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comparison src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.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 12f651e29f6b
children 001ec9515f84
comparison
equal deleted inserted replaced
10287:12f651e29f6b 10288:eba99d16dc6f
1 /* 1 /*
2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2001, 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.
275 // Calculate optimal free space amounts 275 // Calculate optimal free space amounts
276 assert(young_gen->max_size() > 276 assert(young_gen->max_size() >
277 young_gen->from_space()->capacity_in_bytes() + 277 young_gen->from_space()->capacity_in_bytes() +
278 young_gen->to_space()->capacity_in_bytes(), 278 young_gen->to_space()->capacity_in_bytes(),
279 "Sizes of space in young gen are out-of-bounds"); 279 "Sizes of space in young gen are out-of-bounds");
280
281 size_t young_live = young_gen->used_in_bytes();
282 size_t eden_live = young_gen->eden_space()->used_in_bytes();
283 size_t old_live = old_gen->used_in_bytes();
284 size_t cur_eden = young_gen->eden_space()->capacity_in_bytes();
285 size_t max_old_gen_size = old_gen->max_gen_size();
280 size_t max_eden_size = young_gen->max_size() - 286 size_t max_eden_size = young_gen->max_size() -
281 young_gen->from_space()->capacity_in_bytes() - 287 young_gen->from_space()->capacity_in_bytes() -
282 young_gen->to_space()->capacity_in_bytes(); 288 young_gen->to_space()->capacity_in_bytes();
283 size_policy->compute_generation_free_space(young_gen->used_in_bytes(), 289
284 young_gen->eden_space()->used_in_bytes(), 290 // Used for diagnostics
285 old_gen->used_in_bytes(), 291 size_policy->clear_generation_free_space_flags();
286 young_gen->eden_space()->capacity_in_bytes(), 292
287 old_gen->max_gen_size(), 293 size_policy->compute_generation_free_space(young_live,
288 max_eden_size, 294 eden_live,
289 true /* full gc*/, 295 old_live,
290 gc_cause, 296 cur_eden,
291 heap->collector_policy()); 297 max_old_gen_size,
298 max_eden_size,
299 true /* full gc*/);
300
301 size_policy->check_gc_overhead_limit(young_live,
302 eden_live,
303 max_old_gen_size,
304 max_eden_size,
305 true /* full gc*/,
306 gc_cause,
307 heap->collector_policy());
308
309 size_policy->decay_supplemental_growth(true /* full gc*/);
292 310
293 heap->resize_old_gen(size_policy->calculated_old_free_size_in_bytes()); 311 heap->resize_old_gen(size_policy->calculated_old_free_size_in_bytes());
294 312
295 // Don't resize the young generation at an major collection. A 313 // Don't resize the young generation at an major collection. A
296 // desired young generation size may have been calculated but 314 // desired young generation size may have been calculated but