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comparison src/share/vm/gc_implementation/g1/g1MarkSweep.cpp @ 1387:0bfd3fb24150

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6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. Summary: Ensure a full GC that clears SoftReferences before throwing an out-of-memory Reviewed-by: ysr, jcoomes
author jmasa
date Tue, 13 Apr 2010 13:52:10 -0700
parents 2a1472c30599
children c18cbe5936b8
comparison
equal deleted inserted replaced
1361:6b73e879f1c2 1387:0bfd3fb24150
1 /* 1 /*
2 * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 2001-2010 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
29 29
30 void G1MarkSweep::invoke_at_safepoint(ReferenceProcessor* rp, 30 void G1MarkSweep::invoke_at_safepoint(ReferenceProcessor* rp,
31 bool clear_all_softrefs) { 31 bool clear_all_softrefs) {
32 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint"); 32 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint");
33 33
34 SharedHeap* sh = SharedHeap::heap();
35 #ifdef ASSERT
36 if (sh->collector_policy()->should_clear_all_soft_refs()) {
37 assert(clear_all_softrefs, "Policy should have been checked earler");
38 }
39 #endif
34 // hook up weak ref data so it can be used during Mark-Sweep 40 // hook up weak ref data so it can be used during Mark-Sweep
35 assert(GenMarkSweep::ref_processor() == NULL, "no stomping"); 41 assert(GenMarkSweep::ref_processor() == NULL, "no stomping");
36 assert(rp != NULL, "should be non-NULL"); 42 assert(rp != NULL, "should be non-NULL");
37 GenMarkSweep::_ref_processor = rp; 43 GenMarkSweep::_ref_processor = rp;
38 rp->setup_policy(clear_all_softrefs); 44 rp->setup_policy(clear_all_softrefs);
42 CodeCache::gc_prologue(); 48 CodeCache::gc_prologue();
43 Threads::gc_prologue(); 49 Threads::gc_prologue();
44 50
45 // Increment the invocation count for the permanent generation, since it is 51 // Increment the invocation count for the permanent generation, since it is
46 // implicitly collected whenever we do a full mark sweep collection. 52 // implicitly collected whenever we do a full mark sweep collection.
47 SharedHeap* sh = SharedHeap::heap();
48 sh->perm_gen()->stat_record()->invocations++; 53 sh->perm_gen()->stat_record()->invocations++;
49 54
50 bool marked_for_unloading = false; 55 bool marked_for_unloading = false;
51 56
52 allocate_stacks(); 57 allocate_stacks();