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comparison src/share/vm/memory/defNewGeneration.cpp @ 11973:7b06ae405d7b

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6990419: CMS Remaining work for 6572569: consistently skewed work distribution in (long) re-mark pauses Reviewed-by: rasbold, tschatzl, jmasa Contributed-by: yamauchi@google.com
author jmasa
date Tue, 23 Jul 2013 09:49:11 -0700
parents 71180a6e5080
children 330dfb0476f4
comparison
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11135:2285b4a0a4e6 11973:7b06ae405d7b
1031 // We try to allocate from the eden. If that works, we are happy. 1031 // We try to allocate from the eden. If that works, we are happy.
1032 // Note that since DefNewGeneration supports lock-free allocation, we 1032 // Note that since DefNewGeneration supports lock-free allocation, we
1033 // have to use it here, as well. 1033 // have to use it here, as well.
1034 HeapWord* result = eden()->par_allocate(word_size); 1034 HeapWord* result = eden()->par_allocate(word_size);
1035 if (result != NULL) { 1035 if (result != NULL) {
1036 if (CMSEdenChunksRecordAlways && _next_gen != NULL) {
1037 _next_gen->sample_eden_chunk();
1038 }
1036 return result; 1039 return result;
1037 } 1040 }
1038 do { 1041 do {
1039 HeapWord* old_limit = eden()->soft_end(); 1042 HeapWord* old_limit = eden()->soft_end();
1040 if (old_limit < eden()->end()) { 1043 if (old_limit < eden()->end()) {
1061 // out of heap space, and we try to allocate the from-space, too. 1064 // out of heap space, and we try to allocate the from-space, too.
1062 // allocate_from_space can't be inlined because that would introduce a 1065 // allocate_from_space can't be inlined because that would introduce a
1063 // circular dependency at compile time. 1066 // circular dependency at compile time.
1064 if (result == NULL) { 1067 if (result == NULL) {
1065 result = allocate_from_space(word_size); 1068 result = allocate_from_space(word_size);
1069 } else if (CMSEdenChunksRecordAlways && _next_gen != NULL) {
1070 _next_gen->sample_eden_chunk();
1066 } 1071 }
1067 return result; 1072 return result;
1068 } 1073 }
1069 1074
1070 HeapWord* DefNewGeneration::par_allocate(size_t word_size, 1075 HeapWord* DefNewGeneration::par_allocate(size_t word_size,
1071 bool is_tlab) { 1076 bool is_tlab) {
1072 return eden()->par_allocate(word_size); 1077 HeapWord* res = eden()->par_allocate(word_size);
1078 if (CMSEdenChunksRecordAlways && _next_gen != NULL) {
1079 _next_gen->sample_eden_chunk();
1080 }
1081 return res;
1073 } 1082 }
1074 1083
1075 void DefNewGeneration::gc_prologue(bool full) { 1084 void DefNewGeneration::gc_prologue(bool full) {
1076 // Ensure that _end and _soft_end are the same in eden space. 1085 // Ensure that _end and _soft_end are the same in eden space.
1077 eden()->set_soft_end(eden()->end()); 1086 eden()->set_soft_end(eden()->end());