xconcgc | |
| 2181 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 2182 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2183 // -Xnoconcgc | |
| 2184 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 2185 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2186 // -Xbatch | |
| 2187 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 2188 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2189 // -Xmn for compatibility with other JVM vendors | |
| 2190 } else if (match_option(option, "-Xmn", &tail)) { | |
|
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2191 julong long_initial_eden_size = 0; |
| 0 | 2192 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 2193 if (errcode != arg_in_range) { | |
| 2194 jio_fprintf(defaultStream::error_stream(), | |
| 2195 "Invalid initial eden size: %s\n", option->optionString); | |
| 2196 describe_range_error(errcode); | |
| 2197 return JNI_EINVAL; | |
| 2198 } | |
| 1064 | 2199 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
| 2200 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
| 0 | 2201 // -Xms |
| 2202 } else if (match_option(option, "-Xms", &tail)) { | |
|
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2203 julong long_initial_heap_size = 0; |
| 0 | 2204 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 2205 if (errcode != arg_in_range) { | |
| 2206 jio_fprintf(defaultStream::error_stream(), | |
| 2207 "Invalid initial heap size: %s\n", option->optionString); | |
| 2208 describe_range_error(errcode); | |
| 2209 return JNI_EINVAL; | |
| 2210 } | |
| 1064 | 2211 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
| 0 | 2212 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2213 set_min_heap_size(InitialHeapSize); |
| 0 | 2214 // -Xmx |
| 2215 } else if (match_option(option, "-Xmx", &tail)) { | |
|
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2216 julong long_max_heap_size = 0; |
| 0 | 2217 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 2218 if (errcode != arg_in_range) { | |
| 2219 jio_fprintf(defaultStream::error_stream(), | |
| 2220 "Invalid maximum heap size: %s\n", option->optionString); | |
| 2221 describe_range_error(errcode); | |
| 2222 return JNI_EINVAL; | |
| 2223 } | |
| 1064 | 2224 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
| 0 | 2225 // Xmaxf |
| 2226 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 2227 int maxf = (int)(atof(tail) * 100); | |
| 2228 if (maxf < 0 || maxf > 100) { | |
| 2229 jio_fprintf(defaultStream::error_stream(), | |
| 2230 "Bad max heap free percentage size: %s\n", | |
| 2231 option->optionString); | |
| 2232 return JNI_EINVAL; | |
| 2233 } else { | |
| 2234 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 2235 } | |
| 2236 // Xminf | |
| 2237 } else if (match_option(option, "-Xminf", &tail)) { | |
| 2238 int minf = (int)(atof(tail) * 100); | |
| 2239 if (minf < 0 || minf > 100) { | |
| 2240 jio_fprintf(defaultStream::error_stream(), | |
| 2241 "Bad min heap free percentage size: %s\n", | |
| 2242 option->optionString); | |
| 2243 return JNI_EINVAL; | |
| 2244 } else { | |
| 2245 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 2246 } | |
| 2247 // -Xss | |
| 2248 } else if (match_option(option, "-Xss", &tail)) { | |
|
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2249 julong long_ThreadStackSize = 0; |
| 0 | 2250 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 2251 if (errcode != arg_in_range) { | |
| 2252 jio_fprintf(defaultStream::error_stream(), | |
| 2253 "Invalid thread stack size: %s\n", option->optionString); | |
| 2254 describe_range_error(errcode); | |
| 2255 return JNI_EINVAL; | |
| 2256 } | |
| 2257 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 2258 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 2259 round_to((int)long_ThreadStackSize, K) / K); | |
| 2260 // -Xoss | |
| 2261 } else if (match_option(option, "-Xoss", &tail)) { | |
| 2262 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 2263 // -Xmaxjitcodesize | |
|
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2264 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2265 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
|
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2266 julong long_ReservedCodeCacheSize = 0; |
| 0 | 2267 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
|
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2268 (size_t)InitialCodeCacheSize); |
| 0 | 2269 if (errcode != arg_in_range) { |
| 2270 jio_fprintf(defaultStream::error_stream(), | |
|
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2271 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2272 option->optionString, InitialCodeCacheSize/K); |
| 0 | 2273 describe_range_error(errcode); |
| 2274 return JNI_EINVAL; | |
| 2275 } | |
| 2276 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 2277 // -green | |
| 2278 } else if (match_option(option, "-green", &tail)) { | |
| 2279 jio_fprintf(defaultStream::error_stream(), | |
| 2280 "Green threads support not available\n"); | |
| 2281 return JNI_EINVAL; | |
| 2282 // -native | |
| 2283 } else if (match_option(option, "-native", &tail)) { | |
| 2284 // HotSpot always uses native threads, ignore silently for compatibility | |
| 2285 // -Xsqnopause | |
| 2286 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 2287 // EVM option, ignore silently for compatibility | |
| 2288 // -Xrs | |
| 2289 } else if (match_option(option, "-Xrs", &tail)) { | |
| 2290 // Classic/EVM option, new functionality | |
| 2291 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 2292 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 2293 // change default internal VM signals used - lower case for back compat | |
| 2294 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 2295 // -Xoptimize | |
| 2296 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 2297 // EVM option, ignore silently for compatibility | |
| 2298 // -Xprof | |
| 2299 } else if (match_option(option, "-Xprof", &tail)) { | |
| 2300 #ifndef FPROF_KERNEL | |
| 2301 _has_profile = true; | |
| 2302 #else // FPROF_KERNEL | |
| 2303 // do we have to exit? | |
| 2304 warning("Kernel VM does not support flat profiling."); | |
| 2305 #endif // FPROF_KERNEL | |
| 2306 // -Xaprof | |
| 2307 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2308 _has_alloc_profile = true; | |
| 2309 // -Xconcurrentio | |
| 2310 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2311 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2312 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2313 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2314 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2315 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2316 | |
| 2317 // -Xinternalversion | |
| 2318 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2319 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2320 VM_Version::internal_vm_info_string()); | |
| 2321 vm_exit(0); | |
| 2322 #ifndef PRODUCT | |
| 2323 // -Xprintflags | |
| 2324 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 2325 CommandLineFlags::printFlags(); | |
| 2326 vm_exit(0); | |
| 2327 #endif | |
| 2328 // -D | |
| 2329 } else if (match_option(option, "-D", &tail)) { | |
| 2330 if (!add_property(tail)) { | |
| 2331 return JNI_ENOMEM; | |
| 2332 } | |
| 2333 // Out of the box management support | |
| 2334 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2335 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2336 } | |
| 2337 // -Xint | |
| 2338 } else if (match_option(option, "-Xint", &tail)) { | |
| 2339 set_mode_flags(_int); | |
| 2340 // -Xmixed | |
| 2341 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2342 set_mode_flags(_mixed); | |
| 2343 // -Xcomp | |
| 2344 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2345 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2346 set_mode_flags(_comp); | |
| 2347 | |
| 2348 // -Xshare:dump | |
| 2349 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2350 #ifdef TIERED | |
| 2351 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2352 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2353 #elif defined(COMPILER2) | |
| 2354 vm_exit_during_initialization( | |
| 2355 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2356 #elif defined(KERNEL) | |
| 2357 vm_exit_during_initialization( | |
| 2358 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2359 #else | |
| 2360 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2361 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2362 #endif | |
| 2363 // -Xshare:on | |
| 2364 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2365 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2366 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2367 // -Xshare:auto | |
| 2368 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2369 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2370 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2371 // -Xshare:off | |
| 2372 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2373 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2374 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2375 | |
| 2376 // -Xverify | |
| 2377 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2378 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2379 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2380 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2381 } else if (strcmp(tail, ":remote") == 0) { | |
| 2382 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2383 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2384 } else if (strcmp(tail, ":none") == 0) { | |
| 2385 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2386 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2387 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2388 return JNI_EINVAL; | |
| 2389 } | |
| 2390 // -Xdebug | |
| 2391 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2392 // note this flag has been used, then ignore | |
| 2393 set_xdebug_mode(true); | |
| 2394 // -Xnoagent | |
| 2395 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2396 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2397 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2398 // Bind user level threads to kernel threads (Solaris only) | |
| 2399 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2400 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2401 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2402 // ostream_init_log(), when called will use this filename | |
| 2403 // to initialize a fileStream. | |
| 2404 _gc_log_filename = strdup(tail); | |
| 2405 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2406 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2407 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2408 | |
| 2409 // JNI hooks | |
| 2410 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2411 if (!strcmp(tail, ":jni")) { | |
| 2412 CheckJNICalls = true; | |
| 2413 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2414 "check")) { | |
| 2415 return JNI_EINVAL; | |
| 2416 } | |
| 2417 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2418 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2419 } else if (match_option(option, "exit", &tail)) { | |
| 2420 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2421 } else if (match_option(option, "abort", &tail)) { | |
| 2422 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2423 // -XX:+AggressiveHeap | |
| 2424 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2425 | |
| 2426 // This option inspects the machine and attempts to set various | |
| 2427 // parameters to be optimal for long-running, memory allocation | |
| 2428 // intensive jobs. It is intended for machines with large | |
| 2429 // amounts of cpu and memory. | |
| 2430 | |
| 2431 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2432 // VM, but we may not be able to represent the total physical memory | |
| 2433 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2434 // Thus, we need to make sure we're using a julong for intermediate | |
| 2435 // calculations. | |
| 2436 julong initHeapSize; | |
| 2437 julong total_memory = os::physical_memory(); | |
| 2438 | |
| 2439 if (total_memory < (julong)256*M) { | |
| 2440 jio_fprintf(defaultStream::error_stream(), | |
| 2441 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2442 vm_exit(1); | |
| 2443 } | |
| 2444 | |
| 2445 // The heap size is half of available memory, or (at most) | |
| 2446 // all of possible memory less 160mb (leaving room for the OS | |
| 2447 // when using ISM). This is the maximum; because adaptive sizing | |
| 2448 // is turned on below, the actual space used may be smaller. | |
| 2449 | |
| 2450 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2451 total_memory - (julong)160*M); | |
| 2452 | |
| 2453 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2454 // process space. The 64bit VM version of this function is a nop. | |
| 2455 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2456 | |
| 2457 // The perm gen is separate but contiguous with the | |
| 2458 // object heap (and is reserved with it) so subtract it | |
| 2459 // from the heap size. | |
| 2460 if (initHeapSize > MaxPermSize) { | |
| 2461 initHeapSize = initHeapSize - MaxPermSize; | |
| 2462 } else { | |
| 2463 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2464 } | |
| 2465 | |
| 2466 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2467 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 1064 | 2468 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
| 0 | 2469 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2470 set_min_heap_size(initHeapSize); |
| 0 | 2471 } |
| 2472 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2473 // Make the young generation 3/8ths of the total heap. | |
| 2474 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2475 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2476 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2477 } | |
| 2478 | |
| 2479 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2480 | |
| 2481 // Increase some data structure sizes for efficiency | |
| 2482 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2483 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2484 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2485 | |
| 2486 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2487 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2488 // space per-gc-thread buffers. The default is 4kw. | |
| 2489 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2490 | |
| 2491 // OldPLABSize is the size of the buffers in the old gen that | |
| 2492 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2493 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2494 // The default size is 1kw. These buffers are rarely used, since the | |
| 2495 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2496 // are occasions when there's lots of live data in the young gen | |
| 2497 // and we end up promoting some of it. We don't have a definite | |
| 2498 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2499 // is that a bigger PLAB results in retaining something like the | |
| 2500 // original allocation order after promotion, which improves mutator | |
| 2501 // locality. A minor effect may be that larger PLABs reduce the | |
| 2502 // number of PLAB allocation events during gc. The value of 8kw | |
| 2503 // was arrived at by experimenting with specjbb. | |
| 2504 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2505 | |
| 2506 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
| 2507 // a more conservative which-method-do-I-compile policy when one | |
| 2508 // of the counters maintained by the interpreter trips. The | |
| 2509 // result is reduced startup time and improved specjbb and | |
| 2510 // alacrity performance. Zero is the default, but we set it | |
| 2511 // explicitly here in case the default changes. | |
| 2512 // See runtime/compilationPolicy.*. | |
| 2513 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
| 2514 | |
| 2515 // Enable parallel GC and adaptive generation sizing | |
| 2516 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
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2517 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2518 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2519 |
| 2520 // Encourage steady state memory management | |
| 2521 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2522 | |
| 2523 // This appears to improve mutator locality | |
| 2524 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2525 | |
| 2526 // Get around early Solaris scheduling bug | |
| 2527 // (affinity vs other jobs on system) | |
| 2528 // but disallow DR and offlining (5008695). | |
| 2529 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2530 | |
| 2531 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2532 // The last option must always win. | |
| 2533 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2534 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2535 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2536 // The last option must always win. | |
| 2537 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2538 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2539 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2540 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2541 jio_fprintf(defaultStream::error_stream(), | |
| 2542 "Please use CMSClassUnloadingEnabled in place of " | |
| 2543 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2544 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2545 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2546 jio_fprintf(defaultStream::error_stream(), | |
| 2547 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2548 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2549 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2550 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2551 jio_fprintf(defaultStream::error_stream(), | |
| 2552 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2553 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2554 // The TLE options are for compatibility with 1.3 and will be | |
| 2555 // removed without notice in a future release. These options | |
| 2556 // are not to be documented. | |
| 2557 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2558 // No longer used. | |
| 2559 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2560 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2561 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2562 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2563 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2564 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2565 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2566 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2567 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2568 // No longer used. | |
| 2569 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
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2570 julong long_tlab_size = 0; |
| 0 | 2571 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2572 if (errcode != arg_in_range) { | |
| 2573 jio_fprintf(defaultStream::error_stream(), | |
| 2574 "Invalid TLAB size: %s\n", option->optionString); | |
| 2575 describe_range_error(errcode); | |
| 2576 return JNI_EINVAL; | |
| 2577 } | |
| 2578 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2579 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2580 // No longer used. | |
| 2581 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2582 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2583 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2584 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2585 SOLARIS_ONLY( | |
| 2586 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2587 warning("-XX:+UsePermISM is obsolete."); | |
| 2588 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2589 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2590 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2591 ) | |
| 2592 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2593 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2594 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2595 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2596 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2597 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2598 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 2599 #ifdef SOLARIS | |
| 2600 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
| 2601 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2602 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2603 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 2604 #else // ndef SOLARIS | |
| 2605 jio_fprintf(defaultStream::error_stream(), | |
| 2606 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
| 2607 return JNI_EINVAL; | |
| 2608 #endif // ndef SOLARIS | |
| 2609 #ifdef ASSERT | |
|
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2610 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
| 0 | 2611 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
| 2612 // disable scavenge before parallel mark-compact | |
| 2613 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2614 #endif | |
|
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2615 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
| 0 | 2616 julong cms_blocks_to_claim = (julong)atol(tail); |
| 2617 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2618 jio_fprintf(defaultStream::error_stream(), | |
|
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2619 "Please use -XX:OldPLABSize in place of " |
|
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2620 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
|
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|
2621 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
|
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2622 julong cms_blocks_to_claim = (julong)atol(tail); |
|
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2623 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
|
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2624 jio_fprintf(defaultStream::error_stream(), |
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|
2625 "Please use -XX:OldPLABSize in place of " |
| 0 | 2626 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
|
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2627 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
|
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2628 julong old_plab_size = 0; |
| 0 | 2629 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2630 if (errcode != arg_in_range) { | |
| 2631 jio_fprintf(defaultStream::error_stream(), | |
| 2632 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2633 describe_range_error(errcode); | |
| 2634 return JNI_EINVAL; | |
| 2635 } | |
|
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|
2636 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2637 jio_fprintf(defaultStream::error_stream(), |
| 2638 "Please use -XX:OldPLABSize in place of " | |
| 2639 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
|
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2640 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
|
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2641 julong young_plab_size = 0; |
| 0 | 2642 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2643 if (errcode != arg_in_range) { | |
| 2644 jio_fprintf(defaultStream::error_stream(), | |
| 2645 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2646 describe_range_error(errcode); | |
| 2647 return JNI_EINVAL; | |
| 2648 } | |
|
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|
2649 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2650 jio_fprintf(defaultStream::error_stream(), |
| 2651 "Please use -XX:YoungPLABSize in place of " | |
| 2652 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 1284 | 2653 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
| 2654 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
| 2655 julong stack_size = 0; | |
| 2656 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
| 2657 if (errcode != arg_in_range) { | |
| 2658 jio_fprintf(defaultStream::error_stream(), | |
| 2659 "Invalid mark stack size: %s\n", option->optionString); | |
| 2660 describe_range_error(errcode); | |
| 2661 return JNI_EINVAL; | |
| 2662 } | |
| 2663 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
| 2664 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
| 2665 julong max_stack_size = 0; | |
| 2666 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
| 2667 if (errcode != arg_in_range) { | |
| 2668 jio_fprintf(defaultStream::error_stream(), | |
| 2669 "Invalid maximum mark stack size: %s\n", | |
| 2670 option->optionString); | |
| 2671 describe_range_error(errcode); | |
| 2672 return JNI_EINVAL; | |
| 2673 } | |
| 2674 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
| 2675 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
| 2676 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
| 2677 uintx conc_threads = 0; | |
| 2678 if (!parse_uintx(tail, &conc_threads, 1)) { | |
| 2679 jio_fprintf(defaultStream::error_stream(), | |
| 2680 "Invalid concurrent threads: %s\n", option->optionString); | |
| 2681 return JNI_EINVAL; | |
| 2682 } | |
| 2683 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
|
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2684 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
| 0 | 2685 // Skip -XX:Flags= since that case has already been handled |
| 2686 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2687 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2688 return JNI_EINVAL; | |
| 2689 } | |
| 2690 } | |
| 2691 // Unknown option | |
| 2692 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2693 return JNI_ERR; | |
| 2694 } | |
| 2695 } | |
|
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2696 // Change the default value for flags which have different default values |
|
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2697 // when working with older JDKs. |
|
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2698 if (JDK_Version::current().compare_major(6) <= 0 && |
|
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2699 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
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2700 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
|
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2701 } |
|
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|
2702 #ifdef LINUX |
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2703 if (JDK_Version::current().compare_major(6) <= 0 && |
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changeset
|
2704 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2705 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2706 } |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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diff
changeset
|
2707 #endif // LINUX |
| 0 | 2708 return JNI_OK; |
| 2709 } | |
| 2710 | |
| 2711 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2712 // This must be done after all -D arguments have been processed. | |
| 2713 scp_p->expand_endorsed(); | |
| 2714 | |
| 2715 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2716 // Assemble the bootclasspath elements into the final path. | |
| 2717 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2718 } | |
| 2719 | |
| 2720 // This must be done after all arguments have been processed. | |
| 2721 // java_compiler() true means set to "NONE" or empty. | |
| 2722 if (java_compiler() && !xdebug_mode()) { | |
| 2723 // For backwards compatibility, we switch to interpreted mode if | |
| 2724 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2725 // not specified. | |
| 2726 set_mode_flags(_int); | |
| 2727 } | |
| 2728 if (CompileThreshold == 0) { | |
| 2729 set_mode_flags(_int); | |
| 2730 } | |
| 2731 | |
| 2732 #ifndef COMPILER2 | |
| 2733 // Don't degrade server performance for footprint | |
| 2734 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2735 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2736 // No need for large granularity pages w/small heaps. | |
| 2737 // Note that large pages are enabled/disabled for both the | |
| 2738 // Java heap and the code cache. | |
| 2739 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2740 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2741 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2742 } | |
|
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|
2743 |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
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1188
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changeset
|
2744 // Tiered compilation is undefined with C1. |
|
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
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parents:
1188
diff
changeset
|
2745 TieredCompilation = false; |
| 0 | 2746 #else |
| 2747 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2748 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2749 } | |
|
342
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|
2750 // Temporary disable bulk zeroing reduction with G1. See CR 6627983. |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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135
diff
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|
2751 if (UseG1GC) { |
|
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parents:
135
diff
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|
2752 FLAG_SET_DEFAULT(ReduceBulkZeroing, false); |
|
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diff
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|
2753 } |
| 0 | 2754 #endif |
| 2755 | |
|
1681
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bobv
parents:
1679
diff
changeset
|
2756 // If we are running in a headless jre, force java.awt.headless property |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2757 // to be true unless the property has already been set. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2758 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2759 if (os::is_headless_jre()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2760 const char* headless = Arguments::get_property("java.awt.headless"); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2761 if (headless == NULL) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2762 char envbuffer[128]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2763 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2764 if (!add_property("java.awt.headless=true")) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2765 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2766 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2767 } else { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2768 char buffer[256]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2769 strcpy(buffer, "java.awt.headless="); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2770 strcat(buffer, envbuffer); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2771 if (!add_property(buffer)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2772 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2773 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2774 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2775 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2776 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
1679
diff
changeset
|
2777 |
| 0 | 2778 if (!check_vm_args_consistency()) { |
| 2779 return JNI_ERR; | |
| 2780 } | |
| 2781 | |
| 2782 return JNI_OK; | |
| 2783 } | |
| 2784 | |
| 2785 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2786 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2787 scp_assembly_required_p); | |
| 2788 } | |
| 2789 | |
| 2790 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2791 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2792 scp_assembly_required_p); | |
| 2793 } | |
| 2794 | |
| 2795 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2796 const int N_MAX_OPTIONS = 64; | |
| 2797 const int OPTION_BUFFER_SIZE = 1024; | |
| 2798 char buffer[OPTION_BUFFER_SIZE]; | |
| 2799 | |
| 2800 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2801 // Don't check this variable if user has special privileges | |
| 2802 // (e.g. unix su command). | |
| 2803 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2804 !os::have_special_privileges()) { | |
| 2805 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2806 jio_fprintf(defaultStream::error_stream(), | |
| 2807 "Picked up %s: %s\n", name, buffer); | |
| 2808 char* rd = buffer; // pointer to the input string (rd) | |
| 2809 int i; | |
| 2810 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2811 while (isspace(*rd)) rd++; // skip whitespace | |
| 2812 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2813 | |
| 2814 // The output, option string, overwrites the input string. | |
| 2815 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2816 // input string (rd). | |
| 2817 char* wrt = rd; | |
| 2818 | |
| 2819 options[i++].optionString = wrt; // Fill in option | |
| 2820 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2821 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2822 int quote = *rd; // matching quote to look for | |
| 2823 rd++; // don't copy open quote | |
| 2824 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2825 if (*rd == 0) { // string termination means unmatched string | |
| 2826 jio_fprintf(defaultStream::error_stream(), | |
| 2827 "Unmatched quote in %s\n", name); | |
| 2828 return JNI_ERR; | |
| 2829 } | |
| 2830 *wrt++ = *rd++; // copy to option string | |
| 2831 } | |
| 2832 rd++; // don't copy close quote | |
| 2833 } else { | |
| 2834 *wrt++ = *rd++; // copy to option string | |
| 2835 } | |
| 2836 } | |
| 2837 // Need to check if we're done before writing a NULL, | |
| 2838 // because the write could be to the byte that rd is pointing to. | |
| 2839 if (*rd++ == 0) { | |
| 2840 *wrt = 0; | |
| 2841 break; | |
| 2842 } | |
| 2843 *wrt = 0; // Zero terminate option | |
| 2844 } | |
| 2845 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2846 JavaVMInitArgs vm_args; | |
| 2847 vm_args.version = JNI_VERSION_1_2; | |
| 2848 vm_args.options = options; | |
| 2849 vm_args.nOptions = i; | |
| 564 | 2850 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2851 |
| 2852 if (PrintVMOptions) { | |
| 2853 const char* tail; | |
| 2854 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2855 const JavaVMOption *option = vm_args.options + i; | |
| 2856 if (match_option(option, "-XX:", &tail)) { | |
| 2857 logOption(tail); | |
| 2858 } | |
| 2859 } | |
| 2860 } | |
| 2861 | |
| 2862 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2863 } | |
| 2864 return JNI_OK; | |
| 2865 } | |
| 2866 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
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|
2867 void Arguments::set_shared_spaces_flags() { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2868 // Check whether class data sharing settings conflict with GC, compressed oops |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2869 // or page size, and fix them up. Explicit sharing options override other |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2870 // settings. |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2871 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2872 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2873 UseCompressedOops || UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2874 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2875 const bool might_share = must_share || UseSharedSpaces; |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2876 if (cannot_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2877 if (must_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2878 warning("selecting serial gc and disabling large pages %s" |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2879 "because of %s", "" LP64_ONLY("and compressed oops "), |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2880 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2881 force_serial_gc(); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2882 FLAG_SET_CMDLINE(bool, UseLargePages, false); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2883 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2884 } else { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2885 if (UseSharedSpaces && Verbose) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2886 warning("turning off use of shared archive because of " |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2887 "choice of garbage collector or large pages"); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2888 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2889 no_shared_spaces(); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2890 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2891 } else if (UseLargePages && might_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2892 // Disable large pages to allow shared spaces. This is sub-optimal, since |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2893 // there may not even be a shared archive to use. |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2894 FLAG_SET_DEFAULT(UseLargePages, false); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2895 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2896 } |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
2897 |
| 0 | 2898 // Parse entry point called from JNI_CreateJavaVM |
| 2899 | |
| 2900 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2901 | |
| 2902 // Sharing support | |
| 2903 // Construct the path to the archive | |
| 2904 char jvm_path[JVM_MAXPATHLEN]; | |
| 2905 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2906 #ifdef TIERED | |
| 2907 if (strstr(jvm_path, "client") != NULL) { | |
| 2908 force_client_mode = true; | |
| 2909 } | |
| 2910 #endif // TIERED | |
| 2911 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2912 if (end != NULL) *end = '\0'; | |
| 2913 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2914 strlen(os::file_separator()) + 20); | |
| 2915 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2916 strcpy(shared_archive_path, jvm_path); | |
| 2917 strcat(shared_archive_path, os::file_separator()); | |
| 2918 strcat(shared_archive_path, "classes"); | |
| 2919 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2920 strcat(shared_archive_path, ".jsa"); | |
| 2921 SharedArchivePath = shared_archive_path; | |
| 2922 | |
| 2923 // Remaining part of option string | |
| 2924 const char* tail; | |
| 2925 | |
| 2926 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2927 bool settings_file_specified = false; | |
| 564 | 2928 const char* flags_file; |
| 0 | 2929 int index; |
| 2930 for (index = 0; index < args->nOptions; index++) { | |
| 2931 const JavaVMOption *option = args->options + index; | |
| 2932 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2933 flags_file = tail; |
| 0 | 2934 settings_file_specified = true; |
| 2935 } | |
| 2936 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2937 PrintVMOptions = true; | |
| 2938 } | |
|
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2939 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2940 PrintVMOptions = false; |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2941 } |
| 564 | 2942 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2943 IgnoreUnrecognizedVMOptions = true; | |
| 2944 } | |
| 2945 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2946 IgnoreUnrecognizedVMOptions = false; | |
| 2947 } | |
| 1150 | 2948 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
| 2949 CommandLineFlags::printFlags(); | |
| 2950 vm_exit(0); | |
| 2951 } | |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2952 |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2953 #ifndef PRODUCT |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2954 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2955 CommandLineFlags::printFlags(true); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2956 vm_exit(0); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2957 } |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2958 #endif |
| 564 | 2959 } |
| 2960 | |
| 2961 if (IgnoreUnrecognizedVMOptions) { | |
| 2962 // uncast const to modify the flag args->ignoreUnrecognized | |
| 2963 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 2964 } | |
| 2965 | |
| 2966 // Parse specified settings file | |
| 2967 if (settings_file_specified) { | |
| 2968 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 2969 return JNI_EINVAL; | |
| 2970 } | |
| 0 | 2971 } |
| 2972 | |
| 2973 // Parse default .hotspotrc settings file | |
| 2974 if (!settings_file_specified) { | |
| 2975 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 2976 return JNI_EINVAL; | |
| 2977 } | |
| 2978 } | |
| 2979 | |
| 2980 if (PrintVMOptions) { | |
| 2981 for (index = 0; index < args->nOptions; index++) { | |
| 2982 const JavaVMOption *option = args->options + index; | |
| 2983 if (match_option(option, "-XX:", &tail)) { | |
| 2984 logOption(tail); | |
| 2985 } | |
| 2986 } | |
| 2987 } | |
| 2988 | |
| 2989 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 2990 jint result = parse_vm_init_args(args); | |
| 2991 if (result != JNI_OK) { | |
| 2992 return result; | |
| 2993 } | |
| 2994 | |
| 2995 #ifndef PRODUCT | |
| 2996 if (TraceBytecodesAt != 0) { | |
| 2997 TraceBytecodes = true; | |
| 2998 } | |
| 2999 if (CountCompiledCalls) { | |
| 3000 if (UseCounterDecay) { | |
| 3001 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 3002 UseCounterDecay = false; | |
| 3003 } | |
| 3004 } | |
| 3005 #endif // PRODUCT | |
| 3006 | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3007 if (EnableInvokeDynamic && !EnableMethodHandles) { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3008 if (!FLAG_IS_DEFAULT(EnableMethodHandles)) { |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3009 warning("forcing EnableMethodHandles true because EnableInvokeDynamic is true"); |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3010 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3011 EnableMethodHandles = true; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3012 } |
| 710 | 3013 if (EnableMethodHandles && !AnonymousClasses) { |
| 3014 if (!FLAG_IS_DEFAULT(AnonymousClasses)) { | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3015 warning("forcing AnonymousClasses true because EnableMethodHandles is true"); |
| 710 | 3016 } |
| 3017 AnonymousClasses = true; | |
| 3018 } | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3019 if ((EnableMethodHandles || AnonymousClasses) && ScavengeRootsInCode == 0) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3020 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3021 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
|
3022 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3023 ScavengeRootsInCode = 1; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3024 } |
| 710 | 3025 |
| 0 | 3026 if (PrintGCDetails) { |
| 3027 // Turn on -verbose:gc options as well | |
| 3028 PrintGC = true; | |
| 3029 } | |
| 3030 | |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3031 // 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
|
3032 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
|
3033 |
| 0 | 3034 #ifdef SERIALGC |
| 1064 | 3035 force_serial_gc(); |
| 0 | 3036 #endif // SERIALGC |
| 3037 #ifdef KERNEL | |
| 3038 no_shared_spaces(); | |
| 3039 #endif // KERNEL | |
| 3040 | |
| 3041 // Set flags based on ergonomics. | |
| 3042 set_ergonomics_flags(); | |
| 3043 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3044 set_shared_spaces_flags(); |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3045 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3046 // Check the GC selections again. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3047 if (!check_gc_consistency()) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3048 return JNI_EINVAL; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3049 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3050 |
| 1783 | 3051 if (TieredCompilation) { |
| 3052 set_tiered_flags(); | |
| 3053 } else { | |
| 3054 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
| 3055 if (CompilationPolicyChoice >= 2) { | |
| 3056 vm_exit_during_initialization( | |
| 3057 "Incompatible compilation policy selected", NULL); | |
| 3058 } | |
| 3059 } | |
| 3060 | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3061 #ifndef KERNEL |
| 1064 | 3062 if (UseConcMarkSweepGC) { |
| 3063 // Set flags for CMS and ParNew. Check UseConcMarkSweep first | |
| 3064 // to ensure that when both UseConcMarkSweepGC and UseParNewGC | |
| 3065 // 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
|
3066 set_cms_and_parnew_gc_flags(); |
| 1064 | 3067 } else { |
| 3068 // Set heap size based on available physical memory | |
| 3069 set_heap_size(); | |
| 3070 // Set per-collector flags | |
| 3071 if (UseParallelGC || UseParallelOldGC) { | |
| 3072 set_parallel_gc_flags(); | |
| 3073 } else if (UseParNewGC) { | |
| 3074 set_parnew_gc_flags(); | |
| 3075 } else if (UseG1GC) { | |
| 3076 set_g1_gc_flags(); | |
| 3077 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3078 } |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3079 #endif // KERNEL |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3080 |
| 0 | 3081 #ifdef SERIALGC |
| 3082 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 3083 #endif // SERIALGC | |
| 3084 | |
| 3085 // Set bytecode rewriting flags | |
| 3086 set_bytecode_flags(); | |
| 3087 | |
| 3088 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 3089 set_aggressive_opts_flags(); | |
| 3090 | |
|
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3091 // Turn off biased locking for locking debug mode flags, |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3092 // which are subtlely different from each other but neither works with |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3093 // biased locking. |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3094 if (!UseFastLocking || UseHeavyMonitors) { |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3095 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3096 // flag set to true on command line; warn the user that they |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3097 // can't enable biased locking here |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3098 warning("Biased Locking is not supported with locking debug flags" |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3099 "; ignoring UseBiasedLocking flag." ); |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3100 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3101 UseBiasedLocking = false; |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3102 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3103 |
| 0 | 3104 #ifdef CC_INTERP |
| 1131 | 3105 // Clear flags not supported by the C++ interpreter |
| 3106 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
| 0 | 3107 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
| 1131 | 3108 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
| 3109 #endif // CC_INTERP | |
| 3110 | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3111 #ifdef COMPILER2 |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3112 if (!UseBiasedLocking || EmitSync != 0) { |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3113 UseOptoBiasInlining = false; |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3114 } |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3115 #endif |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3116 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3117 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3118 warning("PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3119 DebugNonSafepoints = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3120 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3121 |
|
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3122 #ifndef PRODUCT |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3123 if (CompileTheWorld) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3124 // Force NmethodSweeper to sweep whole CodeCache each time. |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3125 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3126 NmethodSweepFraction = 1; |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3127 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3128 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3129 #endif |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3130 |
| 0 | 3131 if (PrintCommandLineFlags) { |
| 3132 CommandLineFlags::printSetFlags(); | |
| 3133 } | |
| 3134 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3135 // Apply CPU specific policy for the BiasedLocking |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3136 if (UseBiasedLocking) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3137 if (!VM_Version::use_biased_locking() && |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3138 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3139 UseBiasedLocking = false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3140 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3141 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3142 |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3143 // set PauseAtExit if the gamma launcher was used and a debugger is attached |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3144 // but only if not already set on the commandline |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3145 if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3146 bool set = false; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3147 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3148 if (!set) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3149 FLAG_SET_DEFAULT(PauseAtExit, true); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3150 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3151 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3152 |
| 0 | 3153 return JNI_OK; |
| 3154 } | |
| 3155 | |
| 3156 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 3157 int count = 0; | |
| 3158 while(pl != NULL) { | |
| 3159 count++; | |
| 3160 pl = pl->next(); | |
| 3161 } | |
| 3162 return count; | |
| 3163 } | |
| 3164 | |
| 3165 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 3166 assert(key != NULL, "just checking"); | |
| 3167 SystemProperty* prop; | |
| 3168 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 3169 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 3170 } | |
| 3171 return NULL; | |
| 3172 } | |
| 3173 | |
| 3174 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 3175 int count = 0; | |
| 3176 const char* ret_val = NULL; | |
| 3177 | |
| 3178 while(pl != NULL) { | |
| 3179 if(count >= index) { | |
| 3180 ret_val = pl->key(); | |
| 3181 break; | |
| 3182 } | |
| 3183 count++; | |
| 3184 pl = pl->next(); | |
| 3185 } | |
| 3186 | |
| 3187 return ret_val; | |
| 3188 } | |
| 3189 | |
| 3190 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 3191 int count = 0; | |
| 3192 char* ret_val = NULL; | |
| 3193 | |
| 3194 while(pl != NULL) { | |
| 3195 if(count >= index) { | |
| 3196 ret_val = pl->value(); | |
| 3197 break; | |
| 3198 } | |
| 3199 count++; | |
| 3200 pl = pl->next(); | |
| 3201 } | |
| 3202 | |
| 3203 return ret_val; | |
| 3204 } | |
| 3205 | |
| 3206 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 3207 SystemProperty* p = *plist; | |
| 3208 if (p == NULL) { | |
| 3209 *plist = new_p; | |
| 3210 } else { | |
| 3211 while (p->next() != NULL) { | |
| 3212 p = p->next(); | |
| 3213 } | |
| 3214 p->set_next(new_p); | |
| 3215 } | |
| 3216 } | |
| 3217 | |
| 3218 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 3219 if (plist == NULL) | |
| 3220 return; | |
| 3221 | |
| 3222 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 3223 PropertyList_add(plist, new_p); | |
| 3224 } | |
| 3225 | |
| 3226 // This add maintains unique property key in the list. | |
| 691 | 3227 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 3228 if (plist == NULL) |
| 3229 return; | |
| 3230 | |
| 3231 // If property key exist then update with new value. | |
| 3232 SystemProperty* prop; | |
| 3233 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 3234 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 3235 if (append) { |
| 3236 prop->append_value(v); | |
| 3237 } else { | |
| 3238 prop->set_value(v); | |
| 3239 } | |
| 0 | 3240 return; |
| 3241 } | |
| 3242 } | |
| 3243 | |
| 3244 PropertyList_add(plist, k, v); | |
| 3245 } | |
| 3246 | |
| 3247 #ifdef KERNEL | |
| 3248 char *Arguments::get_kernel_properties() { | |
| 3249 // Find properties starting with kernel and append them to string | |
| 3250 // We need to find out how long they are first because the URL's that they | |
| 3251 // might point to could get long. | |
| 3252 int length = 0; | |
| 3253 SystemProperty* prop; | |
| 3254 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3255 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3256 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 3257 } | |
| 3258 } | |
| 3259 // Add one for null terminator. | |
| 3260 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 3261 if (length != 0) { | |
| 3262 int pos = 0; | |
| 3263 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3264 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3265 jio_snprintf(&props[pos], length-pos, | |
| 3266 "-D%s=%s ", prop->key(), prop->value()); | |
| 3267 pos = strlen(props); | |
| 3268 } | |
| 3269 } | |
| 3270 } | |
| 3271 // null terminate props in case of null | |
| 3272 props[length] = '\0'; | |
| 3273 return props; | |
| 3274 } | |
| 3275 #endif // KERNEL | |
| 3276 | |
| 3277 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 3278 // Returns true if all of the source pointed by src has been copied over to | |
| 3279 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 3280 // Notes: | |
| 3281 // 1. If the length (buflen) of the destination buffer excluding the | |
| 3282 // NULL terminator character is not long enough for holding the expanded | |
| 3283 // pid characters, it also returns false instead of returning the partially | |
| 3284 // expanded one. | |
| 3285 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 3286 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 3287 char* buf, size_t buflen) { | |
| 3288 const char* p = src; | |
| 3289 char* b = buf; | |
| 3290 const char* src_end = &src[srclen]; | |
| 3291 char* buf_end = &buf[buflen - 1]; | |
| 3292 | |
| 3293 while (p < src_end && b < buf_end) { | |
| 3294 if (*p == '%') { | |
| 3295 switch (*(++p)) { | |
| 3296 case '%': // "%%" ==> "%" | |
| 3297 *b++ = *p++; | |
| 3298 break; | |
| 3299 case 'p': { // "%p" ==> current process id | |
| 3300 // buf_end points to the character before the last character so | |
| 3301 // that we could write '\0' to the end of the buffer. | |
| 3302 size_t buf_sz = buf_end - b + 1; | |
| 3303 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 3304 | |
| 3305 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 3306 // the expanded pid, returns false. | |
| 3307 if (ret < 0 || ret >= (int)buf_sz) { | |
| 3308 return false; | |
| 3309 } else { | |
| 3310 b += ret; | |
| 3311 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 3312 if (p == src_end && b == buf_end + 1) { | |
| 3313 // reach the end of the buffer. | |
| 3314 return true; | |
| 3315 } | |
| 3316 } | |
| 3317 p++; | |
| 3318 break; | |
| 3319 } | |
| 3320 default : | |
| 3321 *b++ = '%'; | |
| 3322 } | |
| 3323 } else { | |
| 3324 *b++ = *p++; | |
| 3325 } | |
| 3326 } | |
| 3327 *b = '\0'; | |
| 3328 return (p == src_end); // return false if not all of the source was copied | |
| 3329 } |