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comparison src/share/vm/gc_implementation/concurrentMarkSweep/cmsPermGen.cpp @ 1839:e41cd7fd68a6

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6794422: Perm gen expansion policy for concurrent collectors Summary: Concurrent collectors should expand the perm gen without a full STW GC, but possibly by triggering a concurrent collection. Temporary band-aid for G1 where no concurrent collection is kicked off since the perm gen is not collected concurrently. Reviewed-by: johnc
author ysr
date Fri, 01 Oct 2010 16:12:54 -0700
parents c18cbe5936b8
children f95d63e2154a
comparison
equal deleted inserted replaced
1838:8f6f7587d292 1839:e41cd7fd68a6
1 /* 1 /*
2 * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. 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.
48 } else { 48 } else {
49 return mem_allocate_in_gen(size, _gen); 49 return mem_allocate_in_gen(size, _gen);
50 } 50 }
51 } 51 }
52 52
53 HeapWord* CMSPermGen::request_expand_and_allocate(Generation* gen,
54 size_t size,
55 GCCause::Cause prev_cause /* ignored */) {
56 HeapWord* obj = gen->expand_and_allocate(size, false);
57 if (gen->capacity() >= _capacity_expansion_limit) {
58 set_capacity_expansion_limit(gen->capacity() + MaxPermHeapExpansion);
59 assert(((ConcurrentMarkSweepGeneration*)gen)->should_concurrent_collect(),
60 "Should kick off a collection if one not in progress");
61 }
62 return obj;
63 }
64
53 void CMSPermGen::compute_new_size() { 65 void CMSPermGen::compute_new_size() {
54 _gen->compute_new_size(); 66 _gen->compute_new_size();
55 } 67 }
56 68
57 void CMSPermGenGen::initialize_performance_counters() { 69 void CMSPermGenGen::initialize_performance_counters() {