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comparison src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp @ 10288:eba99d16dc6f

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8007763: Refactoring: split up compute_generation_free_space() into two functions for class PSAdaptiveSizePolicy Summary: split up compute_generation_free_space() into two functions: compute_eden_space_size() + compute_old_gen_free_space(), each of which (if needed) can be reused without executing an overhead of the other. Reviewed-by: jmasa, tschatzl Contributed-by: tamao <tao.mao@oracle.com>
author tamao
date Wed, 15 May 2013 10:41:22 -0700
parents 4868caa99ecf
children 001ec9515f84
comparison
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10287:12f651e29f6b 10288:eba99d16dc6f
1 /* 1 /*
2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2005, 2013, 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.
2082 // Calculate optimal free space amounts 2082 // Calculate optimal free space amounts
2083 assert(young_gen->max_size() > 2083 assert(young_gen->max_size() >
2084 young_gen->from_space()->capacity_in_bytes() + 2084 young_gen->from_space()->capacity_in_bytes() +
2085 young_gen->to_space()->capacity_in_bytes(), 2085 young_gen->to_space()->capacity_in_bytes(),
2086 "Sizes of space in young gen are out-of-bounds"); 2086 "Sizes of space in young gen are out-of-bounds");
2087
2088 size_t young_live = young_gen->used_in_bytes();
2089 size_t eden_live = young_gen->eden_space()->used_in_bytes();
2090 size_t old_live = old_gen->used_in_bytes();
2091 size_t cur_eden = young_gen->eden_space()->capacity_in_bytes();
2092 size_t max_old_gen_size = old_gen->max_gen_size();
2087 size_t max_eden_size = young_gen->max_size() - 2093 size_t max_eden_size = young_gen->max_size() -
2088 young_gen->from_space()->capacity_in_bytes() - 2094 young_gen->from_space()->capacity_in_bytes() -
2089 young_gen->to_space()->capacity_in_bytes(); 2095 young_gen->to_space()->capacity_in_bytes();
2090 size_policy->compute_generation_free_space( 2096
2091 young_gen->used_in_bytes(), 2097 // Used for diagnostics
2092 young_gen->eden_space()->used_in_bytes(), 2098 size_policy->clear_generation_free_space_flags();
2093 old_gen->used_in_bytes(), 2099
2094 young_gen->eden_space()->capacity_in_bytes(), 2100 size_policy->compute_generation_free_space(young_live,
2095 old_gen->max_gen_size(), 2101 eden_live,
2096 max_eden_size, 2102 old_live,
2097 true /* full gc*/, 2103 cur_eden,
2098 gc_cause, 2104 max_old_gen_size,
2099 heap->collector_policy()); 2105 max_eden_size,
2106 true /* full gc*/);
2107
2108 size_policy->check_gc_overhead_limit(young_live,
2109 eden_live,
2110 max_old_gen_size,
2111 max_eden_size,
2112 true /* full gc*/,
2113 gc_cause,
2114 heap->collector_policy());
2115
2116 size_policy->decay_supplemental_growth(true /* full gc*/);
2100 2117
2101 heap->resize_old_gen( 2118 heap->resize_old_gen(
2102 size_policy->calculated_old_free_size_in_bytes()); 2119 size_policy->calculated_old_free_size_in_bytes());
2103 2120
2104 // Don't resize the young generation at an major collection. A 2121 // Don't resize the young generation at an major collection. A