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comparison src/share/vm/runtime/arguments.cpp @ 695:becb17ad5e51

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6824570: ParNew: Fix memory leak introduced in 6819891 Summary: Allocate worker-local overflow stacks, introduced in 6819891, along with ParNewGeneration, rather than with the per-scavenge ParScanThreadState. Reviewed-by: jmasa
author ysr
date Thu, 02 Apr 2009 15:57:41 -0700
parents bd441136a5ce
children 922aedc96ef5
comparison
equal deleted inserted replaced
679:cea947c8a988 695:becb17ad5e51
969 if (!UseParNewGC) { 969 if (!UseParNewGC) {
970 FLAG_SET_DEFAULT(ParallelGCThreads, 0); 970 FLAG_SET_DEFAULT(ParallelGCThreads, 0);
971 } else { 971 } else {
972 no_shared_spaces(); 972 no_shared_spaces();
973 973
974 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 correspondinly, 974 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively,
975 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration 975 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration
976 // we set them to 1024 and 1024. 976 // we set them to 1024 and 1024.
977 // See CR 6362902. 977 // See CR 6362902.
978 if (FLAG_IS_DEFAULT(YoungPLABSize)) { 978 if (FLAG_IS_DEFAULT(YoungPLABSize)) {
979 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); 979 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024);
985 // AlwaysTenure flag should make ParNew to promote all at first collection. 985 // AlwaysTenure flag should make ParNew to promote all at first collection.
986 // See CR 6362902. 986 // See CR 6362902.
987 if (AlwaysTenure) { 987 if (AlwaysTenure) {
988 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); 988 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0);
989 } 989 }
990 // When using compressed oops, we use local overflow stacks,
991 // rather than using a global overflow list chained through
992 // the klass word of the object's pre-image.
993 if (UseCompressedOops && !ParGCUseLocalOverflow) {
994 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) {
995 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references");
996 }
997 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true);
998 }
999 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error");
990 } 1000 }
991 } 1001 }
992 1002
993 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on 1003 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on
994 // sparc/solaris for certain applications, but would gain from 1004 // sparc/solaris for certain applications, but would gain from