Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 2460:ed69575596ac
6981791: remove experimental code for JSR 292
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Thu, 07 Apr 2011 17:02:30 -0700 |
| parents | 98c560260039 |
| children | 3449f5e02cc4 5d046bf49ce7 |
| 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) }, |
| 2460 | 246 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
| 242 | 247 { NULL, JDK_Version(0), JDK_Version(0) } |
| 248 }; | |
| 249 | |
| 250 // Returns true if the flag is obsolete and fits into the range specified | |
| 251 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 252 // value is filled in with the version number when the flag became | |
| 253 // obsolete so that that value can be displayed to the user. | |
| 254 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 255 int i = 0; |
| 242 | 256 assert(version != NULL, "Must provide a version buffer"); |
| 257 while (obsolete_jvm_flags[i].name != NULL) { | |
| 258 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 259 // <flag>=xxx form |
| 260 // [-|+]<flag> form | |
| 242 | 261 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 262 ((s[0] == '+' || s[0] == '-') && |
| 242 | 263 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 264 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 265 *version = flag_status.obsoleted_in; | |
| 266 return true; | |
| 267 } | |
| 0 | 268 } |
| 269 i++; | |
| 270 } | |
| 271 return false; | |
| 272 } | |
| 273 | |
| 274 // Constructs the system class path (aka boot class path) from the following | |
| 275 // components, in order: | |
| 276 // | |
| 277 // prefix // from -Xbootclasspath/p:... | |
| 278 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 279 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 280 // suffix // from -Xbootclasspath/a:... | |
| 281 // | |
| 282 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 283 // directories are added to the sysclasspath just before the base. | |
| 284 // | |
| 285 // This could be AllStatic, but it isn't needed after argument processing is | |
| 286 // complete. | |
| 287 class SysClassPath: public StackObj { | |
| 288 public: | |
| 289 SysClassPath(const char* base); | |
| 290 ~SysClassPath(); | |
| 291 | |
| 292 inline void set_base(const char* base); | |
| 293 inline void add_prefix(const char* prefix); | |
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294 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 295 inline void add_suffix(const char* suffix); |
| 296 inline void reset_path(const char* base); | |
| 297 | |
| 298 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 299 // property. Must be called after all command-line arguments have been | |
| 300 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 301 // combined_path(). | |
| 302 void expand_endorsed(); | |
| 303 | |
| 304 inline const char* get_base() const { return _items[_scp_base]; } | |
| 305 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 306 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 307 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 308 | |
| 309 // Combine all the components into a single c-heap-allocated string; caller | |
| 310 // must free the string if/when no longer needed. | |
| 311 char* combined_path(); | |
| 312 | |
| 313 private: | |
| 314 // Utility routines. | |
| 315 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 316 static char* add_jars_to_path(char* path, const char* directory); | |
| 317 | |
| 318 inline void reset_item_at(int index); | |
| 319 | |
| 320 // Array indices for the items that make up the sysclasspath. All except the | |
| 321 // base are allocated in the C heap and freed by this class. | |
| 322 enum { | |
| 323 _scp_prefix, // from -Xbootclasspath/p:... | |
| 324 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 325 _scp_base, // the default sysclasspath | |
| 326 _scp_suffix, // from -Xbootclasspath/a:... | |
| 327 _scp_nitems // the number of items, must be last. | |
| 328 }; | |
| 329 | |
| 330 const char* _items[_scp_nitems]; | |
| 331 DEBUG_ONLY(bool _expansion_done;) | |
| 332 }; | |
| 333 | |
| 334 SysClassPath::SysClassPath(const char* base) { | |
| 335 memset(_items, 0, sizeof(_items)); | |
| 336 _items[_scp_base] = base; | |
| 337 DEBUG_ONLY(_expansion_done = false;) | |
| 338 } | |
| 339 | |
| 340 SysClassPath::~SysClassPath() { | |
| 341 // Free everything except the base. | |
| 342 for (int i = 0; i < _scp_nitems; ++i) { | |
| 343 if (i != _scp_base) reset_item_at(i); | |
| 344 } | |
| 345 DEBUG_ONLY(_expansion_done = false;) | |
| 346 } | |
| 347 | |
| 348 inline void SysClassPath::set_base(const char* base) { | |
| 349 _items[_scp_base] = base; | |
| 350 } | |
| 351 | |
| 352 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 353 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 354 } | |
| 355 | |
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356 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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357 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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358 } |
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359 |
| 0 | 360 inline void SysClassPath::add_suffix(const char* suffix) { |
| 361 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 362 } | |
| 363 | |
| 364 inline void SysClassPath::reset_item_at(int index) { | |
| 365 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 366 if (_items[index] != NULL) { | |
| 367 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 368 _items[index] = NULL; | |
| 369 } | |
| 370 } | |
| 371 | |
| 372 inline void SysClassPath::reset_path(const char* base) { | |
| 373 // Clear the prefix and suffix. | |
| 374 reset_item_at(_scp_prefix); | |
| 375 reset_item_at(_scp_suffix); | |
| 376 set_base(base); | |
| 377 } | |
| 378 | |
| 379 //------------------------------------------------------------------------------ | |
| 380 | |
| 381 void SysClassPath::expand_endorsed() { | |
| 382 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 383 | |
| 384 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 385 if (path == NULL) { | |
| 386 path = Arguments::get_endorsed_dir(); | |
| 387 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 388 } | |
| 389 | |
| 390 char* expanded_path = NULL; | |
| 391 const char separator = *os::path_separator(); | |
| 392 const char* const end = path + strlen(path); | |
| 393 while (path < end) { | |
| 394 const char* tmp_end = strchr(path, separator); | |
| 395 if (tmp_end == NULL) { | |
| 396 expanded_path = add_jars_to_path(expanded_path, path); | |
| 397 path = end; | |
| 398 } else { | |
| 399 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 400 memcpy(dirpath, path, tmp_end - path); | |
| 401 dirpath[tmp_end - path] = '\0'; | |
| 402 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 403 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 404 path = tmp_end + 1; | |
| 405 } | |
| 406 } | |
| 407 _items[_scp_endorsed] = expanded_path; | |
| 408 DEBUG_ONLY(_expansion_done = true;) | |
| 409 } | |
| 410 | |
| 411 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 412 // c-heap-allocated string. | |
| 413 char* SysClassPath::combined_path() { | |
| 414 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 415 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 416 | |
| 417 size_t lengths[_scp_nitems]; | |
| 418 size_t total_len = 0; | |
| 419 | |
| 420 const char separator = *os::path_separator(); | |
| 421 | |
| 422 // Get the lengths. | |
| 423 int i; | |
| 424 for (i = 0; i < _scp_nitems; ++i) { | |
| 425 if (_items[i] != NULL) { | |
| 426 lengths[i] = strlen(_items[i]); | |
| 427 // Include space for the separator char (or a NULL for the last item). | |
| 428 total_len += lengths[i] + 1; | |
| 429 } | |
| 430 } | |
| 431 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 432 | |
| 433 // Copy the _items to a single string. | |
| 434 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 435 char* cp_tmp = cp; | |
| 436 for (i = 0; i < _scp_nitems; ++i) { | |
| 437 if (_items[i] != NULL) { | |
| 438 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 439 cp_tmp += lengths[i]; | |
| 440 *cp_tmp++ = separator; | |
| 441 } | |
| 442 } | |
| 443 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 444 return cp; | |
| 445 } | |
| 446 | |
| 447 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 448 char* | |
| 449 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 450 char *cp; | |
| 451 | |
| 452 assert(str != NULL, "just checking"); | |
| 453 if (path == NULL) { | |
| 454 size_t len = strlen(str) + 1; | |
| 455 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 456 memcpy(cp, str, len); // copy the trailing null | |
| 457 } else { | |
| 458 const char separator = *os::path_separator(); | |
| 459 size_t old_len = strlen(path); | |
| 460 size_t str_len = strlen(str); | |
| 461 size_t len = old_len + str_len + 2; | |
| 462 | |
| 463 if (prepend) { | |
| 464 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 465 char* cp_tmp = cp; | |
| 466 memcpy(cp_tmp, str, str_len); | |
| 467 cp_tmp += str_len; | |
| 468 *cp_tmp = separator; | |
| 469 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 470 FREE_C_HEAP_ARRAY(char, path); | |
| 471 } else { | |
| 472 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 473 char* cp_tmp = cp + old_len; | |
| 474 *cp_tmp = separator; | |
| 475 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 476 } | |
| 477 } | |
| 478 return cp; | |
| 479 } | |
| 480 | |
| 481 // Scan the directory and append any jar or zip files found to path. | |
| 482 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 483 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 484 DIR* dir = os::opendir(directory); | |
| 485 if (dir == NULL) return path; | |
| 486 | |
| 487 char dir_sep[2] = { '\0', '\0' }; | |
| 488 size_t directory_len = strlen(directory); | |
| 489 const char fileSep = *os::file_separator(); | |
| 490 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 491 | |
| 492 /* Scan the directory for jars/zips, appending them to path. */ | |
| 493 struct dirent *entry; | |
| 494 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 495 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 496 const char* name = entry->d_name; | |
| 497 const char* ext = name + strlen(name) - 4; | |
| 498 bool isJarOrZip = ext > name && | |
| 499 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 500 os::file_name_strcmp(ext, ".zip") == 0); | |
| 501 if (isJarOrZip) { | |
| 502 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 503 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 504 path = add_to_path(path, jarpath, false); | |
| 505 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 506 } | |
| 507 } | |
| 508 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 509 os::closedir(dir); | |
| 510 return path; | |
| 511 } | |
| 512 | |
| 513 // Parses a memory size specification string. | |
|
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514 static bool atomull(const char *s, julong* result) { |
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515 julong n = 0; |
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516 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 517 if (args_read != 1) { |
| 518 return false; | |
| 519 } | |
| 520 while (*s != '\0' && isdigit(*s)) { | |
| 521 s++; | |
| 522 } | |
| 523 // 4705540: illegal if more characters are found after the first non-digit | |
| 524 if (strlen(s) > 1) { | |
| 525 return false; | |
| 526 } | |
| 527 switch (*s) { | |
| 528 case 'T': case 't': | |
| 529 *result = n * G * K; | |
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530 // Check for overflow. |
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531 if (*result/((julong)G * K) != n) return false; |
| 0 | 532 return true; |
| 533 case 'G': case 'g': | |
| 534 *result = n * G; | |
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535 if (*result/G != n) return false; |
| 0 | 536 return true; |
| 537 case 'M': case 'm': | |
| 538 *result = n * M; | |
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539 if (*result/M != n) return false; |
| 0 | 540 return true; |
| 541 case 'K': case 'k': | |
| 542 *result = n * K; | |
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543 if (*result/K != n) return false; |
| 0 | 544 return true; |
| 545 case '\0': | |
| 546 *result = n; | |
| 547 return true; | |
| 548 default: | |
| 549 return false; | |
| 550 } | |
| 551 } | |
| 552 | |
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553 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 554 if (size < min_size) return arg_too_small; |
| 555 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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556 if (size > max_uintx) return arg_too_big; |
| 0 | 557 return arg_in_range; |
| 558 } | |
| 559 | |
| 560 // Describe an argument out of range error | |
| 561 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 562 switch(errcode) { | |
| 563 case arg_too_big: | |
| 564 jio_fprintf(defaultStream::error_stream(), | |
| 565 "The specified size exceeds the maximum " | |
| 566 "representable size.\n"); | |
| 567 break; | |
| 568 case arg_too_small: | |
| 569 case arg_unreadable: | |
| 570 case arg_in_range: | |
| 571 // do nothing for now | |
| 572 break; | |
| 573 default: | |
| 574 ShouldNotReachHere(); | |
| 575 } | |
| 576 } | |
| 577 | |
| 578 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 579 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 580 } | |
| 581 | |
| 582 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 583 double v; | |
| 584 if (sscanf(value, "%lf", &v) != 1) { | |
| 585 return false; | |
| 586 } | |
| 587 | |
| 588 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 589 return true; | |
| 590 } | |
| 591 return false; | |
| 592 } | |
| 593 | |
| 594 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
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595 julong v; |
| 0 | 596 intx intx_v; |
| 597 bool is_neg = false; | |
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598 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 599 if (*value == '-') { |
| 600 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 601 return false; | |
| 602 } | |
| 603 value++; | |
| 604 is_neg = true; | |
| 605 } | |
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606 if (!atomull(value, &v)) { |
| 0 | 607 return false; |
| 608 } | |
| 609 intx_v = (intx) v; | |
| 610 if (is_neg) { | |
| 611 intx_v = -intx_v; | |
| 612 } | |
| 613 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 614 return true; | |
| 615 } | |
| 616 uintx uintx_v = (uintx) v; | |
| 617 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 618 return true; | |
| 619 } | |
| 1064 | 620 uint64_t uint64_t_v = (uint64_t) v; |
| 621 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
| 622 return true; | |
| 623 } | |
| 0 | 624 return false; |
| 625 } | |
| 626 | |
| 627 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 628 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 629 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 630 FREE_C_HEAP_ARRAY(char, value); | |
| 631 return true; | |
| 632 } | |
| 633 | |
| 634 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 635 const char* old_value = ""; | |
| 636 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 637 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 638 size_t new_len = strlen(new_value); | |
| 639 const char* value; | |
| 640 char* free_this_too = NULL; | |
| 641 if (old_len == 0) { | |
| 642 value = new_value; | |
| 643 } else if (new_len == 0) { | |
| 644 value = old_value; | |
| 645 } else { | |
| 646 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 647 // each new setting adds another LINE to the switch: | |
| 648 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 649 value = buf; | |
| 650 free_this_too = buf; | |
| 651 } | |
| 652 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 653 // CommandLineFlags always returns a pointer that needs freeing. | |
| 654 FREE_C_HEAP_ARRAY(char, value); | |
| 655 if (free_this_too != NULL) { | |
| 656 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 657 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 658 } | |
| 659 return true; | |
| 660 } | |
| 661 | |
| 662 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 663 | |
| 664 // range of acceptable characters spelled out for portability reasons | |
| 665 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 666 #define BUFLEN 255 | |
| 667 char name[BUFLEN+1]; | |
| 668 char dummy; | |
| 669 | |
| 670 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 671 return set_bool_flag(name, false, origin); | |
| 672 } | |
| 673 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 674 return set_bool_flag(name, true, origin); | |
| 675 } | |
| 676 | |
| 677 char punct; | |
| 678 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 679 const char* value = strchr(arg, '=') + 1; | |
| 680 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 681 if (flag != NULL && flag->is_ccstr()) { | |
| 682 if (flag->ccstr_accumulates()) { | |
| 683 return append_to_string_flag(name, value, origin); | |
| 684 } else { | |
| 685 if (value[0] == '\0') { | |
| 686 value = NULL; | |
| 687 } | |
| 688 return set_string_flag(name, value, origin); | |
| 689 } | |
| 690 } | |
| 691 } | |
| 692 | |
| 693 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 694 const char* value = strchr(arg, '=') + 1; | |
| 695 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 696 if (value[0] == '\0') { | |
| 697 value = NULL; | |
| 698 } | |
| 699 return set_string_flag(name, value, origin); | |
| 700 } | |
| 701 | |
| 702 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 703 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 704 #define NUMBER_RANGE "[0123456789]" | |
| 705 char value[BUFLEN + 1]; | |
| 706 char value2[BUFLEN + 1]; | |
| 707 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 708 // Looks like a floating-point number -- try again with more lenient format string | |
| 709 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 710 return set_fp_numeric_flag(name, value, origin); | |
| 711 } | |
| 712 } | |
| 713 | |
| 714 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 715 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 716 return set_numeric_flag(name, value, origin); | |
| 717 } | |
| 718 | |
| 719 return false; | |
| 720 } | |
| 721 | |
| 722 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 723 assert(bldarray != NULL, "illegal argument"); | |
| 724 | |
| 725 if (arg == NULL) { | |
| 726 return; | |
| 727 } | |
| 728 | |
| 729 int index = *count; | |
| 730 | |
| 731 // expand the array and add arg to the last element | |
| 732 (*count)++; | |
| 733 if (*bldarray == NULL) { | |
| 734 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 735 } else { | |
| 736 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 737 } | |
| 738 (*bldarray)[index] = strdup(arg); | |
| 739 } | |
| 740 | |
| 741 void Arguments::build_jvm_args(const char* arg) { | |
| 742 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 743 } | |
| 744 | |
| 745 void Arguments::build_jvm_flags(const char* arg) { | |
| 746 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 747 } | |
| 748 | |
| 749 // utility function to return a string that concatenates all | |
| 750 // strings in a given char** array | |
| 751 const char* Arguments::build_resource_string(char** args, int count) { | |
| 752 if (args == NULL || count == 0) { | |
| 753 return NULL; | |
| 754 } | |
| 755 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 756 for (int i = 1; i < count; i++) { | |
| 757 length += strlen(args[i]) + 1; // add 1 for a space | |
| 758 } | |
| 759 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 760 strcpy(s, args[0]); | |
| 761 for (int j = 1; j < count; j++) { | |
| 762 strcat(s, " "); | |
| 763 strcat(s, args[j]); | |
| 764 } | |
| 765 return (const char*) s; | |
| 766 } | |
| 767 | |
| 768 void Arguments::print_on(outputStream* st) { | |
| 769 st->print_cr("VM Arguments:"); | |
| 770 if (num_jvm_flags() > 0) { | |
| 771 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 772 } | |
| 773 if (num_jvm_args() > 0) { | |
| 774 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 775 } | |
| 776 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 777 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 778 } | |
| 779 | |
| 780 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 781 if (_num_jvm_flags > 0) { | |
| 782 for (int i=0; i < _num_jvm_flags; i++) { | |
| 783 st->print("%s ", _jvm_flags_array[i]); | |
| 784 } | |
| 785 st->print_cr(""); | |
| 786 } | |
| 787 } | |
| 788 | |
| 789 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 790 if (_num_jvm_args > 0) { | |
| 791 for (int i=0; i < _num_jvm_args; i++) { | |
| 792 st->print("%s ", _jvm_args_array[i]); | |
| 793 } | |
| 794 st->print_cr(""); | |
| 795 } | |
| 796 } | |
| 797 | |
| 242 | 798 bool Arguments::process_argument(const char* arg, |
| 799 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 800 | |
| 801 JDK_Version since = JDK_Version(); | |
| 0 | 802 |
| 803 if (parse_argument(arg, origin)) { | |
| 804 // do nothing | |
| 242 | 805 } else if (is_newly_obsolete(arg, &since)) { |
| 806 enum { bufsize = 256 }; | |
| 807 char buffer[bufsize]; | |
| 808 since.to_string(buffer, bufsize); | |
| 0 | 809 jio_fprintf(defaultStream::error_stream(), |
| 242 | 810 "Warning: The flag %s has been EOL'd as of %s and will" |
| 811 " be ignored\n", arg, buffer); | |
| 0 | 812 } else { |
| 813 if (!ignore_unrecognized) { | |
| 814 jio_fprintf(defaultStream::error_stream(), | |
| 815 "Unrecognized VM option '%s'\n", arg); | |
| 816 // allow for commandline "commenting out" options like -XX:#+Verbose | |
| 817 if (strlen(arg) == 0 || arg[0] != '#') { | |
| 818 return false; | |
| 819 } | |
| 820 } | |
| 821 } | |
| 822 return true; | |
| 823 } | |
| 824 | |
| 825 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 826 FILE* stream = fopen(file_name, "rb"); | |
| 827 if (stream == NULL) { | |
| 828 if (should_exist) { | |
| 829 jio_fprintf(defaultStream::error_stream(), | |
| 830 "Could not open settings file %s\n", file_name); | |
| 831 return false; | |
| 832 } else { | |
| 833 return true; | |
| 834 } | |
| 835 } | |
| 836 | |
| 837 char token[1024]; | |
| 838 int pos = 0; | |
| 839 | |
| 840 bool in_white_space = true; | |
| 841 bool in_comment = false; | |
| 842 bool in_quote = false; | |
| 843 char quote_c = 0; | |
| 844 bool result = true; | |
| 845 | |
| 846 int c = getc(stream); | |
| 847 while(c != EOF) { | |
| 848 if (in_white_space) { | |
| 849 if (in_comment) { | |
| 850 if (c == '\n') in_comment = false; | |
| 851 } else { | |
| 852 if (c == '#') in_comment = true; | |
| 853 else if (!isspace(c)) { | |
| 854 in_white_space = false; | |
| 855 token[pos++] = c; | |
| 856 } | |
| 857 } | |
| 858 } else { | |
| 859 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 860 // token ends at newline, or at unquoted whitespace | |
| 861 // this allows a way to include spaces in string-valued options | |
| 862 token[pos] = '\0'; | |
| 863 logOption(token); | |
| 864 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 865 build_jvm_flags(token); | |
| 866 pos = 0; | |
| 867 in_white_space = true; | |
| 868 in_quote = false; | |
| 869 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 870 in_quote = true; | |
| 871 quote_c = c; | |
| 872 } else if (in_quote && (c == quote_c)) { | |
| 873 in_quote = false; | |
| 874 } else { | |
| 875 token[pos++] = c; | |
| 876 } | |
| 877 } | |
| 878 c = getc(stream); | |
| 879 } | |
| 880 if (pos > 0) { | |
| 881 token[pos] = '\0'; | |
| 882 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 883 build_jvm_flags(token); | |
| 884 } | |
| 885 fclose(stream); | |
| 886 return result; | |
| 887 } | |
| 888 | |
| 889 //============================================================================================================= | |
| 890 // Parsing of properties (-D) | |
| 891 | |
| 892 const char* Arguments::get_property(const char* key) { | |
| 893 return PropertyList_get_value(system_properties(), key); | |
| 894 } | |
| 895 | |
| 896 bool Arguments::add_property(const char* prop) { | |
| 897 const char* eq = strchr(prop, '='); | |
| 898 char* key; | |
| 899 // ns must be static--its address may be stored in a SystemProperty object. | |
| 900 const static char ns[1] = {0}; | |
| 901 char* value = (char *)ns; | |
| 902 | |
| 903 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 904 key = AllocateHeap(key_len + 1, "add_property"); | |
| 905 strncpy(key, prop, key_len); | |
| 906 key[key_len] = '\0'; | |
| 907 | |
| 908 if (eq != NULL) { | |
| 909 size_t value_len = strlen(prop) - key_len - 1; | |
| 910 value = AllocateHeap(value_len + 1, "add_property"); | |
| 911 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 912 } | |
| 913 | |
| 914 if (strcmp(key, "java.compiler") == 0) { | |
| 915 process_java_compiler_argument(value); | |
| 916 FreeHeap(key); | |
| 917 if (eq != NULL) { | |
| 918 FreeHeap(value); | |
| 919 } | |
| 920 return true; | |
| 691 | 921 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 922 _java_command = value; |
| 923 | |
|
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924 // Record value in Arguments, but let it get passed to Java. |
| 691 | 925 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 926 // launcher.pid property is private and is processed |
| 927 // in process_sun_java_launcher_properties(); | |
| 928 // the sun.java.launcher property is passed on to the java application | |
| 929 FreeHeap(key); | |
| 930 if (eq != NULL) { | |
| 931 FreeHeap(value); | |
| 932 } | |
| 933 return true; | |
| 691 | 934 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 935 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 936 // its value without going through the property list or making a Java call. | |
| 937 _java_vendor_url_bug = value; | |
| 691 | 938 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 939 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 940 return true; | |
| 0 | 941 } |
| 942 // Create new property and add at the end of the list | |
| 943 PropertyList_unique_add(&_system_properties, key, value); | |
| 944 return true; | |
| 945 } | |
| 946 | |
| 947 //=========================================================================================================== | |
| 948 // Setting int/mixed/comp mode flags | |
| 949 | |
| 950 void Arguments::set_mode_flags(Mode mode) { | |
| 951 // Set up default values for all flags. | |
| 952 // If you add a flag to any of the branches below, | |
| 953 // add a default value for it here. | |
| 954 set_java_compiler(false); | |
| 955 _mode = mode; | |
| 956 | |
| 957 // Ensure Agent_OnLoad has the correct initial values. | |
| 958 // This may not be the final mode; mode may change later in onload phase. | |
| 959 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
| 691 | 960 (char*)Abstract_VM_Version::vm_info_string(), false); |
| 0 | 961 |
| 962 UseInterpreter = true; | |
| 963 UseCompiler = true; | |
| 964 UseLoopCounter = true; | |
| 965 | |
|
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966 #ifndef ZERO |
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967 // Turn these off for mixed and comp. Leave them on for Zero. |
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968 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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969 UseFastAccessorMethods = mode == _int; |
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970 } |
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971 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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972 UseFastEmptyMethods = mode == _int; |
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973 } |
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974 #endif |
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975 |
| 0 | 976 // Default values may be platform/compiler dependent - |
| 977 // use the saved values | |
| 978 ClipInlining = Arguments::_ClipInlining; | |
| 979 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 980 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 981 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 982 | |
| 983 // Change from defaults based on mode | |
| 984 switch (mode) { | |
| 985 default: | |
| 986 ShouldNotReachHere(); | |
| 987 break; | |
| 988 case _int: | |
| 989 UseCompiler = false; | |
| 990 UseLoopCounter = false; | |
| 991 AlwaysCompileLoopMethods = false; | |
| 992 UseOnStackReplacement = false; | |
| 993 break; | |
| 994 case _mixed: | |
| 995 // same as default | |
| 996 break; | |
| 997 case _comp: | |
| 998 UseInterpreter = false; | |
| 999 BackgroundCompilation = false; | |
| 1000 ClipInlining = false; | |
| 1001 break; | |
| 1002 } | |
| 1003 } | |
| 1004 | |
| 1005 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 1006 // incompatible command line options were chosen. | |
| 1007 | |
| 1008 static void no_shared_spaces() { | |
| 1009 if (RequireSharedSpaces) { | |
| 1010 jio_fprintf(defaultStream::error_stream(), | |
| 1011 "Class data sharing is inconsistent with other specified options.\n"); | |
| 1012 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 1013 } else { | |
| 1014 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 1015 } | |
| 1016 } | |
| 1017 | |
| 1783 | 1018 void Arguments::set_tiered_flags() { |
|
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1019 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
| 1783 | 1020 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
|
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1021 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
| 1783 | 1022 } |
| 1023 if (CompilationPolicyChoice < 2) { | |
| 1024 vm_exit_during_initialization( | |
| 1025 "Incompatible compilation policy selected", NULL); | |
| 1026 } | |
|
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1027 // Increase the code cache size - tiered compiles a lot more. |
| 1783 | 1028 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
| 1029 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
| 1030 } | |
| 1031 } | |
| 1032 | |
|
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1033 #ifndef KERNEL |
| 0 | 1034 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
| 1035 // if it's not explictly set or unset. If the user has chosen | |
| 1036 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 1037 // set it, unless this is a single cpu machine. | |
| 1038 void Arguments::set_parnew_gc_flags() { | |
| 1064 | 1039 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
|
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1040 "control point invariant"); |
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1041 assert(UseParNewGC, "Error"); |
| 0 | 1042 |
|
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1043 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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1044 // complete. |
|
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1045 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
|
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1046 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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1047 } |
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1048 |
|
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1049 if (ParallelGCThreads == 0) { |
|
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1050 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1051 Abstract_VM_Version::parallel_worker_threads()); |
| 1064 | 1052 if (ParallelGCThreads == 1) { |
| 0 | 1053 FLAG_SET_DEFAULT(UseParNewGC, false); |
| 1064 | 1054 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
| 0 | 1055 } |
| 1056 } | |
| 1064 | 1057 if (UseParNewGC) { |
| 1058 // CDS doesn't work with ParNew yet | |
| 0 | 1059 no_shared_spaces(); |
| 1060 | |
| 695 | 1061 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
| 0 | 1062 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
| 1063 // we set them to 1024 and 1024. | |
| 1064 // See CR 6362902. | |
| 1065 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 1066 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 1067 } | |
| 1068 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1069 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 1070 } | |
| 1071 | |
| 1064 | 1072 // AlwaysTenure flag should make ParNew promote all at first collection. |
| 0 | 1073 // See CR 6362902. |
| 1074 if (AlwaysTenure) { | |
| 1075 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 1076 } | |
| 695 | 1077 // When using compressed oops, we use local overflow stacks, |
| 1078 // rather than using a global overflow list chained through | |
| 1079 // the klass word of the object's pre-image. | |
| 1080 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
| 1081 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
| 1082 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
| 1083 } | |
| 1084 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
| 1085 } | |
| 1086 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
| 0 | 1087 } |
| 1088 } | |
| 1089 | |
| 1090 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1091 // sparc/solaris for certain applications, but would gain from | |
| 1092 // further optimization and tuning efforts, and would almost | |
| 1093 // certainly gain from analysis of platform and environment. | |
| 1094 void Arguments::set_cms_and_parnew_gc_flags() { | |
| 1064 | 1095 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
|
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1096 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1097 |
| 0 | 1098 // If we are using CMS, we prefer to UseParNewGC, |
| 1099 // unless explicitly forbidden. | |
|
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1100 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
|
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1101 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1102 } |
| 1103 | |
| 1104 // Turn off AdaptiveSizePolicy by default for cms until it is | |
|
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1105 // complete. |
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1106 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
| 0 | 1107 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
| 1108 } | |
| 1109 | |
| 1110 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1111 // as needed. | |
|
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1112 if (UseParNewGC) { |
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1113 set_parnew_gc_flags(); |
| 0 | 1114 } |
| 1115 | |
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1116 // MaxHeapSize is aligned down in collectorPolicy |
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1117 size_t max_heap = align_size_down(MaxHeapSize, |
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1118 CardTableRS::ct_max_alignment_constraint()); |
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1119 |
| 0 | 1120 // Now make adjustments for CMS |
|
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1121 intx tenuring_default = (intx)6; |
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1122 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1123 |
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1124 // Preferred young gen size for "short" pauses: |
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1125 // upper bound depends on # of threads and NewRatio. |
| 0 | 1126 const uintx parallel_gc_threads = |
| 1127 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1128 const size_t preferred_max_new_size_unaligned = | |
|
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1129 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1130 size_t preferred_max_new_size = |
| 0 | 1131 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
| 1132 | |
| 1133 // Unless explicitly requested otherwise, size young gen | |
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1134 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
|
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1135 |
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1136 // If either MaxNewSize or NewRatio is set on the command line, |
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1137 // assume the user is trying to set the size of the young gen. |
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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("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
|
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1151 } |
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1152 |
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1153 // Code along this path potentially sets NewSize and OldSize |
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1154 |
|
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1155 assert(max_heap >= InitialHeapSize, "Error"); |
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1156 assert(max_heap >= NewSize, "Error"); |
| 0 | 1157 |
| 1064 | 1158 if (PrintGCDetails && Verbose) { |
|
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1159 // Too early to use gclog_or_tty |
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1160 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
|
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1161 " initial_heap_size: " SIZE_FORMAT |
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1162 " max_heap: " SIZE_FORMAT, |
| 1064 | 1163 min_heap_size(), InitialHeapSize, max_heap); |
|
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1164 } |
|
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1165 size_t min_new = preferred_max_new_size; |
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1166 if (FLAG_IS_CMDLINE(NewSize)) { |
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1167 min_new = NewSize; |
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1168 } |
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1169 if (max_heap > min_new && min_heap_size() > min_new) { |
| 0 | 1170 // Unless explicitly requested otherwise, make young gen |
| 1171 // at least min_new, and at most preferred_max_new_size. | |
| 1172 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
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1173 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1174 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
| 1064 | 1175 if (PrintGCDetails && Verbose) { |
|
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1176 // Too early to use gclog_or_tty |
|
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1177 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
|
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1178 } |
| 0 | 1179 } |
| 1180 // Unless explicitly requested otherwise, size old gen | |
|
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1181 // so it's NewRatio x of NewSize. |
| 0 | 1182 if (FLAG_IS_DEFAULT(OldSize)) { |
| 1183 if (max_heap > NewSize) { | |
|
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1184 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
| 1064 | 1185 if (PrintGCDetails && Verbose) { |
|
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1186 // Too early to use gclog_or_tty |
|
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1187 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
|
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1188 } |
| 0 | 1189 } |
| 1190 } | |
| 1191 } | |
| 1192 } | |
| 1193 // Unless explicitly requested otherwise, definitely | |
| 1194 // promote all objects surviving "tenuring_default" scavenges. | |
| 1195 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1196 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
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1197 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1198 } |
| 1199 // If we decided above (or user explicitly requested) | |
| 1200 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1201 // prefer minuscule survivor spaces so as not to waste | |
| 1202 // space for (non-existent) survivors | |
| 1203 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
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1204 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1205 } |
| 1206 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1207 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1208 // This is done in order to make ParNew+CMS configuration to work | |
| 1209 // with YoungPLABSize and OldPLABSize options. | |
| 1210 // See CR 6362902. | |
| 1211 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1212 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
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1213 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
|
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1214 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
|
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1215 // the value (either from the command line or ergonomics) of |
|
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1216 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
|
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1217 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
|
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|
1218 } else { |
| 0 | 1219 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
| 1220 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1221 // we'll let it to take precedence. | |
| 1222 jio_fprintf(defaultStream::error_stream(), | |
|
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|
1223 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1224 " options are specified for the CMS collector." |
|
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1225 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
| 0 | 1226 } |
| 1227 } | |
|
1145
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|
1228 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
|
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|
1229 // OldPLAB sizing manually turned off: Use a larger default setting, |
|
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1230 // unless it was manually specified. This is because a too-low value |
|
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|
1231 // will slow down scavenges. |
|
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|
1232 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
|
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|
1233 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
|
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|
1234 } |
|
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|
1235 } |
|
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|
1236 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
|
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|
1237 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
|
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|
1238 // If either of the static initialization defaults have changed, note this |
|
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|
1239 // modification. |
|
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|
1240 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
|
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|
1241 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
|
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|
1242 } |
| 1284 | 1243 if (PrintGCDetails && Verbose) { |
| 1244 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1245 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1246 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1247 } | |
| 0 | 1248 } |
|
1145
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|
1249 #endif // KERNEL |
| 0 | 1250 |
|
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|
1251 void set_object_alignment() { |
|
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|
1252 // Object alignment. |
|
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|
1253 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
|
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|
1254 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
|
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|
1255 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
|
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|
1256 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
|
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|
1257 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
|
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|
1258 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
|
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|
1259 |
|
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|
1260 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
|
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|
1261 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
|
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|
1262 |
|
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|
1263 // Oop encoding heap max |
|
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|
1264 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
|
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|
1265 |
|
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|
1266 #ifndef KERNEL |
|
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|
1267 // Set CMS global values |
|
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|
1268 CompactibleFreeListSpace::set_cms_values(); |
|
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|
1269 #endif // KERNEL |
|
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|
1270 } |
|
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|
1271 |
|
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|
1272 bool verify_object_alignment() { |
|
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|
1273 // Object alignment. |
|
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|
1274 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
|
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|
1275 jio_fprintf(defaultStream::error_stream(), |
|
1829
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|
1276 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
|
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|
1277 (int)ObjectAlignmentInBytes); |
|
1571
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|
1278 return false; |
|
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|
1279 } |
|
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|
1280 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
|
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|
1281 jio_fprintf(defaultStream::error_stream(), |
|
1829
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|
1282 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
|
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|
1283 (int)ObjectAlignmentInBytes, BytesPerLong); |
|
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|
1284 return false; |
|
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|
1285 } |
|
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|
1286 // It does not make sense to have big object alignment |
|
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|
1287 // since a space lost due to alignment will be greater |
|
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|
1288 // then a saved space from compressed oops. |
|
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|
1289 if ((int)ObjectAlignmentInBytes > 256) { |
|
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1290 jio_fprintf(defaultStream::error_stream(), |
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1291 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1292 (int)ObjectAlignmentInBytes); |
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1293 return false; |
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1294 } |
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1295 // In case page size is very small. |
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1296 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1297 jio_fprintf(defaultStream::error_stream(), |
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1298 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1299 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
|
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1300 return false; |
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1301 } |
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1302 return true; |
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1303 } |
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1304 |
|
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1305 inline uintx max_heap_for_compressed_oops() { |
| 1963 | 1306 // Avoid sign flip. |
| 1307 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | |
| 1308 return 0; | |
| 1309 } | |
| 1310 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | |
| 1064 | 1311 NOT_LP64(ShouldNotReachHere(); return 0); |
|
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1312 } |
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1313 |
| 0 | 1314 bool Arguments::should_auto_select_low_pause_collector() { |
| 1315 if (UseAutoGCSelectPolicy && | |
| 1316 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1317 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1318 if (PrintGCDetails) { | |
| 1319 // Cannot use gclog_or_tty yet. | |
| 1320 tty->print_cr("Automatic selection of the low pause collector" | |
| 1321 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1322 } | |
| 1323 return true; | |
| 1324 } | |
| 1325 return false; | |
| 1326 } | |
| 1327 | |
| 1328 void Arguments::set_ergonomics_flags() { | |
| 1329 // Parallel GC is not compatible with sharing. If one specifies | |
| 1064 | 1330 // that they want sharing explicitly, do not set ergonomics flags. |
|
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1331 if (DumpSharedSpaces || RequireSharedSpaces) { |
| 0 | 1332 return; |
| 1333 } | |
| 1334 | |
| 1335 if (os::is_server_class_machine() && !force_client_mode ) { | |
| 1336 // If no other collector is requested explicitly, | |
| 1337 // let the VM select the collector based on | |
| 1338 // machine class and automatic selection policy. | |
| 1339 if (!UseSerialGC && | |
| 1340 !UseConcMarkSweepGC && | |
|
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1341 !UseG1GC && |
| 0 | 1342 !UseParNewGC && |
| 1343 !DumpSharedSpaces && | |
| 1344 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1345 if (should_auto_select_low_pause_collector()) { | |
| 1346 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1347 } else { | |
| 1348 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1349 } | |
| 1350 no_shared_spaces(); | |
| 1351 } | |
| 1352 } | |
|
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1353 |
| 1010 | 1354 #ifndef ZERO |
|
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1355 #ifdef _LP64 |
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1356 // Check that UseCompressedOops can be set with the max heap size allocated |
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1357 // by ergonomics. |
| 187 | 1358 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 1783 | 1359 #if !defined(COMPILER1) || defined(TIERED) |
| 2228 | 1360 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 932 | 1361 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
|
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1362 } |
| 1060 | 1363 #endif |
|
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1364 #ifdef _WIN64 |
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1365 if (UseLargePages && UseCompressedOops) { |
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1366 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1367 // mode, when large pages are specified on windows. |
|
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1368 // This flag could be switched ON if narrow oop base address is set to 0, |
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1369 // see code in Universe::initialize_heap(). |
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1370 Universe::set_narrow_oop_use_implicit_null_checks(false); |
|
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1371 } |
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1372 #endif // _WIN64 |
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1373 } else { |
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1374 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1375 warning("Max heap size too large for Compressed Oops"); |
|
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1376 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1377 } |
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1378 } |
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1379 // Also checks that certain machines are slower with compressed oops |
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1380 // in vm_version initialization code. |
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1381 #endif // _LP64 |
| 1010 | 1382 #endif // !ZERO |
| 0 | 1383 } |
| 1384 | |
| 1385 void Arguments::set_parallel_gc_flags() { | |
|
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1386 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 0 | 1387 // If parallel old was requested, automatically enable parallel scavenge. |
| 1388 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1389 FLAG_SET_DEFAULT(UseParallelGC, true); | |
| 1390 } | |
| 1391 | |
| 1392 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1393 // of the physical memory, up to a maximum of 1GB. | |
| 1394 if (UseParallelGC) { | |
|
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1395 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
|
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1396 Abstract_VM_Version::parallel_worker_threads()); |
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1397 |
| 0 | 1398 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1399 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1400 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1401 // See CR 6362902 for details. | |
| 1402 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1403 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1404 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1405 } | |
| 1406 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1407 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1408 } | |
| 1409 } | |
| 1410 | |
| 1411 if (UseParallelOldGC) { | |
| 1412 // Par compact uses lower default values since they are treated as | |
|
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1413 // minimums. These are different defaults because of the different |
|
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1414 // interpretation and are not ergonomically set. |
| 0 | 1415 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
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1416 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1417 } |
| 1418 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
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1419 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1420 } |
| 1421 } | |
| 1422 } | |
| 1423 } | |
| 1424 | |
|
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1425 void Arguments::set_g1_gc_flags() { |
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1426 assert(UseG1GC, "Error"); |
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1427 #ifdef COMPILER1 |
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1428 FastTLABRefill = false; |
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1429 #endif |
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1430 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1431 Abstract_VM_Version::parallel_worker_threads()); |
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1432 if (ParallelGCThreads == 0) { |
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1433 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1434 Abstract_VM_Version::parallel_worker_threads()); |
|
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1435 } |
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1436 no_shared_spaces(); |
| 751 | 1437 |
| 1284 | 1438 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
|
1311
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1439 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
| 1284 | 1440 } |
| 1441 if (PrintGCDetails && Verbose) { | |
| 1442 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1443 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1444 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1445 } | |
| 1356 | 1446 |
| 1447 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
| 1448 // In G1, we want the default GC overhead goal to be higher than | |
| 1449 // say in PS. So we set it here to 10%. Otherwise the heap might | |
| 1450 // be expanded more aggressively than we would like it to. In | |
| 1451 // fact, even 10% seems to not be high enough in some cases | |
| 1452 // (especially small GC stress tests that the main thing they do | |
| 1453 // is allocation). We might consider increase it further. | |
| 1454 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
| 1455 } | |
|
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1456 } |
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1457 |
| 1064 | 1458 void Arguments::set_heap_size() { |
| 1459 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
| 1460 // Deprecated flag | |
| 1461 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
| 1462 } | |
| 1463 | |
| 1464 const julong phys_mem = | |
| 1465 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
| 1466 : (julong)MaxRAM; | |
| 1467 | |
| 1468 // If the maximum heap size has not been set with -Xmx, | |
| 1469 // then set it as fraction of the size of physical memory, | |
| 1470 // respecting the maximum and minimum sizes of the heap. | |
|
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1471 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
| 1064 | 1472 julong reasonable_max = phys_mem / MaxRAMFraction; |
| 1473 | |
| 1474 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
| 1475 // Small physical memory, so use a minimum fraction of it for the heap | |
| 1476 reasonable_max = phys_mem / MinRAMFraction; | |
| 1477 } else { | |
| 1478 // Not-small physical memory, so require a heap at least | |
| 1479 // as large as MaxHeapSize | |
| 1480 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
| 1481 } | |
| 1482 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
| 1483 // Limit the heap size to ErgoHeapSizeLimit | |
| 1484 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
|
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1485 } |
| 1064 | 1486 if (UseCompressedOops) { |
| 1487 // Limit the heap size to the maximum possible when using compressed oops | |
| 1963 | 1488 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
| 1489 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
| 1490 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
| 1491 // but it should be not less than default MaxHeapSize. | |
| 1492 max_coop_heap -= HeapBaseMinAddress; | |
| 1493 } | |
| 1494 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
| 1064 | 1495 } |
| 1496 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
| 1497 | |
| 1498 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
| 1499 // An initial heap size was specified on the command line, | |
| 1500 // so be sure that the maximum size is consistent. Done | |
| 1501 // after call to allocatable_physical_memory because that | |
| 1502 // method might reduce the allocation size. | |
| 1503 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
| 1504 } | |
| 1505 | |
|
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1506 if (PrintGCDetails && Verbose) { |
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1507 // Cannot use gclog_or_tty yet. |
| 1064 | 1508 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
|
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1509 } |
| 1064 | 1510 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
| 1511 } | |
| 1512 | |
| 1513 // If the initial_heap_size has not been set with InitialHeapSize | |
| 1514 // or -Xms, then set it as fraction of the size of physical memory, | |
| 1515 // respecting the maximum and minimum sizes of the heap. | |
| 1516 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
|
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1517 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1518 |
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1519 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1520 |
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1521 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1522 |
| 1064 | 1523 julong reasonable_initial = phys_mem / InitialRAMFraction; |
| 1524 | |
|
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1525 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
| 1064 | 1526 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
| 1527 | |
| 1528 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
| 1529 | |
| 1530 if (PrintGCDetails && Verbose) { | |
| 1531 // Cannot use gclog_or_tty yet. | |
| 1532 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
|
1533 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
|
1534 } |
| 1064 | 1535 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
|
1536 set_min_heap_size((uintx)reasonable_minimum); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1537 } |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1538 } |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1539 |
| 0 | 1540 // This must be called after ergonomics because we want bytecode rewriting |
| 1541 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1542 void Arguments::set_bytecode_flags() { | |
| 1543 // Better not attempt to store into a read-only space. | |
| 1544 if (UseSharedSpaces) { | |
| 1545 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1546 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1547 } | |
| 1548 | |
| 1549 if (!RewriteBytecodes) { | |
| 1550 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1551 } | |
| 1552 } | |
| 1553 | |
| 1554 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1555 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
|
1556 #ifdef COMPILER2 |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1557 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
|
1558 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1559 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1560 } |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1561 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1562 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1563 } |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1564 |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1565 // 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
|
1566 char buffer[1024]; |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1567 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
|
1568 add_property(buffer); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1569 } |
| 65 | 1570 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
| 1571 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
| 1572 } | |
|
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1573 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1574 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1575 } |
| 1622 | 1576 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeStringConcat)) { |
| 1577 FLAG_SET_DEFAULT(OptimizeStringConcat, true); | |
| 1578 } | |
| 1763 | 1579 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeFill)) { |
| 1580 FLAG_SET_DEFAULT(OptimizeFill, true); | |
| 1581 } | |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1582 #endif |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1583 |
| 0 | 1584 if (AggressiveOpts) { |
| 61 | 1585 // Sample flag setting code |
| 1586 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1587 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1588 // } | |
| 0 | 1589 } |
| 1590 } | |
| 1591 | |
| 1592 //=========================================================================================================== | |
| 1593 // Parsing of java.compiler property | |
| 1594 | |
| 1595 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1596 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1597 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1598 // is also specified. | |
| 1599 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1600 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1601 } | |
| 1602 } | |
| 1603 | |
| 1604 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1605 _sun_java_launcher = strdup(launcher); | |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1606 if (strcmp("gamma", _sun_java_launcher) == 0) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1607 _created_by_gamma_launcher = true; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1608 } |
| 0 | 1609 } |
| 1610 | |
| 1611 bool Arguments::created_by_java_launcher() { | |
| 1612 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1613 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1614 } | |
| 1615 | |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1616 bool Arguments::created_by_gamma_launcher() { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1617 return _created_by_gamma_launcher; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1618 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
1619 |
| 0 | 1620 //=========================================================================================================== |
| 1621 // Parsing of main arguments | |
| 1622 | |
|
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1623 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
|
1624 uintx max, const char* name) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1625 // 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
|
1626 // false, otherwise. |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1627 if (val >= min && val <= max) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1628 return true; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1629 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1630 jio_fprintf(defaultStream::error_stream(), |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1631 "%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
|
1632 " and " UINTX_FORMAT "\n", |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1633 name, val, min, max); |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1634 return false; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1635 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1636 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1637 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
|
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1638 // Returns true if given value is at least specified min threshold |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1639 // false, otherwise. |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1640 if (val >= min ) { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1641 return true; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1642 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1643 jio_fprintf(defaultStream::error_stream(), |
|
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1644 "%s of " INTX_FORMAT " is invalid; must be at least " INTX_FORMAT "\n", |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1645 name, val, min); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1646 return false; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1647 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1648 |
| 0 | 1649 bool Arguments::verify_percentage(uintx value, const char* name) { |
| 1650 if (value <= 100) { | |
| 1651 return true; | |
| 1652 } | |
| 1653 jio_fprintf(defaultStream::error_stream(), | |
| 1654 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1655 name, value); | |
| 1656 return false; | |
| 1657 } | |
| 1658 | |
| 1064 | 1659 static void force_serial_gc() { |
| 0 | 1660 FLAG_SET_DEFAULT(UseSerialGC, true); |
| 1661 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1662 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
|
1663 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
| 0 | 1664 FLAG_SET_DEFAULT(UseParallelGC, false); |
| 1665 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1666 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1667 } |
| 1668 | |
| 1669 static bool verify_serial_gc_flags() { | |
| 1670 return (UseSerialGC && | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1671 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1672 UseParallelGC || UseParallelOldGC)); |
| 0 | 1673 } |
| 1674 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1675 // Check consistency of GC selection |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1676 bool Arguments::check_gc_consistency() { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1677 bool status = true; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1678 // 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
|
1679 // 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
|
1680 // 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
|
1681 // 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
|
1682 // 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
|
1683 // 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
|
1684 // select conflicting combinations. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1685 uint i = 0; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1686 if (UseSerialGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1687 if (UseConcMarkSweepGC || UseParNewGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1688 if (UseParallelGC || UseParallelOldGC) i++; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1689 if (UseG1GC) i++; |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1690 if (i > 1) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1691 jio_fprintf(defaultStream::error_stream(), |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1692 "Conflicting collector combinations in option list; " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1693 "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
|
1694 "allowed\n"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1695 status = false; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1696 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1697 |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1698 return status; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1699 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1700 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1701 // Check stack pages settings |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1702 bool Arguments::check_stack_pages() |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1703 { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1704 bool status = true; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1705 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1706 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
|
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1864
diff
changeset
|
1707 // greater stack shadow pages can't generate instruction to bang stack |
|
b6aedd1acdc0
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1864
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|
1708 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
|
1744
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1709 return status; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
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|
1710 } |
|
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1711 |
| 0 | 1712 // Check the consistency of vm_init_args |
| 1713 bool Arguments::check_vm_args_consistency() { | |
| 1714 // Method for adding checks for flag consistency. | |
| 1715 // The intent is to warn the user of all possible conflicts, | |
| 1716 // before returning an error. | |
| 1717 // Note: Needs platform-dependent factoring. | |
| 1718 bool status = true; | |
| 1719 | |
| 1720 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1721 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1722 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1723 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1724 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1725 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1726 extern void VM_Version_init(); | |
| 1727 VM_Version_init(); | |
| 1728 if (!VM_Version::has_v9()) { | |
| 1729 jio_fprintf(defaultStream::error_stream(), | |
| 1730 "V8 Machine detected, Server requires V9\n"); | |
| 1731 status = false; | |
| 1732 } | |
| 1733 #endif /* COMPILER2 && SPARC */ | |
| 1734 | |
| 1735 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1736 // builds so the cost of stack banging can be measured. | |
| 1737 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1738 if (!UseBoundThreads && !UseStackBanging) { | |
| 1739 jio_fprintf(defaultStream::error_stream(), | |
| 1740 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1741 | |
| 1742 status = false; | |
| 1743 } | |
| 1744 #endif | |
| 1745 | |
| 1746 if (TLABRefillWasteFraction == 0) { | |
| 1747 jio_fprintf(defaultStream::error_stream(), | |
| 1748 "TLABRefillWasteFraction should be a denominator, " | |
| 1749 "not " SIZE_FORMAT "\n", | |
| 1750 TLABRefillWasteFraction); | |
| 1751 status = false; | |
| 1752 } | |
| 1753 | |
|
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diff
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|
1754 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1755 "AdaptiveSizePolicyWeight"); |
|
10
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diff
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|
1756 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
|
28372612af5e
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diff
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|
1757 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
|
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diff
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|
1758 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
|
28372612af5e
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diff
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|
1759 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1760 |
| 1761 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1762 jio_fprintf(defaultStream::error_stream(), | |
| 1763 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1764 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1765 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1766 status = false; | |
| 1767 } | |
| 1768 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1769 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1770 | |
| 1771 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1772 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1773 } | |
| 1774 | |
|
483
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|
1775 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
|
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|
1776 // Settings to encourage splitting. |
|
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|
1777 if (!FLAG_IS_CMDLINE(NewRatio)) { |
|
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|
1778 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
|
0f773163217d
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|
1779 } |
|
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|
1780 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
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|
1781 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
|
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|
1782 } |
|
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|
1783 } |
|
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|
1784 |
|
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|
1785 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
|
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diff
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|
1786 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1787 if (GCTimeLimit == 100) { |
| 1788 // Turn off gc-overhead-limit-exceeded checks | |
| 1789 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1790 } | |
| 1791 | |
|
10
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|
1792 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1793 |
|
10
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|
1794 status = status && check_gc_consistency(); |
|
1744
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|
1795 status = status && check_stack_pages(); |
| 0 | 1796 |
| 1797 if (_has_alloc_profile) { | |
| 1798 if (UseParallelGC || UseParallelOldGC) { | |
| 1799 jio_fprintf(defaultStream::error_stream(), | |
| 1800 "error: invalid argument combination.\n" | |
| 1801 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1802 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1803 status = false; | |
| 1804 } | |
| 1805 if (UseConcMarkSweepGC) { | |
| 1806 jio_fprintf(defaultStream::error_stream(), | |
| 1807 "error: invalid argument combination.\n" | |
| 1808 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1809 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1810 status = false; | |
| 1811 } | |
| 1812 } | |
| 1813 | |
| 1814 if (CMSIncrementalMode) { | |
| 1815 if (!UseConcMarkSweepGC) { | |
| 1816 jio_fprintf(defaultStream::error_stream(), | |
| 1817 "error: invalid argument combination.\n" | |
| 1818 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1819 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1820 status = false; | |
| 1821 } else { | |
|
10
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|
1822 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1823 "CMSIncrementalDutyCycle"); |
|
10
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|
1824 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1825 "CMSIncrementalDutyCycleMin"); |
|
10
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|
1826 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1827 "CMSIncrementalSafetyFactor"); |
|
10
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|
1828 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1829 "CMSIncrementalOffset"); |
|
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|
1830 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1831 "CMSExpAvgFactor"); |
| 1832 // If it was not set on the command line, set | |
| 1833 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1834 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1835 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1836 } | |
| 1837 } | |
| 1838 } | |
| 1839 | |
| 1840 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1841 // insists that we hold the requisite locks so that the iteration is | |
| 1842 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1843 // yet have a good way of acquiring and releasing these locks, | |
| 1844 // which are not visible at the CollectedHeap level. We want to | |
| 1845 // be able to acquire these locks and then do the iteration rather | |
| 1846 // than just disable the lock verification. This will be fixed under | |
| 1847 // bug 4788986. | |
| 1848 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1849 if (VerifyGCStartAt == 0) { | |
| 1850 warning("Heap verification at start-up disabled " | |
| 1851 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1852 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1853 } | |
| 1854 if (VerifyBeforeExit) { | |
| 1855 warning("Heap verification at shutdown disabled " | |
| 1856 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1857 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1858 } | |
| 1859 } | |
| 1860 | |
| 1861 // Note: only executed in non-PRODUCT mode | |
| 1862 if (!UseAsyncConcMarkSweepGC && | |
| 1863 (ExplicitGCInvokesConcurrent || | |
| 1864 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1865 jio_fprintf(defaultStream::error_stream(), | |
| 1866 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1867 " with -UseAsyncConcMarkSweepGC"); | |
| 1868 status = false; | |
| 1869 } | |
| 1870 | |
|
2366
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|
1871 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
|
1fb790245268
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|
1872 |
|
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|
1873 #ifndef SERIALGC |
|
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|
1874 if (UseG1GC) { |
|
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|
1875 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
|
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|
1876 "InitiatingHeapOccupancyPercent"); |
|
2174
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|
1877 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
|
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|
1878 "G1RefProcDrainInterval"); |
|
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|
1879 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
|
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|
1880 "G1ConcMarkStepDurationMillis"); |
|
1283
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|
1881 } |
|
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|
1882 #endif |
|
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|
1883 |
|
1244
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|
1884 status = status && verify_interval(RefDiscoveryPolicy, |
|
745c853ee57f
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|
1885 ReferenceProcessor::DiscoveryPolicyMin, |
|
745c853ee57f
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diff
changeset
|
1886 ReferenceProcessor::DiscoveryPolicyMax, |
|
745c853ee57f
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|
1887 "RefDiscoveryPolicy"); |
|
745c853ee57f
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|
1888 |
|
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|
1889 // Limit the lower bound of this flag to 1 as it is used in a division |
|
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|
1890 // expression. |
|
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|
1891 status = status && verify_interval(TLABWasteTargetPercent, |
|
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|
1892 1, 100, "TLABWasteTargetPercent"); |
|
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|
1893 |
|
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|
1894 status = status && verify_object_alignment(); |
|
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|
1895 |
| 0 | 1896 return status; |
| 1897 } | |
| 1898 | |
| 1899 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1900 const char* option_type) { | |
| 1901 if (ignore) return false; | |
| 1902 | |
| 1903 const char* spacer = " "; | |
| 1904 if (option_type == NULL) { | |
| 1905 option_type = ++spacer; // Set both to the empty string. | |
| 1906 } | |
| 1907 | |
| 1908 if (os::obsolete_option(option)) { | |
| 1909 jio_fprintf(defaultStream::error_stream(), | |
| 1910 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1911 option->optionString); | |
| 1912 return false; | |
| 1913 } else { | |
| 1914 jio_fprintf(defaultStream::error_stream(), | |
| 1915 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 1916 option->optionString); | |
| 1917 return true; | |
| 1918 } | |
| 1919 } | |
| 1920 | |
| 1921 static const char* user_assertion_options[] = { | |
| 1922 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 1923 }; | |
| 1924 | |
| 1925 static const char* system_assertion_options[] = { | |
| 1926 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 1927 }; | |
| 1928 | |
| 1929 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 1930 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 1931 // the option must match exactly. | |
| 1932 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 1933 bool tail_allowed) { | |
| 1934 for (/* empty */; *names != NULL; ++names) { | |
| 1935 if (match_option(option, *names, tail)) { | |
| 1936 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 1937 return true; | |
| 1938 } | |
| 1939 } | |
| 1940 } | |
| 1941 return false; | |
| 1942 } | |
| 1943 | |
| 1284 | 1944 bool Arguments::parse_uintx(const char* value, |
| 1945 uintx* uintx_arg, | |
| 1946 uintx min_size) { | |
| 1947 | |
| 1948 // Check the sign first since atomull() parses only unsigned values. | |
| 1949 bool value_is_positive = !(*value == '-'); | |
| 1950 | |
| 1951 if (value_is_positive) { | |
| 1952 julong n; | |
| 1953 bool good_return = atomull(value, &n); | |
| 1954 if (good_return) { | |
| 1955 bool above_minimum = n >= min_size; | |
| 1956 bool value_is_too_large = n > max_uintx; | |
| 1957 | |
| 1958 if (above_minimum && !value_is_too_large) { | |
| 1959 *uintx_arg = n; | |
| 1960 return true; | |
| 1961 } | |
| 1962 } | |
| 1963 } | |
| 1964 return false; | |
| 1965 } | |
| 1966 | |
| 0 | 1967 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
|
489
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1968 julong* long_arg, |
|
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1969 julong min_size) { |
|
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|
1970 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 1971 return check_memory_size(*long_arg, min_size); |
| 1972 } | |
| 1973 | |
| 1974 // Parse JavaVMInitArgs structure | |
| 1975 | |
| 1976 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 1977 // For components of the system classpath. | |
| 1978 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 1979 bool scp_assembly_required = false; | |
| 1980 | |
| 1981 // Save default settings for some mode flags | |
| 1982 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 1983 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 1984 Arguments::_ClipInlining = ClipInlining; | |
| 1985 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 1986 | |
| 1987 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
| 1988 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 1989 if (result != JNI_OK) { | |
| 1990 return result; | |
| 1991 } | |
| 1992 | |
| 1993 // Parse JavaVMInitArgs structure passed in | |
| 1994 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 1995 if (result != JNI_OK) { | |
| 1996 return result; | |
| 1997 } | |
| 1998 | |
|
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|
1999 if (AggressiveOpts) { |
|
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|
2000 // Insert alt-rt.jar between user-specified bootclasspath |
|
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diff
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|
2001 // prefix and the default bootclasspath. os::set_boot_path() |
|
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|
2002 // uses meta_index_dir as the default bootclasspath directory. |
|
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|
2003 const char* altclasses_jar = "alt-rt.jar"; |
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2004 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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2005 strlen(altclasses_jar); |
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2006 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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2007 strcpy(altclasses_path, get_meta_index_dir()); |
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2008 strcat(altclasses_path, altclasses_jar); |
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2009 scp.add_suffix_to_prefix(altclasses_path); |
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2010 scp_assembly_required = true; |
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2011 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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2012 } |
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2013 |
| 0 | 2014 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 2015 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 2016 if (result != JNI_OK) { | |
| 2017 return result; | |
| 2018 } | |
| 2019 | |
| 2020 // Do final processing now that all arguments have been parsed | |
| 2021 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 2022 if (result != JNI_OK) { | |
| 2023 return result; | |
| 2024 } | |
| 2025 | |
| 2026 return JNI_OK; | |
| 2027 } | |
| 2028 | |
| 2029 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 2030 SysClassPath* scp_p, | |
| 2031 bool* scp_assembly_required_p, | |
| 2032 FlagValueOrigin origin) { | |
| 2033 // Remaining part of option string | |
| 2034 const char* tail; | |
| 2035 | |
| 2036 // iterate over arguments | |
| 2037 for (int index = 0; index < args->nOptions; index++) { | |
| 2038 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 2039 | |
| 2040 const JavaVMOption* option = args->options + index; | |
| 2041 | |
| 2042 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 2043 !match_option(option, "-Dsun.java.command", &tail) && | |
| 2044 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 2045 | |
| 2046 // add all jvm options to the jvm_args string. This string | |
| 2047 // is used later to set the java.vm.args PerfData string constant. | |
| 2048 // the -Djava.class.path and the -Dsun.java.command options are | |
| 2049 // omitted from jvm_args string as each have their own PerfData | |
| 2050 // string constant object. | |
| 2051 build_jvm_args(option->optionString); | |
| 2052 } | |
| 2053 | |
| 2054 // -verbose:[class/gc/jni] | |
| 2055 if (match_option(option, "-verbose", &tail)) { | |
| 2056 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 2057 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 2058 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2059 } else if (!strcmp(tail, ":gc")) { | |
| 2060 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2061 } else if (!strcmp(tail, ":jni")) { | |
| 2062 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 2063 } | |
| 2064 // -da / -ea / -disableassertions / -enableassertions | |
| 2065 // These accept an optional class/package name separated by a colon, e.g., | |
| 2066 // -da:java.lang.Thread. | |
| 2067 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 2068 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2069 if (*tail == '\0') { | |
| 2070 JavaAssertions::setUserClassDefault(enable); | |
| 2071 } else { | |
| 2072 assert(*tail == ':', "bogus match by match_option()"); | |
| 2073 JavaAssertions::addOption(tail + 1, enable); | |
| 2074 } | |
| 2075 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 2076 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 2077 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2078 JavaAssertions::setSystemClassDefault(enable); | |
| 2079 // -bootclasspath: | |
| 2080 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 2081 scp_p->reset_path(tail); | |
| 2082 *scp_assembly_required_p = true; | |
| 2083 // -bootclasspath/a: | |
| 2084 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 2085 scp_p->add_suffix(tail); | |
| 2086 *scp_assembly_required_p = true; | |
| 2087 // -bootclasspath/p: | |
| 2088 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 2089 scp_p->add_prefix(tail); | |
| 2090 *scp_assembly_required_p = true; | |
| 2091 // -Xrun | |
| 2092 } else if (match_option(option, "-Xrun", &tail)) { | |
|
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2093 if (tail != NULL) { |
| 0 | 2094 const char* pos = strchr(tail, ':'); |
| 2095 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2096 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2097 name[len] = '\0'; | |
| 2098 | |
| 2099 char *options = NULL; | |
| 2100 if(pos != NULL) { | |
| 2101 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 2102 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 2103 } | |
| 2104 #ifdef JVMTI_KERNEL | |
| 2105 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2106 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2107 } else | |
| 2108 #endif // JVMTI_KERNEL | |
| 2109 add_init_library(name, options); | |
| 2110 } | |
| 2111 // -agentlib and -agentpath | |
| 2112 } else if (match_option(option, "-agentlib:", &tail) || | |
| 2113 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 2114 if(tail != NULL) { | |
| 2115 const char* pos = strchr(tail, '='); | |
| 2116 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2117 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2118 name[len] = '\0'; | |
| 2119 | |
| 2120 char *options = NULL; | |
| 2121 if(pos != NULL) { | |
| 2122 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 2123 } | |
| 2124 #ifdef JVMTI_KERNEL | |
| 2125 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2126 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2127 } else | |
| 2128 #endif // JVMTI_KERNEL | |
| 2129 add_init_agent(name, options, is_absolute_path); | |
| 2130 | |
| 2131 } | |
| 2132 // -javaagent | |
| 2133 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 2134 if(tail != NULL) { | |
| 2135 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 2136 add_init_agent("instrument", options, false); | |
| 2137 } | |
| 2138 // -Xnoclassgc | |
| 2139 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 2140 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 2141 // -Xincgc: i-CMS | |
| 2142 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 2143 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2144 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 2145 // -Xnoincgc: no i-CMS | |
| 2146 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 2147 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2148 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 2149 // -Xconcgc | |
| 2150 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 2151 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2152 // -Xnoconcgc | |
| 2153 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 2154 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2155 // -Xbatch | |
| 2156 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 2157 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2158 // -Xmn for compatibility with other JVM vendors | |
| 2159 } else if (match_option(option, "-Xmn", &tail)) { | |
|
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2160 julong long_initial_eden_size = 0; |
| 0 | 2161 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 2162 if (errcode != arg_in_range) { | |
| 2163 jio_fprintf(defaultStream::error_stream(), | |
| 2164 "Invalid initial eden size: %s\n", option->optionString); | |
| 2165 describe_range_error(errcode); | |
| 2166 return JNI_EINVAL; | |
| 2167 } | |
| 1064 | 2168 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
| 2169 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
| 0 | 2170 // -Xms |
| 2171 } else if (match_option(option, "-Xms", &tail)) { | |
|
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2172 julong long_initial_heap_size = 0; |
| 0 | 2173 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 2174 if (errcode != arg_in_range) { | |
| 2175 jio_fprintf(defaultStream::error_stream(), | |
| 2176 "Invalid initial heap size: %s\n", option->optionString); | |
| 2177 describe_range_error(errcode); | |
| 2178 return JNI_EINVAL; | |
| 2179 } | |
| 1064 | 2180 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
| 0 | 2181 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2182 set_min_heap_size(InitialHeapSize); |
| 0 | 2183 // -Xmx |
| 2184 } else if (match_option(option, "-Xmx", &tail)) { | |
|
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2185 julong long_max_heap_size = 0; |
| 0 | 2186 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 2187 if (errcode != arg_in_range) { | |
| 2188 jio_fprintf(defaultStream::error_stream(), | |
| 2189 "Invalid maximum heap size: %s\n", option->optionString); | |
| 2190 describe_range_error(errcode); | |
| 2191 return JNI_EINVAL; | |
| 2192 } | |
| 1064 | 2193 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
| 0 | 2194 // Xmaxf |
| 2195 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 2196 int maxf = (int)(atof(tail) * 100); | |
| 2197 if (maxf < 0 || maxf > 100) { | |
| 2198 jio_fprintf(defaultStream::error_stream(), | |
| 2199 "Bad max heap free percentage size: %s\n", | |
| 2200 option->optionString); | |
| 2201 return JNI_EINVAL; | |
| 2202 } else { | |
| 2203 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 2204 } | |
| 2205 // Xminf | |
| 2206 } else if (match_option(option, "-Xminf", &tail)) { | |
| 2207 int minf = (int)(atof(tail) * 100); | |
| 2208 if (minf < 0 || minf > 100) { | |
| 2209 jio_fprintf(defaultStream::error_stream(), | |
| 2210 "Bad min heap free percentage size: %s\n", | |
| 2211 option->optionString); | |
| 2212 return JNI_EINVAL; | |
| 2213 } else { | |
| 2214 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 2215 } | |
| 2216 // -Xss | |
| 2217 } else if (match_option(option, "-Xss", &tail)) { | |
|
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2218 julong long_ThreadStackSize = 0; |
| 0 | 2219 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 2220 if (errcode != arg_in_range) { | |
| 2221 jio_fprintf(defaultStream::error_stream(), | |
| 2222 "Invalid thread stack size: %s\n", option->optionString); | |
| 2223 describe_range_error(errcode); | |
| 2224 return JNI_EINVAL; | |
| 2225 } | |
| 2226 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 2227 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 2228 round_to((int)long_ThreadStackSize, K) / K); | |
| 2229 // -Xoss | |
| 2230 } else if (match_option(option, "-Xoss", &tail)) { | |
| 2231 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 2232 // -Xmaxjitcodesize | |
|
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2233 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2234 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
|
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2235 julong long_ReservedCodeCacheSize = 0; |
| 0 | 2236 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
|
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2237 (size_t)InitialCodeCacheSize); |
| 0 | 2238 if (errcode != arg_in_range) { |
| 2239 jio_fprintf(defaultStream::error_stream(), | |
|
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2240 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2241 option->optionString, InitialCodeCacheSize/K); |
| 0 | 2242 describe_range_error(errcode); |
| 2243 return JNI_EINVAL; | |
| 2244 } | |
| 2245 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 2246 // -green | |
| 2247 } else if (match_option(option, "-green", &tail)) { | |
| 2248 jio_fprintf(defaultStream::error_stream(), | |
| 2249 "Green threads support not available\n"); | |
| 2250 return JNI_EINVAL; | |
| 2251 // -native | |
| 2252 } else if (match_option(option, "-native", &tail)) { | |
| 2253 // HotSpot always uses native threads, ignore silently for compatibility | |
| 2254 // -Xsqnopause | |
| 2255 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 2256 // EVM option, ignore silently for compatibility | |
| 2257 // -Xrs | |
| 2258 } else if (match_option(option, "-Xrs", &tail)) { | |
| 2259 // Classic/EVM option, new functionality | |
| 2260 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 2261 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 2262 // change default internal VM signals used - lower case for back compat | |
| 2263 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 2264 // -Xoptimize | |
| 2265 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 2266 // EVM option, ignore silently for compatibility | |
| 2267 // -Xprof | |
| 2268 } else if (match_option(option, "-Xprof", &tail)) { | |
| 2269 #ifndef FPROF_KERNEL | |
| 2270 _has_profile = true; | |
| 2271 #else // FPROF_KERNEL | |
| 2272 // do we have to exit? | |
| 2273 warning("Kernel VM does not support flat profiling."); | |
| 2274 #endif // FPROF_KERNEL | |
| 2275 // -Xaprof | |
| 2276 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2277 _has_alloc_profile = true; | |
| 2278 // -Xconcurrentio | |
| 2279 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2280 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2281 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2282 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2283 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2284 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2285 | |
| 2286 // -Xinternalversion | |
| 2287 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2288 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2289 VM_Version::internal_vm_info_string()); | |
| 2290 vm_exit(0); | |
| 2291 #ifndef PRODUCT | |
| 2292 // -Xprintflags | |
| 2293 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 2294 CommandLineFlags::printFlags(); | |
| 2295 vm_exit(0); | |
| 2296 #endif | |
| 2297 // -D | |
| 2298 } else if (match_option(option, "-D", &tail)) { | |
| 2299 if (!add_property(tail)) { | |
| 2300 return JNI_ENOMEM; | |
| 2301 } | |
| 2302 // Out of the box management support | |
| 2303 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2304 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2305 } | |
| 2306 // -Xint | |
| 2307 } else if (match_option(option, "-Xint", &tail)) { | |
| 2308 set_mode_flags(_int); | |
| 2309 // -Xmixed | |
| 2310 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2311 set_mode_flags(_mixed); | |
| 2312 // -Xcomp | |
| 2313 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2314 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2315 set_mode_flags(_comp); | |
| 2316 | |
| 2317 // -Xshare:dump | |
| 2318 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2319 #ifdef TIERED | |
| 2320 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2321 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2322 #elif defined(COMPILER2) | |
| 2323 vm_exit_during_initialization( | |
| 2324 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2325 #elif defined(KERNEL) | |
| 2326 vm_exit_during_initialization( | |
| 2327 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2328 #else | |
| 2329 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2330 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2331 #endif | |
| 2332 // -Xshare:on | |
| 2333 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2334 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2335 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2336 // -Xshare:auto | |
| 2337 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2338 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2339 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2340 // -Xshare:off | |
| 2341 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2342 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2343 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2344 | |
| 2345 // -Xverify | |
| 2346 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2347 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2348 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2349 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2350 } else if (strcmp(tail, ":remote") == 0) { | |
| 2351 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2352 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2353 } else if (strcmp(tail, ":none") == 0) { | |
| 2354 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2355 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2356 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2357 return JNI_EINVAL; | |
| 2358 } | |
| 2359 // -Xdebug | |
| 2360 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2361 // note this flag has been used, then ignore | |
| 2362 set_xdebug_mode(true); | |
| 2363 // -Xnoagent | |
| 2364 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2365 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2366 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2367 // Bind user level threads to kernel threads (Solaris only) | |
| 2368 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2369 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2370 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2371 // ostream_init_log(), when called will use this filename | |
| 2372 // to initialize a fileStream. | |
| 2373 _gc_log_filename = strdup(tail); | |
| 2374 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2375 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2376 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2377 | |
| 2378 // JNI hooks | |
| 2379 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2380 if (!strcmp(tail, ":jni")) { | |
| 2381 CheckJNICalls = true; | |
| 2382 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2383 "check")) { | |
| 2384 return JNI_EINVAL; | |
| 2385 } | |
| 2386 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2387 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2388 } else if (match_option(option, "exit", &tail)) { | |
| 2389 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2390 } else if (match_option(option, "abort", &tail)) { | |
| 2391 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2392 // -XX:+AggressiveHeap | |
| 2393 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2394 | |
| 2395 // This option inspects the machine and attempts to set various | |
| 2396 // parameters to be optimal for long-running, memory allocation | |
| 2397 // intensive jobs. It is intended for machines with large | |
| 2398 // amounts of cpu and memory. | |
| 2399 | |
| 2400 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2401 // VM, but we may not be able to represent the total physical memory | |
| 2402 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2403 // Thus, we need to make sure we're using a julong for intermediate | |
| 2404 // calculations. | |
| 2405 julong initHeapSize; | |
| 2406 julong total_memory = os::physical_memory(); | |
| 2407 | |
| 2408 if (total_memory < (julong)256*M) { | |
| 2409 jio_fprintf(defaultStream::error_stream(), | |
| 2410 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2411 vm_exit(1); | |
| 2412 } | |
| 2413 | |
| 2414 // The heap size is half of available memory, or (at most) | |
| 2415 // all of possible memory less 160mb (leaving room for the OS | |
| 2416 // when using ISM). This is the maximum; because adaptive sizing | |
| 2417 // is turned on below, the actual space used may be smaller. | |
| 2418 | |
| 2419 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2420 total_memory - (julong)160*M); | |
| 2421 | |
| 2422 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2423 // process space. The 64bit VM version of this function is a nop. | |
| 2424 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2425 | |
| 2426 // The perm gen is separate but contiguous with the | |
| 2427 // object heap (and is reserved with it) so subtract it | |
| 2428 // from the heap size. | |
| 2429 if (initHeapSize > MaxPermSize) { | |
| 2430 initHeapSize = initHeapSize - MaxPermSize; | |
| 2431 } else { | |
| 2432 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2433 } | |
| 2434 | |
| 2435 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2436 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 1064 | 2437 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
| 0 | 2438 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2439 set_min_heap_size(initHeapSize); |
| 0 | 2440 } |
| 2441 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2442 // Make the young generation 3/8ths of the total heap. | |
| 2443 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2444 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2445 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2446 } | |
| 2447 | |
| 2448 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2449 | |
| 2450 // Increase some data structure sizes for efficiency | |
| 2451 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2452 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2453 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2454 | |
| 2455 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2456 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2457 // space per-gc-thread buffers. The default is 4kw. | |
| 2458 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2459 | |
| 2460 // OldPLABSize is the size of the buffers in the old gen that | |
| 2461 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2462 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2463 // The default size is 1kw. These buffers are rarely used, since the | |
| 2464 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2465 // are occasions when there's lots of live data in the young gen | |
| 2466 // and we end up promoting some of it. We don't have a definite | |
| 2467 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2468 // is that a bigger PLAB results in retaining something like the | |
| 2469 // original allocation order after promotion, which improves mutator | |
| 2470 // locality. A minor effect may be that larger PLABs reduce the | |
| 2471 // number of PLAB allocation events during gc. The value of 8kw | |
| 2472 // was arrived at by experimenting with specjbb. | |
| 2473 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2474 | |
| 2475 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
| 2476 // a more conservative which-method-do-I-compile policy when one | |
| 2477 // of the counters maintained by the interpreter trips. The | |
| 2478 // result is reduced startup time and improved specjbb and | |
| 2479 // alacrity performance. Zero is the default, but we set it | |
| 2480 // explicitly here in case the default changes. | |
| 2481 // See runtime/compilationPolicy.*. | |
| 2482 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
| 2483 | |
| 2484 // Enable parallel GC and adaptive generation sizing | |
| 2485 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
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2486 FLAG_SET_DEFAULT(ParallelGCThreads, |
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|
2487 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2488 |
| 2489 // Encourage steady state memory management | |
| 2490 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2491 | |
| 2492 // This appears to improve mutator locality | |
| 2493 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2494 | |
| 2495 // Get around early Solaris scheduling bug | |
| 2496 // (affinity vs other jobs on system) | |
| 2497 // but disallow DR and offlining (5008695). | |
| 2498 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2499 | |
| 2500 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2501 // The last option must always win. | |
| 2502 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2503 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2504 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2505 // The last option must always win. | |
| 2506 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2507 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2508 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2509 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2510 jio_fprintf(defaultStream::error_stream(), | |
| 2511 "Please use CMSClassUnloadingEnabled in place of " | |
| 2512 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2513 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2514 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2515 jio_fprintf(defaultStream::error_stream(), | |
| 2516 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2517 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2518 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2519 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2520 jio_fprintf(defaultStream::error_stream(), | |
| 2521 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2522 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2523 // The TLE options are for compatibility with 1.3 and will be | |
| 2524 // removed without notice in a future release. These options | |
| 2525 // are not to be documented. | |
| 2526 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2527 // No longer used. | |
| 2528 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2529 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2530 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2531 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2532 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2533 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2534 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2535 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2536 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2537 // No longer used. | |
| 2538 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
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|
2539 julong long_tlab_size = 0; |
| 0 | 2540 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2541 if (errcode != arg_in_range) { | |
| 2542 jio_fprintf(defaultStream::error_stream(), | |
| 2543 "Invalid TLAB size: %s\n", option->optionString); | |
| 2544 describe_range_error(errcode); | |
| 2545 return JNI_EINVAL; | |
| 2546 } | |
| 2547 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2548 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2549 // No longer used. | |
| 2550 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2551 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2552 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2553 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2554 SOLARIS_ONLY( | |
| 2555 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2556 warning("-XX:+UsePermISM is obsolete."); | |
| 2557 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2558 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2559 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2560 ) | |
| 2561 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2562 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2563 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2564 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2565 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2566 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2567 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 2568 #ifdef SOLARIS | |
| 2569 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
| 2570 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2571 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2572 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 2573 #else // ndef SOLARIS | |
| 2574 jio_fprintf(defaultStream::error_stream(), | |
| 2575 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
| 2576 return JNI_EINVAL; | |
| 2577 #endif // ndef SOLARIS | |
| 2578 #ifdef ASSERT | |
|
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|
2579 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
| 0 | 2580 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
| 2581 // disable scavenge before parallel mark-compact | |
| 2582 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2583 #endif | |
|
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|
2584 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
| 0 | 2585 julong cms_blocks_to_claim = (julong)atol(tail); |
| 2586 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2587 jio_fprintf(defaultStream::error_stream(), | |
|
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2588 "Please use -XX:OldPLABSize in place of " |
|
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|
2589 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
|
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|
2590 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
|
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|
2591 julong cms_blocks_to_claim = (julong)atol(tail); |
|
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|
2592 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
|
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|
2593 jio_fprintf(defaultStream::error_stream(), |
|
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diff
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|
2594 "Please use -XX:OldPLABSize in place of " |
| 0 | 2595 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
|
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|
2596 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
|
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|
2597 julong old_plab_size = 0; |
| 0 | 2598 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2599 if (errcode != arg_in_range) { | |
| 2600 jio_fprintf(defaultStream::error_stream(), | |
| 2601 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2602 describe_range_error(errcode); | |
| 2603 return JNI_EINVAL; | |
| 2604 } | |
|
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|
2605 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2606 jio_fprintf(defaultStream::error_stream(), |
| 2607 "Please use -XX:OldPLABSize in place of " | |
| 2608 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
|
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|
2609 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
|
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|
2610 julong young_plab_size = 0; |
| 0 | 2611 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2612 if (errcode != arg_in_range) { | |
| 2613 jio_fprintf(defaultStream::error_stream(), | |
| 2614 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2615 describe_range_error(errcode); | |
| 2616 return JNI_EINVAL; | |
| 2617 } | |
|
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|
2618 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2619 jio_fprintf(defaultStream::error_stream(), |
| 2620 "Please use -XX:YoungPLABSize in place of " | |
| 2621 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 1284 | 2622 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
| 2623 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
| 2624 julong stack_size = 0; | |
| 2625 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
| 2626 if (errcode != arg_in_range) { | |
| 2627 jio_fprintf(defaultStream::error_stream(), | |
| 2628 "Invalid mark stack size: %s\n", option->optionString); | |
| 2629 describe_range_error(errcode); | |
| 2630 return JNI_EINVAL; | |
| 2631 } | |
| 2632 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
| 2633 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
| 2634 julong max_stack_size = 0; | |
| 2635 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
| 2636 if (errcode != arg_in_range) { | |
| 2637 jio_fprintf(defaultStream::error_stream(), | |
| 2638 "Invalid maximum mark stack size: %s\n", | |
| 2639 option->optionString); | |
| 2640 describe_range_error(errcode); | |
| 2641 return JNI_EINVAL; | |
| 2642 } | |
| 2643 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
| 2644 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
| 2645 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
| 2646 uintx conc_threads = 0; | |
| 2647 if (!parse_uintx(tail, &conc_threads, 1)) { | |
| 2648 jio_fprintf(defaultStream::error_stream(), | |
| 2649 "Invalid concurrent threads: %s\n", option->optionString); | |
| 2650 return JNI_EINVAL; | |
| 2651 } | |
| 2652 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
|
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2653 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
| 0 | 2654 // Skip -XX:Flags= since that case has already been handled |
| 2655 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2656 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2657 return JNI_EINVAL; | |
| 2658 } | |
| 2659 } | |
| 2660 // Unknown option | |
| 2661 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2662 return JNI_ERR; | |
| 2663 } | |
| 2664 } | |
|
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|
2665 // Change the default value for flags which have different default values |
|
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|
2666 // when working with older JDKs. |
|
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|
2667 if (JDK_Version::current().compare_major(6) <= 0 && |
|
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|
2668 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
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|
2669 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
|
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|
2670 } |
|
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|
2671 #ifdef LINUX |
|
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|
2672 if (JDK_Version::current().compare_major(6) <= 0 && |
|
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|
2673 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
|
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|
2674 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
|
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|
2675 } |
|
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|
2676 #endif // LINUX |
| 0 | 2677 return JNI_OK; |
| 2678 } | |
| 2679 | |
| 2680 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2681 // This must be done after all -D arguments have been processed. | |
| 2682 scp_p->expand_endorsed(); | |
| 2683 | |
| 2684 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2685 // Assemble the bootclasspath elements into the final path. | |
| 2686 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2687 } | |
| 2688 | |
| 2689 // This must be done after all arguments have been processed. | |
| 2690 // java_compiler() true means set to "NONE" or empty. | |
| 2691 if (java_compiler() && !xdebug_mode()) { | |
| 2692 // For backwards compatibility, we switch to interpreted mode if | |
| 2693 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2694 // not specified. | |
| 2695 set_mode_flags(_int); | |
| 2696 } | |
| 2697 if (CompileThreshold == 0) { | |
| 2698 set_mode_flags(_int); | |
| 2699 } | |
| 2700 | |
| 2701 #ifndef COMPILER2 | |
| 2702 // Don't degrade server performance for footprint | |
| 2703 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2704 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2705 // No need for large granularity pages w/small heaps. | |
| 2706 // Note that large pages are enabled/disabled for both the | |
| 2707 // Java heap and the code cache. | |
| 2708 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2709 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2710 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2711 } | |
|
342
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6711316: Open source the Garbage-First garbage collector
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135
diff
changeset
|
2712 |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2713 // Tiered compilation is undefined with C1. |
|
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2714 TieredCompilation = false; |
| 0 | 2715 #else |
| 2716 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2717 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2718 } | |
| 2719 #endif | |
| 2720 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2721 // 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
|
2722 // to be true unless the property has already been set. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2723 // 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
|
2724 if (os::is_headless_jre()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2725 const char* headless = Arguments::get_property("java.awt.headless"); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2726 if (headless == NULL) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2727 char envbuffer[128]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2728 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2729 if (!add_property("java.awt.headless=true")) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2730 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2731 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2732 } else { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2733 char buffer[256]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2734 strcpy(buffer, "java.awt.headless="); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2735 strcat(buffer, envbuffer); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2736 if (!add_property(buffer)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2737 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2738 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2739 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2740 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2741 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2742 |
| 0 | 2743 if (!check_vm_args_consistency()) { |
| 2744 return JNI_ERR; | |
| 2745 } | |
| 2746 | |
| 2747 return JNI_OK; | |
| 2748 } | |
| 2749 | |
| 2750 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2751 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2752 scp_assembly_required_p); | |
| 2753 } | |
| 2754 | |
| 2755 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2756 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2757 scp_assembly_required_p); | |
| 2758 } | |
| 2759 | |
| 2760 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2761 const int N_MAX_OPTIONS = 64; | |
| 2762 const int OPTION_BUFFER_SIZE = 1024; | |
| 2763 char buffer[OPTION_BUFFER_SIZE]; | |
| 2764 | |
| 2765 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2766 // Don't check this variable if user has special privileges | |
| 2767 // (e.g. unix su command). | |
| 2768 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2769 !os::have_special_privileges()) { | |
| 2770 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2771 jio_fprintf(defaultStream::error_stream(), | |
| 2772 "Picked up %s: %s\n", name, buffer); | |
| 2773 char* rd = buffer; // pointer to the input string (rd) | |
| 2774 int i; | |
| 2775 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2776 while (isspace(*rd)) rd++; // skip whitespace | |
| 2777 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2778 | |
| 2779 // The output, option string, overwrites the input string. | |
| 2780 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2781 // input string (rd). | |
| 2782 char* wrt = rd; | |
| 2783 | |
| 2784 options[i++].optionString = wrt; // Fill in option | |
| 2785 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2786 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2787 int quote = *rd; // matching quote to look for | |
| 2788 rd++; // don't copy open quote | |
| 2789 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2790 if (*rd == 0) { // string termination means unmatched string | |
| 2791 jio_fprintf(defaultStream::error_stream(), | |
| 2792 "Unmatched quote in %s\n", name); | |
| 2793 return JNI_ERR; | |
| 2794 } | |
| 2795 *wrt++ = *rd++; // copy to option string | |
| 2796 } | |
| 2797 rd++; // don't copy close quote | |
| 2798 } else { | |
| 2799 *wrt++ = *rd++; // copy to option string | |
| 2800 } | |
| 2801 } | |
| 2802 // Need to check if we're done before writing a NULL, | |
| 2803 // because the write could be to the byte that rd is pointing to. | |
| 2804 if (*rd++ == 0) { | |
| 2805 *wrt = 0; | |
| 2806 break; | |
| 2807 } | |
| 2808 *wrt = 0; // Zero terminate option | |
| 2809 } | |
| 2810 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2811 JavaVMInitArgs vm_args; | |
| 2812 vm_args.version = JNI_VERSION_1_2; | |
| 2813 vm_args.options = options; | |
| 2814 vm_args.nOptions = i; | |
| 564 | 2815 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2816 |
| 2817 if (PrintVMOptions) { | |
| 2818 const char* tail; | |
| 2819 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2820 const JavaVMOption *option = vm_args.options + i; | |
| 2821 if (match_option(option, "-XX:", &tail)) { | |
| 2822 logOption(tail); | |
| 2823 } | |
| 2824 } | |
| 2825 } | |
| 2826 | |
| 2827 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2828 } | |
| 2829 return JNI_OK; | |
| 2830 } | |
| 2831 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2832 void Arguments::set_shared_spaces_flags() { |
| 2378 | 2833 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
| 2834 const bool might_share = must_share || UseSharedSpaces; | |
| 2835 | |
| 2836 // The string table is part of the shared archive so the size must match. | |
| 2837 if (!FLAG_IS_DEFAULT(StringTableSize)) { | |
| 2838 // Disable sharing. | |
| 2839 if (must_share) { | |
| 2840 warning("disabling shared archive %s because of non-default " | |
| 2841 "StringTableSize", DumpSharedSpaces ? "creation" : "use"); | |
| 2842 } | |
| 2843 if (might_share) { | |
| 2844 FLAG_SET_DEFAULT(DumpSharedSpaces, false); | |
| 2845 FLAG_SET_DEFAULT(RequireSharedSpaces, false); | |
| 2846 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 2847 } | |
| 2848 return; | |
| 2849 } | |
| 2850 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2851 // 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
|
2852 // 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
|
2853 // settings. |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2854 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2855 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2856 UseCompressedOops || UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2857 if (cannot_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2858 if (must_share) { |
| 2378 | 2859 warning("selecting serial gc and disabling large pages %s" |
| 2860 "because of %s", "" LP64_ONLY("and compressed oops "), | |
| 2861 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
| 2862 force_serial_gc(); | |
| 2863 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
| 2864 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2865 } else { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2866 if (UseSharedSpaces && Verbose) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2867 warning("turning off use of shared archive because of " |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2868 "choice of garbage collector or large pages"); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2869 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2870 no_shared_spaces(); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2871 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2872 } else if (UseLargePages && might_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2873 // 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
|
2874 // there may not even be a shared archive to use. |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2875 FLAG_SET_DEFAULT(UseLargePages, false); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2876 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2877 } |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
2878 |
| 0 | 2879 // Parse entry point called from JNI_CreateJavaVM |
| 2880 | |
| 2881 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2882 | |
| 2883 // Sharing support | |
| 2884 // Construct the path to the archive | |
| 2885 char jvm_path[JVM_MAXPATHLEN]; | |
| 2886 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2887 #ifdef TIERED | |
| 2888 if (strstr(jvm_path, "client") != NULL) { | |
| 2889 force_client_mode = true; | |
| 2890 } | |
| 2891 #endif // TIERED | |
| 2892 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2893 if (end != NULL) *end = '\0'; | |
| 2894 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2895 strlen(os::file_separator()) + 20); | |
| 2896 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2897 strcpy(shared_archive_path, jvm_path); | |
| 2898 strcat(shared_archive_path, os::file_separator()); | |
| 2899 strcat(shared_archive_path, "classes"); | |
| 2900 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2901 strcat(shared_archive_path, ".jsa"); | |
| 2902 SharedArchivePath = shared_archive_path; | |
| 2903 | |
| 2904 // Remaining part of option string | |
| 2905 const char* tail; | |
| 2906 | |
| 2907 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2908 bool settings_file_specified = false; | |
| 564 | 2909 const char* flags_file; |
| 0 | 2910 int index; |
| 2911 for (index = 0; index < args->nOptions; index++) { | |
| 2912 const JavaVMOption *option = args->options + index; | |
| 2913 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2914 flags_file = tail; |
| 0 | 2915 settings_file_specified = true; |
| 2916 } | |
| 2917 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2918 PrintVMOptions = true; | |
| 2919 } | |
|
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2920 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
|
2921 PrintVMOptions = false; |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2922 } |
| 564 | 2923 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2924 IgnoreUnrecognizedVMOptions = true; | |
| 2925 } | |
| 2926 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2927 IgnoreUnrecognizedVMOptions = false; | |
| 2928 } | |
| 1150 | 2929 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
| 2930 CommandLineFlags::printFlags(); | |
| 2931 vm_exit(0); | |
| 2932 } | |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2933 |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2934 #ifndef PRODUCT |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2935 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2936 CommandLineFlags::printFlags(true); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2937 vm_exit(0); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2938 } |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2939 #endif |
| 564 | 2940 } |
| 2941 | |
| 2942 if (IgnoreUnrecognizedVMOptions) { | |
| 2943 // uncast const to modify the flag args->ignoreUnrecognized | |
| 2944 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 2945 } | |
| 2946 | |
| 2947 // Parse specified settings file | |
| 2948 if (settings_file_specified) { | |
| 2949 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 2950 return JNI_EINVAL; | |
| 2951 } | |
| 0 | 2952 } |
| 2953 | |
| 2954 // Parse default .hotspotrc settings file | |
| 2955 if (!settings_file_specified) { | |
| 2956 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 2957 return JNI_EINVAL; | |
| 2958 } | |
| 2959 } | |
| 2960 | |
| 2961 if (PrintVMOptions) { | |
| 2962 for (index = 0; index < args->nOptions; index++) { | |
| 2963 const JavaVMOption *option = args->options + index; | |
| 2964 if (match_option(option, "-XX:", &tail)) { | |
| 2965 logOption(tail); | |
| 2966 } | |
| 2967 } | |
| 2968 } | |
| 2969 | |
| 2970 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 2971 jint result = parse_vm_init_args(args); | |
| 2972 if (result != JNI_OK) { | |
| 2973 return result; | |
| 2974 } | |
| 2975 | |
| 2976 #ifndef PRODUCT | |
| 2977 if (TraceBytecodesAt != 0) { | |
| 2978 TraceBytecodes = true; | |
| 2979 } | |
| 2980 if (CountCompiledCalls) { | |
| 2981 if (UseCounterDecay) { | |
| 2982 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 2983 UseCounterDecay = false; | |
| 2984 } | |
| 2985 } | |
| 2986 #endif // PRODUCT | |
| 2987 | |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2988 // Transitional |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2989 if (EnableMethodHandles || AnonymousClasses) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2990 if (!EnableInvokeDynamic && !FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2991 warning("EnableMethodHandles and AnonymousClasses are obsolete. Keeping EnableInvokeDynamic disabled."); |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2992 } else { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2993 EnableInvokeDynamic = true; |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2994 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2995 } |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2996 |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2997 // JSR 292 is not supported before 1.7 |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2998 if (!JDK_Version::is_gte_jdk17x_version()) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
2999 if (EnableInvokeDynamic) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3000 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3001 warning("JSR 292 is not supported before 1.7. Disabling support."); |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3002 } |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3003 EnableInvokeDynamic = false; |
| 710 | 3004 } |
| 3005 } | |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3006 |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3007 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3008 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3009 warning("forcing ScavengeRootsInCode non-zero because EnableInvokeDynamic is true"); |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3010 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3011 ScavengeRootsInCode = 1; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3012 } |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3013 if (!JavaObjectsInPerm && ScavengeRootsInCode == 0) { |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3014 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3015 warning("forcing ScavengeRootsInCode non-zero because JavaObjectsInPerm is false"); |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3016 } |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3017 ScavengeRootsInCode = 1; |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3018 } |
| 710 | 3019 |
| 0 | 3020 if (PrintGCDetails) { |
| 3021 // Turn on -verbose:gc options as well | |
| 3022 PrintGC = true; | |
| 3023 } | |
| 3024 | |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3025 // 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
|
3026 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
|
3027 |
| 0 | 3028 #ifdef SERIALGC |
| 1064 | 3029 force_serial_gc(); |
| 0 | 3030 #endif // SERIALGC |
| 3031 #ifdef KERNEL | |
| 3032 no_shared_spaces(); | |
| 3033 #endif // KERNEL | |
| 3034 | |
| 3035 // Set flags based on ergonomics. | |
| 3036 set_ergonomics_flags(); | |
| 3037 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3038 set_shared_spaces_flags(); |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3039 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3040 // Check the GC selections again. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3041 if (!check_gc_consistency()) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3042 return JNI_EINVAL; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3043 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3044 |
| 1783 | 3045 if (TieredCompilation) { |
| 3046 set_tiered_flags(); | |
| 3047 } else { | |
| 3048 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
| 3049 if (CompilationPolicyChoice >= 2) { | |
| 3050 vm_exit_during_initialization( | |
| 3051 "Incompatible compilation policy selected", NULL); | |
| 3052 } | |
| 3053 } | |
| 3054 | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3055 #ifndef KERNEL |
|
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3056 // Set heap size based on available physical memory |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3057 set_heap_size(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3058 // Set per-collector flags |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3059 if (UseParallelGC || UseParallelOldGC) { |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3060 set_parallel_gc_flags(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3061 } else if (UseConcMarkSweepGC) { // should be done before ParNew check below |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3062 set_cms_and_parnew_gc_flags(); |
|
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3063 } else if (UseParNewGC) { // skipped if CMS is set above |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3064 set_parnew_gc_flags(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3065 } else if (UseG1GC) { |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3066 set_g1_gc_flags(); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3067 } |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3068 #endif // KERNEL |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3069 |
| 0 | 3070 #ifdef SERIALGC |
| 3071 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 3072 #endif // SERIALGC | |
| 3073 | |
| 3074 // Set bytecode rewriting flags | |
| 3075 set_bytecode_flags(); | |
| 3076 | |
| 3077 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 3078 set_aggressive_opts_flags(); | |
| 3079 | |
|
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3080 // Turn off biased locking for locking debug mode flags, |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3081 // 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
|
3082 // biased locking. |
| 2331 | 3083 if (UseHeavyMonitors |
| 3084 #ifdef COMPILER1 | |
| 3085 || !UseFastLocking | |
| 3086 #endif // COMPILER1 | |
| 3087 ) { | |
|
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3088 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3089 // 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
|
3090 // can't enable biased locking here |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3091 warning("Biased Locking is not supported with locking debug flags" |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3092 "; ignoring UseBiasedLocking flag." ); |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3093 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3094 UseBiasedLocking = false; |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3095 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3096 |
| 0 | 3097 #ifdef CC_INTERP |
| 1131 | 3098 // Clear flags not supported by the C++ interpreter |
| 3099 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
| 0 | 3100 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
| 1131 | 3101 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
| 3102 #endif // CC_INTERP | |
| 3103 | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3104 #ifdef COMPILER2 |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3105 if (!UseBiasedLocking || EmitSync != 0) { |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3106 UseOptoBiasInlining = false; |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3107 } |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3108 #endif |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3109 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3110 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3111 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
|
3112 DebugNonSafepoints = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3113 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3114 |
|
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3115 #ifndef PRODUCT |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3116 if (CompileTheWorld) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3117 // 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
|
3118 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3119 NmethodSweepFraction = 1; |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3120 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3121 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3122 #endif |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3123 |
| 0 | 3124 if (PrintCommandLineFlags) { |
| 3125 CommandLineFlags::printSetFlags(); | |
| 3126 } | |
| 3127 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3128 // Apply CPU specific policy for the BiasedLocking |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3129 if (UseBiasedLocking) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3130 if (!VM_Version::use_biased_locking() && |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3131 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3132 UseBiasedLocking = false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3133 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3134 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3135 |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3136 // 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
|
3137 // 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
|
3138 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
|
3139 bool set = false; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3140 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3141 if (!set) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3142 FLAG_SET_DEFAULT(PauseAtExit, true); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3143 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3144 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3145 |
| 0 | 3146 return JNI_OK; |
| 3147 } | |
| 3148 | |
| 3149 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 3150 int count = 0; | |
| 3151 while(pl != NULL) { | |
| 3152 count++; | |
| 3153 pl = pl->next(); | |
| 3154 } | |
| 3155 return count; | |
| 3156 } | |
| 3157 | |
| 3158 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 3159 assert(key != NULL, "just checking"); | |
| 3160 SystemProperty* prop; | |
| 3161 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 3162 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 3163 } | |
| 3164 return NULL; | |
| 3165 } | |
| 3166 | |
| 3167 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 3168 int count = 0; | |
| 3169 const char* ret_val = NULL; | |
| 3170 | |
| 3171 while(pl != NULL) { | |
| 3172 if(count >= index) { | |
| 3173 ret_val = pl->key(); | |
| 3174 break; | |
| 3175 } | |
| 3176 count++; | |
| 3177 pl = pl->next(); | |
| 3178 } | |
| 3179 | |
| 3180 return ret_val; | |
| 3181 } | |
| 3182 | |
| 3183 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 3184 int count = 0; | |
| 3185 char* ret_val = NULL; | |
| 3186 | |
| 3187 while(pl != NULL) { | |
| 3188 if(count >= index) { | |
| 3189 ret_val = pl->value(); | |
| 3190 break; | |
| 3191 } | |
| 3192 count++; | |
| 3193 pl = pl->next(); | |
| 3194 } | |
| 3195 | |
| 3196 return ret_val; | |
| 3197 } | |
| 3198 | |
| 3199 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 3200 SystemProperty* p = *plist; | |
| 3201 if (p == NULL) { | |
| 3202 *plist = new_p; | |
| 3203 } else { | |
| 3204 while (p->next() != NULL) { | |
| 3205 p = p->next(); | |
| 3206 } | |
| 3207 p->set_next(new_p); | |
| 3208 } | |
| 3209 } | |
| 3210 | |
| 3211 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 3212 if (plist == NULL) | |
| 3213 return; | |
| 3214 | |
| 3215 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 3216 PropertyList_add(plist, new_p); | |
| 3217 } | |
| 3218 | |
| 3219 // This add maintains unique property key in the list. | |
| 691 | 3220 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 3221 if (plist == NULL) |
| 3222 return; | |
| 3223 | |
| 3224 // If property key exist then update with new value. | |
| 3225 SystemProperty* prop; | |
| 3226 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 3227 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 3228 if (append) { |
| 3229 prop->append_value(v); | |
| 3230 } else { | |
| 3231 prop->set_value(v); | |
| 3232 } | |
| 0 | 3233 return; |
| 3234 } | |
| 3235 } | |
| 3236 | |
| 3237 PropertyList_add(plist, k, v); | |
| 3238 } | |
| 3239 | |
| 3240 #ifdef KERNEL | |
| 3241 char *Arguments::get_kernel_properties() { | |
| 3242 // Find properties starting with kernel and append them to string | |
| 3243 // We need to find out how long they are first because the URL's that they | |
| 3244 // might point to could get long. | |
| 3245 int length = 0; | |
| 3246 SystemProperty* prop; | |
| 3247 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3248 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3249 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 3250 } | |
| 3251 } | |
| 3252 // Add one for null terminator. | |
| 3253 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 3254 if (length != 0) { | |
| 3255 int pos = 0; | |
| 3256 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3257 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3258 jio_snprintf(&props[pos], length-pos, | |
| 3259 "-D%s=%s ", prop->key(), prop->value()); | |
| 3260 pos = strlen(props); | |
| 3261 } | |
| 3262 } | |
| 3263 } | |
| 3264 // null terminate props in case of null | |
| 3265 props[length] = '\0'; | |
| 3266 return props; | |
| 3267 } | |
| 3268 #endif // KERNEL | |
| 3269 | |
| 3270 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 3271 // Returns true if all of the source pointed by src has been copied over to | |
| 3272 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 3273 // Notes: | |
| 3274 // 1. If the length (buflen) of the destination buffer excluding the | |
| 3275 // NULL terminator character is not long enough for holding the expanded | |
| 3276 // pid characters, it also returns false instead of returning the partially | |
| 3277 // expanded one. | |
| 3278 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 3279 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 3280 char* buf, size_t buflen) { | |
| 3281 const char* p = src; | |
| 3282 char* b = buf; | |
| 3283 const char* src_end = &src[srclen]; | |
| 3284 char* buf_end = &buf[buflen - 1]; | |
| 3285 | |
| 3286 while (p < src_end && b < buf_end) { | |
| 3287 if (*p == '%') { | |
| 3288 switch (*(++p)) { | |
| 3289 case '%': // "%%" ==> "%" | |
| 3290 *b++ = *p++; | |
| 3291 break; | |
| 3292 case 'p': { // "%p" ==> current process id | |
| 3293 // buf_end points to the character before the last character so | |
| 3294 // that we could write '\0' to the end of the buffer. | |
| 3295 size_t buf_sz = buf_end - b + 1; | |
| 3296 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 3297 | |
| 3298 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 3299 // the expanded pid, returns false. | |
| 3300 if (ret < 0 || ret >= (int)buf_sz) { | |
| 3301 return false; | |
| 3302 } else { | |
| 3303 b += ret; | |
| 3304 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 3305 if (p == src_end && b == buf_end + 1) { | |
| 3306 // reach the end of the buffer. | |
| 3307 return true; | |
| 3308 } | |
| 3309 } | |
| 3310 p++; | |
| 3311 break; | |
| 3312 } | |
| 3313 default : | |
| 3314 *b++ = '%'; | |
| 3315 } | |
| 3316 } else { | |
| 3317 *b++ = *p++; | |
| 3318 } | |
| 3319 } | |
| 3320 *b = '\0'; | |
| 3321 return (p == src_end); // return false if not all of the source was copied | |
| 3322 } |