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comparison src/share/vm/gc_implementation/g1/concurrentMark.cpp @ 989:148e5441d916

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6863023: need non-perm oops in code cache for JSR 292 Summary: Make a special root-list for those few nmethods which might contain non-perm oops. Reviewed-by: twisti, kvn, never, jmasa, ysr
author jrose
date Tue, 15 Sep 2009 21:53:47 -0700
parents 308762b2bf14
children 54b3b351d6f9
comparison
equal deleted inserted replaced
987:00977607da34 989:148e5441d916
745 sprintf(fn_buf, "/tmp/reachable.txt.%d", os::current_process_id()); 745 sprintf(fn_buf, "/tmp/reachable.txt.%d", os::current_process_id());
746 reachable_file = fopen(fn_buf, "w"); 746 reachable_file = fopen(fn_buf, "w");
747 // clear the mark bitmap (no grey objects to start with) 747 // clear the mark bitmap (no grey objects to start with)
748 _nextMarkBitMap->clearAll(); 748 _nextMarkBitMap->clearAll();
749 PrintReachableClosure prcl(_nextMarkBitMap); 749 PrintReachableClosure prcl(_nextMarkBitMap);
750 g1h->process_strong_roots( 750 g1h->process_strong_roots(true, // activate StrongRootsScope
751 false, // fake perm gen collection 751 false, // fake perm gen collection
752 SharedHeap::SO_AllClasses, 752 SharedHeap::SO_AllClasses,
753 &prcl, // Regular roots 753 &prcl, // Regular roots
754 NULL, // do not visit active blobs
754 &prcl // Perm Gen Roots 755 &prcl // Perm Gen Roots
755 ); 756 );
756 // The root iteration above "consumed" dirty cards in the perm gen. 757 // The root iteration above "consumed" dirty cards in the perm gen.
757 // Therefore, as a shortcut, we dirty all such cards. 758 // Therefore, as a shortcut, we dirty all such cards.
758 g1h->rem_set()->invalidate(g1h->perm_gen()->used_region(), false); 759 g1h->rem_set()->invalidate(g1h->perm_gen()->used_region(), false);
864 CMMarkRootsClosure older(this, g1h, true); 865 CMMarkRootsClosure older(this, g1h, true);
865 866
866 g1h->set_marking_started(); 867 g1h->set_marking_started();
867 g1h->rem_set()->prepare_for_younger_refs_iterate(false); 868 g1h->rem_set()->prepare_for_younger_refs_iterate(false);
868 869
869 g1h->process_strong_roots(false, // fake perm gen collection 870 g1h->process_strong_roots(true, // activate StrongRootsScope
871 false, // fake perm gen collection
870 SharedHeap::SO_AllClasses, 872 SharedHeap::SO_AllClasses,
871 &notOlder, // Regular roots 873 &notOlder, // Regular roots
874 NULL, // do not visit active blobs
872 &older // Perm Gen Roots 875 &older // Perm Gen Roots
873 ); 876 );
874 checkpointRootsInitialPost(); 877 checkpointRootsInitialPost();
875 878
876 // Statistics. 879 // Statistics.
1961 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 1964 G1CollectedHeap* g1h = G1CollectedHeap::heap();
1962 1965
1963 g1h->ensure_parsability(false); 1966 g1h->ensure_parsability(false);
1964 1967
1965 if (ParallelGCThreads > 0) { 1968 if (ParallelGCThreads > 0) {
1966 g1h->change_strong_roots_parity(); 1969 G1CollectedHeap::StrongRootsScope srs(g1h);
1967 // this is remark, so we'll use up all available threads 1970 // this is remark, so we'll use up all available threads
1968 int active_workers = ParallelGCThreads; 1971 int active_workers = ParallelGCThreads;
1969 set_phase(active_workers, false); 1972 set_phase(active_workers, false);
1970 1973
1971 CMRemarkTask remarkTask(this); 1974 CMRemarkTask remarkTask(this);
1978 g1h->set_par_threads(0); 1981 g1h->set_par_threads(0);
1979 1982
1980 SATBMarkQueueSet& satb_mq_set = JavaThread::satb_mark_queue_set(); 1983 SATBMarkQueueSet& satb_mq_set = JavaThread::satb_mark_queue_set();
1981 guarantee( satb_mq_set.completed_buffers_num() == 0, "invariant" ); 1984 guarantee( satb_mq_set.completed_buffers_num() == 0, "invariant" );
1982 } else { 1985 } else {
1983 g1h->change_strong_roots_parity(); 1986 G1CollectedHeap::StrongRootsScope srs(g1h);
1984 // this is remark, so we'll use up all available threads 1987 // this is remark, so we'll use up all available threads
1985 int active_workers = 1; 1988 int active_workers = 1;
1986 set_phase(active_workers, false); 1989 set_phase(active_workers, false);
1987 1990
1988 CMRemarkTask remarkTask(this); 1991 CMRemarkTask remarkTask(this);