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comparison src/share/vm/gc_implementation/shared/vmGCOperations.hpp @ 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 c6c601a0f2d6
children c18cbe5936b8
comparison
equal deleted inserted replaced
1361:6b73e879f1c2 1387:0bfd3fb24150
1 /* 1 /*
2 * Copyright 2005-2008 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 2005-2010 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.
87 _gc_locked = false; 87 _gc_locked = false;
88 88
89 if (full) { 89 if (full) {
90 _full_gc_count_before = full_gc_count_before; 90 _full_gc_count_before = full_gc_count_before;
91 } 91 }
92 } 92 // In ParallelScavengeHeap::mem_allocate() collections can be
93 ~VM_GC_Operation() {} 93 // executed within a loop and _all_soft_refs_clear can be set
94 // true after they have been cleared by a collection and another
95 // collection started so that _all_soft_refs_clear can be true
96 // when this collection is started. Don't assert that
97 // _all_soft_refs_clear have to be false here even though
98 // mutators have run. Soft refs will be cleared again in this
99 // collection.
100 }
101 ~VM_GC_Operation() {
102 CollectedHeap* ch = Universe::heap();
103 ch->collector_policy()->set_all_soft_refs_clear(false);
104 }
94 105
95 // Acquire the reference synchronization lock 106 // Acquire the reference synchronization lock
96 virtual bool doit_prologue(); 107 virtual bool doit_prologue();
97 // Do notifyAll (if needed) and release held lock 108 // Do notifyAll (if needed) and release held lock
98 virtual void doit_epilogue(); 109 virtual void doit_epilogue();