Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 6065:cdeda3fd141e
Merge
| author | jcoomes |
|---|---|
| date | Fri, 18 May 2012 10:27:13 -0700 |
| parents | 35e504cb49a6 9d679effd28c |
| children | f9d57285de70 d2a62e0f25eb |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 4838 | 2 * Copyright (c) 1997, 2012, 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_OS_FAMILY_linux | |
| 41 # include "os_linux.inline.hpp" | |
| 42 #endif | |
| 43 #ifdef TARGET_OS_FAMILY_solaris | |
| 44 # include "os_solaris.inline.hpp" | |
| 45 #endif | |
| 46 #ifdef TARGET_OS_FAMILY_windows | |
| 47 # include "os_windows.inline.hpp" | |
| 48 #endif | |
| 3960 | 49 #ifdef TARGET_OS_FAMILY_bsd |
| 50 # include "os_bsd.inline.hpp" | |
| 51 #endif | |
| 1972 | 52 #ifndef SERIALGC |
| 53 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
| 54 #endif | |
| 0 | 55 |
| 2474 | 56 // Note: This is a special bug reporting site for the JVM |
| 57 #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" | |
| 0 | 58 #define DEFAULT_JAVA_LAUNCHER "generic" |
| 59 | |
| 60 char** Arguments::_jvm_flags_array = NULL; | |
| 61 int Arguments::_num_jvm_flags = 0; | |
| 62 char** Arguments::_jvm_args_array = NULL; | |
| 63 int Arguments::_num_jvm_args = 0; | |
| 64 char* Arguments::_java_command = NULL; | |
| 65 SystemProperty* Arguments::_system_properties = NULL; | |
| 66 const char* Arguments::_gc_log_filename = NULL; | |
| 67 bool Arguments::_has_profile = false; | |
| 68 bool Arguments::_has_alloc_profile = false; | |
| 69 uintx Arguments::_min_heap_size = 0; | |
| 70 Arguments::Mode Arguments::_mode = _mixed; | |
| 71 bool Arguments::_java_compiler = false; | |
| 72 bool Arguments::_xdebug_mode = false; | |
| 73 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 74 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 75 int Arguments::_sun_java_launcher_pid = -1; | |
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76 bool Arguments::_created_by_gamma_launcher = false; |
| 0 | 77 |
| 78 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 79 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 80 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 81 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 82 bool Arguments::_ClipInlining = ClipInlining; | |
| 83 | |
| 84 char* Arguments::SharedArchivePath = NULL; | |
| 85 | |
| 86 AgentLibraryList Arguments::_libraryList; | |
| 87 AgentLibraryList Arguments::_agentList; | |
| 88 | |
| 89 abort_hook_t Arguments::_abort_hook = NULL; | |
| 90 exit_hook_t Arguments::_exit_hook = NULL; | |
| 91 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 92 | |
| 93 | |
| 94 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 95 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 96 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 97 SystemProperty *Arguments::_java_library_path = NULL; | |
| 98 SystemProperty *Arguments::_java_home = NULL; | |
| 99 SystemProperty *Arguments::_java_class_path = NULL; | |
| 100 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
| 101 | |
| 102 char* Arguments::_meta_index_path = NULL; | |
| 103 char* Arguments::_meta_index_dir = NULL; | |
| 104 | |
| 105 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 106 | |
| 107 static bool match_option(const JavaVMOption *option, const char* name, | |
| 108 const char** tail) { | |
| 109 int len = (int)strlen(name); | |
| 110 if (strncmp(option->optionString, name, len) == 0) { | |
| 111 *tail = option->optionString + len; | |
| 112 return true; | |
| 113 } else { | |
| 114 return false; | |
| 115 } | |
| 116 } | |
| 117 | |
| 118 static void logOption(const char* opt) { | |
| 119 if (PrintVMOptions) { | |
| 120 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 // Process java launcher properties. | |
| 125 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 126 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 127 // Must do this before setting up other system properties, | |
| 128 // as some of them may depend on launcher type. | |
| 129 for (int index = 0; index < args->nOptions; index++) { | |
| 130 const JavaVMOption* option = args->options + index; | |
| 131 const char* tail; | |
| 132 | |
| 133 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 134 process_java_launcher_argument(tail, option->extraInfo); | |
| 135 continue; | |
| 136 } | |
| 137 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 138 _sun_java_launcher_pid = atoi(tail); | |
| 139 continue; | |
| 140 } | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 // Initialize system properties key and value. | |
| 145 void Arguments::init_system_properties() { | |
| 146 | |
| 147 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 148 "Java Virtual Machine Specification", false)); | |
| 149 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 150 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 151 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 152 | |
| 153 // following are JVMTI agent writeable properties. | |
| 154 // Properties values are set to NULL and they are | |
| 155 // os specific they are initialized in os::init_system_properties_values(). | |
| 156 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 157 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 158 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 159 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 160 _java_home = new SystemProperty("java.home", NULL, true); | |
| 161 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
| 162 | |
| 163 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 164 | |
| 165 // Add to System Property list. | |
| 166 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 167 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 168 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 169 PropertyList_add(&_system_properties, _java_library_path); | |
| 170 PropertyList_add(&_system_properties, _java_home); | |
| 171 PropertyList_add(&_system_properties, _java_class_path); | |
| 172 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
| 173 | |
| 174 // Set OS specific system properties values | |
| 175 os::init_system_properties_values(); | |
| 176 } | |
| 177 | |
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178 |
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179 // Update/Initialize System properties after JDK version number is known |
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180 void Arguments::init_version_specific_system_properties() { |
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181 enum { bufsz = 16 }; |
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182 char buffer[bufsz]; |
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183 const char* spec_vendor = "Sun Microsystems Inc."; |
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184 uint32_t spec_version = 0; |
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185 |
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186 if (JDK_Version::is_gte_jdk17x_version()) { |
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187 spec_vendor = "Oracle Corporation"; |
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188 spec_version = JDK_Version::current().major_version(); |
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189 } |
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190 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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191 |
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192 PropertyList_add(&_system_properties, |
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193 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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194 PropertyList_add(&_system_properties, |
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195 new SystemProperty("java.vm.specification.version", buffer, false)); |
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196 PropertyList_add(&_system_properties, |
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197 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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198 } |
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199 |
| 242 | 200 /** |
| 201 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 202 * When a flag is eliminated, it can be added to this list in order to | |
| 203 * continue accepting this flag on the command-line, while issuing a warning | |
| 204 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 205 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 206 * a flag to die correctly over JDK releases using HSX. | |
| 207 */ | |
| 208 typedef struct { | |
| 209 const char* name; | |
| 210 JDK_Version obsoleted_in; // when the flag went away | |
| 211 JDK_Version accept_until; // which version to start denying the existence | |
| 212 } ObsoleteFlag; | |
| 0 | 213 |
| 242 | 214 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 215 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 216 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 217 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 218 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 219 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 220 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 221 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 222 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 223 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 224 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 225 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 226 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 227 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 228 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 1064 | 229 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
| 230 { "DefaultInitialRAMFraction", | |
| 231 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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232 { "UseDepthFirstScavengeOrder", |
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233 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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234 { "HandlePromotionFailure", |
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235 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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236 { "MaxLiveObjectEvacuationRatio", |
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237 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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238 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
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239 { "UseParallelOldGCCompacting", |
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240 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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241 { "UseParallelDensePrefixUpdate", |
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242 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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243 { "UseParallelOldGCDensePrefix", |
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244 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
| 2460 | 245 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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246 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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247 #ifdef PRODUCT |
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248 { "DesiredMethodLimit", |
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249 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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250 #endif // PRODUCT |
| 242 | 251 { NULL, JDK_Version(0), JDK_Version(0) } |
| 252 }; | |
| 253 | |
| 254 // Returns true if the flag is obsolete and fits into the range specified | |
| 255 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 256 // value is filled in with the version number when the flag became | |
| 257 // obsolete so that that value can be displayed to the user. | |
| 258 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 259 int i = 0; |
| 242 | 260 assert(version != NULL, "Must provide a version buffer"); |
| 261 while (obsolete_jvm_flags[i].name != NULL) { | |
| 262 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 263 // <flag>=xxx form |
| 264 // [-|+]<flag> form | |
| 242 | 265 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 266 ((s[0] == '+' || s[0] == '-') && |
| 242 | 267 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 268 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 269 *version = flag_status.obsoleted_in; | |
| 270 return true; | |
| 271 } | |
| 0 | 272 } |
| 273 i++; | |
| 274 } | |
| 275 return false; | |
| 276 } | |
| 277 | |
| 278 // Constructs the system class path (aka boot class path) from the following | |
| 279 // components, in order: | |
| 280 // | |
| 281 // prefix // from -Xbootclasspath/p:... | |
| 282 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 283 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 284 // suffix // from -Xbootclasspath/a:... | |
| 285 // | |
| 286 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 287 // directories are added to the sysclasspath just before the base. | |
| 288 // | |
| 289 // This could be AllStatic, but it isn't needed after argument processing is | |
| 290 // complete. | |
| 291 class SysClassPath: public StackObj { | |
| 292 public: | |
| 293 SysClassPath(const char* base); | |
| 294 ~SysClassPath(); | |
| 295 | |
| 296 inline void set_base(const char* base); | |
| 297 inline void add_prefix(const char* prefix); | |
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298 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 299 inline void add_suffix(const char* suffix); |
| 300 inline void reset_path(const char* base); | |
| 301 | |
| 302 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 303 // property. Must be called after all command-line arguments have been | |
| 304 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 305 // combined_path(). | |
| 306 void expand_endorsed(); | |
| 307 | |
| 308 inline const char* get_base() const { return _items[_scp_base]; } | |
| 309 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 310 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 311 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 312 | |
| 313 // Combine all the components into a single c-heap-allocated string; caller | |
| 314 // must free the string if/when no longer needed. | |
| 315 char* combined_path(); | |
| 316 | |
| 317 private: | |
| 318 // Utility routines. | |
| 319 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 320 static char* add_jars_to_path(char* path, const char* directory); | |
| 321 | |
| 322 inline void reset_item_at(int index); | |
| 323 | |
| 324 // Array indices for the items that make up the sysclasspath. All except the | |
| 325 // base are allocated in the C heap and freed by this class. | |
| 326 enum { | |
| 327 _scp_prefix, // from -Xbootclasspath/p:... | |
| 328 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 329 _scp_base, // the default sysclasspath | |
| 330 _scp_suffix, // from -Xbootclasspath/a:... | |
| 331 _scp_nitems // the number of items, must be last. | |
| 332 }; | |
| 333 | |
| 334 const char* _items[_scp_nitems]; | |
| 335 DEBUG_ONLY(bool _expansion_done;) | |
| 336 }; | |
| 337 | |
| 338 SysClassPath::SysClassPath(const char* base) { | |
| 339 memset(_items, 0, sizeof(_items)); | |
| 340 _items[_scp_base] = base; | |
| 341 DEBUG_ONLY(_expansion_done = false;) | |
| 342 } | |
| 343 | |
| 344 SysClassPath::~SysClassPath() { | |
| 345 // Free everything except the base. | |
| 346 for (int i = 0; i < _scp_nitems; ++i) { | |
| 347 if (i != _scp_base) reset_item_at(i); | |
| 348 } | |
| 349 DEBUG_ONLY(_expansion_done = false;) | |
| 350 } | |
| 351 | |
| 352 inline void SysClassPath::set_base(const char* base) { | |
| 353 _items[_scp_base] = base; | |
| 354 } | |
| 355 | |
| 356 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 357 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 358 } | |
| 359 | |
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360 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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361 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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362 } |
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363 |
| 0 | 364 inline void SysClassPath::add_suffix(const char* suffix) { |
| 365 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 366 } | |
| 367 | |
| 368 inline void SysClassPath::reset_item_at(int index) { | |
| 369 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 370 if (_items[index] != NULL) { | |
| 371 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 372 _items[index] = NULL; | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 inline void SysClassPath::reset_path(const char* base) { | |
| 377 // Clear the prefix and suffix. | |
| 378 reset_item_at(_scp_prefix); | |
| 379 reset_item_at(_scp_suffix); | |
| 380 set_base(base); | |
| 381 } | |
| 382 | |
| 383 //------------------------------------------------------------------------------ | |
| 384 | |
| 385 void SysClassPath::expand_endorsed() { | |
| 386 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 387 | |
| 388 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 389 if (path == NULL) { | |
| 390 path = Arguments::get_endorsed_dir(); | |
| 391 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 392 } | |
| 393 | |
| 394 char* expanded_path = NULL; | |
| 395 const char separator = *os::path_separator(); | |
| 396 const char* const end = path + strlen(path); | |
| 397 while (path < end) { | |
| 398 const char* tmp_end = strchr(path, separator); | |
| 399 if (tmp_end == NULL) { | |
| 400 expanded_path = add_jars_to_path(expanded_path, path); | |
| 401 path = end; | |
| 402 } else { | |
| 403 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 404 memcpy(dirpath, path, tmp_end - path); | |
| 405 dirpath[tmp_end - path] = '\0'; | |
| 406 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 407 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 408 path = tmp_end + 1; | |
| 409 } | |
| 410 } | |
| 411 _items[_scp_endorsed] = expanded_path; | |
| 412 DEBUG_ONLY(_expansion_done = true;) | |
| 413 } | |
| 414 | |
| 415 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 416 // c-heap-allocated string. | |
| 417 char* SysClassPath::combined_path() { | |
| 418 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 419 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 420 | |
| 421 size_t lengths[_scp_nitems]; | |
| 422 size_t total_len = 0; | |
| 423 | |
| 424 const char separator = *os::path_separator(); | |
| 425 | |
| 426 // Get the lengths. | |
| 427 int i; | |
| 428 for (i = 0; i < _scp_nitems; ++i) { | |
| 429 if (_items[i] != NULL) { | |
| 430 lengths[i] = strlen(_items[i]); | |
| 431 // Include space for the separator char (or a NULL for the last item). | |
| 432 total_len += lengths[i] + 1; | |
| 433 } | |
| 434 } | |
| 435 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 436 | |
| 437 // Copy the _items to a single string. | |
| 438 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 439 char* cp_tmp = cp; | |
| 440 for (i = 0; i < _scp_nitems; ++i) { | |
| 441 if (_items[i] != NULL) { | |
| 442 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 443 cp_tmp += lengths[i]; | |
| 444 *cp_tmp++ = separator; | |
| 445 } | |
| 446 } | |
| 447 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 448 return cp; | |
| 449 } | |
| 450 | |
| 451 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 452 char* | |
| 453 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 454 char *cp; | |
| 455 | |
| 456 assert(str != NULL, "just checking"); | |
| 457 if (path == NULL) { | |
| 458 size_t len = strlen(str) + 1; | |
| 459 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 460 memcpy(cp, str, len); // copy the trailing null | |
| 461 } else { | |
| 462 const char separator = *os::path_separator(); | |
| 463 size_t old_len = strlen(path); | |
| 464 size_t str_len = strlen(str); | |
| 465 size_t len = old_len + str_len + 2; | |
| 466 | |
| 467 if (prepend) { | |
| 468 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 469 char* cp_tmp = cp; | |
| 470 memcpy(cp_tmp, str, str_len); | |
| 471 cp_tmp += str_len; | |
| 472 *cp_tmp = separator; | |
| 473 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 474 FREE_C_HEAP_ARRAY(char, path); | |
| 475 } else { | |
| 476 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 477 char* cp_tmp = cp + old_len; | |
| 478 *cp_tmp = separator; | |
| 479 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 480 } | |
| 481 } | |
| 482 return cp; | |
| 483 } | |
| 484 | |
| 485 // Scan the directory and append any jar or zip files found to path. | |
| 486 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 487 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 488 DIR* dir = os::opendir(directory); | |
| 489 if (dir == NULL) return path; | |
| 490 | |
| 491 char dir_sep[2] = { '\0', '\0' }; | |
| 492 size_t directory_len = strlen(directory); | |
| 493 const char fileSep = *os::file_separator(); | |
| 494 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 495 | |
| 496 /* Scan the directory for jars/zips, appending them to path. */ | |
| 497 struct dirent *entry; | |
| 498 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 499 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 500 const char* name = entry->d_name; | |
| 501 const char* ext = name + strlen(name) - 4; | |
| 502 bool isJarOrZip = ext > name && | |
| 503 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 504 os::file_name_strcmp(ext, ".zip") == 0); | |
| 505 if (isJarOrZip) { | |
| 506 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 507 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 508 path = add_to_path(path, jarpath, false); | |
| 509 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 510 } | |
| 511 } | |
| 512 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 513 os::closedir(dir); | |
| 514 return path; | |
| 515 } | |
| 516 | |
| 517 // Parses a memory size specification string. | |
|
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518 static bool atomull(const char *s, julong* result) { |
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519 julong n = 0; |
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520 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 521 if (args_read != 1) { |
| 522 return false; | |
| 523 } | |
| 524 while (*s != '\0' && isdigit(*s)) { | |
| 525 s++; | |
| 526 } | |
| 527 // 4705540: illegal if more characters are found after the first non-digit | |
| 528 if (strlen(s) > 1) { | |
| 529 return false; | |
| 530 } | |
| 531 switch (*s) { | |
| 532 case 'T': case 't': | |
| 533 *result = n * G * K; | |
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534 // Check for overflow. |
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535 if (*result/((julong)G * K) != n) return false; |
| 0 | 536 return true; |
| 537 case 'G': case 'g': | |
| 538 *result = n * G; | |
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539 if (*result/G != n) return false; |
| 0 | 540 return true; |
| 541 case 'M': case 'm': | |
| 542 *result = n * M; | |
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543 if (*result/M != n) return false; |
| 0 | 544 return true; |
| 545 case 'K': case 'k': | |
| 546 *result = n * K; | |
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547 if (*result/K != n) return false; |
| 0 | 548 return true; |
| 549 case '\0': | |
| 550 *result = n; | |
| 551 return true; | |
| 552 default: | |
| 553 return false; | |
| 554 } | |
| 555 } | |
| 556 | |
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557 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 558 if (size < min_size) return arg_too_small; |
| 559 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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560 if (size > max_uintx) return arg_too_big; |
| 0 | 561 return arg_in_range; |
| 562 } | |
| 563 | |
| 564 // Describe an argument out of range error | |
| 565 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 566 switch(errcode) { | |
| 567 case arg_too_big: | |
| 568 jio_fprintf(defaultStream::error_stream(), | |
| 569 "The specified size exceeds the maximum " | |
| 570 "representable size.\n"); | |
| 571 break; | |
| 572 case arg_too_small: | |
| 573 case arg_unreadable: | |
| 574 case arg_in_range: | |
| 575 // do nothing for now | |
| 576 break; | |
| 577 default: | |
| 578 ShouldNotReachHere(); | |
| 579 } | |
| 580 } | |
| 581 | |
| 582 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 583 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 584 } | |
| 585 | |
| 586 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 587 double v; | |
| 588 if (sscanf(value, "%lf", &v) != 1) { | |
| 589 return false; | |
| 590 } | |
| 591 | |
| 592 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 593 return true; | |
| 594 } | |
| 595 return false; | |
| 596 } | |
| 597 | |
| 598 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
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599 julong v; |
| 0 | 600 intx intx_v; |
| 601 bool is_neg = false; | |
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602 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 603 if (*value == '-') { |
| 604 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 605 return false; | |
| 606 } | |
| 607 value++; | |
| 608 is_neg = true; | |
| 609 } | |
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610 if (!atomull(value, &v)) { |
| 0 | 611 return false; |
| 612 } | |
| 613 intx_v = (intx) v; | |
| 614 if (is_neg) { | |
| 615 intx_v = -intx_v; | |
| 616 } | |
| 617 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 618 return true; | |
| 619 } | |
| 620 uintx uintx_v = (uintx) v; | |
| 621 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 622 return true; | |
| 623 } | |
| 1064 | 624 uint64_t uint64_t_v = (uint64_t) v; |
| 625 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
| 626 return true; | |
| 627 } | |
| 0 | 628 return false; |
| 629 } | |
| 630 | |
| 631 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 632 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 633 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 634 FREE_C_HEAP_ARRAY(char, value); | |
| 635 return true; | |
| 636 } | |
| 637 | |
| 638 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 639 const char* old_value = ""; | |
| 640 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 641 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 642 size_t new_len = strlen(new_value); | |
| 643 const char* value; | |
| 644 char* free_this_too = NULL; | |
| 645 if (old_len == 0) { | |
| 646 value = new_value; | |
| 647 } else if (new_len == 0) { | |
| 648 value = old_value; | |
| 649 } else { | |
| 650 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 651 // each new setting adds another LINE to the switch: | |
| 652 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 653 value = buf; | |
| 654 free_this_too = buf; | |
| 655 } | |
| 656 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 657 // CommandLineFlags always returns a pointer that needs freeing. | |
| 658 FREE_C_HEAP_ARRAY(char, value); | |
| 659 if (free_this_too != NULL) { | |
| 660 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 661 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 662 } | |
| 663 return true; | |
| 664 } | |
| 665 | |
| 666 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 667 | |
| 668 // range of acceptable characters spelled out for portability reasons | |
| 669 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 670 #define BUFLEN 255 | |
| 671 char name[BUFLEN+1]; | |
| 672 char dummy; | |
| 673 | |
| 674 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 675 return set_bool_flag(name, false, origin); | |
| 676 } | |
| 677 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 678 return set_bool_flag(name, true, origin); | |
| 679 } | |
| 680 | |
| 681 char punct; | |
| 682 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 683 const char* value = strchr(arg, '=') + 1; | |
| 684 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 685 if (flag != NULL && flag->is_ccstr()) { | |
| 686 if (flag->ccstr_accumulates()) { | |
| 687 return append_to_string_flag(name, value, origin); | |
| 688 } else { | |
| 689 if (value[0] == '\0') { | |
| 690 value = NULL; | |
| 691 } | |
| 692 return set_string_flag(name, value, origin); | |
| 693 } | |
| 694 } | |
| 695 } | |
| 696 | |
| 697 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 698 const char* value = strchr(arg, '=') + 1; | |
| 699 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 700 if (value[0] == '\0') { | |
| 701 value = NULL; | |
| 702 } | |
| 703 return set_string_flag(name, value, origin); | |
| 704 } | |
| 705 | |
| 706 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 707 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 708 #define NUMBER_RANGE "[0123456789]" | |
| 709 char value[BUFLEN + 1]; | |
| 710 char value2[BUFLEN + 1]; | |
| 711 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 712 // Looks like a floating-point number -- try again with more lenient format string | |
| 713 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 714 return set_fp_numeric_flag(name, value, origin); | |
| 715 } | |
| 716 } | |
| 717 | |
| 718 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 719 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 720 return set_numeric_flag(name, value, origin); | |
| 721 } | |
| 722 | |
| 723 return false; | |
| 724 } | |
| 725 | |
| 726 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 727 assert(bldarray != NULL, "illegal argument"); | |
| 728 | |
| 729 if (arg == NULL) { | |
| 730 return; | |
| 731 } | |
| 732 | |
| 733 int index = *count; | |
| 734 | |
| 735 // expand the array and add arg to the last element | |
| 736 (*count)++; | |
| 737 if (*bldarray == NULL) { | |
| 738 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 739 } else { | |
| 740 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 741 } | |
| 742 (*bldarray)[index] = strdup(arg); | |
| 743 } | |
| 744 | |
| 745 void Arguments::build_jvm_args(const char* arg) { | |
| 746 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 747 } | |
| 748 | |
| 749 void Arguments::build_jvm_flags(const char* arg) { | |
| 750 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 751 } | |
| 752 | |
| 753 // utility function to return a string that concatenates all | |
| 754 // strings in a given char** array | |
| 755 const char* Arguments::build_resource_string(char** args, int count) { | |
| 756 if (args == NULL || count == 0) { | |
| 757 return NULL; | |
| 758 } | |
| 759 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 760 for (int i = 1; i < count; i++) { | |
| 761 length += strlen(args[i]) + 1; // add 1 for a space | |
| 762 } | |
| 763 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 764 strcpy(s, args[0]); | |
| 765 for (int j = 1; j < count; j++) { | |
| 766 strcat(s, " "); | |
| 767 strcat(s, args[j]); | |
| 768 } | |
| 769 return (const char*) s; | |
| 770 } | |
| 771 | |
| 772 void Arguments::print_on(outputStream* st) { | |
| 773 st->print_cr("VM Arguments:"); | |
| 774 if (num_jvm_flags() > 0) { | |
| 775 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 776 } | |
| 777 if (num_jvm_args() > 0) { | |
| 778 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 779 } | |
| 780 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 781 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 782 } | |
| 783 | |
| 784 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 785 if (_num_jvm_flags > 0) { | |
| 786 for (int i=0; i < _num_jvm_flags; i++) { | |
| 787 st->print("%s ", _jvm_flags_array[i]); | |
| 788 } | |
| 789 st->print_cr(""); | |
| 790 } | |
| 791 } | |
| 792 | |
| 793 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 794 if (_num_jvm_args > 0) { | |
| 795 for (int i=0; i < _num_jvm_args; i++) { | |
| 796 st->print("%s ", _jvm_args_array[i]); | |
| 797 } | |
| 798 st->print_cr(""); | |
| 799 } | |
| 800 } | |
| 801 | |
| 242 | 802 bool Arguments::process_argument(const char* arg, |
| 803 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 804 | |
| 805 JDK_Version since = JDK_Version(); | |
| 0 | 806 |
| 3250 | 807 if (parse_argument(arg, origin) || ignore_unrecognized) { |
| 808 return true; | |
| 0 | 809 } |
| 3250 | 810 |
| 811 const char * const argname = *arg == '+' || *arg == '-' ? arg + 1 : arg; | |
| 812 if (is_newly_obsolete(arg, &since)) { | |
| 813 char version[256]; | |
| 814 since.to_string(version, sizeof(version)); | |
| 815 warning("ignoring option %s; support was removed in %s", argname, version); | |
| 816 return true; | |
| 817 } | |
| 818 | |
|
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819 // For locked flags, report a custom error message if available. |
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820 // Otherwise, report the standard unrecognized VM option. |
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821 |
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822 Flag* locked_flag = Flag::find_flag((char*)argname, strlen(argname), true); |
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823 if (locked_flag != NULL) { |
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824 char locked_message_buf[BUFLEN]; |
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825 locked_flag->get_locked_message(locked_message_buf, BUFLEN); |
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826 if (strlen(locked_message_buf) == 0) { |
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827 jio_fprintf(defaultStream::error_stream(), |
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828 "Unrecognized VM option '%s'\n", argname); |
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829 } else { |
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830 jio_fprintf(defaultStream::error_stream(), "%s", locked_message_buf); |
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831 } |
| 6017 | 832 } else { |
| 833 jio_fprintf(defaultStream::error_stream(), | |
| 834 "Unrecognized VM option '%s'\n", argname); | |
|
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835 } |
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836 |
| 3250 | 837 // allow for commandline "commenting out" options like -XX:#+Verbose |
| 838 return arg[0] == '#'; | |
| 0 | 839 } |
| 840 | |
| 841 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 842 FILE* stream = fopen(file_name, "rb"); | |
| 843 if (stream == NULL) { | |
| 844 if (should_exist) { | |
| 845 jio_fprintf(defaultStream::error_stream(), | |
| 846 "Could not open settings file %s\n", file_name); | |
| 847 return false; | |
| 848 } else { | |
| 849 return true; | |
| 850 } | |
| 851 } | |
| 852 | |
| 853 char token[1024]; | |
| 854 int pos = 0; | |
| 855 | |
| 856 bool in_white_space = true; | |
| 857 bool in_comment = false; | |
| 858 bool in_quote = false; | |
| 859 char quote_c = 0; | |
| 860 bool result = true; | |
| 861 | |
| 862 int c = getc(stream); | |
| 863 while(c != EOF) { | |
| 864 if (in_white_space) { | |
| 865 if (in_comment) { | |
| 866 if (c == '\n') in_comment = false; | |
| 867 } else { | |
| 868 if (c == '#') in_comment = true; | |
| 869 else if (!isspace(c)) { | |
| 870 in_white_space = false; | |
| 871 token[pos++] = c; | |
| 872 } | |
| 873 } | |
| 874 } else { | |
| 875 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 876 // token ends at newline, or at unquoted whitespace | |
| 877 // this allows a way to include spaces in string-valued options | |
| 878 token[pos] = '\0'; | |
| 879 logOption(token); | |
| 880 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 881 build_jvm_flags(token); | |
| 882 pos = 0; | |
| 883 in_white_space = true; | |
| 884 in_quote = false; | |
| 885 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 886 in_quote = true; | |
| 887 quote_c = c; | |
| 888 } else if (in_quote && (c == quote_c)) { | |
| 889 in_quote = false; | |
| 890 } else { | |
| 891 token[pos++] = c; | |
| 892 } | |
| 893 } | |
| 894 c = getc(stream); | |
| 895 } | |
| 896 if (pos > 0) { | |
| 897 token[pos] = '\0'; | |
| 898 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 899 build_jvm_flags(token); | |
| 900 } | |
| 901 fclose(stream); | |
| 902 return result; | |
| 903 } | |
| 904 | |
| 905 //============================================================================================================= | |
| 906 // Parsing of properties (-D) | |
| 907 | |
| 908 const char* Arguments::get_property(const char* key) { | |
| 909 return PropertyList_get_value(system_properties(), key); | |
| 910 } | |
| 911 | |
| 912 bool Arguments::add_property(const char* prop) { | |
| 913 const char* eq = strchr(prop, '='); | |
| 914 char* key; | |
| 915 // ns must be static--its address may be stored in a SystemProperty object. | |
| 916 const static char ns[1] = {0}; | |
| 917 char* value = (char *)ns; | |
| 918 | |
| 919 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 920 key = AllocateHeap(key_len + 1, "add_property"); | |
| 921 strncpy(key, prop, key_len); | |
| 922 key[key_len] = '\0'; | |
| 923 | |
| 924 if (eq != NULL) { | |
| 925 size_t value_len = strlen(prop) - key_len - 1; | |
| 926 value = AllocateHeap(value_len + 1, "add_property"); | |
| 927 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 928 } | |
| 929 | |
| 930 if (strcmp(key, "java.compiler") == 0) { | |
| 931 process_java_compiler_argument(value); | |
| 932 FreeHeap(key); | |
| 933 if (eq != NULL) { | |
| 934 FreeHeap(value); | |
| 935 } | |
| 936 return true; | |
| 691 | 937 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 938 _java_command = value; |
| 939 | |
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940 // Record value in Arguments, but let it get passed to Java. |
| 691 | 941 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 942 // launcher.pid property is private and is processed |
| 943 // in process_sun_java_launcher_properties(); | |
| 944 // the sun.java.launcher property is passed on to the java application | |
| 945 FreeHeap(key); | |
| 946 if (eq != NULL) { | |
| 947 FreeHeap(value); | |
| 948 } | |
| 949 return true; | |
| 691 | 950 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 951 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 952 // its value without going through the property list or making a Java call. | |
| 953 _java_vendor_url_bug = value; | |
| 691 | 954 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 955 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 956 return true; | |
| 0 | 957 } |
| 958 // Create new property and add at the end of the list | |
| 959 PropertyList_unique_add(&_system_properties, key, value); | |
| 960 return true; | |
| 961 } | |
| 962 | |
| 963 //=========================================================================================================== | |
| 964 // Setting int/mixed/comp mode flags | |
| 965 | |
| 966 void Arguments::set_mode_flags(Mode mode) { | |
| 967 // Set up default values for all flags. | |
| 968 // If you add a flag to any of the branches below, | |
| 969 // add a default value for it here. | |
| 970 set_java_compiler(false); | |
| 971 _mode = mode; | |
| 972 | |
| 973 // Ensure Agent_OnLoad has the correct initial values. | |
| 974 // This may not be the final mode; mode may change later in onload phase. | |
| 975 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
|
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976 (char*)VM_Version::vm_info_string(), false); |
| 0 | 977 |
| 978 UseInterpreter = true; | |
| 979 UseCompiler = true; | |
| 980 UseLoopCounter = true; | |
| 981 | |
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982 #ifndef ZERO |
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983 // Turn these off for mixed and comp. Leave them on for Zero. |
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984 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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985 UseFastAccessorMethods = (mode == _int); |
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986 } |
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987 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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988 UseFastEmptyMethods = (mode == _int); |
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989 } |
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990 #endif |
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991 |
| 0 | 992 // Default values may be platform/compiler dependent - |
| 993 // use the saved values | |
| 994 ClipInlining = Arguments::_ClipInlining; | |
| 995 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 996 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 997 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 998 | |
| 999 // Change from defaults based on mode | |
| 1000 switch (mode) { | |
| 1001 default: | |
| 1002 ShouldNotReachHere(); | |
| 1003 break; | |
| 1004 case _int: | |
| 1005 UseCompiler = false; | |
| 1006 UseLoopCounter = false; | |
| 1007 AlwaysCompileLoopMethods = false; | |
| 1008 UseOnStackReplacement = false; | |
| 1009 break; | |
| 1010 case _mixed: | |
| 1011 // same as default | |
| 1012 break; | |
| 1013 case _comp: | |
| 1014 UseInterpreter = false; | |
| 1015 BackgroundCompilation = false; | |
| 1016 ClipInlining = false; | |
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1017 // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
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1018 // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
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1019 // compile a level 4 (C2) and then continue executing it. |
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1020 if (TieredCompilation) { |
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1021 Tier3InvokeNotifyFreqLog = 0; |
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1022 Tier4InvocationThreshold = 0; |
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1023 } |
| 0 | 1024 break; |
| 1025 } | |
| 1026 } | |
| 1027 | |
| 1028 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 1029 // incompatible command line options were chosen. | |
| 1030 | |
| 1031 static void no_shared_spaces() { | |
| 1032 if (RequireSharedSpaces) { | |
| 1033 jio_fprintf(defaultStream::error_stream(), | |
| 1034 "Class data sharing is inconsistent with other specified options.\n"); | |
| 1035 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 1036 } else { | |
| 1037 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 1038 } | |
| 1039 } | |
| 1040 | |
| 1783 | 1041 void Arguments::set_tiered_flags() { |
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1042 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
| 1783 | 1043 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1044 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
| 1783 | 1045 } |
| 1046 if (CompilationPolicyChoice < 2) { | |
| 1047 vm_exit_during_initialization( | |
| 1048 "Incompatible compilation policy selected", NULL); | |
| 1049 } | |
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1050 // Increase the code cache size - tiered compiles a lot more. |
| 1783 | 1051 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
| 1052 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
| 1053 } | |
| 1054 } | |
| 1055 | |
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1056 #ifndef KERNEL |
| 4838 | 1057 static void disable_adaptive_size_policy(const char* collector_name) { |
| 1058 if (UseAdaptiveSizePolicy) { | |
| 1059 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | |
| 1060 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | |
| 1061 collector_name); | |
| 1062 } | |
| 1063 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); | |
| 1064 } | |
| 1065 } | |
| 1066 | |
| 0 | 1067 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
| 1068 // if it's not explictly set or unset. If the user has chosen | |
| 1069 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 1070 // set it, unless this is a single cpu machine. | |
| 1071 void Arguments::set_parnew_gc_flags() { | |
| 1064 | 1072 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1073 "control point invariant"); |
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1074 assert(UseParNewGC, "Error"); |
| 0 | 1075 |
| 4838 | 1076 // Turn off AdaptiveSizePolicy for parnew until it is complete. |
| 1077 disable_adaptive_size_policy("UseParNewGC"); | |
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1078 |
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1079 if (ParallelGCThreads == 0) { |
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1080 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1081 Abstract_VM_Version::parallel_worker_threads()); |
| 1064 | 1082 if (ParallelGCThreads == 1) { |
| 0 | 1083 FLAG_SET_DEFAULT(UseParNewGC, false); |
| 1064 | 1084 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
| 0 | 1085 } |
| 1086 } | |
| 1064 | 1087 if (UseParNewGC) { |
| 1088 // CDS doesn't work with ParNew yet | |
| 0 | 1089 no_shared_spaces(); |
| 1090 | |
| 695 | 1091 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
| 0 | 1092 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
| 1093 // we set them to 1024 and 1024. | |
| 1094 // See CR 6362902. | |
| 1095 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 1096 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 1097 } | |
| 1098 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1099 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 1100 } | |
| 1101 | |
| 1064 | 1102 // AlwaysTenure flag should make ParNew promote all at first collection. |
| 0 | 1103 // See CR 6362902. |
| 1104 if (AlwaysTenure) { | |
| 1105 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 1106 } | |
| 695 | 1107 // When using compressed oops, we use local overflow stacks, |
| 1108 // rather than using a global overflow list chained through | |
| 1109 // the klass word of the object's pre-image. | |
| 1110 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
| 1111 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
| 1112 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
| 1113 } | |
| 1114 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
| 1115 } | |
| 1116 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
| 0 | 1117 } |
| 1118 } | |
| 1119 | |
| 1120 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1121 // sparc/solaris for certain applications, but would gain from | |
| 1122 // further optimization and tuning efforts, and would almost | |
| 1123 // certainly gain from analysis of platform and environment. | |
| 1124 void Arguments::set_cms_and_parnew_gc_flags() { | |
| 1064 | 1125 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
|
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1126 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1127 |
| 0 | 1128 // If we are using CMS, we prefer to UseParNewGC, |
| 1129 // unless explicitly forbidden. | |
|
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1130 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
|
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1131 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1132 } |
| 1133 | |
| 4838 | 1134 // Turn off AdaptiveSizePolicy for CMS until it is complete. |
| 1135 disable_adaptive_size_policy("UseConcMarkSweepGC"); | |
| 0 | 1136 |
| 1137 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1138 // as needed. | |
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1139 if (UseParNewGC) { |
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1140 set_parnew_gc_flags(); |
| 0 | 1141 } |
| 1142 | |
|
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1143 // MaxHeapSize is aligned down in collectorPolicy |
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1144 size_t max_heap = align_size_down(MaxHeapSize, |
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1145 CardTableRS::ct_max_alignment_constraint()); |
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1146 |
| 0 | 1147 // Now make adjustments for CMS |
|
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1148 intx tenuring_default = (intx)6; |
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1149 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1150 |
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1151 // Preferred young gen size for "short" pauses: |
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1152 // upper bound depends on # of threads and NewRatio. |
| 0 | 1153 const uintx parallel_gc_threads = |
| 1154 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1155 const size_t preferred_max_new_size_unaligned = | |
|
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1156 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1157 size_t preferred_max_new_size = |
| 0 | 1158 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
| 1159 | |
| 1160 // Unless explicitly requested otherwise, size young gen | |
|
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1161 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
|
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1162 |
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1163 // If either MaxNewSize or NewRatio is set on the command line, |
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1164 // assume the user is trying to set the size of the young gen. |
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1165 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1166 |
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1167 // Set MaxNewSize to our calculated preferred_max_new_size unless |
|
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1168 // NewSize was set on the command line and it is larger than |
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1169 // preferred_max_new_size. |
| 0 | 1170 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
|
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1171 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1172 } else { |
|
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1173 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1174 } |
| 1064 | 1175 if (PrintGCDetails && Verbose) { |
|
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1176 // Too early to use gclog_or_tty |
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1177 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
|
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1178 } |
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1179 |
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1180 // Code along this path potentially sets NewSize and OldSize |
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1181 |
|
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1182 assert(max_heap >= InitialHeapSize, "Error"); |
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1183 assert(max_heap >= NewSize, "Error"); |
| 0 | 1184 |
| 1064 | 1185 if (PrintGCDetails && Verbose) { |
|
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1186 // Too early to use gclog_or_tty |
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1187 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1188 " initial_heap_size: " SIZE_FORMAT |
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|
1189 " max_heap: " SIZE_FORMAT, |
| 1064 | 1190 min_heap_size(), InitialHeapSize, max_heap); |
|
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1191 } |
|
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1192 size_t min_new = preferred_max_new_size; |
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1193 if (FLAG_IS_CMDLINE(NewSize)) { |
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1194 min_new = NewSize; |
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|
1195 } |
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1196 if (max_heap > min_new && min_heap_size() > min_new) { |
| 0 | 1197 // Unless explicitly requested otherwise, make young gen |
| 1198 // at least min_new, and at most preferred_max_new_size. | |
| 1199 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
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1200 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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|
1201 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
| 1064 | 1202 if (PrintGCDetails && Verbose) { |
|
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1203 // Too early to use gclog_or_tty |
|
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1204 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
|
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1205 } |
| 0 | 1206 } |
| 1207 // Unless explicitly requested otherwise, size old gen | |
|
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1208 // so it's NewRatio x of NewSize. |
| 0 | 1209 if (FLAG_IS_DEFAULT(OldSize)) { |
| 1210 if (max_heap > NewSize) { | |
|
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1211 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
| 1064 | 1212 if (PrintGCDetails && Verbose) { |
|
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1213 // Too early to use gclog_or_tty |
|
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|
1214 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
|
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1215 } |
| 0 | 1216 } |
| 1217 } | |
| 1218 } | |
| 1219 } | |
| 1220 // Unless explicitly requested otherwise, definitely | |
| 1221 // promote all objects surviving "tenuring_default" scavenges. | |
| 1222 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1223 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
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|
1224 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1225 } |
| 1226 // If we decided above (or user explicitly requested) | |
| 1227 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1228 // prefer minuscule survivor spaces so as not to waste | |
| 1229 // space for (non-existent) survivors | |
| 1230 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
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1231 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1232 } |
| 1233 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1234 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1235 // This is done in order to make ParNew+CMS configuration to work | |
| 1236 // with YoungPLABSize and OldPLABSize options. | |
| 1237 // See CR 6362902. | |
| 1238 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1239 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
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|
1240 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
|
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1241 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
|
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|
1242 // the value (either from the command line or ergonomics) of |
|
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|
1243 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
|
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|
1244 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
|
1145
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|
1245 } else { |
| 0 | 1246 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
| 1247 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1248 // we'll let it to take precedence. | |
| 1249 jio_fprintf(defaultStream::error_stream(), | |
|
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|
1250 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
|
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1251 " options are specified for the CMS collector." |
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1252 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
| 0 | 1253 } |
| 1254 } | |
|
1145
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1255 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
|
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|
1256 // OldPLAB sizing manually turned off: Use a larger default setting, |
|
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|
1257 // unless it was manually specified. This is because a too-low value |
|
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|
1258 // will slow down scavenges. |
|
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|
1259 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
|
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|
1260 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
|
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|
1261 } |
|
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|
1262 } |
|
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|
1263 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
|
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|
1264 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
|
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|
1265 // If either of the static initialization defaults have changed, note this |
|
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|
1266 // modification. |
|
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|
1267 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
|
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|
1268 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
|
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|
1269 } |
| 1284 | 1270 if (PrintGCDetails && Verbose) { |
| 1271 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1272 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1273 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1274 } | |
| 0 | 1275 } |
|
1145
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1276 #endif // KERNEL |
| 0 | 1277 |
|
1571
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|
1278 void set_object_alignment() { |
|
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|
1279 // Object alignment. |
|
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|
1280 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
|
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|
1281 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
|
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|
1282 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
|
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|
1283 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
|
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|
1284 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
|
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|
1285 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
|
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|
1286 |
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1287 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1288 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1289 |
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1290 // Oop encoding heap max |
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1291 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1292 |
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1293 #ifndef KERNEL |
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1294 // Set CMS global values |
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1295 CompactibleFreeListSpace::set_cms_values(); |
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1296 #endif // KERNEL |
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1297 } |
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1298 |
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1299 bool verify_object_alignment() { |
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1300 // Object alignment. |
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1301 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1302 jio_fprintf(defaultStream::error_stream(), |
|
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1303 "error: ObjectAlignmentInBytes=%d must be power of 2\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 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1308 jio_fprintf(defaultStream::error_stream(), |
|
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1309 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
|
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1310 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1311 return false; |
|
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1312 } |
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1313 // It does not make sense to have big object alignment |
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1314 // since a space lost due to alignment will be greater |
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1315 // then a saved space from compressed oops. |
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1316 if ((int)ObjectAlignmentInBytes > 256) { |
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1317 jio_fprintf(defaultStream::error_stream(), |
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1318 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1319 (int)ObjectAlignmentInBytes); |
|
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1320 return false; |
|
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1321 } |
|
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1322 // In case page size is very small. |
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1323 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1324 jio_fprintf(defaultStream::error_stream(), |
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1325 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1326 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
|
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1327 return false; |
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1328 } |
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1329 return true; |
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1330 } |
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1331 |
|
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1332 inline uintx max_heap_for_compressed_oops() { |
| 1963 | 1333 // Avoid sign flip. |
| 1334 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | |
| 1335 return 0; | |
| 1336 } | |
| 1337 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | |
| 1064 | 1338 NOT_LP64(ShouldNotReachHere(); return 0); |
|
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1339 } |
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1340 |
| 0 | 1341 bool Arguments::should_auto_select_low_pause_collector() { |
| 1342 if (UseAutoGCSelectPolicy && | |
| 1343 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1344 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1345 if (PrintGCDetails) { | |
| 1346 // Cannot use gclog_or_tty yet. | |
| 1347 tty->print_cr("Automatic selection of the low pause collector" | |
| 1348 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1349 } | |
| 1350 return true; | |
| 1351 } | |
| 1352 return false; | |
| 1353 } | |
| 1354 | |
| 1355 void Arguments::set_ergonomics_flags() { | |
| 1356 // Parallel GC is not compatible with sharing. If one specifies | |
| 1064 | 1357 // that they want sharing explicitly, do not set ergonomics flags. |
|
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1358 if (DumpSharedSpaces || RequireSharedSpaces) { |
| 0 | 1359 return; |
| 1360 } | |
| 1361 | |
| 4946 | 1362 if (os::is_server_class_machine()) { |
| 0 | 1363 // If no other collector is requested explicitly, |
| 1364 // let the VM select the collector based on | |
| 1365 // machine class and automatic selection policy. | |
| 1366 if (!UseSerialGC && | |
| 1367 !UseConcMarkSweepGC && | |
|
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1368 !UseG1GC && |
| 0 | 1369 !UseParNewGC && |
| 1370 !DumpSharedSpaces && | |
| 1371 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1372 if (should_auto_select_low_pause_collector()) { | |
| 1373 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1374 } else { | |
| 1375 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1376 } | |
| 1377 no_shared_spaces(); | |
| 1378 } | |
| 1379 } | |
|
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1380 |
| 1010 | 1381 #ifndef ZERO |
|
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1382 #ifdef _LP64 |
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1383 // Check that UseCompressedOops can be set with the max heap size allocated |
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1384 // by ergonomics. |
| 187 | 1385 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 1783 | 1386 #if !defined(COMPILER1) || defined(TIERED) |
| 2228 | 1387 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 932 | 1388 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
|
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1389 } |
| 1060 | 1390 #endif |
|
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1391 #ifdef _WIN64 |
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1392 if (UseLargePages && UseCompressedOops) { |
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1393 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1394 // mode, when large pages are specified on windows. |
|
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1395 // This flag could be switched ON if narrow oop base address is set to 0, |
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1396 // see code in Universe::initialize_heap(). |
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1397 Universe::set_narrow_oop_use_implicit_null_checks(false); |
|
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1398 } |
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1399 #endif // _WIN64 |
|
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1400 } else { |
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1401 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1402 warning("Max heap size too large for Compressed Oops"); |
|
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1403 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1404 } |
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1405 } |
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1406 // Also checks that certain machines are slower with compressed oops |
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1407 // in vm_version initialization code. |
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1408 #endif // _LP64 |
| 1010 | 1409 #endif // !ZERO |
| 0 | 1410 } |
| 1411 | |
| 1412 void Arguments::set_parallel_gc_flags() { | |
|
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1413 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 4879 | 1414 // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
| 1415 if (FLAG_IS_DEFAULT(UseParallelOldGC)) { | |
| 1416 FLAG_SET_DEFAULT(UseParallelOldGC, true); | |
| 0 | 1417 } |
| 4879 | 1418 FLAG_SET_DEFAULT(UseParallelGC, true); |
| 0 | 1419 |
| 1420 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1421 // of the physical memory, up to a maximum of 1GB. | |
| 1422 if (UseParallelGC) { | |
|
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1423 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1424 Abstract_VM_Version::parallel_worker_threads()); |
|
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1425 |
| 0 | 1426 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1427 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1428 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1429 // See CR 6362902 for details. | |
| 1430 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1431 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1432 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1433 } | |
| 1434 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1435 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1436 } | |
| 1437 } | |
| 1438 | |
| 1439 if (UseParallelOldGC) { | |
| 1440 // Par compact uses lower default values since they are treated as | |
|
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1441 // minimums. These are different defaults because of the different |
|
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1442 // interpretation and are not ergonomically set. |
| 0 | 1443 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
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1444 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1445 } |
| 1446 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
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1447 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1448 } |
| 1449 } | |
| 1450 } | |
|
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1451 if (UseNUMA) { |
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1452 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
|
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1453 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
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1454 } |
| 3885 | 1455 // For those collectors or operating systems (eg, Windows) that do |
| 1456 // not support full UseNUMA, we will map to UseNUMAInterleaving for now | |
| 1457 UseNUMAInterleaving = true; | |
|
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1458 } |
| 0 | 1459 } |
| 1460 | |
|
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1461 void Arguments::set_g1_gc_flags() { |
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1462 assert(UseG1GC, "Error"); |
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1463 #ifdef COMPILER1 |
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1464 FastTLABRefill = false; |
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1465 #endif |
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1466 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1467 Abstract_VM_Version::parallel_worker_threads()); |
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1468 if (ParallelGCThreads == 0) { |
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1469 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1470 Abstract_VM_Version::parallel_worker_threads()); |
|
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1471 } |
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1472 no_shared_spaces(); |
| 751 | 1473 |
| 1284 | 1474 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
|
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1475 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
| 1284 | 1476 } |
| 1477 if (PrintGCDetails && Verbose) { | |
| 1478 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1479 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1480 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1481 } | |
| 1356 | 1482 |
| 1483 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
| 1484 // In G1, we want the default GC overhead goal to be higher than | |
| 1485 // say in PS. So we set it here to 10%. Otherwise the heap might | |
| 1486 // be expanded more aggressively than we would like it to. In | |
| 1487 // fact, even 10% seems to not be high enough in some cases | |
| 1488 // (especially small GC stress tests that the main thing they do | |
| 1489 // is allocation). We might consider increase it further. | |
| 1490 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
| 1491 } | |
|
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1492 } |
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1493 |
| 1064 | 1494 void Arguments::set_heap_size() { |
| 1495 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
| 1496 // Deprecated flag | |
| 1497 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
| 1498 } | |
| 1499 | |
| 1500 const julong phys_mem = | |
| 1501 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
| 1502 : (julong)MaxRAM; | |
| 1503 | |
| 1504 // If the maximum heap size has not been set with -Xmx, | |
| 1505 // then set it as fraction of the size of physical memory, | |
| 1506 // respecting the maximum and minimum sizes of the heap. | |
|
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1507 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
| 1064 | 1508 julong reasonable_max = phys_mem / MaxRAMFraction; |
| 1509 | |
| 1510 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
| 1511 // Small physical memory, so use a minimum fraction of it for the heap | |
| 1512 reasonable_max = phys_mem / MinRAMFraction; | |
| 1513 } else { | |
| 1514 // Not-small physical memory, so require a heap at least | |
| 1515 // as large as MaxHeapSize | |
| 1516 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
| 1517 } | |
| 1518 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
| 1519 // Limit the heap size to ErgoHeapSizeLimit | |
| 1520 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
|
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|
1521 } |
| 1064 | 1522 if (UseCompressedOops) { |
| 1523 // Limit the heap size to the maximum possible when using compressed oops | |
| 1963 | 1524 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
| 1525 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
| 1526 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
| 1527 // but it should be not less than default MaxHeapSize. | |
| 1528 max_coop_heap -= HeapBaseMinAddress; | |
| 1529 } | |
| 1530 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
| 1064 | 1531 } |
| 1532 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
| 1533 | |
| 1534 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
| 1535 // An initial heap size was specified on the command line, | |
| 1536 // so be sure that the maximum size is consistent. Done | |
| 1537 // after call to allocatable_physical_memory because that | |
| 1538 // method might reduce the allocation size. | |
| 1539 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
| 1540 } | |
| 1541 | |
|
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1542 if (PrintGCDetails && Verbose) { |
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1543 // Cannot use gclog_or_tty yet. |
| 1064 | 1544 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
|
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1545 } |
| 1064 | 1546 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
| 1547 } | |
| 1548 | |
| 1549 // If the initial_heap_size has not been set with InitialHeapSize | |
| 1550 // or -Xms, then set it as fraction of the size of physical memory, | |
| 1551 // respecting the maximum and minimum sizes of the heap. | |
| 1552 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
|
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|
1553 julong reasonable_minimum = (julong)(OldSize + NewSize); |
|
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1554 |
|
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|
1555 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
|
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1556 |
|
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|
1557 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
|
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1558 |
| 1064 | 1559 julong reasonable_initial = phys_mem / InitialRAMFraction; |
| 1560 | |
|
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|
1561 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
| 1064 | 1562 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
| 1563 | |
| 1564 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
| 1565 | |
| 1566 if (PrintGCDetails && Verbose) { | |
| 1567 // Cannot use gclog_or_tty yet. | |
| 1568 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
|
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|
1569 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
|
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|
1570 } |
| 1064 | 1571 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
|
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|
1572 set_min_heap_size((uintx)reasonable_minimum); |
|
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1573 } |
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1574 } |
|
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|
1575 |
| 0 | 1576 // This must be called after ergonomics because we want bytecode rewriting |
| 1577 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1578 void Arguments::set_bytecode_flags() { | |
| 1579 // Better not attempt to store into a read-only space. | |
| 1580 if (UseSharedSpaces) { | |
| 1581 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1582 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1583 } | |
| 1584 | |
| 1585 if (!RewriteBytecodes) { | |
| 1586 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1587 } | |
| 1588 } | |
| 1589 | |
| 1590 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1591 void Arguments::set_aggressive_opts_flags() { | |
|
17
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|
1592 #ifdef COMPILER2 |
|
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|
1593 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
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|
1594 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
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|
1595 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
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|
1596 } |
|
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|
1597 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
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|
1598 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
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|
1599 } |
|
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|
1600 |
|
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|
1601 // Feed the cache size setting into the JDK |
|
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|
1602 char buffer[1024]; |
|
513
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|
1603 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
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|
1604 add_property(buffer); |
|
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diff
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|
1605 } |
|
416
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|
1606 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
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6649622: HotSpot Biased locking needs tuning on latest CPUs
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|
1607 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
|
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|
1608 } |
|
17
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|
1609 #endif |
|
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|
1610 |
| 0 | 1611 if (AggressiveOpts) { |
| 61 | 1612 // Sample flag setting code |
| 1613 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1614 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1615 // } | |
| 0 | 1616 } |
| 1617 } | |
| 1618 | |
| 1619 //=========================================================================================================== | |
| 1620 // Parsing of java.compiler property | |
| 1621 | |
| 1622 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1623 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1624 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1625 // is also specified. | |
| 1626 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1627 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1628 } | |
| 1629 } | |
| 1630 | |
| 1631 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1632 _sun_java_launcher = strdup(launcher); | |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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diff
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|
1633 if (strcmp("gamma", _sun_java_launcher) == 0) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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diff
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|
1634 _created_by_gamma_launcher = true; |
|
da091bb67459
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|
1635 } |
| 0 | 1636 } |
| 1637 | |
| 1638 bool Arguments::created_by_java_launcher() { | |
| 1639 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1640 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1641 } | |
| 1642 | |
|
2302
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|
1643 bool Arguments::created_by_gamma_launcher() { |
|
da091bb67459
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|
1644 return _created_by_gamma_launcher; |
|
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|
1645 } |
|
da091bb67459
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|
1646 |
| 0 | 1647 //=========================================================================================================== |
| 1648 // Parsing of main arguments | |
| 1649 | |
|
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|
1650 bool Arguments::verify_interval(uintx val, uintx min, |
|
745c853ee57f
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|
1651 uintx max, const char* name) { |
|
745c853ee57f
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|
1652 // 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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|
1653 // false, otherwise. |
|
745c853ee57f
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|
1654 if (val >= min && val <= max) { |
|
745c853ee57f
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|
1655 return true; |
|
745c853ee57f
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|
1656 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1657 jio_fprintf(defaultStream::error_stream(), |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1658 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
|
745c853ee57f
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|
1659 " and " UINTX_FORMAT "\n", |
|
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|
1660 name, val, min, max); |
|
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|
1661 return false; |
|
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|
1662 } |
|
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|
1663 |
|
1744
f8c5d1bdaad4
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|
1664 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
|
2366
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|
1665 // Returns true if given value is at least specified min threshold |
|
1744
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|
1666 // false, otherwise. |
|
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|
1667 if (val >= min ) { |
|
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|
1668 return true; |
|
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|
1669 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1670 jio_fprintf(defaultStream::error_stream(), |
|
2366
1fb790245268
6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
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|
1671 "%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
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diff
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|
1672 name, val, min); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1673 return false; |
|
f8c5d1bdaad4
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|
1674 } |
|
f8c5d1bdaad4
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|
1675 |
| 0 | 1676 bool Arguments::verify_percentage(uintx value, const char* name) { |
| 1677 if (value <= 100) { | |
| 1678 return true; | |
| 1679 } | |
| 1680 jio_fprintf(defaultStream::error_stream(), | |
| 1681 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1682 name, value); | |
| 1683 return false; | |
| 1684 } | |
| 1685 | |
| 1064 | 1686 static void force_serial_gc() { |
| 0 | 1687 FLAG_SET_DEFAULT(UseSerialGC, true); |
| 1688 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1689 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
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diff
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|
1690 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
| 0 | 1691 FLAG_SET_DEFAULT(UseParallelGC, false); |
| 1692 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
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|
1693 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1694 } |
| 1695 | |
| 1696 static bool verify_serial_gc_flags() { | |
| 1697 return (UseSerialGC && | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
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diff
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|
1698 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
|
342
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|
1699 UseParallelGC || UseParallelOldGC)); |
| 0 | 1700 } |
| 1701 | |
|
3767
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|
1702 // check if do gclog rotation |
|
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|
1703 // +UseGCLogFileRotation is a must, |
|
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|
1704 // no gc log rotation when log file not supplied or |
|
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|
1705 // NumberOfGCLogFiles is 0, or GCLogFileSize is 0 |
|
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|
1706 void check_gclog_consistency() { |
|
2a241e764894
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3349
diff
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|
1707 if (UseGCLogFileRotation) { |
|
2a241e764894
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diff
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|
1708 if ((Arguments::gc_log_filename() == NULL) || |
|
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6941923: RFE: Handling large log files produced by long running Java Applications
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|
1709 (NumberOfGCLogFiles == 0) || |
|
2a241e764894
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|
1710 (GCLogFileSize == 0)) { |
|
2a241e764894
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|
1711 jio_fprintf(defaultStream::output_stream(), |
|
3769
ef2d1b8f2dd4
7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
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3767
diff
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|
1712 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>\n" |
|
3767
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|
1713 "where num_of_file > 0 and num_of_size > 0\n" |
|
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|
1714 "GC log rotation is turned off\n"); |
|
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|
1715 UseGCLogFileRotation = false; |
|
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|
1716 } |
|
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|
1717 } |
|
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|
1718 |
|
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|
1719 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
|
2a241e764894
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|
1720 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K); |
|
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|
1721 jio_fprintf(defaultStream::output_stream(), |
|
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|
1722 "GCLogFileSize changed to minimum 8K\n"); |
|
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|
1723 } |
|
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|
1724 } |
|
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|
1725 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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|
1726 // Check consistency of GC selection |
|
28372612af5e
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|
1727 bool Arguments::check_gc_consistency() { |
|
3767
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|
1728 check_gclog_consistency(); |
|
10
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6362677: Change parallel GC collector default number of parallel GC threads.
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|
1729 bool status = true; |
|
28372612af5e
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|
1730 // Ensure that the user has not selected conflicting sets |
|
28372612af5e
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diff
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|
1731 // of collectors. [Note: this check is merely a user convenience; |
|
28372612af5e
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diff
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|
1732 // collectors over-ride each other so that only a non-conflicting |
|
28372612af5e
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0
diff
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|
1733 // set is selected; however what the user gets is not what they |
|
28372612af5e
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|
1734 // may have expected from the combination they asked for. It's |
|
28372612af5e
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diff
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|
1735 // better to reduce user confusion by not allowing them to |
|
28372612af5e
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0
diff
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|
1736 // select conflicting combinations. |
|
28372612af5e
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0
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|
1737 uint i = 0; |
|
28372612af5e
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diff
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|
1738 if (UseSerialGC) i++; |
|
28372612af5e
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diff
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|
1739 if (UseConcMarkSweepGC || UseParNewGC) i++; |
|
28372612af5e
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0
diff
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|
1740 if (UseParallelGC || UseParallelOldGC) i++; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
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751
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|
1741 if (UseG1GC) i++; |
|
10
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|
1742 if (i > 1) { |
|
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|
1743 jio_fprintf(defaultStream::error_stream(), |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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|
1744 "Conflicting collector combinations in option list; " |
|
28372612af5e
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diff
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|
1745 "please refer to the release notes for the combinations " |
|
28372612af5e
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0
diff
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|
1746 "allowed\n"); |
|
28372612af5e
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jmasa
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diff
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|
1747 status = false; |
|
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|
1748 } |
|
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|
1749 |
|
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|
1750 return status; |
|
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|
1751 } |
|
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|
1752 |
|
1744
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|
1753 // Check stack pages settings |
|
f8c5d1bdaad4
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|
1754 bool Arguments::check_stack_pages() |
|
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|
1755 { |
|
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|
1756 bool status = true; |
|
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|
1757 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
|
f8c5d1bdaad4
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|
1758 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
|
1867
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diff
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|
1759 // greater stack shadow pages can't generate instruction to bang stack |
|
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|
1760 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
|
1744
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|
1761 return status; |
|
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|
1762 } |
|
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|
1763 |
| 0 | 1764 // Check the consistency of vm_init_args |
| 1765 bool Arguments::check_vm_args_consistency() { | |
| 1766 // Method for adding checks for flag consistency. | |
| 1767 // The intent is to warn the user of all possible conflicts, | |
| 1768 // before returning an error. | |
| 1769 // Note: Needs platform-dependent factoring. | |
| 1770 bool status = true; | |
| 1771 | |
| 1772 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1773 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1774 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1775 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1776 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1777 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1778 extern void VM_Version_init(); | |
| 1779 VM_Version_init(); | |
| 1780 if (!VM_Version::has_v9()) { | |
| 1781 jio_fprintf(defaultStream::error_stream(), | |
| 1782 "V8 Machine detected, Server requires V9\n"); | |
| 1783 status = false; | |
| 1784 } | |
| 1785 #endif /* COMPILER2 && SPARC */ | |
| 1786 | |
| 1787 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1788 // builds so the cost of stack banging can be measured. | |
| 1789 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1790 if (!UseBoundThreads && !UseStackBanging) { | |
| 1791 jio_fprintf(defaultStream::error_stream(), | |
| 1792 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1793 | |
| 1794 status = false; | |
| 1795 } | |
| 1796 #endif | |
| 1797 | |
| 1798 if (TLABRefillWasteFraction == 0) { | |
| 1799 jio_fprintf(defaultStream::error_stream(), | |
| 1800 "TLABRefillWasteFraction should be a denominator, " | |
| 1801 "not " SIZE_FORMAT "\n", | |
| 1802 TLABRefillWasteFraction); | |
| 1803 status = false; | |
| 1804 } | |
| 1805 | |
|
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|
1806 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1807 "AdaptiveSizePolicyWeight"); |
|
10
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|
1808 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
|
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|
1809 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
|
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|
1810 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
|
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|
1811 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1812 |
| 1813 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1814 jio_fprintf(defaultStream::error_stream(), | |
| 1815 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1816 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1817 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1818 status = false; | |
| 1819 } | |
| 1820 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1821 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1822 | |
| 1823 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1824 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1825 } | |
| 1826 | |
|
483
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|
1827 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
|
0f773163217d
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449
diff
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|
1828 // Settings to encourage splitting. |
|
0f773163217d
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449
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|
1829 if (!FLAG_IS_CMDLINE(NewRatio)) { |
|
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|
1830 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
|
0f773163217d
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449
diff
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|
1831 } |
|
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|
1832 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
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|
1833 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
|
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|
1834 } |
|
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|
1835 } |
|
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|
1836 |
|
10
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|
1837 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
|
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|
1838 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1839 if (GCTimeLimit == 100) { |
| 1840 // Turn off gc-overhead-limit-exceeded checks | |
| 1841 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1842 } | |
| 1843 | |
|
10
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|
1844 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1845 |
|
10
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|
1846 status = status && check_gc_consistency(); |
|
1744
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|
1847 status = status && check_stack_pages(); |
| 0 | 1848 |
| 1849 if (_has_alloc_profile) { | |
| 1850 if (UseParallelGC || UseParallelOldGC) { | |
| 1851 jio_fprintf(defaultStream::error_stream(), | |
| 1852 "error: invalid argument combination.\n" | |
| 1853 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1854 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1855 status = false; | |
| 1856 } | |
| 1857 if (UseConcMarkSweepGC) { | |
| 1858 jio_fprintf(defaultStream::error_stream(), | |
| 1859 "error: invalid argument combination.\n" | |
| 1860 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1861 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1862 status = false; | |
| 1863 } | |
| 1864 } | |
| 1865 | |
| 1866 if (CMSIncrementalMode) { | |
| 1867 if (!UseConcMarkSweepGC) { | |
| 1868 jio_fprintf(defaultStream::error_stream(), | |
| 1869 "error: invalid argument combination.\n" | |
| 1870 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1871 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1872 status = false; | |
| 1873 } else { | |
|
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|
1874 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1875 "CMSIncrementalDutyCycle"); |
|
10
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|
1876 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1877 "CMSIncrementalDutyCycleMin"); |
|
10
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|
1878 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1879 "CMSIncrementalSafetyFactor"); |
|
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|
1880 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1881 "CMSIncrementalOffset"); |
|
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|
1882 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1883 "CMSExpAvgFactor"); |
| 1884 // If it was not set on the command line, set | |
| 1885 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1886 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1887 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1888 } | |
| 1889 } | |
| 1890 } | |
| 1891 | |
| 1892 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1893 // insists that we hold the requisite locks so that the iteration is | |
| 1894 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1895 // yet have a good way of acquiring and releasing these locks, | |
| 1896 // which are not visible at the CollectedHeap level. We want to | |
| 1897 // be able to acquire these locks and then do the iteration rather | |
| 1898 // than just disable the lock verification. This will be fixed under | |
| 1899 // bug 4788986. | |
| 1900 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1901 if (VerifyGCStartAt == 0) { | |
| 1902 warning("Heap verification at start-up disabled " | |
| 1903 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1904 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1905 } | |
| 1906 if (VerifyBeforeExit) { | |
| 1907 warning("Heap verification at shutdown disabled " | |
| 1908 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1909 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1910 } | |
| 1911 } | |
| 1912 | |
| 1913 // Note: only executed in non-PRODUCT mode | |
| 1914 if (!UseAsyncConcMarkSweepGC && | |
| 1915 (ExplicitGCInvokesConcurrent || | |
| 1916 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1917 jio_fprintf(defaultStream::error_stream(), | |
| 1918 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1919 " with -UseAsyncConcMarkSweepGC"); | |
| 1920 status = false; | |
| 1921 } | |
| 1922 | |
|
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1923 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
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1924 |
|
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1925 #ifndef SERIALGC |
|
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1926 if (UseG1GC) { |
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1927 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1928 "InitiatingHeapOccupancyPercent"); |
|
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1929 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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1930 "G1RefProcDrainInterval"); |
|
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1931 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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1932 "G1ConcMarkStepDurationMillis"); |
|
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1933 } |
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1934 #endif |
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1935 |
|
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1936 status = status && verify_interval(RefDiscoveryPolicy, |
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1937 ReferenceProcessor::DiscoveryPolicyMin, |
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1938 ReferenceProcessor::DiscoveryPolicyMax, |
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1939 "RefDiscoveryPolicy"); |
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1940 |
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1941 // Limit the lower bound of this flag to 1 as it is used in a division |
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1942 // expression. |
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1943 status = status && verify_interval(TLABWasteTargetPercent, |
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1944 1, 100, "TLABWasteTargetPercent"); |
|
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1945 |
|
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1946 status = status && verify_object_alignment(); |
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1947 |
| 0 | 1948 return status; |
| 1949 } | |
| 1950 | |
| 1951 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1952 const char* option_type) { | |
| 1953 if (ignore) return false; | |
| 1954 | |
| 1955 const char* spacer = " "; | |
| 1956 if (option_type == NULL) { | |
| 1957 option_type = ++spacer; // Set both to the empty string. | |
| 1958 } | |
| 1959 | |
| 1960 if (os::obsolete_option(option)) { | |
| 1961 jio_fprintf(defaultStream::error_stream(), | |
| 1962 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1963 option->optionString); | |
| 1964 return false; | |
| 1965 } else { | |
| 1966 jio_fprintf(defaultStream::error_stream(), | |
| 1967 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 1968 option->optionString); | |
| 1969 return true; | |
| 1970 } | |
| 1971 } | |
| 1972 | |
| 1973 static const char* user_assertion_options[] = { | |
| 1974 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 1975 }; | |
| 1976 | |
| 1977 static const char* system_assertion_options[] = { | |
| 1978 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 1979 }; | |
| 1980 | |
| 1981 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 1982 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 1983 // the option must match exactly. | |
| 1984 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 1985 bool tail_allowed) { | |
| 1986 for (/* empty */; *names != NULL; ++names) { | |
| 1987 if (match_option(option, *names, tail)) { | |
| 1988 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 1989 return true; | |
| 1990 } | |
| 1991 } | |
| 1992 } | |
| 1993 return false; | |
| 1994 } | |
| 1995 | |
| 1284 | 1996 bool Arguments::parse_uintx(const char* value, |
| 1997 uintx* uintx_arg, | |
| 1998 uintx min_size) { | |
| 1999 | |
| 2000 // Check the sign first since atomull() parses only unsigned values. | |
| 2001 bool value_is_positive = !(*value == '-'); | |
| 2002 | |
| 2003 if (value_is_positive) { | |
| 2004 julong n; | |
| 2005 bool good_return = atomull(value, &n); | |
| 2006 if (good_return) { | |
| 2007 bool above_minimum = n >= min_size; | |
| 2008 bool value_is_too_large = n > max_uintx; | |
| 2009 | |
| 2010 if (above_minimum && !value_is_too_large) { | |
| 2011 *uintx_arg = n; | |
| 2012 return true; | |
| 2013 } | |
| 2014 } | |
| 2015 } | |
| 2016 return false; | |
| 2017 } | |
| 2018 | |
| 0 | 2019 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
|
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2020 julong* long_arg, |
|
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|
2021 julong min_size) { |
|
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|
2022 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 2023 return check_memory_size(*long_arg, min_size); |
| 2024 } | |
| 2025 | |
| 2026 // Parse JavaVMInitArgs structure | |
| 2027 | |
| 2028 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 2029 // For components of the system classpath. | |
| 2030 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 2031 bool scp_assembly_required = false; | |
| 2032 | |
| 2033 // Save default settings for some mode flags | |
| 2034 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 2035 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 2036 Arguments::_ClipInlining = ClipInlining; | |
| 2037 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 2038 | |
|
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|
2039 // Setup flags for mixed which is the default |
|
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|
2040 set_mode_flags(_mixed); |
|
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2041 |
| 0 | 2042 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
| 2043 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 2044 if (result != JNI_OK) { | |
| 2045 return result; | |
| 2046 } | |
| 2047 | |
| 2048 // Parse JavaVMInitArgs structure passed in | |
| 2049 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 2050 if (result != JNI_OK) { | |
| 2051 return result; | |
| 2052 } | |
| 2053 | |
|
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2054 if (AggressiveOpts) { |
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2055 // Insert alt-rt.jar between user-specified bootclasspath |
|
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2056 // prefix and the default bootclasspath. os::set_boot_path() |
|
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2057 // uses meta_index_dir as the default bootclasspath directory. |
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2058 const char* altclasses_jar = "alt-rt.jar"; |
|
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2059 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
|
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2060 strlen(altclasses_jar); |
|
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2061 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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2062 strcpy(altclasses_path, get_meta_index_dir()); |
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2063 strcat(altclasses_path, altclasses_jar); |
|
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2064 scp.add_suffix_to_prefix(altclasses_path); |
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2065 scp_assembly_required = true; |
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2066 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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2067 } |
|
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|
2068 |
| 5915 | 2069 if (WhiteBoxAPI) { |
| 2070 // Append wb.jar to bootclasspath if enabled | |
| 2071 const char* wb_jar = "wb.jar"; | |
| 2072 size_t wb_path_len = strlen(get_meta_index_dir()) + 1 + | |
| 2073 strlen(wb_jar); | |
| 2074 char* wb_path = NEW_C_HEAP_ARRAY(char, wb_path_len); | |
| 2075 strcpy(wb_path, get_meta_index_dir()); | |
| 2076 strcat(wb_path, wb_jar); | |
| 2077 scp.add_suffix(wb_path); | |
| 2078 scp_assembly_required = true; | |
| 2079 FREE_C_HEAP_ARRAY(char, wb_path); | |
| 2080 } | |
| 2081 | |
| 0 | 2082 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 2083 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 2084 if (result != JNI_OK) { | |
| 2085 return result; | |
| 2086 } | |
| 2087 | |
| 2088 // Do final processing now that all arguments have been parsed | |
| 2089 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 2090 if (result != JNI_OK) { | |
| 2091 return result; | |
| 2092 } | |
| 2093 | |
| 2094 return JNI_OK; | |
| 2095 } | |
| 2096 | |
| 2097 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 2098 SysClassPath* scp_p, | |
| 2099 bool* scp_assembly_required_p, | |
| 2100 FlagValueOrigin origin) { | |
| 2101 // Remaining part of option string | |
| 2102 const char* tail; | |
| 2103 | |
| 2104 // iterate over arguments | |
| 2105 for (int index = 0; index < args->nOptions; index++) { | |
| 2106 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 2107 | |
| 2108 const JavaVMOption* option = args->options + index; | |
| 2109 | |
| 2110 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 2111 !match_option(option, "-Dsun.java.command", &tail) && | |
| 2112 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 2113 | |
| 2114 // add all jvm options to the jvm_args string. This string | |
| 2115 // is used later to set the java.vm.args PerfData string constant. | |
| 2116 // the -Djava.class.path and the -Dsun.java.command options are | |
| 2117 // omitted from jvm_args string as each have their own PerfData | |
| 2118 // string constant object. | |
| 2119 build_jvm_args(option->optionString); | |
| 2120 } | |
| 2121 | |
| 2122 // -verbose:[class/gc/jni] | |
| 2123 if (match_option(option, "-verbose", &tail)) { | |
| 2124 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 2125 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 2126 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2127 } else if (!strcmp(tail, ":gc")) { | |
| 2128 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2129 } else if (!strcmp(tail, ":jni")) { | |
| 2130 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 2131 } | |
| 2132 // -da / -ea / -disableassertions / -enableassertions | |
| 2133 // These accept an optional class/package name separated by a colon, e.g., | |
| 2134 // -da:java.lang.Thread. | |
| 2135 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 2136 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2137 if (*tail == '\0') { | |
| 2138 JavaAssertions::setUserClassDefault(enable); | |
| 2139 } else { | |
| 2140 assert(*tail == ':', "bogus match by match_option()"); | |
| 2141 JavaAssertions::addOption(tail + 1, enable); | |
| 2142 } | |
| 2143 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 2144 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 2145 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2146 JavaAssertions::setSystemClassDefault(enable); | |
| 2147 // -bootclasspath: | |
| 2148 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 2149 scp_p->reset_path(tail); | |
| 2150 *scp_assembly_required_p = true; | |
| 2151 // -bootclasspath/a: | |
| 2152 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 2153 scp_p->add_suffix(tail); | |
| 2154 *scp_assembly_required_p = true; | |
| 2155 // -bootclasspath/p: | |
| 2156 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 2157 scp_p->add_prefix(tail); | |
| 2158 *scp_assembly_required_p = true; | |
| 2159 // -Xrun | |
| 2160 } else if (match_option(option, "-Xrun", &tail)) { | |
|
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2161 if (tail != NULL) { |
| 0 | 2162 const char* pos = strchr(tail, ':'); |
| 2163 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2164 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2165 name[len] = '\0'; | |
| 2166 | |
| 2167 char *options = NULL; | |
| 2168 if(pos != NULL) { | |
| 2169 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 2170 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 2171 } | |
| 2172 #ifdef JVMTI_KERNEL | |
| 2173 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2174 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2175 } else | |
| 2176 #endif // JVMTI_KERNEL | |
| 2177 add_init_library(name, options); | |
| 2178 } | |
| 2179 // -agentlib and -agentpath | |
| 2180 } else if (match_option(option, "-agentlib:", &tail) || | |
| 2181 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 2182 if(tail != NULL) { | |
| 2183 const char* pos = strchr(tail, '='); | |
| 2184 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2185 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2186 name[len] = '\0'; | |
| 2187 | |
| 2188 char *options = NULL; | |
| 2189 if(pos != NULL) { | |
| 2190 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 2191 } | |
| 2192 #ifdef JVMTI_KERNEL | |
| 2193 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2194 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2195 } else | |
| 2196 #endif // JVMTI_KERNEL | |
| 2197 add_init_agent(name, options, is_absolute_path); | |
| 2198 | |
| 2199 } | |
| 2200 // -javaagent | |
| 2201 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 2202 if(tail != NULL) { | |
| 2203 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 2204 add_init_agent("instrument", options, false); | |
| 2205 } | |
| 2206 // -Xnoclassgc | |
| 2207 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 2208 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 2209 // -Xincgc: i-CMS | |
| 2210 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 2211 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2212 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 2213 // -Xnoincgc: no i-CMS | |
| 2214 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 2215 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2216 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 2217 // -Xconcgc | |
| 2218 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 2219 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2220 // -Xnoconcgc | |
| 2221 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 2222 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2223 // -Xbatch | |
| 2224 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 2225 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2226 // -Xmn for compatibility with other JVM vendors | |
| 2227 } else if (match_option(option, "-Xmn", &tail)) { | |
|
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2228 julong long_initial_eden_size = 0; |
| 0 | 2229 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 2230 if (errcode != arg_in_range) { | |
| 2231 jio_fprintf(defaultStream::error_stream(), | |
| 2232 "Invalid initial eden size: %s\n", option->optionString); | |
| 2233 describe_range_error(errcode); | |
| 2234 return JNI_EINVAL; | |
| 2235 } | |
| 1064 | 2236 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
| 2237 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
| 0 | 2238 // -Xms |
| 2239 } else if (match_option(option, "-Xms", &tail)) { | |
|
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2240 julong long_initial_heap_size = 0; |
| 0 | 2241 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 2242 if (errcode != arg_in_range) { | |
| 2243 jio_fprintf(defaultStream::error_stream(), | |
| 2244 "Invalid initial heap size: %s\n", option->optionString); | |
| 2245 describe_range_error(errcode); | |
| 2246 return JNI_EINVAL; | |
| 2247 } | |
| 1064 | 2248 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
| 0 | 2249 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2250 set_min_heap_size(InitialHeapSize); |
| 0 | 2251 // -Xmx |
| 2252 } else if (match_option(option, "-Xmx", &tail)) { | |
|
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2253 julong long_max_heap_size = 0; |
| 0 | 2254 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 2255 if (errcode != arg_in_range) { | |
| 2256 jio_fprintf(defaultStream::error_stream(), | |
| 2257 "Invalid maximum heap size: %s\n", option->optionString); | |
| 2258 describe_range_error(errcode); | |
| 2259 return JNI_EINVAL; | |
| 2260 } | |
| 1064 | 2261 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
| 0 | 2262 // Xmaxf |
| 2263 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 2264 int maxf = (int)(atof(tail) * 100); | |
| 2265 if (maxf < 0 || maxf > 100) { | |
| 2266 jio_fprintf(defaultStream::error_stream(), | |
| 2267 "Bad max heap free percentage size: %s\n", | |
| 2268 option->optionString); | |
| 2269 return JNI_EINVAL; | |
| 2270 } else { | |
| 2271 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 2272 } | |
| 2273 // Xminf | |
| 2274 } else if (match_option(option, "-Xminf", &tail)) { | |
| 2275 int minf = (int)(atof(tail) * 100); | |
| 2276 if (minf < 0 || minf > 100) { | |
| 2277 jio_fprintf(defaultStream::error_stream(), | |
| 2278 "Bad min heap free percentage size: %s\n", | |
| 2279 option->optionString); | |
| 2280 return JNI_EINVAL; | |
| 2281 } else { | |
| 2282 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 2283 } | |
| 2284 // -Xss | |
| 2285 } else if (match_option(option, "-Xss", &tail)) { | |
|
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2286 julong long_ThreadStackSize = 0; |
| 0 | 2287 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 2288 if (errcode != arg_in_range) { | |
| 2289 jio_fprintf(defaultStream::error_stream(), | |
| 2290 "Invalid thread stack size: %s\n", option->optionString); | |
| 2291 describe_range_error(errcode); | |
| 2292 return JNI_EINVAL; | |
| 2293 } | |
| 2294 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 2295 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 2296 round_to((int)long_ThreadStackSize, K) / K); | |
| 2297 // -Xoss | |
| 2298 } else if (match_option(option, "-Xoss", &tail)) { | |
| 2299 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 2300 // -Xmaxjitcodesize | |
|
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2301 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2302 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
|
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2303 julong long_ReservedCodeCacheSize = 0; |
| 0 | 2304 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
|
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2305 (size_t)InitialCodeCacheSize); |
| 0 | 2306 if (errcode != arg_in_range) { |
| 2307 jio_fprintf(defaultStream::error_stream(), | |
|
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2308 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2309 option->optionString, InitialCodeCacheSize/K); |
| 0 | 2310 describe_range_error(errcode); |
| 2311 return JNI_EINVAL; | |
| 2312 } | |
| 2313 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 2314 // -green | |
| 2315 } else if (match_option(option, "-green", &tail)) { | |
| 2316 jio_fprintf(defaultStream::error_stream(), | |
| 2317 "Green threads support not available\n"); | |
| 2318 return JNI_EINVAL; | |
| 2319 // -native | |
| 2320 } else if (match_option(option, "-native", &tail)) { | |
| 2321 // HotSpot always uses native threads, ignore silently for compatibility | |
| 2322 // -Xsqnopause | |
| 2323 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 2324 // EVM option, ignore silently for compatibility | |
| 2325 // -Xrs | |
| 2326 } else if (match_option(option, "-Xrs", &tail)) { | |
| 2327 // Classic/EVM option, new functionality | |
| 2328 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 2329 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 2330 // change default internal VM signals used - lower case for back compat | |
| 2331 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 2332 // -Xoptimize | |
| 2333 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 2334 // EVM option, ignore silently for compatibility | |
| 2335 // -Xprof | |
| 2336 } else if (match_option(option, "-Xprof", &tail)) { | |
| 2337 #ifndef FPROF_KERNEL | |
| 2338 _has_profile = true; | |
| 2339 #else // FPROF_KERNEL | |
| 2340 // do we have to exit? | |
| 2341 warning("Kernel VM does not support flat profiling."); | |
| 2342 #endif // FPROF_KERNEL | |
| 2343 // -Xaprof | |
| 2344 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2345 _has_alloc_profile = true; | |
| 2346 // -Xconcurrentio | |
| 2347 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2348 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2349 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2350 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2351 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2352 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2353 | |
| 2354 // -Xinternalversion | |
| 2355 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2356 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2357 VM_Version::internal_vm_info_string()); | |
| 2358 vm_exit(0); | |
| 2359 #ifndef PRODUCT | |
| 2360 // -Xprintflags | |
| 2361 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 4773 | 2362 CommandLineFlags::printFlags(tty, false); |
| 0 | 2363 vm_exit(0); |
| 2364 #endif | |
| 2365 // -D | |
| 2366 } else if (match_option(option, "-D", &tail)) { | |
| 2367 if (!add_property(tail)) { | |
| 2368 return JNI_ENOMEM; | |
| 2369 } | |
| 2370 // Out of the box management support | |
| 2371 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2372 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2373 } | |
| 2374 // -Xint | |
| 2375 } else if (match_option(option, "-Xint", &tail)) { | |
| 2376 set_mode_flags(_int); | |
| 2377 // -Xmixed | |
| 2378 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2379 set_mode_flags(_mixed); | |
| 2380 // -Xcomp | |
| 2381 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2382 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2383 set_mode_flags(_comp); | |
| 2384 | |
| 2385 // -Xshare:dump | |
| 2386 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2387 #ifdef TIERED | |
| 2388 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2389 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2390 #elif defined(COMPILER2) | |
| 2391 vm_exit_during_initialization( | |
| 2392 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2393 #elif defined(KERNEL) | |
| 2394 vm_exit_during_initialization( | |
| 2395 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2396 #else | |
| 2397 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2398 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2399 #endif | |
| 2400 // -Xshare:on | |
| 2401 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2402 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2403 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2404 // -Xshare:auto | |
| 2405 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2406 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2407 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2408 // -Xshare:off | |
| 2409 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2410 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2411 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2412 | |
| 2413 // -Xverify | |
| 2414 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2415 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2416 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2417 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2418 } else if (strcmp(tail, ":remote") == 0) { | |
| 2419 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2420 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2421 } else if (strcmp(tail, ":none") == 0) { | |
| 2422 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2423 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2424 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2425 return JNI_EINVAL; | |
| 2426 } | |
| 2427 // -Xdebug | |
| 2428 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2429 // note this flag has been used, then ignore | |
| 2430 set_xdebug_mode(true); | |
| 2431 // -Xnoagent | |
| 2432 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2433 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2434 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2435 // Bind user level threads to kernel threads (Solaris only) | |
| 2436 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2437 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2438 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2439 // ostream_init_log(), when called will use this filename | |
| 2440 // to initialize a fileStream. | |
| 2441 _gc_log_filename = strdup(tail); | |
| 2442 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2443 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2444 | |
| 2445 // JNI hooks | |
| 2446 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2447 if (!strcmp(tail, ":jni")) { | |
| 2448 CheckJNICalls = true; | |
| 2449 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2450 "check")) { | |
| 2451 return JNI_EINVAL; | |
| 2452 } | |
| 2453 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2454 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2455 } else if (match_option(option, "exit", &tail)) { | |
| 2456 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2457 } else if (match_option(option, "abort", &tail)) { | |
| 2458 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2459 // -XX:+AggressiveHeap | |
| 2460 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2461 | |
| 2462 // This option inspects the machine and attempts to set various | |
| 2463 // parameters to be optimal for long-running, memory allocation | |
| 2464 // intensive jobs. It is intended for machines with large | |
| 2465 // amounts of cpu and memory. | |
| 2466 | |
| 2467 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2468 // VM, but we may not be able to represent the total physical memory | |
| 2469 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2470 // Thus, we need to make sure we're using a julong for intermediate | |
| 2471 // calculations. | |
| 2472 julong initHeapSize; | |
| 2473 julong total_memory = os::physical_memory(); | |
| 2474 | |
| 2475 if (total_memory < (julong)256*M) { | |
| 2476 jio_fprintf(defaultStream::error_stream(), | |
| 2477 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2478 vm_exit(1); | |
| 2479 } | |
| 2480 | |
| 2481 // The heap size is half of available memory, or (at most) | |
| 2482 // all of possible memory less 160mb (leaving room for the OS | |
| 2483 // when using ISM). This is the maximum; because adaptive sizing | |
| 2484 // is turned on below, the actual space used may be smaller. | |
| 2485 | |
| 2486 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2487 total_memory - (julong)160*M); | |
| 2488 | |
| 2489 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2490 // process space. The 64bit VM version of this function is a nop. | |
| 2491 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2492 | |
| 2493 // The perm gen is separate but contiguous with the | |
| 2494 // object heap (and is reserved with it) so subtract it | |
| 2495 // from the heap size. | |
| 2496 if (initHeapSize > MaxPermSize) { | |
| 2497 initHeapSize = initHeapSize - MaxPermSize; | |
| 2498 } else { | |
| 2499 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2500 } | |
| 2501 | |
| 2502 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2503 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 1064 | 2504 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
| 0 | 2505 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2506 set_min_heap_size(initHeapSize); |
| 0 | 2507 } |
| 2508 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2509 // Make the young generation 3/8ths of the total heap. | |
| 2510 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2511 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2512 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2513 } | |
| 2514 | |
| 2515 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2516 | |
| 2517 // Increase some data structure sizes for efficiency | |
| 2518 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2519 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2520 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2521 | |
| 2522 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2523 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2524 // space per-gc-thread buffers. The default is 4kw. | |
| 2525 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2526 | |
| 2527 // OldPLABSize is the size of the buffers in the old gen that | |
| 2528 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2529 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2530 // The default size is 1kw. These buffers are rarely used, since the | |
| 2531 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2532 // are occasions when there's lots of live data in the young gen | |
| 2533 // and we end up promoting some of it. We don't have a definite | |
| 2534 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2535 // is that a bigger PLAB results in retaining something like the | |
| 2536 // original allocation order after promotion, which improves mutator | |
| 2537 // locality. A minor effect may be that larger PLABs reduce the | |
| 2538 // number of PLAB allocation events during gc. The value of 8kw | |
| 2539 // was arrived at by experimenting with specjbb. | |
| 2540 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2541 | |
| 2542 // Enable parallel GC and adaptive generation sizing | |
| 2543 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
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2544 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2545 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2546 |
| 2547 // Encourage steady state memory management | |
| 2548 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2549 | |
| 2550 // This appears to improve mutator locality | |
| 2551 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2552 | |
| 2553 // Get around early Solaris scheduling bug | |
| 2554 // (affinity vs other jobs on system) | |
| 2555 // but disallow DR and offlining (5008695). | |
| 2556 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2557 | |
| 2558 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2559 // The last option must always win. | |
| 2560 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2561 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2562 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2563 // The last option must always win. | |
| 2564 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2565 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2566 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2567 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2568 jio_fprintf(defaultStream::error_stream(), | |
| 2569 "Please use CMSClassUnloadingEnabled in place of " | |
| 2570 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2571 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2572 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2573 jio_fprintf(defaultStream::error_stream(), | |
| 2574 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2575 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2576 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2577 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2578 jio_fprintf(defaultStream::error_stream(), | |
| 2579 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2580 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2581 // The TLE options are for compatibility with 1.3 and will be | |
| 2582 // removed without notice in a future release. These options | |
| 2583 // are not to be documented. | |
| 2584 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2585 // No longer used. | |
| 2586 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2587 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2588 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2589 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2590 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2591 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2592 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2593 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2594 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2595 // No longer used. | |
| 2596 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
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2597 julong long_tlab_size = 0; |
| 0 | 2598 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2599 if (errcode != arg_in_range) { | |
| 2600 jio_fprintf(defaultStream::error_stream(), | |
| 2601 "Invalid TLAB size: %s\n", option->optionString); | |
| 2602 describe_range_error(errcode); | |
| 2603 return JNI_EINVAL; | |
| 2604 } | |
| 2605 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2606 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2607 // No longer used. | |
| 2608 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2609 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2610 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2611 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2612 SOLARIS_ONLY( | |
| 2613 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2614 warning("-XX:+UsePermISM is obsolete."); | |
| 2615 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2616 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2617 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2618 ) | |
| 2619 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2620 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2621 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2622 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2623 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2624 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2625 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 4006 | 2626 #if defined(DTRACE_ENABLED) |
| 0 | 2627 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
| 2628 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2629 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2630 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 4006 | 2631 #else // defined(DTRACE_ENABLED) |
| 0 | 2632 jio_fprintf(defaultStream::error_stream(), |
| 4006 | 2633 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
| 0 | 2634 return JNI_EINVAL; |
| 4006 | 2635 #endif // defined(DTRACE_ENABLED) |
| 0 | 2636 #ifdef ASSERT |
|
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|
2637 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
| 0 | 2638 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
| 2639 // disable scavenge before parallel mark-compact | |
| 2640 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2641 #endif | |
|
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|
2642 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
| 0 | 2643 julong cms_blocks_to_claim = (julong)atol(tail); |
| 2644 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2645 jio_fprintf(defaultStream::error_stream(), | |
|
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|
2646 "Please use -XX:OldPLABSize in place of " |
|
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|
2647 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
|
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|
2648 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
|
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|
2649 julong cms_blocks_to_claim = (julong)atol(tail); |
|
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|
2650 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
|
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|
2651 jio_fprintf(defaultStream::error_stream(), |
|
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|
2652 "Please use -XX:OldPLABSize in place of " |
| 0 | 2653 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
|
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|
2654 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
|
489
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|
2655 julong old_plab_size = 0; |
| 0 | 2656 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2657 if (errcode != arg_in_range) { | |
| 2658 jio_fprintf(defaultStream::error_stream(), | |
| 2659 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2660 describe_range_error(errcode); | |
| 2661 return JNI_EINVAL; | |
| 2662 } | |
|
489
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diff
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|
2663 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2664 jio_fprintf(defaultStream::error_stream(), |
| 2665 "Please use -XX:OldPLABSize in place of " | |
| 2666 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
|
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|
2667 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
|
489
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|
2668 julong young_plab_size = 0; |
| 0 | 2669 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2670 if (errcode != arg_in_range) { | |
| 2671 jio_fprintf(defaultStream::error_stream(), | |
| 2672 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2673 describe_range_error(errcode); | |
| 2674 return JNI_EINVAL; | |
| 2675 } | |
|
489
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diff
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|
2676 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2677 jio_fprintf(defaultStream::error_stream(), |
| 2678 "Please use -XX:YoungPLABSize in place of " | |
| 2679 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 1284 | 2680 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
| 2681 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
| 2682 julong stack_size = 0; | |
| 2683 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
| 2684 if (errcode != arg_in_range) { | |
| 2685 jio_fprintf(defaultStream::error_stream(), | |
| 2686 "Invalid mark stack size: %s\n", option->optionString); | |
| 2687 describe_range_error(errcode); | |
| 2688 return JNI_EINVAL; | |
| 2689 } | |
| 2690 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
| 2691 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
| 2692 julong max_stack_size = 0; | |
| 2693 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
| 2694 if (errcode != arg_in_range) { | |
| 2695 jio_fprintf(defaultStream::error_stream(), | |
| 2696 "Invalid maximum mark stack size: %s\n", | |
| 2697 option->optionString); | |
| 2698 describe_range_error(errcode); | |
| 2699 return JNI_EINVAL; | |
| 2700 } | |
| 2701 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
| 2702 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
| 2703 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
| 2704 uintx conc_threads = 0; | |
| 2705 if (!parse_uintx(tail, &conc_threads, 1)) { | |
| 2706 jio_fprintf(defaultStream::error_stream(), | |
| 2707 "Invalid concurrent threads: %s\n", option->optionString); | |
| 2708 return JNI_EINVAL; | |
| 2709 } | |
| 2710 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
|
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|
2711 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
| 0 | 2712 // Skip -XX:Flags= since that case has already been handled |
| 2713 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2714 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2715 return JNI_EINVAL; | |
| 2716 } | |
| 2717 } | |
| 2718 // Unknown option | |
| 2719 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2720 return JNI_ERR; | |
| 2721 } | |
| 2722 } | |
|
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2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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3349
diff
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|
2723 |
|
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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parents:
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diff
changeset
|
2724 // Change the default value for flags which have different default values |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2725 // when working with older JDKs. |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2726 if (JDK_Version::current().compare_major(6) <= 0 && |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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parents:
420
diff
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|
2727 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2728 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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diff
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|
2729 } |
|
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2730 #ifdef LINUX |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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parents:
1628
diff
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|
2731 if (JDK_Version::current().compare_major(6) <= 0 && |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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parents:
1628
diff
changeset
|
2732 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
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parents:
1628
diff
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|
2733 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2734 } |
|
3d90023429ec
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1628
diff
changeset
|
2735 #endif // LINUX |
| 0 | 2736 return JNI_OK; |
| 2737 } | |
| 2738 | |
| 2739 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2740 // This must be done after all -D arguments have been processed. | |
| 2741 scp_p->expand_endorsed(); | |
| 2742 | |
| 2743 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2744 // Assemble the bootclasspath elements into the final path. | |
| 2745 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2746 } | |
| 2747 | |
| 2748 // This must be done after all arguments have been processed. | |
| 2749 // java_compiler() true means set to "NONE" or empty. | |
| 2750 if (java_compiler() && !xdebug_mode()) { | |
| 2751 // For backwards compatibility, we switch to interpreted mode if | |
| 2752 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2753 // not specified. | |
| 2754 set_mode_flags(_int); | |
| 2755 } | |
| 2756 if (CompileThreshold == 0) { | |
| 2757 set_mode_flags(_int); | |
| 2758 } | |
| 2759 | |
| 2760 #ifndef COMPILER2 | |
| 2761 // Don't degrade server performance for footprint | |
| 2762 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2763 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2764 // No need for large granularity pages w/small heaps. | |
| 2765 // Note that large pages are enabled/disabled for both the | |
| 2766 // Java heap and the code cache. | |
| 2767 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2768 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2769 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2770 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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parents:
135
diff
changeset
|
2771 |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2772 // Tiered compilation is undefined with C1. |
|
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2773 TieredCompilation = false; |
| 0 | 2774 #else |
| 2775 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2776 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2777 } | |
| 2778 #endif | |
| 2779 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2780 // 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
|
2781 // to be true unless the property has already been set. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2782 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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diff
changeset
|
2783 if (os::is_headless_jre()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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diff
changeset
|
2784 const char* headless = Arguments::get_property("java.awt.headless"); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2785 if (headless == NULL) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2786 char envbuffer[128]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2787 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2788 if (!add_property("java.awt.headless=true")) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2789 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1679
diff
changeset
|
2790 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2791 } else { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2792 char buffer[256]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2793 strcpy(buffer, "java.awt.headless="); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2794 strcat(buffer, envbuffer); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2795 if (!add_property(buffer)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2796 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2797 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2798 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2799 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1679
diff
changeset
|
2800 } |
|
126ea7725993
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1679
diff
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|
2801 |
| 0 | 2802 if (!check_vm_args_consistency()) { |
| 2803 return JNI_ERR; | |
| 2804 } | |
| 2805 | |
| 2806 return JNI_OK; | |
| 2807 } | |
| 2808 | |
| 2809 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2810 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2811 scp_assembly_required_p); | |
| 2812 } | |
| 2813 | |
| 2814 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2815 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2816 scp_assembly_required_p); | |
| 2817 } | |
| 2818 | |
| 2819 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2820 const int N_MAX_OPTIONS = 64; | |
| 2821 const int OPTION_BUFFER_SIZE = 1024; | |
| 2822 char buffer[OPTION_BUFFER_SIZE]; | |
| 2823 | |
| 2824 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2825 // Don't check this variable if user has special privileges | |
| 2826 // (e.g. unix su command). | |
| 2827 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2828 !os::have_special_privileges()) { | |
| 2829 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2830 jio_fprintf(defaultStream::error_stream(), | |
| 2831 "Picked up %s: %s\n", name, buffer); | |
| 2832 char* rd = buffer; // pointer to the input string (rd) | |
| 2833 int i; | |
| 2834 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2835 while (isspace(*rd)) rd++; // skip whitespace | |
| 2836 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2837 | |
| 2838 // The output, option string, overwrites the input string. | |
| 2839 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2840 // input string (rd). | |
| 2841 char* wrt = rd; | |
| 2842 | |
| 2843 options[i++].optionString = wrt; // Fill in option | |
| 2844 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2845 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2846 int quote = *rd; // matching quote to look for | |
| 2847 rd++; // don't copy open quote | |
| 2848 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2849 if (*rd == 0) { // string termination means unmatched string | |
| 2850 jio_fprintf(defaultStream::error_stream(), | |
| 2851 "Unmatched quote in %s\n", name); | |
| 2852 return JNI_ERR; | |
| 2853 } | |
| 2854 *wrt++ = *rd++; // copy to option string | |
| 2855 } | |
| 2856 rd++; // don't copy close quote | |
| 2857 } else { | |
| 2858 *wrt++ = *rd++; // copy to option string | |
| 2859 } | |
| 2860 } | |
| 2861 // Need to check if we're done before writing a NULL, | |
| 2862 // because the write could be to the byte that rd is pointing to. | |
| 2863 if (*rd++ == 0) { | |
| 2864 *wrt = 0; | |
| 2865 break; | |
| 2866 } | |
| 2867 *wrt = 0; // Zero terminate option | |
| 2868 } | |
| 2869 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2870 JavaVMInitArgs vm_args; | |
| 2871 vm_args.version = JNI_VERSION_1_2; | |
| 2872 vm_args.options = options; | |
| 2873 vm_args.nOptions = i; | |
| 564 | 2874 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2875 |
| 2876 if (PrintVMOptions) { | |
| 2877 const char* tail; | |
| 2878 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2879 const JavaVMOption *option = vm_args.options + i; | |
| 2880 if (match_option(option, "-XX:", &tail)) { | |
| 2881 logOption(tail); | |
| 2882 } | |
| 2883 } | |
| 2884 } | |
| 2885 | |
| 2886 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2887 } | |
| 2888 return JNI_OK; | |
| 2889 } | |
| 2890 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2891 void Arguments::set_shared_spaces_flags() { |
| 2378 | 2892 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
| 2893 const bool might_share = must_share || UseSharedSpaces; | |
| 2894 | |
| 2895 // The string table is part of the shared archive so the size must match. | |
| 2896 if (!FLAG_IS_DEFAULT(StringTableSize)) { | |
| 2897 // Disable sharing. | |
| 2898 if (must_share) { | |
| 2899 warning("disabling shared archive %s because of non-default " | |
| 2900 "StringTableSize", DumpSharedSpaces ? "creation" : "use"); | |
| 2901 } | |
| 2902 if (might_share) { | |
| 2903 FLAG_SET_DEFAULT(DumpSharedSpaces, false); | |
| 2904 FLAG_SET_DEFAULT(RequireSharedSpaces, false); | |
| 2905 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 2906 } | |
| 2907 return; | |
| 2908 } | |
| 2909 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2910 // Check whether class data sharing settings conflict with GC, compressed oops |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2911 // or page size, and fix them up. Explicit sharing options override other |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2912 // settings. |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2913 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2914 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2915 UseCompressedOops || UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2916 if (cannot_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2917 if (must_share) { |
| 2378 | 2918 warning("selecting serial gc and disabling large pages %s" |
| 2919 "because of %s", "" LP64_ONLY("and compressed oops "), | |
| 2920 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
| 2921 force_serial_gc(); | |
| 2922 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
| 2923 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2924 } else { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2925 if (UseSharedSpaces && Verbose) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2926 warning("turning off use of shared archive because of " |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2927 "choice of garbage collector or large pages"); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2928 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2929 no_shared_spaces(); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2930 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2931 } else if (UseLargePages && might_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2932 // 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
|
2933 // there may not even be a shared archive to use. |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2934 FLAG_SET_DEFAULT(UseLargePages, false); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2935 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2936 } |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
2937 |
|
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2938 // Disable options not supported in this release, with a warning if they |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2939 // were explicitly requested on the command-line |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2940 #define UNSUPPORTED_OPTION(opt, description) \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2941 do { \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2942 if (opt) { \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2943 if (FLAG_IS_CMDLINE(opt)) { \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2944 warning(description " is disabled in this release."); \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2945 } \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2946 FLAG_SET_DEFAULT(opt, false); \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2947 } \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2948 } while(0) |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
2949 |
| 0 | 2950 // Parse entry point called from JNI_CreateJavaVM |
| 2951 | |
| 2952 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2953 | |
| 2954 // Sharing support | |
| 2955 // Construct the path to the archive | |
| 2956 char jvm_path[JVM_MAXPATHLEN]; | |
| 2957 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2958 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2959 if (end != NULL) *end = '\0'; | |
| 2960 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2961 strlen(os::file_separator()) + 20); | |
| 2962 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2963 strcpy(shared_archive_path, jvm_path); | |
| 2964 strcat(shared_archive_path, os::file_separator()); | |
| 2965 strcat(shared_archive_path, "classes"); | |
| 2966 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2967 strcat(shared_archive_path, ".jsa"); | |
| 2968 SharedArchivePath = shared_archive_path; | |
| 2969 | |
| 2970 // Remaining part of option string | |
| 2971 const char* tail; | |
| 2972 | |
| 2973 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2974 bool settings_file_specified = false; | |
| 564 | 2975 const char* flags_file; |
| 0 | 2976 int index; |
| 2977 for (index = 0; index < args->nOptions; index++) { | |
| 2978 const JavaVMOption *option = args->options + index; | |
| 2979 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2980 flags_file = tail; |
| 0 | 2981 settings_file_specified = true; |
| 2982 } | |
| 2983 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2984 PrintVMOptions = true; | |
| 2985 } | |
|
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2986 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
|
2987 PrintVMOptions = false; |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2988 } |
| 564 | 2989 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2990 IgnoreUnrecognizedVMOptions = true; | |
| 2991 } | |
| 2992 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2993 IgnoreUnrecognizedVMOptions = false; | |
| 2994 } | |
| 1150 | 2995 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
| 4773 | 2996 CommandLineFlags::printFlags(tty, false); |
| 1150 | 2997 vm_exit(0); |
| 2998 } | |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2999 |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3000 #ifndef PRODUCT |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3001 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
| 4773 | 3002 CommandLineFlags::printFlags(tty, true); |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3003 vm_exit(0); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3004 } |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3005 #endif |
| 564 | 3006 } |
| 3007 | |
| 3008 if (IgnoreUnrecognizedVMOptions) { | |
| 3009 // uncast const to modify the flag args->ignoreUnrecognized | |
| 3010 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 3011 } | |
| 3012 | |
| 3013 // Parse specified settings file | |
| 3014 if (settings_file_specified) { | |
| 3015 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 3016 return JNI_EINVAL; | |
| 3017 } | |
| 0 | 3018 } |
| 3019 | |
| 3020 // Parse default .hotspotrc settings file | |
| 3021 if (!settings_file_specified) { | |
| 3022 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 3023 return JNI_EINVAL; | |
| 3024 } | |
| 3025 } | |
| 3026 | |
| 3027 if (PrintVMOptions) { | |
| 3028 for (index = 0; index < args->nOptions; index++) { | |
| 3029 const JavaVMOption *option = args->options + index; | |
| 3030 if (match_option(option, "-XX:", &tail)) { | |
| 3031 logOption(tail); | |
| 3032 } | |
| 3033 } | |
| 3034 } | |
| 3035 | |
| 3036 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 3037 jint result = parse_vm_init_args(args); | |
| 3038 if (result != JNI_OK) { | |
| 3039 return result; | |
| 3040 } | |
| 3041 | |
|
6055
35e504cb49a6
7167625: Adjustments for SE-Embedded build process
collins
parents:
6017
diff
changeset
|
3042 #if (defined JAVASE_EMBEDDED || defined ARM) |
|
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3043 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3044 #endif |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3045 |
| 0 | 3046 #ifndef PRODUCT |
| 3047 if (TraceBytecodesAt != 0) { | |
| 3048 TraceBytecodes = true; | |
| 3049 } | |
| 3050 if (CountCompiledCalls) { | |
| 3051 if (UseCounterDecay) { | |
| 3052 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 3053 UseCounterDecay = false; | |
| 3054 } | |
| 3055 } | |
| 3056 #endif // PRODUCT | |
| 3057 | |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3058 // Transitional |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3059 if (EnableMethodHandles || AnonymousClasses) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3060 if (!EnableInvokeDynamic && !FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3061 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
|
3062 } else { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3063 EnableInvokeDynamic = true; |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3064 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3065 } |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3066 |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3067 // 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
|
3068 if (!JDK_Version::is_gte_jdk17x_version()) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3069 if (EnableInvokeDynamic) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3070 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3071 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
|
3072 } |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3073 EnableInvokeDynamic = false; |
| 710 | 3074 } |
| 3075 } | |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3076 |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3077 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3078 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3079 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
|
3080 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3081 ScavengeRootsInCode = 1; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3082 } |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3083 if (!JavaObjectsInPerm && ScavengeRootsInCode == 0) { |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3084 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3085 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
|
3086 } |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3087 ScavengeRootsInCode = 1; |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
3088 } |
| 710 | 3089 |
| 0 | 3090 if (PrintGCDetails) { |
| 3091 // Turn on -verbose:gc options as well | |
| 3092 PrintGC = true; | |
| 3093 } | |
| 3094 | |
|
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3095 if (!JDK_Version::is_gte_jdk18x_version()) { |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3096 // To avoid changing the log format for 7 updates this flag is only |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3097 // true by default in JDK8 and above. |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3098 if (FLAG_IS_DEFAULT(PrintGCCause)) { |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3099 FLAG_SET_DEFAULT(PrintGCCause, false); |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3100 } |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3101 } |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3102 |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3103 // 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
|
3104 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
|
3105 |
| 0 | 3106 #ifdef SERIALGC |
| 1064 | 3107 force_serial_gc(); |
| 0 | 3108 #endif // SERIALGC |
| 3109 #ifdef KERNEL | |
| 3110 no_shared_spaces(); | |
| 3111 #endif // KERNEL | |
| 3112 | |
| 3113 // Set flags based on ergonomics. | |
| 3114 set_ergonomics_flags(); | |
| 3115 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3116 set_shared_spaces_flags(); |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3117 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3118 // Check the GC selections again. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3119 if (!check_gc_consistency()) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3120 return JNI_EINVAL; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3121 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3122 |
| 1783 | 3123 if (TieredCompilation) { |
| 3124 set_tiered_flags(); | |
| 3125 } else { | |
| 3126 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
| 3127 if (CompilationPolicyChoice >= 2) { | |
| 3128 vm_exit_during_initialization( | |
| 3129 "Incompatible compilation policy selected", NULL); | |
| 3130 } | |
| 3131 } | |
| 3132 | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3133 #ifndef KERNEL |
|
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3134 // Set heap size based on available physical memory |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3135 set_heap_size(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3136 // Set per-collector flags |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3137 if (UseParallelGC || UseParallelOldGC) { |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3138 set_parallel_gc_flags(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3139 } 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
|
3140 set_cms_and_parnew_gc_flags(); |
|
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3141 } 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
|
3142 set_parnew_gc_flags(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3143 } else if (UseG1GC) { |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3144 set_g1_gc_flags(); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3145 } |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3146 #endif // KERNEL |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3147 |
| 0 | 3148 #ifdef SERIALGC |
| 3149 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 3150 #endif // SERIALGC | |
| 3151 | |
| 3152 // Set bytecode rewriting flags | |
| 3153 set_bytecode_flags(); | |
| 3154 | |
| 3155 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 3156 set_aggressive_opts_flags(); | |
| 3157 | |
|
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3158 // Turn off biased locking for locking debug mode flags, |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3159 // 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
|
3160 // biased locking. |
| 2331 | 3161 if (UseHeavyMonitors |
| 3162 #ifdef COMPILER1 | |
| 3163 || !UseFastLocking | |
| 3164 #endif // COMPILER1 | |
| 3165 ) { | |
|
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3166 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3167 // 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
|
3168 // can't enable biased locking here |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3169 warning("Biased Locking is not supported with locking debug flags" |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3170 "; ignoring UseBiasedLocking flag." ); |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3171 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3172 UseBiasedLocking = false; |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3173 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3174 |
| 0 | 3175 #ifdef CC_INTERP |
| 1131 | 3176 // Clear flags not supported by the C++ interpreter |
| 3177 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
| 0 | 3178 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
| 1131 | 3179 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
| 3180 #endif // CC_INTERP | |
| 3181 | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3182 #ifdef COMPILER2 |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3183 if (!UseBiasedLocking || EmitSync != 0) { |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3184 UseOptoBiasInlining = false; |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3185 } |
| 4777 | 3186 if (!EliminateLocks) { |
| 3187 EliminateNestedLocks = false; | |
| 3188 } | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3189 #endif |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3190 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3191 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3192 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
|
3193 DebugNonSafepoints = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3194 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3195 |
|
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3196 #ifndef PRODUCT |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3197 if (CompileTheWorld) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3198 // 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
|
3199 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3200 NmethodSweepFraction = 1; |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3201 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3202 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3203 #endif |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3204 |
| 0 | 3205 if (PrintCommandLineFlags) { |
| 4773 | 3206 CommandLineFlags::printSetFlags(tty); |
| 0 | 3207 } |
| 3208 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3209 // Apply CPU specific policy for the BiasedLocking |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3210 if (UseBiasedLocking) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3211 if (!VM_Version::use_biased_locking() && |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3212 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3213 UseBiasedLocking = false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3214 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3215 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3216 |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3217 // 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
|
3218 // 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
|
3219 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
|
3220 bool set = false; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3221 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3222 if (!set) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3223 FLAG_SET_DEFAULT(PauseAtExit, true); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3224 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3225 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3226 |
| 0 | 3227 return JNI_OK; |
| 3228 } | |
| 3229 | |
| 3230 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 3231 int count = 0; | |
| 3232 while(pl != NULL) { | |
| 3233 count++; | |
| 3234 pl = pl->next(); | |
| 3235 } | |
| 3236 return count; | |
| 3237 } | |
| 3238 | |
| 3239 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 3240 assert(key != NULL, "just checking"); | |
| 3241 SystemProperty* prop; | |
| 3242 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 3243 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 3244 } | |
| 3245 return NULL; | |
| 3246 } | |
| 3247 | |
| 3248 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 3249 int count = 0; | |
| 3250 const char* ret_val = NULL; | |
| 3251 | |
| 3252 while(pl != NULL) { | |
| 3253 if(count >= index) { | |
| 3254 ret_val = pl->key(); | |
| 3255 break; | |
| 3256 } | |
| 3257 count++; | |
| 3258 pl = pl->next(); | |
| 3259 } | |
| 3260 | |
| 3261 return ret_val; | |
| 3262 } | |
| 3263 | |
| 3264 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 3265 int count = 0; | |
| 3266 char* ret_val = NULL; | |
| 3267 | |
| 3268 while(pl != NULL) { | |
| 3269 if(count >= index) { | |
| 3270 ret_val = pl->value(); | |
| 3271 break; | |
| 3272 } | |
| 3273 count++; | |
| 3274 pl = pl->next(); | |
| 3275 } | |
| 3276 | |
| 3277 return ret_val; | |
| 3278 } | |
| 3279 | |
| 3280 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 3281 SystemProperty* p = *plist; | |
| 3282 if (p == NULL) { | |
| 3283 *plist = new_p; | |
| 3284 } else { | |
| 3285 while (p->next() != NULL) { | |
| 3286 p = p->next(); | |
| 3287 } | |
| 3288 p->set_next(new_p); | |
| 3289 } | |
| 3290 } | |
| 3291 | |
| 3292 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 3293 if (plist == NULL) | |
| 3294 return; | |
| 3295 | |
| 3296 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 3297 PropertyList_add(plist, new_p); | |
| 3298 } | |
| 3299 | |
| 3300 // This add maintains unique property key in the list. | |
| 691 | 3301 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 3302 if (plist == NULL) |
| 3303 return; | |
| 3304 | |
| 3305 // If property key exist then update with new value. | |
| 3306 SystemProperty* prop; | |
| 3307 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 3308 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 3309 if (append) { |
| 3310 prop->append_value(v); | |
| 3311 } else { | |
| 3312 prop->set_value(v); | |
| 3313 } | |
| 0 | 3314 return; |
| 3315 } | |
| 3316 } | |
| 3317 | |
| 3318 PropertyList_add(plist, k, v); | |
| 3319 } | |
| 3320 | |
| 3321 #ifdef KERNEL | |
| 3322 char *Arguments::get_kernel_properties() { | |
| 3323 // Find properties starting with kernel and append them to string | |
| 3324 // We need to find out how long they are first because the URL's that they | |
| 3325 // might point to could get long. | |
| 3326 int length = 0; | |
| 3327 SystemProperty* prop; | |
| 3328 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3329 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3330 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 3331 } | |
| 3332 } | |
| 3333 // Add one for null terminator. | |
| 3334 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 3335 if (length != 0) { | |
| 3336 int pos = 0; | |
| 3337 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3338 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3339 jio_snprintf(&props[pos], length-pos, | |
| 3340 "-D%s=%s ", prop->key(), prop->value()); | |
| 3341 pos = strlen(props); | |
| 3342 } | |
| 3343 } | |
| 3344 } | |
| 3345 // null terminate props in case of null | |
| 3346 props[length] = '\0'; | |
| 3347 return props; | |
| 3348 } | |
| 3349 #endif // KERNEL | |
| 3350 | |
| 3351 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 3352 // Returns true if all of the source pointed by src has been copied over to | |
| 3353 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 3354 // Notes: | |
| 3355 // 1. If the length (buflen) of the destination buffer excluding the | |
| 3356 // NULL terminator character is not long enough for holding the expanded | |
| 3357 // pid characters, it also returns false instead of returning the partially | |
| 3358 // expanded one. | |
| 3359 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 3360 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 3361 char* buf, size_t buflen) { | |
| 3362 const char* p = src; | |
| 3363 char* b = buf; | |
| 3364 const char* src_end = &src[srclen]; | |
| 3365 char* buf_end = &buf[buflen - 1]; | |
| 3366 | |
| 3367 while (p < src_end && b < buf_end) { | |
| 3368 if (*p == '%') { | |
| 3369 switch (*(++p)) { | |
| 3370 case '%': // "%%" ==> "%" | |
| 3371 *b++ = *p++; | |
| 3372 break; | |
| 3373 case 'p': { // "%p" ==> current process id | |
| 3374 // buf_end points to the character before the last character so | |
| 3375 // that we could write '\0' to the end of the buffer. | |
| 3376 size_t buf_sz = buf_end - b + 1; | |
| 3377 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 3378 | |
| 3379 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 3380 // the expanded pid, returns false. | |
| 3381 if (ret < 0 || ret >= (int)buf_sz) { | |
| 3382 return false; | |
| 3383 } else { | |
| 3384 b += ret; | |
| 3385 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 3386 if (p == src_end && b == buf_end + 1) { | |
| 3387 // reach the end of the buffer. | |
| 3388 return true; | |
| 3389 } | |
| 3390 } | |
| 3391 p++; | |
| 3392 break; | |
| 3393 } | |
| 3394 default : | |
| 3395 *b++ = '%'; | |
| 3396 } | |
| 3397 } else { | |
| 3398 *b++ = *p++; | |
| 3399 } | |
| 3400 } | |
| 3401 *b = '\0'; | |
| 3402 return (p == src_end); // return false if not all of the source was copied | |
| 3403 } |