Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 8854:754c24457b20
7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
Summary: Ergonomics now also takes available virtual memory into account when deciding for a heap size. The helper method to determine the maximum allocatable memory block now uses the appropriate OS specific calls to retrieve available virtual memory for the java process. In 32 bit environments this method now also searches for the maximum actually reservable amount of memory. Merge previously separate implementations for Linux/BSD/Solaris into a single method.
Reviewed-by: jmasa, tamao
| author | tschatzl |
|---|---|
| date | Wed, 27 Mar 2013 19:21:18 +0100 |
| parents | 7f16d1812865 |
| children | 15c04fe93c18 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/javaAssertions.hpp" | |
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27 #include "classfile/symbolTable.hpp" |
| 1972 | 28 #include "compiler/compilerOracle.hpp" |
| 29 #include "memory/allocation.inline.hpp" | |
| 30 #include "memory/cardTableRS.hpp" | |
| 31 #include "memory/referenceProcessor.hpp" | |
| 32 #include "memory/universe.inline.hpp" | |
| 33 #include "oops/oop.inline.hpp" | |
| 34 #include "prims/jvmtiExport.hpp" | |
| 35 #include "runtime/arguments.hpp" | |
| 36 #include "runtime/globals_extension.hpp" | |
| 37 #include "runtime/java.hpp" | |
| 38 #include "services/management.hpp" | |
| 6197 | 39 #include "services/memTracker.hpp" |
| 1972 | 40 #include "utilities/defaultStream.hpp" |
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41 #include "utilities/macros.hpp" |
| 1972 | 42 #include "utilities/taskqueue.hpp" |
| 43 #ifdef TARGET_OS_FAMILY_linux | |
| 44 # include "os_linux.inline.hpp" | |
| 45 #endif | |
| 46 #ifdef TARGET_OS_FAMILY_solaris | |
| 47 # include "os_solaris.inline.hpp" | |
| 48 #endif | |
| 49 #ifdef TARGET_OS_FAMILY_windows | |
| 50 # include "os_windows.inline.hpp" | |
| 51 #endif | |
| 3960 | 52 #ifdef TARGET_OS_FAMILY_bsd |
| 53 # include "os_bsd.inline.hpp" | |
| 54 #endif | |
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55 #if INCLUDE_ALL_GCS |
| 1972 | 56 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" |
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57 #endif // INCLUDE_ALL_GCS |
| 0 | 58 |
| 2474 | 59 // Note: This is a special bug reporting site for the JVM |
| 60 #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" | |
| 0 | 61 #define DEFAULT_JAVA_LAUNCHER "generic" |
| 62 | |
| 63 char** Arguments::_jvm_flags_array = NULL; | |
| 64 int Arguments::_num_jvm_flags = 0; | |
| 65 char** Arguments::_jvm_args_array = NULL; | |
| 66 int Arguments::_num_jvm_args = 0; | |
| 67 char* Arguments::_java_command = NULL; | |
| 68 SystemProperty* Arguments::_system_properties = NULL; | |
| 69 const char* Arguments::_gc_log_filename = NULL; | |
| 70 bool Arguments::_has_profile = false; | |
| 71 bool Arguments::_has_alloc_profile = false; | |
| 72 uintx Arguments::_min_heap_size = 0; | |
| 73 Arguments::Mode Arguments::_mode = _mixed; | |
| 74 bool Arguments::_java_compiler = false; | |
| 75 bool Arguments::_xdebug_mode = false; | |
| 76 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 77 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 78 int Arguments::_sun_java_launcher_pid = -1; | |
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79 bool Arguments::_created_by_gamma_launcher = false; |
| 0 | 80 |
| 81 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 82 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 83 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 84 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 85 bool Arguments::_ClipInlining = ClipInlining; | |
| 86 | |
| 87 char* Arguments::SharedArchivePath = NULL; | |
| 88 | |
| 89 AgentLibraryList Arguments::_libraryList; | |
| 90 AgentLibraryList Arguments::_agentList; | |
| 91 | |
| 92 abort_hook_t Arguments::_abort_hook = NULL; | |
| 93 exit_hook_t Arguments::_exit_hook = NULL; | |
| 94 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 95 | |
| 96 | |
| 97 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 98 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 99 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 100 SystemProperty *Arguments::_java_library_path = NULL; | |
| 101 SystemProperty *Arguments::_java_home = NULL; | |
| 102 SystemProperty *Arguments::_java_class_path = NULL; | |
| 103 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
| 104 | |
| 105 char* Arguments::_meta_index_path = NULL; | |
| 106 char* Arguments::_meta_index_dir = NULL; | |
| 107 | |
| 108 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 109 | |
| 110 static bool match_option(const JavaVMOption *option, const char* name, | |
| 111 const char** tail) { | |
| 112 int len = (int)strlen(name); | |
| 113 if (strncmp(option->optionString, name, len) == 0) { | |
| 114 *tail = option->optionString + len; | |
| 115 return true; | |
| 116 } else { | |
| 117 return false; | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 static void logOption(const char* opt) { | |
| 122 if (PrintVMOptions) { | |
| 123 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 // Process java launcher properties. | |
| 128 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 129 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 130 // Must do this before setting up other system properties, | |
| 131 // as some of them may depend on launcher type. | |
| 132 for (int index = 0; index < args->nOptions; index++) { | |
| 133 const JavaVMOption* option = args->options + index; | |
| 134 const char* tail; | |
| 135 | |
| 136 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 137 process_java_launcher_argument(tail, option->extraInfo); | |
| 138 continue; | |
| 139 } | |
| 140 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 141 _sun_java_launcher_pid = atoi(tail); | |
| 142 continue; | |
| 143 } | |
| 144 } | |
| 145 } | |
| 146 | |
| 147 // Initialize system properties key and value. | |
| 148 void Arguments::init_system_properties() { | |
| 149 | |
| 150 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 151 "Java Virtual Machine Specification", false)); | |
| 152 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 153 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 154 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 155 | |
| 156 // following are JVMTI agent writeable properties. | |
| 157 // Properties values are set to NULL and they are | |
| 158 // os specific they are initialized in os::init_system_properties_values(). | |
| 159 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 160 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 161 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 162 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 163 _java_home = new SystemProperty("java.home", NULL, true); | |
| 164 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
| 165 | |
| 166 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 167 | |
| 168 // Add to System Property list. | |
| 169 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 170 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 171 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 172 PropertyList_add(&_system_properties, _java_library_path); | |
| 173 PropertyList_add(&_system_properties, _java_home); | |
| 174 PropertyList_add(&_system_properties, _java_class_path); | |
| 175 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
| 176 | |
| 177 // Set OS specific system properties values | |
| 178 os::init_system_properties_values(); | |
| 179 } | |
| 180 | |
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181 |
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182 // Update/Initialize System properties after JDK version number is known |
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183 void Arguments::init_version_specific_system_properties() { |
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184 enum { bufsz = 16 }; |
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185 char buffer[bufsz]; |
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186 const char* spec_vendor = "Sun Microsystems Inc."; |
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187 uint32_t spec_version = 0; |
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188 |
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189 if (JDK_Version::is_gte_jdk17x_version()) { |
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190 spec_vendor = "Oracle Corporation"; |
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191 spec_version = JDK_Version::current().major_version(); |
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192 } |
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193 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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194 |
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195 PropertyList_add(&_system_properties, |
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196 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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197 PropertyList_add(&_system_properties, |
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198 new SystemProperty("java.vm.specification.version", buffer, false)); |
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199 PropertyList_add(&_system_properties, |
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200 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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201 } |
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202 |
| 242 | 203 /** |
| 204 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 205 * When a flag is eliminated, it can be added to this list in order to | |
| 206 * continue accepting this flag on the command-line, while issuing a warning | |
| 207 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 208 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 209 * a flag to die correctly over JDK releases using HSX. | |
| 210 */ | |
| 211 typedef struct { | |
| 212 const char* name; | |
| 213 JDK_Version obsoleted_in; // when the flag went away | |
| 214 JDK_Version accept_until; // which version to start denying the existence | |
| 215 } ObsoleteFlag; | |
| 0 | 216 |
| 242 | 217 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 218 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 219 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 220 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 221 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 222 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 223 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 224 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 225 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 226 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 227 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 228 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 229 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 230 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 231 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 1064 | 232 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
| 233 { "DefaultInitialRAMFraction", | |
| 234 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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235 { "UseDepthFirstScavengeOrder", |
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236 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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237 { "HandlePromotionFailure", |
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238 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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239 { "MaxLiveObjectEvacuationRatio", |
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240 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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241 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
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242 { "UseParallelOldGCCompacting", |
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243 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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244 { "UseParallelDensePrefixUpdate", |
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245 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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246 { "UseParallelOldGCDensePrefix", |
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247 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
| 2460 | 248 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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249 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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250 { "CMSPermGenPrecleaningEnabled", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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251 { "CMSTriggerPermRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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252 { "CMSInitiatingPermOccupancyFraction", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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253 { "AdaptivePermSizeWeight", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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254 { "PermGenPadding", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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255 { "PermMarkSweepDeadRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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256 { "PermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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257 { "MaxPermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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258 { "MinPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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259 { "MaxPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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260 { "CMSRevisitStackSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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261 { "PrintRevisitStats", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
| 6916 | 262 { "UseVectoredExceptions", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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263 #ifdef PRODUCT |
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264 { "DesiredMethodLimit", |
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265 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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266 #endif // PRODUCT |
| 242 | 267 { NULL, JDK_Version(0), JDK_Version(0) } |
| 268 }; | |
| 269 | |
| 270 // Returns true if the flag is obsolete and fits into the range specified | |
| 271 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 272 // value is filled in with the version number when the flag became | |
| 273 // obsolete so that that value can be displayed to the user. | |
| 274 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 275 int i = 0; |
| 242 | 276 assert(version != NULL, "Must provide a version buffer"); |
| 277 while (obsolete_jvm_flags[i].name != NULL) { | |
| 278 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 279 // <flag>=xxx form |
| 280 // [-|+]<flag> form | |
| 242 | 281 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 282 ((s[0] == '+' || s[0] == '-') && |
| 242 | 283 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 284 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 285 *version = flag_status.obsoleted_in; | |
| 286 return true; | |
| 287 } | |
| 0 | 288 } |
| 289 i++; | |
| 290 } | |
| 291 return false; | |
| 292 } | |
| 293 | |
| 294 // Constructs the system class path (aka boot class path) from the following | |
| 295 // components, in order: | |
| 296 // | |
| 297 // prefix // from -Xbootclasspath/p:... | |
| 298 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 299 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 300 // suffix // from -Xbootclasspath/a:... | |
| 301 // | |
| 302 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 303 // directories are added to the sysclasspath just before the base. | |
| 304 // | |
| 305 // This could be AllStatic, but it isn't needed after argument processing is | |
| 306 // complete. | |
| 307 class SysClassPath: public StackObj { | |
| 308 public: | |
| 309 SysClassPath(const char* base); | |
| 310 ~SysClassPath(); | |
| 311 | |
| 312 inline void set_base(const char* base); | |
| 313 inline void add_prefix(const char* prefix); | |
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314 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 315 inline void add_suffix(const char* suffix); |
| 316 inline void reset_path(const char* base); | |
| 317 | |
| 318 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 319 // property. Must be called after all command-line arguments have been | |
| 320 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 321 // combined_path(). | |
| 322 void expand_endorsed(); | |
| 323 | |
| 324 inline const char* get_base() const { return _items[_scp_base]; } | |
| 325 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 326 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 327 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 328 | |
| 329 // Combine all the components into a single c-heap-allocated string; caller | |
| 330 // must free the string if/when no longer needed. | |
| 331 char* combined_path(); | |
| 332 | |
| 333 private: | |
| 334 // Utility routines. | |
| 335 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 336 static char* add_jars_to_path(char* path, const char* directory); | |
| 337 | |
| 338 inline void reset_item_at(int index); | |
| 339 | |
| 340 // Array indices for the items that make up the sysclasspath. All except the | |
| 341 // base are allocated in the C heap and freed by this class. | |
| 342 enum { | |
| 343 _scp_prefix, // from -Xbootclasspath/p:... | |
| 344 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 345 _scp_base, // the default sysclasspath | |
| 346 _scp_suffix, // from -Xbootclasspath/a:... | |
| 347 _scp_nitems // the number of items, must be last. | |
| 348 }; | |
| 349 | |
| 350 const char* _items[_scp_nitems]; | |
| 351 DEBUG_ONLY(bool _expansion_done;) | |
| 352 }; | |
| 353 | |
| 354 SysClassPath::SysClassPath(const char* base) { | |
| 355 memset(_items, 0, sizeof(_items)); | |
| 356 _items[_scp_base] = base; | |
| 357 DEBUG_ONLY(_expansion_done = false;) | |
| 358 } | |
| 359 | |
| 360 SysClassPath::~SysClassPath() { | |
| 361 // Free everything except the base. | |
| 362 for (int i = 0; i < _scp_nitems; ++i) { | |
| 363 if (i != _scp_base) reset_item_at(i); | |
| 364 } | |
| 365 DEBUG_ONLY(_expansion_done = false;) | |
| 366 } | |
| 367 | |
| 368 inline void SysClassPath::set_base(const char* base) { | |
| 369 _items[_scp_base] = base; | |
| 370 } | |
| 371 | |
| 372 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 373 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 374 } | |
| 375 | |
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376 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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377 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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378 } |
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379 |
| 0 | 380 inline void SysClassPath::add_suffix(const char* suffix) { |
| 381 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 382 } | |
| 383 | |
| 384 inline void SysClassPath::reset_item_at(int index) { | |
| 385 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 386 if (_items[index] != NULL) { | |
| 6197 | 387 FREE_C_HEAP_ARRAY(char, _items[index], mtInternal); |
| 0 | 388 _items[index] = NULL; |
| 389 } | |
| 390 } | |
| 391 | |
| 392 inline void SysClassPath::reset_path(const char* base) { | |
| 393 // Clear the prefix and suffix. | |
| 394 reset_item_at(_scp_prefix); | |
| 395 reset_item_at(_scp_suffix); | |
| 396 set_base(base); | |
| 397 } | |
| 398 | |
| 399 //------------------------------------------------------------------------------ | |
| 400 | |
| 401 void SysClassPath::expand_endorsed() { | |
| 402 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 403 | |
| 404 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 405 if (path == NULL) { | |
| 406 path = Arguments::get_endorsed_dir(); | |
| 407 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 408 } | |
| 409 | |
| 410 char* expanded_path = NULL; | |
| 411 const char separator = *os::path_separator(); | |
| 412 const char* const end = path + strlen(path); | |
| 413 while (path < end) { | |
| 414 const char* tmp_end = strchr(path, separator); | |
| 415 if (tmp_end == NULL) { | |
| 416 expanded_path = add_jars_to_path(expanded_path, path); | |
| 417 path = end; | |
| 418 } else { | |
| 6197 | 419 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1, mtInternal); |
| 0 | 420 memcpy(dirpath, path, tmp_end - path); |
| 421 dirpath[tmp_end - path] = '\0'; | |
| 422 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 6197 | 423 FREE_C_HEAP_ARRAY(char, dirpath, mtInternal); |
| 0 | 424 path = tmp_end + 1; |
| 425 } | |
| 426 } | |
| 427 _items[_scp_endorsed] = expanded_path; | |
| 428 DEBUG_ONLY(_expansion_done = true;) | |
| 429 } | |
| 430 | |
| 431 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 432 // c-heap-allocated string. | |
| 433 char* SysClassPath::combined_path() { | |
| 434 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 435 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 436 | |
| 437 size_t lengths[_scp_nitems]; | |
| 438 size_t total_len = 0; | |
| 439 | |
| 440 const char separator = *os::path_separator(); | |
| 441 | |
| 442 // Get the lengths. | |
| 443 int i; | |
| 444 for (i = 0; i < _scp_nitems; ++i) { | |
| 445 if (_items[i] != NULL) { | |
| 446 lengths[i] = strlen(_items[i]); | |
| 447 // Include space for the separator char (or a NULL for the last item). | |
| 448 total_len += lengths[i] + 1; | |
| 449 } | |
| 450 } | |
| 451 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 452 | |
| 453 // Copy the _items to a single string. | |
| 6197 | 454 char* cp = NEW_C_HEAP_ARRAY(char, total_len, mtInternal); |
| 0 | 455 char* cp_tmp = cp; |
| 456 for (i = 0; i < _scp_nitems; ++i) { | |
| 457 if (_items[i] != NULL) { | |
| 458 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 459 cp_tmp += lengths[i]; | |
| 460 *cp_tmp++ = separator; | |
| 461 } | |
| 462 } | |
| 463 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 464 return cp; | |
| 465 } | |
| 466 | |
| 467 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 468 char* | |
| 469 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 470 char *cp; | |
| 471 | |
| 472 assert(str != NULL, "just checking"); | |
| 473 if (path == NULL) { | |
| 474 size_t len = strlen(str) + 1; | |
| 6197 | 475 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
| 0 | 476 memcpy(cp, str, len); // copy the trailing null |
| 477 } else { | |
| 478 const char separator = *os::path_separator(); | |
| 479 size_t old_len = strlen(path); | |
| 480 size_t str_len = strlen(str); | |
| 481 size_t len = old_len + str_len + 2; | |
| 482 | |
| 483 if (prepend) { | |
| 6197 | 484 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
| 0 | 485 char* cp_tmp = cp; |
| 486 memcpy(cp_tmp, str, str_len); | |
| 487 cp_tmp += str_len; | |
| 488 *cp_tmp = separator; | |
| 489 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 6197 | 490 FREE_C_HEAP_ARRAY(char, path, mtInternal); |
| 0 | 491 } else { |
| 6197 | 492 cp = REALLOC_C_HEAP_ARRAY(char, path, len, mtInternal); |
| 0 | 493 char* cp_tmp = cp + old_len; |
| 494 *cp_tmp = separator; | |
| 495 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 496 } | |
| 497 } | |
| 498 return cp; | |
| 499 } | |
| 500 | |
| 501 // Scan the directory and append any jar or zip files found to path. | |
| 502 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 503 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 504 DIR* dir = os::opendir(directory); | |
| 505 if (dir == NULL) return path; | |
| 506 | |
| 507 char dir_sep[2] = { '\0', '\0' }; | |
| 508 size_t directory_len = strlen(directory); | |
| 509 const char fileSep = *os::file_separator(); | |
| 510 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 511 | |
| 512 /* Scan the directory for jars/zips, appending them to path. */ | |
| 513 struct dirent *entry; | |
| 6197 | 514 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory), mtInternal); |
| 0 | 515 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
| 516 const char* name = entry->d_name; | |
| 517 const char* ext = name + strlen(name) - 4; | |
| 518 bool isJarOrZip = ext > name && | |
| 519 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 520 os::file_name_strcmp(ext, ".zip") == 0); | |
| 521 if (isJarOrZip) { | |
| 6197 | 522 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name), mtInternal); |
| 0 | 523 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
| 524 path = add_to_path(path, jarpath, false); | |
| 6197 | 525 FREE_C_HEAP_ARRAY(char, jarpath, mtInternal); |
| 0 | 526 } |
| 527 } | |
| 6197 | 528 FREE_C_HEAP_ARRAY(char, dbuf, mtInternal); |
| 0 | 529 os::closedir(dir); |
| 530 return path; | |
| 531 } | |
| 532 | |
| 533 // Parses a memory size specification string. | |
|
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534 static bool atomull(const char *s, julong* result) { |
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535 julong n = 0; |
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536 int args_read = sscanf(s, JULONG_FORMAT, &n); |
| 0 | 537 if (args_read != 1) { |
| 538 return false; | |
| 539 } | |
| 540 while (*s != '\0' && isdigit(*s)) { | |
| 541 s++; | |
| 542 } | |
| 543 // 4705540: illegal if more characters are found after the first non-digit | |
| 544 if (strlen(s) > 1) { | |
| 545 return false; | |
| 546 } | |
| 547 switch (*s) { | |
| 548 case 'T': case 't': | |
| 549 *result = n * G * K; | |
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550 // Check for overflow. |
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551 if (*result/((julong)G * K) != n) return false; |
| 0 | 552 return true; |
| 553 case 'G': case 'g': | |
| 554 *result = n * G; | |
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555 if (*result/G != n) return false; |
| 0 | 556 return true; |
| 557 case 'M': case 'm': | |
| 558 *result = n * M; | |
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559 if (*result/M != n) return false; |
| 0 | 560 return true; |
| 561 case 'K': case 'k': | |
| 562 *result = n * K; | |
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563 if (*result/K != n) return false; |
| 0 | 564 return true; |
| 565 case '\0': | |
| 566 *result = n; | |
| 567 return true; | |
| 568 default: | |
| 569 return false; | |
| 570 } | |
| 571 } | |
| 572 | |
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573 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 574 if (size < min_size) return arg_too_small; |
| 575 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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576 if (size > max_uintx) return arg_too_big; |
| 0 | 577 return arg_in_range; |
| 578 } | |
| 579 | |
| 580 // Describe an argument out of range error | |
| 581 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 582 switch(errcode) { | |
| 583 case arg_too_big: | |
| 584 jio_fprintf(defaultStream::error_stream(), | |
| 585 "The specified size exceeds the maximum " | |
| 586 "representable size.\n"); | |
| 587 break; | |
| 588 case arg_too_small: | |
| 589 case arg_unreadable: | |
| 590 case arg_in_range: | |
| 591 // do nothing for now | |
| 592 break; | |
| 593 default: | |
| 594 ShouldNotReachHere(); | |
| 595 } | |
| 596 } | |
| 597 | |
| 598 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 599 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 600 } | |
| 601 | |
| 602 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 603 double v; | |
| 604 if (sscanf(value, "%lf", &v) != 1) { | |
| 605 return false; | |
| 606 } | |
| 607 | |
| 608 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 609 return true; | |
| 610 } | |
| 611 return false; | |
| 612 } | |
| 613 | |
| 614 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
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615 julong v; |
| 0 | 616 intx intx_v; |
| 617 bool is_neg = false; | |
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618 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 619 if (*value == '-') { |
| 620 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 621 return false; | |
| 622 } | |
| 623 value++; | |
| 624 is_neg = true; | |
| 625 } | |
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626 if (!atomull(value, &v)) { |
| 0 | 627 return false; |
| 628 } | |
| 629 intx_v = (intx) v; | |
| 630 if (is_neg) { | |
| 631 intx_v = -intx_v; | |
| 632 } | |
| 633 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 634 return true; | |
| 635 } | |
| 636 uintx uintx_v = (uintx) v; | |
| 637 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 638 return true; | |
| 639 } | |
| 1064 | 640 uint64_t uint64_t_v = (uint64_t) v; |
| 641 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
| 642 return true; | |
| 643 } | |
| 0 | 644 return false; |
| 645 } | |
| 646 | |
| 647 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 648 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 649 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 6197 | 650 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
| 0 | 651 return true; |
| 652 } | |
| 653 | |
| 654 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 655 const char* old_value = ""; | |
| 656 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 657 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 658 size_t new_len = strlen(new_value); | |
| 659 const char* value; | |
| 660 char* free_this_too = NULL; | |
| 661 if (old_len == 0) { | |
| 662 value = new_value; | |
| 663 } else if (new_len == 0) { | |
| 664 value = old_value; | |
| 665 } else { | |
| 6197 | 666 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1, mtInternal); |
| 0 | 667 // each new setting adds another LINE to the switch: |
| 668 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 669 value = buf; | |
| 670 free_this_too = buf; | |
| 671 } | |
| 672 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 673 // CommandLineFlags always returns a pointer that needs freeing. | |
| 6197 | 674 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
| 0 | 675 if (free_this_too != NULL) { |
| 676 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 6197 | 677 FREE_C_HEAP_ARRAY(char, free_this_too, mtInternal); |
| 0 | 678 } |
| 679 return true; | |
| 680 } | |
| 681 | |
| 682 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 683 | |
| 684 // range of acceptable characters spelled out for portability reasons | |
| 685 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 686 #define BUFLEN 255 | |
| 687 char name[BUFLEN+1]; | |
| 688 char dummy; | |
| 689 | |
| 690 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 691 return set_bool_flag(name, false, origin); | |
| 692 } | |
| 693 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 694 return set_bool_flag(name, true, origin); | |
| 695 } | |
| 696 | |
| 697 char punct; | |
| 698 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 699 const char* value = strchr(arg, '=') + 1; | |
| 700 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 701 if (flag != NULL && flag->is_ccstr()) { | |
| 702 if (flag->ccstr_accumulates()) { | |
| 703 return append_to_string_flag(name, value, origin); | |
| 704 } else { | |
| 705 if (value[0] == '\0') { | |
| 706 value = NULL; | |
| 707 } | |
| 708 return set_string_flag(name, value, origin); | |
| 709 } | |
| 710 } | |
| 711 } | |
| 712 | |
| 713 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 714 const char* value = strchr(arg, '=') + 1; | |
| 715 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 716 if (value[0] == '\0') { | |
| 717 value = NULL; | |
| 718 } | |
| 719 return set_string_flag(name, value, origin); | |
| 720 } | |
| 721 | |
| 722 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 723 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 724 #define NUMBER_RANGE "[0123456789]" | |
| 725 char value[BUFLEN + 1]; | |
| 726 char value2[BUFLEN + 1]; | |
| 727 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 728 // Looks like a floating-point number -- try again with more lenient format string | |
| 729 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 730 return set_fp_numeric_flag(name, value, origin); | |
| 731 } | |
| 732 } | |
| 733 | |
| 734 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 735 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 736 return set_numeric_flag(name, value, origin); | |
| 737 } | |
| 738 | |
| 739 return false; | |
| 740 } | |
| 741 | |
| 742 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 743 assert(bldarray != NULL, "illegal argument"); | |
| 744 | |
| 745 if (arg == NULL) { | |
| 746 return; | |
| 747 } | |
| 748 | |
| 749 int index = *count; | |
| 750 | |
| 751 // expand the array and add arg to the last element | |
| 752 (*count)++; | |
| 753 if (*bldarray == NULL) { | |
| 6197 | 754 *bldarray = NEW_C_HEAP_ARRAY(char*, *count, mtInternal); |
| 0 | 755 } else { |
| 6197 | 756 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count, mtInternal); |
| 0 | 757 } |
| 758 (*bldarray)[index] = strdup(arg); | |
| 759 } | |
| 760 | |
| 761 void Arguments::build_jvm_args(const char* arg) { | |
| 762 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 763 } | |
| 764 | |
| 765 void Arguments::build_jvm_flags(const char* arg) { | |
| 766 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 767 } | |
| 768 | |
| 769 // utility function to return a string that concatenates all | |
| 770 // strings in a given char** array | |
| 771 const char* Arguments::build_resource_string(char** args, int count) { | |
| 772 if (args == NULL || count == 0) { | |
| 773 return NULL; | |
| 774 } | |
| 775 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 776 for (int i = 1; i < count; i++) { | |
| 777 length += strlen(args[i]) + 1; // add 1 for a space | |
| 778 } | |
| 779 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 780 strcpy(s, args[0]); | |
| 781 for (int j = 1; j < count; j++) { | |
| 782 strcat(s, " "); | |
| 783 strcat(s, args[j]); | |
| 784 } | |
| 785 return (const char*) s; | |
| 786 } | |
| 787 | |
| 788 void Arguments::print_on(outputStream* st) { | |
| 789 st->print_cr("VM Arguments:"); | |
| 790 if (num_jvm_flags() > 0) { | |
| 791 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 792 } | |
| 793 if (num_jvm_args() > 0) { | |
| 794 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 795 } | |
| 796 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
|
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797 if (_java_class_path != NULL) { |
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798 char* path = _java_class_path->value(); |
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799 st->print_cr("java_class_path (initial): %s", strlen(path) == 0 ? "<not set>" : path ); |
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800 } |
| 0 | 801 st->print_cr("Launcher Type: %s", _sun_java_launcher); |
| 802 } | |
| 803 | |
| 804 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 805 if (_num_jvm_flags > 0) { | |
| 806 for (int i=0; i < _num_jvm_flags; i++) { | |
| 807 st->print("%s ", _jvm_flags_array[i]); | |
| 808 } | |
| 809 st->print_cr(""); | |
| 810 } | |
| 811 } | |
| 812 | |
| 813 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 814 if (_num_jvm_args > 0) { | |
| 815 for (int i=0; i < _num_jvm_args; i++) { | |
| 816 st->print("%s ", _jvm_args_array[i]); | |
| 817 } | |
| 818 st->print_cr(""); | |
| 819 } | |
| 820 } | |
| 821 | |
| 242 | 822 bool Arguments::process_argument(const char* arg, |
| 823 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 824 | |
| 825 JDK_Version since = JDK_Version(); | |
| 0 | 826 |
| 3250 | 827 if (parse_argument(arg, origin) || ignore_unrecognized) { |
| 828 return true; | |
| 0 | 829 } |
| 3250 | 830 |
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831 bool has_plus_minus = (*arg == '+' || *arg == '-'); |
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832 const char* const argname = has_plus_minus ? arg + 1 : arg; |
| 3250 | 833 if (is_newly_obsolete(arg, &since)) { |
| 834 char version[256]; | |
| 835 since.to_string(version, sizeof(version)); | |
| 836 warning("ignoring option %s; support was removed in %s", argname, version); | |
| 837 return true; | |
| 838 } | |
| 839 | |
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840 // For locked flags, report a custom error message if available. |
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841 // Otherwise, report the standard unrecognized VM option. |
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842 |
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843 size_t arg_len; |
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844 const char* equal_sign = strchr(argname, '='); |
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845 if (equal_sign == NULL) { |
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846 arg_len = strlen(argname); |
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847 } else { |
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848 arg_len = equal_sign - argname; |
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849 } |
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850 |
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851 Flag* found_flag = Flag::find_flag((char*)argname, arg_len, true); |
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852 if (found_flag != NULL) { |
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853 char locked_message_buf[BUFLEN]; |
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854 found_flag->get_locked_message(locked_message_buf, BUFLEN); |
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855 if (strlen(locked_message_buf) == 0) { |
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856 if (found_flag->is_bool() && !has_plus_minus) { |
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857 jio_fprintf(defaultStream::error_stream(), |
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858 "Missing +/- setting for VM option '%s'\n", argname); |
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859 } else if (!found_flag->is_bool() && has_plus_minus) { |
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860 jio_fprintf(defaultStream::error_stream(), |
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861 "Unexpected +/- setting in VM option '%s'\n", argname); |
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862 } else { |
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863 jio_fprintf(defaultStream::error_stream(), |
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864 "Improperly specified VM option '%s'\n", argname); |
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865 } |
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866 } else { |
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867 jio_fprintf(defaultStream::error_stream(), "%s", locked_message_buf); |
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868 } |
| 6017 | 869 } else { |
| 870 jio_fprintf(defaultStream::error_stream(), | |
| 871 "Unrecognized VM option '%s'\n", argname); | |
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872 } |
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873 |
| 3250 | 874 // allow for commandline "commenting out" options like -XX:#+Verbose |
| 875 return arg[0] == '#'; | |
| 0 | 876 } |
| 877 | |
| 878 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 879 FILE* stream = fopen(file_name, "rb"); | |
| 880 if (stream == NULL) { | |
| 881 if (should_exist) { | |
| 882 jio_fprintf(defaultStream::error_stream(), | |
| 883 "Could not open settings file %s\n", file_name); | |
| 884 return false; | |
| 885 } else { | |
| 886 return true; | |
| 887 } | |
| 888 } | |
| 889 | |
| 890 char token[1024]; | |
| 891 int pos = 0; | |
| 892 | |
| 893 bool in_white_space = true; | |
| 894 bool in_comment = false; | |
| 895 bool in_quote = false; | |
| 896 char quote_c = 0; | |
| 897 bool result = true; | |
| 898 | |
| 899 int c = getc(stream); | |
| 6901 | 900 while(c != EOF && pos < (int)(sizeof(token)-1)) { |
| 0 | 901 if (in_white_space) { |
| 902 if (in_comment) { | |
| 903 if (c == '\n') in_comment = false; | |
| 904 } else { | |
| 905 if (c == '#') in_comment = true; | |
| 906 else if (!isspace(c)) { | |
| 907 in_white_space = false; | |
| 908 token[pos++] = c; | |
| 909 } | |
| 910 } | |
| 911 } else { | |
| 912 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 913 // token ends at newline, or at unquoted whitespace | |
| 914 // this allows a way to include spaces in string-valued options | |
| 915 token[pos] = '\0'; | |
| 916 logOption(token); | |
| 917 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 918 build_jvm_flags(token); | |
| 919 pos = 0; | |
| 920 in_white_space = true; | |
| 921 in_quote = false; | |
| 922 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 923 in_quote = true; | |
| 924 quote_c = c; | |
| 925 } else if (in_quote && (c == quote_c)) { | |
| 926 in_quote = false; | |
| 927 } else { | |
| 928 token[pos++] = c; | |
| 929 } | |
| 930 } | |
| 931 c = getc(stream); | |
| 932 } | |
| 933 if (pos > 0) { | |
| 934 token[pos] = '\0'; | |
| 935 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 936 build_jvm_flags(token); | |
| 937 } | |
| 938 fclose(stream); | |
| 939 return result; | |
| 940 } | |
| 941 | |
| 942 //============================================================================================================= | |
| 943 // Parsing of properties (-D) | |
| 944 | |
| 945 const char* Arguments::get_property(const char* key) { | |
| 946 return PropertyList_get_value(system_properties(), key); | |
| 947 } | |
| 948 | |
| 949 bool Arguments::add_property(const char* prop) { | |
| 950 const char* eq = strchr(prop, '='); | |
| 951 char* key; | |
| 952 // ns must be static--its address may be stored in a SystemProperty object. | |
| 953 const static char ns[1] = {0}; | |
| 954 char* value = (char *)ns; | |
| 955 | |
| 956 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 6197 | 957 key = AllocateHeap(key_len + 1, mtInternal); |
| 0 | 958 strncpy(key, prop, key_len); |
| 959 key[key_len] = '\0'; | |
| 960 | |
| 961 if (eq != NULL) { | |
| 962 size_t value_len = strlen(prop) - key_len - 1; | |
| 6197 | 963 value = AllocateHeap(value_len + 1, mtInternal); |
| 0 | 964 strncpy(value, &prop[key_len + 1], value_len + 1); |
| 965 } | |
| 966 | |
| 967 if (strcmp(key, "java.compiler") == 0) { | |
| 968 process_java_compiler_argument(value); | |
| 969 FreeHeap(key); | |
| 970 if (eq != NULL) { | |
| 971 FreeHeap(value); | |
| 972 } | |
| 973 return true; | |
| 691 | 974 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 975 _java_command = value; |
| 976 | |
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977 // Record value in Arguments, but let it get passed to Java. |
| 691 | 978 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 979 // launcher.pid property is private and is processed |
| 980 // in process_sun_java_launcher_properties(); | |
| 981 // the sun.java.launcher property is passed on to the java application | |
| 982 FreeHeap(key); | |
| 983 if (eq != NULL) { | |
| 984 FreeHeap(value); | |
| 985 } | |
| 986 return true; | |
| 691 | 987 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 988 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 989 // its value without going through the property list or making a Java call. | |
| 990 _java_vendor_url_bug = value; | |
| 691 | 991 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 992 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 993 return true; | |
| 0 | 994 } |
| 995 // Create new property and add at the end of the list | |
| 996 PropertyList_unique_add(&_system_properties, key, value); | |
| 997 return true; | |
| 998 } | |
| 999 | |
| 1000 //=========================================================================================================== | |
| 1001 // Setting int/mixed/comp mode flags | |
| 1002 | |
| 1003 void Arguments::set_mode_flags(Mode mode) { | |
| 1004 // Set up default values for all flags. | |
| 1005 // If you add a flag to any of the branches below, | |
| 1006 // add a default value for it here. | |
| 1007 set_java_compiler(false); | |
| 1008 _mode = mode; | |
| 1009 | |
| 1010 // Ensure Agent_OnLoad has the correct initial values. | |
| 1011 // This may not be the final mode; mode may change later in onload phase. | |
| 1012 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
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1013 (char*)VM_Version::vm_info_string(), false); |
| 0 | 1014 |
| 1015 UseInterpreter = true; | |
| 1016 UseCompiler = true; | |
| 1017 UseLoopCounter = true; | |
| 1018 | |
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1019 #ifndef ZERO |
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1020 // Turn these off for mixed and comp. Leave them on for Zero. |
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1021 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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1022 UseFastAccessorMethods = (mode == _int); |
|
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1023 } |
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1024 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
|
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1025 UseFastEmptyMethods = (mode == _int); |
|
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1026 } |
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1027 #endif |
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1028 |
| 0 | 1029 // Default values may be platform/compiler dependent - |
| 1030 // use the saved values | |
| 1031 ClipInlining = Arguments::_ClipInlining; | |
| 1032 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 1033 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 1034 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 1035 | |
| 1036 // Change from defaults based on mode | |
| 1037 switch (mode) { | |
| 1038 default: | |
| 1039 ShouldNotReachHere(); | |
| 1040 break; | |
| 1041 case _int: | |
| 1042 UseCompiler = false; | |
| 1043 UseLoopCounter = false; | |
| 1044 AlwaysCompileLoopMethods = false; | |
| 1045 UseOnStackReplacement = false; | |
| 1046 break; | |
| 1047 case _mixed: | |
| 1048 // same as default | |
| 1049 break; | |
| 1050 case _comp: | |
| 1051 UseInterpreter = false; | |
| 1052 BackgroundCompilation = false; | |
| 1053 ClipInlining = false; | |
|
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1054 // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
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1055 // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
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1056 // compile a level 4 (C2) and then continue executing it. |
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1057 if (TieredCompilation) { |
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1058 Tier3InvokeNotifyFreqLog = 0; |
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1059 Tier4InvocationThreshold = 0; |
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1060 } |
| 0 | 1061 break; |
| 1062 } | |
| 1063 } | |
| 1064 | |
| 1065 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 1066 // incompatible command line options were chosen. | |
| 1067 | |
| 1068 static void no_shared_spaces() { | |
| 1069 if (RequireSharedSpaces) { | |
| 1070 jio_fprintf(defaultStream::error_stream(), | |
| 1071 "Class data sharing is inconsistent with other specified options.\n"); | |
| 1072 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 1073 } else { | |
| 1074 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 1075 } | |
| 1076 } | |
| 1077 | |
| 1783 | 1078 void Arguments::set_tiered_flags() { |
|
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1079 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
| 1783 | 1080 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
|
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1081 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
| 1783 | 1082 } |
| 1083 if (CompilationPolicyChoice < 2) { | |
| 1084 vm_exit_during_initialization( | |
| 1085 "Incompatible compilation policy selected", NULL); | |
| 1086 } | |
|
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1087 // Increase the code cache size - tiered compiles a lot more. |
| 1783 | 1088 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
|
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1089 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 5); |
| 1783 | 1090 } |
| 1091 } | |
| 1092 | |
|
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1093 #if INCLUDE_ALL_GCS |
| 4838 | 1094 static void disable_adaptive_size_policy(const char* collector_name) { |
| 1095 if (UseAdaptiveSizePolicy) { | |
| 1096 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | |
| 1097 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | |
| 1098 collector_name); | |
| 1099 } | |
| 1100 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); | |
| 1101 } | |
| 1102 } | |
| 1103 | |
| 0 | 1104 void Arguments::set_parnew_gc_flags() { |
| 1064 | 1105 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
|
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1106 "control point invariant"); |
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1107 assert(UseParNewGC, "Error"); |
| 0 | 1108 |
| 4838 | 1109 // Turn off AdaptiveSizePolicy for parnew until it is complete. |
| 1110 disable_adaptive_size_policy("UseParNewGC"); | |
|
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1111 |
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1112 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { |
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1113 FLAG_SET_DEFAULT(ParallelGCThreads, Abstract_VM_Version::parallel_worker_threads()); |
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1114 assert(ParallelGCThreads > 0, "We should always have at least one thread by default"); |
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1115 } else if (ParallelGCThreads == 0) { |
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1116 jio_fprintf(defaultStream::error_stream(), |
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1117 "The ParNew GC can not be combined with -XX:ParallelGCThreads=0\n"); |
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1118 vm_exit(1); |
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1119 } |
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1120 |
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1121 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
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1122 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
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1123 // we set them to 1024 and 1024. |
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1124 // See CR 6362902. |
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1125 if (FLAG_IS_DEFAULT(YoungPLABSize)) { |
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1126 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); |
| 0 | 1127 } |
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1128 if (FLAG_IS_DEFAULT(OldPLABSize)) { |
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1129 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); |
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1130 } |
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1131 |
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1132 // AlwaysTenure flag should make ParNew promote all at first collection. |
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1133 // See CR 6362902. |
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1134 if (AlwaysTenure) { |
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1135 FLAG_SET_CMDLINE(uintx, MaxTenuringThreshold, 0); |
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1136 } |
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1137 // When using compressed oops, we use local overflow stacks, |
|
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1138 // rather than using a global overflow list chained through |
|
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1139 // the klass word of the object's pre-image. |
|
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1140 if (UseCompressedOops && !ParGCUseLocalOverflow) { |
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1141 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { |
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1142 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); |
| 0 | 1143 } |
|
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1144 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); |
| 0 | 1145 } |
|
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1146 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); |
| 0 | 1147 } |
| 1148 | |
| 1149 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1150 // sparc/solaris for certain applications, but would gain from | |
| 1151 // further optimization and tuning efforts, and would almost | |
| 1152 // certainly gain from analysis of platform and environment. | |
| 1153 void Arguments::set_cms_and_parnew_gc_flags() { | |
| 1064 | 1154 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
|
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1155 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
|
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1156 |
| 0 | 1157 // If we are using CMS, we prefer to UseParNewGC, |
| 1158 // unless explicitly forbidden. | |
|
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1159 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
|
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1160 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1161 } |
| 1162 | |
|
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1163 // Turn off AdaptiveSizePolicy by default for cms until it is complete. |
| 4838 | 1164 disable_adaptive_size_policy("UseConcMarkSweepGC"); |
| 0 | 1165 |
| 1166 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1167 // as needed. | |
|
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1168 if (UseParNewGC) { |
|
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1169 set_parnew_gc_flags(); |
| 0 | 1170 } |
| 1171 | |
|
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1172 size_t max_heap = align_size_down(MaxHeapSize, |
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1173 CardTableRS::ct_max_alignment_constraint()); |
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1174 |
| 0 | 1175 // Now make adjustments for CMS |
|
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1176 intx tenuring_default = (intx)6; |
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1177 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1178 |
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1179 // Preferred young gen size for "short" pauses: |
|
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1180 // upper bound depends on # of threads and NewRatio. |
| 0 | 1181 const uintx parallel_gc_threads = |
| 1182 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1183 const size_t preferred_max_new_size_unaligned = | |
|
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1184 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1185 size_t preferred_max_new_size = |
| 0 | 1186 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
| 1187 | |
| 1188 // Unless explicitly requested otherwise, size young gen | |
|
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1189 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
|
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1190 |
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1191 // If either MaxNewSize or NewRatio is set on the command line, |
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1192 // assume the user is trying to set the size of the young gen. |
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1193 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1194 |
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1195 // Set MaxNewSize to our calculated preferred_max_new_size unless |
|
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1196 // NewSize was set on the command line and it is larger than |
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1197 // preferred_max_new_size. |
| 0 | 1198 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
|
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1199 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1200 } else { |
|
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1201 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1202 } |
| 1064 | 1203 if (PrintGCDetails && Verbose) { |
|
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1204 // Too early to use gclog_or_tty |
|
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1205 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
|
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1206 } |
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1207 |
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1208 // Code along this path potentially sets NewSize and OldSize |
| 1064 | 1209 if (PrintGCDetails && Verbose) { |
|
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1210 // Too early to use gclog_or_tty |
|
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1211 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
|
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1212 " initial_heap_size: " SIZE_FORMAT |
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1213 " max_heap: " SIZE_FORMAT, |
| 1064 | 1214 min_heap_size(), InitialHeapSize, max_heap); |
|
13
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1215 } |
|
2368
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1216 size_t min_new = preferred_max_new_size; |
|
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1217 if (FLAG_IS_CMDLINE(NewSize)) { |
|
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1218 min_new = NewSize; |
|
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1219 } |
|
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1220 if (max_heap > min_new && min_heap_size() > min_new) { |
| 0 | 1221 // Unless explicitly requested otherwise, make young gen |
| 1222 // at least min_new, and at most preferred_max_new_size. | |
| 1223 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
13
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1224 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
|
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1225 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
| 1064 | 1226 if (PrintGCDetails && Verbose) { |
|
13
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1227 // Too early to use gclog_or_tty |
|
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1228 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
|
13
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1229 } |
| 0 | 1230 } |
| 1231 // Unless explicitly requested otherwise, size old gen | |
|
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1232 // so it's NewRatio x of NewSize. |
| 0 | 1233 if (FLAG_IS_DEFAULT(OldSize)) { |
| 1234 if (max_heap > NewSize) { | |
|
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1235 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
| 1064 | 1236 if (PrintGCDetails && Verbose) { |
|
13
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1237 // Too early to use gclog_or_tty |
|
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1238 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
|
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1239 } |
| 0 | 1240 } |
| 1241 } | |
| 1242 } | |
| 1243 } | |
| 1244 // Unless explicitly requested otherwise, definitely | |
| 1245 // promote all objects surviving "tenuring_default" scavenges. | |
| 1246 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1247 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 6818 | 1248 FLAG_SET_ERGO(uintx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1249 } |
| 1250 // If we decided above (or user explicitly requested) | |
| 1251 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1252 // prefer minuscule survivor spaces so as not to waste | |
| 1253 // space for (non-existent) survivors | |
| 1254 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
| 8035 | 1255 FLAG_SET_ERGO(uintx, SurvivorRatio, MAX2((uintx)1024, SurvivorRatio)); |
| 0 | 1256 } |
| 1257 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1258 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1259 // This is done in order to make ParNew+CMS configuration to work | |
| 1260 // with YoungPLABSize and OldPLABSize options. | |
| 1261 // See CR 6362902. | |
| 1262 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1263 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
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1264 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
|
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1265 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
|
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1266 // the value (either from the command line or ergonomics) of |
|
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1267 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
|
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1268 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
|
1145
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1269 } else { |
| 0 | 1270 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
| 1271 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1272 // we'll let it to take precedence. | |
| 1273 jio_fprintf(defaultStream::error_stream(), | |
|
886
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|
1274 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
|
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1275 " options are specified for the CMS collector." |
|
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1276 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
| 0 | 1277 } |
| 1278 } | |
|
1145
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1279 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
|
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1280 // OldPLAB sizing manually turned off: Use a larger default setting, |
|
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1281 // unless it was manually specified. This is because a too-low value |
|
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1282 // will slow down scavenges. |
|
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1283 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
|
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|
1284 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
|
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|
1285 } |
|
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|
1286 } |
|
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|
1287 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
|
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|
1288 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
|
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1289 // If either of the static initialization defaults have changed, note this |
|
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|
1290 // modification. |
|
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|
1291 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
|
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|
1292 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
|
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1293 } |
| 1284 | 1294 if (PrintGCDetails && Verbose) { |
| 1295 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1296 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1297 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1298 } | |
| 0 | 1299 } |
|
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|
1300 #endif // INCLUDE_ALL_GCS |
| 0 | 1301 |
|
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|
1302 void set_object_alignment() { |
|
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1303 // Object alignment. |
|
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1304 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
|
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|
1305 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
|
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1306 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
|
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|
1307 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
|
2d127394260e
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|
1308 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
|
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1309 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
|
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1310 |
|
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1311 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
|
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1312 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
|
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1313 |
|
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1314 // Oop encoding heap max |
|
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1315 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
|
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1316 |
|
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1317 #if INCLUDE_ALL_GCS |
|
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1318 // Set CMS global values |
|
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1319 CompactibleFreeListSpace::set_cms_values(); |
|
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1320 #endif // INCLUDE_ALL_GCS |
|
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1321 } |
|
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1322 |
|
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1323 bool verify_object_alignment() { |
|
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1324 // Object alignment. |
|
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1325 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
|
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1326 jio_fprintf(defaultStream::error_stream(), |
|
1829
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1327 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
|
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1328 (int)ObjectAlignmentInBytes); |
|
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1329 return false; |
|
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1330 } |
|
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1331 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
|
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1332 jio_fprintf(defaultStream::error_stream(), |
|
1829
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1333 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
|
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1334 (int)ObjectAlignmentInBytes, BytesPerLong); |
|
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1335 return false; |
|
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|
1336 } |
|
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|
1337 // It does not make sense to have big object alignment |
|
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1338 // since a space lost due to alignment will be greater |
|
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1339 // then a saved space from compressed oops. |
|
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|
1340 if ((int)ObjectAlignmentInBytes > 256) { |
|
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1341 jio_fprintf(defaultStream::error_stream(), |
|
7461
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1342 "error: ObjectAlignmentInBytes=%d must not be greater than 256\n", |
|
1829
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1343 (int)ObjectAlignmentInBytes); |
|
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|
1344 return false; |
|
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|
1345 } |
|
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1346 // In case page size is very small. |
|
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|
1347 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
|
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1348 jio_fprintf(defaultStream::error_stream(), |
|
7461
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1349 "error: ObjectAlignmentInBytes=%d must be less than page size %d\n", |
|
1829
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|
1350 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
|
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1351 return false; |
|
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1352 } |
|
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1353 return true; |
|
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1354 } |
|
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1355 |
|
135
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1356 inline uintx max_heap_for_compressed_oops() { |
| 1963 | 1357 // Avoid sign flip. |
|
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|
1358 if (OopEncodingHeapMax < ClassMetaspaceSize + os::vm_page_size()) { |
| 1963 | 1359 return 0; |
| 1360 } | |
|
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1361 LP64_ONLY(return OopEncodingHeapMax - ClassMetaspaceSize - os::vm_page_size()); |
| 1064 | 1362 NOT_LP64(ShouldNotReachHere(); return 0); |
|
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1363 } |
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1364 |
| 0 | 1365 bool Arguments::should_auto_select_low_pause_collector() { |
| 1366 if (UseAutoGCSelectPolicy && | |
| 1367 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1368 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1369 if (PrintGCDetails) { | |
| 1370 // Cannot use gclog_or_tty yet. | |
| 1371 tty->print_cr("Automatic selection of the low pause collector" | |
| 1372 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1373 } | |
| 1374 return true; | |
| 1375 } | |
| 1376 return false; | |
| 1377 } | |
| 1378 | |
|
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1379 void Arguments::set_use_compressed_oops() { |
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1380 #ifndef ZERO |
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1381 #ifdef _LP64 |
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1382 // MaxHeapSize is not set up properly at this point, but |
|
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1383 // the only value that can override MaxHeapSize if we are |
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1384 // to use UseCompressedOops is InitialHeapSize. |
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1385 size_t max_heap_size = MAX2(MaxHeapSize, InitialHeapSize); |
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1386 |
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1387 if (max_heap_size <= max_heap_for_compressed_oops()) { |
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1388 #if !defined(COMPILER1) || defined(TIERED) |
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1389 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
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1390 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
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1391 } |
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1392 #endif |
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1393 #ifdef _WIN64 |
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1394 if (UseLargePages && UseCompressedOops) { |
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1395 // Cannot allocate guard pages for implicit checks in indexed addressing |
|
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1396 // mode, when large pages are specified on windows. |
|
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1397 // This flag could be switched ON if narrow oop base address is set to 0, |
|
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1398 // see code in Universe::initialize_heap(). |
|
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1399 Universe::set_narrow_oop_use_implicit_null_checks(false); |
|
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1400 } |
|
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1401 #endif // _WIN64 |
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1402 } else { |
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1403 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
|
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1404 warning("Max heap size too large for Compressed Oops"); |
|
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1405 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1406 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1407 } |
|
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1408 } |
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1409 #endif // _LP64 |
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1410 #endif // ZERO |
|
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1411 } |
|
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1412 |
| 0 | 1413 void Arguments::set_ergonomics_flags() { |
| 1414 | |
| 4946 | 1415 if (os::is_server_class_machine()) { |
| 0 | 1416 // If no other collector is requested explicitly, |
| 1417 // let the VM select the collector based on | |
| 1418 // machine class and automatic selection policy. | |
| 1419 if (!UseSerialGC && | |
| 1420 !UseConcMarkSweepGC && | |
|
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1421 !UseG1GC && |
| 0 | 1422 !UseParNewGC && |
| 1423 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1424 if (should_auto_select_low_pause_collector()) { | |
| 1425 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1426 } else { | |
| 1427 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1428 } | |
|
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1429 } |
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1430 // Shared spaces work fine with other GCs but causes bytecode rewriting |
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1431 // to be disabled, which hurts interpreter performance and decreases |
|
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1432 // server performance. On server class machines, keep the default |
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1433 // off unless it is asked for. Future work: either add bytecode rewriting |
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1434 // at link time, or rewrite bytecodes in non-shared methods. |
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1435 if (!DumpSharedSpaces && !RequireSharedSpaces) { |
| 0 | 1436 no_shared_spaces(); |
| 1437 } | |
| 1438 } | |
|
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1439 |
| 1010 | 1440 #ifndef ZERO |
|
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1441 #ifdef _LP64 |
|
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1442 set_use_compressed_oops(); |
|
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1443 // UseCompressedOops must be on for UseCompressedKlassPointers to be on. |
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1444 if (!UseCompressedOops) { |
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1445 if (UseCompressedKlassPointers) { |
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1446 warning("UseCompressedKlassPointers requires UseCompressedOops"); |
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1447 } |
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1448 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1449 } else { |
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1450 // Turn on UseCompressedKlassPointers too |
|
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1451 if (FLAG_IS_DEFAULT(UseCompressedKlassPointers)) { |
|
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1452 FLAG_SET_ERGO(bool, UseCompressedKlassPointers, true); |
|
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1453 } |
|
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1454 // Set the ClassMetaspaceSize to something that will not need to be |
|
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1455 // expanded, since it cannot be expanded. |
|
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1456 if (UseCompressedKlassPointers) { |
|
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1457 if (ClassMetaspaceSize > KlassEncodingMetaspaceMax) { |
|
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|
1458 warning("Class metaspace size is too large for UseCompressedKlassPointers"); |
|
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|
1459 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
|
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1460 } else if (FLAG_IS_DEFAULT(ClassMetaspaceSize)) { |
|
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1461 // 100,000 classes seems like a good size, so 100M assumes around 1K |
|
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1462 // per klass. The vtable and oopMap is embedded so we don't have a fixed |
|
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1463 // size per klass. Eventually, this will be parameterized because it |
|
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1464 // would also be useful to determine the optimal size of the |
|
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1465 // systemDictionary. |
|
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|
1466 FLAG_SET_ERGO(uintx, ClassMetaspaceSize, 100*M); |
|
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1467 } |
|
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1468 } |
|
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1469 } |
|
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1470 // Also checks that certain machines are slower with compressed oops |
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1471 // in vm_version initialization code. |
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1472 #endif // _LP64 |
| 1010 | 1473 #endif // !ZERO |
| 0 | 1474 } |
| 1475 | |
| 1476 void Arguments::set_parallel_gc_flags() { | |
|
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1477 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 4879 | 1478 // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
| 1479 if (FLAG_IS_DEFAULT(UseParallelOldGC)) { | |
| 1480 FLAG_SET_DEFAULT(UseParallelOldGC, true); | |
| 0 | 1481 } |
| 4879 | 1482 FLAG_SET_DEFAULT(UseParallelGC, true); |
| 0 | 1483 |
| 1484 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1485 // of the physical memory, up to a maximum of 1GB. | |
|
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|
1486 FLAG_SET_DEFAULT(ParallelGCThreads, |
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|
1487 Abstract_VM_Version::parallel_worker_threads()); |
|
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1488 if (ParallelGCThreads == 0) { |
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|
1489 jio_fprintf(defaultStream::error_stream(), |
|
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|
1490 "The Parallel GC can not be combined with -XX:ParallelGCThreads=0\n"); |
|
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|
1491 vm_exit(1); |
|
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1492 } |
|
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1493 |
|
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1494 |
|
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|
1495 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
|
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1496 // SurvivorRatio has been set, reset their default values to SurvivorRatio + |
|
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|
1497 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. |
|
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1498 // See CR 6362902 for details. |
|
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1499 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { |
|
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1500 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { |
|
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|
1501 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); |
| 0 | 1502 } |
|
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1503 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { |
|
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|
1504 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); |
|
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|
1505 } |
|
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1506 } |
|
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1507 |
|
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|
1508 if (UseParallelOldGC) { |
|
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|
1509 // Par compact uses lower default values since they are treated as |
|
4c8bf5e55392
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|
1510 // minimums. These are different defaults because of the different |
|
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|
1511 // interpretation and are not ergonomically set. |
|
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|
1512 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
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|
1513 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1514 } |
| 1515 } | |
| 1516 } | |
| 1517 | |
|
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1518 void Arguments::set_g1_gc_flags() { |
|
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|
1519 assert(UseG1GC, "Error"); |
|
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|
1520 #ifdef COMPILER1 |
|
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|
1521 FastTLABRefill = false; |
|
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|
1522 #endif |
|
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|
1523 FLAG_SET_DEFAULT(ParallelGCThreads, |
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|
1524 Abstract_VM_Version::parallel_worker_threads()); |
|
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1525 if (ParallelGCThreads == 0) { |
|
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|
1526 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1527 Abstract_VM_Version::parallel_worker_threads()); |
|
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1528 } |
| 751 | 1529 |
|
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|
1530 // MarkStackSize will be set (if it hasn't been set by the user) |
|
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|
1531 // when concurrent marking is initialized. |
|
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|
1532 // Its value will be based upon the number of parallel marking threads. |
|
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|
1533 // But we do set the maximum mark stack size here. |
|
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|
1534 if (FLAG_IS_DEFAULT(MarkStackSizeMax)) { |
|
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|
1535 FLAG_SET_DEFAULT(MarkStackSizeMax, 128 * TASKQUEUE_SIZE); |
| 1284 | 1536 } |
| 1356 | 1537 |
| 1538 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
| 1539 // In G1, we want the default GC overhead goal to be higher than | |
| 1540 // say in PS. So we set it here to 10%. Otherwise the heap might | |
| 1541 // be expanded more aggressively than we would like it to. In | |
| 1542 // fact, even 10% seems to not be high enough in some cases | |
| 1543 // (especially small GC stress tests that the main thing they do | |
| 1544 // is allocation). We might consider increase it further. | |
| 1545 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
| 1546 } | |
|
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|
1547 |
|
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|
1548 if (PrintGCDetails && Verbose) { |
|
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|
1549 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
|
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|
1550 MarkStackSize / K, MarkStackSizeMax / K); |
|
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|
1551 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
|
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|
1552 } |
|
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|
1553 } |
|
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|
1554 |
|
8854
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1555 julong Arguments::limit_by_allocatable_memory(julong limit) { |
|
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|
1556 julong max_allocatable; |
|
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1557 julong result = limit; |
|
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|
1558 if (os::has_allocatable_memory_limit(&max_allocatable)) { |
|
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|
1559 result = MIN2(result, max_allocatable / MaxVirtMemFraction); |
|
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|
1560 } |
|
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|
1561 return result; |
|
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|
1562 } |
|
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|
1563 |
| 1064 | 1564 void Arguments::set_heap_size() { |
| 1565 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
| 1566 // Deprecated flag | |
| 1567 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
| 1568 } | |
| 1569 | |
| 1570 const julong phys_mem = | |
| 1571 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
| 1572 : (julong)MaxRAM; | |
| 1573 | |
| 1574 // If the maximum heap size has not been set with -Xmx, | |
| 1575 // then set it as fraction of the size of physical memory, | |
| 1576 // respecting the maximum and minimum sizes of the heap. | |
|
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|
1577 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
| 1064 | 1578 julong reasonable_max = phys_mem / MaxRAMFraction; |
| 1579 | |
| 1580 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
| 1581 // Small physical memory, so use a minimum fraction of it for the heap | |
| 1582 reasonable_max = phys_mem / MinRAMFraction; | |
| 1583 } else { | |
| 1584 // Not-small physical memory, so require a heap at least | |
| 1585 // as large as MaxHeapSize | |
| 1586 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
| 1587 } | |
| 1588 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
| 1589 // Limit the heap size to ErgoHeapSizeLimit | |
| 1590 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
|
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|
1591 } |
| 1064 | 1592 if (UseCompressedOops) { |
| 1593 // Limit the heap size to the maximum possible when using compressed oops | |
| 1963 | 1594 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
| 1595 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
| 1596 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
| 1597 // but it should be not less than default MaxHeapSize. | |
| 1598 max_coop_heap -= HeapBaseMinAddress; | |
| 1599 } | |
| 1600 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
| 1064 | 1601 } |
|
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|
1602 reasonable_max = limit_by_allocatable_memory(reasonable_max); |
| 1064 | 1603 |
| 1604 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
| 1605 // An initial heap size was specified on the command line, | |
| 1606 // so be sure that the maximum size is consistent. Done | |
|
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|
1607 // after call to limit_by_allocatable_memory because that |
| 1064 | 1608 // method might reduce the allocation size. |
| 1609 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
| 1610 } | |
| 1611 | |
|
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|
1612 if (PrintGCDetails && Verbose) { |
|
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|
1613 // Cannot use gclog_or_tty yet. |
| 1064 | 1614 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
|
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|
1615 } |
| 1064 | 1616 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
| 1617 } | |
| 1618 | |
| 1619 // If the initial_heap_size has not been set with InitialHeapSize | |
| 1620 // or -Xms, then set it as fraction of the size of physical memory, | |
| 1621 // respecting the maximum and minimum sizes of the heap. | |
| 1622 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
|
1074
84cb6f20afb3
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diff
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|
1623 julong reasonable_minimum = (julong)(OldSize + NewSize); |
|
84cb6f20afb3
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|
1624 |
|
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|
1625 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
|
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|
1626 |
|
8854
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|
1627 reasonable_minimum = limit_by_allocatable_memory(reasonable_minimum); |
|
1074
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|
1628 |
| 1064 | 1629 julong reasonable_initial = phys_mem / InitialRAMFraction; |
| 1630 | |
|
1074
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|
1631 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
| 1064 | 1632 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
| 1633 | |
|
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|
1634 reasonable_initial = limit_by_allocatable_memory(reasonable_initial); |
| 1064 | 1635 |
| 1636 if (PrintGCDetails && Verbose) { | |
| 1637 // Cannot use gclog_or_tty yet. | |
| 1638 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
|
1074
84cb6f20afb3
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|
1639 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
|
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|
1640 } |
| 1064 | 1641 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
|
1074
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|
1642 set_min_heap_size((uintx)reasonable_minimum); |
|
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|
1643 } |
|
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|
1644 } |
|
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|
1645 |
| 0 | 1646 // This must be called after ergonomics because we want bytecode rewriting |
| 1647 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1648 void Arguments::set_bytecode_flags() { | |
| 1649 // Better not attempt to store into a read-only space. | |
| 1650 if (UseSharedSpaces) { | |
| 1651 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1652 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1653 } | |
| 1654 | |
| 1655 if (!RewriteBytecodes) { | |
| 1656 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1657 } | |
| 1658 } | |
| 1659 | |
| 1660 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1661 void Arguments::set_aggressive_opts_flags() { | |
|
17
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|
1662 #ifdef COMPILER2 |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
diff
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|
1663 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
diff
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|
1664 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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parents:
0
diff
changeset
|
1665 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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0
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|
1666 } |
|
ff5961f4c095
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0
diff
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|
1667 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
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0
diff
changeset
|
1668 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
ff5961f4c095
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0
diff
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|
1669 } |
|
ff5961f4c095
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0
diff
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|
1670 |
|
ff5961f4c095
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0
diff
changeset
|
1671 // Feed the cache size setting into the JDK |
|
ff5961f4c095
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0
diff
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|
1672 char buffer[1024]; |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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489
diff
changeset
|
1673 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
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0
diff
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|
1674 add_property(buffer); |
|
ff5961f4c095
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diff
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|
1675 } |
|
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
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|
1676 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
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363
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|
1677 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
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363
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|
1678 } |
|
17
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|
1679 #endif |
|
ff5961f4c095
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|
1680 |
| 0 | 1681 if (AggressiveOpts) { |
| 61 | 1682 // Sample flag setting code |
| 1683 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1684 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1685 // } | |
| 0 | 1686 } |
| 1687 } | |
| 1688 | |
| 1689 //=========================================================================================================== | |
| 1690 // Parsing of java.compiler property | |
| 1691 | |
| 1692 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1693 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1694 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1695 // is also specified. | |
| 1696 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1697 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1698 } | |
| 1699 } | |
| 1700 | |
| 1701 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1702 _sun_java_launcher = strdup(launcher); | |
|
2302
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2243
diff
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|
1703 if (strcmp("gamma", _sun_java_launcher) == 0) { |
|
da091bb67459
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2243
diff
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|
1704 _created_by_gamma_launcher = true; |
|
da091bb67459
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|
1705 } |
| 0 | 1706 } |
| 1707 | |
| 1708 bool Arguments::created_by_java_launcher() { | |
| 1709 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1710 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1711 } | |
| 1712 | |
|
2302
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|
1713 bool Arguments::created_by_gamma_launcher() { |
|
da091bb67459
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diff
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|
1714 return _created_by_gamma_launcher; |
|
da091bb67459
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diff
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|
1715 } |
|
da091bb67459
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|
1716 |
| 0 | 1717 //=========================================================================================================== |
| 1718 // Parsing of main arguments | |
| 1719 | |
|
1244
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|
1720 bool Arguments::verify_interval(uintx val, uintx min, |
|
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|
1721 uintx max, const char* name) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1722 // Returns true iff value is in the inclusive interval [min..max] |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1723 // false, otherwise. |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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changeset
|
1724 if (val >= min && val <= max) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1725 return true; |
|
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1726 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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changeset
|
1727 jio_fprintf(defaultStream::error_stream(), |
|
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|
1728 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1729 " and " UINTX_FORMAT "\n", |
|
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changeset
|
1730 name, val, min, max); |
|
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|
1731 return false; |
|
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|
1732 } |
|
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|
1733 |
|
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|
1734 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
|
2366
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|
1735 // Returns true if given value is at least specified min threshold |
|
1744
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|
1736 // false, otherwise. |
|
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|
1737 if (val >= min ) { |
|
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|
1738 return true; |
|
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|
1739 } |
|
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|
1740 jio_fprintf(defaultStream::error_stream(), |
|
2366
1fb790245268
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|
1741 "%s of " INTX_FORMAT " is invalid; must be at least " INTX_FORMAT "\n", |
|
1744
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|
1742 name, val, min); |
|
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|
1743 return false; |
|
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|
1744 } |
|
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|
1745 |
| 0 | 1746 bool Arguments::verify_percentage(uintx value, const char* name) { |
| 1747 if (value <= 100) { | |
| 1748 return true; | |
| 1749 } | |
| 1750 jio_fprintf(defaultStream::error_stream(), | |
| 1751 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1752 name, value); | |
| 1753 return false; | |
| 1754 } | |
| 1755 | |
| 1756 static bool verify_serial_gc_flags() { | |
| 1757 return (UseSerialGC && | |
|
945
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6872136: CMS: confusing message may be printed when a collector is switched off implicitly
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|
1758 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
|
342
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changeset
|
1759 UseParallelGC || UseParallelOldGC)); |
| 0 | 1760 } |
| 1761 | |
|
3767
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|
1762 // check if do gclog rotation |
|
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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|
1763 // +UseGCLogFileRotation is a must, |
|
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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|
1764 // no gc log rotation when log file not supplied or |
|
2a241e764894
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|
1765 // NumberOfGCLogFiles is 0, or GCLogFileSize is 0 |
|
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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|
1766 void check_gclog_consistency() { |
|
2a241e764894
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|
1767 if (UseGCLogFileRotation) { |
|
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|
1768 if ((Arguments::gc_log_filename() == NULL) || |
|
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|
1769 (NumberOfGCLogFiles == 0) || |
|
2a241e764894
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|
1770 (GCLogFileSize == 0)) { |
|
2a241e764894
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changeset
|
1771 jio_fprintf(defaultStream::output_stream(), |
|
3769
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7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
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3767
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changeset
|
1772 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>\n" |
|
3767
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changeset
|
1773 "where num_of_file > 0 and num_of_size > 0\n" |
|
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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changeset
|
1774 "GC log rotation is turned off\n"); |
|
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|
1775 UseGCLogFileRotation = false; |
|
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|
1776 } |
|
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|
1777 } |
|
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|
1778 |
|
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|
1779 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
|
2a241e764894
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changeset
|
1780 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K); |
|
2a241e764894
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|
1781 jio_fprintf(defaultStream::output_stream(), |
|
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changeset
|
1782 "GCLogFileSize changed to minimum 8K\n"); |
|
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|
1783 } |
|
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|
1784 } |
|
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changeset
|
1785 |
|
10
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|
1786 // Check consistency of GC selection |
|
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|
1787 bool Arguments::check_gc_consistency() { |
|
3767
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|
1788 check_gclog_consistency(); |
|
10
28372612af5e
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|
1789 bool status = true; |
|
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|
1790 // Ensure that the user has not selected conflicting sets |
|
28372612af5e
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diff
changeset
|
1791 // of collectors. [Note: this check is merely a user convenience; |
|
28372612af5e
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0
diff
changeset
|
1792 // collectors over-ride each other so that only a non-conflicting |
|
28372612af5e
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diff
changeset
|
1793 // set is selected; however what the user gets is not what they |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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diff
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|
1794 // may have expected from the combination they asked for. It's |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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diff
changeset
|
1795 // better to reduce user confusion by not allowing them to |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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diff
changeset
|
1796 // select conflicting combinations. |
|
28372612af5e
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0
diff
changeset
|
1797 uint i = 0; |
|
28372612af5e
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diff
changeset
|
1798 if (UseSerialGC) i++; |
|
28372612af5e
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diff
changeset
|
1799 if (UseConcMarkSweepGC || UseParNewGC) i++; |
|
28372612af5e
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0
diff
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|
1800 if (UseParallelGC || UseParallelOldGC) i++; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
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751
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|
1801 if (UseG1GC) i++; |
|
10
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|
1802 if (i > 1) { |
|
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|
1803 jio_fprintf(defaultStream::error_stream(), |
|
28372612af5e
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|
1804 "Conflicting collector combinations in option list; " |
|
28372612af5e
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|
1805 "please refer to the release notes for the combinations " |
|
28372612af5e
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|
1806 "allowed\n"); |
|
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diff
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|
1807 status = false; |
|
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|
1808 } |
|
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|
1809 |
|
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|
1810 return status; |
|
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|
1811 } |
|
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|
1812 |
|
7452
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|
1813 void Arguments::check_deprecated_gcs() { |
|
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|
1814 if (UseConcMarkSweepGC && !UseParNewGC) { |
|
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|
1815 warning("Using the DefNew young collector with the CMS collector is deprecated " |
|
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|
1816 "and will likely be removed in a future release"); |
|
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|
1817 } |
|
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|
1818 |
|
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changeset
|
1819 if (UseParNewGC && !UseConcMarkSweepGC) { |
|
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|
1820 // !UseConcMarkSweepGC means that we are using serial old gc. Unfortunately we don't |
|
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|
1821 // set up UseSerialGC properly, so that can't be used in the check here. |
|
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|
1822 warning("Using the ParNew young collector with the Serial old collector is deprecated " |
|
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changeset
|
1823 "and will likely be removed in a future release"); |
|
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|
1824 } |
| 7453 | 1825 |
| 1826 if (CMSIncrementalMode) { | |
| 1827 warning("Using incremental CMS is deprecated and will likely be removed in a future release"); | |
| 1828 } | |
|
7452
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|
1829 } |
|
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|
1830 |
| 8734 | 1831 void Arguments::check_deprecated_gc_flags() { |
| 1832 if (FLAG_IS_CMDLINE(MaxGCMinorPauseMillis)) { | |
| 1833 warning("Using MaxGCMinorPauseMillis as minor pause goal is deprecated" | |
| 1834 "and will likely be removed in future release"); | |
| 1835 } | |
| 1836 } | |
| 1837 | |
|
1744
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|
1838 // Check stack pages settings |
|
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|
1839 bool Arguments::check_stack_pages() |
|
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|
1840 { |
|
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|
1841 bool status = true; |
|
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|
1842 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
|
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|
1843 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
|
1867
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changeset
|
1844 // greater stack shadow pages can't generate instruction to bang stack |
|
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|
1845 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
|
1744
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|
1846 return status; |
|
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|
1847 } |
|
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|
1848 |
| 0 | 1849 // Check the consistency of vm_init_args |
| 1850 bool Arguments::check_vm_args_consistency() { | |
| 1851 // Method for adding checks for flag consistency. | |
| 1852 // The intent is to warn the user of all possible conflicts, | |
| 1853 // before returning an error. | |
| 1854 // Note: Needs platform-dependent factoring. | |
| 1855 bool status = true; | |
| 1856 | |
| 1857 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1858 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1859 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1860 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1861 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1862 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1863 extern void VM_Version_init(); | |
| 1864 VM_Version_init(); | |
| 1865 if (!VM_Version::has_v9()) { | |
| 1866 jio_fprintf(defaultStream::error_stream(), | |
| 1867 "V8 Machine detected, Server requires V9\n"); | |
| 1868 status = false; | |
| 1869 } | |
| 1870 #endif /* COMPILER2 && SPARC */ | |
| 1871 | |
| 1872 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1873 // builds so the cost of stack banging can be measured. | |
| 1874 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1875 if (!UseBoundThreads && !UseStackBanging) { | |
| 1876 jio_fprintf(defaultStream::error_stream(), | |
| 1877 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1878 | |
| 1879 status = false; | |
| 1880 } | |
| 1881 #endif | |
| 1882 | |
| 1883 if (TLABRefillWasteFraction == 0) { | |
| 1884 jio_fprintf(defaultStream::error_stream(), | |
| 1885 "TLABRefillWasteFraction should be a denominator, " | |
| 1886 "not " SIZE_FORMAT "\n", | |
| 1887 TLABRefillWasteFraction); | |
| 1888 status = false; | |
| 1889 } | |
| 1890 | |
|
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1891 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1892 "AdaptiveSizePolicyWeight"); |
|
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1893 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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1894 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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1895 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1896 |
|
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1897 // Divide by bucket size to prevent a large size from causing rollover when |
|
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1898 // calculating amount of memory needed to be allocated for the String table. |
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1899 status = status && verify_interval(StringTableSize, defaultStringTableSize, |
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1900 (max_uintx / StringTable::bucket_size()), "StringTable size"); |
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1901 |
| 0 | 1902 if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
| 1903 jio_fprintf(defaultStream::error_stream(), | |
| 1904 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1905 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1906 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1907 status = false; | |
| 1908 } | |
| 1909 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1910 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1911 | |
|
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1912 // Min/MaxMetaspaceFreeRatio |
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1913 status = status && verify_percentage(MinMetaspaceFreeRatio, "MinMetaspaceFreeRatio"); |
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1914 status = status && verify_percentage(MaxMetaspaceFreeRatio, "MaxMetaspaceFreeRatio"); |
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1915 |
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1916 if (MinMetaspaceFreeRatio > MaxMetaspaceFreeRatio) { |
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1917 jio_fprintf(defaultStream::error_stream(), |
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1918 "MinMetaspaceFreeRatio (%s" UINTX_FORMAT ") must be less than or " |
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1919 "equal to MaxMetaspaceFreeRatio (%s" UINTX_FORMAT ")\n", |
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1920 FLAG_IS_DEFAULT(MinMetaspaceFreeRatio) ? "Default: " : "", |
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1921 MinMetaspaceFreeRatio, |
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1922 FLAG_IS_DEFAULT(MaxMetaspaceFreeRatio) ? "Default: " : "", |
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1923 MaxMetaspaceFreeRatio); |
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1924 status = false; |
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1925 } |
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1926 |
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1927 // Trying to keep 100% free is not practical |
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1928 MinMetaspaceFreeRatio = MIN2(MinMetaspaceFreeRatio, (uintx) 99); |
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1929 |
| 0 | 1930 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { |
| 1931 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1932 } | |
| 1933 | |
|
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1934 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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1935 // Settings to encourage splitting. |
|
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1936 if (!FLAG_IS_CMDLINE(NewRatio)) { |
| 8035 | 1937 FLAG_SET_CMDLINE(uintx, NewRatio, 2); |
|
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1938 } |
|
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1939 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
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1940 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
|
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1941 } |
|
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1942 } |
|
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1943 |
|
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1944 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1945 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1946 if (GCTimeLimit == 100) { |
| 1947 // Turn off gc-overhead-limit-exceeded checks | |
| 1948 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1949 } | |
| 1950 | |
|
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1951 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1952 |
|
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1953 status = status && check_gc_consistency(); |
|
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|
1954 status = status && check_stack_pages(); |
| 0 | 1955 |
| 1956 if (_has_alloc_profile) { | |
| 1957 if (UseParallelGC || UseParallelOldGC) { | |
| 1958 jio_fprintf(defaultStream::error_stream(), | |
| 1959 "error: invalid argument combination.\n" | |
| 1960 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1961 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1962 status = false; | |
| 1963 } | |
| 1964 if (UseConcMarkSweepGC) { | |
| 1965 jio_fprintf(defaultStream::error_stream(), | |
| 1966 "error: invalid argument combination.\n" | |
| 1967 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1968 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1969 status = false; | |
| 1970 } | |
| 1971 } | |
| 1972 | |
| 1973 if (CMSIncrementalMode) { | |
| 1974 if (!UseConcMarkSweepGC) { | |
| 1975 jio_fprintf(defaultStream::error_stream(), | |
| 1976 "error: invalid argument combination.\n" | |
| 1977 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1978 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1979 status = false; | |
| 1980 } else { | |
|
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1981 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1982 "CMSIncrementalDutyCycle"); |
|
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1983 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1984 "CMSIncrementalDutyCycleMin"); |
|
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1985 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1986 "CMSIncrementalSafetyFactor"); |
|
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1987 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1988 "CMSIncrementalOffset"); |
|
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|
1989 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1990 "CMSExpAvgFactor"); |
| 1991 // If it was not set on the command line, set | |
| 1992 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1993 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1994 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1995 } | |
| 1996 } | |
| 1997 } | |
| 1998 | |
| 1999 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 2000 // insists that we hold the requisite locks so that the iteration is | |
| 2001 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 2002 // yet have a good way of acquiring and releasing these locks, | |
| 2003 // which are not visible at the CollectedHeap level. We want to | |
| 2004 // be able to acquire these locks and then do the iteration rather | |
| 2005 // than just disable the lock verification. This will be fixed under | |
| 2006 // bug 4788986. | |
| 2007 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 2008 if (VerifyGCStartAt == 0) { | |
| 2009 warning("Heap verification at start-up disabled " | |
| 2010 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 2011 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 2012 } | |
| 2013 if (VerifyBeforeExit) { | |
| 2014 warning("Heap verification at shutdown disabled " | |
| 2015 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 2016 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 2017 } | |
| 2018 } | |
| 2019 | |
| 2020 // Note: only executed in non-PRODUCT mode | |
| 2021 if (!UseAsyncConcMarkSweepGC && | |
| 2022 (ExplicitGCInvokesConcurrent || | |
| 2023 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 2024 jio_fprintf(defaultStream::error_stream(), | |
|
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|
2025 "error: +ExplicitGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
| 0 | 2026 " with -UseAsyncConcMarkSweepGC"); |
| 2027 status = false; | |
| 2028 } | |
| 2029 | |
|
2366
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|
2030 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
|
1fb790245268
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|
2031 |
|
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|
2032 #if INCLUDE_ALL_GCS |
|
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|
2033 if (UseG1GC) { |
|
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|
2034 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
|
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|
2035 "InitiatingHeapOccupancyPercent"); |
|
2174
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|
2036 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
|
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|
2037 "G1RefProcDrainInterval"); |
|
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|
2038 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
|
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|
2039 "G1ConcMarkStepDurationMillis"); |
|
1283
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|
2040 } |
|
8001
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|
2041 #endif // INCLUDE_ALL_GCS |
|
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|
2042 |
|
1244
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|
2043 status = status && verify_interval(RefDiscoveryPolicy, |
|
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|
2044 ReferenceProcessor::DiscoveryPolicyMin, |
|
745c853ee57f
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|
2045 ReferenceProcessor::DiscoveryPolicyMax, |
|
745c853ee57f
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|
2046 "RefDiscoveryPolicy"); |
|
745c853ee57f
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|
2047 |
|
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|
2048 // Limit the lower bound of this flag to 1 as it is used in a division |
|
745c853ee57f
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|
2049 // expression. |
|
745c853ee57f
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|
2050 status = status && verify_interval(TLABWasteTargetPercent, |
|
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|
2051 1, 100, "TLABWasteTargetPercent"); |
|
745c853ee57f
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|
2052 |
|
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|
2053 status = status && verify_object_alignment(); |
|
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|
2054 |
|
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|
2055 status = status && verify_min_value(ClassMetaspaceSize, 1*M, |
|
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|
2056 "ClassMetaspaceSize"); |
|
11fb740ce98f
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|
2057 |
|
7397
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|
2058 status = status && verify_interval(MarkStackSizeMax, |
|
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|
2059 1, (max_jint - 1), "MarkStackSizeMax"); |
|
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|
2060 |
|
6755
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|
2061 #ifdef SPARC |
|
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|
2062 if (UseConcMarkSweepGC || UseG1GC) { |
|
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|
2063 // Issue a stern warning if the user has explicitly set |
|
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|
2064 // UseMemSetInBOT (it is known to cause issues), but allow |
|
bc675e55b48c
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|
2065 // use for experimentation and debugging. |
|
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|
2066 if (VM_Version::is_sun4v() && UseMemSetInBOT) { |
|
bc675e55b48c
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|
2067 assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error"); |
|
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|
2068 warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability" |
|
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2069 " on sun4v; please understand that you are using at your own risk!"); |
|
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|
2070 } |
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|
2071 } |
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|
2072 #endif // SPARC |
|
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2073 |
|
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2074 if (PrintNMTStatistics) { |
|
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|
2075 #if INCLUDE_NMT |
|
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2076 if (MemTracker::tracking_level() == MemTracker::NMT_off) { |
|
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2077 #endif // INCLUDE_NMT |
|
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2078 warning("PrintNMTStatistics is disabled, because native memory tracking is not enabled"); |
|
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2079 PrintNMTStatistics = false; |
|
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2080 #if INCLUDE_NMT |
|
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2081 } |
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2082 #endif |
|
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2083 } |
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|
2084 |
| 0 | 2085 return status; |
| 2086 } | |
| 2087 | |
| 2088 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 2089 const char* option_type) { | |
| 2090 if (ignore) return false; | |
| 2091 | |
| 2092 const char* spacer = " "; | |
| 2093 if (option_type == NULL) { | |
| 2094 option_type = ++spacer; // Set both to the empty string. | |
| 2095 } | |
| 2096 | |
| 2097 if (os::obsolete_option(option)) { | |
| 2098 jio_fprintf(defaultStream::error_stream(), | |
| 2099 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 2100 option->optionString); | |
| 2101 return false; | |
| 2102 } else { | |
| 2103 jio_fprintf(defaultStream::error_stream(), | |
| 2104 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 2105 option->optionString); | |
| 2106 return true; | |
| 2107 } | |
| 2108 } | |
| 2109 | |
| 2110 static const char* user_assertion_options[] = { | |
| 2111 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 2112 }; | |
| 2113 | |
| 2114 static const char* system_assertion_options[] = { | |
| 2115 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 2116 }; | |
| 2117 | |
| 2118 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 2119 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 2120 // the option must match exactly. | |
| 2121 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 2122 bool tail_allowed) { | |
| 2123 for (/* empty */; *names != NULL; ++names) { | |
| 2124 if (match_option(option, *names, tail)) { | |
| 2125 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 2126 return true; | |
| 2127 } | |
| 2128 } | |
| 2129 } | |
| 2130 return false; | |
| 2131 } | |
| 2132 | |
| 1284 | 2133 bool Arguments::parse_uintx(const char* value, |
| 2134 uintx* uintx_arg, | |
| 2135 uintx min_size) { | |
| 2136 | |
| 2137 // Check the sign first since atomull() parses only unsigned values. | |
| 2138 bool value_is_positive = !(*value == '-'); | |
| 2139 | |
| 2140 if (value_is_positive) { | |
| 2141 julong n; | |
| 2142 bool good_return = atomull(value, &n); | |
| 2143 if (good_return) { | |
| 2144 bool above_minimum = n >= min_size; | |
| 2145 bool value_is_too_large = n > max_uintx; | |
| 2146 | |
| 2147 if (above_minimum && !value_is_too_large) { | |
| 2148 *uintx_arg = n; | |
| 2149 return true; | |
| 2150 } | |
| 2151 } | |
| 2152 } | |
| 2153 return false; | |
| 2154 } | |
| 2155 | |
| 0 | 2156 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
|
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2157 julong* long_arg, |
|
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|
2158 julong min_size) { |
|
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2159 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 2160 return check_memory_size(*long_arg, min_size); |
| 2161 } | |
| 2162 | |
| 2163 // Parse JavaVMInitArgs structure | |
| 2164 | |
| 2165 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 2166 // For components of the system classpath. | |
| 2167 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 2168 bool scp_assembly_required = false; | |
| 2169 | |
| 2170 // Save default settings for some mode flags | |
| 2171 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 2172 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 2173 Arguments::_ClipInlining = ClipInlining; | |
| 2174 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 2175 | |
|
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2176 // Setup flags for mixed which is the default |
|
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2177 set_mode_flags(_mixed); |
|
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2178 |
| 0 | 2179 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
| 2180 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 2181 if (result != JNI_OK) { | |
| 2182 return result; | |
| 2183 } | |
| 2184 | |
| 2185 // Parse JavaVMInitArgs structure passed in | |
| 2186 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 2187 if (result != JNI_OK) { | |
| 2188 return result; | |
| 2189 } | |
| 2190 | |
|
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2191 if (AggressiveOpts) { |
|
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2192 // Insert alt-rt.jar between user-specified bootclasspath |
|
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2193 // prefix and the default bootclasspath. os::set_boot_path() |
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2194 // uses meta_index_dir as the default bootclasspath directory. |
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2195 const char* altclasses_jar = "alt-rt.jar"; |
|
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2196 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
|
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|
2197 strlen(altclasses_jar); |
| 6197 | 2198 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len, mtInternal); |
|
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2199 strcpy(altclasses_path, get_meta_index_dir()); |
|
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2200 strcat(altclasses_path, altclasses_jar); |
|
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2201 scp.add_suffix_to_prefix(altclasses_path); |
|
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2202 scp_assembly_required = true; |
| 6197 | 2203 FREE_C_HEAP_ARRAY(char, altclasses_path, mtInternal); |
|
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2204 } |
|
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2205 |
| 0 | 2206 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 2207 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 2208 if (result != JNI_OK) { | |
| 2209 return result; | |
| 2210 } | |
| 2211 | |
| 2212 // Do final processing now that all arguments have been parsed | |
| 2213 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 2214 if (result != JNI_OK) { | |
| 2215 return result; | |
| 2216 } | |
| 2217 | |
| 2218 return JNI_OK; | |
| 2219 } | |
| 2220 | |
| 2221 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 2222 SysClassPath* scp_p, | |
| 2223 bool* scp_assembly_required_p, | |
| 2224 FlagValueOrigin origin) { | |
| 2225 // Remaining part of option string | |
| 2226 const char* tail; | |
| 2227 | |
| 2228 // iterate over arguments | |
| 2229 for (int index = 0; index < args->nOptions; index++) { | |
| 2230 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 2231 | |
| 2232 const JavaVMOption* option = args->options + index; | |
| 2233 | |
| 2234 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 2235 !match_option(option, "-Dsun.java.command", &tail) && | |
| 2236 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 2237 | |
| 2238 // add all jvm options to the jvm_args string. This string | |
| 2239 // is used later to set the java.vm.args PerfData string constant. | |
| 2240 // the -Djava.class.path and the -Dsun.java.command options are | |
| 2241 // omitted from jvm_args string as each have their own PerfData | |
| 2242 // string constant object. | |
| 2243 build_jvm_args(option->optionString); | |
| 2244 } | |
| 2245 | |
| 2246 // -verbose:[class/gc/jni] | |
| 2247 if (match_option(option, "-verbose", &tail)) { | |
| 2248 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 2249 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 2250 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2251 } else if (!strcmp(tail, ":gc")) { | |
| 2252 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2253 } else if (!strcmp(tail, ":jni")) { | |
| 2254 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 2255 } | |
| 2256 // -da / -ea / -disableassertions / -enableassertions | |
| 2257 // These accept an optional class/package name separated by a colon, e.g., | |
| 2258 // -da:java.lang.Thread. | |
| 2259 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 2260 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2261 if (*tail == '\0') { | |
| 2262 JavaAssertions::setUserClassDefault(enable); | |
| 2263 } else { | |
| 2264 assert(*tail == ':', "bogus match by match_option()"); | |
| 2265 JavaAssertions::addOption(tail + 1, enable); | |
| 2266 } | |
| 2267 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 2268 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 2269 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2270 JavaAssertions::setSystemClassDefault(enable); | |
| 2271 // -bootclasspath: | |
| 2272 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 2273 scp_p->reset_path(tail); | |
| 2274 *scp_assembly_required_p = true; | |
| 2275 // -bootclasspath/a: | |
| 2276 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 2277 scp_p->add_suffix(tail); | |
| 2278 *scp_assembly_required_p = true; | |
| 2279 // -bootclasspath/p: | |
| 2280 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 2281 scp_p->add_prefix(tail); | |
| 2282 *scp_assembly_required_p = true; | |
| 2283 // -Xrun | |
| 2284 } else if (match_option(option, "-Xrun", &tail)) { | |
|
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2285 if (tail != NULL) { |
| 0 | 2286 const char* pos = strchr(tail, ':'); |
| 2287 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 6197 | 2288 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
| 0 | 2289 name[len] = '\0'; |
| 2290 | |
| 2291 char *options = NULL; | |
| 2292 if(pos != NULL) { | |
| 2293 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 6197 | 2294 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); |
| 0 | 2295 } |
|
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2296 #if !INCLUDE_JVMTI |
| 0 | 2297 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
|
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2298 jio_fprintf(defaultStream::error_stream(), |
|
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|
2299 "Profiling and debugging agents are not supported in this VM\n"); |
|
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|
2300 return JNI_ERR; |
|
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|
2301 } |
|
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|
2302 #endif // !INCLUDE_JVMTI |
|
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|
2303 add_init_library(name, options); |
| 0 | 2304 } |
| 2305 // -agentlib and -agentpath | |
| 2306 } else if (match_option(option, "-agentlib:", &tail) || | |
| 2307 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 2308 if(tail != NULL) { | |
| 2309 const char* pos = strchr(tail, '='); | |
| 2310 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 6197 | 2311 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
| 0 | 2312 name[len] = '\0'; |
| 2313 | |
| 2314 char *options = NULL; | |
| 2315 if(pos != NULL) { | |
| 6197 | 2316 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); |
| 0 | 2317 } |
|
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2318 #if !INCLUDE_JVMTI |
| 0 | 2319 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
|
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2320 jio_fprintf(defaultStream::error_stream(), |
|
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|
2321 "Profiling and debugging agents are not supported in this VM\n"); |
|
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|
2322 return JNI_ERR; |
|
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|
2323 } |
|
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2324 #endif // !INCLUDE_JVMTI |
| 0 | 2325 add_init_agent(name, options, is_absolute_path); |
| 2326 } | |
| 2327 // -javaagent | |
| 2328 } else if (match_option(option, "-javaagent:", &tail)) { | |
|
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2329 #if !INCLUDE_JVMTI |
|
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2330 jio_fprintf(defaultStream::error_stream(), |
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|
2331 "Instrumentation agents are not supported in this VM\n"); |
|
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2332 return JNI_ERR; |
|
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2333 #else |
| 0 | 2334 if(tail != NULL) { |
| 6197 | 2335 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); |
| 0 | 2336 add_init_agent("instrument", options, false); |
| 2337 } | |
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2338 #endif // !INCLUDE_JVMTI |
| 0 | 2339 // -Xnoclassgc |
| 2340 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 2341 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 2342 // -Xincgc: i-CMS | |
| 2343 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 2344 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2345 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 2346 // -Xnoincgc: no i-CMS | |
| 2347 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 2348 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2349 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 2350 // -Xconcgc | |
| 2351 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 2352 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2353 // -Xnoconcgc | |
| 2354 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 2355 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2356 // -Xbatch | |
| 2357 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 2358 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2359 // -Xmn for compatibility with other JVM vendors | |
| 2360 } else if (match_option(option, "-Xmn", &tail)) { | |
|
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2361 julong long_initial_eden_size = 0; |
| 0 | 2362 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 2363 if (errcode != arg_in_range) { | |
| 2364 jio_fprintf(defaultStream::error_stream(), | |
| 2365 "Invalid initial eden size: %s\n", option->optionString); | |
| 2366 describe_range_error(errcode); | |
| 2367 return JNI_EINVAL; | |
| 2368 } | |
| 1064 | 2369 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
| 2370 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
| 0 | 2371 // -Xms |
| 2372 } else if (match_option(option, "-Xms", &tail)) { | |
|
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|
2373 julong long_initial_heap_size = 0; |
| 0 | 2374 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 2375 if (errcode != arg_in_range) { | |
| 2376 jio_fprintf(defaultStream::error_stream(), | |
| 2377 "Invalid initial heap size: %s\n", option->optionString); | |
| 2378 describe_range_error(errcode); | |
| 2379 return JNI_EINVAL; | |
| 2380 } | |
| 1064 | 2381 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
| 0 | 2382 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2383 set_min_heap_size(InitialHeapSize); |
| 0 | 2384 // -Xmx |
| 2385 } else if (match_option(option, "-Xmx", &tail)) { | |
|
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|
2386 julong long_max_heap_size = 0; |
| 0 | 2387 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 2388 if (errcode != arg_in_range) { | |
| 2389 jio_fprintf(defaultStream::error_stream(), | |
| 2390 "Invalid maximum heap size: %s\n", option->optionString); | |
| 2391 describe_range_error(errcode); | |
| 2392 return JNI_EINVAL; | |
| 2393 } | |
| 1064 | 2394 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
| 0 | 2395 // Xmaxf |
| 2396 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 2397 int maxf = (int)(atof(tail) * 100); | |
| 2398 if (maxf < 0 || maxf > 100) { | |
| 2399 jio_fprintf(defaultStream::error_stream(), | |
| 2400 "Bad max heap free percentage size: %s\n", | |
| 2401 option->optionString); | |
| 2402 return JNI_EINVAL; | |
| 2403 } else { | |
| 2404 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 2405 } | |
| 2406 // Xminf | |
| 2407 } else if (match_option(option, "-Xminf", &tail)) { | |
| 2408 int minf = (int)(atof(tail) * 100); | |
| 2409 if (minf < 0 || minf > 100) { | |
| 2410 jio_fprintf(defaultStream::error_stream(), | |
| 2411 "Bad min heap free percentage size: %s\n", | |
| 2412 option->optionString); | |
| 2413 return JNI_EINVAL; | |
| 2414 } else { | |
| 2415 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 2416 } | |
| 2417 // -Xss | |
| 2418 } else if (match_option(option, "-Xss", &tail)) { | |
|
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|
2419 julong long_ThreadStackSize = 0; |
| 0 | 2420 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 2421 if (errcode != arg_in_range) { | |
| 2422 jio_fprintf(defaultStream::error_stream(), | |
| 2423 "Invalid thread stack size: %s\n", option->optionString); | |
| 2424 describe_range_error(errcode); | |
| 2425 return JNI_EINVAL; | |
| 2426 } | |
| 2427 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 2428 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 2429 round_to((int)long_ThreadStackSize, K) / K); | |
| 2430 // -Xoss | |
| 2431 } else if (match_option(option, "-Xoss", &tail)) { | |
| 2432 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 2433 // -Xmaxjitcodesize | |
|
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|
2434 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
|
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|
2435 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
|
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|
2436 julong long_ReservedCodeCacheSize = 0; |
| 0 | 2437 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
|
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|
2438 (size_t)InitialCodeCacheSize); |
| 0 | 2439 if (errcode != arg_in_range) { |
| 2440 jio_fprintf(defaultStream::error_stream(), | |
|
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|
2441 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
|
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|
2442 option->optionString, InitialCodeCacheSize/K); |
| 0 | 2443 describe_range_error(errcode); |
| 2444 return JNI_EINVAL; | |
| 2445 } | |
| 2446 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 2447 // -green | |
| 2448 } else if (match_option(option, "-green", &tail)) { | |
| 2449 jio_fprintf(defaultStream::error_stream(), | |
| 2450 "Green threads support not available\n"); | |
| 2451 return JNI_EINVAL; | |
| 2452 // -native | |
| 2453 } else if (match_option(option, "-native", &tail)) { | |
| 2454 // HotSpot always uses native threads, ignore silently for compatibility | |
| 2455 // -Xsqnopause | |
| 2456 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 2457 // EVM option, ignore silently for compatibility | |
| 2458 // -Xrs | |
| 2459 } else if (match_option(option, "-Xrs", &tail)) { | |
| 2460 // Classic/EVM option, new functionality | |
| 2461 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 2462 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 2463 // change default internal VM signals used - lower case for back compat | |
| 2464 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 2465 // -Xoptimize | |
| 2466 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 2467 // EVM option, ignore silently for compatibility | |
| 2468 // -Xprof | |
| 2469 } else if (match_option(option, "-Xprof", &tail)) { | |
|
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|
2470 #if INCLUDE_FPROF |
| 0 | 2471 _has_profile = true; |
|
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2472 #else // INCLUDE_FPROF |
|
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|
2473 jio_fprintf(defaultStream::error_stream(), |
|
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|
2474 "Flat profiling is not supported in this VM.\n"); |
|
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|
2475 return JNI_ERR; |
|
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|
2476 #endif // INCLUDE_FPROF |
| 0 | 2477 // -Xaprof |
| 2478 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2479 _has_alloc_profile = true; | |
| 2480 // -Xconcurrentio | |
| 2481 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2482 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2483 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2484 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2485 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2486 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2487 | |
| 2488 // -Xinternalversion | |
| 2489 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2490 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2491 VM_Version::internal_vm_info_string()); | |
| 2492 vm_exit(0); | |
| 2493 #ifndef PRODUCT | |
| 2494 // -Xprintflags | |
| 2495 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 4773 | 2496 CommandLineFlags::printFlags(tty, false); |
| 0 | 2497 vm_exit(0); |
| 2498 #endif | |
| 2499 // -D | |
| 2500 } else if (match_option(option, "-D", &tail)) { | |
| 2501 if (!add_property(tail)) { | |
| 2502 return JNI_ENOMEM; | |
| 2503 } | |
| 2504 // Out of the box management support | |
| 2505 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
|
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|
2506 #if INCLUDE_MANAGEMENT |
| 0 | 2507 FLAG_SET_CMDLINE(bool, ManagementServer, true); |
|
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|
2508 #else |
|
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|
2509 jio_fprintf(defaultStream::output_stream(), |
|
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diff
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|
2510 "-Dcom.sun.management is not supported in this VM.\n"); |
|
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|
2511 return JNI_ERR; |
|
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|
2512 #endif |
| 0 | 2513 } |
| 2514 // -Xint | |
| 2515 } else if (match_option(option, "-Xint", &tail)) { | |
| 2516 set_mode_flags(_int); | |
| 2517 // -Xmixed | |
| 2518 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2519 set_mode_flags(_mixed); | |
| 2520 // -Xcomp | |
| 2521 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2522 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2523 set_mode_flags(_comp); | |
| 2524 // -Xshare:dump | |
| 2525 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2526 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2527 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2528 // -Xshare:on | |
| 2529 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2530 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2531 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2532 // -Xshare:auto | |
| 2533 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2534 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2535 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2536 // -Xshare:off | |
| 2537 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2538 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2539 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2540 // -Xverify | |
| 2541 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2542 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2543 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2544 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2545 } else if (strcmp(tail, ":remote") == 0) { | |
| 2546 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2547 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2548 } else if (strcmp(tail, ":none") == 0) { | |
| 2549 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2550 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2551 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2552 return JNI_EINVAL; | |
| 2553 } | |
| 2554 // -Xdebug | |
| 2555 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2556 // note this flag has been used, then ignore | |
| 2557 set_xdebug_mode(true); | |
| 2558 // -Xnoagent | |
| 2559 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2560 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2561 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2562 // Bind user level threads to kernel threads (Solaris only) | |
| 2563 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2564 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2565 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2566 // ostream_init_log(), when called will use this filename | |
| 2567 // to initialize a fileStream. | |
| 2568 _gc_log_filename = strdup(tail); | |
| 2569 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2570 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2571 | |
| 2572 // JNI hooks | |
| 2573 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2574 if (!strcmp(tail, ":jni")) { | |
|
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|
2575 #if !INCLUDE_JNI_CHECK |
|
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|
2576 warning("JNI CHECKING is not supported in this VM"); |
|
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|
2577 #else |
| 0 | 2578 CheckJNICalls = true; |
|
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|
2579 #endif // INCLUDE_JNI_CHECK |
| 0 | 2580 } else if (is_bad_option(option, args->ignoreUnrecognized, |
| 2581 "check")) { | |
| 2582 return JNI_EINVAL; | |
| 2583 } | |
| 2584 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2585 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2586 } else if (match_option(option, "exit", &tail)) { | |
| 2587 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2588 } else if (match_option(option, "abort", &tail)) { | |
| 2589 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2590 // -XX:+AggressiveHeap | |
| 2591 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2592 | |
| 2593 // This option inspects the machine and attempts to set various | |
| 2594 // parameters to be optimal for long-running, memory allocation | |
| 2595 // intensive jobs. It is intended for machines with large | |
| 2596 // amounts of cpu and memory. | |
| 2597 | |
| 2598 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2599 // VM, but we may not be able to represent the total physical memory | |
| 2600 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2601 // Thus, we need to make sure we're using a julong for intermediate | |
| 2602 // calculations. | |
| 2603 julong initHeapSize; | |
| 2604 julong total_memory = os::physical_memory(); | |
| 2605 | |
| 2606 if (total_memory < (julong)256*M) { | |
| 2607 jio_fprintf(defaultStream::error_stream(), | |
| 2608 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2609 vm_exit(1); | |
| 2610 } | |
| 2611 | |
| 2612 // The heap size is half of available memory, or (at most) | |
| 2613 // all of possible memory less 160mb (leaving room for the OS | |
| 2614 // when using ISM). This is the maximum; because adaptive sizing | |
| 2615 // is turned on below, the actual space used may be smaller. | |
| 2616 | |
| 2617 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2618 total_memory - (julong)160*M); | |
| 2619 | |
|
8854
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|
2620 initHeapSize = limit_by_allocatable_memory(initHeapSize); |
| 0 | 2621 |
| 2622 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2623 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 1064 | 2624 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
| 0 | 2625 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2626 set_min_heap_size(initHeapSize); |
| 0 | 2627 } |
| 2628 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2629 // Make the young generation 3/8ths of the total heap. | |
| 2630 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2631 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2632 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2633 } | |
| 2634 | |
|
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6916
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|
2635 #ifndef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
| 0 | 2636 FLAG_SET_DEFAULT(UseLargePages, true); |
|
6917
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|
2637 #endif |
| 0 | 2638 |
| 2639 // Increase some data structure sizes for efficiency | |
| 2640 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2641 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2642 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2643 | |
| 2644 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2645 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2646 // space per-gc-thread buffers. The default is 4kw. | |
| 2647 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2648 | |
| 2649 // OldPLABSize is the size of the buffers in the old gen that | |
| 2650 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2651 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2652 // The default size is 1kw. These buffers are rarely used, since the | |
| 2653 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2654 // are occasions when there's lots of live data in the young gen | |
| 2655 // and we end up promoting some of it. We don't have a definite | |
| 2656 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2657 // is that a bigger PLAB results in retaining something like the | |
| 2658 // original allocation order after promotion, which improves mutator | |
| 2659 // locality. A minor effect may be that larger PLABs reduce the | |
| 2660 // number of PLAB allocation events during gc. The value of 8kw | |
| 2661 // was arrived at by experimenting with specjbb. | |
| 2662 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2663 | |
| 2664 // Enable parallel GC and adaptive generation sizing | |
| 2665 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
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|
2666 FLAG_SET_DEFAULT(ParallelGCThreads, |
|
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|
2667 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2668 |
| 2669 // Encourage steady state memory management | |
| 2670 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2671 | |
| 2672 // This appears to improve mutator locality | |
| 2673 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2674 | |
| 2675 // Get around early Solaris scheduling bug | |
| 2676 // (affinity vs other jobs on system) | |
| 2677 // but disallow DR and offlining (5008695). | |
| 2678 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2679 | |
| 2680 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2681 // The last option must always win. | |
| 2682 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2683 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2684 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2685 // The last option must always win. | |
| 2686 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2687 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2688 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2689 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2690 jio_fprintf(defaultStream::error_stream(), | |
| 2691 "Please use CMSClassUnloadingEnabled in place of " | |
| 2692 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2693 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2694 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2695 jio_fprintf(defaultStream::error_stream(), | |
| 2696 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2697 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2698 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2699 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2700 jio_fprintf(defaultStream::error_stream(), | |
| 2701 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2702 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2703 // The TLE options are for compatibility with 1.3 and will be | |
| 2704 // removed without notice in a future release. These options | |
| 2705 // are not to be documented. | |
| 2706 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2707 // No longer used. | |
| 2708 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2709 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2710 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2711 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2712 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2713 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2714 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2715 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2716 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2717 // No longer used. | |
| 2718 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
489
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diff
changeset
|
2719 julong long_tlab_size = 0; |
| 0 | 2720 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2721 if (errcode != arg_in_range) { | |
| 2722 jio_fprintf(defaultStream::error_stream(), | |
| 2723 "Invalid TLAB size: %s\n", option->optionString); | |
| 2724 describe_range_error(errcode); | |
| 2725 return JNI_EINVAL; | |
| 2726 } | |
| 2727 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2728 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2729 // No longer used. | |
| 2730 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2731 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2732 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2733 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2734 SOLARIS_ONLY( | |
| 2735 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2736 warning("-XX:+UsePermISM is obsolete."); | |
| 2737 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2738 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2739 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2740 ) | |
| 2741 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2742 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2743 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2744 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2745 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2746 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2747 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 4006 | 2748 #if defined(DTRACE_ENABLED) |
| 0 | 2749 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
| 2750 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2751 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2752 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 4006 | 2753 #else // defined(DTRACE_ENABLED) |
| 0 | 2754 jio_fprintf(defaultStream::error_stream(), |
| 4006 | 2755 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
| 0 | 2756 return JNI_EINVAL; |
| 4006 | 2757 #endif // defined(DTRACE_ENABLED) |
| 0 | 2758 #ifdef ASSERT |
|
1145
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6631166: CMS: better heuristics when combatting fragmentation
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parents:
1074
diff
changeset
|
2759 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
| 0 | 2760 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
| 2761 // disable scavenge before parallel mark-compact | |
| 2762 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2763 #endif | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2764 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
| 0 | 2765 julong cms_blocks_to_claim = (julong)atol(tail); |
| 2766 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2767 jio_fprintf(defaultStream::error_stream(), | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2768 "Please use -XX:OldPLABSize in place of " |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2769 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2770 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2771 julong cms_blocks_to_claim = (julong)atol(tail); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2772 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2773 jio_fprintf(defaultStream::error_stream(), |
|
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2774 "Please use -XX:OldPLABSize in place of " |
| 0 | 2775 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2776 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
|
489
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6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2777 julong old_plab_size = 0; |
| 0 | 2778 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2779 if (errcode != arg_in_range) { | |
| 2780 jio_fprintf(defaultStream::error_stream(), | |
| 2781 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2782 describe_range_error(errcode); | |
| 2783 return JNI_EINVAL; | |
| 2784 } | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2785 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2786 jio_fprintf(defaultStream::error_stream(), |
| 2787 "Please use -XX:OldPLABSize in place of " | |
| 2788 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2789 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2790 julong young_plab_size = 0; |
| 0 | 2791 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2792 if (errcode != arg_in_range) { | |
| 2793 jio_fprintf(defaultStream::error_stream(), | |
| 2794 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2795 describe_range_error(errcode); | |
| 2796 return JNI_EINVAL; | |
| 2797 } | |
|
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2798 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2799 jio_fprintf(defaultStream::error_stream(), |
| 2800 "Please use -XX:YoungPLABSize in place of " | |
| 2801 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 1284 | 2802 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
| 2803 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
| 2804 julong stack_size = 0; | |
| 2805 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
| 2806 if (errcode != arg_in_range) { | |
| 2807 jio_fprintf(defaultStream::error_stream(), | |
| 2808 "Invalid mark stack size: %s\n", option->optionString); | |
| 2809 describe_range_error(errcode); | |
| 2810 return JNI_EINVAL; | |
| 2811 } | |
| 2812 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
| 2813 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
| 2814 julong max_stack_size = 0; | |
| 2815 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
| 2816 if (errcode != arg_in_range) { | |
| 2817 jio_fprintf(defaultStream::error_stream(), | |
| 2818 "Invalid maximum mark stack size: %s\n", | |
| 2819 option->optionString); | |
| 2820 describe_range_error(errcode); | |
| 2821 return JNI_EINVAL; | |
| 2822 } | |
| 2823 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
| 2824 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
| 2825 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
| 2826 uintx conc_threads = 0; | |
| 2827 if (!parse_uintx(tail, &conc_threads, 1)) { | |
| 2828 jio_fprintf(defaultStream::error_stream(), | |
| 2829 "Invalid concurrent threads: %s\n", option->optionString); | |
| 2830 return JNI_EINVAL; | |
| 2831 } | |
| 2832 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
|
6199
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2833 } else if (match_option(option, "-XX:MaxDirectMemorySize=", &tail)) { |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2834 julong max_direct_memory_size = 0; |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2835 ArgsRange errcode = parse_memory_size(tail, &max_direct_memory_size, 0); |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2836 if (errcode != arg_in_range) { |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2837 jio_fprintf(defaultStream::error_stream(), |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2838 "Invalid maximum direct memory size: %s\n", |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2839 option->optionString); |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2840 describe_range_error(errcode); |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2841 return JNI_EINVAL; |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2842 } |
|
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2843 FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); |
|
6878
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2844 } else if (match_option(option, "-XX:+UseVMInterruptibleIO", &tail)) { |
|
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2845 // NOTE! In JDK 9, the UseVMInterruptibleIO flag will completely go |
|
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2846 // away and will cause VM initialization failures! |
|
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2847 warning("-XX:+UseVMInterruptibleIO is obsolete and will be removed in a future release."); |
|
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
coleenp
parents:
6857
diff
changeset
|
2848 FLAG_SET_CMDLINE(bool, UseVMInterruptibleIO, true); |
|
8081
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2849 #if !INCLUDE_MANAGEMENT |
|
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2850 } else if (match_option(option, "-XX:+ManagementServer", &tail)) { |
|
8720
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
2851 jio_fprintf(defaultStream::error_stream(), |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
2852 "ManagementServer is not supported in this VM.\n"); |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
2853 return JNI_ERR; |
|
8081
579f6adb7f51
8003539: Minimal VM don't react to -Dcom.sun.management and -XX:+ManagementServer
jprovino
parents:
8002
diff
changeset
|
2854 #endif // INCLUDE_MANAGEMENT |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
2855 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
| 0 | 2856 // Skip -XX:Flags= since that case has already been handled |
| 2857 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2858 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2859 return JNI_EINVAL; | |
| 2860 } | |
| 2861 } | |
| 2862 // Unknown option | |
| 2863 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2864 return JNI_ERR; | |
| 2865 } | |
| 2866 } | |
|
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3349
diff
changeset
|
2867 |
|
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
420
diff
changeset
|
2868 // 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
|
2869 // when working with older JDKs. |
|
1679
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2870 #ifdef LINUX |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2871 if (JDK_Version::current().compare_major(6) <= 0 && |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2872 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2873 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2874 } |
|
3d90023429ec
6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
aph
parents:
1628
diff
changeset
|
2875 #endif // LINUX |
| 0 | 2876 return JNI_OK; |
| 2877 } | |
| 2878 | |
| 2879 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2880 // This must be done after all -D arguments have been processed. | |
| 2881 scp_p->expand_endorsed(); | |
| 2882 | |
| 2883 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2884 // Assemble the bootclasspath elements into the final path. | |
| 2885 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2886 } | |
| 2887 | |
| 2888 // This must be done after all arguments have been processed. | |
| 2889 // java_compiler() true means set to "NONE" or empty. | |
| 2890 if (java_compiler() && !xdebug_mode()) { | |
| 2891 // For backwards compatibility, we switch to interpreted mode if | |
| 2892 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2893 // not specified. | |
| 2894 set_mode_flags(_int); | |
| 2895 } | |
| 2896 if (CompileThreshold == 0) { | |
| 2897 set_mode_flags(_int); | |
| 2898 } | |
| 2899 | |
| 2900 #ifndef COMPILER2 | |
| 2901 // Don't degrade server performance for footprint | |
| 2902 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2903 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2904 // No need for large granularity pages w/small heaps. | |
| 2905 // Note that large pages are enabled/disabled for both the | |
| 2906 // Java heap and the code cache. | |
| 2907 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2908 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2909 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2910 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2911 |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2912 // Tiered compilation is undefined with C1. |
|
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2913 TieredCompilation = false; |
| 0 | 2914 #else |
| 2915 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2916 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2917 } | |
| 2918 #endif | |
| 2919 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2920 // 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
|
2921 // to be true unless the property has already been set. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2922 // 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
|
2923 if (os::is_headless_jre()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2924 const char* headless = Arguments::get_property("java.awt.headless"); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2925 if (headless == NULL) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2926 char envbuffer[128]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2927 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2928 if (!add_property("java.awt.headless=true")) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2929 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2930 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2931 } else { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2932 char buffer[256]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2933 strcpy(buffer, "java.awt.headless="); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2934 strcat(buffer, envbuffer); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2935 if (!add_property(buffer)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2936 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2937 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2938 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2939 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2940 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2941 |
| 0 | 2942 if (!check_vm_args_consistency()) { |
| 2943 return JNI_ERR; | |
| 2944 } | |
| 2945 | |
| 2946 return JNI_OK; | |
| 2947 } | |
| 2948 | |
| 2949 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2950 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2951 scp_assembly_required_p); | |
| 2952 } | |
| 2953 | |
| 2954 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2955 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2956 scp_assembly_required_p); | |
| 2957 } | |
| 2958 | |
| 2959 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2960 const int N_MAX_OPTIONS = 64; | |
| 2961 const int OPTION_BUFFER_SIZE = 1024; | |
| 2962 char buffer[OPTION_BUFFER_SIZE]; | |
| 2963 | |
| 2964 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2965 // Don't check this variable if user has special privileges | |
| 2966 // (e.g. unix su command). | |
| 2967 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2968 !os::have_special_privileges()) { | |
| 2969 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2970 jio_fprintf(defaultStream::error_stream(), | |
| 2971 "Picked up %s: %s\n", name, buffer); | |
| 2972 char* rd = buffer; // pointer to the input string (rd) | |
| 2973 int i; | |
| 2974 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2975 while (isspace(*rd)) rd++; // skip whitespace | |
| 2976 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2977 | |
| 2978 // The output, option string, overwrites the input string. | |
| 2979 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2980 // input string (rd). | |
| 2981 char* wrt = rd; | |
| 2982 | |
| 2983 options[i++].optionString = wrt; // Fill in option | |
| 2984 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2985 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2986 int quote = *rd; // matching quote to look for | |
| 2987 rd++; // don't copy open quote | |
| 2988 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2989 if (*rd == 0) { // string termination means unmatched string | |
| 2990 jio_fprintf(defaultStream::error_stream(), | |
| 2991 "Unmatched quote in %s\n", name); | |
| 2992 return JNI_ERR; | |
| 2993 } | |
| 2994 *wrt++ = *rd++; // copy to option string | |
| 2995 } | |
| 2996 rd++; // don't copy close quote | |
| 2997 } else { | |
| 2998 *wrt++ = *rd++; // copy to option string | |
| 2999 } | |
| 3000 } | |
| 3001 // Need to check if we're done before writing a NULL, | |
| 3002 // because the write could be to the byte that rd is pointing to. | |
| 3003 if (*rd++ == 0) { | |
| 3004 *wrt = 0; | |
| 3005 break; | |
| 3006 } | |
| 3007 *wrt = 0; // Zero terminate option | |
| 3008 } | |
| 3009 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 3010 JavaVMInitArgs vm_args; | |
| 3011 vm_args.version = JNI_VERSION_1_2; | |
| 3012 vm_args.options = options; | |
| 3013 vm_args.nOptions = i; | |
| 564 | 3014 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 3015 |
| 3016 if (PrintVMOptions) { | |
| 3017 const char* tail; | |
| 3018 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 3019 const JavaVMOption *option = vm_args.options + i; | |
| 3020 if (match_option(option, "-XX:", &tail)) { | |
| 3021 logOption(tail); | |
| 3022 } | |
| 3023 } | |
| 3024 } | |
| 3025 | |
| 3026 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 3027 } | |
| 3028 return JNI_OK; | |
| 3029 } | |
| 3030 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3031 void Arguments::set_shared_spaces_flags() { |
| 2378 | 3032 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
| 3033 const bool might_share = must_share || UseSharedSpaces; | |
| 3034 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3035 // CompressedOops cannot be used with CDS. The offsets of oopmaps and |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3036 // static fields are incorrect in the archive. With some more clever |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3037 // initialization, this restriction can probably be lifted. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3038 // ??? UseLargePages might be okay now |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3039 const bool cannot_share = UseCompressedOops || |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3040 (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3041 if (cannot_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3042 if (must_share) { |
|
6736
11fb740ce98f
7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
coleenp
parents:
6725
diff
changeset
|
3043 warning("disabling large pages %s" |
| 2378 | 3044 "because of %s", "" LP64_ONLY("and compressed oops "), |
| 3045 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
| 3046 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
| 3047 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3048 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3049 } else { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3050 // Prefer compressed oops and large pages to class data sharing |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3051 if (UseSharedSpaces && Verbose) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3052 warning("turning off use of shared archive because of large pages%s", |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3053 "" LP64_ONLY(" and/or compressed oops")); |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3054 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3055 no_shared_spaces(); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3056 } |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3057 } else if (UseLargePages && might_share) { |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3058 // Disable large pages to allow shared spaces. This is sub-optimal, since |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3059 // there may not even be a shared archive to use. |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3060 FLAG_SET_DEFAULT(UseLargePages, false); |
|
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3061 } |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3062 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3063 if (DumpSharedSpaces) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3064 if (RequireSharedSpaces) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3065 warning("cannot dump shared archive while using shared archive"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3066 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3067 UseSharedSpaces = false; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3068 } |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3069 } |
|
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
3070 |
|
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3071 // Disable options not supported in this release, with a warning if they |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3072 // were explicitly requested on the command-line |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3073 #define UNSUPPORTED_OPTION(opt, description) \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3074 do { \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3075 if (opt) { \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3076 if (FLAG_IS_CMDLINE(opt)) { \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3077 warning(description " is disabled in this release."); \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3078 } \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3079 FLAG_SET_DEFAULT(opt, false); \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3080 } \ |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3081 } while(0) |
|
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3082 |
|
8086
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3083 |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3084 #define UNSUPPORTED_GC_OPTION(gc) \ |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3085 do { \ |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3086 if (gc) { \ |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3087 if (FLAG_IS_CMDLINE(gc)) { \ |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3088 warning(#gc " is not supported in this VM. Using Serial GC."); \ |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3089 } \ |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3090 FLAG_SET_DEFAULT(gc, false); \ |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3091 } \ |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3092 } while(0) |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3093 |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3094 static void force_serial_gc() { |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3095 FLAG_SET_DEFAULT(UseSerialGC, true); |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3096 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3097 UNSUPPORTED_GC_OPTION(UseG1GC); |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3098 UNSUPPORTED_GC_OPTION(UseParallelGC); |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3099 UNSUPPORTED_GC_OPTION(UseParallelOldGC); |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3100 UNSUPPORTED_GC_OPTION(UseConcMarkSweepGC); |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3101 UNSUPPORTED_GC_OPTION(UseParNewGC); |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3102 } |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3103 |
| 0 | 3104 // Parse entry point called from JNI_CreateJavaVM |
| 3105 | |
| 3106 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 3107 | |
| 3108 // Sharing support | |
| 3109 // Construct the path to the archive | |
| 3110 char jvm_path[JVM_MAXPATHLEN]; | |
| 3111 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 3112 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 3113 if (end != NULL) *end = '\0'; | |
| 3114 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 6197 | 3115 strlen(os::file_separator()) + 20, mtInternal); |
| 0 | 3116 if (shared_archive_path == NULL) return JNI_ENOMEM; |
| 3117 strcpy(shared_archive_path, jvm_path); | |
| 3118 strcat(shared_archive_path, os::file_separator()); | |
| 3119 strcat(shared_archive_path, "classes"); | |
| 3120 strcat(shared_archive_path, ".jsa"); | |
| 3121 SharedArchivePath = shared_archive_path; | |
| 3122 | |
| 3123 // Remaining part of option string | |
| 3124 const char* tail; | |
| 3125 | |
| 3126 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
|
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3127 const char* hotspotrc = ".hotspotrc"; |
| 0 | 3128 bool settings_file_specified = false; |
|
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3129 bool needs_hotspotrc_warning = false; |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3130 |
| 564 | 3131 const char* flags_file; |
| 0 | 3132 int index; |
| 3133 for (index = 0; index < args->nOptions; index++) { | |
| 3134 const JavaVMOption *option = args->options + index; | |
| 3135 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 3136 flags_file = tail; |
| 0 | 3137 settings_file_specified = true; |
| 3138 } | |
| 3139 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 3140 PrintVMOptions = true; | |
| 3141 } | |
|
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3142 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
|
3143 PrintVMOptions = false; |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3144 } |
| 564 | 3145 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 3146 IgnoreUnrecognizedVMOptions = true; | |
| 3147 } | |
| 3148 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 3149 IgnoreUnrecognizedVMOptions = false; | |
| 3150 } | |
| 1150 | 3151 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
| 4773 | 3152 CommandLineFlags::printFlags(tty, false); |
| 1150 | 3153 vm_exit(0); |
| 3154 } | |
| 6197 | 3155 if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3156 #if INCLUDE_NMT |
| 6197 | 3157 MemTracker::init_tracking_options(tail); |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3158 #else |
|
8720
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3159 jio_fprintf(defaultStream::error_stream(), |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3160 "Native Memory Tracking is not supported in this VM\n"); |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3161 return JNI_ERR; |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3162 #endif |
| 6197 | 3163 } |
| 3164 | |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3165 |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3166 #ifndef PRODUCT |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3167 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
| 4773 | 3168 CommandLineFlags::printFlags(tty, true); |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3169 vm_exit(0); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3170 } |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3171 #endif |
| 564 | 3172 } |
| 3173 | |
| 3174 if (IgnoreUnrecognizedVMOptions) { | |
| 3175 // uncast const to modify the flag args->ignoreUnrecognized | |
| 3176 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 3177 } | |
| 3178 | |
| 3179 // Parse specified settings file | |
| 3180 if (settings_file_specified) { | |
| 3181 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 3182 return JNI_EINVAL; | |
| 3183 } | |
|
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3184 } else { |
|
6150
1e76463170b3
7110720: Issue with vm config file loadingIssue with vm config file loading
kamg
parents:
4780
diff
changeset
|
3185 #ifdef ASSERT |
|
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3186 // Parse default .hotspotrc settings file |
| 0 | 3187 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
| 3188 return JNI_EINVAL; | |
| 3189 } | |
|
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3190 #else |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3191 struct stat buf; |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3192 if (os::stat(hotspotrc, &buf) == 0) { |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3193 needs_hotspotrc_warning = true; |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3194 } |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3195 #endif |
| 0 | 3196 } |
| 3197 | |
| 3198 if (PrintVMOptions) { | |
| 3199 for (index = 0; index < args->nOptions; index++) { | |
| 3200 const JavaVMOption *option = args->options + index; | |
| 3201 if (match_option(option, "-XX:", &tail)) { | |
| 3202 logOption(tail); | |
| 3203 } | |
| 3204 } | |
| 3205 } | |
| 3206 | |
| 3207 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 3208 jint result = parse_vm_init_args(args); | |
| 3209 if (result != JNI_OK) { | |
| 3210 return result; | |
| 3211 } | |
| 3212 | |
|
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3213 // Delay warning until here so that we've had a chance to process |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3214 // the -XX:-PrintWarnings flag |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3215 if (needs_hotspotrc_warning) { |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3216 warning("%s file is present but has been ignored. " |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3217 "Run with -XX:Flags=%s to load the file.", |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3218 hotspotrc, hotspotrc); |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3219 } |
|
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3220 |
|
6917
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3221 #ifdef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
|
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3222 UNSUPPORTED_OPTION(UseLargePages, "-XX:+UseLargePages"); |
|
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3223 #endif |
|
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3224 |
|
8086
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3225 #if INCLUDE_ALL_GCS |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3226 #if (defined JAVASE_EMBEDDED || defined ARM) |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3227 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3228 #endif |
|
1605eef8e11e
8003581: UseG1GC is not properly accounted for by INCLUDE_ALTERNATE_GCS
jprovino
parents:
8083
diff
changeset
|
3229 #endif |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3230 |
| 0 | 3231 #ifndef PRODUCT |
| 3232 if (TraceBytecodesAt != 0) { | |
| 3233 TraceBytecodes = true; | |
| 3234 } | |
| 3235 if (CountCompiledCalls) { | |
| 3236 if (UseCounterDecay) { | |
| 3237 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 3238 UseCounterDecay = false; | |
| 3239 } | |
| 3240 } | |
| 3241 #endif // PRODUCT | |
| 3242 | |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3243 // JSR 292 is not supported before 1.7 |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3244 if (!JDK_Version::is_gte_jdk17x_version()) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3245 if (EnableInvokeDynamic) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3246 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3247 warning("JSR 292 is not supported before 1.7. Disabling support."); |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3248 } |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3249 EnableInvokeDynamic = false; |
| 710 | 3250 } |
| 3251 } | |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3252 |
|
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3253 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3254 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3255 warning("forcing ScavengeRootsInCode non-zero because EnableInvokeDynamic is true"); |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3256 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3257 ScavengeRootsInCode = 1; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3258 } |
| 710 | 3259 |
| 0 | 3260 if (PrintGCDetails) { |
| 3261 // Turn on -verbose:gc options as well | |
| 3262 PrintGC = true; | |
| 3263 } | |
| 3264 | |
|
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3265 if (!JDK_Version::is_gte_jdk18x_version()) { |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3266 // To avoid changing the log format for 7 updates this flag is only |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3267 // true by default in JDK8 and above. |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3268 if (FLAG_IS_DEFAULT(PrintGCCause)) { |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3269 FLAG_SET_DEFAULT(PrintGCCause, false); |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3270 } |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3271 } |
|
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3272 |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3273 // 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
|
3274 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
|
3275 |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3276 #if !INCLUDE_ALL_GCS |
| 1064 | 3277 force_serial_gc(); |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3278 #endif // INCLUDE_ALL_GCS |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3279 #if !INCLUDE_CDS |
|
8720
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3280 if (DumpSharedSpaces || RequireSharedSpaces) { |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3281 jio_fprintf(defaultStream::error_stream(), |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3282 "Shared spaces are not supported in this VM\n"); |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3283 return JNI_ERR; |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3284 } |
|
8724
69ffa4ac9e53
8009835: Only produce a warning when -Xshare:auto is explicitly requested
jprovino
parents:
8720
diff
changeset
|
3285 if ((UseSharedSpaces && FLAG_IS_CMDLINE(UseSharedSpaces)) || PrintSharedSpaces) { |
|
8720
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3286 warning("Shared spaces are not supported in this VM"); |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3287 FLAG_SET_DEFAULT(UseSharedSpaces, false); |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3288 FLAG_SET_DEFAULT(PrintSharedSpaces, false); |
|
fad90b102190
8008310: Some adjustments needed to minimal VM warnings and errors for unsupported command line options
jprovino
parents:
8105
diff
changeset
|
3289 } |
| 0 | 3290 no_shared_spaces(); |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3291 #endif // INCLUDE_CDS |
| 0 | 3292 |
| 3293 // Set flags based on ergonomics. | |
| 3294 set_ergonomics_flags(); | |
| 3295 | |
|
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3296 set_shared_spaces_flags(); |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3297 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3298 // Check the GC selections again. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3299 if (!check_gc_consistency()) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3300 return JNI_EINVAL; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3301 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3302 |
| 1783 | 3303 if (TieredCompilation) { |
| 3304 set_tiered_flags(); | |
| 3305 } else { | |
| 3306 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
| 3307 if (CompilationPolicyChoice >= 2) { | |
| 3308 vm_exit_during_initialization( | |
| 3309 "Incompatible compilation policy selected", NULL); | |
| 3310 } | |
| 3311 } | |
| 3312 | |
|
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3313 // Set heap size based on available physical memory |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3314 set_heap_size(); |
|
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3315 |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3316 #if INCLUDE_ALL_GCS |
|
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3317 // Set per-collector flags |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3318 if (UseParallelGC || UseParallelOldGC) { |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3319 set_parallel_gc_flags(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3320 } else if (UseConcMarkSweepGC) { // should be done before ParNew check below |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3321 set_cms_and_parnew_gc_flags(); |
|
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3322 } else if (UseParNewGC) { // skipped if CMS is set above |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3323 set_parnew_gc_flags(); |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3324 } else if (UseG1GC) { |
|
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3325 set_g1_gc_flags(); |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3326 } |
|
7452
e0ab18eafbde
8003820: Deprecate untested and rarely used GC combinations
brutisso
parents:
7451
diff
changeset
|
3327 check_deprecated_gcs(); |
| 8734 | 3328 check_deprecated_gc_flags(); |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3329 #else // INCLUDE_ALL_GCS |
| 0 | 3330 assert(verify_serial_gc_flags(), "SerialGC unset"); |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3331 #endif // INCLUDE_ALL_GCS |
| 0 | 3332 |
| 3333 // Set bytecode rewriting flags | |
| 3334 set_bytecode_flags(); | |
| 3335 | |
| 3336 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 3337 set_aggressive_opts_flags(); | |
| 3338 | |
|
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3339 // Turn off biased locking for locking debug mode flags, |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3340 // which are subtlely different from each other but neither works with |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3341 // biased locking. |
| 2331 | 3342 if (UseHeavyMonitors |
| 3343 #ifdef COMPILER1 | |
| 3344 || !UseFastLocking | |
| 3345 #endif // COMPILER1 | |
| 3346 ) { | |
|
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3347 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3348 // flag set to true on command line; warn the user that they |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3349 // can't enable biased locking here |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3350 warning("Biased Locking is not supported with locking debug flags" |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3351 "; ignoring UseBiasedLocking flag." ); |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3352 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3353 UseBiasedLocking = false; |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3354 } |
|
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3355 |
| 0 | 3356 #ifdef CC_INTERP |
| 1131 | 3357 // Clear flags not supported by the C++ interpreter |
| 3358 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
| 0 | 3359 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
| 1131 | 3360 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3361 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedKlassPointers, false)); |
| 1131 | 3362 #endif // CC_INTERP |
| 3363 | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3364 #ifdef COMPILER2 |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3365 if (!UseBiasedLocking || EmitSync != 0) { |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3366 UseOptoBiasInlining = false; |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3367 } |
| 4777 | 3368 if (!EliminateLocks) { |
| 3369 EliminateNestedLocks = false; | |
| 3370 } | |
| 7473 | 3371 if (!Inline) { |
| 3372 IncrementalInline = false; | |
| 3373 } | |
| 3374 #ifndef PRODUCT | |
| 3375 if (!IncrementalInline) { | |
| 3376 AlwaysIncrementalInline = false; | |
| 3377 } | |
| 3378 #endif | |
| 3379 if (IncrementalInline && FLAG_IS_DEFAULT(MaxNodeLimit)) { | |
| 3380 // incremental inlining: bump MaxNodeLimit | |
| 3381 FLAG_SET_DEFAULT(MaxNodeLimit, (intx)75000); | |
| 3382 } | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3383 #endif |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3384 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3385 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3386 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
|
3387 DebugNonSafepoints = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3388 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3389 |
|
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3390 #ifndef PRODUCT |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3391 if (CompileTheWorld) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3392 // 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
|
3393 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3394 NmethodSweepFraction = 1; |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3395 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3396 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3397 #endif |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3398 |
| 0 | 3399 if (PrintCommandLineFlags) { |
| 4773 | 3400 CommandLineFlags::printSetFlags(tty); |
| 0 | 3401 } |
| 3402 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3403 // Apply CPU specific policy for the BiasedLocking |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3404 if (UseBiasedLocking) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3405 if (!VM_Version::use_biased_locking() && |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3406 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3407 UseBiasedLocking = false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3408 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3409 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3410 |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3411 // set PauseAtExit if the gamma launcher was used and a debugger is attached |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3412 // but only if not already set on the commandline |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3413 if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3414 bool set = false; |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3415 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3416 if (!set) { |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3417 FLAG_SET_DEFAULT(PauseAtExit, true); |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3418 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3419 } |
|
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3420 |
| 0 | 3421 return JNI_OK; |
| 3422 } | |
| 3423 | |
|
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3424 jint Arguments::adjust_after_os() { |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3425 #if INCLUDE_ALL_GCS |
|
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3426 if (UseParallelGC || UseParallelOldGC) { |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3427 if (UseNUMA) { |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3428 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3429 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3430 } |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3431 // For those collectors or operating systems (eg, Windows) that do |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3432 // not support full UseNUMA, we will map to UseNUMAInterleaving for now |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3433 UseNUMAInterleaving = true; |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3434 } |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3435 } |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7479
diff
changeset
|
3436 #endif // INCLUDE_ALL_GCS |
|
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3437 return JNI_OK; |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3438 } |
|
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3439 |
| 0 | 3440 int Arguments::PropertyList_count(SystemProperty* pl) { |
| 3441 int count = 0; | |
| 3442 while(pl != NULL) { | |
| 3443 count++; | |
| 3444 pl = pl->next(); | |
| 3445 } | |
| 3446 return count; | |
| 3447 } | |
| 3448 | |
| 3449 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 3450 assert(key != NULL, "just checking"); | |
| 3451 SystemProperty* prop; | |
| 3452 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 3453 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 3454 } | |
| 3455 return NULL; | |
| 3456 } | |
| 3457 | |
| 3458 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 3459 int count = 0; | |
| 3460 const char* ret_val = NULL; | |
| 3461 | |
| 3462 while(pl != NULL) { | |
| 3463 if(count >= index) { | |
| 3464 ret_val = pl->key(); | |
| 3465 break; | |
| 3466 } | |
| 3467 count++; | |
| 3468 pl = pl->next(); | |
| 3469 } | |
| 3470 | |
| 3471 return ret_val; | |
| 3472 } | |
| 3473 | |
| 3474 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 3475 int count = 0; | |
| 3476 char* ret_val = NULL; | |
| 3477 | |
| 3478 while(pl != NULL) { | |
| 3479 if(count >= index) { | |
| 3480 ret_val = pl->value(); | |
| 3481 break; | |
| 3482 } | |
| 3483 count++; | |
| 3484 pl = pl->next(); | |
| 3485 } | |
| 3486 | |
| 3487 return ret_val; | |
| 3488 } | |
| 3489 | |
| 3490 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 3491 SystemProperty* p = *plist; | |
| 3492 if (p == NULL) { | |
| 3493 *plist = new_p; | |
| 3494 } else { | |
| 3495 while (p->next() != NULL) { | |
| 3496 p = p->next(); | |
| 3497 } | |
| 3498 p->set_next(new_p); | |
| 3499 } | |
| 3500 } | |
| 3501 | |
| 3502 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 3503 if (plist == NULL) | |
| 3504 return; | |
| 3505 | |
| 3506 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 3507 PropertyList_add(plist, new_p); | |
| 3508 } | |
| 3509 | |
| 3510 // This add maintains unique property key in the list. | |
| 691 | 3511 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 3512 if (plist == NULL) |
| 3513 return; | |
| 3514 | |
| 3515 // If property key exist then update with new value. | |
| 3516 SystemProperty* prop; | |
| 3517 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 3518 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 3519 if (append) { |
| 3520 prop->append_value(v); | |
| 3521 } else { | |
| 3522 prop->set_value(v); | |
| 3523 } | |
| 0 | 3524 return; |
| 3525 } | |
| 3526 } | |
| 3527 | |
| 3528 PropertyList_add(plist, k, v); | |
| 3529 } | |
| 3530 | |
| 3531 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 3532 // Returns true if all of the source pointed by src has been copied over to | |
| 3533 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 3534 // Notes: | |
| 3535 // 1. If the length (buflen) of the destination buffer excluding the | |
| 3536 // NULL terminator character is not long enough for holding the expanded | |
| 3537 // pid characters, it also returns false instead of returning the partially | |
| 3538 // expanded one. | |
| 3539 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 3540 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 3541 char* buf, size_t buflen) { | |
| 3542 const char* p = src; | |
| 3543 char* b = buf; | |
| 3544 const char* src_end = &src[srclen]; | |
| 3545 char* buf_end = &buf[buflen - 1]; | |
| 3546 | |
| 3547 while (p < src_end && b < buf_end) { | |
| 3548 if (*p == '%') { | |
| 3549 switch (*(++p)) { | |
| 3550 case '%': // "%%" ==> "%" | |
| 3551 *b++ = *p++; | |
| 3552 break; | |
| 3553 case 'p': { // "%p" ==> current process id | |
| 3554 // buf_end points to the character before the last character so | |
| 3555 // that we could write '\0' to the end of the buffer. | |
| 3556 size_t buf_sz = buf_end - b + 1; | |
| 3557 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 3558 | |
| 3559 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 3560 // the expanded pid, returns false. | |
| 3561 if (ret < 0 || ret >= (int)buf_sz) { | |
| 3562 return false; | |
| 3563 } else { | |
| 3564 b += ret; | |
| 3565 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 3566 if (p == src_end && b == buf_end + 1) { | |
| 3567 // reach the end of the buffer. | |
| 3568 return true; | |
| 3569 } | |
| 3570 } | |
| 3571 p++; | |
| 3572 break; | |
| 3573 } | |
| 3574 default : | |
| 3575 *b++ = '%'; | |
| 3576 } | |
| 3577 } else { | |
| 3578 *b++ = *p++; | |
| 3579 } | |
| 3580 } | |
| 3581 *b = '\0'; | |
| 3582 return (p == src_end); // return false if not all of the source was copied | |
| 3583 } |