Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 3546:4aa80ca3dbec
Separate compiler bootstrappath from application bootstrappath.
| author | Thomas Wuerthinger <thomas@wuerthinger.net> |
|---|---|
| date | Sun, 14 Aug 2011 00:55:28 +0200 |
| parents | 622bbc9dafbd |
| children | 409ef3a68dc8 |
| 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 |
| 2474 | 62 // Note: This is a special bug reporting site for the JVM |
| 63 #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" | |
| 0 | 64 #define DEFAULT_JAVA_LAUNCHER "generic" |
| 65 | |
| 66 char** Arguments::_jvm_flags_array = NULL; | |
| 67 int Arguments::_num_jvm_flags = 0; | |
| 68 char** Arguments::_jvm_args_array = NULL; | |
| 69 int Arguments::_num_jvm_args = 0; | |
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70 char** Arguments::_graal_args_array = NULL; |
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71 int Arguments::_num_graal_args = 0; |
| 0 | 72 char* Arguments::_java_command = NULL; |
| 73 SystemProperty* Arguments::_system_properties = NULL; | |
| 74 const char* Arguments::_gc_log_filename = NULL; | |
| 75 bool Arguments::_has_profile = false; | |
| 76 bool Arguments::_has_alloc_profile = false; | |
| 77 uintx Arguments::_min_heap_size = 0; | |
| 78 Arguments::Mode Arguments::_mode = _mixed; | |
| 79 bool Arguments::_java_compiler = false; | |
| 80 bool Arguments::_xdebug_mode = false; | |
| 81 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 82 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 83 int Arguments::_sun_java_launcher_pid = -1; | |
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84 bool Arguments::_created_by_gamma_launcher = false; |
| 0 | 85 |
| 86 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 87 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 88 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 89 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 90 bool Arguments::_ClipInlining = ClipInlining; | |
| 91 | |
| 92 char* Arguments::SharedArchivePath = NULL; | |
| 93 | |
| 94 AgentLibraryList Arguments::_libraryList; | |
| 95 AgentLibraryList Arguments::_agentList; | |
| 96 | |
| 97 abort_hook_t Arguments::_abort_hook = NULL; | |
| 98 exit_hook_t Arguments::_exit_hook = NULL; | |
| 99 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 100 | |
| 101 | |
| 102 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 103 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 104 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 105 SystemProperty *Arguments::_java_library_path = NULL; | |
| 106 SystemProperty *Arguments::_java_home = NULL; | |
| 107 SystemProperty *Arguments::_java_class_path = NULL; | |
| 108 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
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109 SystemProperty *Arguments::_compiler_class_path = NULL; |
| 0 | 110 |
| 111 char* Arguments::_meta_index_path = NULL; | |
| 112 char* Arguments::_meta_index_dir = NULL; | |
| 113 | |
| 114 static bool force_client_mode = false; | |
| 115 | |
| 116 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 117 | |
| 118 static bool match_option(const JavaVMOption *option, const char* name, | |
| 119 const char** tail) { | |
| 120 int len = (int)strlen(name); | |
| 121 if (strncmp(option->optionString, name, len) == 0) { | |
| 122 *tail = option->optionString + len; | |
| 123 return true; | |
| 124 } else { | |
| 125 return false; | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 static void logOption(const char* opt) { | |
| 130 if (PrintVMOptions) { | |
| 131 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 // Process java launcher properties. | |
| 136 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 137 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 138 // Must do this before setting up other system properties, | |
| 139 // as some of them may depend on launcher type. | |
| 140 for (int index = 0; index < args->nOptions; index++) { | |
| 141 const JavaVMOption* option = args->options + index; | |
| 142 const char* tail; | |
| 143 | |
| 144 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 145 process_java_launcher_argument(tail, option->extraInfo); | |
| 146 continue; | |
| 147 } | |
| 148 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 149 _sun_java_launcher_pid = atoi(tail); | |
| 150 continue; | |
| 151 } | |
| 152 } | |
| 153 } | |
| 154 | |
| 155 // Initialize system properties key and value. | |
| 156 void Arguments::init_system_properties() { | |
| 157 | |
| 158 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 159 "Java Virtual Machine Specification", false)); | |
| 160 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 161 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 162 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 163 | |
| 164 // following are JVMTI agent writeable properties. | |
| 165 // Properties values are set to NULL and they are | |
| 166 // os specific they are initialized in os::init_system_properties_values(). | |
| 167 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 168 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 169 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 170 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 171 _java_home = new SystemProperty("java.home", NULL, true); | |
| 172 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
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173 _compiler_class_path = new SystemProperty("compiler.class.path", NULL, true); |
| 0 | 174 |
| 175 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 176 | |
| 177 // Add to System Property list. | |
| 178 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 179 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 180 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 181 PropertyList_add(&_system_properties, _java_library_path); | |
| 182 PropertyList_add(&_system_properties, _java_home); | |
| 183 PropertyList_add(&_system_properties, _java_class_path); | |
| 184 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
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185 PropertyList_add(&_system_properties, _compiler_class_path); |
| 0 | 186 |
| 187 // Set OS specific system properties values | |
| 188 os::init_system_properties_values(); | |
| 189 } | |
| 190 | |
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191 |
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192 // Update/Initialize System properties after JDK version number is known |
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193 void Arguments::init_version_specific_system_properties() { |
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194 enum { bufsz = 16 }; |
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195 char buffer[bufsz]; |
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196 const char* spec_vendor = "Sun Microsystems Inc."; |
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197 uint32_t spec_version = 0; |
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198 |
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199 if (JDK_Version::is_gte_jdk17x_version()) { |
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200 spec_vendor = "Oracle Corporation"; |
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201 spec_version = JDK_Version::current().major_version(); |
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202 } |
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203 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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204 |
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205 PropertyList_add(&_system_properties, |
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206 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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207 PropertyList_add(&_system_properties, |
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208 new SystemProperty("java.vm.specification.version", buffer, false)); |
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209 PropertyList_add(&_system_properties, |
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210 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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211 } |
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212 |
| 242 | 213 /** |
| 214 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 215 * When a flag is eliminated, it can be added to this list in order to | |
| 216 * continue accepting this flag on the command-line, while issuing a warning | |
| 217 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 218 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 219 * a flag to die correctly over JDK releases using HSX. | |
| 220 */ | |
| 221 typedef struct { | |
| 222 const char* name; | |
| 223 JDK_Version obsoleted_in; // when the flag went away | |
| 224 JDK_Version accept_until; // which version to start denying the existence | |
| 225 } ObsoleteFlag; | |
| 0 | 226 |
| 242 | 227 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 228 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 229 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 230 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 231 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 232 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 233 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 234 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 235 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 236 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 237 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 238 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 239 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 240 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 241 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 1064 | 242 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
| 243 { "DefaultInitialRAMFraction", | |
| 244 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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245 { "UseDepthFirstScavengeOrder", |
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246 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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247 { "HandlePromotionFailure", |
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248 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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249 { "MaxLiveObjectEvacuationRatio", |
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250 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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251 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
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252 { "UseParallelOldGCCompacting", |
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253 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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254 { "UseParallelDensePrefixUpdate", |
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255 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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256 { "UseParallelOldGCDensePrefix", |
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257 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
| 2460 | 258 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
| 242 | 259 { NULL, JDK_Version(0), JDK_Version(0) } |
| 260 }; | |
| 261 | |
| 262 // Returns true if the flag is obsolete and fits into the range specified | |
| 263 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 264 // value is filled in with the version number when the flag became | |
| 265 // obsolete so that that value can be displayed to the user. | |
| 266 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 267 int i = 0; |
| 242 | 268 assert(version != NULL, "Must provide a version buffer"); |
| 269 while (obsolete_jvm_flags[i].name != NULL) { | |
| 270 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 271 // <flag>=xxx form |
| 272 // [-|+]<flag> form | |
| 242 | 273 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 274 ((s[0] == '+' || s[0] == '-') && |
| 242 | 275 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 276 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 277 *version = flag_status.obsoleted_in; | |
| 278 return true; | |
| 279 } | |
| 0 | 280 } |
| 281 i++; | |
| 282 } | |
| 283 return false; | |
| 284 } | |
| 285 | |
| 286 // Constructs the system class path (aka boot class path) from the following | |
| 287 // components, in order: | |
| 288 // | |
| 289 // prefix // from -Xbootclasspath/p:... | |
| 290 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 291 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 292 // suffix // from -Xbootclasspath/a:... | |
| 293 // | |
| 294 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 295 // directories are added to the sysclasspath just before the base. | |
| 296 // | |
| 297 // This could be AllStatic, but it isn't needed after argument processing is | |
| 298 // complete. | |
| 299 class SysClassPath: public StackObj { | |
| 300 public: | |
| 301 SysClassPath(const char* base); | |
| 302 ~SysClassPath(); | |
| 303 | |
| 304 inline void set_base(const char* base); | |
| 305 inline void add_prefix(const char* prefix); | |
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306 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 307 inline void add_suffix(const char* suffix); |
| 308 inline void reset_path(const char* base); | |
| 309 | |
| 310 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 311 // property. Must be called after all command-line arguments have been | |
| 312 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 313 // combined_path(). | |
| 314 void expand_endorsed(); | |
| 315 | |
| 316 inline const char* get_base() const { return _items[_scp_base]; } | |
| 317 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 318 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 319 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 320 | |
| 321 // Combine all the components into a single c-heap-allocated string; caller | |
| 322 // must free the string if/when no longer needed. | |
| 323 char* combined_path(); | |
| 324 | |
| 325 private: | |
| 326 // Utility routines. | |
| 327 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 328 static char* add_jars_to_path(char* path, const char* directory); | |
| 329 | |
| 330 inline void reset_item_at(int index); | |
| 331 | |
| 332 // Array indices for the items that make up the sysclasspath. All except the | |
| 333 // base are allocated in the C heap and freed by this class. | |
| 334 enum { | |
| 335 _scp_prefix, // from -Xbootclasspath/p:... | |
| 336 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 337 _scp_base, // the default sysclasspath | |
| 338 _scp_suffix, // from -Xbootclasspath/a:... | |
| 339 _scp_nitems // the number of items, must be last. | |
| 340 }; | |
| 341 | |
| 342 const char* _items[_scp_nitems]; | |
| 343 DEBUG_ONLY(bool _expansion_done;) | |
| 344 }; | |
| 345 | |
| 346 SysClassPath::SysClassPath(const char* base) { | |
| 347 memset(_items, 0, sizeof(_items)); | |
| 348 _items[_scp_base] = base; | |
| 349 DEBUG_ONLY(_expansion_done = false;) | |
| 350 } | |
| 351 | |
| 352 SysClassPath::~SysClassPath() { | |
| 353 // Free everything except the base. | |
| 354 for (int i = 0; i < _scp_nitems; ++i) { | |
| 355 if (i != _scp_base) reset_item_at(i); | |
| 356 } | |
| 357 DEBUG_ONLY(_expansion_done = false;) | |
| 358 } | |
| 359 | |
| 360 inline void SysClassPath::set_base(const char* base) { | |
| 361 _items[_scp_base] = base; | |
| 362 } | |
| 363 | |
| 364 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 365 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 366 } | |
| 367 | |
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368 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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369 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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370 } |
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371 |
| 0 | 372 inline void SysClassPath::add_suffix(const char* suffix) { |
| 373 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 374 } | |
| 375 | |
| 376 inline void SysClassPath::reset_item_at(int index) { | |
| 377 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 378 if (_items[index] != NULL) { | |
| 379 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 380 _items[index] = NULL; | |
| 381 } | |
| 382 } | |
| 383 | |
| 384 inline void SysClassPath::reset_path(const char* base) { | |
| 385 // Clear the prefix and suffix. | |
| 386 reset_item_at(_scp_prefix); | |
| 387 reset_item_at(_scp_suffix); | |
| 388 set_base(base); | |
| 389 } | |
| 390 | |
| 391 //------------------------------------------------------------------------------ | |
| 392 | |
| 393 void SysClassPath::expand_endorsed() { | |
| 394 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 395 | |
| 396 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 397 if (path == NULL) { | |
| 398 path = Arguments::get_endorsed_dir(); | |
| 399 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 400 } | |
| 401 | |
| 402 char* expanded_path = NULL; | |
| 403 const char separator = *os::path_separator(); | |
| 404 const char* const end = path + strlen(path); | |
| 405 while (path < end) { | |
| 406 const char* tmp_end = strchr(path, separator); | |
| 407 if (tmp_end == NULL) { | |
| 408 expanded_path = add_jars_to_path(expanded_path, path); | |
| 409 path = end; | |
| 410 } else { | |
| 411 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 412 memcpy(dirpath, path, tmp_end - path); | |
| 413 dirpath[tmp_end - path] = '\0'; | |
| 414 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 415 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 416 path = tmp_end + 1; | |
| 417 } | |
| 418 } | |
| 419 _items[_scp_endorsed] = expanded_path; | |
| 420 DEBUG_ONLY(_expansion_done = true;) | |
| 421 } | |
| 422 | |
| 423 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 424 // c-heap-allocated string. | |
| 425 char* SysClassPath::combined_path() { | |
| 426 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 427 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 428 | |
| 429 size_t lengths[_scp_nitems]; | |
| 430 size_t total_len = 0; | |
| 431 | |
| 432 const char separator = *os::path_separator(); | |
| 433 | |
| 434 // Get the lengths. | |
| 435 int i; | |
| 436 for (i = 0; i < _scp_nitems; ++i) { | |
| 437 if (_items[i] != NULL) { | |
| 438 lengths[i] = strlen(_items[i]); | |
| 439 // Include space for the separator char (or a NULL for the last item). | |
| 440 total_len += lengths[i] + 1; | |
| 441 } | |
| 442 } | |
| 443 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 444 | |
| 445 // Copy the _items to a single string. | |
| 446 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 447 char* cp_tmp = cp; | |
| 448 for (i = 0; i < _scp_nitems; ++i) { | |
| 449 if (_items[i] != NULL) { | |
| 450 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 451 cp_tmp += lengths[i]; | |
| 452 *cp_tmp++ = separator; | |
| 453 } | |
| 454 } | |
| 455 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 456 return cp; | |
| 457 } | |
| 458 | |
| 459 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 460 char* | |
| 461 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 462 char *cp; | |
| 463 | |
| 464 assert(str != NULL, "just checking"); | |
| 465 if (path == NULL) { | |
| 466 size_t len = strlen(str) + 1; | |
| 467 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 468 memcpy(cp, str, len); // copy the trailing null | |
| 469 } else { | |
| 470 const char separator = *os::path_separator(); | |
| 471 size_t old_len = strlen(path); | |
| 472 size_t str_len = strlen(str); | |
| 473 size_t len = old_len + str_len + 2; | |
| 474 | |
| 475 if (prepend) { | |
| 476 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 477 char* cp_tmp = cp; | |
| 478 memcpy(cp_tmp, str, str_len); | |
| 479 cp_tmp += str_len; | |
| 480 *cp_tmp = separator; | |
| 481 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 482 FREE_C_HEAP_ARRAY(char, path); | |
| 483 } else { | |
| 484 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 485 char* cp_tmp = cp + old_len; | |
| 486 *cp_tmp = separator; | |
| 487 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 488 } | |
| 489 } | |
| 490 return cp; | |
| 491 } | |
| 492 | |
| 493 // Scan the directory and append any jar or zip files found to path. | |
| 494 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 495 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 496 DIR* dir = os::opendir(directory); | |
| 497 if (dir == NULL) return path; | |
| 498 | |
| 499 char dir_sep[2] = { '\0', '\0' }; | |
| 500 size_t directory_len = strlen(directory); | |
| 501 const char fileSep = *os::file_separator(); | |
| 502 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 503 | |
| 504 /* Scan the directory for jars/zips, appending them to path. */ | |
| 505 struct dirent *entry; | |
| 506 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 507 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 508 const char* name = entry->d_name; | |
| 509 const char* ext = name + strlen(name) - 4; | |
| 510 bool isJarOrZip = ext > name && | |
| 511 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 512 os::file_name_strcmp(ext, ".zip") == 0); | |
| 513 if (isJarOrZip) { | |
| 514 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 515 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 516 path = add_to_path(path, jarpath, false); | |
| 517 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 518 } | |
| 519 } | |
| 520 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 521 os::closedir(dir); | |
| 522 return path; | |
| 523 } | |
| 524 | |
| 525 // Parses a memory size specification string. | |
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526 static bool atomull(const char *s, julong* result) { |
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527 julong n = 0; |
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528 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 529 if (args_read != 1) { |
| 530 return false; | |
| 531 } | |
| 532 while (*s != '\0' && isdigit(*s)) { | |
| 533 s++; | |
| 534 } | |
| 535 // 4705540: illegal if more characters are found after the first non-digit | |
| 536 if (strlen(s) > 1) { | |
| 537 return false; | |
| 538 } | |
| 539 switch (*s) { | |
| 540 case 'T': case 't': | |
| 541 *result = n * G * K; | |
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542 // Check for overflow. |
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543 if (*result/((julong)G * K) != n) return false; |
| 0 | 544 return true; |
| 545 case 'G': case 'g': | |
| 546 *result = n * G; | |
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547 if (*result/G != n) return false; |
| 0 | 548 return true; |
| 549 case 'M': case 'm': | |
| 550 *result = n * M; | |
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551 if (*result/M != n) return false; |
| 0 | 552 return true; |
| 553 case 'K': case 'k': | |
| 554 *result = n * K; | |
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555 if (*result/K != n) return false; |
| 0 | 556 return true; |
| 557 case '\0': | |
| 558 *result = n; | |
| 559 return true; | |
| 560 default: | |
| 561 return false; | |
| 562 } | |
| 563 } | |
| 564 | |
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565 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 566 if (size < min_size) return arg_too_small; |
| 567 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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568 if (size > max_uintx) return arg_too_big; |
| 0 | 569 return arg_in_range; |
| 570 } | |
| 571 | |
| 572 // Describe an argument out of range error | |
| 573 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 574 switch(errcode) { | |
| 575 case arg_too_big: | |
| 576 jio_fprintf(defaultStream::error_stream(), | |
| 577 "The specified size exceeds the maximum " | |
| 578 "representable size.\n"); | |
| 579 break; | |
| 580 case arg_too_small: | |
| 581 case arg_unreadable: | |
| 582 case arg_in_range: | |
| 583 // do nothing for now | |
| 584 break; | |
| 585 default: | |
| 586 ShouldNotReachHere(); | |
| 587 } | |
| 588 } | |
| 589 | |
| 590 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 591 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 592 } | |
| 593 | |
| 594 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 595 double v; | |
| 596 if (sscanf(value, "%lf", &v) != 1) { | |
| 597 return false; | |
| 598 } | |
| 599 | |
| 600 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 601 return true; | |
| 602 } | |
| 603 return false; | |
| 604 } | |
| 605 | |
| 606 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
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607 julong v; |
| 0 | 608 intx intx_v; |
| 609 bool is_neg = false; | |
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610 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 611 if (*value == '-') { |
| 612 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 613 return false; | |
| 614 } | |
| 615 value++; | |
| 616 is_neg = true; | |
| 617 } | |
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618 if (!atomull(value, &v)) { |
| 0 | 619 return false; |
| 620 } | |
| 621 intx_v = (intx) v; | |
| 622 if (is_neg) { | |
| 623 intx_v = -intx_v; | |
| 624 } | |
| 625 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 626 return true; | |
| 627 } | |
| 628 uintx uintx_v = (uintx) v; | |
| 629 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 630 return true; | |
| 631 } | |
| 1064 | 632 uint64_t uint64_t_v = (uint64_t) v; |
| 633 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
| 634 return true; | |
| 635 } | |
| 0 | 636 return false; |
| 637 } | |
| 638 | |
| 639 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 640 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 641 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 642 FREE_C_HEAP_ARRAY(char, value); | |
| 643 return true; | |
| 644 } | |
| 645 | |
| 646 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 647 const char* old_value = ""; | |
| 648 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 649 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 650 size_t new_len = strlen(new_value); | |
| 651 const char* value; | |
| 652 char* free_this_too = NULL; | |
| 653 if (old_len == 0) { | |
| 654 value = new_value; | |
| 655 } else if (new_len == 0) { | |
| 656 value = old_value; | |
| 657 } else { | |
| 658 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 659 // each new setting adds another LINE to the switch: | |
| 660 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 661 value = buf; | |
| 662 free_this_too = buf; | |
| 663 } | |
| 664 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 665 // CommandLineFlags always returns a pointer that needs freeing. | |
| 666 FREE_C_HEAP_ARRAY(char, value); | |
| 667 if (free_this_too != NULL) { | |
| 668 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 669 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 670 } | |
| 671 return true; | |
| 672 } | |
| 673 | |
| 674 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 675 | |
| 676 // range of acceptable characters spelled out for portability reasons | |
| 677 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 678 #define BUFLEN 255 | |
| 679 char name[BUFLEN+1]; | |
| 680 char dummy; | |
| 681 | |
| 682 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 683 return set_bool_flag(name, false, origin); | |
| 684 } | |
| 685 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 686 return set_bool_flag(name, true, origin); | |
| 687 } | |
| 688 | |
| 689 char punct; | |
| 690 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 691 const char* value = strchr(arg, '=') + 1; | |
| 692 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 693 if (flag != NULL && flag->is_ccstr()) { | |
| 694 if (flag->ccstr_accumulates()) { | |
| 695 return append_to_string_flag(name, value, origin); | |
| 696 } else { | |
| 697 if (value[0] == '\0') { | |
| 698 value = NULL; | |
| 699 } | |
| 700 return set_string_flag(name, value, origin); | |
| 701 } | |
| 702 } | |
| 703 } | |
| 704 | |
| 705 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 706 const char* value = strchr(arg, '=') + 1; | |
| 707 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 708 if (value[0] == '\0') { | |
| 709 value = NULL; | |
| 710 } | |
| 711 return set_string_flag(name, value, origin); | |
| 712 } | |
| 713 | |
| 714 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 715 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 716 #define NUMBER_RANGE "[0123456789]" | |
| 717 char value[BUFLEN + 1]; | |
| 718 char value2[BUFLEN + 1]; | |
| 719 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 720 // Looks like a floating-point number -- try again with more lenient format string | |
| 721 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 722 return set_fp_numeric_flag(name, value, origin); | |
| 723 } | |
| 724 } | |
| 725 | |
| 726 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 727 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 728 return set_numeric_flag(name, value, origin); | |
| 729 } | |
| 730 | |
| 731 return false; | |
| 732 } | |
| 733 | |
| 734 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 735 assert(bldarray != NULL, "illegal argument"); | |
| 736 | |
| 737 if (arg == NULL) { | |
| 738 return; | |
| 739 } | |
| 740 | |
| 741 int index = *count; | |
| 742 | |
| 743 // expand the array and add arg to the last element | |
| 744 (*count)++; | |
| 745 if (*bldarray == NULL) { | |
| 746 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 747 } else { | |
| 748 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 749 } | |
| 750 (*bldarray)[index] = strdup(arg); | |
| 751 } | |
| 752 | |
| 753 void Arguments::build_jvm_args(const char* arg) { | |
| 754 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 755 } | |
| 756 | |
| 757 void Arguments::build_jvm_flags(const char* arg) { | |
| 758 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 759 } | |
| 760 | |
|
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761 void Arguments::add_graal_arg(const char* arg) { |
|
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|
762 add_string(&_graal_args_array, &_num_graal_args, arg); |
|
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|
763 } |
|
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|
764 |
| 0 | 765 // utility function to return a string that concatenates all |
| 766 // strings in a given char** array | |
| 767 const char* Arguments::build_resource_string(char** args, int count) { | |
| 768 if (args == NULL || count == 0) { | |
| 769 return NULL; | |
| 770 } | |
| 771 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 772 for (int i = 1; i < count; i++) { | |
| 773 length += strlen(args[i]) + 1; // add 1 for a space | |
| 774 } | |
| 775 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 776 strcpy(s, args[0]); | |
| 777 for (int j = 1; j < count; j++) { | |
| 778 strcat(s, " "); | |
| 779 strcat(s, args[j]); | |
| 780 } | |
| 781 return (const char*) s; | |
| 782 } | |
| 783 | |
| 784 void Arguments::print_on(outputStream* st) { | |
| 785 st->print_cr("VM Arguments:"); | |
| 786 if (num_jvm_flags() > 0) { | |
| 787 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 788 } | |
| 789 if (num_jvm_args() > 0) { | |
| 790 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 791 } | |
| 792 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 793 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 794 } | |
| 795 | |
| 796 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 797 if (_num_jvm_flags > 0) { | |
| 798 for (int i=0; i < _num_jvm_flags; i++) { | |
| 799 st->print("%s ", _jvm_flags_array[i]); | |
| 800 } | |
| 801 st->print_cr(""); | |
| 802 } | |
| 803 } | |
| 804 | |
| 805 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 806 if (_num_jvm_args > 0) { | |
| 807 for (int i=0; i < _num_jvm_args; i++) { | |
| 808 st->print("%s ", _jvm_args_array[i]); | |
| 809 } | |
| 810 st->print_cr(""); | |
| 811 } | |
| 812 } | |
| 813 | |
| 242 | 814 bool Arguments::process_argument(const char* arg, |
| 815 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 816 | |
| 817 JDK_Version since = JDK_Version(); | |
| 0 | 818 |
| 3250 | 819 if (parse_argument(arg, origin) || ignore_unrecognized) { |
| 820 return true; | |
| 0 | 821 } |
| 3250 | 822 |
| 823 const char * const argname = *arg == '+' || *arg == '-' ? arg + 1 : arg; | |
| 824 if (is_newly_obsolete(arg, &since)) { | |
| 825 char version[256]; | |
| 826 since.to_string(version, sizeof(version)); | |
| 827 warning("ignoring option %s; support was removed in %s", argname, version); | |
| 828 return true; | |
| 829 } | |
| 830 | |
| 831 jio_fprintf(defaultStream::error_stream(), | |
| 832 "Unrecognized VM option '%s'\n", argname); | |
| 833 // allow for commandline "commenting out" options like -XX:#+Verbose | |
| 834 return arg[0] == '#'; | |
| 0 | 835 } |
| 836 | |
| 837 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 838 FILE* stream = fopen(file_name, "rb"); | |
| 839 if (stream == NULL) { | |
| 840 if (should_exist) { | |
| 841 jio_fprintf(defaultStream::error_stream(), | |
| 842 "Could not open settings file %s\n", file_name); | |
| 843 return false; | |
| 844 } else { | |
| 845 return true; | |
| 846 } | |
| 847 } | |
| 848 | |
| 849 char token[1024]; | |
| 850 int pos = 0; | |
| 851 | |
| 852 bool in_white_space = true; | |
| 853 bool in_comment = false; | |
| 854 bool in_quote = false; | |
| 855 char quote_c = 0; | |
| 856 bool result = true; | |
| 857 | |
| 858 int c = getc(stream); | |
| 859 while(c != EOF) { | |
| 860 if (in_white_space) { | |
| 861 if (in_comment) { | |
| 862 if (c == '\n') in_comment = false; | |
| 863 } else { | |
| 864 if (c == '#') in_comment = true; | |
| 865 else if (!isspace(c)) { | |
| 866 in_white_space = false; | |
| 867 token[pos++] = c; | |
| 868 } | |
| 869 } | |
| 870 } else { | |
| 871 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 872 // token ends at newline, or at unquoted whitespace | |
| 873 // this allows a way to include spaces in string-valued options | |
| 874 token[pos] = '\0'; | |
| 875 logOption(token); | |
| 876 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 877 build_jvm_flags(token); | |
| 878 pos = 0; | |
| 879 in_white_space = true; | |
| 880 in_quote = false; | |
| 881 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 882 in_quote = true; | |
| 883 quote_c = c; | |
| 884 } else if (in_quote && (c == quote_c)) { | |
| 885 in_quote = false; | |
| 886 } else { | |
| 887 token[pos++] = c; | |
| 888 } | |
| 889 } | |
| 890 c = getc(stream); | |
| 891 } | |
| 892 if (pos > 0) { | |
| 893 token[pos] = '\0'; | |
| 894 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 895 build_jvm_flags(token); | |
| 896 } | |
| 897 fclose(stream); | |
| 898 return result; | |
| 899 } | |
| 900 | |
| 901 //============================================================================================================= | |
| 902 // Parsing of properties (-D) | |
| 903 | |
| 904 const char* Arguments::get_property(const char* key) { | |
| 905 return PropertyList_get_value(system_properties(), key); | |
| 906 } | |
| 907 | |
| 908 bool Arguments::add_property(const char* prop) { | |
| 909 const char* eq = strchr(prop, '='); | |
| 910 char* key; | |
| 911 // ns must be static--its address may be stored in a SystemProperty object. | |
| 912 const static char ns[1] = {0}; | |
| 913 char* value = (char *)ns; | |
| 914 | |
| 915 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 916 key = AllocateHeap(key_len + 1, "add_property"); | |
| 917 strncpy(key, prop, key_len); | |
| 918 key[key_len] = '\0'; | |
| 919 | |
| 920 if (eq != NULL) { | |
| 921 size_t value_len = strlen(prop) - key_len - 1; | |
| 922 value = AllocateHeap(value_len + 1, "add_property"); | |
| 923 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 924 } | |
| 925 | |
| 926 if (strcmp(key, "java.compiler") == 0) { | |
| 927 process_java_compiler_argument(value); | |
| 928 FreeHeap(key); | |
| 929 if (eq != NULL) { | |
| 930 FreeHeap(value); | |
| 931 } | |
| 932 return true; | |
| 691 | 933 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 934 _java_command = value; |
| 935 | |
|
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|
936 // Record value in Arguments, but let it get passed to Java. |
| 691 | 937 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 938 // launcher.pid property is private and is processed |
| 939 // in process_sun_java_launcher_properties(); | |
| 940 // the sun.java.launcher property is passed on to the java application | |
| 941 FreeHeap(key); | |
| 942 if (eq != NULL) { | |
| 943 FreeHeap(value); | |
| 944 } | |
| 945 return true; | |
| 691 | 946 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 947 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 948 // its value without going through the property list or making a Java call. | |
| 949 _java_vendor_url_bug = value; | |
| 691 | 950 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 951 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 952 return true; | |
| 0 | 953 } |
| 954 // Create new property and add at the end of the list | |
| 955 PropertyList_unique_add(&_system_properties, key, value); | |
| 956 return true; | |
| 957 } | |
| 958 | |
| 959 //=========================================================================================================== | |
| 960 // Setting int/mixed/comp mode flags | |
| 961 | |
| 962 void Arguments::set_mode_flags(Mode mode) { | |
| 963 // Set up default values for all flags. | |
| 964 // If you add a flag to any of the branches below, | |
| 965 // add a default value for it here. | |
| 966 set_java_compiler(false); | |
| 967 _mode = mode; | |
| 968 | |
| 969 // Ensure Agent_OnLoad has the correct initial values. | |
| 970 // This may not be the final mode; mode may change later in onload phase. | |
| 971 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
|
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972 (char*)VM_Version::vm_info_string(), false); |
| 0 | 973 |
| 974 UseInterpreter = true; | |
| 975 UseCompiler = true; | |
| 976 UseLoopCounter = true; | |
| 977 | |
|
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978 #ifndef ZERO |
|
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979 // Turn these off for mixed and comp. Leave them on for Zero. |
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980 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
|
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981 UseFastAccessorMethods = (mode == _int); |
|
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|
982 } |
|
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|
983 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
|
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984 UseFastEmptyMethods = (mode == _int); |
|
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985 } |
|
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|
986 #endif |
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|
987 |
| 0 | 988 // Default values may be platform/compiler dependent - |
| 989 // use the saved values | |
| 990 ClipInlining = Arguments::_ClipInlining; | |
| 991 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 992 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 993 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 994 | |
| 995 // Change from defaults based on mode | |
| 996 switch (mode) { | |
| 997 default: | |
| 998 ShouldNotReachHere(); | |
| 999 break; | |
| 1000 case _int: | |
| 1001 UseCompiler = false; | |
| 1002 UseLoopCounter = false; | |
| 1003 AlwaysCompileLoopMethods = false; | |
| 1004 UseOnStackReplacement = false; | |
| 1005 break; | |
| 1006 case _mixed: | |
| 1007 // same as default | |
| 1008 break; | |
| 1009 case _comp: | |
| 1010 UseInterpreter = false; | |
| 1011 BackgroundCompilation = false; | |
| 1012 ClipInlining = false; | |
| 1013 break; | |
| 1014 } | |
| 1015 } | |
| 1016 | |
| 1017 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 1018 // incompatible command line options were chosen. | |
| 1019 | |
| 1020 static void no_shared_spaces() { | |
| 1021 if (RequireSharedSpaces) { | |
| 1022 jio_fprintf(defaultStream::error_stream(), | |
| 1023 "Class data sharing is inconsistent with other specified options.\n"); | |
| 1024 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 1025 } else { | |
| 1026 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 1027 } | |
| 1028 } | |
| 1029 | |
| 1783 | 1030 void Arguments::set_tiered_flags() { |
|
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1031 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
| 1783 | 1032 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
|
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|
1033 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
| 1783 | 1034 } |
| 1035 if (CompilationPolicyChoice < 2) { | |
| 1036 vm_exit_during_initialization( | |
| 1037 "Incompatible compilation policy selected", NULL); | |
| 1038 } | |
|
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|
1039 // Increase the code cache size - tiered compiles a lot more. |
| 1783 | 1040 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
| 1041 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
| 1042 } | |
| 1043 } | |
| 1044 | |
|
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|
1045 #ifndef KERNEL |
| 0 | 1046 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
| 1047 // if it's not explictly set or unset. If the user has chosen | |
| 1048 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 1049 // set it, unless this is a single cpu machine. | |
| 1050 void Arguments::set_parnew_gc_flags() { | |
| 1064 | 1051 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
|
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1052 "control point invariant"); |
|
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1053 assert(UseParNewGC, "Error"); |
| 0 | 1054 |
|
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1055 // Turn off AdaptiveSizePolicy by default for parnew until it is |
|
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1056 // complete. |
|
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1057 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
|
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1058 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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1059 } |
|
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1060 |
|
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1061 if (ParallelGCThreads == 0) { |
|
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1062 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1063 Abstract_VM_Version::parallel_worker_threads()); |
| 1064 | 1064 if (ParallelGCThreads == 1) { |
| 0 | 1065 FLAG_SET_DEFAULT(UseParNewGC, false); |
| 1064 | 1066 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
| 0 | 1067 } |
| 1068 } | |
| 1064 | 1069 if (UseParNewGC) { |
| 1070 // CDS doesn't work with ParNew yet | |
| 0 | 1071 no_shared_spaces(); |
| 1072 | |
| 695 | 1073 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
| 0 | 1074 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
| 1075 // we set them to 1024 and 1024. | |
| 1076 // See CR 6362902. | |
| 1077 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 1078 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 1079 } | |
| 1080 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1081 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 1082 } | |
| 1083 | |
| 1064 | 1084 // AlwaysTenure flag should make ParNew promote all at first collection. |
| 0 | 1085 // See CR 6362902. |
| 1086 if (AlwaysTenure) { | |
| 1087 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 1088 } | |
| 695 | 1089 // When using compressed oops, we use local overflow stacks, |
| 1090 // rather than using a global overflow list chained through | |
| 1091 // the klass word of the object's pre-image. | |
| 1092 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
| 1093 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
| 1094 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
| 1095 } | |
| 1096 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
| 1097 } | |
| 1098 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
| 0 | 1099 } |
| 1100 } | |
| 1101 | |
| 1102 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1103 // sparc/solaris for certain applications, but would gain from | |
| 1104 // further optimization and tuning efforts, and would almost | |
| 1105 // certainly gain from analysis of platform and environment. | |
| 1106 void Arguments::set_cms_and_parnew_gc_flags() { | |
| 1064 | 1107 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
|
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1108 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1109 |
| 0 | 1110 // If we are using CMS, we prefer to UseParNewGC, |
| 1111 // unless explicitly forbidden. | |
|
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1112 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
|
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1113 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1114 } |
| 1115 | |
| 1116 // Turn off AdaptiveSizePolicy by default for cms until it is | |
|
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1117 // complete. |
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1118 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
| 0 | 1119 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
| 1120 } | |
| 1121 | |
| 1122 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1123 // as needed. | |
|
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1124 if (UseParNewGC) { |
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1125 set_parnew_gc_flags(); |
| 0 | 1126 } |
| 1127 | |
|
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1128 // MaxHeapSize is aligned down in collectorPolicy |
|
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1129 size_t max_heap = align_size_down(MaxHeapSize, |
|
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1130 CardTableRS::ct_max_alignment_constraint()); |
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1131 |
| 0 | 1132 // Now make adjustments for CMS |
|
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1133 intx tenuring_default = (intx)6; |
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1134 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1135 |
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1136 // Preferred young gen size for "short" pauses: |
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1137 // upper bound depends on # of threads and NewRatio. |
| 0 | 1138 const uintx parallel_gc_threads = |
| 1139 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1140 const size_t preferred_max_new_size_unaligned = | |
|
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1141 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1142 size_t preferred_max_new_size = |
| 0 | 1143 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
| 1144 | |
| 1145 // Unless explicitly requested otherwise, size young gen | |
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1146 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
|
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1147 |
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1148 // If either MaxNewSize or NewRatio is set on the command line, |
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1149 // assume the user is trying to set the size of the young gen. |
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1150 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1151 |
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1152 // Set MaxNewSize to our calculated preferred_max_new_size unless |
|
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1153 // NewSize was set on the command line and it is larger than |
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1154 // preferred_max_new_size. |
| 0 | 1155 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
|
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1156 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1157 } else { |
|
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1158 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1159 } |
| 1064 | 1160 if (PrintGCDetails && Verbose) { |
|
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1161 // Too early to use gclog_or_tty |
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1162 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
|
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1163 } |
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1164 |
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1165 // Code along this path potentially sets NewSize and OldSize |
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1166 |
|
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1167 assert(max_heap >= InitialHeapSize, "Error"); |
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1168 assert(max_heap >= NewSize, "Error"); |
| 0 | 1169 |
| 1064 | 1170 if (PrintGCDetails && Verbose) { |
|
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1171 // Too early to use gclog_or_tty |
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1172 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1173 " initial_heap_size: " SIZE_FORMAT |
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1174 " max_heap: " SIZE_FORMAT, |
| 1064 | 1175 min_heap_size(), InitialHeapSize, max_heap); |
|
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1176 } |
|
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1177 size_t min_new = preferred_max_new_size; |
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1178 if (FLAG_IS_CMDLINE(NewSize)) { |
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1179 min_new = NewSize; |
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1180 } |
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1181 if (max_heap > min_new && min_heap_size() > min_new) { |
| 0 | 1182 // Unless explicitly requested otherwise, make young gen |
| 1183 // at least min_new, and at most preferred_max_new_size. | |
| 1184 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
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1185 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1186 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
| 1064 | 1187 if (PrintGCDetails && Verbose) { |
|
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1188 // Too early to use gclog_or_tty |
|
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1189 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
|
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1190 } |
| 0 | 1191 } |
| 1192 // Unless explicitly requested otherwise, size old gen | |
|
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1193 // so it's NewRatio x of NewSize. |
| 0 | 1194 if (FLAG_IS_DEFAULT(OldSize)) { |
| 1195 if (max_heap > NewSize) { | |
|
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1196 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
| 1064 | 1197 if (PrintGCDetails && Verbose) { |
|
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1198 // Too early to use gclog_or_tty |
|
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1199 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
|
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1200 } |
| 0 | 1201 } |
| 1202 } | |
| 1203 } | |
| 1204 } | |
| 1205 // Unless explicitly requested otherwise, definitely | |
| 1206 // promote all objects surviving "tenuring_default" scavenges. | |
| 1207 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1208 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
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1209 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1210 } |
| 1211 // If we decided above (or user explicitly requested) | |
| 1212 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1213 // prefer minuscule survivor spaces so as not to waste | |
| 1214 // space for (non-existent) survivors | |
| 1215 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
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1216 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1217 } |
| 1218 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1219 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1220 // This is done in order to make ParNew+CMS configuration to work | |
| 1221 // with YoungPLABSize and OldPLABSize options. | |
| 1222 // See CR 6362902. | |
| 1223 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1224 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
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1225 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
|
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1226 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
|
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1227 // the value (either from the command line or ergonomics) of |
|
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1228 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
|
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1229 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
|
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1230 } else { |
| 0 | 1231 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
| 1232 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1233 // we'll let it to take precedence. | |
| 1234 jio_fprintf(defaultStream::error_stream(), | |
|
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1235 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1236 " options are specified for the CMS collector." |
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1237 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
| 0 | 1238 } |
| 1239 } | |
|
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1240 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
|
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1241 // OldPLAB sizing manually turned off: Use a larger default setting, |
|
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1242 // unless it was manually specified. This is because a too-low value |
|
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1243 // will slow down scavenges. |
|
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1244 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1245 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
|
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1246 } |
|
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1247 } |
|
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1248 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
|
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1249 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
|
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1250 // If either of the static initialization defaults have changed, note this |
|
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1251 // modification. |
|
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1252 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
|
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1253 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
|
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1254 } |
| 1284 | 1255 if (PrintGCDetails && Verbose) { |
| 1256 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1257 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1258 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1259 } | |
| 0 | 1260 } |
|
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1261 #endif // KERNEL |
| 0 | 1262 |
|
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1263 void set_object_alignment() { |
|
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1264 // Object alignment. |
|
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1265 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
|
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1266 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1267 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
|
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1268 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
|
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1269 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
|
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1270 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
|
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|
1271 |
|
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1272 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
|
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1273 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
|
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1274 |
|
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1275 // Oop encoding heap max |
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1276 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
|
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1277 |
|
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1278 #ifndef KERNEL |
|
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1279 // Set CMS global values |
|
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1280 CompactibleFreeListSpace::set_cms_values(); |
|
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1281 #endif // KERNEL |
|
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1282 } |
|
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1283 |
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1284 bool verify_object_alignment() { |
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1285 // Object alignment. |
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1286 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1287 jio_fprintf(defaultStream::error_stream(), |
|
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1288 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1289 (int)ObjectAlignmentInBytes); |
|
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1290 return false; |
|
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1291 } |
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1292 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1293 jio_fprintf(defaultStream::error_stream(), |
|
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1294 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
|
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1295 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1296 return false; |
|
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1297 } |
|
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1298 // It does not make sense to have big object alignment |
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1299 // since a space lost due to alignment will be greater |
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1300 // then a saved space from compressed oops. |
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1301 if ((int)ObjectAlignmentInBytes > 256) { |
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1302 jio_fprintf(defaultStream::error_stream(), |
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1303 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1304 (int)ObjectAlignmentInBytes); |
|
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1305 return false; |
|
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1306 } |
|
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1307 // In case page size is very small. |
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1308 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1309 jio_fprintf(defaultStream::error_stream(), |
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1310 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1311 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
|
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1312 return false; |
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1313 } |
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1314 return true; |
|
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1315 } |
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1316 |
|
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1317 inline uintx max_heap_for_compressed_oops() { |
| 1963 | 1318 // Avoid sign flip. |
| 1319 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | |
| 1320 return 0; | |
| 1321 } | |
| 1322 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | |
| 1064 | 1323 NOT_LP64(ShouldNotReachHere(); return 0); |
|
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1324 } |
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1325 |
| 0 | 1326 bool Arguments::should_auto_select_low_pause_collector() { |
| 1327 if (UseAutoGCSelectPolicy && | |
| 1328 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1329 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1330 if (PrintGCDetails) { | |
| 1331 // Cannot use gclog_or_tty yet. | |
| 1332 tty->print_cr("Automatic selection of the low pause collector" | |
| 1333 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1334 } | |
| 1335 return true; | |
| 1336 } | |
| 1337 return false; | |
| 1338 } | |
| 1339 | |
| 1340 void Arguments::set_ergonomics_flags() { | |
| 1341 // Parallel GC is not compatible with sharing. If one specifies | |
| 1064 | 1342 // that they want sharing explicitly, do not set ergonomics flags. |
|
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1343 if (DumpSharedSpaces || RequireSharedSpaces) { |
| 0 | 1344 return; |
| 1345 } | |
| 1346 | |
| 1347 if (os::is_server_class_machine() && !force_client_mode ) { | |
| 1348 // If no other collector is requested explicitly, | |
| 1349 // let the VM select the collector based on | |
| 1350 // machine class and automatic selection policy. | |
| 1351 if (!UseSerialGC && | |
| 1352 !UseConcMarkSweepGC && | |
|
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1353 !UseG1GC && |
| 0 | 1354 !UseParNewGC && |
| 1355 !DumpSharedSpaces && | |
| 1356 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1357 if (should_auto_select_low_pause_collector()) { | |
| 1358 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1359 } else { | |
| 1360 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1361 } | |
| 1362 no_shared_spaces(); | |
| 1363 } | |
| 1364 } | |
|
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1365 |
| 1010 | 1366 #ifndef ZERO |
|
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1367 #ifdef _LP64 |
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1368 // Check that UseCompressedOops can be set with the max heap size allocated |
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1369 // by ergonomics. |
| 187 | 1370 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 1783 | 1371 #if !defined(COMPILER1) || defined(TIERED) |
| 2228 | 1372 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 932 | 1373 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
|
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1374 } |
| 1060 | 1375 #endif |
|
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1376 #ifdef _WIN64 |
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1377 if (UseLargePages && UseCompressedOops) { |
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1378 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1379 // mode, when large pages are specified on windows. |
|
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1380 // This flag could be switched ON if narrow oop base address is set to 0, |
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1381 // see code in Universe::initialize_heap(). |
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1382 Universe::set_narrow_oop_use_implicit_null_checks(false); |
|
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1383 } |
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1384 #endif // _WIN64 |
|
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1385 } else { |
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1386 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1387 warning("Max heap size too large for Compressed Oops"); |
|
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1388 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1389 } |
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1390 } |
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1391 // Also checks that certain machines are slower with compressed oops |
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1392 // in vm_version initialization code. |
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1393 #endif // _LP64 |
| 1010 | 1394 #endif // !ZERO |
| 0 | 1395 } |
| 1396 | |
| 1397 void Arguments::set_parallel_gc_flags() { | |
|
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1398 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 0 | 1399 // If parallel old was requested, automatically enable parallel scavenge. |
| 1400 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1401 FLAG_SET_DEFAULT(UseParallelGC, true); | |
| 1402 } | |
| 1403 | |
| 1404 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1405 // of the physical memory, up to a maximum of 1GB. | |
| 1406 if (UseParallelGC) { | |
|
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1407 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
|
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1408 Abstract_VM_Version::parallel_worker_threads()); |
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1409 |
| 0 | 1410 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1411 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1412 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1413 // See CR 6362902 for details. | |
| 1414 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1415 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1416 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1417 } | |
| 1418 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1419 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1420 } | |
| 1421 } | |
| 1422 | |
| 1423 if (UseParallelOldGC) { | |
| 1424 // Par compact uses lower default values since they are treated as | |
|
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1425 // minimums. These are different defaults because of the different |
|
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1426 // interpretation and are not ergonomically set. |
| 0 | 1427 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
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1428 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1429 } |
| 1430 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
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1431 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1432 } |
| 1433 } | |
| 1434 } | |
|
3322
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1435 if (UseNUMA) { |
|
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1436 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
|
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1437 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
|
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1438 } |
|
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1439 } |
| 0 | 1440 } |
| 1441 | |
|
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1442 void Arguments::set_g1_gc_flags() { |
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1443 assert(UseG1GC, "Error"); |
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1444 #ifdef COMPILER1 |
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1445 FastTLABRefill = false; |
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1446 #endif |
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1447 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1448 Abstract_VM_Version::parallel_worker_threads()); |
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1449 if (ParallelGCThreads == 0) { |
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1450 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1451 Abstract_VM_Version::parallel_worker_threads()); |
|
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1452 } |
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1453 no_shared_spaces(); |
| 751 | 1454 |
| 1284 | 1455 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
|
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1456 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
| 1284 | 1457 } |
| 1458 if (PrintGCDetails && Verbose) { | |
| 1459 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1460 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1461 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1462 } | |
| 1356 | 1463 |
| 1464 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
| 1465 // In G1, we want the default GC overhead goal to be higher than | |
| 1466 // say in PS. So we set it here to 10%. Otherwise the heap might | |
| 1467 // be expanded more aggressively than we would like it to. In | |
| 1468 // fact, even 10% seems to not be high enough in some cases | |
| 1469 // (especially small GC stress tests that the main thing they do | |
| 1470 // is allocation). We might consider increase it further. | |
| 1471 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
| 1472 } | |
|
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1473 } |
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1474 |
| 1064 | 1475 void Arguments::set_heap_size() { |
| 1476 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
| 1477 // Deprecated flag | |
| 1478 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
| 1479 } | |
| 1480 | |
| 1481 const julong phys_mem = | |
| 1482 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
| 1483 : (julong)MaxRAM; | |
| 1484 | |
| 1485 // If the maximum heap size has not been set with -Xmx, | |
| 1486 // then set it as fraction of the size of physical memory, | |
| 1487 // respecting the maximum and minimum sizes of the heap. | |
|
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1488 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
| 1064 | 1489 julong reasonable_max = phys_mem / MaxRAMFraction; |
| 1490 | |
| 1491 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
| 1492 // Small physical memory, so use a minimum fraction of it for the heap | |
| 1493 reasonable_max = phys_mem / MinRAMFraction; | |
| 1494 } else { | |
| 1495 // Not-small physical memory, so require a heap at least | |
| 1496 // as large as MaxHeapSize | |
| 1497 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
| 1498 } | |
| 1499 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
| 1500 // Limit the heap size to ErgoHeapSizeLimit | |
| 1501 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
|
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|
1502 } |
| 1064 | 1503 if (UseCompressedOops) { |
| 1504 // Limit the heap size to the maximum possible when using compressed oops | |
| 1963 | 1505 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
| 1506 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
| 1507 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
| 1508 // but it should be not less than default MaxHeapSize. | |
| 1509 max_coop_heap -= HeapBaseMinAddress; | |
| 1510 } | |
| 1511 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
| 1064 | 1512 } |
| 1513 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
| 1514 | |
| 1515 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
| 1516 // An initial heap size was specified on the command line, | |
| 1517 // so be sure that the maximum size is consistent. Done | |
| 1518 // after call to allocatable_physical_memory because that | |
| 1519 // method might reduce the allocation size. | |
| 1520 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
| 1521 } | |
| 1522 | |
|
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|
1523 if (PrintGCDetails && Verbose) { |
|
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|
1524 // Cannot use gclog_or_tty yet. |
| 1064 | 1525 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
|
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|
1526 } |
| 1064 | 1527 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
| 1528 } | |
| 1529 | |
| 1530 // If the initial_heap_size has not been set with InitialHeapSize | |
| 1531 // or -Xms, then set it as fraction of the size of physical memory, | |
| 1532 // respecting the maximum and minimum sizes of the heap. | |
| 1533 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
|
1074
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|
1534 julong reasonable_minimum = (julong)(OldSize + NewSize); |
|
84cb6f20afb3
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|
1535 |
|
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|
1536 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
|
84cb6f20afb3
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|
1537 |
|
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|
1538 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
|
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|
1539 |
| 1064 | 1540 julong reasonable_initial = phys_mem / InitialRAMFraction; |
| 1541 | |
|
1074
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|
1542 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
| 1064 | 1543 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
| 1544 | |
| 1545 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
| 1546 | |
| 1547 if (PrintGCDetails && Verbose) { | |
| 1548 // Cannot use gclog_or_tty yet. | |
| 1549 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
|
1074
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|
1550 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
|
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|
1551 } |
| 1064 | 1552 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
|
1074
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|
1553 set_min_heap_size((uintx)reasonable_minimum); |
|
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|
1554 } |
|
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|
1555 } |
|
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|
1556 |
| 0 | 1557 // This must be called after ergonomics because we want bytecode rewriting |
| 1558 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1559 void Arguments::set_bytecode_flags() { | |
| 1560 // Better not attempt to store into a read-only space. | |
| 1561 if (UseSharedSpaces) { | |
| 1562 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1563 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1564 } | |
| 1565 | |
| 1566 if (!RewriteBytecodes) { | |
| 1567 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1568 } | |
| 1569 } | |
| 1570 | |
| 1571 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1572 void Arguments::set_aggressive_opts_flags() { | |
|
17
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|
1573 #ifdef COMPILER2 |
|
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|
1574 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
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changeset
|
1575 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
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changeset
|
1576 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
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0
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changeset
|
1577 } |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
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changeset
|
1578 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
diff
changeset
|
1579 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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changeset
|
1580 } |
|
ff5961f4c095
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changeset
|
1581 |
|
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0
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changeset
|
1582 // Feed the cache size setting into the JDK |
|
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changeset
|
1583 char buffer[1024]; |
|
513
2328d1d3f8cf
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diff
changeset
|
1584 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
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|
1585 add_property(buffer); |
|
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changeset
|
1586 } |
| 65 | 1587 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
| 1588 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
| 1589 } | |
|
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
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parents:
363
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changeset
|
1590 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
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parents:
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changeset
|
1591 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
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|
1592 } |
| 1622 | 1593 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeStringConcat)) { |
| 1594 FLAG_SET_DEFAULT(OptimizeStringConcat, true); | |
| 1595 } | |
| 1763 | 1596 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeFill)) { |
| 1597 FLAG_SET_DEFAULT(OptimizeFill, true); | |
| 1598 } | |
|
17
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|
1599 #endif |
|
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changeset
|
1600 |
| 0 | 1601 if (AggressiveOpts) { |
| 61 | 1602 // Sample flag setting code |
| 1603 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1604 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1605 // } | |
| 0 | 1606 } |
| 1607 } | |
| 1608 | |
| 1609 //=========================================================================================================== | |
| 1610 // Parsing of java.compiler property | |
| 1611 | |
| 1612 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1613 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1614 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1615 // is also specified. | |
| 1616 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1617 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1618 } | |
| 1619 } | |
| 1620 | |
| 1621 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1622 _sun_java_launcher = strdup(launcher); | |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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2243
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changeset
|
1623 if (strcmp("gamma", _sun_java_launcher) == 0) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
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2243
diff
changeset
|
1624 _created_by_gamma_launcher = true; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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diff
changeset
|
1625 } |
| 0 | 1626 } |
| 1627 | |
| 1628 bool Arguments::created_by_java_launcher() { | |
| 1629 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1630 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1631 } | |
| 1632 | |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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2243
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changeset
|
1633 bool Arguments::created_by_gamma_launcher() { |
|
da091bb67459
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changeset
|
1634 return _created_by_gamma_launcher; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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changeset
|
1635 } |
|
da091bb67459
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diff
changeset
|
1636 |
| 0 | 1637 //=========================================================================================================== |
| 1638 // Parsing of main arguments | |
| 1639 | |
|
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1640 bool Arguments::verify_interval(uintx val, uintx min, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1641 uintx max, const char* name) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1642 // Returns true iff value is in the inclusive interval [min..max] |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1643 // false, otherwise. |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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diff
changeset
|
1644 if (val >= min && val <= max) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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diff
changeset
|
1645 return true; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
changeset
|
1646 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1647 jio_fprintf(defaultStream::error_stream(), |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1648 "%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
|
1649 " and " UINTX_FORMAT "\n", |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1650 name, val, min, max); |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1651 return false; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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parents:
1188
diff
changeset
|
1652 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1653 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1654 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
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2362
diff
changeset
|
1655 // 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
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diff
changeset
|
1656 // false, otherwise. |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
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diff
changeset
|
1657 if (val >= min ) { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
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1681
diff
changeset
|
1658 return true; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
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1681
diff
changeset
|
1659 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1660 jio_fprintf(defaultStream::error_stream(), |
|
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
parents:
2362
diff
changeset
|
1661 "%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
|
1662 name, val, min); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
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1681
diff
changeset
|
1663 return false; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
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1681
diff
changeset
|
1664 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
diff
changeset
|
1665 |
| 0 | 1666 bool Arguments::verify_percentage(uintx value, const char* name) { |
| 1667 if (value <= 100) { | |
| 1668 return true; | |
| 1669 } | |
| 1670 jio_fprintf(defaultStream::error_stream(), | |
| 1671 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1672 name, value); | |
| 1673 return false; | |
| 1674 } | |
| 1675 | |
| 1064 | 1676 static void force_serial_gc() { |
| 0 | 1677 FLAG_SET_DEFAULT(UseSerialGC, true); |
| 1678 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1679 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
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932
diff
changeset
|
1680 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
| 0 | 1681 FLAG_SET_DEFAULT(UseParallelGC, false); |
| 1682 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
342
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|
1683 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1684 } |
| 1685 | |
| 1686 static bool verify_serial_gc_flags() { | |
| 1687 return (UseSerialGC && | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
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932
diff
changeset
|
1688 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
|
342
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|
1689 UseParallelGC || UseParallelOldGC)); |
| 0 | 1690 } |
| 1691 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1692 // Check consistency of GC selection |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1693 bool Arguments::check_gc_consistency() { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1694 bool status = true; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1695 // 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
|
1696 // 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
|
1697 // 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
|
1698 // 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
|
1699 // 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
|
1700 // 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
|
1701 // select conflicting combinations. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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diff
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|
1702 uint i = 0; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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diff
changeset
|
1703 if (UseSerialGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1704 if (UseConcMarkSweepGC || UseParNewGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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0
diff
changeset
|
1705 if (UseParallelGC || UseParallelOldGC) i++; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
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751
diff
changeset
|
1706 if (UseG1GC) i++; |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1707 if (i > 1) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1708 jio_fprintf(defaultStream::error_stream(), |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
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|
1709 "Conflicting collector combinations in option list; " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
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|
1710 "please refer to the release notes for the combinations " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1711 "allowed\n"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1712 status = false; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1713 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1714 |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1715 return status; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
changeset
|
1716 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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0
diff
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|
1717 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1718 // Check stack pages settings |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1719 bool Arguments::check_stack_pages() |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1720 { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
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|
1721 bool status = true; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
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|
1722 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1723 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
|
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
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|
1724 // greater stack shadow pages can't generate instruction to bang stack |
|
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
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1864
diff
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|
1725 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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1681
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|
1726 return status; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1727 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1728 |
| 0 | 1729 // Check the consistency of vm_init_args |
| 1730 bool Arguments::check_vm_args_consistency() { | |
| 1731 // Method for adding checks for flag consistency. | |
| 1732 // The intent is to warn the user of all possible conflicts, | |
| 1733 // before returning an error. | |
| 1734 // Note: Needs platform-dependent factoring. | |
| 1735 bool status = true; | |
| 1736 | |
| 1737 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1738 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1739 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1740 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1741 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1742 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1743 extern void VM_Version_init(); | |
| 1744 VM_Version_init(); | |
| 1745 if (!VM_Version::has_v9()) { | |
| 1746 jio_fprintf(defaultStream::error_stream(), | |
| 1747 "V8 Machine detected, Server requires V9\n"); | |
| 1748 status = false; | |
| 1749 } | |
| 1750 #endif /* COMPILER2 && SPARC */ | |
| 1751 | |
| 1752 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1753 // builds so the cost of stack banging can be measured. | |
| 1754 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1755 if (!UseBoundThreads && !UseStackBanging) { | |
| 1756 jio_fprintf(defaultStream::error_stream(), | |
| 1757 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1758 | |
| 1759 status = false; | |
| 1760 } | |
| 1761 #endif | |
| 1762 | |
| 1763 if (TLABRefillWasteFraction == 0) { | |
| 1764 jio_fprintf(defaultStream::error_stream(), | |
| 1765 "TLABRefillWasteFraction should be a denominator, " | |
| 1766 "not " SIZE_FORMAT "\n", | |
| 1767 TLABRefillWasteFraction); | |
| 1768 status = false; | |
| 1769 } | |
| 1770 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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|
1771 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1772 "AdaptiveSizePolicyWeight"); |
|
10
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6362677: Change parallel GC collector default number of parallel GC threads.
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|
1773 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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|
1774 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
|
28372612af5e
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|
1775 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
|
28372612af5e
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jmasa
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0
diff
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|
1776 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1777 |
| 1778 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1779 jio_fprintf(defaultStream::error_stream(), | |
| 1780 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1781 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1782 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1783 status = false; | |
| 1784 } | |
| 1785 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1786 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1787 | |
| 1788 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1789 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1790 } | |
| 1791 | |
|
483
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diff
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|
1792 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
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449
diff
changeset
|
1793 // Settings to encourage splitting. |
|
0f773163217d
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449
diff
changeset
|
1794 if (!FLAG_IS_CMDLINE(NewRatio)) { |
|
0f773163217d
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diff
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|
1795 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
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diff
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|
1796 } |
|
0f773163217d
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diff
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|
1797 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
0f773163217d
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|
1798 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
|
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449
diff
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|
1799 } |
|
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|
1800 } |
|
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diff
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|
1801 |
|
10
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6362677: Change parallel GC collector default number of parallel GC threads.
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|
1802 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
|
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jmasa
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0
diff
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|
1803 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1804 if (GCTimeLimit == 100) { |
| 1805 // Turn off gc-overhead-limit-exceeded checks | |
| 1806 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1807 } | |
| 1808 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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0
diff
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|
1809 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1810 |
|
10
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jmasa
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|
1811 status = status && check_gc_consistency(); |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1812 status = status && check_stack_pages(); |
| 0 | 1813 |
| 1814 if (_has_alloc_profile) { | |
| 1815 if (UseParallelGC || UseParallelOldGC) { | |
| 1816 jio_fprintf(defaultStream::error_stream(), | |
| 1817 "error: invalid argument combination.\n" | |
| 1818 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1819 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1820 status = false; | |
| 1821 } | |
| 1822 if (UseConcMarkSweepGC) { | |
| 1823 jio_fprintf(defaultStream::error_stream(), | |
| 1824 "error: invalid argument combination.\n" | |
| 1825 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1826 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1827 status = false; | |
| 1828 } | |
| 1829 } | |
| 1830 | |
| 1831 if (CMSIncrementalMode) { | |
| 1832 if (!UseConcMarkSweepGC) { | |
| 1833 jio_fprintf(defaultStream::error_stream(), | |
| 1834 "error: invalid argument combination.\n" | |
| 1835 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1836 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1837 status = false; | |
| 1838 } else { | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
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|
1839 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1840 "CMSIncrementalDutyCycle"); |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
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|
1841 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1842 "CMSIncrementalDutyCycleMin"); |
|
10
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6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
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0
diff
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|
1843 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1844 "CMSIncrementalSafetyFactor"); |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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0
diff
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|
1845 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1846 "CMSIncrementalOffset"); |
|
10
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|
1847 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1848 "CMSExpAvgFactor"); |
| 1849 // If it was not set on the command line, set | |
| 1850 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1851 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1852 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1853 } | |
| 1854 } | |
| 1855 } | |
| 1856 | |
| 1857 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1858 // insists that we hold the requisite locks so that the iteration is | |
| 1859 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1860 // yet have a good way of acquiring and releasing these locks, | |
| 1861 // which are not visible at the CollectedHeap level. We want to | |
| 1862 // be able to acquire these locks and then do the iteration rather | |
| 1863 // than just disable the lock verification. This will be fixed under | |
| 1864 // bug 4788986. | |
| 1865 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1866 if (VerifyGCStartAt == 0) { | |
| 1867 warning("Heap verification at start-up disabled " | |
| 1868 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1869 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1870 } | |
| 1871 if (VerifyBeforeExit) { | |
| 1872 warning("Heap verification at shutdown disabled " | |
| 1873 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1874 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1875 } | |
| 1876 } | |
| 1877 | |
| 1878 // Note: only executed in non-PRODUCT mode | |
| 1879 if (!UseAsyncConcMarkSweepGC && | |
| 1880 (ExplicitGCInvokesConcurrent || | |
| 1881 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1882 jio_fprintf(defaultStream::error_stream(), | |
| 1883 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1884 " with -UseAsyncConcMarkSweepGC"); | |
| 1885 status = false; | |
| 1886 } | |
| 1887 | |
|
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
jwilhelm
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diff
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|
1888 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
|
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
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|
1889 |
|
2174
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|
1890 #ifndef SERIALGC |
|
1283
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|
1891 if (UseG1GC) { |
|
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
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|
1892 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
|
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
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1257
diff
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|
1893 "InitiatingHeapOccupancyPercent"); |
|
2174
234761c55641
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changeset
|
1894 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
|
234761c55641
6608385: G1: need to support parallel reference processing
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2129
diff
changeset
|
1895 "G1RefProcDrainInterval"); |
|
234761c55641
6608385: G1: need to support parallel reference processing
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|
1896 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
|
234761c55641
6608385: G1: need to support parallel reference processing
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2129
diff
changeset
|
1897 "G1ConcMarkStepDurationMillis"); |
|
1283
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
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1257
diff
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|
1898 } |
|
2174
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6608385: G1: need to support parallel reference processing
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2129
diff
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|
1899 #endif |
|
1283
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1257
diff
changeset
|
1900 |
|
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1901 status = status && verify_interval(RefDiscoveryPolicy, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1902 ReferenceProcessor::DiscoveryPolicyMin, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1903 ReferenceProcessor::DiscoveryPolicyMax, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1904 "RefDiscoveryPolicy"); |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1905 |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1906 // Limit the lower bound of this flag to 1 as it is used in a division |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1907 // expression. |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
changeset
|
1908 status = status && verify_interval(TLABWasteTargetPercent, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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1188
diff
changeset
|
1909 1, 100, "TLABWasteTargetPercent"); |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
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1188
diff
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|
1910 |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
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1506
diff
changeset
|
1911 status = status && verify_object_alignment(); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
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1506
diff
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|
1912 |
| 0 | 1913 return status; |
| 1914 } | |
| 1915 | |
| 1916 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1917 const char* option_type) { | |
| 1918 if (ignore) return false; | |
| 1919 | |
| 1920 const char* spacer = " "; | |
| 1921 if (option_type == NULL) { | |
| 1922 option_type = ++spacer; // Set both to the empty string. | |
| 1923 } | |
| 1924 | |
| 1925 if (os::obsolete_option(option)) { | |
| 1926 jio_fprintf(defaultStream::error_stream(), | |
| 1927 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1928 option->optionString); | |
| 1929 return false; | |
| 1930 } else { | |
| 1931 jio_fprintf(defaultStream::error_stream(), | |
| 1932 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 1933 option->optionString); | |
| 1934 return true; | |
| 1935 } | |
| 1936 } | |
| 1937 | |
| 1938 static const char* user_assertion_options[] = { | |
| 1939 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 1940 }; | |
| 1941 | |
| 1942 static const char* system_assertion_options[] = { | |
| 1943 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 1944 }; | |
| 1945 | |
| 1946 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 1947 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 1948 // the option must match exactly. | |
| 1949 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 1950 bool tail_allowed) { | |
| 1951 for (/* empty */; *names != NULL; ++names) { | |
| 1952 if (match_option(option, *names, tail)) { | |
| 1953 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 1954 return true; | |
| 1955 } | |
| 1956 } | |
| 1957 } | |
| 1958 return false; | |
| 1959 } | |
| 1960 | |
| 1284 | 1961 bool Arguments::parse_uintx(const char* value, |
| 1962 uintx* uintx_arg, | |
| 1963 uintx min_size) { | |
| 1964 | |
| 1965 // Check the sign first since atomull() parses only unsigned values. | |
| 1966 bool value_is_positive = !(*value == '-'); | |
| 1967 | |
| 1968 if (value_is_positive) { | |
| 1969 julong n; | |
| 1970 bool good_return = atomull(value, &n); | |
| 1971 if (good_return) { | |
| 1972 bool above_minimum = n >= min_size; | |
| 1973 bool value_is_too_large = n > max_uintx; | |
| 1974 | |
| 1975 if (above_minimum && !value_is_too_large) { | |
| 1976 *uintx_arg = n; | |
| 1977 return true; | |
| 1978 } | |
| 1979 } | |
| 1980 } | |
| 1981 return false; | |
| 1982 } | |
| 1983 | |
| 0 | 1984 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
|
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1985 julong* long_arg, |
|
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1986 julong min_size) { |
|
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1987 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 1988 return check_memory_size(*long_arg, min_size); |
| 1989 } | |
| 1990 | |
| 1991 // Parse JavaVMInitArgs structure | |
| 1992 | |
| 1993 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 1994 // For components of the system classpath. | |
| 1995 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 1996 bool scp_assembly_required = false; | |
| 1997 | |
| 1998 // Save default settings for some mode flags | |
| 1999 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 2000 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 2001 Arguments::_ClipInlining = ClipInlining; | |
| 2002 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 2003 | |
|
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2004 // Setup flags for mixed which is the default |
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2005 set_mode_flags(_mixed); |
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2006 |
| 0 | 2007 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
| 2008 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 2009 if (result != JNI_OK) { | |
| 2010 return result; | |
| 2011 } | |
| 2012 | |
| 2013 // Parse JavaVMInitArgs structure passed in | |
| 2014 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 2015 if (result != JNI_OK) { | |
| 2016 return result; | |
| 2017 } | |
| 2018 | |
|
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2019 if (UseGraal) { |
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2020 if (PrintVMOptions) { |
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2021 tty->print("Running Graal VM... "); |
|
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2022 } |
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2023 const int BUFFER_SIZE = 1024; |
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2024 char maxine_dir[BUFFER_SIZE]; |
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2025 char temp[BUFFER_SIZE]; |
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2026 if (!os::getenv("MAXINE", maxine_dir, sizeof(maxine_dir))) { |
|
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2027 fatal("Must set MAXINE environment variable to a Maxine project directory."); |
|
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2028 } |
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2029 if (PrintVMOptions) tty->print("MAXINE=%s", maxine_dir); |
|
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2030 SysClassPath scp_compiler(Arguments::get_sysclasspath()); |
|
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2031 sprintf(temp, "%s/com.oracle.max.cri/bin", maxine_dir); |
|
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2032 scp_compiler.add_prefix(temp); |
|
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2033 sprintf(temp, "%s/com.oracle.max.base/bin", maxine_dir); |
|
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2034 scp_compiler.add_prefix(temp); |
|
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2035 sprintf(temp, "%s/com.oracle.max.asmdis/bin", maxine_dir); |
|
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2036 scp_compiler.add_prefix(temp); |
|
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2037 sprintf(temp, "%s/com.oracle.max.asm/bin", maxine_dir); |
|
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2038 scp_compiler.add_prefix(temp); |
|
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2039 sprintf(temp, "%s/com.oracle.max.graal.graph/bin", maxine_dir); |
|
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2040 scp_compiler.add_prefix(temp); |
|
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2041 sprintf(temp, "%s/com.oracle.max.graal.compiler/bin", maxine_dir); |
|
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2042 scp_compiler.add_prefix(temp); |
|
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2043 sprintf(temp, "%s/com.oracle.max.graal.nodes/bin", maxine_dir); |
|
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2044 scp_compiler.add_prefix(temp); |
|
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2045 sprintf(temp, "%s/com.oracle.max.graal.extensions/bin", maxine_dir); |
|
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2046 scp_compiler.add_prefix(temp); |
|
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2047 sprintf(temp, "%s/com.oracle.max.graal.runtime/bin", maxine_dir); |
|
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2048 scp_compiler.add_prefix(temp); |
|
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2049 sprintf(temp, "%s/com.oracle.max.graal.graphviz/bin", maxine_dir); |
|
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2050 scp_compiler.add_prefix(temp); |
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2051 scp_compiler.expand_endorsed(); |
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2052 Arguments::set_compilerclasspath(scp_compiler.combined_path()); |
|
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2053 } |
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2054 |
|
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2055 if (AggressiveOpts) { |
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2056 // Insert alt-rt.jar between user-specified bootclasspath |
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2057 // prefix and the default bootclasspath. os::set_boot_path() |
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2058 // uses meta_index_dir as the default bootclasspath directory. |
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2059 const char* altclasses_jar = "alt-rt.jar"; |
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2060 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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2061 strlen(altclasses_jar); |
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2062 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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2063 strcpy(altclasses_path, get_meta_index_dir()); |
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2064 strcat(altclasses_path, altclasses_jar); |
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2065 scp.add_suffix_to_prefix(altclasses_path); |
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2066 scp_assembly_required = true; |
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2067 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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2068 } |
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2069 |
| 0 | 2070 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 2071 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 2072 if (result != JNI_OK) { | |
| 2073 return result; | |
| 2074 } | |
| 2075 | |
| 2076 // Do final processing now that all arguments have been parsed | |
| 2077 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 2078 if (result != JNI_OK) { | |
| 2079 return result; | |
| 2080 } | |
| 2081 | |
| 2082 return JNI_OK; | |
| 2083 } | |
| 2084 | |
| 2085 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 2086 SysClassPath* scp_p, | |
| 2087 bool* scp_assembly_required_p, | |
| 2088 FlagValueOrigin origin) { | |
| 2089 // Remaining part of option string | |
| 2090 const char* tail; | |
| 2091 | |
| 2092 // iterate over arguments | |
| 2093 for (int index = 0; index < args->nOptions; index++) { | |
| 2094 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 2095 | |
| 2096 const JavaVMOption* option = args->options + index; | |
| 2097 | |
| 2098 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 2099 !match_option(option, "-Dsun.java.command", &tail) && | |
| 2100 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 2101 | |
| 2102 // add all jvm options to the jvm_args string. This string | |
| 2103 // is used later to set the java.vm.args PerfData string constant. | |
| 2104 // the -Djava.class.path and the -Dsun.java.command options are | |
| 2105 // omitted from jvm_args string as each have their own PerfData | |
| 2106 // string constant object. | |
| 2107 build_jvm_args(option->optionString); | |
| 2108 } | |
| 2109 | |
| 2110 // -verbose:[class/gc/jni] | |
| 2111 if (match_option(option, "-verbose", &tail)) { | |
| 2112 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 2113 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 2114 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2115 } else if (!strcmp(tail, ":gc")) { | |
| 2116 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2117 } else if (!strcmp(tail, ":jni")) { | |
| 2118 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 2119 } | |
| 2120 // -da / -ea / -disableassertions / -enableassertions | |
| 2121 // These accept an optional class/package name separated by a colon, e.g., | |
| 2122 // -da:java.lang.Thread. | |
| 2123 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 2124 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2125 if (*tail == '\0') { | |
| 2126 JavaAssertions::setUserClassDefault(enable); | |
| 2127 } else { | |
| 2128 assert(*tail == ':', "bogus match by match_option()"); | |
| 2129 JavaAssertions::addOption(tail + 1, enable); | |
| 2130 } | |
| 2131 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 2132 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 2133 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2134 JavaAssertions::setSystemClassDefault(enable); | |
| 2135 // -bootclasspath: | |
| 2136 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 2137 scp_p->reset_path(tail); | |
| 2138 *scp_assembly_required_p = true; | |
| 2139 // -bootclasspath/a: | |
| 2140 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 2141 scp_p->add_suffix(tail); | |
| 2142 *scp_assembly_required_p = true; | |
| 2143 // -bootclasspath/p: | |
| 2144 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 2145 scp_p->add_prefix(tail); | |
| 2146 *scp_assembly_required_p = true; | |
| 2147 // -Xrun | |
| 2148 } else if (match_option(option, "-Xrun", &tail)) { | |
|
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2149 if (tail != NULL) { |
| 0 | 2150 const char* pos = strchr(tail, ':'); |
| 2151 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2152 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2153 name[len] = '\0'; | |
| 2154 | |
| 2155 char *options = NULL; | |
| 2156 if(pos != NULL) { | |
| 2157 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 2158 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 2159 } | |
| 2160 #ifdef JVMTI_KERNEL | |
| 2161 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2162 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2163 } else | |
| 2164 #endif // JVMTI_KERNEL | |
| 2165 add_init_library(name, options); | |
| 2166 } | |
| 2167 // -agentlib and -agentpath | |
| 2168 } else if (match_option(option, "-agentlib:", &tail) || | |
| 2169 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 2170 if(tail != NULL) { | |
| 2171 const char* pos = strchr(tail, '='); | |
| 2172 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2173 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2174 name[len] = '\0'; | |
| 2175 | |
| 2176 char *options = NULL; | |
| 2177 if(pos != NULL) { | |
| 2178 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 2179 } | |
| 2180 #ifdef JVMTI_KERNEL | |
| 2181 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2182 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2183 } else | |
| 2184 #endif // JVMTI_KERNEL | |
| 2185 add_init_agent(name, options, is_absolute_path); | |
| 2186 | |
| 2187 } | |
| 2188 // -javaagent | |
| 2189 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 2190 if(tail != NULL) { | |
| 2191 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 2192 add_init_agent("instrument", options, false); | |
| 2193 } | |
| 2194 // -Xnoclassgc | |
| 2195 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 2196 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 2197 // -Xincgc: i-CMS | |
| 2198 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 2199 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2200 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 2201 // -Xnoincgc: no i-CMS | |
| 2202 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 2203 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2204 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 2205 // -Xconcgc | |
| 2206 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 2207 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2208 // -Xnoconcgc | |
| 2209 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 2210 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2211 // -Xbatch | |
| 2212 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 2213 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2214 // -Xmn for compatibility with other JVM vendors | |
| 2215 } else if (match_option(option, "-Xmn", &tail)) { | |
|
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2216 julong long_initial_eden_size = 0; |
| 0 | 2217 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 2218 if (errcode != arg_in_range) { | |
| 2219 jio_fprintf(defaultStream::error_stream(), | |
| 2220 "Invalid initial eden size: %s\n", option->optionString); | |
| 2221 describe_range_error(errcode); | |
| 2222 return JNI_EINVAL; | |
| 2223 } | |
| 1064 | 2224 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
| 2225 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
| 0 | 2226 // -Xms |
| 2227 } else if (match_option(option, "-Xms", &tail)) { | |
|
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2228 julong long_initial_heap_size = 0; |
| 0 | 2229 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 2230 if (errcode != arg_in_range) { | |
| 2231 jio_fprintf(defaultStream::error_stream(), | |
| 2232 "Invalid initial heap size: %s\n", option->optionString); | |
| 2233 describe_range_error(errcode); | |
| 2234 return JNI_EINVAL; | |
| 2235 } | |
| 1064 | 2236 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
| 0 | 2237 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2238 set_min_heap_size(InitialHeapSize); |
| 0 | 2239 // -Xmx |
| 2240 } else if (match_option(option, "-Xmx", &tail)) { | |
|
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2241 julong long_max_heap_size = 0; |
| 0 | 2242 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 2243 if (errcode != arg_in_range) { | |
| 2244 jio_fprintf(defaultStream::error_stream(), | |
| 2245 "Invalid maximum heap size: %s\n", option->optionString); | |
| 2246 describe_range_error(errcode); | |
| 2247 return JNI_EINVAL; | |
| 2248 } | |
| 1064 | 2249 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
| 0 | 2250 // Xmaxf |
| 2251 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 2252 int maxf = (int)(atof(tail) * 100); | |
| 2253 if (maxf < 0 || maxf > 100) { | |
| 2254 jio_fprintf(defaultStream::error_stream(), | |
| 2255 "Bad max heap free percentage size: %s\n", | |
| 2256 option->optionString); | |
| 2257 return JNI_EINVAL; | |
| 2258 } else { | |
| 2259 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 2260 } | |
| 2261 // Xminf | |
| 2262 } else if (match_option(option, "-Xminf", &tail)) { | |
| 2263 int minf = (int)(atof(tail) * 100); | |
| 2264 if (minf < 0 || minf > 100) { | |
| 2265 jio_fprintf(defaultStream::error_stream(), | |
| 2266 "Bad min heap free percentage size: %s\n", | |
| 2267 option->optionString); | |
| 2268 return JNI_EINVAL; | |
| 2269 } else { | |
| 2270 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 2271 } | |
| 2272 // -Xss | |
| 2273 } else if (match_option(option, "-Xss", &tail)) { | |
|
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2274 julong long_ThreadStackSize = 0; |
| 0 | 2275 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 2276 if (errcode != arg_in_range) { | |
| 2277 jio_fprintf(defaultStream::error_stream(), | |
| 2278 "Invalid thread stack size: %s\n", option->optionString); | |
| 2279 describe_range_error(errcode); | |
| 2280 return JNI_EINVAL; | |
| 2281 } | |
| 2282 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 2283 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 2284 round_to((int)long_ThreadStackSize, K) / K); | |
| 2285 // -Xoss | |
| 2286 } else if (match_option(option, "-Xoss", &tail)) { | |
| 2287 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 2288 // -Xmaxjitcodesize | |
|
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2289 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2290 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
|
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2291 julong long_ReservedCodeCacheSize = 0; |
| 0 | 2292 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
|
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2293 (size_t)InitialCodeCacheSize); |
| 0 | 2294 if (errcode != arg_in_range) { |
| 2295 jio_fprintf(defaultStream::error_stream(), | |
|
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2296 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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|
2297 option->optionString, InitialCodeCacheSize/K); |
| 0 | 2298 describe_range_error(errcode); |
| 2299 return JNI_EINVAL; | |
| 2300 } | |
| 2301 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 2302 // -green | |
| 2303 } else if (match_option(option, "-green", &tail)) { | |
| 2304 jio_fprintf(defaultStream::error_stream(), | |
| 2305 "Green threads support not available\n"); | |
| 2306 return JNI_EINVAL; | |
| 2307 // -native | |
| 2308 } else if (match_option(option, "-native", &tail)) { | |
| 2309 // HotSpot always uses native threads, ignore silently for compatibility | |
| 2310 // -Xsqnopause | |
| 2311 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 2312 // EVM option, ignore silently for compatibility | |
| 2313 // -Xrs | |
| 2314 } else if (match_option(option, "-Xrs", &tail)) { | |
| 2315 // Classic/EVM option, new functionality | |
| 2316 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 2317 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 2318 // change default internal VM signals used - lower case for back compat | |
| 2319 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 2320 // -Xoptimize | |
| 2321 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 2322 // EVM option, ignore silently for compatibility | |
| 2323 // -Xprof | |
| 2324 } else if (match_option(option, "-Xprof", &tail)) { | |
| 2325 #ifndef FPROF_KERNEL | |
| 2326 _has_profile = true; | |
| 2327 #else // FPROF_KERNEL | |
| 2328 // do we have to exit? | |
| 2329 warning("Kernel VM does not support flat profiling."); | |
| 2330 #endif // FPROF_KERNEL | |
| 2331 // -Xaprof | |
| 2332 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2333 _has_alloc_profile = true; | |
| 2334 // -Xconcurrentio | |
| 2335 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2336 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2337 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2338 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2339 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2340 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2341 | |
| 2342 // -Xinternalversion | |
| 2343 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2344 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2345 VM_Version::internal_vm_info_string()); | |
| 2346 vm_exit(0); | |
| 2347 #ifndef PRODUCT | |
| 2348 // -Xprintflags | |
| 2349 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 2350 CommandLineFlags::printFlags(); | |
| 2351 vm_exit(0); | |
| 2352 #endif | |
| 2353 // -D | |
| 2354 } else if (match_option(option, "-D", &tail)) { | |
| 2355 if (!add_property(tail)) { | |
| 2356 return JNI_ENOMEM; | |
| 2357 } | |
| 2358 // Out of the box management support | |
| 2359 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2360 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2361 } | |
| 2362 // -Xint | |
| 2363 } else if (match_option(option, "-Xint", &tail)) { | |
| 2364 set_mode_flags(_int); | |
| 2365 // -Xmixed | |
| 2366 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2367 set_mode_flags(_mixed); | |
| 2368 // -Xcomp | |
| 2369 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2370 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2371 set_mode_flags(_comp); | |
| 2372 | |
| 2373 // -Xshare:dump | |
| 2374 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2375 #ifdef TIERED | |
| 2376 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2377 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2378 #elif defined(COMPILER2) | |
| 2379 vm_exit_during_initialization( | |
| 2380 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2381 #elif defined(KERNEL) | |
| 2382 vm_exit_during_initialization( | |
| 2383 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2384 #else | |
| 2385 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2386 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2387 #endif | |
| 2388 // -Xshare:on | |
| 2389 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2390 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2391 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2392 // -Xshare:auto | |
| 2393 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2394 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2395 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2396 // -Xshare:off | |
| 2397 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2398 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2399 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2400 | |
| 2401 // -Xverify | |
| 2402 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2403 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2404 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2405 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2406 } else if (strcmp(tail, ":remote") == 0) { | |
| 2407 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2408 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2409 } else if (strcmp(tail, ":none") == 0) { | |
| 2410 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2411 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2412 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2413 return JNI_EINVAL; | |
| 2414 } | |
| 2415 // -Xdebug | |
| 2416 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2417 // note this flag has been used, then ignore | |
| 2418 set_xdebug_mode(true); | |
| 2419 // -Xnoagent | |
| 2420 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2421 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2422 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2423 // Bind user level threads to kernel threads (Solaris only) | |
| 2424 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2425 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2426 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2427 // ostream_init_log(), when called will use this filename | |
| 2428 // to initialize a fileStream. | |
| 2429 _gc_log_filename = strdup(tail); | |
| 2430 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2431 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2432 | |
| 2433 // JNI hooks | |
| 2434 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2435 if (!strcmp(tail, ":jni")) { | |
| 2436 CheckJNICalls = true; | |
| 2437 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2438 "check")) { | |
| 2439 return JNI_EINVAL; | |
| 2440 } | |
| 2441 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2442 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2443 } else if (match_option(option, "exit", &tail)) { | |
| 2444 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2445 } else if (match_option(option, "abort", &tail)) { | |
| 2446 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2447 // -XX:+AggressiveHeap | |
| 2448 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2449 | |
| 2450 // This option inspects the machine and attempts to set various | |
| 2451 // parameters to be optimal for long-running, memory allocation | |
| 2452 // intensive jobs. It is intended for machines with large | |
| 2453 // amounts of cpu and memory. | |
| 2454 | |
| 2455 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2456 // VM, but we may not be able to represent the total physical memory | |
| 2457 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2458 // Thus, we need to make sure we're using a julong for intermediate | |
| 2459 // calculations. | |
| 2460 julong initHeapSize; | |
| 2461 julong total_memory = os::physical_memory(); | |
| 2462 | |
| 2463 if (total_memory < (julong)256*M) { | |
| 2464 jio_fprintf(defaultStream::error_stream(), | |
| 2465 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2466 vm_exit(1); | |
| 2467 } | |
| 2468 | |
| 2469 // The heap size is half of available memory, or (at most) | |
| 2470 // all of possible memory less 160mb (leaving room for the OS | |
| 2471 // when using ISM). This is the maximum; because adaptive sizing | |
| 2472 // is turned on below, the actual space used may be smaller. | |
| 2473 | |
| 2474 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2475 total_memory - (julong)160*M); | |
| 2476 | |
| 2477 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2478 // process space. The 64bit VM version of this function is a nop. | |
| 2479 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2480 | |
| 2481 // The perm gen is separate but contiguous with the | |
| 2482 // object heap (and is reserved with it) so subtract it | |
| 2483 // from the heap size. | |
| 2484 if (initHeapSize > MaxPermSize) { | |
| 2485 initHeapSize = initHeapSize - MaxPermSize; | |
| 2486 } else { | |
| 2487 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2488 } | |
| 2489 | |
| 2490 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2491 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 1064 | 2492 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
| 0 | 2493 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2494 set_min_heap_size(initHeapSize); |
| 0 | 2495 } |
| 2496 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2497 // Make the young generation 3/8ths of the total heap. | |
| 2498 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2499 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2500 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2501 } | |
| 2502 | |
| 2503 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2504 | |
| 2505 // Increase some data structure sizes for efficiency | |
| 2506 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2507 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2508 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2509 | |
| 2510 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2511 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2512 // space per-gc-thread buffers. The default is 4kw. | |
| 2513 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2514 | |
| 2515 // OldPLABSize is the size of the buffers in the old gen that | |
| 2516 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2517 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2518 // The default size is 1kw. These buffers are rarely used, since the | |
| 2519 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2520 // are occasions when there's lots of live data in the young gen | |
| 2521 // and we end up promoting some of it. We don't have a definite | |
| 2522 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2523 // is that a bigger PLAB results in retaining something like the | |
| 2524 // original allocation order after promotion, which improves mutator | |
| 2525 // locality. A minor effect may be that larger PLABs reduce the | |
| 2526 // number of PLAB allocation events during gc. The value of 8kw | |
| 2527 // was arrived at by experimenting with specjbb. | |
| 2528 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2529 | |
| 2530 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
| 2531 // a more conservative which-method-do-I-compile policy when one | |
| 2532 // of the counters maintained by the interpreter trips. The | |
| 2533 // result is reduced startup time and improved specjbb and | |
| 2534 // alacrity performance. Zero is the default, but we set it | |
| 2535 // explicitly here in case the default changes. | |
| 2536 // See runtime/compilationPolicy.*. | |
| 2537 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
| 2538 | |
| 2539 // Enable parallel GC and adaptive generation sizing | |
| 2540 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
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2541 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2542 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2543 |
| 2544 // Encourage steady state memory management | |
| 2545 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2546 | |
| 2547 // This appears to improve mutator locality | |
| 2548 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2549 | |
| 2550 // Get around early Solaris scheduling bug | |
| 2551 // (affinity vs other jobs on system) | |
| 2552 // but disallow DR and offlining (5008695). | |
| 2553 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2554 | |
| 2555 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2556 // The last option must always win. | |
| 2557 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2558 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2559 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2560 // The last option must always win. | |
| 2561 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2562 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2563 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2564 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2565 jio_fprintf(defaultStream::error_stream(), | |
| 2566 "Please use CMSClassUnloadingEnabled in place of " | |
| 2567 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2568 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2569 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2570 jio_fprintf(defaultStream::error_stream(), | |
| 2571 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2572 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2573 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2574 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2575 jio_fprintf(defaultStream::error_stream(), | |
| 2576 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2577 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2578 // The TLE options are for compatibility with 1.3 and will be | |
| 2579 // removed without notice in a future release. These options | |
| 2580 // are not to be documented. | |
| 2581 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2582 // No longer used. | |
| 2583 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2584 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2585 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2586 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2587 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2588 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2589 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2590 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2591 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2592 // No longer used. | |
| 2593 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
489
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swamyv
parents:
483
diff
changeset
|
2594 julong long_tlab_size = 0; |
| 0 | 2595 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2596 if (errcode != arg_in_range) { | |
| 2597 jio_fprintf(defaultStream::error_stream(), | |
| 2598 "Invalid TLAB size: %s\n", option->optionString); | |
| 2599 describe_range_error(errcode); | |
| 2600 return JNI_EINVAL; | |
| 2601 } | |
| 2602 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2603 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2604 // No longer used. | |
| 2605 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2606 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2607 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2608 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2609 SOLARIS_ONLY( | |
| 2610 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2611 warning("-XX:+UsePermISM is obsolete."); | |
| 2612 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2613 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2614 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2615 ) | |
| 2616 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2617 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2618 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2619 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2620 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2621 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2622 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 2623 #ifdef SOLARIS | |
| 2624 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
| 2625 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2626 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2627 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 2628 #else // ndef SOLARIS | |
| 2629 jio_fprintf(defaultStream::error_stream(), | |
| 2630 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
| 2631 return JNI_EINVAL; | |
| 2632 #endif // ndef SOLARIS | |
| 2633 #ifdef ASSERT | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2634 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
| 0 | 2635 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
| 2636 // disable scavenge before parallel mark-compact | |
| 2637 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2638 #endif | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2639 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
| 0 | 2640 julong cms_blocks_to_claim = (julong)atol(tail); |
| 2641 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2642 jio_fprintf(defaultStream::error_stream(), | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2643 "Please use -XX:OldPLABSize in place of " |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2644 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2645 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2646 julong cms_blocks_to_claim = (julong)atol(tail); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2647 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2648 jio_fprintf(defaultStream::error_stream(), |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2649 "Please use -XX:OldPLABSize in place of " |
| 0 | 2650 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2651 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2652 julong old_plab_size = 0; |
| 0 | 2653 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2654 if (errcode != arg_in_range) { | |
| 2655 jio_fprintf(defaultStream::error_stream(), | |
| 2656 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2657 describe_range_error(errcode); | |
| 2658 return JNI_EINVAL; | |
| 2659 } | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2660 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2661 jio_fprintf(defaultStream::error_stream(), |
| 2662 "Please use -XX:OldPLABSize in place of " | |
| 2663 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2664 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2665 julong young_plab_size = 0; |
| 0 | 2666 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2667 if (errcode != arg_in_range) { | |
| 2668 jio_fprintf(defaultStream::error_stream(), | |
| 2669 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2670 describe_range_error(errcode); | |
| 2671 return JNI_EINVAL; | |
| 2672 } | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2673 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2674 jio_fprintf(defaultStream::error_stream(), |
| 2675 "Please use -XX:YoungPLABSize in place of " | |
| 2676 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 1284 | 2677 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
| 2678 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
| 2679 julong stack_size = 0; | |
| 2680 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
| 2681 if (errcode != arg_in_range) { | |
| 2682 jio_fprintf(defaultStream::error_stream(), | |
| 2683 "Invalid mark stack size: %s\n", option->optionString); | |
| 2684 describe_range_error(errcode); | |
| 2685 return JNI_EINVAL; | |
| 2686 } | |
| 2687 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
| 2688 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
| 2689 julong max_stack_size = 0; | |
| 2690 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
| 2691 if (errcode != arg_in_range) { | |
| 2692 jio_fprintf(defaultStream::error_stream(), | |
| 2693 "Invalid maximum mark stack size: %s\n", | |
| 2694 option->optionString); | |
| 2695 describe_range_error(errcode); | |
| 2696 return JNI_EINVAL; | |
| 2697 } | |
| 2698 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
| 2699 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
| 2700 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
| 2701 uintx conc_threads = 0; | |
| 2702 if (!parse_uintx(tail, &conc_threads, 1)) { | |
| 2703 jio_fprintf(defaultStream::error_stream(), | |
| 2704 "Invalid concurrent threads: %s\n", option->optionString); | |
| 2705 return JNI_EINVAL; | |
| 2706 } | |
| 2707 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2708 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
| 0 | 2709 // Skip -XX:Flags= since that case has already been handled |
| 2710 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2711 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2712 return JNI_EINVAL; | |
| 2713 } | |
| 2714 } | |
|
2906
0017f484608c
Made boolean options more robust to also allow -G:Time or -G:Meter.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2901
diff
changeset
|
2715 } else if (match_option(option, "-G:", &tail)) { // -G:XXX |
|
2891
75a99b4f1c98
Rebranded C++ part from C1X to Graal.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2873
diff
changeset
|
2716 // Option for the graal compiler. |
|
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2717 if (PrintVMOptions) { |
|
2891
75a99b4f1c98
Rebranded C++ part from C1X to Graal.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2873
diff
changeset
|
2718 tty->print_cr("graal option %s", tail); |
|
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2719 } |
|
2891
75a99b4f1c98
Rebranded C++ part from C1X to Graal.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2873
diff
changeset
|
2720 Arguments::add_graal_arg(tail); |
|
1437
9e5e83ca2259
Enabled -C1X:OPTIONS when running HotSpot/C1X. Enabled checkstyle for the HotSpotVM Java project.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1356
diff
changeset
|
2721 |
| 0 | 2722 // Unknown option |
| 2723 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2724 return JNI_ERR; | |
| 2725 } | |
| 2726 } | |
|
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2727 // Change the default value for flags which have different default values |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2728 // when working with older JDKs. |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2729 if (JDK_Version::current().compare_major(6) <= 0 && |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2730 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2731 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2732 } |
|
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2733 #ifdef LINUX |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2734 if (JDK_Version::current().compare_major(6) <= 0 && |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2735 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2736 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2737 } |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2738 #endif // LINUX |
| 0 | 2739 return JNI_OK; |
| 2740 } | |
| 2741 | |
| 2742 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2743 // This must be done after all -D arguments have been processed. | |
| 2744 scp_p->expand_endorsed(); | |
| 2745 | |
| 2746 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2747 // Assemble the bootclasspath elements into the final path. | |
| 2748 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2749 } | |
| 2750 | |
| 2751 // This must be done after all arguments have been processed. | |
| 2752 // java_compiler() true means set to "NONE" or empty. | |
| 2753 if (java_compiler() && !xdebug_mode()) { | |
| 2754 // For backwards compatibility, we switch to interpreted mode if | |
| 2755 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2756 // not specified. | |
| 2757 set_mode_flags(_int); | |
| 2758 } | |
| 2759 if (CompileThreshold == 0) { | |
| 2760 set_mode_flags(_int); | |
| 2761 } | |
| 2762 | |
| 2763 #ifndef COMPILER2 | |
| 2764 // Don't degrade server performance for footprint | |
| 2765 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2766 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2767 // No need for large granularity pages w/small heaps. | |
| 2768 // Note that large pages are enabled/disabled for both the | |
| 2769 // Java heap and the code cache. | |
| 2770 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2771 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2772 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2773 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2774 |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2775 // Tiered compilation is undefined with C1. |
|
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2776 TieredCompilation = false; |
| 0 | 2777 #else |
| 2778 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2779 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2780 } | |
| 2781 #endif | |
| 2782 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2783 // 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
|
2784 // to be true unless the property has already been set. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2785 // 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
|
2786 if (os::is_headless_jre()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2787 const char* headless = Arguments::get_property("java.awt.headless"); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2788 if (headless == NULL) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2789 char envbuffer[128]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2790 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2791 if (!add_property("java.awt.headless=true")) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2792 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2793 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2794 } else { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2795 char buffer[256]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2796 strcpy(buffer, "java.awt.headless="); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2797 strcat(buffer, envbuffer); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2798 if (!add_property(buffer)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2799 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2800 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2801 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2802 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2803 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2804 |
| 0 | 2805 if (!check_vm_args_consistency()) { |
| 2806 return JNI_ERR; | |
| 2807 } | |
| 2808 | |
| 2809 return JNI_OK; | |
| 2810 } | |
| 2811 | |
| 2812 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2813 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2814 scp_assembly_required_p); | |
| 2815 } | |
| 2816 | |
| 2817 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2818 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2819 scp_assembly_required_p); | |
| 2820 } | |
| 2821 | |
| 2822 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2823 const int N_MAX_OPTIONS = 64; | |
| 2824 const int OPTION_BUFFER_SIZE = 1024; | |
| 2825 char buffer[OPTION_BUFFER_SIZE]; | |
| 2826 | |
| 2827 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2828 // Don't check this variable if user has special privileges | |
| 2829 // (e.g. unix su command). | |
| 2830 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2831 !os::have_special_privileges()) { | |
| 2832 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2833 jio_fprintf(defaultStream::error_stream(), | |
| 2834 "Picked up %s: %s\n", name, buffer); | |
| 2835 char* rd = buffer; // pointer to the input string (rd) | |
| 2836 int i; | |
| 2837 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2838 while (isspace(*rd)) rd++; // skip whitespace | |
| 2839 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2840 | |
| 2841 // The output, option string, overwrites the input string. | |
| 2842 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2843 // input string (rd). | |
| 2844 char* wrt = rd; | |
| 2845 | |
| 2846 options[i++].optionString = wrt; // Fill in option | |
| 2847 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2848 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2849 int quote = *rd; // matching quote to look for | |
| 2850 rd++; // don't copy open quote | |
| 2851 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2852 if (*rd == 0) { // string termination means unmatched string | |
| 2853 jio_fprintf(defaultStream::error_stream(), | |
| 2854 "Unmatched quote in %s\n", name); | |
| 2855 return JNI_ERR; | |
| 2856 } | |
| 2857 *wrt++ = *rd++; // copy to option string | |
| 2858 } | |
| 2859 rd++; // don't copy close quote | |
| 2860 } else { | |
| 2861 *wrt++ = *rd++; // copy to option string | |
| 2862 } | |
| 2863 } | |
| 2864 // Need to check if we're done before writing a NULL, | |
| 2865 // because the write could be to the byte that rd is pointing to. | |
| 2866 if (*rd++ == 0) { | |
| 2867 *wrt = 0; | |
| 2868 break; | |
| 2869 } | |
| 2870 *wrt = 0; // Zero terminate option | |
| 2871 } | |
| 2872 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2873 JavaVMInitArgs vm_args; | |
| 2874 vm_args.version = JNI_VERSION_1_2; | |
| 2875 vm_args.options = options; | |
| 2876 vm_args.nOptions = i; | |
| 564 | 2877 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2878 |
| 2879 if (PrintVMOptions) { | |
| 2880 const char* tail; | |
| 2881 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2882 const JavaVMOption *option = vm_args.options + i; | |
| 2883 if (match_option(option, "-XX:", &tail)) { | |
| 2884 logOption(tail); | |
| 2885 } | |
| 2886 } | |
| 2887 } | |
| 2888 | |
| 2889 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2890 } | |
| 2891 return JNI_OK; | |
| 2892 } | |
| 2893 | |
|
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|
2894 void Arguments::set_shared_spaces_flags() { |
| 2378 | 2895 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
| 2896 const bool might_share = must_share || UseSharedSpaces; | |
| 2897 | |
| 2898 // The string table is part of the shared archive so the size must match. | |
| 2899 if (!FLAG_IS_DEFAULT(StringTableSize)) { | |
| 2900 // Disable sharing. | |
| 2901 if (must_share) { | |
| 2902 warning("disabling shared archive %s because of non-default " | |
| 2903 "StringTableSize", DumpSharedSpaces ? "creation" : "use"); | |
| 2904 } | |
| 2905 if (might_share) { | |
| 2906 FLAG_SET_DEFAULT(DumpSharedSpaces, false); | |
| 2907 FLAG_SET_DEFAULT(RequireSharedSpaces, false); | |
| 2908 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 2909 } | |
| 2910 return; | |
| 2911 } | |
| 2912 | |
|
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diff
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|
2913 // Check whether class data sharing settings conflict with GC, compressed oops |
|
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diff
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|
2914 // or page size, and fix them up. Explicit sharing options override other |
|
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diff
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|
2915 // settings. |
|
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diff
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|
2916 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
|
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diff
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|
2917 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
|
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jcoomes
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diff
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|
2918 UseCompressedOops || UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
|
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jcoomes
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diff
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|
2919 if (cannot_share) { |
|
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jcoomes
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diff
changeset
|
2920 if (must_share) { |
| 2378 | 2921 warning("selecting serial gc and disabling large pages %s" |
| 2922 "because of %s", "" LP64_ONLY("and compressed oops "), | |
| 2923 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
| 2924 force_serial_gc(); | |
| 2925 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
| 2926 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
|
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jcoomes
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diff
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|
2927 } else { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
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2302
diff
changeset
|
2928 if (UseSharedSpaces && Verbose) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
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|
2929 warning("turning off use of shared archive because of " |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2930 "choice of garbage collector or large pages"); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2931 } |
|
a2c2eac1ca62
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jcoomes
parents:
2302
diff
changeset
|
2932 no_shared_spaces(); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2933 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2934 } else if (UseLargePages && might_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2935 // 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
|
2936 // there may not even be a shared archive to use. |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2937 FLAG_SET_DEFAULT(UseLargePages, false); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2938 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2939 } |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
2940 |
| 0 | 2941 // Parse entry point called from JNI_CreateJavaVM |
| 2942 | |
| 2943 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2944 | |
| 2945 // Sharing support | |
| 2946 // Construct the path to the archive | |
| 2947 char jvm_path[JVM_MAXPATHLEN]; | |
| 2948 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2949 #ifdef TIERED | |
| 2950 if (strstr(jvm_path, "client") != NULL) { | |
| 2951 force_client_mode = true; | |
| 2952 } | |
| 2953 #endif // TIERED | |
| 2954 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2955 if (end != NULL) *end = '\0'; | |
| 2956 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2957 strlen(os::file_separator()) + 20); | |
| 2958 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2959 strcpy(shared_archive_path, jvm_path); | |
| 2960 strcat(shared_archive_path, os::file_separator()); | |
| 2961 strcat(shared_archive_path, "classes"); | |
| 2962 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2963 strcat(shared_archive_path, ".jsa"); | |
| 2964 SharedArchivePath = shared_archive_path; | |
| 2965 | |
| 2966 // Remaining part of option string | |
| 2967 const char* tail; | |
| 2968 | |
| 2969 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2970 bool settings_file_specified = false; | |
| 564 | 2971 const char* flags_file; |
| 0 | 2972 int index; |
| 2973 for (index = 0; index < args->nOptions; index++) { | |
| 2974 const JavaVMOption *option = args->options + index; | |
| 2975 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2976 flags_file = tail; |
| 0 | 2977 settings_file_specified = true; |
| 2978 } | |
| 2979 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2980 PrintVMOptions = true; | |
| 2981 } | |
|
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2982 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
|
2983 PrintVMOptions = false; |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2984 } |
| 564 | 2985 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2986 IgnoreUnrecognizedVMOptions = true; | |
| 2987 } | |
| 2988 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2989 IgnoreUnrecognizedVMOptions = false; | |
| 2990 } | |
| 1150 | 2991 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
| 2992 CommandLineFlags::printFlags(); | |
| 2993 vm_exit(0); | |
| 2994 } | |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2995 |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2996 #ifndef PRODUCT |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2997 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2998 CommandLineFlags::printFlags(true); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2999 vm_exit(0); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3000 } |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3001 #endif |
| 564 | 3002 } |
| 3003 | |
| 3004 if (IgnoreUnrecognizedVMOptions) { | |
| 3005 // uncast const to modify the flag args->ignoreUnrecognized | |
| 3006 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 3007 } | |
| 3008 | |
| 3009 // Parse specified settings file | |
| 3010 if (settings_file_specified) { | |
| 3011 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 3012 return JNI_EINVAL; | |
| 3013 } | |
| 0 | 3014 } |
| 3015 | |
| 3016 // Parse default .hotspotrc settings file | |
| 3017 if (!settings_file_specified) { | |
| 3018 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 3019 return JNI_EINVAL; | |
| 3020 } | |
| 3021 } | |
| 3022 | |
| 3023 if (PrintVMOptions) { | |
| 3024 for (index = 0; index < args->nOptions; index++) { | |
| 3025 const JavaVMOption *option = args->options + index; | |
| 3026 if (match_option(option, "-XX:", &tail)) { | |
| 3027 logOption(tail); | |
| 3028 } | |
| 3029 } | |
| 3030 } | |
| 3031 | |
| 3032 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 3033 jint result = parse_vm_init_args(args); | |
| 3034 if (result != JNI_OK) { | |
| 3035 return result; | |
| 3036 } | |
| 3037 | |
| 3038 #ifndef PRODUCT | |
| 3039 if (TraceBytecodesAt != 0) { | |
| 3040 TraceBytecodes = true; | |
| 3041 } | |
| 3042 if (CountCompiledCalls) { | |
| 3043 if (UseCounterDecay) { | |
| 3044 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 3045 UseCounterDecay = false; | |
| 3046 } | |
| 3047 } | |
| 3048 #endif // PRODUCT | |
| 3049 | |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3050 // Transitional |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3051 if (EnableMethodHandles || AnonymousClasses) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3052 if (!EnableInvokeDynamic && !FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3053 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
|
3054 } else { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3055 EnableInvokeDynamic = true; |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3056 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3057 } |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3058 |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3059 // 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
|
3060 if (!JDK_Version::is_gte_jdk17x_version()) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3061 if (EnableInvokeDynamic) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3062 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3063 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
|
3064 } |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3065 EnableInvokeDynamic = false; |
| 710 | 3066 } |
| 3067 } | |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3068 |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3069 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3070 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3071 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
|
3072 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3073 ScavengeRootsInCode = 1; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3074 } |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3075 if (!JavaObjectsInPerm && ScavengeRootsInCode == 0) { |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3076 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3077 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
|
3078 } |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3079 ScavengeRootsInCode = 1; |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3080 } |
| 710 | 3081 |
| 0 | 3082 if (PrintGCDetails) { |
| 3083 // Turn on -verbose:gc options as well | |
| 3084 PrintGC = true; | |
| 3085 } | |
| 3086 | |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3087 // 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
|
3088 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
|
3089 |
| 0 | 3090 #ifdef SERIALGC |
| 1064 | 3091 force_serial_gc(); |
| 0 | 3092 #endif // SERIALGC |
| 3093 #ifdef KERNEL | |
| 3094 no_shared_spaces(); | |
| 3095 #endif // KERNEL | |
| 3096 | |
| 3097 // Set flags based on ergonomics. | |
| 3098 set_ergonomics_flags(); | |
| 3099 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3100 set_shared_spaces_flags(); |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3101 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3102 // Check the GC selections again. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3103 if (!check_gc_consistency()) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3104 return JNI_EINVAL; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3105 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3106 |
| 1783 | 3107 if (TieredCompilation) { |
| 3108 set_tiered_flags(); | |
| 3109 } else { | |
| 3110 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
| 3111 if (CompilationPolicyChoice >= 2) { | |
| 3112 vm_exit_during_initialization( | |
| 3113 "Incompatible compilation policy selected", NULL); | |
| 3114 } | |
| 3115 } | |
| 3116 | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3117 #ifndef KERNEL |
|
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3118 // Set heap size based on available physical memory |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3119 set_heap_size(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3120 // Set per-collector flags |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3121 if (UseParallelGC || UseParallelOldGC) { |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3122 set_parallel_gc_flags(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3123 } 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
|
3124 set_cms_and_parnew_gc_flags(); |
|
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
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parents:
2366
diff
changeset
|
3125 } 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
|
3126 set_parnew_gc_flags(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3127 } else if (UseG1GC) { |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3128 set_g1_gc_flags(); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3129 } |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3130 #endif // KERNEL |
|
10
28372612af5e
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jmasa
parents:
0
diff
changeset
|
3131 |
| 0 | 3132 #ifdef SERIALGC |
| 3133 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 3134 #endif // SERIALGC | |
| 3135 | |
| 3136 // Set bytecode rewriting flags | |
| 3137 set_bytecode_flags(); | |
| 3138 | |
| 3139 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 3140 set_aggressive_opts_flags(); | |
| 3141 | |
|
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3142 // Turn off biased locking for locking debug mode flags, |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3143 // 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
|
3144 // biased locking. |
| 2331 | 3145 if (UseHeavyMonitors |
| 3146 #ifdef COMPILER1 | |
| 3147 || !UseFastLocking | |
| 3148 #endif // COMPILER1 | |
| 3149 ) { | |
|
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3150 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3151 // 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
|
3152 // can't enable biased locking here |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3153 warning("Biased Locking is not supported with locking debug flags" |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3154 "; ignoring UseBiasedLocking flag." ); |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3155 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3156 UseBiasedLocking = false; |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3157 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3158 |
| 0 | 3159 #ifdef CC_INTERP |
| 1131 | 3160 // Clear flags not supported by the C++ interpreter |
| 3161 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
| 0 | 3162 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
| 1131 | 3163 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
| 3164 #endif // CC_INTERP | |
| 3165 | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3166 #ifdef COMPILER2 |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3167 if (!UseBiasedLocking || EmitSync != 0) { |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3168 UseOptoBiasInlining = false; |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3169 } |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3170 #endif |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3171 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3172 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3173 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
|
3174 DebugNonSafepoints = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3175 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3176 |
|
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3177 #ifndef PRODUCT |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3178 if (CompileTheWorld) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3179 // 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
|
3180 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3181 NmethodSweepFraction = 1; |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3182 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3183 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3184 #endif |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3185 |
| 0 | 3186 if (PrintCommandLineFlags) { |
| 3187 CommandLineFlags::printSetFlags(); | |
| 3188 } | |
| 3189 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3190 // Apply CPU specific policy for the BiasedLocking |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3191 if (UseBiasedLocking) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3192 if (!VM_Version::use_biased_locking() && |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3193 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3194 UseBiasedLocking = false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3195 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3196 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3197 |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3198 // 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
|
3199 // 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
|
3200 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
|
3201 bool set = false; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3202 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3203 if (!set) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3204 FLAG_SET_DEFAULT(PauseAtExit, true); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3205 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3206 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3207 |
| 0 | 3208 return JNI_OK; |
| 3209 } | |
| 3210 | |
| 3211 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 3212 int count = 0; | |
| 3213 while(pl != NULL) { | |
| 3214 count++; | |
| 3215 pl = pl->next(); | |
| 3216 } | |
| 3217 return count; | |
| 3218 } | |
| 3219 | |
| 3220 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 3221 assert(key != NULL, "just checking"); | |
| 3222 SystemProperty* prop; | |
| 3223 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 3224 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 3225 } | |
| 3226 return NULL; | |
| 3227 } | |
| 3228 | |
| 3229 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 3230 int count = 0; | |
| 3231 const char* ret_val = NULL; | |
| 3232 | |
| 3233 while(pl != NULL) { | |
| 3234 if(count >= index) { | |
| 3235 ret_val = pl->key(); | |
| 3236 break; | |
| 3237 } | |
| 3238 count++; | |
| 3239 pl = pl->next(); | |
| 3240 } | |
| 3241 | |
| 3242 return ret_val; | |
| 3243 } | |
| 3244 | |
| 3245 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 3246 int count = 0; | |
| 3247 char* ret_val = NULL; | |
| 3248 | |
| 3249 while(pl != NULL) { | |
| 3250 if(count >= index) { | |
| 3251 ret_val = pl->value(); | |
| 3252 break; | |
| 3253 } | |
| 3254 count++; | |
| 3255 pl = pl->next(); | |
| 3256 } | |
| 3257 | |
| 3258 return ret_val; | |
| 3259 } | |
| 3260 | |
| 3261 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 3262 SystemProperty* p = *plist; | |
| 3263 if (p == NULL) { | |
| 3264 *plist = new_p; | |
| 3265 } else { | |
| 3266 while (p->next() != NULL) { | |
| 3267 p = p->next(); | |
| 3268 } | |
| 3269 p->set_next(new_p); | |
| 3270 } | |
| 3271 } | |
| 3272 | |
| 3273 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 3274 if (plist == NULL) | |
| 3275 return; | |
| 3276 | |
| 3277 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 3278 PropertyList_add(plist, new_p); | |
| 3279 } | |
| 3280 | |
| 3281 // This add maintains unique property key in the list. | |
| 691 | 3282 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 3283 if (plist == NULL) |
| 3284 return; | |
| 3285 | |
| 3286 // If property key exist then update with new value. | |
| 3287 SystemProperty* prop; | |
| 3288 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 3289 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 3290 if (append) { |
| 3291 prop->append_value(v); | |
| 3292 } else { | |
| 3293 prop->set_value(v); | |
| 3294 } | |
| 0 | 3295 return; |
| 3296 } | |
| 3297 } | |
| 3298 | |
| 3299 PropertyList_add(plist, k, v); | |
| 3300 } | |
| 3301 | |
| 3302 #ifdef KERNEL | |
| 3303 char *Arguments::get_kernel_properties() { | |
| 3304 // Find properties starting with kernel and append them to string | |
| 3305 // We need to find out how long they are first because the URL's that they | |
| 3306 // might point to could get long. | |
| 3307 int length = 0; | |
| 3308 SystemProperty* prop; | |
| 3309 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3310 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3311 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 3312 } | |
| 3313 } | |
| 3314 // Add one for null terminator. | |
| 3315 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 3316 if (length != 0) { | |
| 3317 int pos = 0; | |
| 3318 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3319 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3320 jio_snprintf(&props[pos], length-pos, | |
| 3321 "-D%s=%s ", prop->key(), prop->value()); | |
| 3322 pos = strlen(props); | |
| 3323 } | |
| 3324 } | |
| 3325 } | |
| 3326 // null terminate props in case of null | |
| 3327 props[length] = '\0'; | |
| 3328 return props; | |
| 3329 } | |
| 3330 #endif // KERNEL | |
| 3331 | |
| 3332 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 3333 // Returns true if all of the source pointed by src has been copied over to | |
| 3334 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 3335 // Notes: | |
| 3336 // 1. If the length (buflen) of the destination buffer excluding the | |
| 3337 // NULL terminator character is not long enough for holding the expanded | |
| 3338 // pid characters, it also returns false instead of returning the partially | |
| 3339 // expanded one. | |
| 3340 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 3341 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 3342 char* buf, size_t buflen) { | |
| 3343 const char* p = src; | |
| 3344 char* b = buf; | |
| 3345 const char* src_end = &src[srclen]; | |
| 3346 char* buf_end = &buf[buflen - 1]; | |
| 3347 | |
| 3348 while (p < src_end && b < buf_end) { | |
| 3349 if (*p == '%') { | |
| 3350 switch (*(++p)) { | |
| 3351 case '%': // "%%" ==> "%" | |
| 3352 *b++ = *p++; | |
| 3353 break; | |
| 3354 case 'p': { // "%p" ==> current process id | |
| 3355 // buf_end points to the character before the last character so | |
| 3356 // that we could write '\0' to the end of the buffer. | |
| 3357 size_t buf_sz = buf_end - b + 1; | |
| 3358 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 3359 | |
| 3360 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 3361 // the expanded pid, returns false. | |
| 3362 if (ret < 0 || ret >= (int)buf_sz) { | |
| 3363 return false; | |
| 3364 } else { | |
| 3365 b += ret; | |
| 3366 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 3367 if (p == src_end && b == buf_end + 1) { | |
| 3368 // reach the end of the buffer. | |
| 3369 return true; | |
| 3370 } | |
| 3371 } | |
| 3372 p++; | |
| 3373 break; | |
| 3374 } | |
| 3375 default : | |
| 3376 *b++ = '%'; | |
| 3377 } | |
| 3378 } else { | |
| 3379 *b++ = *p++; | |
| 3380 } | |
| 3381 } | |
| 3382 *b = '\0'; | |
| 3383 return (p == src_end); // return false if not all of the source was copied | |
| 3384 } |