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comparison src/share/vm/gc_implementation/g1/heapRegionSeq.hpp @ 2149:7e37af9d69ef

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7011379: G1: overly long concurrent marking cycles Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads. Reviewed-by: johnc, ysr
author tonyp
date Wed, 19 Jan 2011 09:35:17 -0500
parents f95d63e2154a
children 0fa27f37d4d4
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2137:ffd725ff6943 2149:7e37af9d69ef
1 /* 1 /*
2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2001, 2011, 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.
104 // "num_regions_deleted" to the number of regions deleted. 104 // "num_regions_deleted" to the number of regions deleted.
105 MemRegion shrink_by(size_t shrink_bytes, size_t& num_regions_deleted); 105 MemRegion shrink_by(size_t shrink_bytes, size_t& num_regions_deleted);
106 106
107 // If "addr" falls within a region in the sequence, return that region, 107 // If "addr" falls within a region in the sequence, return that region,
108 // or else NULL. 108 // or else NULL.
109 HeapRegion* addr_to_region(const void* addr); 109 inline HeapRegion* addr_to_region(const void* addr);
110 110
111 void print(); 111 void print();
112 112
113 // Prints out runs of empty regions. 113 // Prints out runs of empty regions.
114 void print_empty_runs(); 114 void print_empty_runs();