Mercurial > hg > truffle
comparison src/share/vm/runtime/arguments.cpp @ 6948:e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 12 Nov 2012 23:14:12 +0100 |
parents | c38f13903fdf 8cb93eadfb6d |
children | 2cb439954abf edb2d7ed9a01 |
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6711:ae13cc658b80 | 6948:e522a00b91aa |
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256 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, | 256 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
257 { "UseParallelOldGCDensePrefix", | 257 { "UseParallelOldGCDensePrefix", |
258 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, | 258 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
259 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, | 259 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
260 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, | 260 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
261 { "CMSPermGenPrecleaningEnabled", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
262 { "CMSTriggerPermRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
263 { "CMSInitiatingPermOccupancyFraction", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
264 { "AdaptivePermSizeWeight", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
265 { "PermGenPadding", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
266 { "PermMarkSweepDeadRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
267 { "PermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
268 { "MaxPermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
269 { "MinPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
270 { "MaxPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
271 { "CMSRevisitStackSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
272 { "PrintRevisitStats", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
273 { "UseVectoredExceptions", JDK_Version::jdk(8), JDK_Version::jdk(9) }, | |
261 #ifdef PRODUCT | 274 #ifdef PRODUCT |
262 { "DesiredMethodLimit", | 275 { "DesiredMethodLimit", |
263 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, | 276 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
264 #endif // PRODUCT | 277 #endif // PRODUCT |
265 { NULL, JDK_Version(0), JDK_Version(0) } | 278 { NULL, JDK_Version(0), JDK_Version(0) } |
795 } | 808 } |
796 if (num_jvm_args() > 0) { | 809 if (num_jvm_args() > 0) { |
797 st->print("jvm_args: "); print_jvm_args_on(st); | 810 st->print("jvm_args: "); print_jvm_args_on(st); |
798 } | 811 } |
799 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | 812 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); |
813 if (_java_class_path != NULL) { | |
814 char* path = _java_class_path->value(); | |
815 st->print_cr("java_class_path (initial): %s", strlen(path) == 0 ? "<not set>" : path ); | |
816 } | |
800 st->print_cr("Launcher Type: %s", _sun_java_launcher); | 817 st->print_cr("Launcher Type: %s", _sun_java_launcher); |
801 } | 818 } |
802 | 819 |
803 void Arguments::print_jvm_flags_on(outputStream* st) { | 820 void Arguments::print_jvm_flags_on(outputStream* st) { |
804 if (_num_jvm_flags > 0) { | 821 if (_num_jvm_flags > 0) { |
877 bool in_quote = false; | 894 bool in_quote = false; |
878 char quote_c = 0; | 895 char quote_c = 0; |
879 bool result = true; | 896 bool result = true; |
880 | 897 |
881 int c = getc(stream); | 898 int c = getc(stream); |
882 while(c != EOF) { | 899 while(c != EOF && pos < (int)(sizeof(token)-1)) { |
883 if (in_white_space) { | 900 if (in_white_space) { |
884 if (in_comment) { | 901 if (in_comment) { |
885 if (c == '\n') in_comment = false; | 902 if (c == '\n') in_comment = false; |
886 } else { | 903 } else { |
887 if (c == '#') in_comment = true; | 904 if (c == '#') in_comment = true; |
1070 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { | 1087 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
1071 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | 1088 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); |
1072 } | 1089 } |
1073 } | 1090 } |
1074 | 1091 |
1075 #ifndef KERNEL | 1092 #if INCLUDE_ALTERNATE_GCS |
1076 static void disable_adaptive_size_policy(const char* collector_name) { | 1093 static void disable_adaptive_size_policy(const char* collector_name) { |
1077 if (UseAdaptiveSizePolicy) { | 1094 if (UseAdaptiveSizePolicy) { |
1078 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | 1095 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { |
1079 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | 1096 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", |
1080 collector_name); | 1097 collector_name); |
1102 FLAG_SET_DEFAULT(UseParNewGC, false); | 1119 FLAG_SET_DEFAULT(UseParNewGC, false); |
1103 FLAG_SET_DEFAULT(ParallelGCThreads, 0); | 1120 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
1104 } | 1121 } |
1105 } | 1122 } |
1106 if (UseParNewGC) { | 1123 if (UseParNewGC) { |
1107 // CDS doesn't work with ParNew yet | |
1108 no_shared_spaces(); | |
1109 | |
1110 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, | 1124 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
1111 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration | 1125 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
1112 // we set them to 1024 and 1024. | 1126 // we set them to 1024 and 1024. |
1113 // See CR 6362902. | 1127 // See CR 6362902. |
1114 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | 1128 if (FLAG_IS_DEFAULT(YoungPLABSize)) { |
1119 } | 1133 } |
1120 | 1134 |
1121 // AlwaysTenure flag should make ParNew promote all at first collection. | 1135 // AlwaysTenure flag should make ParNew promote all at first collection. |
1122 // See CR 6362902. | 1136 // See CR 6362902. |
1123 if (AlwaysTenure) { | 1137 if (AlwaysTenure) { |
1124 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | 1138 FLAG_SET_CMDLINE(uintx, MaxTenuringThreshold, 0); |
1125 } | 1139 } |
1126 // When using compressed oops, we use local overflow stacks, | 1140 // When using compressed oops, we use local overflow stacks, |
1127 // rather than using a global overflow list chained through | 1141 // rather than using a global overflow list chained through |
1128 // the klass word of the object's pre-image. | 1142 // the klass word of the object's pre-image. |
1129 if (UseCompressedOops && !ParGCUseLocalOverflow) { | 1143 if (UseCompressedOops && !ParGCUseLocalOverflow) { |
1148 // unless explicitly forbidden. | 1162 // unless explicitly forbidden. |
1149 if (FLAG_IS_DEFAULT(UseParNewGC)) { | 1163 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
1150 FLAG_SET_ERGO(bool, UseParNewGC, true); | 1164 FLAG_SET_ERGO(bool, UseParNewGC, true); |
1151 } | 1165 } |
1152 | 1166 |
1153 // Turn off AdaptiveSizePolicy for CMS until it is complete. | 1167 // Turn off AdaptiveSizePolicy by default for cms until it is complete. |
1154 disable_adaptive_size_policy("UseConcMarkSweepGC"); | 1168 disable_adaptive_size_policy("UseConcMarkSweepGC"); |
1155 | 1169 |
1156 // In either case, adjust ParallelGCThreads and/or UseParNewGC | 1170 // In either case, adjust ParallelGCThreads and/or UseParNewGC |
1157 // as needed. | 1171 // as needed. |
1158 if (UseParNewGC) { | 1172 if (UseParNewGC) { |
1238 } | 1252 } |
1239 // Unless explicitly requested otherwise, definitely | 1253 // Unless explicitly requested otherwise, definitely |
1240 // promote all objects surviving "tenuring_default" scavenges. | 1254 // promote all objects surviving "tenuring_default" scavenges. |
1241 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | 1255 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && |
1242 FLAG_IS_DEFAULT(SurvivorRatio)) { | 1256 FLAG_IS_DEFAULT(SurvivorRatio)) { |
1243 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); | 1257 FLAG_SET_ERGO(uintx, MaxTenuringThreshold, tenuring_default); |
1244 } | 1258 } |
1245 // If we decided above (or user explicitly requested) | 1259 // If we decided above (or user explicitly requested) |
1246 // `promote all' (via MaxTenuringThreshold := 0), | 1260 // `promote all' (via MaxTenuringThreshold := 0), |
1247 // prefer minuscule survivor spaces so as not to waste | 1261 // prefer minuscule survivor spaces so as not to waste |
1248 // space for (non-existent) survivors | 1262 // space for (non-existent) survivors |
1290 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | 1304 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", |
1291 MarkStackSize / K, MarkStackSizeMax / K); | 1305 MarkStackSize / K, MarkStackSizeMax / K); |
1292 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | 1306 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); |
1293 } | 1307 } |
1294 } | 1308 } |
1295 #endif // KERNEL | 1309 #endif // INCLUDE_ALTERNATE_GCS |
1296 | 1310 |
1297 void set_object_alignment() { | 1311 void set_object_alignment() { |
1298 // Object alignment. | 1312 // Object alignment. |
1299 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); | 1313 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
1300 MinObjAlignmentInBytes = ObjectAlignmentInBytes; | 1314 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
1307 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; | 1321 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
1308 | 1322 |
1309 // Oop encoding heap max | 1323 // Oop encoding heap max |
1310 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; | 1324 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
1311 | 1325 |
1312 #ifndef KERNEL | 1326 #if INCLUDE_ALTERNATE_GCS |
1313 // Set CMS global values | 1327 // Set CMS global values |
1314 CompactibleFreeListSpace::set_cms_values(); | 1328 CompactibleFreeListSpace::set_cms_values(); |
1315 #endif // KERNEL | 1329 #endif // INCLUDE_ALTERNATE_GCS |
1316 } | 1330 } |
1317 | 1331 |
1318 bool verify_object_alignment() { | 1332 bool verify_object_alignment() { |
1319 // Object alignment. | 1333 // Object alignment. |
1320 if (!is_power_of_2(ObjectAlignmentInBytes)) { | 1334 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
1348 return true; | 1362 return true; |
1349 } | 1363 } |
1350 | 1364 |
1351 inline uintx max_heap_for_compressed_oops() { | 1365 inline uintx max_heap_for_compressed_oops() { |
1352 // Avoid sign flip. | 1366 // Avoid sign flip. |
1353 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) { | 1367 if (OopEncodingHeapMax < ClassMetaspaceSize + os::vm_page_size()) { |
1354 return 0; | 1368 return 0; |
1355 } | 1369 } |
1356 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); | 1370 LP64_ONLY(return OopEncodingHeapMax - ClassMetaspaceSize - os::vm_page_size()); |
1357 NOT_LP64(ShouldNotReachHere(); return 0); | 1371 NOT_LP64(ShouldNotReachHere(); return 0); |
1358 } | 1372 } |
1359 | 1373 |
1360 bool Arguments::should_auto_select_low_pause_collector() { | 1374 bool Arguments::should_auto_select_low_pause_collector() { |
1361 if (UseAutoGCSelectPolicy && | 1375 if (UseAutoGCSelectPolicy && |
1370 } | 1384 } |
1371 return false; | 1385 return false; |
1372 } | 1386 } |
1373 | 1387 |
1374 void Arguments::set_ergonomics_flags() { | 1388 void Arguments::set_ergonomics_flags() { |
1375 // Parallel GC is not compatible with sharing. If one specifies | |
1376 // that they want sharing explicitly, do not set ergonomics flags. | |
1377 if (DumpSharedSpaces || RequireSharedSpaces) { | |
1378 return; | |
1379 } | |
1380 | 1389 |
1381 if (os::is_server_class_machine()) { | 1390 if (os::is_server_class_machine()) { |
1382 // If no other collector is requested explicitly, | 1391 // If no other collector is requested explicitly, |
1383 // let the VM select the collector based on | 1392 // let the VM select the collector based on |
1384 // machine class and automatic selection policy. | 1393 // machine class and automatic selection policy. |
1385 if (!UseSerialGC && | 1394 if (!UseSerialGC && |
1386 !UseConcMarkSweepGC && | 1395 !UseConcMarkSweepGC && |
1387 !UseG1GC && | 1396 !UseG1GC && |
1388 !UseParNewGC && | 1397 !UseParNewGC && |
1389 !DumpSharedSpaces && | |
1390 FLAG_IS_DEFAULT(UseParallelGC)) { | 1398 FLAG_IS_DEFAULT(UseParallelGC)) { |
1391 if (should_auto_select_low_pause_collector()) { | 1399 if (should_auto_select_low_pause_collector()) { |
1392 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | 1400 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); |
1393 } else { | 1401 } else { |
1394 FLAG_SET_ERGO(bool, UseParallelGC, true); | 1402 FLAG_SET_ERGO(bool, UseParallelGC, true); |
1395 } | 1403 } |
1404 } | |
1405 // Shared spaces work fine with other GCs but causes bytecode rewriting | |
1406 // to be disabled, which hurts interpreter performance and decreases | |
1407 // server performance. On server class machines, keep the default | |
1408 // off unless it is asked for. Future work: either add bytecode rewriting | |
1409 // at link time, or rewrite bytecodes in non-shared methods. | |
1410 if (!DumpSharedSpaces && !RequireSharedSpaces) { | |
1396 no_shared_spaces(); | 1411 no_shared_spaces(); |
1397 } | 1412 } |
1398 } | 1413 } |
1399 | 1414 |
1400 #ifndef ZERO | 1415 #ifndef ZERO |
1418 #endif // _WIN64 | 1433 #endif // _WIN64 |
1419 } else { | 1434 } else { |
1420 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { | 1435 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
1421 warning("Max heap size too large for Compressed Oops"); | 1436 warning("Max heap size too large for Compressed Oops"); |
1422 FLAG_SET_DEFAULT(UseCompressedOops, false); | 1437 FLAG_SET_DEFAULT(UseCompressedOops, false); |
1438 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); | |
1439 } | |
1440 } | |
1441 // UseCompressedOops must be on for UseCompressedKlassPointers to be on. | |
1442 if (!UseCompressedOops) { | |
1443 if (UseCompressedKlassPointers) { | |
1444 warning("UseCompressedKlassPointers requires UseCompressedOops"); | |
1445 } | |
1446 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); | |
1447 } else { | |
1448 // Turn on UseCompressedKlassPointers too | |
1449 if (FLAG_IS_DEFAULT(UseCompressedKlassPointers)) { | |
1450 FLAG_SET_ERGO(bool, UseCompressedKlassPointers, true); | |
1451 } | |
1452 // Set the ClassMetaspaceSize to something that will not need to be | |
1453 // expanded, since it cannot be expanded. | |
1454 if (UseCompressedKlassPointers && FLAG_IS_DEFAULT(ClassMetaspaceSize)) { | |
1455 // 100,000 classes seems like a good size, so 100M assumes around 1K | |
1456 // per klass. The vtable and oopMap is embedded so we don't have a fixed | |
1457 // size per klass. Eventually, this will be parameterized because it | |
1458 // would also be useful to determine the optimal size of the | |
1459 // systemDictionary. | |
1460 FLAG_SET_ERGO(uintx, ClassMetaspaceSize, 100*M); | |
1423 } | 1461 } |
1424 } | 1462 } |
1425 // Also checks that certain machines are slower with compressed oops | 1463 // Also checks that certain machines are slower with compressed oops |
1426 // in vm_version initialization code. | 1464 // in vm_version initialization code. |
1427 #endif // _LP64 | 1465 #endif // _LP64 |
1459 // Par compact uses lower default values since they are treated as | 1497 // Par compact uses lower default values since they are treated as |
1460 // minimums. These are different defaults because of the different | 1498 // minimums. These are different defaults because of the different |
1461 // interpretation and are not ergonomically set. | 1499 // interpretation and are not ergonomically set. |
1462 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { | 1500 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
1463 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); | 1501 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
1464 } | |
1465 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
1466 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); | |
1467 } | 1502 } |
1468 } | 1503 } |
1469 } | 1504 } |
1470 if (UseNUMA) { | 1505 if (UseNUMA) { |
1471 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { | 1506 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
1486 Abstract_VM_Version::parallel_worker_threads()); | 1521 Abstract_VM_Version::parallel_worker_threads()); |
1487 if (ParallelGCThreads == 0) { | 1522 if (ParallelGCThreads == 0) { |
1488 FLAG_SET_DEFAULT(ParallelGCThreads, | 1523 FLAG_SET_DEFAULT(ParallelGCThreads, |
1489 Abstract_VM_Version::parallel_worker_threads()); | 1524 Abstract_VM_Version::parallel_worker_threads()); |
1490 } | 1525 } |
1491 no_shared_spaces(); | |
1492 | 1526 |
1493 if (FLAG_IS_DEFAULT(MarkStackSize)) { | 1527 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
1494 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); | 1528 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
1495 } | 1529 } |
1496 if (PrintGCDetails && Verbose) { | 1530 if (PrintGCDetails && Verbose) { |
1822 status = false; | 1856 status = false; |
1823 } | 1857 } |
1824 | 1858 |
1825 status = status && verify_percentage(AdaptiveSizePolicyWeight, | 1859 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
1826 "AdaptiveSizePolicyWeight"); | 1860 "AdaptiveSizePolicyWeight"); |
1827 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); | |
1828 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); | 1861 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
1829 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); | 1862 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
1830 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); | 1863 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
1831 | 1864 |
1832 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | 1865 if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
1962 status = status && verify_interval(TLABWasteTargetPercent, | 1995 status = status && verify_interval(TLABWasteTargetPercent, |
1963 1, 100, "TLABWasteTargetPercent"); | 1996 1, 100, "TLABWasteTargetPercent"); |
1964 | 1997 |
1965 status = status && verify_object_alignment(); | 1998 status = status && verify_object_alignment(); |
1966 | 1999 |
2000 status = status && verify_min_value(ClassMetaspaceSize, 1*M, | |
2001 "ClassMetaspaceSize"); | |
2002 | |
2003 #ifdef SPARC | |
2004 if (UseConcMarkSweepGC || UseG1GC) { | |
2005 // Issue a stern warning if the user has explicitly set | |
2006 // UseMemSetInBOT (it is known to cause issues), but allow | |
2007 // use for experimentation and debugging. | |
2008 if (VM_Version::is_sun4v() && UseMemSetInBOT) { | |
2009 assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error"); | |
2010 warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability" | |
2011 " on sun4v; please understand that you are using at your own risk!"); | |
2012 } | |
2013 } | |
2014 #endif // SPARC | |
2015 | |
2016 if (PrintNMTStatistics) { | |
2017 #if INCLUDE_NMT | |
2018 if (MemTracker::tracking_level() == MemTracker::NMT_off) { | |
2019 #endif // INCLUDE_NMT | |
2020 warning("PrintNMTStatistics is disabled, because native memory tracking is not enabled"); | |
2021 PrintNMTStatistics = false; | |
2022 #if INCLUDE_NMT | |
2023 } | |
2024 #endif | |
2025 } | |
1967 #ifdef GRAAL | 2026 #ifdef GRAAL |
1968 if (UseCompressedOops) { | 2027 if (UseCompressedOops) { |
1969 jio_fprintf(defaultStream::error_stream(), | 2028 jio_fprintf(defaultStream::error_stream(), |
1970 "CompressedOops are not supported in Graal at the moment\n"); | 2029 "CompressedOops are not supported in Graal at the moment\n"); |
1971 status = false; | 2030 status = false; |
1972 } | 2031 } |
1973 if (UseG1GC) { | 2032 if (UseG1GC) { |
1974 jio_fprintf(defaultStream::error_stream(), | 2033 jio_fprintf(defaultStream::error_stream(), |
1975 "G1 is not supported in Graal at the moment\n"); | 2034 "G1 is not supported in Graal at the moment\n"); |
1976 status = false; | 2035 status = false; |
1977 } | 2036 } |
2037 | |
2038 if (!ScavengeRootsInCode) { | |
2039 warning("forcing ScavengeRootsInCode non-zero because Graal is enabled"); | |
2040 ScavengeRootsInCode = 1; | |
2041 } | |
2042 | |
1978 #endif | 2043 #endif |
1979 | |
1980 return status; | 2044 return status; |
1981 } | 2045 } |
1982 | 2046 |
1983 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | 2047 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, |
1984 const char* option_type) { | 2048 const char* option_type) { |
2305 char *options = NULL; | 2369 char *options = NULL; |
2306 if(pos != NULL) { | 2370 if(pos != NULL) { |
2307 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | 2371 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. |
2308 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); | 2372 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); |
2309 } | 2373 } |
2310 #ifdef JVMTI_KERNEL | 2374 #if !INCLUDE_JVMTI |
2311 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | 2375 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
2312 warning("profiling and debugging agents are not supported with Kernel VM"); | 2376 warning("profiling and debugging agents are not supported in this VM"); |
2313 } else | 2377 } else |
2314 #endif // JVMTI_KERNEL | 2378 #endif // !INCLUDE_JVMTI |
2315 add_init_library(name, options); | 2379 add_init_library(name, options); |
2316 } | 2380 } |
2317 // -agentlib and -agentpath | 2381 // -agentlib and -agentpath |
2318 } else if (match_option(option, "-agentlib:", &tail) || | 2382 } else if (match_option(option, "-agentlib:", &tail) || |
2319 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | 2383 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { |
2320 if(tail != NULL) { | 2384 if(tail != NULL) { |
2325 | 2389 |
2326 char *options = NULL; | 2390 char *options = NULL; |
2327 if(pos != NULL) { | 2391 if(pos != NULL) { |
2328 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); | 2392 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); |
2329 } | 2393 } |
2330 #ifdef JVMTI_KERNEL | 2394 #if !INCLUDE_JVMTI |
2331 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | 2395 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
2332 warning("profiling and debugging agents are not supported with Kernel VM"); | 2396 warning("profiling and debugging agents are not supported in this VM"); |
2333 } else | 2397 } else |
2334 #endif // JVMTI_KERNEL | 2398 #endif // !INCLUDE_JVMTI |
2335 add_init_agent(name, options, is_absolute_path); | 2399 add_init_agent(name, options, is_absolute_path); |
2336 | 2400 |
2337 } | 2401 } |
2338 // -javaagent | 2402 // -javaagent |
2339 } else if (match_option(option, "-javaagent:", &tail)) { | 2403 } else if (match_option(option, "-javaagent:", &tail)) { |
2404 #if !INCLUDE_JVMTI | |
2405 warning("Instrumentation agents are not supported in this VM"); | |
2406 #else | |
2340 if(tail != NULL) { | 2407 if(tail != NULL) { |
2341 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); | 2408 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); |
2342 add_init_agent("instrument", options, false); | 2409 add_init_agent("instrument", options, false); |
2343 } | 2410 } |
2411 #endif // !INCLUDE_JVMTI | |
2344 // -Xnoclassgc | 2412 // -Xnoclassgc |
2345 } else if (match_option(option, "-Xnoclassgc", &tail)) { | 2413 } else if (match_option(option, "-Xnoclassgc", &tail)) { |
2346 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | 2414 FLAG_SET_CMDLINE(bool, ClassUnloading, false); |
2347 // -Xincgc: i-CMS | 2415 // -Xincgc: i-CMS |
2348 } else if (match_option(option, "-Xincgc", &tail)) { | 2416 } else if (match_option(option, "-Xincgc", &tail)) { |
2470 // -Xoptimize | 2538 // -Xoptimize |
2471 } else if (match_option(option, "-Xoptimize", &tail)) { | 2539 } else if (match_option(option, "-Xoptimize", &tail)) { |
2472 // EVM option, ignore silently for compatibility | 2540 // EVM option, ignore silently for compatibility |
2473 // -Xprof | 2541 // -Xprof |
2474 } else if (match_option(option, "-Xprof", &tail)) { | 2542 } else if (match_option(option, "-Xprof", &tail)) { |
2475 #ifndef FPROF_KERNEL | 2543 #if INCLUDE_FPROF |
2476 _has_profile = true; | 2544 _has_profile = true; |
2477 #else // FPROF_KERNEL | 2545 #else // INCLUDE_FPROF |
2478 // do we have to exit? | 2546 // do we have to exit? |
2479 warning("Kernel VM does not support flat profiling."); | 2547 warning("Flat profiling is not supported in this VM."); |
2480 #endif // FPROF_KERNEL | 2548 #endif // INCLUDE_FPROF |
2481 // -Xaprof | 2549 // -Xaprof |
2482 } else if (match_option(option, "-Xaprof", &tail)) { | 2550 } else if (match_option(option, "-Xaprof", &tail)) { |
2483 _has_alloc_profile = true; | 2551 _has_alloc_profile = true; |
2484 // -Xconcurrentio | 2552 // -Xconcurrentio |
2485 } else if (match_option(option, "-Xconcurrentio", &tail)) { | 2553 } else if (match_option(option, "-Xconcurrentio", &tail)) { |
2520 // for testing the compiler; turn off all flags that inhibit compilation | 2588 // for testing the compiler; turn off all flags that inhibit compilation |
2521 set_mode_flags(_comp); | 2589 set_mode_flags(_comp); |
2522 | 2590 |
2523 // -Xshare:dump | 2591 // -Xshare:dump |
2524 } else if (match_option(option, "-Xshare:dump", &tail)) { | 2592 } else if (match_option(option, "-Xshare:dump", &tail)) { |
2525 #ifdef TIERED | 2593 #if defined(KERNEL) |
2526 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2527 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2528 #elif defined(COMPILER2) | |
2529 vm_exit_during_initialization( | |
2530 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
2531 #elif defined(KERNEL) | |
2532 vm_exit_during_initialization( | 2594 vm_exit_during_initialization( |
2533 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | 2595 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); |
2596 #elif !INCLUDE_CDS | |
2597 vm_exit_during_initialization( | |
2598 "Dumping a shared archive is not supported in this VM.", NULL); | |
2534 #else | 2599 #else |
2535 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | 2600 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); |
2536 set_mode_flags(_int); // Prevent compilation, which creates objects | 2601 set_mode_flags(_int); // Prevent compilation, which creates objects |
2537 #endif | 2602 #endif |
2538 // -Xshare:on | 2603 // -Xshare:on |
2581 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | 2646 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); |
2582 | 2647 |
2583 // JNI hooks | 2648 // JNI hooks |
2584 } else if (match_option(option, "-Xcheck", &tail)) { | 2649 } else if (match_option(option, "-Xcheck", &tail)) { |
2585 if (!strcmp(tail, ":jni")) { | 2650 if (!strcmp(tail, ":jni")) { |
2651 #if !INCLUDE_JNI_CHECK | |
2652 warning("JNI CHECKING is not supported in this VM"); | |
2653 #else | |
2586 CheckJNICalls = true; | 2654 CheckJNICalls = true; |
2655 #endif // INCLUDE_JNI_CHECK | |
2587 } else if (is_bad_option(option, args->ignoreUnrecognized, | 2656 } else if (is_bad_option(option, args->ignoreUnrecognized, |
2588 "check")) { | 2657 "check")) { |
2589 return JNI_EINVAL; | 2658 return JNI_EINVAL; |
2590 } | 2659 } |
2591 } else if (match_option(option, "vfprintf", &tail)) { | 2660 } else if (match_option(option, "vfprintf", &tail)) { |
2626 | 2695 |
2627 // Make sure that if we have a lot of memory we cap the 32 bit | 2696 // Make sure that if we have a lot of memory we cap the 32 bit |
2628 // process space. The 64bit VM version of this function is a nop. | 2697 // process space. The 64bit VM version of this function is a nop. |
2629 initHeapSize = os::allocatable_physical_memory(initHeapSize); | 2698 initHeapSize = os::allocatable_physical_memory(initHeapSize); |
2630 | 2699 |
2631 // The perm gen is separate but contiguous with the | |
2632 // object heap (and is reserved with it) so subtract it | |
2633 // from the heap size. | |
2634 if (initHeapSize > MaxPermSize) { | |
2635 initHeapSize = initHeapSize - MaxPermSize; | |
2636 } else { | |
2637 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
2638 } | |
2639 | |
2640 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | 2700 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
2641 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | 2701 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); |
2642 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); | 2702 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
2643 // Currently the minimum size and the initial heap sizes are the same. | 2703 // Currently the minimum size and the initial heap sizes are the same. |
2644 set_min_heap_size(initHeapSize); | 2704 set_min_heap_size(initHeapSize); |
2648 FLAG_SET_CMDLINE(uintx, NewSize, | 2708 FLAG_SET_CMDLINE(uintx, NewSize, |
2649 ((julong)MaxHeapSize / (julong)8) * (julong)3); | 2709 ((julong)MaxHeapSize / (julong)8) * (julong)3); |
2650 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | 2710 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); |
2651 } | 2711 } |
2652 | 2712 |
2713 #ifndef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. | |
2653 FLAG_SET_DEFAULT(UseLargePages, true); | 2714 FLAG_SET_DEFAULT(UseLargePages, true); |
2715 #endif | |
2654 | 2716 |
2655 // Increase some data structure sizes for efficiency | 2717 // Increase some data structure sizes for efficiency |
2656 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | 2718 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); |
2657 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | 2719 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); |
2658 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | 2720 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); |
2855 option->optionString); | 2917 option->optionString); |
2856 describe_range_error(errcode); | 2918 describe_range_error(errcode); |
2857 return JNI_EINVAL; | 2919 return JNI_EINVAL; |
2858 } | 2920 } |
2859 FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); | 2921 FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); |
2922 } else if (match_option(option, "-XX:+UseVMInterruptibleIO", &tail)) { | |
2923 // NOTE! In JDK 9, the UseVMInterruptibleIO flag will completely go | |
2924 // away and will cause VM initialization failures! | |
2925 warning("-XX:+UseVMInterruptibleIO is obsolete and will be removed in a future release."); | |
2926 FLAG_SET_CMDLINE(bool, UseVMInterruptibleIO, true); | |
2860 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx | 2927 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
2861 // Skip -XX:Flags= since that case has already been handled | 2928 // Skip -XX:Flags= since that case has already been handled |
2862 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | 2929 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { |
2863 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | 2930 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { |
2864 return JNI_EINVAL; | 2931 return JNI_EINVAL; |
2881 } | 2948 } |
2882 } | 2949 } |
2883 | 2950 |
2884 // Change the default value for flags which have different default values | 2951 // Change the default value for flags which have different default values |
2885 // when working with older JDKs. | 2952 // when working with older JDKs. |
2886 if (JDK_Version::current().compare_major(6) <= 0 && | |
2887 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { | |
2888 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); | |
2889 } | |
2890 #ifdef LINUX | 2953 #ifdef LINUX |
2891 if (JDK_Version::current().compare_major(6) <= 0 && | 2954 if (JDK_Version::current().compare_major(6) <= 0 && |
2892 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { | 2955 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
2893 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); | 2956 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
2894 } | 2957 } |
3050 | 3113 |
3051 void Arguments::set_shared_spaces_flags() { | 3114 void Arguments::set_shared_spaces_flags() { |
3052 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; | 3115 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
3053 const bool might_share = must_share || UseSharedSpaces; | 3116 const bool might_share = must_share || UseSharedSpaces; |
3054 | 3117 |
3055 // The string table is part of the shared archive so the size must match. | 3118 // CompressedOops cannot be used with CDS. The offsets of oopmaps and |
3056 if (!FLAG_IS_DEFAULT(StringTableSize)) { | 3119 // static fields are incorrect in the archive. With some more clever |
3057 // Disable sharing. | 3120 // initialization, this restriction can probably be lifted. |
3058 if (must_share) { | 3121 // ??? UseLargePages might be okay now |
3059 warning("disabling shared archive %s because of non-default " | 3122 const bool cannot_share = UseCompressedOops || |
3060 "StringTableSize", DumpSharedSpaces ? "creation" : "use"); | 3123 (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); |
3061 } | |
3062 if (might_share) { | |
3063 FLAG_SET_DEFAULT(DumpSharedSpaces, false); | |
3064 FLAG_SET_DEFAULT(RequireSharedSpaces, false); | |
3065 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
3066 } | |
3067 return; | |
3068 } | |
3069 | |
3070 // Check whether class data sharing settings conflict with GC, compressed oops | |
3071 // or page size, and fix them up. Explicit sharing options override other | |
3072 // settings. | |
3073 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || | |
3074 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || | |
3075 UseCompressedOops || UseLargePages && FLAG_IS_CMDLINE(UseLargePages); | |
3076 if (cannot_share) { | 3124 if (cannot_share) { |
3077 if (must_share) { | 3125 if (must_share) { |
3078 warning("selecting serial gc and disabling large pages %s" | 3126 warning("disabling large pages %s" |
3079 "because of %s", "" LP64_ONLY("and compressed oops "), | 3127 "because of %s", "" LP64_ONLY("and compressed oops "), |
3080 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | 3128 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); |
3081 force_serial_gc(); | |
3082 FLAG_SET_CMDLINE(bool, UseLargePages, false); | 3129 FLAG_SET_CMDLINE(bool, UseLargePages, false); |
3083 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | 3130 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); |
3131 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); | |
3084 } else { | 3132 } else { |
3133 // Prefer compressed oops and large pages to class data sharing | |
3085 if (UseSharedSpaces && Verbose) { | 3134 if (UseSharedSpaces && Verbose) { |
3086 warning("turning off use of shared archive because of " | 3135 warning("turning off use of shared archive because of large pages%s", |
3087 "choice of garbage collector or large pages"); | 3136 "" LP64_ONLY(" and/or compressed oops")); |
3088 } | 3137 } |
3089 no_shared_spaces(); | 3138 no_shared_spaces(); |
3090 } | 3139 } |
3091 } else if (UseLargePages && might_share) { | 3140 } else if (UseLargePages && might_share) { |
3092 // Disable large pages to allow shared spaces. This is sub-optimal, since | 3141 // Disable large pages to allow shared spaces. This is sub-optimal, since |
3093 // there may not even be a shared archive to use. | 3142 // there may not even be a shared archive to use. |
3094 FLAG_SET_DEFAULT(UseLargePages, false); | 3143 FLAG_SET_DEFAULT(UseLargePages, false); |
3144 } | |
3145 | |
3146 // Add 2M to any size for SharedReadOnlySize to get around the JPRT setting | |
3147 if (DumpSharedSpaces && !FLAG_IS_DEFAULT(SharedReadOnlySize)) { | |
3148 SharedReadOnlySize = 14*M; | |
3149 } | |
3150 | |
3151 if (DumpSharedSpaces) { | |
3152 if (RequireSharedSpaces) { | |
3153 warning("cannot dump shared archive while using shared archive"); | |
3154 } | |
3155 UseSharedSpaces = false; | |
3095 } | 3156 } |
3096 } | 3157 } |
3097 | 3158 |
3098 // Disable options not supported in this release, with a warning if they | 3159 // Disable options not supported in this release, with a warning if they |
3099 // were explicitly requested on the command-line | 3160 // were explicitly requested on the command-line |
3158 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { | 3219 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
3159 CommandLineFlags::printFlags(tty, false); | 3220 CommandLineFlags::printFlags(tty, false); |
3160 vm_exit(0); | 3221 vm_exit(0); |
3161 } | 3222 } |
3162 if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { | 3223 if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { |
3224 #if INCLUDE_NMT | |
3163 MemTracker::init_tracking_options(tail); | 3225 MemTracker::init_tracking_options(tail); |
3226 #else | |
3227 warning("Native Memory Tracking is not supported in this VM"); | |
3228 #endif | |
3164 } | 3229 } |
3165 | 3230 |
3166 | 3231 |
3167 #ifndef PRODUCT | 3232 #ifndef PRODUCT |
3168 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { | 3233 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
3221 | 3286 |
3222 #if (defined JAVASE_EMBEDDED || defined ARM) | 3287 #if (defined JAVASE_EMBEDDED || defined ARM) |
3223 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); | 3288 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
3224 #endif | 3289 #endif |
3225 | 3290 |
3291 #ifdef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. | |
3292 UNSUPPORTED_OPTION(UseLargePages, "-XX:+UseLargePages"); | |
3293 #endif | |
3294 | |
3295 #if !INCLUDE_ALTERNATE_GCS | |
3296 if (UseParallelGC) { | |
3297 warning("Parallel GC is not supported in this VM. Using Serial GC."); | |
3298 } | |
3299 if (UseParallelOldGC) { | |
3300 warning("Parallel Old GC is not supported in this VM. Using Serial GC."); | |
3301 } | |
3302 if (UseConcMarkSweepGC) { | |
3303 warning("Concurrent Mark Sweep GC is not supported in this VM. Using Serial GC."); | |
3304 } | |
3305 if (UseParNewGC) { | |
3306 warning("Par New GC is not supported in this VM. Using Serial GC."); | |
3307 } | |
3308 #endif // INCLUDE_ALTERNATE_GCS | |
3309 | |
3226 #ifndef PRODUCT | 3310 #ifndef PRODUCT |
3227 if (TraceBytecodesAt != 0) { | 3311 if (TraceBytecodesAt != 0) { |
3228 TraceBytecodes = true; | 3312 TraceBytecodes = true; |
3229 } | 3313 } |
3230 if (CountCompiledCalls) { | 3314 if (CountCompiledCalls) { |
3249 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { | 3333 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
3250 warning("forcing ScavengeRootsInCode non-zero because EnableInvokeDynamic is true"); | 3334 warning("forcing ScavengeRootsInCode non-zero because EnableInvokeDynamic is true"); |
3251 } | 3335 } |
3252 ScavengeRootsInCode = 1; | 3336 ScavengeRootsInCode = 1; |
3253 } | 3337 } |
3254 if (!JavaObjectsInPerm && ScavengeRootsInCode == 0) { | |
3255 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { | |
3256 warning("forcing ScavengeRootsInCode non-zero because JavaObjectsInPerm is false"); | |
3257 } | |
3258 ScavengeRootsInCode = 1; | |
3259 } | |
3260 | 3338 |
3261 if (PrintGCDetails) { | 3339 if (PrintGCDetails) { |
3262 // Turn on -verbose:gc options as well | 3340 // Turn on -verbose:gc options as well |
3263 PrintGC = true; | 3341 PrintGC = true; |
3264 } | 3342 } |
3275 set_object_alignment(); | 3353 set_object_alignment(); |
3276 | 3354 |
3277 #ifdef SERIALGC | 3355 #ifdef SERIALGC |
3278 force_serial_gc(); | 3356 force_serial_gc(); |
3279 #endif // SERIALGC | 3357 #endif // SERIALGC |
3280 #ifdef KERNEL | 3358 #if !INCLUDE_CDS |
3281 no_shared_spaces(); | 3359 no_shared_spaces(); |
3282 #endif // KERNEL | 3360 #endif // INCLUDE_CDS |
3283 | 3361 |
3284 // Set flags based on ergonomics. | 3362 // Set flags based on ergonomics. |
3285 set_ergonomics_flags(); | 3363 set_ergonomics_flags(); |
3286 | 3364 |
3287 set_shared_spaces_flags(); | 3365 set_shared_spaces_flags(); |
3299 vm_exit_during_initialization( | 3377 vm_exit_during_initialization( |
3300 "Incompatible compilation policy selected", NULL); | 3378 "Incompatible compilation policy selected", NULL); |
3301 } | 3379 } |
3302 } | 3380 } |
3303 | 3381 |
3304 #ifndef KERNEL | |
3305 // Set heap size based on available physical memory | 3382 // Set heap size based on available physical memory |
3306 set_heap_size(); | 3383 set_heap_size(); |
3384 | |
3385 #if INCLUDE_ALTERNATE_GCS | |
3307 // Set per-collector flags | 3386 // Set per-collector flags |
3308 if (UseParallelGC || UseParallelOldGC) { | 3387 if (UseParallelGC || UseParallelOldGC) { |
3309 set_parallel_gc_flags(); | 3388 set_parallel_gc_flags(); |
3310 } else if (UseConcMarkSweepGC) { // should be done before ParNew check below | 3389 } else if (UseConcMarkSweepGC) { // should be done before ParNew check below |
3311 set_cms_and_parnew_gc_flags(); | 3390 set_cms_and_parnew_gc_flags(); |
3312 } else if (UseParNewGC) { // skipped if CMS is set above | 3391 } else if (UseParNewGC) { // skipped if CMS is set above |
3313 set_parnew_gc_flags(); | 3392 set_parnew_gc_flags(); |
3314 } else if (UseG1GC) { | 3393 } else if (UseG1GC) { |
3315 set_g1_gc_flags(); | 3394 set_g1_gc_flags(); |
3316 } | 3395 } |
3317 #endif // KERNEL | 3396 #endif // INCLUDE_ALTERNATE_GCS |
3318 | 3397 |
3319 #ifdef SERIALGC | 3398 #ifdef SERIALGC |
3320 assert(verify_serial_gc_flags(), "SerialGC unset"); | 3399 assert(verify_serial_gc_flags(), "SerialGC unset"); |
3321 #endif // SERIALGC | 3400 #endif // SERIALGC |
3322 | 3401 |
3346 #ifdef CC_INTERP | 3425 #ifdef CC_INTERP |
3347 // Clear flags not supported by the C++ interpreter | 3426 // Clear flags not supported by the C++ interpreter |
3348 FLAG_SET_DEFAULT(ProfileInterpreter, false); | 3427 FLAG_SET_DEFAULT(ProfileInterpreter, false); |
3349 FLAG_SET_DEFAULT(UseBiasedLocking, false); | 3428 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
3350 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); | 3429 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
3430 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedKlassPointers, false)); | |
3351 #endif // CC_INTERP | 3431 #endif // CC_INTERP |
3352 | 3432 |
3353 #ifdef COMPILER2 | 3433 #ifdef COMPILER2 |
3354 if (!UseBiasedLocking || EmitSync != 0) { | 3434 if (!UseBiasedLocking || EmitSync != 0) { |
3355 UseOptoBiasInlining = false; | 3435 UseOptoBiasInlining = false; |