Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | 4110c3e0c50d |
| children | ac637b7220d1 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1506
diff
changeset
|
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1506
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1506
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1506
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/javaAssertions.hpp" | |
| 27 #include "compiler/compilerOracle.hpp" | |
| 28 #include "memory/allocation.inline.hpp" | |
| 29 #include "memory/cardTableRS.hpp" | |
| 30 #include "memory/referenceProcessor.hpp" | |
| 31 #include "memory/universe.inline.hpp" | |
| 32 #include "oops/oop.inline.hpp" | |
| 33 #include "prims/jvmtiExport.hpp" | |
| 34 #include "runtime/arguments.hpp" | |
| 35 #include "runtime/globals_extension.hpp" | |
| 36 #include "runtime/java.hpp" | |
| 37 #include "services/management.hpp" | |
| 38 #include "utilities/defaultStream.hpp" | |
| 39 #include "utilities/taskqueue.hpp" | |
| 40 #ifdef TARGET_ARCH_x86 | |
| 41 # include "vm_version_x86.hpp" | |
| 42 #endif | |
| 43 #ifdef TARGET_ARCH_sparc | |
| 44 # include "vm_version_sparc.hpp" | |
| 45 #endif | |
| 46 #ifdef TARGET_ARCH_zero | |
| 47 # include "vm_version_zero.hpp" | |
| 48 #endif | |
| 49 #ifdef TARGET_OS_FAMILY_linux | |
| 50 # include "os_linux.inline.hpp" | |
| 51 #endif | |
| 52 #ifdef TARGET_OS_FAMILY_solaris | |
| 53 # include "os_solaris.inline.hpp" | |
| 54 #endif | |
| 55 #ifdef TARGET_OS_FAMILY_windows | |
| 56 # include "os_windows.inline.hpp" | |
| 57 #endif | |
| 58 #ifndef SERIALGC | |
| 59 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
| 60 #endif | |
| 0 | 61 |
| 62 #define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp" | |
| 63 #define DEFAULT_JAVA_LAUNCHER "generic" | |
| 64 | |
| 65 char** Arguments::_jvm_flags_array = NULL; | |
| 66 int Arguments::_num_jvm_flags = 0; | |
| 67 char** Arguments::_jvm_args_array = NULL; | |
| 68 int Arguments::_num_jvm_args = 0; | |
| 69 char* Arguments::_java_command = NULL; | |
| 70 SystemProperty* Arguments::_system_properties = NULL; | |
| 71 const char* Arguments::_gc_log_filename = NULL; | |
| 72 bool Arguments::_has_profile = false; | |
| 73 bool Arguments::_has_alloc_profile = false; | |
| 74 uintx Arguments::_min_heap_size = 0; | |
| 75 Arguments::Mode Arguments::_mode = _mixed; | |
| 76 bool Arguments::_java_compiler = false; | |
| 77 bool Arguments::_xdebug_mode = false; | |
| 78 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 79 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 80 int Arguments::_sun_java_launcher_pid = -1; | |
| 81 | |
| 82 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 83 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 84 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 85 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 86 bool Arguments::_ClipInlining = ClipInlining; | |
| 87 | |
| 88 char* Arguments::SharedArchivePath = NULL; | |
| 89 | |
| 90 AgentLibraryList Arguments::_libraryList; | |
| 91 AgentLibraryList Arguments::_agentList; | |
| 92 | |
| 93 abort_hook_t Arguments::_abort_hook = NULL; | |
| 94 exit_hook_t Arguments::_exit_hook = NULL; | |
| 95 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 96 | |
| 97 | |
| 98 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 99 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 100 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 101 SystemProperty *Arguments::_java_library_path = NULL; | |
| 102 SystemProperty *Arguments::_java_home = NULL; | |
| 103 SystemProperty *Arguments::_java_class_path = NULL; | |
| 104 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
| 105 | |
| 106 char* Arguments::_meta_index_path = NULL; | |
| 107 char* Arguments::_meta_index_dir = NULL; | |
| 108 | |
| 109 static bool force_client_mode = false; | |
| 110 | |
| 111 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 112 | |
| 113 static bool match_option(const JavaVMOption *option, const char* name, | |
| 114 const char** tail) { | |
| 115 int len = (int)strlen(name); | |
| 116 if (strncmp(option->optionString, name, len) == 0) { | |
| 117 *tail = option->optionString + len; | |
| 118 return true; | |
| 119 } else { | |
| 120 return false; | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 static void logOption(const char* opt) { | |
| 125 if (PrintVMOptions) { | |
| 126 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 // Process java launcher properties. | |
| 131 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 132 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 133 // Must do this before setting up other system properties, | |
| 134 // as some of them may depend on launcher type. | |
| 135 for (int index = 0; index < args->nOptions; index++) { | |
| 136 const JavaVMOption* option = args->options + index; | |
| 137 const char* tail; | |
| 138 | |
| 139 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 140 process_java_launcher_argument(tail, option->extraInfo); | |
| 141 continue; | |
| 142 } | |
| 143 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 144 _sun_java_launcher_pid = atoi(tail); | |
| 145 continue; | |
| 146 } | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 // Initialize system properties key and value. | |
| 151 void Arguments::init_system_properties() { | |
| 152 | |
| 153 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 154 "Java Virtual Machine Specification", false)); | |
| 155 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 156 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 157 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 158 | |
| 159 // following are JVMTI agent writeable properties. | |
| 160 // Properties values are set to NULL and they are | |
| 161 // os specific they are initialized in os::init_system_properties_values(). | |
| 162 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 163 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 164 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 165 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 166 _java_home = new SystemProperty("java.home", NULL, true); | |
| 167 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
| 168 | |
| 169 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 170 | |
| 171 // Add to System Property list. | |
| 172 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 173 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 174 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 175 PropertyList_add(&_system_properties, _java_library_path); | |
| 176 PropertyList_add(&_system_properties, _java_home); | |
| 177 PropertyList_add(&_system_properties, _java_class_path); | |
| 178 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
| 179 | |
| 180 // Set OS specific system properties values | |
| 181 os::init_system_properties_values(); | |
| 182 } | |
| 183 | |
|
1864
dfb38ea7da17
6988363: Rebrand vm vendor property settings (jdk7 only)
zgu
parents:
1805
diff
changeset
|
184 |
|
dfb38ea7da17
6988363: Rebrand vm vendor property settings (jdk7 only)
zgu
parents:
1805
diff
changeset
|
185 // Update/Initialize System properties after JDK version number is known |
|
dfb38ea7da17
6988363: Rebrand vm vendor property settings (jdk7 only)
zgu
parents:
1805
diff
changeset
|
186 void Arguments::init_version_specific_system_properties() { |
|
1956
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
187 enum { bufsz = 16 }; |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
188 char buffer[bufsz]; |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
189 const char* spec_vendor = "Sun Microsystems Inc."; |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
190 uint32_t spec_version = 0; |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
191 |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
192 if (JDK_Version::is_gte_jdk17x_version()) { |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
193 spec_vendor = "Oracle Corporation"; |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
194 spec_version = JDK_Version::current().major_version(); |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
195 } |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
196 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
197 |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
198 PropertyList_add(&_system_properties, |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
199 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
200 PropertyList_add(&_system_properties, |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
201 new SystemProperty("java.vm.specification.version", buffer, false)); |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
202 PropertyList_add(&_system_properties, |
|
35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
kamg
parents:
1875
diff
changeset
|
203 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
|
1864
dfb38ea7da17
6988363: Rebrand vm vendor property settings (jdk7 only)
zgu
parents:
1805
diff
changeset
|
204 } |
|
dfb38ea7da17
6988363: Rebrand vm vendor property settings (jdk7 only)
zgu
parents:
1805
diff
changeset
|
205 |
| 242 | 206 /** |
| 207 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 208 * When a flag is eliminated, it can be added to this list in order to | |
| 209 * continue accepting this flag on the command-line, while issuing a warning | |
| 210 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 211 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 212 * a flag to die correctly over JDK releases using HSX. | |
| 213 */ | |
| 214 typedef struct { | |
| 215 const char* name; | |
| 216 JDK_Version obsoleted_in; // when the flag went away | |
| 217 JDK_Version accept_until; // which version to start denying the existence | |
| 218 } ObsoleteFlag; | |
| 0 | 219 |
| 242 | 220 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 221 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 222 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 223 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 224 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 225 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 226 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 227 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 228 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 229 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 230 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 231 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 232 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 233 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 234 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 1064 | 235 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
| 236 { "DefaultInitialRAMFraction", | |
| 237 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
|
1706
9d7a8ab3736b
6962589: remove breadth first scanning code from parallel gc
tonyp
parents:
1628
diff
changeset
|
238 { "UseDepthFirstScavengeOrder", |
|
9d7a8ab3736b
6962589: remove breadth first scanning code from parallel gc
tonyp
parents:
1628
diff
changeset
|
239 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
|
1888
a7214d79fcf1
6896603: CMS/GCH: collection_attempt_is_safe() ergo should use more recent data
ysr
parents:
1832
diff
changeset
|
240 { "HandlePromotionFailure", |
|
a7214d79fcf1
6896603: CMS/GCH: collection_attempt_is_safe() ergo should use more recent data
ysr
parents:
1832
diff
changeset
|
241 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
|
a7214d79fcf1
6896603: CMS/GCH: collection_attempt_is_safe() ergo should use more recent data
ysr
parents:
1832
diff
changeset
|
242 { "MaxLiveObjectEvacuationRatio", |
|
a7214d79fcf1
6896603: CMS/GCH: collection_attempt_is_safe() ergo should use more recent data
ysr
parents:
1832
diff
changeset
|
243 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
| 242 | 244 { NULL, JDK_Version(0), JDK_Version(0) } |
| 245 }; | |
| 246 | |
| 247 // Returns true if the flag is obsolete and fits into the range specified | |
| 248 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 249 // value is filled in with the version number when the flag became | |
| 250 // obsolete so that that value can be displayed to the user. | |
| 251 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 252 int i = 0; |
| 242 | 253 assert(version != NULL, "Must provide a version buffer"); |
| 254 while (obsolete_jvm_flags[i].name != NULL) { | |
| 255 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 256 // <flag>=xxx form |
| 257 // [-|+]<flag> form | |
| 242 | 258 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 259 ((s[0] == '+' || s[0] == '-') && |
| 242 | 260 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 261 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 262 *version = flag_status.obsoleted_in; | |
| 263 return true; | |
| 264 } | |
| 0 | 265 } |
| 266 i++; | |
| 267 } | |
| 268 return false; | |
| 269 } | |
| 270 | |
| 271 // Constructs the system class path (aka boot class path) from the following | |
| 272 // components, in order: | |
| 273 // | |
| 274 // prefix // from -Xbootclasspath/p:... | |
| 275 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 276 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 277 // suffix // from -Xbootclasspath/a:... | |
| 278 // | |
| 279 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 280 // directories are added to the sysclasspath just before the base. | |
| 281 // | |
| 282 // This could be AllStatic, but it isn't needed after argument processing is | |
| 283 // complete. | |
| 284 class SysClassPath: public StackObj { | |
| 285 public: | |
| 286 SysClassPath(const char* base); | |
| 287 ~SysClassPath(); | |
| 288 | |
| 289 inline void set_base(const char* base); | |
| 290 inline void add_prefix(const char* prefix); | |
|
531
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
291 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 292 inline void add_suffix(const char* suffix); |
| 293 inline void reset_path(const char* base); | |
| 294 | |
| 295 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 296 // property. Must be called after all command-line arguments have been | |
| 297 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 298 // combined_path(). | |
| 299 void expand_endorsed(); | |
| 300 | |
| 301 inline const char* get_base() const { return _items[_scp_base]; } | |
| 302 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 303 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 304 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 305 | |
| 306 // Combine all the components into a single c-heap-allocated string; caller | |
| 307 // must free the string if/when no longer needed. | |
| 308 char* combined_path(); | |
| 309 | |
| 310 private: | |
| 311 // Utility routines. | |
| 312 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 313 static char* add_jars_to_path(char* path, const char* directory); | |
| 314 | |
| 315 inline void reset_item_at(int index); | |
| 316 | |
| 317 // Array indices for the items that make up the sysclasspath. All except the | |
| 318 // base are allocated in the C heap and freed by this class. | |
| 319 enum { | |
| 320 _scp_prefix, // from -Xbootclasspath/p:... | |
| 321 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 322 _scp_base, // the default sysclasspath | |
| 323 _scp_suffix, // from -Xbootclasspath/a:... | |
| 324 _scp_nitems // the number of items, must be last. | |
| 325 }; | |
| 326 | |
| 327 const char* _items[_scp_nitems]; | |
| 328 DEBUG_ONLY(bool _expansion_done;) | |
| 329 }; | |
| 330 | |
| 331 SysClassPath::SysClassPath(const char* base) { | |
| 332 memset(_items, 0, sizeof(_items)); | |
| 333 _items[_scp_base] = base; | |
| 334 DEBUG_ONLY(_expansion_done = false;) | |
| 335 } | |
| 336 | |
| 337 SysClassPath::~SysClassPath() { | |
| 338 // Free everything except the base. | |
| 339 for (int i = 0; i < _scp_nitems; ++i) { | |
| 340 if (i != _scp_base) reset_item_at(i); | |
| 341 } | |
| 342 DEBUG_ONLY(_expansion_done = false;) | |
| 343 } | |
| 344 | |
| 345 inline void SysClassPath::set_base(const char* base) { | |
| 346 _items[_scp_base] = base; | |
| 347 } | |
| 348 | |
| 349 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 350 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 351 } | |
| 352 | |
|
531
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
353 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
354 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
355 } |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
356 |
| 0 | 357 inline void SysClassPath::add_suffix(const char* suffix) { |
| 358 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 359 } | |
| 360 | |
| 361 inline void SysClassPath::reset_item_at(int index) { | |
| 362 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 363 if (_items[index] != NULL) { | |
| 364 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 365 _items[index] = NULL; | |
| 366 } | |
| 367 } | |
| 368 | |
| 369 inline void SysClassPath::reset_path(const char* base) { | |
| 370 // Clear the prefix and suffix. | |
| 371 reset_item_at(_scp_prefix); | |
| 372 reset_item_at(_scp_suffix); | |
| 373 set_base(base); | |
| 374 } | |
| 375 | |
| 376 //------------------------------------------------------------------------------ | |
| 377 | |
| 378 void SysClassPath::expand_endorsed() { | |
| 379 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 380 | |
| 381 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 382 if (path == NULL) { | |
| 383 path = Arguments::get_endorsed_dir(); | |
| 384 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 385 } | |
| 386 | |
| 387 char* expanded_path = NULL; | |
| 388 const char separator = *os::path_separator(); | |
| 389 const char* const end = path + strlen(path); | |
| 390 while (path < end) { | |
| 391 const char* tmp_end = strchr(path, separator); | |
| 392 if (tmp_end == NULL) { | |
| 393 expanded_path = add_jars_to_path(expanded_path, path); | |
| 394 path = end; | |
| 395 } else { | |
| 396 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 397 memcpy(dirpath, path, tmp_end - path); | |
| 398 dirpath[tmp_end - path] = '\0'; | |
| 399 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 400 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 401 path = tmp_end + 1; | |
| 402 } | |
| 403 } | |
| 404 _items[_scp_endorsed] = expanded_path; | |
| 405 DEBUG_ONLY(_expansion_done = true;) | |
| 406 } | |
| 407 | |
| 408 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 409 // c-heap-allocated string. | |
| 410 char* SysClassPath::combined_path() { | |
| 411 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 412 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 413 | |
| 414 size_t lengths[_scp_nitems]; | |
| 415 size_t total_len = 0; | |
| 416 | |
| 417 const char separator = *os::path_separator(); | |
| 418 | |
| 419 // Get the lengths. | |
| 420 int i; | |
| 421 for (i = 0; i < _scp_nitems; ++i) { | |
| 422 if (_items[i] != NULL) { | |
| 423 lengths[i] = strlen(_items[i]); | |
| 424 // Include space for the separator char (or a NULL for the last item). | |
| 425 total_len += lengths[i] + 1; | |
| 426 } | |
| 427 } | |
| 428 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 429 | |
| 430 // Copy the _items to a single string. | |
| 431 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 432 char* cp_tmp = cp; | |
| 433 for (i = 0; i < _scp_nitems; ++i) { | |
| 434 if (_items[i] != NULL) { | |
| 435 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 436 cp_tmp += lengths[i]; | |
| 437 *cp_tmp++ = separator; | |
| 438 } | |
| 439 } | |
| 440 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 441 return cp; | |
| 442 } | |
| 443 | |
| 444 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 445 char* | |
| 446 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 447 char *cp; | |
| 448 | |
| 449 assert(str != NULL, "just checking"); | |
| 450 if (path == NULL) { | |
| 451 size_t len = strlen(str) + 1; | |
| 452 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 453 memcpy(cp, str, len); // copy the trailing null | |
| 454 } else { | |
| 455 const char separator = *os::path_separator(); | |
| 456 size_t old_len = strlen(path); | |
| 457 size_t str_len = strlen(str); | |
| 458 size_t len = old_len + str_len + 2; | |
| 459 | |
| 460 if (prepend) { | |
| 461 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 462 char* cp_tmp = cp; | |
| 463 memcpy(cp_tmp, str, str_len); | |
| 464 cp_tmp += str_len; | |
| 465 *cp_tmp = separator; | |
| 466 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 467 FREE_C_HEAP_ARRAY(char, path); | |
| 468 } else { | |
| 469 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 470 char* cp_tmp = cp + old_len; | |
| 471 *cp_tmp = separator; | |
| 472 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 473 } | |
| 474 } | |
| 475 return cp; | |
| 476 } | |
| 477 | |
| 478 // Scan the directory and append any jar or zip files found to path. | |
| 479 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 480 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 481 DIR* dir = os::opendir(directory); | |
| 482 if (dir == NULL) return path; | |
| 483 | |
| 484 char dir_sep[2] = { '\0', '\0' }; | |
| 485 size_t directory_len = strlen(directory); | |
| 486 const char fileSep = *os::file_separator(); | |
| 487 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 488 | |
| 489 /* Scan the directory for jars/zips, appending them to path. */ | |
| 490 struct dirent *entry; | |
| 491 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 492 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 493 const char* name = entry->d_name; | |
| 494 const char* ext = name + strlen(name) - 4; | |
| 495 bool isJarOrZip = ext > name && | |
| 496 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 497 os::file_name_strcmp(ext, ".zip") == 0); | |
| 498 if (isJarOrZip) { | |
| 499 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 500 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 501 path = add_to_path(path, jarpath, false); | |
| 502 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 503 } | |
| 504 } | |
| 505 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 506 os::closedir(dir); | |
| 507 return path; | |
| 508 } | |
| 509 | |
| 510 // Parses a memory size specification string. | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
511 static bool atomull(const char *s, julong* result) { |
|
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
512 julong n = 0; |
|
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
513 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 514 if (args_read != 1) { |
| 515 return false; | |
| 516 } | |
| 517 while (*s != '\0' && isdigit(*s)) { | |
| 518 s++; | |
| 519 } | |
| 520 // 4705540: illegal if more characters are found after the first non-digit | |
| 521 if (strlen(s) > 1) { | |
| 522 return false; | |
| 523 } | |
| 524 switch (*s) { | |
| 525 case 'T': case 't': | |
| 526 *result = n * G * K; | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
527 // Check for overflow. |
|
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
528 if (*result/((julong)G * K) != n) return false; |
| 0 | 529 return true; |
| 530 case 'G': case 'g': | |
| 531 *result = n * G; | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
532 if (*result/G != n) return false; |
| 0 | 533 return true; |
| 534 case 'M': case 'm': | |
| 535 *result = n * M; | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
536 if (*result/M != n) return false; |
| 0 | 537 return true; |
| 538 case 'K': case 'k': | |
| 539 *result = n * K; | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
540 if (*result/K != n) return false; |
| 0 | 541 return true; |
| 542 case '\0': | |
| 543 *result = n; | |
| 544 return true; | |
| 545 default: | |
| 546 return false; | |
| 547 } | |
| 548 } | |
| 549 | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
550 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 551 if (size < min_size) return arg_too_small; |
| 552 // Check that size will fit in a size_t (only relevant on 32-bit) | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
553 if (size > max_uintx) return arg_too_big; |
| 0 | 554 return arg_in_range; |
| 555 } | |
| 556 | |
| 557 // Describe an argument out of range error | |
| 558 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 559 switch(errcode) { | |
| 560 case arg_too_big: | |
| 561 jio_fprintf(defaultStream::error_stream(), | |
| 562 "The specified size exceeds the maximum " | |
| 563 "representable size.\n"); | |
| 564 break; | |
| 565 case arg_too_small: | |
| 566 case arg_unreadable: | |
| 567 case arg_in_range: | |
| 568 // do nothing for now | |
| 569 break; | |
| 570 default: | |
| 571 ShouldNotReachHere(); | |
| 572 } | |
| 573 } | |
| 574 | |
| 575 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 576 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 577 } | |
| 578 | |
| 579 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 580 double v; | |
| 581 if (sscanf(value, "%lf", &v) != 1) { | |
| 582 return false; | |
| 583 } | |
| 584 | |
| 585 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 586 return true; | |
| 587 } | |
| 588 return false; | |
| 589 } | |
| 590 | |
| 591 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
592 julong v; |
| 0 | 593 intx intx_v; |
| 594 bool is_neg = false; | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
595 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 596 if (*value == '-') { |
| 597 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 598 return false; | |
| 599 } | |
| 600 value++; | |
| 601 is_neg = true; | |
| 602 } | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
603 if (!atomull(value, &v)) { |
| 0 | 604 return false; |
| 605 } | |
| 606 intx_v = (intx) v; | |
| 607 if (is_neg) { | |
| 608 intx_v = -intx_v; | |
| 609 } | |
| 610 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 611 return true; | |
| 612 } | |
| 613 uintx uintx_v = (uintx) v; | |
| 614 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 615 return true; | |
| 616 } | |
| 1064 | 617 uint64_t uint64_t_v = (uint64_t) v; |
| 618 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
| 619 return true; | |
| 620 } | |
| 0 | 621 return false; |
| 622 } | |
| 623 | |
| 624 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 625 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 626 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 627 FREE_C_HEAP_ARRAY(char, value); | |
| 628 return true; | |
| 629 } | |
| 630 | |
| 631 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 632 const char* old_value = ""; | |
| 633 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 634 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 635 size_t new_len = strlen(new_value); | |
| 636 const char* value; | |
| 637 char* free_this_too = NULL; | |
| 638 if (old_len == 0) { | |
| 639 value = new_value; | |
| 640 } else if (new_len == 0) { | |
| 641 value = old_value; | |
| 642 } else { | |
| 643 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 644 // each new setting adds another LINE to the switch: | |
| 645 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 646 value = buf; | |
| 647 free_this_too = buf; | |
| 648 } | |
| 649 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 650 // CommandLineFlags always returns a pointer that needs freeing. | |
| 651 FREE_C_HEAP_ARRAY(char, value); | |
| 652 if (free_this_too != NULL) { | |
| 653 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 654 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 655 } | |
| 656 return true; | |
| 657 } | |
| 658 | |
| 659 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 660 | |
| 661 // range of acceptable characters spelled out for portability reasons | |
| 662 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 663 #define BUFLEN 255 | |
| 664 char name[BUFLEN+1]; | |
| 665 char dummy; | |
| 666 | |
| 667 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 668 return set_bool_flag(name, false, origin); | |
| 669 } | |
| 670 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 671 return set_bool_flag(name, true, origin); | |
| 672 } | |
| 673 | |
| 674 char punct; | |
| 675 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 676 const char* value = strchr(arg, '=') + 1; | |
| 677 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 678 if (flag != NULL && flag->is_ccstr()) { | |
| 679 if (flag->ccstr_accumulates()) { | |
| 680 return append_to_string_flag(name, value, origin); | |
| 681 } else { | |
| 682 if (value[0] == '\0') { | |
| 683 value = NULL; | |
| 684 } | |
| 685 return set_string_flag(name, value, origin); | |
| 686 } | |
| 687 } | |
| 688 } | |
| 689 | |
| 690 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 691 const char* value = strchr(arg, '=') + 1; | |
| 692 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 693 if (value[0] == '\0') { | |
| 694 value = NULL; | |
| 695 } | |
| 696 return set_string_flag(name, value, origin); | |
| 697 } | |
| 698 | |
| 699 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 700 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 701 #define NUMBER_RANGE "[0123456789]" | |
| 702 char value[BUFLEN + 1]; | |
| 703 char value2[BUFLEN + 1]; | |
| 704 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 705 // Looks like a floating-point number -- try again with more lenient format string | |
| 706 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 707 return set_fp_numeric_flag(name, value, origin); | |
| 708 } | |
| 709 } | |
| 710 | |
| 711 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 712 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 713 return set_numeric_flag(name, value, origin); | |
| 714 } | |
| 715 | |
| 716 return false; | |
| 717 } | |
| 718 | |
| 719 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 720 assert(bldarray != NULL, "illegal argument"); | |
| 721 | |
| 722 if (arg == NULL) { | |
| 723 return; | |
| 724 } | |
| 725 | |
| 726 int index = *count; | |
| 727 | |
| 728 // expand the array and add arg to the last element | |
| 729 (*count)++; | |
| 730 if (*bldarray == NULL) { | |
| 731 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 732 } else { | |
| 733 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 734 } | |
| 735 (*bldarray)[index] = strdup(arg); | |
| 736 } | |
| 737 | |
| 738 void Arguments::build_jvm_args(const char* arg) { | |
| 739 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 740 } | |
| 741 | |
| 742 void Arguments::build_jvm_flags(const char* arg) { | |
| 743 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 744 } | |
| 745 | |
| 746 // utility function to return a string that concatenates all | |
| 747 // strings in a given char** array | |
| 748 const char* Arguments::build_resource_string(char** args, int count) { | |
| 749 if (args == NULL || count == 0) { | |
| 750 return NULL; | |
| 751 } | |
| 752 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 753 for (int i = 1; i < count; i++) { | |
| 754 length += strlen(args[i]) + 1; // add 1 for a space | |
| 755 } | |
| 756 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 757 strcpy(s, args[0]); | |
| 758 for (int j = 1; j < count; j++) { | |
| 759 strcat(s, " "); | |
| 760 strcat(s, args[j]); | |
| 761 } | |
| 762 return (const char*) s; | |
| 763 } | |
| 764 | |
| 765 void Arguments::print_on(outputStream* st) { | |
| 766 st->print_cr("VM Arguments:"); | |
| 767 if (num_jvm_flags() > 0) { | |
| 768 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 769 } | |
| 770 if (num_jvm_args() > 0) { | |
| 771 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 772 } | |
| 773 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 774 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 775 } | |
| 776 | |
| 777 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 778 if (_num_jvm_flags > 0) { | |
| 779 for (int i=0; i < _num_jvm_flags; i++) { | |
| 780 st->print("%s ", _jvm_flags_array[i]); | |
| 781 } | |
| 782 st->print_cr(""); | |
| 783 } | |
| 784 } | |
| 785 | |
| 786 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 787 if (_num_jvm_args > 0) { | |
| 788 for (int i=0; i < _num_jvm_args; i++) { | |
| 789 st->print("%s ", _jvm_args_array[i]); | |
| 790 } | |
| 791 st->print_cr(""); | |
| 792 } | |
| 793 } | |
| 794 | |
| 242 | 795 bool Arguments::process_argument(const char* arg, |
| 796 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 797 | |
| 798 JDK_Version since = JDK_Version(); | |
| 0 | 799 |
| 800 if (parse_argument(arg, origin)) { | |
| 801 // do nothing | |
| 242 | 802 } else if (is_newly_obsolete(arg, &since)) { |
| 803 enum { bufsize = 256 }; | |
| 804 char buffer[bufsize]; | |
| 805 since.to_string(buffer, bufsize); | |
| 0 | 806 jio_fprintf(defaultStream::error_stream(), |
| 242 | 807 "Warning: The flag %s has been EOL'd as of %s and will" |
| 808 " be ignored\n", arg, buffer); | |
| 0 | 809 } else { |
| 810 if (!ignore_unrecognized) { | |
| 811 jio_fprintf(defaultStream::error_stream(), | |
| 812 "Unrecognized VM option '%s'\n", arg); | |
| 813 // allow for commandline "commenting out" options like -XX:#+Verbose | |
| 814 if (strlen(arg) == 0 || arg[0] != '#') { | |
| 815 return false; | |
| 816 } | |
| 817 } | |
| 818 } | |
| 819 return true; | |
| 820 } | |
| 821 | |
| 822 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 823 FILE* stream = fopen(file_name, "rb"); | |
| 824 if (stream == NULL) { | |
| 825 if (should_exist) { | |
| 826 jio_fprintf(defaultStream::error_stream(), | |
| 827 "Could not open settings file %s\n", file_name); | |
| 828 return false; | |
| 829 } else { | |
| 830 return true; | |
| 831 } | |
| 832 } | |
| 833 | |
| 834 char token[1024]; | |
| 835 int pos = 0; | |
| 836 | |
| 837 bool in_white_space = true; | |
| 838 bool in_comment = false; | |
| 839 bool in_quote = false; | |
| 840 char quote_c = 0; | |
| 841 bool result = true; | |
| 842 | |
| 843 int c = getc(stream); | |
| 844 while(c != EOF) { | |
| 845 if (in_white_space) { | |
| 846 if (in_comment) { | |
| 847 if (c == '\n') in_comment = false; | |
| 848 } else { | |
| 849 if (c == '#') in_comment = true; | |
| 850 else if (!isspace(c)) { | |
| 851 in_white_space = false; | |
| 852 token[pos++] = c; | |
| 853 } | |
| 854 } | |
| 855 } else { | |
| 856 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 857 // token ends at newline, or at unquoted whitespace | |
| 858 // this allows a way to include spaces in string-valued options | |
| 859 token[pos] = '\0'; | |
| 860 logOption(token); | |
| 861 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 862 build_jvm_flags(token); | |
| 863 pos = 0; | |
| 864 in_white_space = true; | |
| 865 in_quote = false; | |
| 866 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 867 in_quote = true; | |
| 868 quote_c = c; | |
| 869 } else if (in_quote && (c == quote_c)) { | |
| 870 in_quote = false; | |
| 871 } else { | |
| 872 token[pos++] = c; | |
| 873 } | |
| 874 } | |
| 875 c = getc(stream); | |
| 876 } | |
| 877 if (pos > 0) { | |
| 878 token[pos] = '\0'; | |
| 879 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 880 build_jvm_flags(token); | |
| 881 } | |
| 882 fclose(stream); | |
| 883 return result; | |
| 884 } | |
| 885 | |
| 886 //============================================================================================================= | |
| 887 // Parsing of properties (-D) | |
| 888 | |
| 889 const char* Arguments::get_property(const char* key) { | |
| 890 return PropertyList_get_value(system_properties(), key); | |
| 891 } | |
| 892 | |
| 893 bool Arguments::add_property(const char* prop) { | |
| 894 const char* eq = strchr(prop, '='); | |
| 895 char* key; | |
| 896 // ns must be static--its address may be stored in a SystemProperty object. | |
| 897 const static char ns[1] = {0}; | |
| 898 char* value = (char *)ns; | |
| 899 | |
| 900 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 901 key = AllocateHeap(key_len + 1, "add_property"); | |
| 902 strncpy(key, prop, key_len); | |
| 903 key[key_len] = '\0'; | |
| 904 | |
| 905 if (eq != NULL) { | |
| 906 size_t value_len = strlen(prop) - key_len - 1; | |
| 907 value = AllocateHeap(value_len + 1, "add_property"); | |
| 908 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 909 } | |
| 910 | |
| 911 if (strcmp(key, "java.compiler") == 0) { | |
| 912 process_java_compiler_argument(value); | |
| 913 FreeHeap(key); | |
| 914 if (eq != NULL) { | |
| 915 FreeHeap(value); | |
| 916 } | |
| 917 return true; | |
| 691 | 918 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 919 _java_command = value; |
| 920 | |
| 921 // don't add this property to the properties exposed to the java application | |
| 922 FreeHeap(key); | |
| 923 return true; | |
| 691 | 924 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 925 // launcher.pid property is private and is processed |
| 926 // in process_sun_java_launcher_properties(); | |
| 927 // the sun.java.launcher property is passed on to the java application | |
| 928 FreeHeap(key); | |
| 929 if (eq != NULL) { | |
| 930 FreeHeap(value); | |
| 931 } | |
| 932 return true; | |
| 691 | 933 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 934 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 935 // its value without going through the property list or making a Java call. | |
| 936 _java_vendor_url_bug = value; | |
| 691 | 937 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 938 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 939 return true; | |
| 0 | 940 } |
| 941 // Create new property and add at the end of the list | |
| 942 PropertyList_unique_add(&_system_properties, key, value); | |
| 943 return true; | |
| 944 } | |
| 945 | |
| 946 //=========================================================================================================== | |
| 947 // Setting int/mixed/comp mode flags | |
| 948 | |
| 949 void Arguments::set_mode_flags(Mode mode) { | |
| 950 // Set up default values for all flags. | |
| 951 // If you add a flag to any of the branches below, | |
| 952 // add a default value for it here. | |
| 953 set_java_compiler(false); | |
| 954 _mode = mode; | |
| 955 | |
| 956 // Ensure Agent_OnLoad has the correct initial values. | |
| 957 // This may not be the final mode; mode may change later in onload phase. | |
| 958 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
| 691 | 959 (char*)Abstract_VM_Version::vm_info_string(), false); |
| 0 | 960 |
| 961 UseInterpreter = true; | |
| 962 UseCompiler = true; | |
| 963 UseLoopCounter = true; | |
| 964 | |
| 965 // Default values may be platform/compiler dependent - | |
| 966 // use the saved values | |
| 967 ClipInlining = Arguments::_ClipInlining; | |
| 968 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 969 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 970 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 971 | |
| 972 // Change from defaults based on mode | |
| 973 switch (mode) { | |
| 974 default: | |
| 975 ShouldNotReachHere(); | |
| 976 break; | |
| 977 case _int: | |
| 978 UseCompiler = false; | |
| 979 UseLoopCounter = false; | |
| 980 AlwaysCompileLoopMethods = false; | |
| 981 UseOnStackReplacement = false; | |
| 982 break; | |
| 983 case _mixed: | |
| 984 // same as default | |
| 985 break; | |
| 986 case _comp: | |
| 987 UseInterpreter = false; | |
| 988 BackgroundCompilation = false; | |
| 989 ClipInlining = false; | |
| 990 break; | |
| 991 } | |
| 992 } | |
| 993 | |
| 994 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 995 // incompatible command line options were chosen. | |
| 996 | |
| 997 static void no_shared_spaces() { | |
| 998 if (RequireSharedSpaces) { | |
| 999 jio_fprintf(defaultStream::error_stream(), | |
| 1000 "Class data sharing is inconsistent with other specified options.\n"); | |
| 1001 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 1002 } else { | |
| 1003 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 1004 } | |
| 1005 } | |
| 1006 | |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1007 void Arguments::check_compressed_oops_compat() { |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1008 #ifdef _LP64 |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1009 assert(UseCompressedOops, "Precondition"); |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1010 # if defined(COMPILER1) && !defined(TIERED) |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1011 // Until c1 supports compressed oops turn them off. |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1012 FLAG_SET_DEFAULT(UseCompressedOops, false); |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1013 # else |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1014 // Is it on by default or set on ergonomically |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1015 bool is_on_by_default = FLAG_IS_DEFAULT(UseCompressedOops) || FLAG_IS_ERGO(UseCompressedOops); |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1016 |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1017 // Tiered currently doesn't work with compressed oops |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1018 if (TieredCompilation) { |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1019 if (is_on_by_default) { |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1020 FLAG_SET_DEFAULT(UseCompressedOops, false); |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1021 return; |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1022 } else { |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1023 vm_exit_during_initialization( |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1024 "Tiered compilation is not supported with compressed oops yet", NULL); |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1025 } |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1026 } |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1027 |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1028 // If dumping an archive or forcing its use, disable compressed oops if possible |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1029 if (DumpSharedSpaces || RequireSharedSpaces) { |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1030 if (is_on_by_default) { |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1031 FLAG_SET_DEFAULT(UseCompressedOops, false); |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1032 return; |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1033 } else { |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1034 vm_exit_during_initialization( |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1035 "Class Data Sharing is not supported with compressed oops yet", NULL); |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1036 } |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1037 } else if (UseSharedSpaces) { |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1038 // UseSharedSpaces is on by default. With compressed oops, we turn it off. |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1039 FLAG_SET_DEFAULT(UseSharedSpaces, false); |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1040 } |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1041 |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1042 # endif // defined(COMPILER1) && !defined(TIERED) |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1043 #endif // _LP64 |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1044 } |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1045 |
| 1783 | 1046 void Arguments::set_tiered_flags() { |
| 1047 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { | |
| 1048 FLAG_SET_DEFAULT(CompilationPolicyChoice, 2); | |
| 1049 } | |
| 1050 if (CompilationPolicyChoice < 2) { | |
| 1051 vm_exit_during_initialization( | |
| 1052 "Incompatible compilation policy selected", NULL); | |
| 1053 } | |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
1054 // Increase the code cache size - tiered compiles a lot more. |
| 1783 | 1055 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
| 1056 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
| 1057 } | |
| 1058 } | |
| 1059 | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1060 #ifndef KERNEL |
| 0 | 1061 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
| 1062 // if it's not explictly set or unset. If the user has chosen | |
| 1063 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 1064 // set it, unless this is a single cpu machine. | |
| 1065 void Arguments::set_parnew_gc_flags() { | |
| 1064 | 1066 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1067 "control point invariant"); |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1068 assert(UseParNewGC, "Error"); |
| 0 | 1069 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1070 // Turn off AdaptiveSizePolicy by default for parnew until it is |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1071 // complete. |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1072 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1073 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1074 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1075 |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1076 if (ParallelGCThreads == 0) { |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1077 FLAG_SET_DEFAULT(ParallelGCThreads, |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1078 Abstract_VM_Version::parallel_worker_threads()); |
| 1064 | 1079 if (ParallelGCThreads == 1) { |
| 0 | 1080 FLAG_SET_DEFAULT(UseParNewGC, false); |
| 1064 | 1081 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
| 0 | 1082 } |
| 1083 } | |
| 1064 | 1084 if (UseParNewGC) { |
| 1085 // CDS doesn't work with ParNew yet | |
| 0 | 1086 no_shared_spaces(); |
| 1087 | |
| 695 | 1088 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
| 0 | 1089 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
| 1090 // we set them to 1024 and 1024. | |
| 1091 // See CR 6362902. | |
| 1092 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 1093 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 1094 } | |
| 1095 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1096 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 1097 } | |
| 1098 | |
| 1064 | 1099 // AlwaysTenure flag should make ParNew promote all at first collection. |
| 0 | 1100 // See CR 6362902. |
| 1101 if (AlwaysTenure) { | |
| 1102 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 1103 } | |
| 695 | 1104 // When using compressed oops, we use local overflow stacks, |
| 1105 // rather than using a global overflow list chained through | |
| 1106 // the klass word of the object's pre-image. | |
| 1107 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
| 1108 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
| 1109 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
| 1110 } | |
| 1111 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
| 1112 } | |
| 1113 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
| 0 | 1114 } |
| 1115 } | |
| 1116 | |
| 1117 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1118 // sparc/solaris for certain applications, but would gain from | |
| 1119 // further optimization and tuning efforts, and would almost | |
| 1120 // certainly gain from analysis of platform and environment. | |
| 1121 void Arguments::set_cms_and_parnew_gc_flags() { | |
| 1064 | 1122 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1123 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1124 |
| 0 | 1125 // If we are using CMS, we prefer to UseParNewGC, |
| 1126 // unless explicitly forbidden. | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1127 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1128 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1129 } |
| 1130 | |
| 1131 // Turn off AdaptiveSizePolicy by default for cms until it is | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1132 // complete. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1133 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
| 0 | 1134 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
| 1135 } | |
| 1136 | |
| 1137 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1138 // as needed. | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1139 if (UseParNewGC) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1140 set_parnew_gc_flags(); |
| 0 | 1141 } |
| 1142 | |
| 1143 // Now make adjustments for CMS | |
| 1144 size_t young_gen_per_worker; | |
| 1145 intx new_ratio; | |
| 1146 size_t min_new_default; | |
| 1147 intx tenuring_default; | |
| 1148 if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0 | |
| 1149 if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) { | |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1150 FLAG_SET_ERGO(intx, CMSYoungGenPerWorker, 4*M); |
| 0 | 1151 } |
| 1152 young_gen_per_worker = 4*M; | |
| 1153 new_ratio = (intx)15; | |
| 1154 min_new_default = 4*M; | |
| 1155 tenuring_default = (intx)0; | |
| 1156 } else { // new defaults: "new" as of 6.0 | |
| 1157 young_gen_per_worker = CMSYoungGenPerWorker; | |
| 1158 new_ratio = (intx)7; | |
| 1159 min_new_default = 16*M; | |
| 1160 tenuring_default = (intx)4; | |
| 1161 } | |
| 1162 | |
| 1163 // Preferred young gen size for "short" pauses | |
| 1164 const uintx parallel_gc_threads = | |
| 1165 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1166 const size_t preferred_max_new_size_unaligned = | |
| 1167 ScaleForWordSize(young_gen_per_worker * parallel_gc_threads); | |
| 1168 const size_t preferred_max_new_size = | |
| 1169 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); | |
| 1170 | |
| 1171 // Unless explicitly requested otherwise, size young gen | |
| 1172 // for "short" pauses ~ 4M*ParallelGCThreads | |
|
886
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1173 |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1174 // If either MaxNewSize or NewRatio is set on the command line, |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1175 // assume the user is trying to set the size of the young gen. |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1176 |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1177 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1178 |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1179 // Set MaxNewSize to our calculated preferred_max_new_size unless |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1180 // NewSize was set on the command line and it is larger than |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1181 // preferred_max_new_size. |
| 0 | 1182 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1183 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1184 } else { |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1185 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1186 } |
| 1064 | 1187 if (PrintGCDetails && Verbose) { |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1188 // Too early to use gclog_or_tty |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1189 tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
|
886
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1190 } |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1191 |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1192 // Unless explicitly requested otherwise, prefer a large |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1193 // Old to Young gen size so as to shift the collection load |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1194 // to the old generation concurrent collector |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1195 |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1196 // If this is only guarded by FLAG_IS_DEFAULT(NewRatio) |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1197 // then NewSize and OldSize may be calculated. That would |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1198 // generally lead to some differences with ParNewGC for which |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1199 // there was no obvious reason. Also limit to the case where |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1200 // MaxNewSize has not been set. |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1201 |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1202 FLAG_SET_ERGO(intx, NewRatio, MAX2(NewRatio, new_ratio)); |
| 0 | 1203 |
|
886
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1204 // Code along this path potentially sets NewSize and OldSize |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1205 |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1206 // Calculate the desired minimum size of the young gen but if |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1207 // NewSize has been set on the command line, use it here since |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1208 // it should be the final value. |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1209 size_t min_new; |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1210 if (FLAG_IS_DEFAULT(NewSize)) { |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1211 min_new = align_size_up(ScaleForWordSize(min_new_default), |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1212 os::vm_page_size()); |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1213 } else { |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1214 min_new = NewSize; |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1215 } |
| 1064 | 1216 size_t prev_initial_size = InitialHeapSize; |
| 1217 if (prev_initial_size != 0 && prev_initial_size < min_new + OldSize) { | |
| 1218 FLAG_SET_ERGO(uintx, InitialHeapSize, min_new + OldSize); | |
| 0 | 1219 // Currently minimum size and the initial heap sizes are the same. |
| 1064 | 1220 set_min_heap_size(InitialHeapSize); |
| 0 | 1221 if (PrintGCDetails && Verbose) { |
| 1222 warning("Initial heap size increased to " SIZE_FORMAT " M from " | |
| 1223 SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", | |
| 1064 | 1224 InitialHeapSize/M, prev_initial_size/M); |
| 0 | 1225 } |
| 1226 } | |
|
886
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1227 |
| 0 | 1228 // MaxHeapSize is aligned down in collectorPolicy |
|
886
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1229 size_t max_heap = |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1230 align_size_down(MaxHeapSize, |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1231 CardTableRS::ct_max_alignment_constraint()); |
| 0 | 1232 |
| 1064 | 1233 if (PrintGCDetails && Verbose) { |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1234 // Too early to use gclog_or_tty |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1235 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1236 " initial_heap_size: " SIZE_FORMAT |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1237 " max_heap: " SIZE_FORMAT, |
| 1064 | 1238 min_heap_size(), InitialHeapSize, max_heap); |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1239 } |
| 0 | 1240 if (max_heap > min_new) { |
| 1241 // Unless explicitly requested otherwise, make young gen | |
| 1242 // at least min_new, and at most preferred_max_new_size. | |
| 1243 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1244 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1245 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
| 1064 | 1246 if (PrintGCDetails && Verbose) { |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1247 // Too early to use gclog_or_tty |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1248 tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1249 } |
| 0 | 1250 } |
| 1251 // Unless explicitly requested otherwise, size old gen | |
| 1252 // so that it's at least 3X of NewSize to begin with; | |
| 1253 // later NewRatio will decide how it grows; see above. | |
| 1254 if (FLAG_IS_DEFAULT(OldSize)) { | |
| 1255 if (max_heap > NewSize) { | |
| 1064 | 1256 FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); |
| 1257 if (PrintGCDetails && Verbose) { | |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1258 // Too early to use gclog_or_tty |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1259 tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1260 } |
| 0 | 1261 } |
| 1262 } | |
| 1263 } | |
| 1264 } | |
| 1265 // Unless explicitly requested otherwise, definitely | |
| 1266 // promote all objects surviving "tenuring_default" scavenges. | |
| 1267 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1268 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1269 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1270 } |
| 1271 // If we decided above (or user explicitly requested) | |
| 1272 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1273 // prefer minuscule survivor spaces so as not to waste | |
| 1274 // space for (non-existent) survivors | |
| 1275 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1276 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1277 } |
| 1278 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1279 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1280 // This is done in order to make ParNew+CMS configuration to work | |
| 1281 // with YoungPLABSize and OldPLABSize options. | |
| 1282 // See CR 6362902. | |
| 1283 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1284 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1285 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1286 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1287 // the value (either from the command line or ergonomics) of |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1288 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1289 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1290 } else { |
| 0 | 1291 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
| 1292 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1293 // we'll let it to take precedence. | |
| 1294 jio_fprintf(defaultStream::error_stream(), | |
|
886
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1295 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1296 " options are specified for the CMS collector." |
|
061cd4d965fc
6862534: -XX:NewRatio completely ignored when combined with -XX:+UseConcMarkSweepG
jmasa
parents:
845
diff
changeset
|
1297 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
| 0 | 1298 } |
| 1299 } | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1300 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1301 // OldPLAB sizing manually turned off: Use a larger default setting, |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1302 // unless it was manually specified. This is because a too-low value |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1303 // will slow down scavenges. |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1304 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1305 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1306 } |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1307 } |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1308 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1309 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1310 // If either of the static initialization defaults have changed, note this |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1311 // modification. |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1312 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1313 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1314 } |
| 1284 | 1315 if (PrintGCDetails && Verbose) { |
| 1316 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1317 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1318 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1319 } | |
| 0 | 1320 } |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
1321 #endif // KERNEL |
| 0 | 1322 |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1323 void 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
|
1324 // Object alignment. |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1325 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1326 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1327 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1328 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1329 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1330 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1331 |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1332 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1333 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1334 |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1335 // Oop encoding heap max |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1336 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1337 |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1338 #ifndef KERNEL |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1339 // Set CMS global values |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1340 CompactibleFreeListSpace::set_cms_values(); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1341 #endif // KERNEL |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1342 } |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1343 |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1344 bool verify_object_alignment() { |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1345 // Object alignment. |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1346 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1347 jio_fprintf(defaultStream::error_stream(), |
|
1829
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1348 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1349 (int)ObjectAlignmentInBytes); |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1350 return false; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1351 } |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1352 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1353 jio_fprintf(defaultStream::error_stream(), |
|
1829
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1354 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1355 (int)ObjectAlignmentInBytes, BytesPerLong); |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1356 return false; |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1357 } |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1358 // It does not make sense to have big object alignment |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1359 // since a space lost due to alignment will be greater |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1360 // then a saved space from compressed oops. |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1361 if ((int)ObjectAlignmentInBytes > 256) { |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1362 jio_fprintf(defaultStream::error_stream(), |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1363 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1364 (int)ObjectAlignmentInBytes); |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1365 return false; |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1366 } |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1367 // In case page size is very small. |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1368 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1369 jio_fprintf(defaultStream::error_stream(), |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1370 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
|
fe08403130db
6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big
kvn
parents:
1796
diff
changeset
|
1371 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1372 return false; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1373 } |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1374 return true; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1375 } |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1376 |
|
135
b7268662a986
6689523: max heap calculation for compressed oops is off by MaxPermSize
coleenp
parents:
113
diff
changeset
|
1377 inline uintx max_heap_for_compressed_oops() { |
| 1963 | 1378 // Avoid sign flip. |
| 1379 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | |
| 1380 return 0; | |
| 1381 } | |
| 1382 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | |
| 1064 | 1383 NOT_LP64(ShouldNotReachHere(); return 0); |
|
135
b7268662a986
6689523: max heap calculation for compressed oops is off by MaxPermSize
coleenp
parents:
113
diff
changeset
|
1384 } |
|
b7268662a986
6689523: max heap calculation for compressed oops is off by MaxPermSize
coleenp
parents:
113
diff
changeset
|
1385 |
| 0 | 1386 bool Arguments::should_auto_select_low_pause_collector() { |
| 1387 if (UseAutoGCSelectPolicy && | |
| 1388 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1389 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1390 if (PrintGCDetails) { | |
| 1391 // Cannot use gclog_or_tty yet. | |
| 1392 tty->print_cr("Automatic selection of the low pause collector" | |
| 1393 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1394 } | |
| 1395 return true; | |
| 1396 } | |
| 1397 return false; | |
| 1398 } | |
| 1399 | |
| 1400 void Arguments::set_ergonomics_flags() { | |
| 1401 // Parallel GC is not compatible with sharing. If one specifies | |
| 1064 | 1402 // that they want sharing explicitly, do not set ergonomics flags. |
| 0 | 1403 if (DumpSharedSpaces || ForceSharedSpaces) { |
| 1404 return; | |
| 1405 } | |
| 1406 | |
| 1407 if (os::is_server_class_machine() && !force_client_mode ) { | |
| 1408 // If no other collector is requested explicitly, | |
| 1409 // let the VM select the collector based on | |
| 1410 // machine class and automatic selection policy. | |
| 1411 if (!UseSerialGC && | |
| 1412 !UseConcMarkSweepGC && | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1413 !UseG1GC && |
| 0 | 1414 !UseParNewGC && |
| 1415 !DumpSharedSpaces && | |
| 1416 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1417 if (should_auto_select_low_pause_collector()) { | |
| 1418 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1419 } else { | |
| 1420 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1421 } | |
| 1422 no_shared_spaces(); | |
| 1423 } | |
| 1424 } | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1425 |
| 1010 | 1426 #ifndef ZERO |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1427 #ifdef _LP64 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1428 // Check that UseCompressedOops can be set with the max heap size allocated |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1429 // by ergonomics. |
| 187 | 1430 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 1783 | 1431 #if !defined(COMPILER1) || defined(TIERED) |
| 932 | 1432 if (FLAG_IS_DEFAULT(UseCompressedOops) && !UseG1GC) { |
| 1433 FLAG_SET_ERGO(bool, UseCompressedOops, true); | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1434 } |
| 1060 | 1435 #endif |
|
325
93befa083681
6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page
coleenp
parents:
276
diff
changeset
|
1436 #ifdef _WIN64 |
|
93befa083681
6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page
coleenp
parents:
276
diff
changeset
|
1437 if (UseLargePages && UseCompressedOops) { |
|
93befa083681
6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page
coleenp
parents:
276
diff
changeset
|
1438 // Cannot allocate guard pages for implicit checks in indexed addressing |
|
93befa083681
6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page
coleenp
parents:
276
diff
changeset
|
1439 // mode, when large pages are specified on windows. |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
570
diff
changeset
|
1440 // This flag could be switched ON if narrow oop base address is set to 0, |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
570
diff
changeset
|
1441 // see code in Universe::initialize_heap(). |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
570
diff
changeset
|
1442 Universe::set_narrow_oop_use_implicit_null_checks(false); |
|
325
93befa083681
6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page
coleenp
parents:
276
diff
changeset
|
1443 } |
|
93befa083681
6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page
coleenp
parents:
276
diff
changeset
|
1444 #endif // _WIN64 |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1445 } else { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1446 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1447 warning("Max heap size too large for Compressed Oops"); |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1448 FLAG_SET_DEFAULT(UseCompressedOops, false); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1449 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1450 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1451 // Also checks that certain machines are slower with compressed oops |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1452 // in vm_version initialization code. |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
76
diff
changeset
|
1453 #endif // _LP64 |
| 1010 | 1454 #endif // !ZERO |
| 0 | 1455 } |
| 1456 | |
| 1457 void Arguments::set_parallel_gc_flags() { | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1458 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 0 | 1459 // If parallel old was requested, automatically enable parallel scavenge. |
| 1460 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1461 FLAG_SET_DEFAULT(UseParallelGC, true); | |
| 1462 } | |
| 1463 | |
| 1464 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1465 // of the physical memory, up to a maximum of 1GB. | |
| 1466 if (UseParallelGC) { | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1467 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1468 Abstract_VM_Version::parallel_worker_threads()); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1469 |
| 0 | 1470 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1471 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1472 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1473 // See CR 6362902 for details. | |
| 1474 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1475 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1476 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1477 } | |
| 1478 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1479 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1480 } | |
| 1481 } | |
| 1482 | |
| 1483 if (UseParallelOldGC) { | |
| 1484 // Par compact uses lower default values since they are treated as | |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1485 // minimums. These are different defaults because of the different |
|
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1486 // interpretation and are not ergonomically set. |
| 0 | 1487 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1488 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1489 } |
| 1490 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
10
diff
changeset
|
1491 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1492 } |
| 1493 } | |
| 1494 } | |
| 1495 } | |
| 1496 | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1497 void Arguments::set_g1_gc_flags() { |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1498 assert(UseG1GC, "Error"); |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1499 #ifdef COMPILER1 |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1500 FastTLABRefill = false; |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1501 #endif |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1502 FLAG_SET_DEFAULT(ParallelGCThreads, |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1503 Abstract_VM_Version::parallel_worker_threads()); |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1504 if (ParallelGCThreads == 0) { |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1505 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1506 Abstract_VM_Version::parallel_worker_threads()); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1507 } |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1508 no_shared_spaces(); |
| 751 | 1509 |
| 1284 | 1510 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
|
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1284
diff
changeset
|
1511 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
| 1284 | 1512 } |
| 1513 if (PrintGCDetails && Verbose) { | |
| 1514 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1515 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1516 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1517 } | |
| 1356 | 1518 |
| 1519 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
| 1520 // In G1, we want the default GC overhead goal to be higher than | |
| 1521 // say in PS. So we set it here to 10%. Otherwise the heap might | |
| 1522 // be expanded more aggressively than we would like it to. In | |
| 1523 // fact, even 10% seems to not be high enough in some cases | |
| 1524 // (especially small GC stress tests that the main thing they do | |
| 1525 // is allocation). We might consider increase it further. | |
| 1526 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
| 1527 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1528 } |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1529 |
| 1064 | 1530 void Arguments::set_heap_size() { |
| 1531 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
| 1532 // Deprecated flag | |
| 1533 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
| 1534 } | |
| 1535 | |
| 1536 const julong phys_mem = | |
| 1537 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
| 1538 : (julong)MaxRAM; | |
| 1539 | |
| 1540 // If the maximum heap size has not been set with -Xmx, | |
| 1541 // then set it as fraction of the size of physical memory, | |
| 1542 // respecting the maximum and minimum sizes of the heap. | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1543 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
| 1064 | 1544 julong reasonable_max = phys_mem / MaxRAMFraction; |
| 1545 | |
| 1546 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
| 1547 // Small physical memory, so use a minimum fraction of it for the heap | |
| 1548 reasonable_max = phys_mem / MinRAMFraction; | |
| 1549 } else { | |
| 1550 // Not-small physical memory, so require a heap at least | |
| 1551 // as large as MaxHeapSize | |
| 1552 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
| 1553 } | |
| 1554 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
| 1555 // Limit the heap size to ErgoHeapSizeLimit | |
| 1556 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1557 } |
| 1064 | 1558 if (UseCompressedOops) { |
| 1559 // Limit the heap size to the maximum possible when using compressed oops | |
| 1963 | 1560 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
| 1561 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
| 1562 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
| 1563 // but it should be not less than default MaxHeapSize. | |
| 1564 max_coop_heap -= HeapBaseMinAddress; | |
| 1565 } | |
| 1566 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
| 1064 | 1567 } |
| 1568 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
| 1569 | |
| 1570 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
| 1571 // An initial heap size was specified on the command line, | |
| 1572 // so be sure that the maximum size is consistent. Done | |
| 1573 // after call to allocatable_physical_memory because that | |
| 1574 // method might reduce the allocation size. | |
| 1575 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
| 1576 } | |
| 1577 | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1578 if (PrintGCDetails && Verbose) { |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1579 // Cannot use gclog_or_tty yet. |
| 1064 | 1580 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1581 } |
| 1064 | 1582 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
| 1583 } | |
| 1584 | |
| 1585 // If the initial_heap_size has not been set with InitialHeapSize | |
| 1586 // or -Xms, then set it as fraction of the size of physical memory, | |
| 1587 // respecting the maximum and minimum sizes of the heap. | |
| 1588 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
|
1074
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1589 julong reasonable_minimum = (julong)(OldSize + NewSize); |
|
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1590 |
|
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1591 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
|
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1592 |
|
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1593 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
|
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1594 |
| 1064 | 1595 julong reasonable_initial = phys_mem / InitialRAMFraction; |
| 1596 | |
|
1074
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1597 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
| 1064 | 1598 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
| 1599 | |
| 1600 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
| 1601 | |
| 1602 if (PrintGCDetails && Verbose) { | |
| 1603 // Cannot use gclog_or_tty yet. | |
| 1604 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
|
1074
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1605 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1606 } |
| 1064 | 1607 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
|
1074
84cb6f20afb3
6900899: vm fails to start when -Xmx value is less than OldSize + NewSize
phh
parents:
1069
diff
changeset
|
1608 set_min_heap_size((uintx)reasonable_minimum); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1609 } |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1610 } |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1611 |
| 0 | 1612 // This must be called after ergonomics because we want bytecode rewriting |
| 1613 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1614 void Arguments::set_bytecode_flags() { | |
| 1615 // Better not attempt to store into a read-only space. | |
| 1616 if (UseSharedSpaces) { | |
| 1617 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1618 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1619 } | |
| 1620 | |
| 1621 if (!RewriteBytecodes) { | |
| 1622 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1623 } | |
| 1624 } | |
| 1625 | |
| 1626 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1627 void Arguments::set_aggressive_opts_flags() { | |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1628 #ifdef COMPILER2 |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1629 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1630 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1631 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1632 } |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1633 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1634 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1635 } |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1636 |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1637 // Feed the cache size setting into the JDK |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1638 char buffer[1024]; |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1639 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1640 add_property(buffer); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1641 } |
| 65 | 1642 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
| 1643 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
| 1644 } | |
|
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1645 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1646 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1647 } |
| 1622 | 1648 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeStringConcat)) { |
| 1649 FLAG_SET_DEFAULT(OptimizeStringConcat, true); | |
| 1650 } | |
| 1763 | 1651 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeFill)) { |
| 1652 FLAG_SET_DEFAULT(OptimizeFill, true); | |
| 1653 } | |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1654 #endif |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1655 |
| 0 | 1656 if (AggressiveOpts) { |
| 61 | 1657 // Sample flag setting code |
| 1658 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1659 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1660 // } | |
| 0 | 1661 } |
| 1662 } | |
| 1663 | |
| 1664 //=========================================================================================================== | |
| 1665 // Parsing of java.compiler property | |
| 1666 | |
| 1667 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1668 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1669 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1670 // is also specified. | |
| 1671 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1672 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1673 } | |
| 1674 } | |
| 1675 | |
| 1676 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1677 _sun_java_launcher = strdup(launcher); | |
| 1678 } | |
| 1679 | |
| 1680 bool Arguments::created_by_java_launcher() { | |
| 1681 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1682 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1683 } | |
| 1684 | |
| 1685 //=========================================================================================================== | |
| 1686 // Parsing of main arguments | |
| 1687 | |
|
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1688 bool Arguments::verify_interval(uintx val, uintx min, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1689 uintx max, const char* name) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1690 // Returns true iff value is in the inclusive interval [min..max] |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1691 // false, otherwise. |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1692 if (val >= min && val <= max) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1693 return true; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1694 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1695 jio_fprintf(defaultStream::error_stream(), |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1696 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1697 " and " UINTX_FORMAT "\n", |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1698 name, val, min, max); |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1699 return false; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1700 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1701 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1702 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1703 // Returns true if given value is greater than specified min threshold |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1704 // false, otherwise. |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1705 if (val >= min ) { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1706 return true; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1707 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1708 jio_fprintf(defaultStream::error_stream(), |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1709 "%s of " INTX_FORMAT " is invalid; must be greater than " INTX_FORMAT "\n", |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1710 name, val, min); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1711 return false; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1712 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1713 |
| 0 | 1714 bool Arguments::verify_percentage(uintx value, const char* name) { |
| 1715 if (value <= 100) { | |
| 1716 return true; | |
| 1717 } | |
| 1718 jio_fprintf(defaultStream::error_stream(), | |
| 1719 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1720 name, value); | |
| 1721 return false; | |
| 1722 } | |
| 1723 | |
| 1064 | 1724 static void force_serial_gc() { |
| 0 | 1725 FLAG_SET_DEFAULT(UseSerialGC, true); |
| 1726 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1727 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1728 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
| 0 | 1729 FLAG_SET_DEFAULT(UseParallelGC, false); |
| 1730 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1731 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1732 } |
| 1733 | |
| 1734 static bool verify_serial_gc_flags() { | |
| 1735 return (UseSerialGC && | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1736 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1737 UseParallelGC || UseParallelOldGC)); |
| 0 | 1738 } |
| 1739 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1740 // Check consistency of GC selection |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1741 bool Arguments::check_gc_consistency() { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1742 bool status = true; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1743 // Ensure that the user has not selected conflicting sets |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1744 // of collectors. [Note: this check is merely a user convenience; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1745 // collectors over-ride each other so that only a non-conflicting |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1746 // set is selected; however what the user gets is not what they |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1747 // may have expected from the combination they asked for. It's |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1748 // better to reduce user confusion by not allowing them to |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1749 // select conflicting combinations. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1750 uint i = 0; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1751 if (UseSerialGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1752 if (UseConcMarkSweepGC || UseParNewGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1753 if (UseParallelGC || UseParallelOldGC) i++; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1754 if (UseG1GC) i++; |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1755 if (i > 1) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1756 jio_fprintf(defaultStream::error_stream(), |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1757 "Conflicting collector combinations in option list; " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1758 "please refer to the release notes for the combinations " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1759 "allowed\n"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1760 status = false; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1761 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1762 |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1763 return status; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1764 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1765 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1766 // Check stack pages settings |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1767 bool Arguments::check_stack_pages() |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1768 { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1769 bool status = true; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1770 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1771 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
|
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1864
diff
changeset
|
1772 // greater stack shadow pages can't generate instruction to bang stack |
|
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1864
diff
changeset
|
1773 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1774 return status; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1775 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1776 |
| 0 | 1777 // Check the consistency of vm_init_args |
| 1778 bool Arguments::check_vm_args_consistency() { | |
| 1779 // Method for adding checks for flag consistency. | |
| 1780 // The intent is to warn the user of all possible conflicts, | |
| 1781 // before returning an error. | |
| 1782 // Note: Needs platform-dependent factoring. | |
| 1783 bool status = true; | |
| 1784 | |
| 1785 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1786 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1787 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1788 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1789 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1790 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1791 extern void VM_Version_init(); | |
| 1792 VM_Version_init(); | |
| 1793 if (!VM_Version::has_v9()) { | |
| 1794 jio_fprintf(defaultStream::error_stream(), | |
| 1795 "V8 Machine detected, Server requires V9\n"); | |
| 1796 status = false; | |
| 1797 } | |
| 1798 #endif /* COMPILER2 && SPARC */ | |
| 1799 | |
| 1800 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1801 // builds so the cost of stack banging can be measured. | |
| 1802 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1803 if (!UseBoundThreads && !UseStackBanging) { | |
| 1804 jio_fprintf(defaultStream::error_stream(), | |
| 1805 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1806 | |
| 1807 status = false; | |
| 1808 } | |
| 1809 #endif | |
| 1810 | |
| 1811 if (TLABRefillWasteFraction == 0) { | |
| 1812 jio_fprintf(defaultStream::error_stream(), | |
| 1813 "TLABRefillWasteFraction should be a denominator, " | |
| 1814 "not " SIZE_FORMAT "\n", | |
| 1815 TLABRefillWasteFraction); | |
| 1816 status = false; | |
| 1817 } | |
| 1818 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1819 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1820 "AdaptiveSizePolicyWeight"); |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1821 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1822 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1823 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1824 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1825 |
| 1826 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1827 jio_fprintf(defaultStream::error_stream(), | |
| 1828 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1829 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1830 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1831 status = false; | |
| 1832 } | |
| 1833 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1834 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1835 | |
| 1836 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1837 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1838 } | |
| 1839 | |
|
483
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1840 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1841 // Settings to encourage splitting. |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1842 if (!FLAG_IS_CMDLINE(NewRatio)) { |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1843 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1844 } |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1845 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1846 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1847 } |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1848 } |
|
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
449
diff
changeset
|
1849 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1850 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1851 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1852 if (GCTimeLimit == 100) { |
| 1853 // Turn off gc-overhead-limit-exceeded checks | |
| 1854 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1855 } | |
| 1856 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1857 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1858 |
|
1626
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1859 // Check whether user-specified sharing option conflicts with GC or page size. |
|
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1860 // Both sharing and large pages are enabled by default on some platforms; |
|
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1861 // large pages override sharing only if explicitly set on the command line. |
|
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1862 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
|
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1863 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
|
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1864 UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
| 0 | 1865 if (cannot_share) { |
| 1866 // Either force sharing on by forcing the other options off, or | |
| 1867 // force sharing off. | |
| 1868 if (DumpSharedSpaces || ForceSharedSpaces) { | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1869 jio_fprintf(defaultStream::error_stream(), |
|
1626
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1870 "Using Serial GC and default page size because of %s\n", |
|
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1871 ForceSharedSpaces ? "-Xshare:on" : "-Xshare:dump"); |
| 1064 | 1872 force_serial_gc(); |
|
1626
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1873 FLAG_SET_DEFAULT(UseLargePages, false); |
| 0 | 1874 } else { |
| 1064 | 1875 if (UseSharedSpaces && Verbose) { |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1876 jio_fprintf(defaultStream::error_stream(), |
|
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1877 "Turning off use of shared archive because of " |
| 1064 | 1878 "choice of garbage collector or large pages\n"); |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1879 } |
| 0 | 1880 no_shared_spaces(); |
| 1881 } | |
|
1626
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1882 } else if (UseLargePages && (UseSharedSpaces || DumpSharedSpaces)) { |
|
1a11430e0326
6888573: class data sharing does not always disable large pages
jcoomes
parents:
1579
diff
changeset
|
1883 FLAG_SET_DEFAULT(UseLargePages, false); |
| 0 | 1884 } |
| 1885 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1886 status = status && check_gc_consistency(); |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1887 status = status && check_stack_pages(); |
| 0 | 1888 |
| 1889 if (_has_alloc_profile) { | |
| 1890 if (UseParallelGC || UseParallelOldGC) { | |
| 1891 jio_fprintf(defaultStream::error_stream(), | |
| 1892 "error: invalid argument combination.\n" | |
| 1893 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1894 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1895 status = false; | |
| 1896 } | |
| 1897 if (UseConcMarkSweepGC) { | |
| 1898 jio_fprintf(defaultStream::error_stream(), | |
| 1899 "error: invalid argument combination.\n" | |
| 1900 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1901 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1902 status = false; | |
| 1903 } | |
| 1904 } | |
| 1905 | |
| 1906 if (CMSIncrementalMode) { | |
| 1907 if (!UseConcMarkSweepGC) { | |
| 1908 jio_fprintf(defaultStream::error_stream(), | |
| 1909 "error: invalid argument combination.\n" | |
| 1910 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1911 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1912 status = false; | |
| 1913 } else { | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1914 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1915 "CMSIncrementalDutyCycle"); |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1916 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1917 "CMSIncrementalDutyCycleMin"); |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1918 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1919 "CMSIncrementalSafetyFactor"); |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1920 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1921 "CMSIncrementalOffset"); |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1922 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1923 "CMSExpAvgFactor"); |
| 1924 // If it was not set on the command line, set | |
| 1925 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1926 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1927 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1928 } | |
| 1929 } | |
| 1930 } | |
| 1931 | |
| 1932 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1933 // insists that we hold the requisite locks so that the iteration is | |
| 1934 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1935 // yet have a good way of acquiring and releasing these locks, | |
| 1936 // which are not visible at the CollectedHeap level. We want to | |
| 1937 // be able to acquire these locks and then do the iteration rather | |
| 1938 // than just disable the lock verification. This will be fixed under | |
| 1939 // bug 4788986. | |
| 1940 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1941 if (VerifyGCStartAt == 0) { | |
| 1942 warning("Heap verification at start-up disabled " | |
| 1943 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1944 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1945 } | |
| 1946 if (VerifyBeforeExit) { | |
| 1947 warning("Heap verification at shutdown disabled " | |
| 1948 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1949 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1950 } | |
| 1951 } | |
| 1952 | |
| 1953 // Note: only executed in non-PRODUCT mode | |
| 1954 if (!UseAsyncConcMarkSweepGC && | |
| 1955 (ExplicitGCInvokesConcurrent || | |
| 1956 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1957 jio_fprintf(defaultStream::error_stream(), | |
| 1958 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1959 " with -UseAsyncConcMarkSweepGC"); | |
| 1960 status = false; | |
| 1961 } | |
| 1962 | |
|
1283
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
1963 if (UseG1GC) { |
|
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
1964 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
|
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
1965 "InitiatingHeapOccupancyPercent"); |
|
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
1966 } |
|
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1257
diff
changeset
|
1967 |
|
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1968 status = status && verify_interval(RefDiscoveryPolicy, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1969 ReferenceProcessor::DiscoveryPolicyMin, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1970 ReferenceProcessor::DiscoveryPolicyMax, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1971 "RefDiscoveryPolicy"); |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1972 |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1973 // Limit the lower bound of this flag to 1 as it is used in a division |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1974 // expression. |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1975 status = status && verify_interval(TLABWasteTargetPercent, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1976 1, 100, "TLABWasteTargetPercent"); |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1977 |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1978 status = status && verify_object_alignment(); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
1979 |
| 0 | 1980 return status; |
| 1981 } | |
| 1982 | |
| 1983 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1984 const char* option_type) { | |
| 1985 if (ignore) return false; | |
| 1986 | |
| 1987 const char* spacer = " "; | |
| 1988 if (option_type == NULL) { | |
| 1989 option_type = ++spacer; // Set both to the empty string. | |
| 1990 } | |
| 1991 | |
| 1992 if (os::obsolete_option(option)) { | |
| 1993 jio_fprintf(defaultStream::error_stream(), | |
| 1994 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1995 option->optionString); | |
| 1996 return false; | |
| 1997 } else { | |
| 1998 jio_fprintf(defaultStream::error_stream(), | |
| 1999 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 2000 option->optionString); | |
| 2001 return true; | |
| 2002 } | |
| 2003 } | |
| 2004 | |
| 2005 static const char* user_assertion_options[] = { | |
| 2006 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 2007 }; | |
| 2008 | |
| 2009 static const char* system_assertion_options[] = { | |
| 2010 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 2011 }; | |
| 2012 | |
| 2013 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 2014 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 2015 // the option must match exactly. | |
| 2016 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 2017 bool tail_allowed) { | |
| 2018 for (/* empty */; *names != NULL; ++names) { | |
| 2019 if (match_option(option, *names, tail)) { | |
| 2020 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 2021 return true; | |
| 2022 } | |
| 2023 } | |
| 2024 } | |
| 2025 return false; | |
| 2026 } | |
| 2027 | |
| 1284 | 2028 bool Arguments::parse_uintx(const char* value, |
| 2029 uintx* uintx_arg, | |
| 2030 uintx min_size) { | |
| 2031 | |
| 2032 // Check the sign first since atomull() parses only unsigned values. | |
| 2033 bool value_is_positive = !(*value == '-'); | |
| 2034 | |
| 2035 if (value_is_positive) { | |
| 2036 julong n; | |
| 2037 bool good_return = atomull(value, &n); | |
| 2038 if (good_return) { | |
| 2039 bool above_minimum = n >= min_size; | |
| 2040 bool value_is_too_large = n > max_uintx; | |
| 2041 | |
| 2042 if (above_minimum && !value_is_too_large) { | |
| 2043 *uintx_arg = n; | |
| 2044 return true; | |
| 2045 } | |
| 2046 } | |
| 2047 } | |
| 2048 return false; | |
| 2049 } | |
| 2050 | |
| 0 | 2051 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2052 julong* long_arg, |
|
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2053 julong min_size) { |
|
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2054 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 2055 return check_memory_size(*long_arg, min_size); |
| 2056 } | |
| 2057 | |
| 2058 // Parse JavaVMInitArgs structure | |
| 2059 | |
| 2060 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 2061 // For components of the system classpath. | |
| 2062 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 2063 bool scp_assembly_required = false; | |
| 2064 | |
| 2065 // Save default settings for some mode flags | |
| 2066 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 2067 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 2068 Arguments::_ClipInlining = ClipInlining; | |
| 2069 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 2070 | |
| 2071 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
| 2072 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 2073 if (result != JNI_OK) { | |
| 2074 return result; | |
| 2075 } | |
| 2076 | |
| 2077 // Parse JavaVMInitArgs structure passed in | |
| 2078 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 2079 if (result != JNI_OK) { | |
| 2080 return result; | |
| 2081 } | |
| 2082 | |
|
531
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2083 if (AggressiveOpts) { |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2084 // Insert alt-rt.jar between user-specified bootclasspath |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2085 // prefix and the default bootclasspath. os::set_boot_path() |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2086 // uses meta_index_dir as the default bootclasspath directory. |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2087 const char* altclasses_jar = "alt-rt.jar"; |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2088 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2089 strlen(altclasses_jar); |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2090 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2091 strcpy(altclasses_path, get_meta_index_dir()); |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2092 strcat(altclasses_path, altclasses_jar); |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2093 scp.add_suffix_to_prefix(altclasses_path); |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2094 scp_assembly_required = true; |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2095 FREE_C_HEAP_ARRAY(char, altclasses_path); |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2096 } |
|
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2097 |
| 0 | 2098 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 2099 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 2100 if (result != JNI_OK) { | |
| 2101 return result; | |
| 2102 } | |
| 2103 | |
| 2104 // Do final processing now that all arguments have been parsed | |
| 2105 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 2106 if (result != JNI_OK) { | |
| 2107 return result; | |
| 2108 } | |
| 2109 | |
| 2110 return JNI_OK; | |
| 2111 } | |
| 2112 | |
| 2113 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 2114 SysClassPath* scp_p, | |
| 2115 bool* scp_assembly_required_p, | |
| 2116 FlagValueOrigin origin) { | |
| 2117 // Remaining part of option string | |
| 2118 const char* tail; | |
| 2119 | |
| 2120 // iterate over arguments | |
| 2121 for (int index = 0; index < args->nOptions; index++) { | |
| 2122 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 2123 | |
| 2124 const JavaVMOption* option = args->options + index; | |
| 2125 | |
| 2126 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 2127 !match_option(option, "-Dsun.java.command", &tail) && | |
| 2128 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 2129 | |
| 2130 // add all jvm options to the jvm_args string. This string | |
| 2131 // is used later to set the java.vm.args PerfData string constant. | |
| 2132 // the -Djava.class.path and the -Dsun.java.command options are | |
| 2133 // omitted from jvm_args string as each have their own PerfData | |
| 2134 // string constant object. | |
| 2135 build_jvm_args(option->optionString); | |
| 2136 } | |
| 2137 | |
| 2138 // -verbose:[class/gc/jni] | |
| 2139 if (match_option(option, "-verbose", &tail)) { | |
| 2140 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 2141 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 2142 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2143 } else if (!strcmp(tail, ":gc")) { | |
| 2144 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2145 } else if (!strcmp(tail, ":jni")) { | |
| 2146 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 2147 } | |
| 2148 // -da / -ea / -disableassertions / -enableassertions | |
| 2149 // These accept an optional class/package name separated by a colon, e.g., | |
| 2150 // -da:java.lang.Thread. | |
| 2151 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 2152 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2153 if (*tail == '\0') { | |
| 2154 JavaAssertions::setUserClassDefault(enable); | |
| 2155 } else { | |
| 2156 assert(*tail == ':', "bogus match by match_option()"); | |
| 2157 JavaAssertions::addOption(tail + 1, enable); | |
| 2158 } | |
| 2159 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 2160 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 2161 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2162 JavaAssertions::setSystemClassDefault(enable); | |
| 2163 // -bootclasspath: | |
| 2164 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 2165 scp_p->reset_path(tail); | |
| 2166 *scp_assembly_required_p = true; | |
| 2167 // -bootclasspath/a: | |
| 2168 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 2169 scp_p->add_suffix(tail); | |
| 2170 *scp_assembly_required_p = true; | |
| 2171 // -bootclasspath/p: | |
| 2172 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 2173 scp_p->add_prefix(tail); | |
| 2174 *scp_assembly_required_p = true; | |
| 2175 // -Xrun | |
| 2176 } else if (match_option(option, "-Xrun", &tail)) { | |
|
531
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2177 if (tail != NULL) { |
| 0 | 2178 const char* pos = strchr(tail, ':'); |
| 2179 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2180 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2181 name[len] = '\0'; | |
| 2182 | |
| 2183 char *options = NULL; | |
| 2184 if(pos != NULL) { | |
| 2185 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 2186 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 2187 } | |
| 2188 #ifdef JVMTI_KERNEL | |
| 2189 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2190 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2191 } else | |
| 2192 #endif // JVMTI_KERNEL | |
| 2193 add_init_library(name, options); | |
| 2194 } | |
| 2195 // -agentlib and -agentpath | |
| 2196 } else if (match_option(option, "-agentlib:", &tail) || | |
| 2197 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 2198 if(tail != NULL) { | |
| 2199 const char* pos = strchr(tail, '='); | |
| 2200 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2201 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2202 name[len] = '\0'; | |
| 2203 | |
| 2204 char *options = NULL; | |
| 2205 if(pos != NULL) { | |
| 2206 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 2207 } | |
| 2208 #ifdef JVMTI_KERNEL | |
| 2209 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2210 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2211 } else | |
| 2212 #endif // JVMTI_KERNEL | |
| 2213 add_init_agent(name, options, is_absolute_path); | |
| 2214 | |
| 2215 } | |
| 2216 // -javaagent | |
| 2217 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 2218 if(tail != NULL) { | |
| 2219 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 2220 add_init_agent("instrument", options, false); | |
| 2221 } | |
| 2222 // -Xnoclassgc | |
| 2223 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 2224 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 2225 // -Xincgc: i-CMS | |
| 2226 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 2227 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2228 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 2229 // -Xnoincgc: no i-CMS | |
| 2230 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 2231 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2232 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 2233 // -Xconcgc | |
| 2234 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 2235 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2236 // -Xnoconcgc | |
| 2237 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 2238 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2239 // -Xbatch | |
| 2240 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 2241 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2242 // -Xmn for compatibility with other JVM vendors | |
| 2243 } else if (match_option(option, "-Xmn", &tail)) { | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2244 julong long_initial_eden_size = 0; |
| 0 | 2245 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 2246 if (errcode != arg_in_range) { | |
| 2247 jio_fprintf(defaultStream::error_stream(), | |
| 2248 "Invalid initial eden size: %s\n", option->optionString); | |
| 2249 describe_range_error(errcode); | |
| 2250 return JNI_EINVAL; | |
| 2251 } | |
| 1064 | 2252 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
| 2253 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
| 0 | 2254 // -Xms |
| 2255 } else if (match_option(option, "-Xms", &tail)) { | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2256 julong long_initial_heap_size = 0; |
| 0 | 2257 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 2258 if (errcode != arg_in_range) { | |
| 2259 jio_fprintf(defaultStream::error_stream(), | |
| 2260 "Invalid initial heap size: %s\n", option->optionString); | |
| 2261 describe_range_error(errcode); | |
| 2262 return JNI_EINVAL; | |
| 2263 } | |
| 1064 | 2264 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
| 0 | 2265 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2266 set_min_heap_size(InitialHeapSize); |
| 0 | 2267 // -Xmx |
| 2268 } else if (match_option(option, "-Xmx", &tail)) { | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2269 julong long_max_heap_size = 0; |
| 0 | 2270 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 2271 if (errcode != arg_in_range) { | |
| 2272 jio_fprintf(defaultStream::error_stream(), | |
| 2273 "Invalid maximum heap size: %s\n", option->optionString); | |
| 2274 describe_range_error(errcode); | |
| 2275 return JNI_EINVAL; | |
| 2276 } | |
| 1064 | 2277 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
| 0 | 2278 // Xmaxf |
| 2279 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 2280 int maxf = (int)(atof(tail) * 100); | |
| 2281 if (maxf < 0 || maxf > 100) { | |
| 2282 jio_fprintf(defaultStream::error_stream(), | |
| 2283 "Bad max heap free percentage size: %s\n", | |
| 2284 option->optionString); | |
| 2285 return JNI_EINVAL; | |
| 2286 } else { | |
| 2287 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 2288 } | |
| 2289 // Xminf | |
| 2290 } else if (match_option(option, "-Xminf", &tail)) { | |
| 2291 int minf = (int)(atof(tail) * 100); | |
| 2292 if (minf < 0 || minf > 100) { | |
| 2293 jio_fprintf(defaultStream::error_stream(), | |
| 2294 "Bad min heap free percentage size: %s\n", | |
| 2295 option->optionString); | |
| 2296 return JNI_EINVAL; | |
| 2297 } else { | |
| 2298 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 2299 } | |
| 2300 // -Xss | |
| 2301 } else if (match_option(option, "-Xss", &tail)) { | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2302 julong long_ThreadStackSize = 0; |
| 0 | 2303 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 2304 if (errcode != arg_in_range) { | |
| 2305 jio_fprintf(defaultStream::error_stream(), | |
| 2306 "Invalid thread stack size: %s\n", option->optionString); | |
| 2307 describe_range_error(errcode); | |
| 2308 return JNI_EINVAL; | |
| 2309 } | |
| 2310 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 2311 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 2312 round_to((int)long_ThreadStackSize, K) / K); | |
| 2313 // -Xoss | |
| 2314 } else if (match_option(option, "-Xoss", &tail)) { | |
| 2315 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 2316 // -Xmaxjitcodesize | |
| 2317 } else if (match_option(option, "-Xmaxjitcodesize", &tail)) { | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2318 julong long_ReservedCodeCacheSize = 0; |
| 0 | 2319 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2320 (size_t)InitialCodeCacheSize); |
| 0 | 2321 if (errcode != arg_in_range) { |
| 2322 jio_fprintf(defaultStream::error_stream(), | |
| 2323 "Invalid maximum code cache size: %s\n", | |
| 2324 option->optionString); | |
| 2325 describe_range_error(errcode); | |
| 2326 return JNI_EINVAL; | |
| 2327 } | |
| 2328 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 2329 // -green | |
| 2330 } else if (match_option(option, "-green", &tail)) { | |
| 2331 jio_fprintf(defaultStream::error_stream(), | |
| 2332 "Green threads support not available\n"); | |
| 2333 return JNI_EINVAL; | |
| 2334 // -native | |
| 2335 } else if (match_option(option, "-native", &tail)) { | |
| 2336 // HotSpot always uses native threads, ignore silently for compatibility | |
| 2337 // -Xsqnopause | |
| 2338 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 2339 // EVM option, ignore silently for compatibility | |
| 2340 // -Xrs | |
| 2341 } else if (match_option(option, "-Xrs", &tail)) { | |
| 2342 // Classic/EVM option, new functionality | |
| 2343 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 2344 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 2345 // change default internal VM signals used - lower case for back compat | |
| 2346 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 2347 // -Xoptimize | |
| 2348 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 2349 // EVM option, ignore silently for compatibility | |
| 2350 // -Xprof | |
| 2351 } else if (match_option(option, "-Xprof", &tail)) { | |
| 2352 #ifndef FPROF_KERNEL | |
| 2353 _has_profile = true; | |
| 2354 #else // FPROF_KERNEL | |
| 2355 // do we have to exit? | |
| 2356 warning("Kernel VM does not support flat profiling."); | |
| 2357 #endif // FPROF_KERNEL | |
| 2358 // -Xaprof | |
| 2359 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2360 _has_alloc_profile = true; | |
| 2361 // -Xconcurrentio | |
| 2362 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2363 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2364 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2365 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2366 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2367 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2368 | |
| 2369 // -Xinternalversion | |
| 2370 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2371 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2372 VM_Version::internal_vm_info_string()); | |
| 2373 vm_exit(0); | |
| 2374 #ifndef PRODUCT | |
| 2375 // -Xprintflags | |
| 2376 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 2377 CommandLineFlags::printFlags(); | |
| 2378 vm_exit(0); | |
| 2379 #endif | |
| 2380 // -D | |
| 2381 } else if (match_option(option, "-D", &tail)) { | |
| 2382 if (!add_property(tail)) { | |
| 2383 return JNI_ENOMEM; | |
| 2384 } | |
| 2385 // Out of the box management support | |
| 2386 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2387 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2388 } | |
| 2389 // -Xint | |
| 2390 } else if (match_option(option, "-Xint", &tail)) { | |
| 2391 set_mode_flags(_int); | |
| 2392 // -Xmixed | |
| 2393 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2394 set_mode_flags(_mixed); | |
| 2395 // -Xcomp | |
| 2396 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2397 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2398 set_mode_flags(_comp); | |
| 2399 | |
| 2400 // -Xshare:dump | |
| 2401 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2402 #ifdef TIERED | |
| 2403 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2404 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2405 #elif defined(COMPILER2) | |
| 2406 vm_exit_during_initialization( | |
| 2407 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2408 #elif defined(KERNEL) | |
| 2409 vm_exit_during_initialization( | |
| 2410 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2411 #else | |
| 2412 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2413 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2414 #endif | |
| 2415 // -Xshare:on | |
| 2416 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2417 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2418 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2419 #ifdef TIERED | |
| 2420 FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true); | |
| 2421 #endif // TIERED | |
| 2422 // -Xshare:auto | |
| 2423 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2424 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2425 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2426 // -Xshare:off | |
| 2427 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2428 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2429 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2430 | |
| 2431 // -Xverify | |
| 2432 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2433 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2434 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2435 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2436 } else if (strcmp(tail, ":remote") == 0) { | |
| 2437 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2438 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2439 } else if (strcmp(tail, ":none") == 0) { | |
| 2440 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2441 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2442 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2443 return JNI_EINVAL; | |
| 2444 } | |
| 2445 // -Xdebug | |
| 2446 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2447 // note this flag has been used, then ignore | |
| 2448 set_xdebug_mode(true); | |
| 2449 // -Xnoagent | |
| 2450 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2451 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2452 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2453 // Bind user level threads to kernel threads (Solaris only) | |
| 2454 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2455 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2456 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2457 // ostream_init_log(), when called will use this filename | |
| 2458 // to initialize a fileStream. | |
| 2459 _gc_log_filename = strdup(tail); | |
| 2460 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2461 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2462 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2463 | |
| 2464 // JNI hooks | |
| 2465 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2466 if (!strcmp(tail, ":jni")) { | |
| 2467 CheckJNICalls = true; | |
| 2468 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2469 "check")) { | |
| 2470 return JNI_EINVAL; | |
| 2471 } | |
| 2472 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2473 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2474 } else if (match_option(option, "exit", &tail)) { | |
| 2475 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2476 } else if (match_option(option, "abort", &tail)) { | |
| 2477 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2478 // -XX:+AggressiveHeap | |
| 2479 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2480 | |
| 2481 // This option inspects the machine and attempts to set various | |
| 2482 // parameters to be optimal for long-running, memory allocation | |
| 2483 // intensive jobs. It is intended for machines with large | |
| 2484 // amounts of cpu and memory. | |
| 2485 | |
| 2486 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2487 // VM, but we may not be able to represent the total physical memory | |
| 2488 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2489 // Thus, we need to make sure we're using a julong for intermediate | |
| 2490 // calculations. | |
| 2491 julong initHeapSize; | |
| 2492 julong total_memory = os::physical_memory(); | |
| 2493 | |
| 2494 if (total_memory < (julong)256*M) { | |
| 2495 jio_fprintf(defaultStream::error_stream(), | |
| 2496 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2497 vm_exit(1); | |
| 2498 } | |
| 2499 | |
| 2500 // The heap size is half of available memory, or (at most) | |
| 2501 // all of possible memory less 160mb (leaving room for the OS | |
| 2502 // when using ISM). This is the maximum; because adaptive sizing | |
| 2503 // is turned on below, the actual space used may be smaller. | |
| 2504 | |
| 2505 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2506 total_memory - (julong)160*M); | |
| 2507 | |
| 2508 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2509 // process space. The 64bit VM version of this function is a nop. | |
| 2510 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2511 | |
| 2512 // The perm gen is separate but contiguous with the | |
| 2513 // object heap (and is reserved with it) so subtract it | |
| 2514 // from the heap size. | |
| 2515 if (initHeapSize > MaxPermSize) { | |
| 2516 initHeapSize = initHeapSize - MaxPermSize; | |
| 2517 } else { | |
| 2518 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2519 } | |
| 2520 | |
| 2521 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2522 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 1064 | 2523 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
| 0 | 2524 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2525 set_min_heap_size(initHeapSize); |
| 0 | 2526 } |
| 2527 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2528 // Make the young generation 3/8ths of the total heap. | |
| 2529 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2530 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2531 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2532 } | |
| 2533 | |
| 2534 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2535 | |
| 2536 // Increase some data structure sizes for efficiency | |
| 2537 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2538 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2539 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2540 | |
| 2541 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2542 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2543 // space per-gc-thread buffers. The default is 4kw. | |
| 2544 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2545 | |
| 2546 // OldPLABSize is the size of the buffers in the old gen that | |
| 2547 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2548 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2549 // The default size is 1kw. These buffers are rarely used, since the | |
| 2550 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2551 // are occasions when there's lots of live data in the young gen | |
| 2552 // and we end up promoting some of it. We don't have a definite | |
| 2553 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2554 // is that a bigger PLAB results in retaining something like the | |
| 2555 // original allocation order after promotion, which improves mutator | |
| 2556 // locality. A minor effect may be that larger PLABs reduce the | |
| 2557 // number of PLAB allocation events during gc. The value of 8kw | |
| 2558 // was arrived at by experimenting with specjbb. | |
| 2559 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2560 | |
| 2561 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
| 2562 // a more conservative which-method-do-I-compile policy when one | |
| 2563 // of the counters maintained by the interpreter trips. The | |
| 2564 // result is reduced startup time and improved specjbb and | |
| 2565 // alacrity performance. Zero is the default, but we set it | |
| 2566 // explicitly here in case the default changes. | |
| 2567 // See runtime/compilationPolicy.*. | |
| 2568 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
| 2569 | |
| 2570 // Enable parallel GC and adaptive generation sizing | |
| 2571 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
2572 FLAG_SET_DEFAULT(ParallelGCThreads, |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
2573 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2574 |
| 2575 // Encourage steady state memory management | |
| 2576 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2577 | |
| 2578 // This appears to improve mutator locality | |
| 2579 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2580 | |
| 2581 // Get around early Solaris scheduling bug | |
| 2582 // (affinity vs other jobs on system) | |
| 2583 // but disallow DR and offlining (5008695). | |
| 2584 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2585 | |
| 2586 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2587 // The last option must always win. | |
| 2588 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2589 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2590 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2591 // The last option must always win. | |
| 2592 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2593 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2594 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2595 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2596 jio_fprintf(defaultStream::error_stream(), | |
| 2597 "Please use CMSClassUnloadingEnabled in place of " | |
| 2598 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2599 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2600 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2601 jio_fprintf(defaultStream::error_stream(), | |
| 2602 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2603 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2604 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2605 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2606 jio_fprintf(defaultStream::error_stream(), | |
| 2607 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2608 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2609 // The TLE options are for compatibility with 1.3 and will be | |
| 2610 // removed without notice in a future release. These options | |
| 2611 // are not to be documented. | |
| 2612 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2613 // No longer used. | |
| 2614 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2615 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2616 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2617 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2618 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2619 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2620 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2621 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2622 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2623 // No longer used. | |
| 2624 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2625 julong long_tlab_size = 0; |
| 0 | 2626 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2627 if (errcode != arg_in_range) { | |
| 2628 jio_fprintf(defaultStream::error_stream(), | |
| 2629 "Invalid TLAB size: %s\n", option->optionString); | |
| 2630 describe_range_error(errcode); | |
| 2631 return JNI_EINVAL; | |
| 2632 } | |
| 2633 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2634 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2635 // No longer used. | |
| 2636 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2637 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2638 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2639 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2640 SOLARIS_ONLY( | |
| 2641 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2642 warning("-XX:+UsePermISM is obsolete."); | |
| 2643 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2644 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2645 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2646 ) | |
| 2647 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2648 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2649 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2650 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2651 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2652 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2653 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 2654 #ifdef SOLARIS | |
| 2655 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
| 2656 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2657 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2658 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 2659 #else // ndef SOLARIS | |
| 2660 jio_fprintf(defaultStream::error_stream(), | |
| 2661 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
| 2662 return JNI_EINVAL; | |
| 2663 #endif // ndef SOLARIS | |
| 2664 #ifdef ASSERT | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2665 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
| 0 | 2666 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
| 2667 // disable scavenge before parallel mark-compact | |
| 2668 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2669 #endif | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2670 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
| 0 | 2671 julong cms_blocks_to_claim = (julong)atol(tail); |
| 2672 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2673 jio_fprintf(defaultStream::error_stream(), | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2674 "Please use -XX:OldPLABSize in place of " |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2675 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2676 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2677 julong cms_blocks_to_claim = (julong)atol(tail); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2678 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2679 jio_fprintf(defaultStream::error_stream(), |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2680 "Please use -XX:OldPLABSize in place of " |
| 0 | 2681 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2682 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2683 julong old_plab_size = 0; |
| 0 | 2684 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2685 if (errcode != arg_in_range) { | |
| 2686 jio_fprintf(defaultStream::error_stream(), | |
| 2687 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2688 describe_range_error(errcode); | |
| 2689 return JNI_EINVAL; | |
| 2690 } | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2691 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2692 jio_fprintf(defaultStream::error_stream(), |
| 2693 "Please use -XX:OldPLABSize in place of " | |
| 2694 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2695 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2696 julong young_plab_size = 0; |
| 0 | 2697 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2698 if (errcode != arg_in_range) { | |
| 2699 jio_fprintf(defaultStream::error_stream(), | |
| 2700 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2701 describe_range_error(errcode); | |
| 2702 return JNI_EINVAL; | |
| 2703 } | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2704 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2705 jio_fprintf(defaultStream::error_stream(), |
| 2706 "Please use -XX:YoungPLABSize in place of " | |
| 2707 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 1284 | 2708 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
| 2709 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
| 2710 julong stack_size = 0; | |
| 2711 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
| 2712 if (errcode != arg_in_range) { | |
| 2713 jio_fprintf(defaultStream::error_stream(), | |
| 2714 "Invalid mark stack size: %s\n", option->optionString); | |
| 2715 describe_range_error(errcode); | |
| 2716 return JNI_EINVAL; | |
| 2717 } | |
| 2718 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
| 2719 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
| 2720 julong max_stack_size = 0; | |
| 2721 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
| 2722 if (errcode != arg_in_range) { | |
| 2723 jio_fprintf(defaultStream::error_stream(), | |
| 2724 "Invalid maximum mark stack size: %s\n", | |
| 2725 option->optionString); | |
| 2726 describe_range_error(errcode); | |
| 2727 return JNI_EINVAL; | |
| 2728 } | |
| 2729 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
| 2730 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
| 2731 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
| 2732 uintx conc_threads = 0; | |
| 2733 if (!parse_uintx(tail, &conc_threads, 1)) { | |
| 2734 jio_fprintf(defaultStream::error_stream(), | |
| 2735 "Invalid concurrent threads: %s\n", option->optionString); | |
| 2736 return JNI_EINVAL; | |
| 2737 } | |
| 2738 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2739 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
| 0 | 2740 // Skip -XX:Flags= since that case has already been handled |
| 2741 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2742 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2743 return JNI_EINVAL; | |
| 2744 } | |
| 2745 } | |
| 2746 // Unknown option | |
| 2747 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2748 return JNI_ERR; | |
| 2749 } | |
| 2750 } | |
|
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2751 // Change the default value for flags which have different default values |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2752 // when working with older JDKs. |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2753 if (JDK_Version::current().compare_major(6) <= 0 && |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2754 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2755 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
|
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2756 } |
|
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2757 #ifdef LINUX |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2758 if (JDK_Version::current().compare_major(6) <= 0 && |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2759 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2760 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2761 } |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2762 #endif // LINUX |
| 0 | 2763 return JNI_OK; |
| 2764 } | |
| 2765 | |
| 2766 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2767 // This must be done after all -D arguments have been processed. | |
| 2768 scp_p->expand_endorsed(); | |
| 2769 | |
| 2770 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2771 // Assemble the bootclasspath elements into the final path. | |
| 2772 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2773 } | |
| 2774 | |
| 2775 // This must be done after all arguments have been processed. | |
| 2776 // java_compiler() true means set to "NONE" or empty. | |
| 2777 if (java_compiler() && !xdebug_mode()) { | |
| 2778 // For backwards compatibility, we switch to interpreted mode if | |
| 2779 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2780 // not specified. | |
| 2781 set_mode_flags(_int); | |
| 2782 } | |
| 2783 if (CompileThreshold == 0) { | |
| 2784 set_mode_flags(_int); | |
| 2785 } | |
| 2786 | |
| 2787 #ifndef COMPILER2 | |
| 2788 // Don't degrade server performance for footprint | |
| 2789 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2790 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2791 // No need for large granularity pages w/small heaps. | |
| 2792 // Note that large pages are enabled/disabled for both the | |
| 2793 // Java heap and the code cache. | |
| 2794 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2795 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2796 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2797 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2798 |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2799 // Tiered compilation is undefined with C1. |
|
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2800 TieredCompilation = false; |
| 0 | 2801 #else |
| 2802 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2803 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2804 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2805 // Temporary disable bulk zeroing reduction with G1. See CR 6627983. |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2806 if (UseG1GC) { |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2807 FLAG_SET_DEFAULT(ReduceBulkZeroing, false); |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2808 } |
| 0 | 2809 #endif |
| 2810 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2811 // 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
|
2812 // to be true unless the property has already been set. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2813 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2814 if (os::is_headless_jre()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2815 const char* headless = Arguments::get_property("java.awt.headless"); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2816 if (headless == NULL) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2817 char envbuffer[128]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2818 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2819 if (!add_property("java.awt.headless=true")) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2820 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2821 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2822 } else { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2823 char buffer[256]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2824 strcpy(buffer, "java.awt.headless="); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2825 strcat(buffer, envbuffer); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2826 if (!add_property(buffer)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2827 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2828 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2829 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2830 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2831 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2832 |
| 0 | 2833 if (!check_vm_args_consistency()) { |
| 2834 return JNI_ERR; | |
| 2835 } | |
| 2836 | |
| 2837 return JNI_OK; | |
| 2838 } | |
| 2839 | |
| 2840 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2841 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2842 scp_assembly_required_p); | |
| 2843 } | |
| 2844 | |
| 2845 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2846 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2847 scp_assembly_required_p); | |
| 2848 } | |
| 2849 | |
| 2850 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2851 const int N_MAX_OPTIONS = 64; | |
| 2852 const int OPTION_BUFFER_SIZE = 1024; | |
| 2853 char buffer[OPTION_BUFFER_SIZE]; | |
| 2854 | |
| 2855 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2856 // Don't check this variable if user has special privileges | |
| 2857 // (e.g. unix su command). | |
| 2858 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2859 !os::have_special_privileges()) { | |
| 2860 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2861 jio_fprintf(defaultStream::error_stream(), | |
| 2862 "Picked up %s: %s\n", name, buffer); | |
| 2863 char* rd = buffer; // pointer to the input string (rd) | |
| 2864 int i; | |
| 2865 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2866 while (isspace(*rd)) rd++; // skip whitespace | |
| 2867 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2868 | |
| 2869 // The output, option string, overwrites the input string. | |
| 2870 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2871 // input string (rd). | |
| 2872 char* wrt = rd; | |
| 2873 | |
| 2874 options[i++].optionString = wrt; // Fill in option | |
| 2875 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2876 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2877 int quote = *rd; // matching quote to look for | |
| 2878 rd++; // don't copy open quote | |
| 2879 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2880 if (*rd == 0) { // string termination means unmatched string | |
| 2881 jio_fprintf(defaultStream::error_stream(), | |
| 2882 "Unmatched quote in %s\n", name); | |
| 2883 return JNI_ERR; | |
| 2884 } | |
| 2885 *wrt++ = *rd++; // copy to option string | |
| 2886 } | |
| 2887 rd++; // don't copy close quote | |
| 2888 } else { | |
| 2889 *wrt++ = *rd++; // copy to option string | |
| 2890 } | |
| 2891 } | |
| 2892 // Need to check if we're done before writing a NULL, | |
| 2893 // because the write could be to the byte that rd is pointing to. | |
| 2894 if (*rd++ == 0) { | |
| 2895 *wrt = 0; | |
| 2896 break; | |
| 2897 } | |
| 2898 *wrt = 0; // Zero terminate option | |
| 2899 } | |
| 2900 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2901 JavaVMInitArgs vm_args; | |
| 2902 vm_args.version = JNI_VERSION_1_2; | |
| 2903 vm_args.options = options; | |
| 2904 vm_args.nOptions = i; | |
| 564 | 2905 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2906 |
| 2907 if (PrintVMOptions) { | |
| 2908 const char* tail; | |
| 2909 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2910 const JavaVMOption *option = vm_args.options + i; | |
| 2911 if (match_option(option, "-XX:", &tail)) { | |
| 2912 logOption(tail); | |
| 2913 } | |
| 2914 } | |
| 2915 } | |
| 2916 | |
| 2917 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2918 } | |
| 2919 return JNI_OK; | |
| 2920 } | |
| 2921 | |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
2922 |
| 0 | 2923 // Parse entry point called from JNI_CreateJavaVM |
| 2924 | |
| 2925 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2926 | |
| 2927 // Sharing support | |
| 2928 // Construct the path to the archive | |
| 2929 char jvm_path[JVM_MAXPATHLEN]; | |
| 2930 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2931 #ifdef TIERED | |
| 2932 if (strstr(jvm_path, "client") != NULL) { | |
| 2933 force_client_mode = true; | |
| 2934 } | |
| 2935 #endif // TIERED | |
| 2936 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2937 if (end != NULL) *end = '\0'; | |
| 2938 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2939 strlen(os::file_separator()) + 20); | |
| 2940 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2941 strcpy(shared_archive_path, jvm_path); | |
| 2942 strcat(shared_archive_path, os::file_separator()); | |
| 2943 strcat(shared_archive_path, "classes"); | |
| 2944 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2945 strcat(shared_archive_path, ".jsa"); | |
| 2946 SharedArchivePath = shared_archive_path; | |
| 2947 | |
| 2948 // Remaining part of option string | |
| 2949 const char* tail; | |
| 2950 | |
| 2951 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2952 bool settings_file_specified = false; | |
| 564 | 2953 const char* flags_file; |
| 0 | 2954 int index; |
| 2955 for (index = 0; index < args->nOptions; index++) { | |
| 2956 const JavaVMOption *option = args->options + index; | |
| 2957 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2958 flags_file = tail; |
| 0 | 2959 settings_file_specified = true; |
| 2960 } | |
| 2961 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2962 PrintVMOptions = true; | |
| 2963 } | |
|
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2964 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
|
2965 PrintVMOptions = false; |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2966 } |
| 564 | 2967 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2968 IgnoreUnrecognizedVMOptions = true; | |
| 2969 } | |
| 2970 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2971 IgnoreUnrecognizedVMOptions = false; | |
| 2972 } | |
| 1150 | 2973 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
| 2974 CommandLineFlags::printFlags(); | |
| 2975 vm_exit(0); | |
| 2976 } | |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2977 |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2978 #ifndef PRODUCT |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2979 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2980 CommandLineFlags::printFlags(true); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2981 vm_exit(0); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2982 } |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2983 #endif |
| 564 | 2984 } |
| 2985 | |
| 2986 if (IgnoreUnrecognizedVMOptions) { | |
| 2987 // uncast const to modify the flag args->ignoreUnrecognized | |
| 2988 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 2989 } | |
| 2990 | |
| 2991 // Parse specified settings file | |
| 2992 if (settings_file_specified) { | |
| 2993 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 2994 return JNI_EINVAL; | |
| 2995 } | |
| 0 | 2996 } |
| 2997 | |
| 2998 // Parse default .hotspotrc settings file | |
| 2999 if (!settings_file_specified) { | |
| 3000 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 3001 return JNI_EINVAL; | |
| 3002 } | |
| 3003 } | |
| 3004 | |
| 3005 if (PrintVMOptions) { | |
| 3006 for (index = 0; index < args->nOptions; index++) { | |
| 3007 const JavaVMOption *option = args->options + index; | |
| 3008 if (match_option(option, "-XX:", &tail)) { | |
| 3009 logOption(tail); | |
| 3010 } | |
| 3011 } | |
| 3012 } | |
| 3013 | |
| 3014 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 3015 jint result = parse_vm_init_args(args); | |
| 3016 if (result != JNI_OK) { | |
| 3017 return result; | |
| 3018 } | |
| 3019 | |
| 3020 #ifndef PRODUCT | |
| 3021 if (TraceBytecodesAt != 0) { | |
| 3022 TraceBytecodes = true; | |
| 3023 } | |
| 3024 if (CountCompiledCalls) { | |
| 3025 if (UseCounterDecay) { | |
| 3026 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 3027 UseCounterDecay = false; | |
| 3028 } | |
| 3029 } | |
| 3030 #endif // PRODUCT | |
| 3031 | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3032 if (EnableInvokeDynamic && !EnableMethodHandles) { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3033 if (!FLAG_IS_DEFAULT(EnableMethodHandles)) { |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3034 warning("forcing EnableMethodHandles true because EnableInvokeDynamic is true"); |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3035 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3036 EnableMethodHandles = true; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3037 } |
| 710 | 3038 if (EnableMethodHandles && !AnonymousClasses) { |
| 3039 if (!FLAG_IS_DEFAULT(AnonymousClasses)) { | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3040 warning("forcing AnonymousClasses true because EnableMethodHandles is true"); |
| 710 | 3041 } |
| 3042 AnonymousClasses = true; | |
| 3043 } | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3044 if ((EnableMethodHandles || AnonymousClasses) && ScavengeRootsInCode == 0) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3045 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3046 warning("forcing ScavengeRootsInCode non-zero because EnableMethodHandles or AnonymousClasses is true"); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3047 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3048 ScavengeRootsInCode = 1; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3049 } |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3050 #ifdef COMPILER2 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3051 if (EnableInvokeDynamic && DoEscapeAnalysis) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3052 // TODO: We need to find rules for invokedynamic and EA. For now, |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3053 // simply disable EA by default. |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3054 if (FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3055 DoEscapeAnalysis = false; |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3056 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3057 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3058 #endif |
| 710 | 3059 |
| 0 | 3060 if (PrintGCDetails) { |
| 3061 // Turn on -verbose:gc options as well | |
| 3062 PrintGC = true; | |
| 3063 } | |
| 3064 | |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3065 // 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
|
3066 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
|
3067 |
| 0 | 3068 #ifdef SERIALGC |
| 1064 | 3069 force_serial_gc(); |
| 0 | 3070 #endif // SERIALGC |
| 3071 #ifdef KERNEL | |
| 3072 no_shared_spaces(); | |
| 3073 #endif // KERNEL | |
| 3074 | |
| 3075 // Set flags based on ergonomics. | |
| 3076 set_ergonomics_flags(); | |
| 3077 | |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3078 #ifdef _LP64 |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
3079 if (UseCompressedOops) { |
|
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
3080 check_compressed_oops_compat(); |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3081 } |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
3082 #endif |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3083 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3084 // Check the GC selections again. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3085 if (!check_gc_consistency()) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3086 return JNI_EINVAL; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3087 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3088 |
| 1783 | 3089 if (TieredCompilation) { |
| 3090 set_tiered_flags(); | |
| 3091 } else { | |
| 3092 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
| 3093 if (CompilationPolicyChoice >= 2) { | |
| 3094 vm_exit_during_initialization( | |
| 3095 "Incompatible compilation policy selected", NULL); | |
| 3096 } | |
| 3097 } | |
| 3098 | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3099 #ifndef KERNEL |
| 1064 | 3100 if (UseConcMarkSweepGC) { |
| 3101 // Set flags for CMS and ParNew. Check UseConcMarkSweep first | |
| 3102 // to ensure that when both UseConcMarkSweepGC and UseParNewGC | |
| 3103 // are true, we don't call set_parnew_gc_flags() as well. | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3104 set_cms_and_parnew_gc_flags(); |
| 1064 | 3105 } else { |
| 3106 // Set heap size based on available physical memory | |
| 3107 set_heap_size(); | |
| 3108 // Set per-collector flags | |
| 3109 if (UseParallelGC || UseParallelOldGC) { | |
| 3110 set_parallel_gc_flags(); | |
| 3111 } else if (UseParNewGC) { | |
| 3112 set_parnew_gc_flags(); | |
| 3113 } else if (UseG1GC) { | |
| 3114 set_g1_gc_flags(); | |
| 3115 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3116 } |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3117 #endif // KERNEL |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3118 |
| 0 | 3119 #ifdef SERIALGC |
| 3120 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 3121 #endif // SERIALGC | |
| 3122 | |
| 3123 // Set bytecode rewriting flags | |
| 3124 set_bytecode_flags(); | |
| 3125 | |
| 3126 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 3127 set_aggressive_opts_flags(); | |
| 3128 | |
| 3129 #ifdef CC_INTERP | |
| 1131 | 3130 // Clear flags not supported by the C++ interpreter |
| 3131 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
| 0 | 3132 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
| 1131 | 3133 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
| 3134 #endif // CC_INTERP | |
| 3135 | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3136 #ifdef COMPILER2 |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3137 if (!UseBiasedLocking || EmitSync != 0) { |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3138 UseOptoBiasInlining = false; |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3139 } |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3140 #endif |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3141 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3142 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3143 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
|
3144 DebugNonSafepoints = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3145 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3146 |
|
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3147 #ifndef PRODUCT |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3148 if (CompileTheWorld) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3149 // 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
|
3150 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3151 NmethodSweepFraction = 1; |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3152 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3153 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3154 #endif |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3155 |
| 0 | 3156 if (PrintCommandLineFlags) { |
| 3157 CommandLineFlags::printSetFlags(); | |
| 3158 } | |
| 3159 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3160 // Apply CPU specific policy for the BiasedLocking |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3161 if (UseBiasedLocking) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3162 if (!VM_Version::use_biased_locking() && |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3163 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3164 UseBiasedLocking = false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3165 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3166 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3167 |
| 0 | 3168 return JNI_OK; |
| 3169 } | |
| 3170 | |
| 3171 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 3172 int count = 0; | |
| 3173 while(pl != NULL) { | |
| 3174 count++; | |
| 3175 pl = pl->next(); | |
| 3176 } | |
| 3177 return count; | |
| 3178 } | |
| 3179 | |
| 3180 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 3181 assert(key != NULL, "just checking"); | |
| 3182 SystemProperty* prop; | |
| 3183 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 3184 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 3185 } | |
| 3186 return NULL; | |
| 3187 } | |
| 3188 | |
| 3189 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 3190 int count = 0; | |
| 3191 const char* ret_val = NULL; | |
| 3192 | |
| 3193 while(pl != NULL) { | |
| 3194 if(count >= index) { | |
| 3195 ret_val = pl->key(); | |
| 3196 break; | |
| 3197 } | |
| 3198 count++; | |
| 3199 pl = pl->next(); | |
| 3200 } | |
| 3201 | |
| 3202 return ret_val; | |
| 3203 } | |
| 3204 | |
| 3205 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 3206 int count = 0; | |
| 3207 char* ret_val = NULL; | |
| 3208 | |
| 3209 while(pl != NULL) { | |
| 3210 if(count >= index) { | |
| 3211 ret_val = pl->value(); | |
| 3212 break; | |
| 3213 } | |
| 3214 count++; | |
| 3215 pl = pl->next(); | |
| 3216 } | |
| 3217 | |
| 3218 return ret_val; | |
| 3219 } | |
| 3220 | |
| 3221 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 3222 SystemProperty* p = *plist; | |
| 3223 if (p == NULL) { | |
| 3224 *plist = new_p; | |
| 3225 } else { | |
| 3226 while (p->next() != NULL) { | |
| 3227 p = p->next(); | |
| 3228 } | |
| 3229 p->set_next(new_p); | |
| 3230 } | |
| 3231 } | |
| 3232 | |
| 3233 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 3234 if (plist == NULL) | |
| 3235 return; | |
| 3236 | |
| 3237 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 3238 PropertyList_add(plist, new_p); | |
| 3239 } | |
| 3240 | |
| 3241 // This add maintains unique property key in the list. | |
| 691 | 3242 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 3243 if (plist == NULL) |
| 3244 return; | |
| 3245 | |
| 3246 // If property key exist then update with new value. | |
| 3247 SystemProperty* prop; | |
| 3248 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 3249 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 3250 if (append) { |
| 3251 prop->append_value(v); | |
| 3252 } else { | |
| 3253 prop->set_value(v); | |
| 3254 } | |
| 0 | 3255 return; |
| 3256 } | |
| 3257 } | |
| 3258 | |
| 3259 PropertyList_add(plist, k, v); | |
| 3260 } | |
| 3261 | |
| 3262 #ifdef KERNEL | |
| 3263 char *Arguments::get_kernel_properties() { | |
| 3264 // Find properties starting with kernel and append them to string | |
| 3265 // We need to find out how long they are first because the URL's that they | |
| 3266 // might point to could get long. | |
| 3267 int length = 0; | |
| 3268 SystemProperty* prop; | |
| 3269 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3270 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3271 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 3272 } | |
| 3273 } | |
| 3274 // Add one for null terminator. | |
| 3275 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 3276 if (length != 0) { | |
| 3277 int pos = 0; | |
| 3278 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3279 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3280 jio_snprintf(&props[pos], length-pos, | |
| 3281 "-D%s=%s ", prop->key(), prop->value()); | |
| 3282 pos = strlen(props); | |
| 3283 } | |
| 3284 } | |
| 3285 } | |
| 3286 // null terminate props in case of null | |
| 3287 props[length] = '\0'; | |
| 3288 return props; | |
| 3289 } | |
| 3290 #endif // KERNEL | |
| 3291 | |
| 3292 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 3293 // Returns true if all of the source pointed by src has been copied over to | |
| 3294 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 3295 // Notes: | |
| 3296 // 1. If the length (buflen) of the destination buffer excluding the | |
| 3297 // NULL terminator character is not long enough for holding the expanded | |
| 3298 // pid characters, it also returns false instead of returning the partially | |
| 3299 // expanded one. | |
| 3300 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 3301 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 3302 char* buf, size_t buflen) { | |
| 3303 const char* p = src; | |
| 3304 char* b = buf; | |
| 3305 const char* src_end = &src[srclen]; | |
| 3306 char* buf_end = &buf[buflen - 1]; | |
| 3307 | |
| 3308 while (p < src_end && b < buf_end) { | |
| 3309 if (*p == '%') { | |
| 3310 switch (*(++p)) { | |
| 3311 case '%': // "%%" ==> "%" | |
| 3312 *b++ = *p++; | |
| 3313 break; | |
| 3314 case 'p': { // "%p" ==> current process id | |
| 3315 // buf_end points to the character before the last character so | |
| 3316 // that we could write '\0' to the end of the buffer. | |
| 3317 size_t buf_sz = buf_end - b + 1; | |
| 3318 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 3319 | |
| 3320 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 3321 // the expanded pid, returns false. | |
| 3322 if (ret < 0 || ret >= (int)buf_sz) { | |
| 3323 return false; | |
| 3324 } else { | |
| 3325 b += ret; | |
| 3326 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 3327 if (p == src_end && b == buf_end + 1) { | |
| 3328 // reach the end of the buffer. | |
| 3329 return true; | |
| 3330 } | |
| 3331 } | |
| 3332 p++; | |
| 3333 break; | |
| 3334 } | |
| 3335 default : | |
| 3336 *b++ = '%'; | |
| 3337 } | |
| 3338 } else { | |
| 3339 *b++ = *p++; | |
| 3340 } | |
| 3341 } | |
| 3342 *b = '\0'; | |
| 3343 return (p == src_end); // return false if not all of the source was copied | |
| 3344 } |