author | tschatzl |
Tue, 29 May 2018 09:26:00 +0200 | |
changeset 50605 | 7f63c74f0974 |
parent 49734 | f946776e9354 |
child 51332 | c25572739e7c |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "gc/shared/adaptiveSizePolicy.hpp" |
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#include "gc/shared/cardTableRS.hpp" |
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#include "gc/shared/collectorPolicy.hpp" |
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#include "gc/shared/gcLocker.hpp" |
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#include "gc/shared/gcPolicyCounters.hpp" |
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#include "gc/shared/generationSpec.hpp" |
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#include "gc/shared/space.hpp" |
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#include "gc/shared/vmGCOperations.hpp" |
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#include "logging/log.hpp" |
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#include "memory/universe.hpp" |
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#include "runtime/arguments.hpp" |
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#include "runtime/globals_extension.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "runtime/java.hpp" |
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#include "runtime/thread.inline.hpp" |
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#include "runtime/vmThread.hpp" |
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#include "utilities/align.hpp" |
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#include "utilities/macros.hpp" |
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// CollectorPolicy methods |
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|
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CollectorPolicy::CollectorPolicy() : |
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_space_alignment(0), |
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_heap_alignment(0), |
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_initial_heap_byte_size(InitialHeapSize), |
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_max_heap_byte_size(MaxHeapSize), |
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_min_heap_byte_size(Arguments::min_heap_size()) |
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{} |
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#ifdef ASSERT |
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void CollectorPolicy::assert_flags() { |
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assert(InitialHeapSize <= MaxHeapSize, "Ergonomics decided on incompatible initial and maximum heap sizes"); |
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assert(InitialHeapSize % _heap_alignment == 0, "InitialHeapSize alignment"); |
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assert(MaxHeapSize % _heap_alignment == 0, "MaxHeapSize alignment"); |
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} |
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void CollectorPolicy::assert_size_info() { |
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assert(InitialHeapSize == _initial_heap_byte_size, "Discrepancy between InitialHeapSize flag and local storage"); |
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assert(MaxHeapSize == _max_heap_byte_size, "Discrepancy between MaxHeapSize flag and local storage"); |
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assert(_max_heap_byte_size >= _min_heap_byte_size, "Ergonomics decided on incompatible minimum and maximum heap sizes"); |
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assert(_initial_heap_byte_size >= _min_heap_byte_size, "Ergonomics decided on incompatible initial and minimum heap sizes"); |
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assert(_max_heap_byte_size >= _initial_heap_byte_size, "Ergonomics decided on incompatible initial and maximum heap sizes"); |
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assert(_min_heap_byte_size % _heap_alignment == 0, "min_heap_byte_size alignment"); |
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assert(_initial_heap_byte_size % _heap_alignment == 0, "initial_heap_byte_size alignment"); |
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assert(_max_heap_byte_size % _heap_alignment == 0, "max_heap_byte_size alignment"); |
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} |
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#endif // ASSERT |
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void CollectorPolicy::initialize_flags() { |
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assert(_space_alignment != 0, "Space alignment not set up properly"); |
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assert(_heap_alignment != 0, "Heap alignment not set up properly"); |
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assert(_heap_alignment >= _space_alignment, |
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"heap_alignment: " SIZE_FORMAT " less than space_alignment: " SIZE_FORMAT, |
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_heap_alignment, _space_alignment); |
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assert(_heap_alignment % _space_alignment == 0, |
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"heap_alignment: " SIZE_FORMAT " not aligned by space_alignment: " SIZE_FORMAT, |
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_heap_alignment, _space_alignment); |
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|
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if (FLAG_IS_CMDLINE(MaxHeapSize)) { |
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if (FLAG_IS_CMDLINE(InitialHeapSize) && InitialHeapSize > MaxHeapSize) { |
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vm_exit_during_initialization("Initial heap size set to a larger value than the maximum heap size"); |
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} |
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if (_min_heap_byte_size != 0 && MaxHeapSize < _min_heap_byte_size) { |
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vm_exit_during_initialization("Incompatible minimum and maximum heap sizes specified"); |
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} |
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} |
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// Check heap parameter properties |
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if (MaxHeapSize < 2 * M) { |
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vm_exit_during_initialization("Too small maximum heap"); |
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} |
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if (InitialHeapSize < M) { |
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vm_exit_during_initialization("Too small initial heap"); |
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} |
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if (_min_heap_byte_size < M) { |
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vm_exit_during_initialization("Too small minimum heap"); |
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} |
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// User inputs from -Xmx and -Xms must be aligned |
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_min_heap_byte_size = align_up(_min_heap_byte_size, _heap_alignment); |
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size_t aligned_initial_heap_size = align_up(InitialHeapSize, _heap_alignment); |
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size_t aligned_max_heap_size = align_up(MaxHeapSize, _heap_alignment); |
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// Write back to flags if the values changed |
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if (aligned_initial_heap_size != InitialHeapSize) { |
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FLAG_SET_ERGO(size_t, InitialHeapSize, aligned_initial_heap_size); |
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} |
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if (aligned_max_heap_size != MaxHeapSize) { |
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FLAG_SET_ERGO(size_t, MaxHeapSize, aligned_max_heap_size); |
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} |
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if (FLAG_IS_CMDLINE(InitialHeapSize) && _min_heap_byte_size != 0 && |
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InitialHeapSize < _min_heap_byte_size) { |
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vm_exit_during_initialization("Incompatible minimum and initial heap sizes specified"); |
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} |
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if (!FLAG_IS_DEFAULT(InitialHeapSize) && InitialHeapSize > MaxHeapSize) { |
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FLAG_SET_ERGO(size_t, MaxHeapSize, InitialHeapSize); |
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} else if (!FLAG_IS_DEFAULT(MaxHeapSize) && InitialHeapSize > MaxHeapSize) { |
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FLAG_SET_ERGO(size_t, InitialHeapSize, MaxHeapSize); |
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if (InitialHeapSize < _min_heap_byte_size) { |
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_min_heap_byte_size = InitialHeapSize; |
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} |
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} |
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|
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_initial_heap_byte_size = InitialHeapSize; |
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_max_heap_byte_size = MaxHeapSize; |
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|
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FLAG_SET_ERGO(size_t, MinHeapDeltaBytes, align_up(MinHeapDeltaBytes, _space_alignment)); |
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DEBUG_ONLY(CollectorPolicy::assert_flags();) |
1 | 136 |
} |
137 |
||
138 |
void CollectorPolicy::initialize_size_info() { |
|
35061 | 139 |
log_debug(gc, heap)("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " Maximum heap " SIZE_FORMAT, |
140 |
_min_heap_byte_size, _initial_heap_byte_size, _max_heap_byte_size); |
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141 |
|
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DEBUG_ONLY(CollectorPolicy::assert_size_info();) |
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} |
144 |
||
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size_t CollectorPolicy::compute_heap_alignment() { |
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// The card marking array and the offset arrays for old generations are |
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// committed in os pages as well. Make sure they are entirely full (to |
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// avoid partial page problems), e.g. if 512 bytes heap corresponds to 1 |
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// byte entry and the os page size is 4096, the maximum heap size should |
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// be 512*4096 = 2MB aligned. |
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151 |
|
33212 | 152 |
size_t alignment = CardTableRS::ct_max_alignment_constraint(); |
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153 |
|
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if (UseLargePages) { |
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// In presence of large pages we have to make sure that our |
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// alignment is large page aware. |
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alignment = lcm(os::large_page_size(), alignment); |
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158 |
} |
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159 |
|
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return alignment; |
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161 |
} |
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|
22551 | 163 |
// GenCollectorPolicy methods |
1 | 164 |
|
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GenCollectorPolicy::GenCollectorPolicy() : |
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_min_young_size(0), |
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_initial_young_size(0), |
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_max_young_size(0), |
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_min_old_size(0), |
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_initial_old_size(0), |
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_max_old_size(0), |
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_gen_alignment(0) |
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{} |
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174 |
|
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size_t GenCollectorPolicy::scale_by_NewRatio_aligned(size_t base_size) { |
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return align_down_bounded(base_size / (NewRatio + 1), _gen_alignment); |
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} |
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178 |
|
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size_t GenCollectorPolicy::bound_minus_alignment(size_t desired_size, |
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size_t maximum_size) { |
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size_t max_minus = maximum_size - _gen_alignment; |
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return desired_size < max_minus ? desired_size : max_minus; |
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183 |
} |
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184 |
|
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185 |
size_t GenCollectorPolicy::young_gen_size_lower_bound() { |
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// The young generation must be aligned and have room for eden + two survivors |
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return align_up(3 * _space_alignment, _gen_alignment); |
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188 |
} |
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189 |
|
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190 |
size_t GenCollectorPolicy::old_gen_size_lower_bound() { |
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return align_up(_space_alignment, _gen_alignment); |
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192 |
} |
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193 |
|
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194 |
#ifdef ASSERT |
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195 |
void GenCollectorPolicy::assert_flags() { |
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CollectorPolicy::assert_flags(); |
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assert(NewSize >= _min_young_size, "Ergonomics decided on a too small young gen size"); |
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assert(NewSize <= MaxNewSize, "Ergonomics decided on incompatible initial and maximum young gen sizes"); |
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199 |
assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize, "Ergonomics decided on incompatible maximum young gen and heap sizes"); |
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200 |
assert(NewSize % _gen_alignment == 0, "NewSize alignment"); |
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201 |
assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize % _gen_alignment == 0, "MaxNewSize alignment"); |
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202 |
assert(OldSize + NewSize <= MaxHeapSize, "Ergonomics decided on incompatible generation and heap sizes"); |
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203 |
assert(OldSize % _gen_alignment == 0, "OldSize alignment"); |
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204 |
} |
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205 |
|
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206 |
void GenCollectorPolicy::assert_size_info() { |
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207 |
CollectorPolicy::assert_size_info(); |
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208 |
// GenCollectorPolicy::initialize_size_info may update the MaxNewSize |
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209 |
assert(MaxNewSize < MaxHeapSize, "Ergonomics decided on incompatible maximum young and heap sizes"); |
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210 |
assert(NewSize == _initial_young_size, "Discrepancy between NewSize flag and local storage"); |
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211 |
assert(MaxNewSize == _max_young_size, "Discrepancy between MaxNewSize flag and local storage"); |
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212 |
assert(OldSize == _initial_old_size, "Discrepancy between OldSize flag and local storage"); |
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213 |
assert(_min_young_size <= _initial_young_size, "Ergonomics decided on incompatible minimum and initial young gen sizes"); |
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214 |
assert(_initial_young_size <= _max_young_size, "Ergonomics decided on incompatible initial and maximum young gen sizes"); |
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215 |
assert(_min_young_size % _gen_alignment == 0, "_min_young_size alignment"); |
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216 |
assert(_initial_young_size % _gen_alignment == 0, "_initial_young_size alignment"); |
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217 |
assert(_max_young_size % _gen_alignment == 0, "_max_young_size alignment"); |
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218 |
assert(_min_young_size <= bound_minus_alignment(_min_young_size, _min_heap_byte_size), |
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219 |
"Ergonomics made minimum young generation larger than minimum heap"); |
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220 |
assert(_initial_young_size <= bound_minus_alignment(_initial_young_size, _initial_heap_byte_size), |
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221 |
"Ergonomics made initial young generation larger than initial heap"); |
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222 |
assert(_max_young_size <= bound_minus_alignment(_max_young_size, _max_heap_byte_size), |
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223 |
"Ergonomics made maximum young generation lager than maximum heap"); |
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224 |
assert(_min_old_size <= _initial_old_size, "Ergonomics decided on incompatible minimum and initial old gen sizes"); |
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225 |
assert(_initial_old_size <= _max_old_size, "Ergonomics decided on incompatible initial and maximum old gen sizes"); |
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226 |
assert(_max_old_size % _gen_alignment == 0, "_max_old_size alignment"); |
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227 |
assert(_initial_old_size % _gen_alignment == 0, "_initial_old_size alignment"); |
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228 |
assert(_max_heap_byte_size <= (_max_young_size + _max_old_size), "Total maximum heap sizes must be sum of generation maximum sizes"); |
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229 |
assert(_min_young_size + _min_old_size <= _min_heap_byte_size, "Minimum generation sizes exceed minimum heap size"); |
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230 |
assert(_initial_young_size + _initial_old_size == _initial_heap_byte_size, "Initial generation sizes should match initial heap size"); |
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231 |
assert(_max_young_size + _max_old_size == _max_heap_byte_size, "Maximum generation sizes should match maximum heap size"); |
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232 |
} |
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233 |
#endif // ASSERT |
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234 |
|
1 | 235 |
void GenCollectorPolicy::initialize_flags() { |
236 |
CollectorPolicy::initialize_flags(); |
|
237 |
||
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238 |
assert(_gen_alignment != 0, "Generation alignment not set up properly"); |
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239 |
assert(_heap_alignment >= _gen_alignment, |
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240 |
"heap_alignment: " SIZE_FORMAT " less than gen_alignment: " SIZE_FORMAT, |
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241 |
_heap_alignment, _gen_alignment); |
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242 |
assert(_gen_alignment % _space_alignment == 0, |
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243 |
"gen_alignment: " SIZE_FORMAT " not aligned by space_alignment: " SIZE_FORMAT, |
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244 |
_gen_alignment, _space_alignment); |
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245 |
assert(_heap_alignment % _gen_alignment == 0, |
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246 |
"heap_alignment: " SIZE_FORMAT " not aligned by gen_alignment: " SIZE_FORMAT, |
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247 |
_heap_alignment, _gen_alignment); |
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248 |
|
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// All generational heaps have a young gen; handle those flags here |
1 | 250 |
|
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251 |
// Make sure the heap is large enough for two generations |
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252 |
size_t smallest_new_size = young_gen_size_lower_bound(); |
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size_t smallest_heap_size = align_up(smallest_new_size + old_gen_size_lower_bound(), |
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_heap_alignment); |
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if (MaxHeapSize < smallest_heap_size) { |
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FLAG_SET_ERGO(size_t, MaxHeapSize, smallest_heap_size); |
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_max_heap_byte_size = MaxHeapSize; |
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} |
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// If needed, synchronize _min_heap_byte size and _initial_heap_byte_size |
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260 |
if (_min_heap_byte_size < smallest_heap_size) { |
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261 |
_min_heap_byte_size = smallest_heap_size; |
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if (InitialHeapSize < _min_heap_byte_size) { |
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FLAG_SET_ERGO(size_t, InitialHeapSize, smallest_heap_size); |
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_initial_heap_byte_size = smallest_heap_size; |
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} |
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} |
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267 |
|
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// Make sure NewSize allows an old generation to fit even if set on the command line |
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if (FLAG_IS_CMDLINE(NewSize) && NewSize >= _initial_heap_byte_size) { |
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log_warning(gc, ergo)("NewSize was set larger than initial heap size, will use initial heap size."); |
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FLAG_SET_ERGO(size_t, NewSize, bound_minus_alignment(NewSize, _initial_heap_byte_size)); |
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272 |
} |
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273 |
|
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// Now take the actual NewSize into account. We will silently increase NewSize |
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// if the user specified a smaller or unaligned value. |
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size_t bounded_new_size = bound_minus_alignment(NewSize, MaxHeapSize); |
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bounded_new_size = MAX2(smallest_new_size, align_down(bounded_new_size, _gen_alignment)); |
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if (bounded_new_size != NewSize) { |
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FLAG_SET_ERGO(size_t, NewSize, bounded_new_size); |
1 | 280 |
} |
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281 |
_min_young_size = smallest_new_size; |
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282 |
_initial_young_size = NewSize; |
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283 |
|
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284 |
if (!FLAG_IS_DEFAULT(MaxNewSize)) { |
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285 |
if (MaxNewSize >= MaxHeapSize) { |
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286 |
// Make sure there is room for an old generation |
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size_t smaller_max_new_size = MaxHeapSize - _gen_alignment; |
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288 |
if (FLAG_IS_CMDLINE(MaxNewSize)) { |
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log_warning(gc, ergo)("MaxNewSize (" SIZE_FORMAT "k) is equal to or greater than the entire " |
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"heap (" SIZE_FORMAT "k). A new max generation size of " SIZE_FORMAT "k will be used.", |
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291 |
MaxNewSize/K, MaxHeapSize/K, smaller_max_new_size/K); |
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292 |
} |
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293 |
FLAG_SET_ERGO(size_t, MaxNewSize, smaller_max_new_size); |
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294 |
if (NewSize > MaxNewSize) { |
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FLAG_SET_ERGO(size_t, NewSize, MaxNewSize); |
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296 |
_initial_young_size = NewSize; |
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297 |
} |
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298 |
} else if (MaxNewSize < _initial_young_size) { |
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299 |
FLAG_SET_ERGO(size_t, MaxNewSize, _initial_young_size); |
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} else if (!is_aligned(MaxNewSize, _gen_alignment)) { |
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301 |
FLAG_SET_ERGO(size_t, MaxNewSize, align_down(MaxNewSize, _gen_alignment)); |
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302 |
} |
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303 |
_max_young_size = MaxNewSize; |
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304 |
} |
1 | 305 |
|
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306 |
if (NewSize > MaxNewSize) { |
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307 |
// At this point this should only happen if the user specifies a large NewSize and/or |
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308 |
// a small (but not too small) MaxNewSize. |
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309 |
if (FLAG_IS_CMDLINE(MaxNewSize)) { |
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310 |
log_warning(gc, ergo)("NewSize (" SIZE_FORMAT "k) is greater than the MaxNewSize (" SIZE_FORMAT "k). " |
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311 |
"A new max generation size of " SIZE_FORMAT "k will be used.", |
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312 |
NewSize/K, MaxNewSize/K, NewSize/K); |
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313 |
} |
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314 |
FLAG_SET_ERGO(size_t, MaxNewSize, NewSize); |
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315 |
_max_young_size = MaxNewSize; |
1 | 316 |
} |
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317 |
|
1 | 318 |
if (SurvivorRatio < 1 || NewRatio < 1) { |
20399 | 319 |
vm_exit_during_initialization("Invalid young gen ratio specified"); |
1 | 320 |
} |
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321 |
|
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322 |
if (OldSize < old_gen_size_lower_bound()) { |
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323 |
FLAG_SET_ERGO(size_t, OldSize, old_gen_size_lower_bound()); |
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324 |
} |
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325 |
if (!is_aligned(OldSize, _gen_alignment)) { |
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326 |
FLAG_SET_ERGO(size_t, OldSize, align_down(OldSize, _gen_alignment)); |
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327 |
} |
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|
328 |
|
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329 |
if (FLAG_IS_CMDLINE(OldSize) && FLAG_IS_DEFAULT(MaxHeapSize)) { |
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330 |
// NewRatio will be used later to set the young generation size so we use |
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331 |
// it to calculate how big the heap should be based on the requested OldSize |
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332 |
// and NewRatio. |
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|
333 |
assert(NewRatio > 0, "NewRatio should have been set up earlier"); |
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|
334 |
size_t calculated_heapsize = (OldSize / NewRatio) * (NewRatio + 1); |
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|
335 |
|
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336 |
calculated_heapsize = align_up(calculated_heapsize, _heap_alignment); |
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337 |
FLAG_SET_ERGO(size_t, MaxHeapSize, calculated_heapsize); |
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|
338 |
_max_heap_byte_size = MaxHeapSize; |
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|
339 |
FLAG_SET_ERGO(size_t, InitialHeapSize, calculated_heapsize); |
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340 |
_initial_heap_byte_size = InitialHeapSize; |
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341 |
} |
1 | 342 |
|
22551 | 343 |
// Adjust NewSize and OldSize or MaxHeapSize to match each other |
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|
344 |
if (NewSize + OldSize > MaxHeapSize) { |
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345 |
if (FLAG_IS_CMDLINE(MaxHeapSize)) { |
22551 | 346 |
// Somebody has set a maximum heap size with the intention that we should not |
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347 |
// exceed it. Adjust New/OldSize as necessary. |
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348 |
size_t calculated_size = NewSize + OldSize; |
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349 |
double shrink_factor = (double) MaxHeapSize / calculated_size; |
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350 |
size_t smaller_new_size = align_down((size_t)(NewSize * shrink_factor), _gen_alignment); |
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351 |
FLAG_SET_ERGO(size_t, NewSize, MAX2(young_gen_size_lower_bound(), smaller_new_size)); |
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352 |
_initial_young_size = NewSize; |
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353 |
|
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354 |
// OldSize is already aligned because above we aligned MaxHeapSize to |
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355 |
// _heap_alignment, and we just made sure that NewSize is aligned to |
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356 |
// _gen_alignment. In initialize_flags() we verified that _heap_alignment |
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357 |
// is a multiple of _gen_alignment. |
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358 |
FLAG_SET_ERGO(size_t, OldSize, MaxHeapSize - NewSize); |
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|
359 |
} else { |
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360 |
FLAG_SET_ERGO(size_t, MaxHeapSize, align_up(NewSize + OldSize, _heap_alignment)); |
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|
361 |
_max_heap_byte_size = MaxHeapSize; |
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|
362 |
} |
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|
363 |
} |
17389 | 364 |
|
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|
365 |
// Update NewSize, if possible, to avoid sizing the young gen too small when only |
23851
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366 |
// OldSize is set on the command line. |
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8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
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|
367 |
if (FLAG_IS_CMDLINE(OldSize) && !FLAG_IS_CMDLINE(NewSize)) { |
60303358c862
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|
368 |
if (OldSize < _initial_heap_byte_size) { |
60303358c862
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|
369 |
size_t new_size = _initial_heap_byte_size - OldSize; |
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|
370 |
// Need to compare against the flag value for max since _max_young_size |
23851
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|
371 |
// might not have been set yet. |
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|
372 |
if (new_size >= _min_young_size && new_size <= MaxNewSize) { |
29697
92501504191b
8074459: Flags handling memory sizes should be of type size_t
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29684
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changeset
|
373 |
FLAG_SET_ERGO(size_t, NewSize, new_size); |
24941
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|
374 |
_initial_young_size = NewSize; |
23851
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|
375 |
} |
60303358c862
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|
376 |
} |
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|
377 |
} |
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|
378 |
|
1 | 379 |
always_do_update_barrier = UseConcMarkSweepGC; |
380 |
||
24353
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8027643: Merge GenCollectorPolicy and TwoGenerationCollectorPolicy
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|
381 |
DEBUG_ONLY(GenCollectorPolicy::assert_flags();) |
1 | 382 |
} |
383 |
||
186
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|
384 |
// Values set on the command line win over any ergonomically |
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|
385 |
// set command line parameters. |
32e6c95f8d9b
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|
386 |
// Ergonomic choice of parameters are done before this |
32e6c95f8d9b
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diff
changeset
|
387 |
// method is called. Values for command line parameters such as NewSize |
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1
diff
changeset
|
388 |
// and MaxNewSize feed those ergonomic choices into this method. |
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diff
changeset
|
389 |
// This method makes the final generation sizings consistent with |
32e6c95f8d9b
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1
diff
changeset
|
390 |
// themselves and with overall heap sizings. |
32e6c95f8d9b
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1
diff
changeset
|
391 |
// In the absence of explicitly set command line flags, policies |
32e6c95f8d9b
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diff
changeset
|
392 |
// such as the use of NewRatio are used to size the generation. |
24353
148147d21135
8027643: Merge GenCollectorPolicy and TwoGenerationCollectorPolicy
jwilhelm
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diff
changeset
|
393 |
|
148147d21135
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jwilhelm
parents:
23851
diff
changeset
|
394 |
// Minimum sizes of the generations may be different than |
148147d21135
8027643: Merge GenCollectorPolicy and TwoGenerationCollectorPolicy
jwilhelm
parents:
23851
diff
changeset
|
395 |
// the initial sizes. An inconsistency is permitted here |
148147d21135
8027643: Merge GenCollectorPolicy and TwoGenerationCollectorPolicy
jwilhelm
parents:
23851
diff
changeset
|
396 |
// in the total size that can be specified explicitly by |
148147d21135
8027643: Merge GenCollectorPolicy and TwoGenerationCollectorPolicy
jwilhelm
parents:
23851
diff
changeset
|
397 |
// command line specification of OldSize and NewSize and |
148147d21135
8027643: Merge GenCollectorPolicy and TwoGenerationCollectorPolicy
jwilhelm
parents:
23851
diff
changeset
|
398 |
// also a command line specification of -Xms. Issue a warning |
148147d21135
8027643: Merge GenCollectorPolicy and TwoGenerationCollectorPolicy
jwilhelm
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23851
diff
changeset
|
399 |
// but allow the values to pass. |
1 | 400 |
void GenCollectorPolicy::initialize_size_info() { |
401 |
CollectorPolicy::initialize_size_info(); |
|
402 |
||
24941
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changeset
|
403 |
_initial_young_size = NewSize; |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
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parents:
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diff
changeset
|
404 |
_max_young_size = MaxNewSize; |
4ebbe176a7b1
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changeset
|
405 |
_initial_old_size = OldSize; |
186
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diff
changeset
|
406 |
|
24941
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changeset
|
407 |
// Determine maximum size of the young generation. |
186
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diff
changeset
|
408 |
|
24940
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changeset
|
409 |
if (FLAG_IS_DEFAULT(MaxNewSize)) { |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
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parents:
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changeset
|
410 |
_max_young_size = scale_by_NewRatio_aligned(_max_heap_byte_size); |
186
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diff
changeset
|
411 |
// Bound the maximum size by NewSize below (since it historically |
1 | 412 |
// would have been NewSize and because the NewRatio calculation could |
413 |
// yield a size that is too small) and bound it by MaxNewSize above. |
|
186
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changeset
|
414 |
// Ergonomics plays here by previously calculating the desired |
32e6c95f8d9b
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jmasa
parents:
1
diff
changeset
|
415 |
// NewSize and MaxNewSize. |
24941
4ebbe176a7b1
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changeset
|
416 |
_max_young_size = MIN2(MAX2(_max_young_size, _initial_young_size), MaxNewSize); |
186
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changeset
|
417 |
} |
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
418 |
|
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
419 |
// Given the maximum young size, determine the initial and |
4ebbe176a7b1
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parents:
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diff
changeset
|
420 |
// minimum young sizes. |
186
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diff
changeset
|
421 |
|
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
422 |
if (_max_heap_byte_size == _initial_heap_byte_size) { |
24940
c2b4c8e32c2f
8026396: Remove information duplication in the collector policy
jwilhelm
parents:
24424
diff
changeset
|
423 |
// The maximum and initial heap sizes are the same so the generation's |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
424 |
// initial size must be the same as it maximum size. Use NewSize as the |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
425 |
// size if set on command line. |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
426 |
_max_young_size = FLAG_IS_CMDLINE(NewSize) ? NewSize : _max_young_size; |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
427 |
_initial_young_size = _max_young_size; |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
428 |
|
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
429 |
// Also update the minimum size if min == initial == max. |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
430 |
if (_max_heap_byte_size == _min_heap_byte_size) { |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
431 |
_min_young_size = _max_young_size; |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
432 |
} |
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
433 |
} else { |
22776
d99c54477401
8033426: Scale initial NewSize using NewRatio if not set on command line
sjohanss
parents:
22551
diff
changeset
|
434 |
if (FLAG_IS_CMDLINE(NewSize)) { |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
435 |
// If NewSize is set on the command line, we should use it as |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
436 |
// the initial size, but make sure it is within the heap bounds. |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
437 |
_initial_young_size = |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
438 |
MIN2(_max_young_size, bound_minus_alignment(NewSize, _initial_heap_byte_size)); |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
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diff
changeset
|
439 |
_min_young_size = bound_minus_alignment(_initial_young_size, _min_heap_byte_size); |
186
32e6c95f8d9b
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jmasa
parents:
1
diff
changeset
|
440 |
} else { |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
441 |
// For the case where NewSize is not set on the command line, use |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
442 |
// NewRatio to size the initial generation size. Use the current |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
443 |
// NewSize as the floor, because if NewRatio is overly large, the resulting |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
444 |
// size can be too small. |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
445 |
_initial_young_size = |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
446 |
MIN2(_max_young_size, MAX2(scale_by_NewRatio_aligned(_initial_heap_byte_size), NewSize)); |
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
447 |
} |
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
448 |
} |
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
449 |
|
35061 | 450 |
log_trace(gc, heap)("1: Minimum young " SIZE_FORMAT " Initial young " SIZE_FORMAT " Maximum young " SIZE_FORMAT, |
451 |
_min_young_size, _initial_young_size, _max_young_size); |
|
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
452 |
|
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
453 |
// At this point the minimum, initial and maximum sizes |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
454 |
// of the overall heap and of the young generation have been determined. |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
455 |
// The maximum old size can be determined from the maximum young |
22551 | 456 |
// and maximum heap size since no explicit flags exist |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
457 |
// for setting the old generation maximum. |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
458 |
_max_old_size = MAX2(_max_heap_byte_size - _max_young_size, _gen_alignment); |
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
459 |
|
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
460 |
// If no explicit command line flag has been set for the |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
461 |
// old generation size, use what is left. |
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
462 |
if (!FLAG_IS_CMDLINE(OldSize)) { |
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
463 |
// The user has not specified any value but the ergonomics |
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
464 |
// may have chosen a value (which may or may not be consistent |
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
465 |
// with the overall heap size). In either case make |
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
466 |
// the minimum, maximum and initial sizes consistent |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
467 |
// with the young sizes and the overall heap sizes. |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
468 |
_min_old_size = _gen_alignment; |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
469 |
_initial_old_size = MIN2(_max_old_size, MAX2(_initial_heap_byte_size - _initial_young_size, _min_old_size)); |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
470 |
// _max_old_size has already been made consistent above. |
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
471 |
} else { |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
472 |
// OldSize has been explicitly set on the command line. Use it |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
473 |
// for the initial size but make sure the minimum allow a young |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
474 |
// generation to fit as well. |
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
475 |
// If the user has explicitly set an OldSize that is inconsistent |
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
476 |
// with other command line flags, issue a warning. |
22551 | 477 |
// The generation minimums and the overall heap minimum should |
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
478 |
// be within one generation alignment. |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
479 |
if (_initial_old_size > _max_old_size) { |
35521
3cb32806ed1d
8146990: Convert CollectorPolicy to use log_warning instead of warning
ehelin
parents:
35492
diff
changeset
|
480 |
log_warning(gc, ergo)("Inconsistency between maximum heap size and maximum " |
3cb32806ed1d
8146990: Convert CollectorPolicy to use log_warning instead of warning
ehelin
parents:
35492
diff
changeset
|
481 |
"generation sizes: using maximum heap = " SIZE_FORMAT |
3cb32806ed1d
8146990: Convert CollectorPolicy to use log_warning instead of warning
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35492
diff
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|
482 |
", -XX:OldSize flag is being ignored", |
3cb32806ed1d
8146990: Convert CollectorPolicy to use log_warning instead of warning
ehelin
parents:
35492
diff
changeset
|
483 |
_max_heap_byte_size); |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
484 |
_initial_old_size = _max_old_size; |
8687
264727307495
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
7419
diff
changeset
|
485 |
} |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
486 |
|
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
487 |
_min_old_size = MIN2(_initial_old_size, _min_heap_byte_size - _min_young_size); |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
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23224
diff
changeset
|
488 |
} |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
489 |
|
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
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changeset
|
490 |
// The initial generation sizes should match the initial heap size, |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
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parents:
23224
diff
changeset
|
491 |
// if not issue a warning and resize the generations. This behavior |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
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diff
changeset
|
492 |
// differs from JDK8 where the generation sizes have higher priority |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
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parents:
23224
diff
changeset
|
493 |
// than the initial heap size. |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
494 |
if ((_initial_old_size + _initial_young_size) != _initial_heap_byte_size) { |
35521
3cb32806ed1d
8146990: Convert CollectorPolicy to use log_warning instead of warning
ehelin
parents:
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diff
changeset
|
495 |
log_warning(gc, ergo)("Inconsistency between generation sizes and heap size, resizing " |
3cb32806ed1d
8146990: Convert CollectorPolicy to use log_warning instead of warning
ehelin
parents:
35492
diff
changeset
|
496 |
"the generations to fit the heap."); |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
497 |
|
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
498 |
size_t desired_young_size = _initial_heap_byte_size - _initial_old_size; |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
499 |
if (_initial_heap_byte_size < _initial_old_size) { |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
500 |
// Old want all memory, use minimum for young and rest for old |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
501 |
_initial_young_size = _min_young_size; |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
502 |
_initial_old_size = _initial_heap_byte_size - _min_young_size; |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
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diff
changeset
|
503 |
} else if (desired_young_size > _max_young_size) { |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
504 |
// Need to increase both young and old generation |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
505 |
_initial_young_size = _max_young_size; |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
506 |
_initial_old_size = _initial_heap_byte_size - _max_young_size; |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
507 |
} else if (desired_young_size < _min_young_size) { |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
508 |
// Need to decrease both young and old generation |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
509 |
_initial_young_size = _min_young_size; |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
510 |
_initial_old_size = _initial_heap_byte_size - _min_young_size; |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
511 |
} else { |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
512 |
// The young generation boundaries allow us to only update the |
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
513 |
// young generation. |
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
514 |
_initial_young_size = desired_young_size; |
1 | 515 |
} |
23851
60303358c862
8029186: regression-hotspot nightly failure: assert(FLAG_IS_DEFAULT(MaxNewSize) || MaxNewSize < MaxHeapSize) failed
sjohanss
parents:
23224
diff
changeset
|
516 |
|
35061 | 517 |
log_trace(gc, heap)("2: Minimum young " SIZE_FORMAT " Initial young " SIZE_FORMAT " Maximum young " SIZE_FORMAT, |
518 |
_min_young_size, _initial_young_size, _max_young_size); |
|
1 | 519 |
} |
22551 | 520 |
|
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
521 |
// Write back to flags if necessary. |
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
522 |
if (NewSize != _initial_young_size) { |
29697
92501504191b
8074459: Flags handling memory sizes should be of type size_t
jwilhelm
parents:
29684
diff
changeset
|
523 |
FLAG_SET_ERGO(size_t, NewSize, _initial_young_size); |
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
524 |
} |
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
525 |
|
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
526 |
if (MaxNewSize != _max_young_size) { |
29697
92501504191b
8074459: Flags handling memory sizes should be of type size_t
jwilhelm
parents:
29684
diff
changeset
|
527 |
FLAG_SET_ERGO(size_t, MaxNewSize, _max_young_size); |
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
528 |
} |
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
529 |
|
24941
4ebbe176a7b1
8042298: Remove the names gen0 and gen1 from the GC code
jwilhelm
parents:
24940
diff
changeset
|
530 |
if (OldSize != _initial_old_size) { |
29697
92501504191b
8074459: Flags handling memory sizes should be of type size_t
jwilhelm
parents:
29684
diff
changeset
|
531 |
FLAG_SET_ERGO(size_t, OldSize, _initial_old_size); |
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
532 |
} |
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
533 |
|
35061 | 534 |
log_trace(gc, heap)("Minimum old " SIZE_FORMAT " Initial old " SIZE_FORMAT " Maximum old " SIZE_FORMAT, |
535 |
_min_old_size, _initial_old_size, _max_old_size); |
|
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
536 |
|
24353
148147d21135
8027643: Merge GenCollectorPolicy and TwoGenerationCollectorPolicy
jwilhelm
parents:
23851
diff
changeset
|
537 |
DEBUG_ONLY(GenCollectorPolicy::assert_size_info();) |
1 | 538 |
} |
539 |
||
540 |
// |
|
541 |
// MarkSweepPolicy methods |
|
542 |
// |
|
543 |
||
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
544 |
void MarkSweepPolicy::initialize_alignments() { |
29697
92501504191b
8074459: Flags handling memory sizes should be of type size_t
jwilhelm
parents:
29684
diff
changeset
|
545 |
_space_alignment = _gen_alignment = (size_t)Generation::GenGrain; |
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
21560
diff
changeset
|
546 |
_heap_alignment = compute_heap_alignment(); |
1 | 547 |
} |