truffle: src/share/vm/memory/collectorPolicy.cpp annotate

annotate src/share/vm/memory/collectorPolicy.cpp @ 14726:92aa6797d639

Backed out merge changeset: b51e29501f30 Backed out merge revision to its first parent (8f483e200405)

author	Doug Simon <doug.simon@oracle.com>
date	Mon, 24 Mar 2014 21:30:43 +0100
parents	bac9ef65b71d
children

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
8013 95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1387 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1387 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1387 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	26 #include "gc_implementation/shared/adaptiveSizePolicy.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	27 #include "gc_implementation/shared/gcPolicyCounters.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	28 #include "gc_implementation/shared/vmGCOperations.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	29 #include "memory/cardTableRS.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	30 #include "memory/collectorPolicy.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	31 #include "memory/gcLocker.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	32 #include "memory/genCollectedHeap.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	33 #include "memory/generationSpec.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	34 #include "memory/space.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	35 #include "memory/universe.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	36 #include "runtime/arguments.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	37 #include "runtime/globals_extension.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	38 #include "runtime/handles.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	39 #include "runtime/java.hpp"
7180 f34d701e952e 8003935: Simplify the needed includes for using Thread::current() stefank parents: 6923 diff changeset	40 #include "runtime/thread.inline.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	41 #include "runtime/vmThread.hpp"
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 7451 diff changeset	42 #include "utilities/macros.hpp"
db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 7451 diff changeset	43 #if INCLUDE_ALL_GCS
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	44 #include "gc_implementation/concurrentMarkSweep/cmsAdaptiveSizePolicy.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1888 diff changeset	45 #include "gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp"
8001 db9981fd3124 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS jprovino parents: 7451 diff changeset	46 #endif // INCLUDE_ALL_GCS
0 a61af66fc99e Initial load duke parents: diff changeset	47
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	48 // CollectorPolicy methods
0 a61af66fc99e Initial load duke parents: diff changeset	49
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	50 CollectorPolicy::CollectorPolicy() :
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	51 _space_alignment(0),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	52 _heap_alignment(0),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	53 _initial_heap_byte_size(InitialHeapSize),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	54 _max_heap_byte_size(MaxHeapSize),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	55 _min_heap_byte_size(Arguments::min_heap_size()),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	56 _max_heap_size_cmdline(false),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	57 _size_policy(NULL),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	58 _should_clear_all_soft_refs(false),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	59 _all_soft_refs_clear(false)
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	60 {}
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	61
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	62 #ifdef ASSERT
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	63 void CollectorPolicy::assert_flags() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	64 assert(InitialHeapSize <= MaxHeapSize, "Ergonomics decided on incompatible initial and maximum heap sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	65 assert(InitialHeapSize % _heap_alignment == 0, "InitialHeapSize alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	66 assert(MaxHeapSize % _heap_alignment == 0, "MaxHeapSize alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	67 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	68
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	69 void CollectorPolicy::assert_size_info() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	70 assert(InitialHeapSize == _initial_heap_byte_size, "Discrepancy between InitialHeapSize flag and local storage");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	71 assert(MaxHeapSize == _max_heap_byte_size, "Discrepancy between MaxHeapSize flag and local storage");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	72 assert(_max_heap_byte_size >= _min_heap_byte_size, "Ergonomics decided on incompatible minimum and maximum heap sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	73 assert(_initial_heap_byte_size >= _min_heap_byte_size, "Ergonomics decided on incompatible initial and minimum heap sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	74 assert(_max_heap_byte_size >= _initial_heap_byte_size, "Ergonomics decided on incompatible initial and maximum heap sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	75 assert(_min_heap_byte_size % _heap_alignment == 0, "min_heap_byte_size alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	76 assert(_initial_heap_byte_size % _heap_alignment == 0, "initial_heap_byte_size alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	77 assert(_max_heap_byte_size % _heap_alignment == 0, "max_heap_byte_size alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	78 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	79 #endif // ASSERT
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	80
0 a61af66fc99e Initial load duke parents: diff changeset	81 void CollectorPolicy::initialize_flags() {
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	82 assert(_space_alignment != 0, "Space alignment not set up properly");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	83 assert(_heap_alignment != 0, "Heap alignment not set up properly");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	84 assert(_heap_alignment >= _space_alignment,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	85 err_msg("heap_alignment: " SIZE_FORMAT " less than space_alignment: " SIZE_FORMAT,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	86 _heap_alignment, _space_alignment));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	87 assert(_heap_alignment % _space_alignment == 0,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	88 err_msg("heap_alignment: " SIZE_FORMAT " not aligned by space_alignment: " SIZE_FORMAT,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	89 _heap_alignment, _space_alignment));
10239 f14063dcd52a 8013791: G1: G1CollectorPolicy::initialize_flags() may set min_alignment > max_alignment brutisso parents: 10135 diff changeset	90
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	91 if (FLAG_IS_CMDLINE(MaxHeapSize)) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	92 if (FLAG_IS_CMDLINE(InitialHeapSize) && InitialHeapSize > MaxHeapSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	93 vm_exit_during_initialization("Initial heap size set to a larger value than the maximum heap size");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	94 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	95 if (_min_heap_byte_size != 0 && MaxHeapSize < _min_heap_byte_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	96 vm_exit_during_initialization("Incompatible minimum and maximum heap sizes specified");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	97 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	98 _max_heap_size_cmdline = true;
10241 d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	99 }
d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	100
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	101 // Check heap parameter properties
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	102 if (InitialHeapSize < M) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	103 vm_exit_during_initialization("Too small initial heap");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	104 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	105 if (_min_heap_byte_size < M) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	106 vm_exit_during_initialization("Too small minimum heap");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	107 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	108
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	109 // User inputs from -Xmx and -Xms must be aligned
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	110 _min_heap_byte_size = align_size_up(_min_heap_byte_size, _heap_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	111 uintx aligned_initial_heap_size = align_size_up(InitialHeapSize, _heap_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	112 uintx aligned_max_heap_size = align_size_up(MaxHeapSize, _heap_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	113
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	114 // Write back to flags if the values changed
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	115 if (aligned_initial_heap_size != InitialHeapSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	116 FLAG_SET_ERGO(uintx, InitialHeapSize, aligned_initial_heap_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	117 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	118 if (aligned_max_heap_size != MaxHeapSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	119 FLAG_SET_ERGO(uintx, MaxHeapSize, aligned_max_heap_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	120 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	121
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	122 if (FLAG_IS_CMDLINE(InitialHeapSize) && _min_heap_byte_size != 0 &&
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	123 InitialHeapSize < _min_heap_byte_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	124 vm_exit_during_initialization("Incompatible minimum and initial heap sizes specified");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	125 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	126 if (!FLAG_IS_DEFAULT(InitialHeapSize) && InitialHeapSize > MaxHeapSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	127 FLAG_SET_ERGO(uintx, MaxHeapSize, InitialHeapSize);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	128 } else if (!FLAG_IS_DEFAULT(MaxHeapSize) && InitialHeapSize > MaxHeapSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	129 FLAG_SET_ERGO(uintx, InitialHeapSize, MaxHeapSize);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	130 if (InitialHeapSize < _min_heap_byte_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	131 _min_heap_byte_size = InitialHeapSize;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	132 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	133 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	134
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	135 _initial_heap_byte_size = InitialHeapSize;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	136 _max_heap_byte_size = MaxHeapSize;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	137
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	138 FLAG_SET_ERGO(uintx, MinHeapDeltaBytes, align_size_up(MinHeapDeltaBytes, _space_alignment));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	139
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	140 DEBUG_ONLY(CollectorPolicy::assert_flags();)
0 a61af66fc99e Initial load duke parents: diff changeset	141 }
a61af66fc99e Initial load duke parents: diff changeset	142
a61af66fc99e Initial load duke parents: diff changeset	143 void CollectorPolicy::initialize_size_info() {
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	144 if (PrintGCDetails && Verbose) {
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	145 gclog_or_tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	146 SIZE_FORMAT " Maximum heap " SIZE_FORMAT,
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	147 _min_heap_byte_size, _initial_heap_byte_size, _max_heap_byte_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	148 }
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	149
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	150 DEBUG_ONLY(CollectorPolicy::assert_size_info();)
0 a61af66fc99e Initial load duke parents: diff changeset	151 }
a61af66fc99e Initial load duke parents: diff changeset	152
1387 0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	153 bool CollectorPolicy::use_should_clear_all_soft_refs(bool v) {
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	154 bool result = _should_clear_all_soft_refs;
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	155 set_should_clear_all_soft_refs(false);
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	156 return result;
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	157 }
0 a61af66fc99e Initial load duke parents: diff changeset	158
a61af66fc99e Initial load duke parents: diff changeset	159 GenRemSet* CollectorPolicy::create_rem_set(MemRegion whole_heap,
a61af66fc99e Initial load duke parents: diff changeset	160 int max_covered_regions) {
12350 ab68fc0101ce 8025855: Simplify GenRemSet code slightly jwilhelm parents: 12346 diff changeset	161 return new CardTableRS(whole_heap, max_covered_regions);
0 a61af66fc99e Initial load duke parents: diff changeset	162 }
a61af66fc99e Initial load duke parents: diff changeset	163
1387 0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	164 void CollectorPolicy::cleared_all_soft_refs() {
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	165 // If near gc overhear limit, continue to clear SoftRefs. SoftRefs may
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	166 // have been cleared in the last collection but if the gc overhear
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	167 // limit continues to be near, SoftRefs should still be cleared.
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	168 if (size_policy() != NULL) {
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	169 _should_clear_all_soft_refs = size_policy()->gc_overhead_limit_near();
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	170 }
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	171 _all_soft_refs_clear = true;
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	172 }
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	173
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	174 size_t CollectorPolicy::compute_heap_alignment() {
12233 40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	175 // The card marking array and the offset arrays for old generations are
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	176 // committed in os pages as well. Make sure they are entirely full (to
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	177 // avoid partial page problems), e.g. if 512 bytes heap corresponds to 1
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	178 // byte entry and the os page size is 4096, the maximum heap size should
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	179 // be 512*4096 = 2MB aligned.
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	180
14306 284953caf7aa 8031776: Remove the unnecessary enum GenRemSet::Name ehelin parents: 13066 diff changeset	181 size_t alignment = GenRemSet::max_alignment_constraint();
12233 40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	182
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	183 // Parallel GC does its own alignment of the generations to avoid requiring a
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	184 // large page (256M on some platforms) for the permanent generation. The
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	185 // other collectors should also be updated to do their own alignment and then
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	186 // this use of lcm() should be removed.
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	187 if (UseLargePages && !UseParallelGC) {
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	188 // In presence of large pages we have to make sure that our
12233 40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	189 // alignment is large page aware
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	190 alignment = lcm(os::large_page_size(), alignment);
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	191 }
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	192
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	193 return alignment;
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12110 diff changeset	194 }
1387 0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	195
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	196 // GenCollectorPolicy methods
0 a61af66fc99e Initial load duke parents: diff changeset	197
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	198 GenCollectorPolicy::GenCollectorPolicy() :
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	199 _min_gen0_size(0),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	200 _initial_gen0_size(0),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	201 _max_gen0_size(0),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	202 _gen_alignment(0),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	203 _generations(NULL)
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	204 {}
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	205
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	206 size_t GenCollectorPolicy::scale_by_NewRatio_aligned(size_t base_size) {
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	207 return align_size_down_bounded(base_size / (NewRatio + 1), _gen_alignment);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	208 }
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	209
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	210 size_t GenCollectorPolicy::bound_minus_alignment(size_t desired_size,
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	211 size_t maximum_size) {
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	212 size_t max_minus = maximum_size - _gen_alignment;
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	213 return desired_size < max_minus ? desired_size : max_minus;
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	214 }
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	215
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	216
0 a61af66fc99e Initial load duke parents: diff changeset	217 void GenCollectorPolicy::initialize_size_policy(size_t init_eden_size,
a61af66fc99e Initial load duke parents: diff changeset	218 size_t init_promo_size,
a61af66fc99e Initial load duke parents: diff changeset	219 size_t init_survivor_size) {
13059 46d7652b223c 8026853: Prepare GC code for collector policy regression fix jwilhelm parents: 13058 diff changeset	220 const double max_gc_pause_sec = ((double) MaxGCPauseMillis) / 1000.0;
0 a61af66fc99e Initial load duke parents: diff changeset	221 _size_policy = new AdaptiveSizePolicy(init_eden_size,
a61af66fc99e Initial load duke parents: diff changeset	222 init_promo_size,
a61af66fc99e Initial load duke parents: diff changeset	223 init_survivor_size,
8072 fd7b3770c77e 8007764: Wrong initialized value of max_gc_pause_sec for an instance of class AdaptiveSizePolicy tamao parents: 8016 diff changeset	224 max_gc_pause_sec,
0 a61af66fc99e Initial load duke parents: diff changeset	225 GCTimeRatio);
a61af66fc99e Initial load duke parents: diff changeset	226 }
a61af66fc99e Initial load duke parents: diff changeset	227
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	228 size_t GenCollectorPolicy::young_gen_size_lower_bound() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	229 // The young generation must be aligned and have room for eden + two survivors
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	230 return align_size_up(3 * _space_alignment, _gen_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	231 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	232
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	233 #ifdef ASSERT
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	234 void GenCollectorPolicy::assert_flags() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	235 CollectorPolicy::assert_flags();
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	236 assert(NewSize >= _min_gen0_size, "Ergonomics decided on a too small young gen size");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	237 assert(NewSize <= MaxNewSize, "Ergonomics decided on incompatible initial and maximum young gen sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	238 assert(FLAG_IS_DEFAULT(MaxNewSize) \|\| MaxNewSize < MaxHeapSize, "Ergonomics decided on incompatible maximum young gen and heap sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	239 assert(NewSize % _gen_alignment == 0, "NewSize alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	240 assert(FLAG_IS_DEFAULT(MaxNewSize) \|\| MaxNewSize % _gen_alignment == 0, "MaxNewSize alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	241 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	242
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	243 void TwoGenerationCollectorPolicy::assert_flags() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	244 GenCollectorPolicy::assert_flags();
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	245 assert(OldSize + NewSize <= MaxHeapSize, "Ergonomics decided on incompatible generation and heap sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	246 assert(OldSize % _gen_alignment == 0, "OldSize alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	247 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	248
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	249 void GenCollectorPolicy::assert_size_info() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	250 CollectorPolicy::assert_size_info();
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	251 // GenCollectorPolicy::initialize_size_info may update the MaxNewSize
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	252 assert(MaxNewSize < MaxHeapSize, "Ergonomics decided on incompatible maximum young and heap sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	253 assert(NewSize == _initial_gen0_size, "Discrepancy between NewSize flag and local storage");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	254 assert(MaxNewSize == _max_gen0_size, "Discrepancy between MaxNewSize flag and local storage");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	255 assert(_min_gen0_size <= _initial_gen0_size, "Ergonomics decided on incompatible minimum and initial young gen sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	256 assert(_initial_gen0_size <= _max_gen0_size, "Ergonomics decided on incompatible initial and maximum young gen sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	257 assert(_min_gen0_size % _gen_alignment == 0, "_min_gen0_size alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	258 assert(_initial_gen0_size % _gen_alignment == 0, "_initial_gen0_size alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	259 assert(_max_gen0_size % _gen_alignment == 0, "_max_gen0_size alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	260 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	261
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	262 void TwoGenerationCollectorPolicy::assert_size_info() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	263 GenCollectorPolicy::assert_size_info();
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	264 assert(OldSize == _initial_gen1_size, "Discrepancy between OldSize flag and local storage");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	265 assert(_min_gen1_size <= _initial_gen1_size, "Ergonomics decided on incompatible minimum and initial old gen sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	266 assert(_initial_gen1_size <= _max_gen1_size, "Ergonomics decided on incompatible initial and maximum old gen sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	267 assert(_max_gen1_size % _gen_alignment == 0, "_max_gen1_size alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	268 assert(_initial_gen1_size % _gen_alignment == 0, "_initial_gen1_size alignment");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	269 assert(_max_heap_byte_size <= (_max_gen0_size + _max_gen1_size), "Total maximum heap sizes must be sum of generation maximum sizes");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	270 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	271 #endif // ASSERT
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	272
0 a61af66fc99e Initial load duke parents: diff changeset	273 void GenCollectorPolicy::initialize_flags() {
a61af66fc99e Initial load duke parents: diff changeset	274 CollectorPolicy::initialize_flags();
a61af66fc99e Initial load duke parents: diff changeset	275
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	276 assert(_gen_alignment != 0, "Generation alignment not set up properly");
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	277 assert(_heap_alignment >= _gen_alignment,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	278 err_msg("heap_alignment: " SIZE_FORMAT " less than gen_alignment: " SIZE_FORMAT,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	279 _heap_alignment, _gen_alignment));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	280 assert(_gen_alignment % _space_alignment == 0,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	281 err_msg("gen_alignment: " SIZE_FORMAT " not aligned by space_alignment: " SIZE_FORMAT,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	282 _gen_alignment, _space_alignment));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	283 assert(_heap_alignment % _gen_alignment == 0,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	284 err_msg("heap_alignment: " SIZE_FORMAT " not aligned by gen_alignment: " SIZE_FORMAT,
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	285 _heap_alignment, _gen_alignment));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	286
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	287 // All generational heaps have a youngest gen; handle those flags here
0 a61af66fc99e Initial load duke parents: diff changeset	288
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	289 // Make sure the heap is large enough for two generations
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	290 uintx smallest_new_size = young_gen_size_lower_bound();
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	291 uintx smallest_heap_size = align_size_up(smallest_new_size + align_size_up(_space_alignment, _gen_alignment),
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	292 _heap_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	293 if (MaxHeapSize < smallest_heap_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	294 FLAG_SET_ERGO(uintx, MaxHeapSize, smallest_heap_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	295 _max_heap_byte_size = MaxHeapSize;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	296 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	297 // If needed, synchronize _min_heap_byte size and _initial_heap_byte_size
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	298 if (_min_heap_byte_size < smallest_heap_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	299 _min_heap_byte_size = smallest_heap_size;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	300 if (InitialHeapSize < _min_heap_byte_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	301 FLAG_SET_ERGO(uintx, InitialHeapSize, smallest_heap_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	302 _initial_heap_byte_size = smallest_heap_size;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	303 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	304 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	305
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	306 // Now take the actual NewSize into account. We will silently increase NewSize
14726 92aa6797d639 Backed out merge changeset: b51e29501f30 Doug Simon <doug.simon@oracle.com> parents: 14697 diff changeset	307 // if the user specified a smaller value.
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	308 smallest_new_size = MAX2(smallest_new_size, (uintx)align_size_down(NewSize, _gen_alignment));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	309 if (smallest_new_size != NewSize) {
14726 92aa6797d639 Backed out merge changeset: b51e29501f30 Doug Simon <doug.simon@oracle.com> parents: 14697 diff changeset	310 FLAG_SET_ERGO(uintx, NewSize, smallest_new_size);
0 a61af66fc99e Initial load duke parents: diff changeset	311 }
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	312 _initial_gen0_size = NewSize;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	313
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	314 if (!FLAG_IS_DEFAULT(MaxNewSize)) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	315 uintx min_new_size = MAX2(_gen_alignment, _min_gen0_size);
0 a61af66fc99e Initial load duke parents: diff changeset	316
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	317 if (MaxNewSize >= MaxHeapSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	318 // Make sure there is room for an old generation
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	319 uintx smaller_max_new_size = MaxHeapSize - _gen_alignment;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	320 if (FLAG_IS_CMDLINE(MaxNewSize)) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	321 warning("MaxNewSize (" SIZE_FORMAT "k) is equal to or greater than the entire "
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	322 "heap (" SIZE_FORMAT "k). A new max generation size of " SIZE_FORMAT "k will be used.",
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	323 MaxNewSize/K, MaxHeapSize/K, smaller_max_new_size/K);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	324 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	325 FLAG_SET_ERGO(uintx, MaxNewSize, smaller_max_new_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	326 if (NewSize > MaxNewSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	327 FLAG_SET_ERGO(uintx, NewSize, MaxNewSize);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	328 _initial_gen0_size = NewSize;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	329 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	330 } else if (MaxNewSize < min_new_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	331 FLAG_SET_ERGO(uintx, MaxNewSize, min_new_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	332 } else if (!is_size_aligned(MaxNewSize, _gen_alignment)) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	333 FLAG_SET_ERGO(uintx, MaxNewSize, align_size_down(MaxNewSize, _gen_alignment));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	334 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	335 _max_gen0_size = MaxNewSize;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	336 }
0 a61af66fc99e Initial load duke parents: diff changeset	337
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	338 if (NewSize > MaxNewSize) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	339 // At this point this should only happen if the user specifies a large NewSize and/or
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	340 // a small (but not too small) MaxNewSize.
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	341 if (FLAG_IS_CMDLINE(MaxNewSize)) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	342 warning("NewSize (" SIZE_FORMAT "k) is greater than the MaxNewSize (" SIZE_FORMAT "k). "
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	343 "A new max generation size of " SIZE_FORMAT "k will be used.",
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	344 NewSize/K, MaxNewSize/K, NewSize/K);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	345 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	346 FLAG_SET_ERGO(uintx, MaxNewSize, NewSize);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	347 _max_gen0_size = MaxNewSize;
0 a61af66fc99e Initial load duke parents: diff changeset	348 }
13059 46d7652b223c 8026853: Prepare GC code for collector policy regression fix jwilhelm parents: 13058 diff changeset	349
0 a61af66fc99e Initial load duke parents: diff changeset	350 if (SurvivorRatio < 1 \|\| NewRatio < 1) {
12831 087f02e22fc2 8025854: Use "young gen" instead of "eden" jwilhelm parents: 12830 diff changeset	351 vm_exit_during_initialization("Invalid young gen ratio specified");
0 a61af66fc99e Initial load duke parents: diff changeset	352 }
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	353
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	354 DEBUG_ONLY(GenCollectorPolicy::assert_flags();)
0 a61af66fc99e Initial load duke parents: diff changeset	355 }
a61af66fc99e Initial load duke parents: diff changeset	356
a61af66fc99e Initial load duke parents: diff changeset	357 void TwoGenerationCollectorPolicy::initialize_flags() {
a61af66fc99e Initial load duke parents: diff changeset	358 GenCollectorPolicy::initialize_flags();
a61af66fc99e Initial load duke parents: diff changeset	359
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	360 if (!is_size_aligned(OldSize, _gen_alignment)) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	361 FLAG_SET_ERGO(uintx, OldSize, align_size_down(OldSize, _gen_alignment));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	362 }
8013 95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	363
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	364 if (FLAG_IS_CMDLINE(OldSize) && FLAG_IS_DEFAULT(MaxHeapSize)) {
8013 95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	365 // NewRatio will be used later to set the young generation size so we use
95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	366 // it to calculate how big the heap should be based on the requested OldSize
95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	367 // and NewRatio.
95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	368 assert(NewRatio > 0, "NewRatio should have been set up earlier");
95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	369 size_t calculated_heapsize = (OldSize / NewRatio) * (NewRatio + 1);
95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	370
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	371 calculated_heapsize = align_size_up(calculated_heapsize, _heap_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	372 FLAG_SET_ERGO(uintx, MaxHeapSize, calculated_heapsize);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	373 _max_heap_byte_size = MaxHeapSize;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	374 FLAG_SET_ERGO(uintx, InitialHeapSize, calculated_heapsize);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	375 _initial_heap_byte_size = InitialHeapSize;
8013 95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	376 }
0 a61af66fc99e Initial load duke parents: diff changeset	377
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	378 // Adjust NewSize and OldSize or MaxHeapSize to match each other
10241 d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	379 if (NewSize + OldSize > MaxHeapSize) {
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	380 if (_max_heap_size_cmdline) {
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	381 // Somebody has set a maximum heap size with the intention that we should not
10241 d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	382 // exceed it. Adjust New/OldSize as necessary.
d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	383 uintx calculated_size = NewSize + OldSize;
d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	384 double shrink_factor = (double) MaxHeapSize / calculated_size;
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	385 uintx smaller_new_size = align_size_down((uintx)(NewSize * shrink_factor), _gen_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	386 FLAG_SET_ERGO(uintx, NewSize, MAX2(young_gen_size_lower_bound(), smaller_new_size));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	387 _initial_gen0_size = NewSize;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	388
10241 d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	389 // OldSize is already aligned because above we aligned MaxHeapSize to
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	390 // _heap_alignment, and we just made sure that NewSize is aligned to
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	391 // _gen_alignment. In initialize_flags() we verified that _heap_alignment
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	392 // is a multiple of _gen_alignment.
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	393 FLAG_SET_ERGO(uintx, OldSize, MaxHeapSize - NewSize);
10241 d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	394 } else {
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	395 FLAG_SET_ERGO(uintx, MaxHeapSize, align_size_up(NewSize + OldSize, _heap_alignment));
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	396 _max_heap_byte_size = MaxHeapSize;
10241 d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	397 }
d17700c82d7d 8006088: Incompatible heap size flags accepted by VM tschatzl parents: 10239 diff changeset	398 }
10284 7a95933197d0 8014058: Regression tests for 8006088 tschatzl parents: 10241 diff changeset	399
0 a61af66fc99e Initial load duke parents: diff changeset	400 always_do_update_barrier = UseConcMarkSweepGC;
a61af66fc99e Initial load duke parents: diff changeset	401
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	402 DEBUG_ONLY(TwoGenerationCollectorPolicy::assert_flags();)
0 a61af66fc99e Initial load duke parents: diff changeset	403 }
a61af66fc99e Initial load duke parents: diff changeset	404
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	405 // Values set on the command line win over any ergonomically
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	406 // set command line parameters.
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	407 // Ergonomic choice of parameters are done before this
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	408 // method is called. Values for command line parameters such as NewSize
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	409 // and MaxNewSize feed those ergonomic choices into this method.
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	410 // This method makes the final generation sizings consistent with
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	411 // themselves and with overall heap sizings.
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	412 // In the absence of explicitly set command line flags, policies
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	413 // such as the use of NewRatio are used to size the generation.
0 a61af66fc99e Initial load duke parents: diff changeset	414 void GenCollectorPolicy::initialize_size_info() {
a61af66fc99e Initial load duke parents: diff changeset	415 CollectorPolicy::initialize_size_info();
a61af66fc99e Initial load duke parents: diff changeset	416
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	417 // _space_alignment is used for alignment within a generation.
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	418 // There is additional alignment done down stream for some
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	419 // collectors that sometimes causes unwanted rounding up of
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	420 // generations sizes.
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	421
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	422 // Determine maximum size of gen0
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	423
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	424 size_t max_new_size = 0;
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	425 if (!FLAG_IS_DEFAULT(MaxNewSize)) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	426 max_new_size = MaxNewSize;
0 a61af66fc99e Initial load duke parents: diff changeset	427 } else {
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	428 max_new_size = scale_by_NewRatio_aligned(_max_heap_byte_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	429 // Bound the maximum size by NewSize below (since it historically
0 a61af66fc99e Initial load duke parents: diff changeset	430 // would have been NewSize and because the NewRatio calculation could
a61af66fc99e Initial load duke parents: diff changeset	431 // yield a size that is too small) and bound it by MaxNewSize above.
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	432 // Ergonomics plays here by previously calculating the desired
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	433 // NewSize and MaxNewSize.
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	434 max_new_size = MIN2(MAX2(max_new_size, NewSize), MaxNewSize);
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	435 }
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	436 assert(max_new_size > 0, "All paths should set max_new_size");
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	437
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	438 // Given the maximum gen0 size, determine the initial and
2368 dde920245681 6896099: Integrate CMS heap ergo with default heap sizing ergo ysr parents: 1994 diff changeset	439 // minimum gen0 sizes.
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	440
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	441 if (_max_heap_byte_size == _min_heap_byte_size) {
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	442 // The maximum and minimum heap sizes are the same so the generations
63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	443 // minimum and initial must be the same as its maximum.
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	444 _min_gen0_size = max_new_size;
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	445 _initial_gen0_size = max_new_size;
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	446 _max_gen0_size = max_new_size;
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	447 } else {
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	448 size_t desired_new_size = 0;
14359 f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	449 if (FLAG_IS_CMDLINE(NewSize)) {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	450 // If NewSize is set on the command line, we must use it as
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	451 // the initial size and it also makes sense to use it as the
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	452 // lower limit.
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	453 _min_gen0_size = NewSize;
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	454 desired_new_size = NewSize;
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	455 max_new_size = MAX2(max_new_size, NewSize);
14359 f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	456 } else if (FLAG_IS_ERGO(NewSize)) {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	457 // If NewSize is set ergonomically, we should use it as a lower
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	458 // limit, but use NewRatio to calculate the initial size.
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	459 _min_gen0_size = NewSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	460 desired_new_size =
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	461 MAX2(scale_by_NewRatio_aligned(_initial_heap_byte_size), NewSize);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	462 max_new_size = MAX2(max_new_size, NewSize);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	463 } else {
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	464 // For the case where NewSize is the default, use NewRatio
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	465 // to size the minimum and initial generation sizes.
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	466 // Use the default NewSize as the floor for these values. If
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	467 // NewRatio is overly large, the resulting sizes can be too small.
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	468 _min_gen0_size = MAX2(scale_by_NewRatio_aligned(_min_heap_byte_size), NewSize);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	469 desired_new_size =
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	470 MAX2(scale_by_NewRatio_aligned(_initial_heap_byte_size), NewSize);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	471 }
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	472
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	473 assert(_min_gen0_size > 0, "Sanity check");
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	474 _initial_gen0_size = desired_new_size;
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	475 _max_gen0_size = max_new_size;
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	476
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	477 // At this point the desirable initial and minimum sizes have been
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	478 // determined without regard to the maximum sizes.
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	479
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	480 // Bound the sizes by the corresponding overall heap sizes.
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	481 _min_gen0_size = bound_minus_alignment(_min_gen0_size, _min_heap_byte_size);
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	482 _initial_gen0_size = bound_minus_alignment(_initial_gen0_size, _initial_heap_byte_size);
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	483 _max_gen0_size = bound_minus_alignment(_max_gen0_size, _max_heap_byte_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	484
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	485 // At this point all three sizes have been checked against the
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	486 // maximum sizes but have not been checked for consistency among the three.
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	487
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	488 // Final check min <= initial <= max
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	489 _min_gen0_size = MIN2(_min_gen0_size, _max_gen0_size);
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	490 _initial_gen0_size = MAX2(MIN2(_initial_gen0_size, _max_gen0_size), _min_gen0_size);
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	491 _min_gen0_size = MIN2(_min_gen0_size, _initial_gen0_size);
0 a61af66fc99e Initial load duke parents: diff changeset	492 }
a61af66fc99e Initial load duke parents: diff changeset	493
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	494 // Write back to flags if necessary.
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	495 if (NewSize != _initial_gen0_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	496 FLAG_SET_ERGO(uintx, NewSize, _initial_gen0_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	497 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	498
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	499 if (MaxNewSize != _max_gen0_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	500 FLAG_SET_ERGO(uintx, MaxNewSize, _max_gen0_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	501 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	502
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	503 if (PrintGCDetails && Verbose) {
2368 dde920245681 6896099: Integrate CMS heap ergo with default heap sizing ergo ysr parents: 1994 diff changeset	504 gclog_or_tty->print_cr("1: Minimum gen0 " SIZE_FORMAT " Initial gen0 "
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	505 SIZE_FORMAT " Maximum gen0 " SIZE_FORMAT,
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	506 _min_gen0_size, _initial_gen0_size, _max_gen0_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	507 }
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	508
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	509 DEBUG_ONLY(GenCollectorPolicy::assert_size_info();)
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	510 }
0 a61af66fc99e Initial load duke parents: diff changeset	511
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	512 // Call this method during the sizing of the gen1 to make
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	513 // adjustments to gen0 because of gen1 sizing policy. gen0 initially has
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	514 // the most freedom in sizing because it is done before the
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	515 // policy for gen1 is applied. Once gen1 policies have been applied,
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	516 // there may be conflicts in the shape of the heap and this method
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	517 // is used to make the needed adjustments. The application of the
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	518 // policies could be more sophisticated (iterative for example) but
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	519 // keeping it simple also seems a worthwhile goal.
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	520 bool TwoGenerationCollectorPolicy::adjust_gen0_sizes(size_t* gen0_size_ptr,
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	521 size_t* gen1_size_ptr,
13066 236cecd9ec97 8028093: Initial young size is smaller than minimum young size jwilhelm parents: 13065 diff changeset	522 const size_t heap_size) {
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	523 bool result = false;
8013 95ccff9eee8e 6348447: Specifying -XX:OldSize crashes 64-bit VMs jwilhelm parents: 7451 diff changeset	524
13066 236cecd9ec97 8028093: Initial young size is smaller than minimum young size jwilhelm parents: 13065 diff changeset	525 if ((gen0_size_ptr + gen1_size_ptr) > heap_size) {
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	526 uintx smallest_new_size = young_gen_size_lower_bound();
13066 236cecd9ec97 8028093: Initial young size is smaller than minimum young size jwilhelm parents: 13065 diff changeset	527 if ((heap_size < (*gen0_size_ptr + _min_gen1_size)) &&
236cecd9ec97 8028093: Initial young size is smaller than minimum young size jwilhelm parents: 13065 diff changeset	528 (heap_size >= _min_gen1_size + smallest_new_size)) {
236cecd9ec97 8028093: Initial young size is smaller than minimum young size jwilhelm parents: 13065 diff changeset	529 // Adjust gen0 down to accommodate _min_gen1_size
236cecd9ec97 8028093: Initial young size is smaller than minimum young size jwilhelm parents: 13065 diff changeset	530 *gen0_size_ptr = align_size_down_bounded(heap_size - _min_gen1_size, _gen_alignment);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	531 result = true;
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	532 } else {
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	533 gen1_size_ptr = align_size_down_bounded(heap_size - gen0_size_ptr, _gen_alignment);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	534 }
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	535 }
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	536 return result;
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	537 }
0 a61af66fc99e Initial load duke parents: diff changeset	538
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	539 // Minimum sizes of the generations may be different than
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	540 // the initial sizes. An inconsistency is permitted here
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	541 // in the total size that can be specified explicitly by
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	542 // command line specification of OldSize and NewSize and
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	543 // also a command line specification of -Xms. Issue a warning
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	544 // but allow the values to pass.
0 a61af66fc99e Initial load duke parents: diff changeset	545
a61af66fc99e Initial load duke parents: diff changeset	546 void TwoGenerationCollectorPolicy::initialize_size_info() {
a61af66fc99e Initial load duke parents: diff changeset	547 GenCollectorPolicy::initialize_size_info();
a61af66fc99e Initial load duke parents: diff changeset	548
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	549 // At this point the minimum, initial and maximum sizes
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	550 // of the overall heap and of gen0 have been determined.
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	551 // The maximum gen1 size can be determined from the maximum gen0
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	552 // and maximum heap size since no explicit flags exist
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	553 // for setting the gen1 maximum.
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	554 _max_gen1_size = MAX2(_max_heap_byte_size - _max_gen0_size, _gen_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	555
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	556 // If no explicit command line flag has been set for the
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	557 // gen1 size, use what is left for gen1
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	558 if (!FLAG_IS_CMDLINE(OldSize)) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	559 // The user has not specified any value but the ergonomics
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	560 // may have chosen a value (which may or may not be consistent
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	561 // with the overall heap size). In either case make
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	562 // the minimum, maximum and initial sizes consistent
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	563 // with the gen0 sizes and the overall heap sizes.
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	564 _min_gen1_size = MAX2(_min_heap_byte_size - _min_gen0_size, _gen_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	565 _initial_gen1_size = MAX2(_initial_heap_byte_size - _initial_gen0_size, _gen_alignment);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	566 // _max_gen1_size has already been made consistent above
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	567 FLAG_SET_ERGO(uintx, OldSize, _initial_gen1_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	568 } else {
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	569 // OldSize has been explicitly set on the command line. Use the
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	570 // OldSize and then determine the consequences.
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	571 _min_gen1_size = MIN2(OldSize, _min_heap_byte_size - _min_gen0_size);
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	572 _initial_gen1_size = OldSize;
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	573
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	574 // If the user has explicitly set an OldSize that is inconsistent
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	575 // with other command line flags, issue a warning.
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	576 // The generation minimums and the overall heap minimum should
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	577 // be within one generation alignment.
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	578 if ((_min_gen1_size + _min_gen0_size + _gen_alignment) < _min_heap_byte_size) {
0 a61af66fc99e Initial load duke parents: diff changeset	579 warning("Inconsistency between minimum heap size and minimum "
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	580 "generation sizes: using minimum heap = " SIZE_FORMAT,
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	581 _min_heap_byte_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	582 }
13059 46d7652b223c 8026853: Prepare GC code for collector policy regression fix jwilhelm parents: 13058 diff changeset	583 if (OldSize > _max_gen1_size) {
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	584 warning("Inconsistency between maximum heap size and maximum "
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	585 "generation sizes: using maximum heap = " SIZE_FORMAT
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	586 " -XX:OldSize flag is being ignored",
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	587 _max_heap_byte_size);
2368 dde920245681 6896099: Integrate CMS heap ergo with default heap sizing ergo ysr parents: 1994 diff changeset	588 }
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	589 // If there is an inconsistency between the OldSize and the minimum and/or
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	590 // initial size of gen0, since OldSize was explicitly set, OldSize wins.
13066 236cecd9ec97 8028093: Initial young size is smaller than minimum young size jwilhelm parents: 13065 diff changeset	591 if (adjust_gen0_sizes(&_min_gen0_size, &_min_gen1_size, _min_heap_byte_size)) {
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	592 if (PrintGCDetails && Verbose) {
2368 dde920245681 6896099: Integrate CMS heap ergo with default heap sizing ergo ysr parents: 1994 diff changeset	593 gclog_or_tty->print_cr("2: Minimum gen0 " SIZE_FORMAT " Initial gen0 "
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	594 SIZE_FORMAT " Maximum gen0 " SIZE_FORMAT,
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	595 _min_gen0_size, _initial_gen0_size, _max_gen0_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	596 }
0 a61af66fc99e Initial load duke parents: diff changeset	597 }
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	598 // The same as above for the old gen initial size.
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	599 if (adjust_gen0_sizes(&_initial_gen0_size, &_initial_gen1_size,
13066 236cecd9ec97 8028093: Initial young size is smaller than minimum young size jwilhelm parents: 13065 diff changeset	600 _initial_heap_byte_size)) {
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	601 if (PrintGCDetails && Verbose) {
2368 dde920245681 6896099: Integrate CMS heap ergo with default heap sizing ergo ysr parents: 1994 diff changeset	602 gclog_or_tty->print_cr("3: Minimum gen0 " SIZE_FORMAT " Initial gen0 "
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	603 SIZE_FORMAT " Maximum gen0 " SIZE_FORMAT,
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	604 _min_gen0_size, _initial_gen0_size, _max_gen0_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	605 }
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	606 }
0 a61af66fc99e Initial load duke parents: diff changeset	607 }
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	608
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	609 _min_gen1_size = MIN2(_min_gen1_size, _max_gen1_size);
0 a61af66fc99e Initial load duke parents: diff changeset	610
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	611 // Make sure that min gen1 <= initial gen1 <= max gen1.
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	612 _initial_gen1_size = MAX2(_initial_gen1_size, _min_gen1_size);
9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	613 _initial_gen1_size = MIN2(_initial_gen1_size, _max_gen1_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	614
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	615 // Write back to flags if necessary
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	616 if (NewSize != _initial_gen0_size) {
13065 3ad2b68d107e 8027911: Assertion in the collector policy when running gc/arguments/TestMaxNewSize.java jwilhelm parents: 13060 diff changeset	617 FLAG_SET_ERGO(uintx, NewSize, _initial_gen0_size);
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	618 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	619
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	620 if (MaxNewSize != _max_gen0_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	621 FLAG_SET_ERGO(uintx, MaxNewSize, _max_gen0_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	622 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	623
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	624 if (OldSize != _initial_gen1_size) {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	625 FLAG_SET_ERGO(uintx, OldSize, _initial_gen1_size);
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	626 }
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	627
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	628 if (PrintGCDetails && Verbose) {
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	629 gclog_or_tty->print_cr("Minimum gen1 " SIZE_FORMAT " Initial gen1 "
183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	630 SIZE_FORMAT " Maximum gen1 " SIZE_FORMAT,
12830 9b4d0569f2f4 8025852: Remove unnecessary setters in collector policy classes jwilhelm parents: 12350 diff changeset	631 _min_gen1_size, _initial_gen1_size, _max_gen1_size);
13 183f41cf8bfe 6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO jmasa parents: 0 diff changeset	632 }
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	633
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	634 DEBUG_ONLY(TwoGenerationCollectorPolicy::assert_size_info();)
0 a61af66fc99e Initial load duke parents: diff changeset	635 }
a61af66fc99e Initial load duke parents: diff changeset	636
a61af66fc99e Initial load duke parents: diff changeset	637 HeapWord* GenCollectorPolicy::mem_allocate_work(size_t size,
a61af66fc99e Initial load duke parents: diff changeset	638 bool is_tlab,
a61af66fc99e Initial load duke parents: diff changeset	639 bool* gc_overhead_limit_was_exceeded) {
a61af66fc99e Initial load duke parents: diff changeset	640 GenCollectedHeap *gch = GenCollectedHeap::heap();
a61af66fc99e Initial load duke parents: diff changeset	641
a61af66fc99e Initial load duke parents: diff changeset	642 debug_only(gch->check_for_valid_allocation_state());
a61af66fc99e Initial load duke parents: diff changeset	643 assert(gch->no_gc_in_progress(), "Allocation during gc not allowed");
1387 0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	644
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	645 // In general gc_overhead_limit_was_exceeded should be false so
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	646 // set it so here and reset it to true only if the gc time
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	647 // limit is being exceeded as checked below.
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	648 *gc_overhead_limit_was_exceeded = false;
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	649
0 a61af66fc99e Initial load duke parents: diff changeset	650 HeapWord* result = NULL;
a61af66fc99e Initial load duke parents: diff changeset	651
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	652 // Loop until the allocation is satisfied, or unsatisfied after GC.
8853 2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8743 diff changeset	653 for (int try_count = 1, gclocker_stalled_count = 0; /* return or throw */; try_count += 1) {
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	654 HandleMark hm; // Discard any handles allocated in each iteration.
0 a61af66fc99e Initial load duke parents: diff changeset	655
a61af66fc99e Initial load duke parents: diff changeset	656 // First allocation attempt is lock-free.
a61af66fc99e Initial load duke parents: diff changeset	657 Generation *gen0 = gch->get_gen(0);
a61af66fc99e Initial load duke parents: diff changeset	658 assert(gen0->supports_inline_contig_alloc(),
a61af66fc99e Initial load duke parents: diff changeset	659 "Otherwise, must do alloc within heap lock");
a61af66fc99e Initial load duke parents: diff changeset	660 if (gen0->should_allocate(size, is_tlab)) {
a61af66fc99e Initial load duke parents: diff changeset	661 result = gen0->par_allocate(size, is_tlab);
a61af66fc99e Initial load duke parents: diff changeset	662 if (result != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	663 assert(gch->is_in_reserved(result), "result not in heap");
a61af66fc99e Initial load duke parents: diff changeset	664 return result;
a61af66fc99e Initial load duke parents: diff changeset	665 }
a61af66fc99e Initial load duke parents: diff changeset	666 }
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	667 unsigned int gc_count_before; // Read inside the Heap_lock locked region.
0 a61af66fc99e Initial load duke parents: diff changeset	668 {
a61af66fc99e Initial load duke parents: diff changeset	669 MutexLocker ml(Heap_lock);
a61af66fc99e Initial load duke parents: diff changeset	670 if (PrintGC && Verbose) {
a61af66fc99e Initial load duke parents: diff changeset	671 gclog_or_tty->print_cr("TwoGenerationCollectorPolicy::mem_allocate_work:"
a61af66fc99e Initial load duke parents: diff changeset	672 " attempting locked slow path allocation");
a61af66fc99e Initial load duke parents: diff changeset	673 }
a61af66fc99e Initial load duke parents: diff changeset	674 // Note that only large objects get a shot at being
a61af66fc99e Initial load duke parents: diff changeset	675 // allocated in later generations.
a61af66fc99e Initial load duke parents: diff changeset	676 bool first_only = ! should_try_older_generation_allocation(size);
a61af66fc99e Initial load duke parents: diff changeset	677
a61af66fc99e Initial load duke parents: diff changeset	678 result = gch->attempt_allocation(size, is_tlab, first_only);
a61af66fc99e Initial load duke parents: diff changeset	679 if (result != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	680 assert(gch->is_in_reserved(result), "result not in heap");
a61af66fc99e Initial load duke parents: diff changeset	681 return result;
a61af66fc99e Initial load duke parents: diff changeset	682 }
a61af66fc99e Initial load duke parents: diff changeset	683
a61af66fc99e Initial load duke parents: diff changeset	684 if (GC_locker::is_active_and_needs_gc()) {
a61af66fc99e Initial load duke parents: diff changeset	685 if (is_tlab) {
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	686 return NULL; // Caller will retry allocating individual object.
0 a61af66fc99e Initial load duke parents: diff changeset	687 }
a61af66fc99e Initial load duke parents: diff changeset	688 if (!gch->is_maximal_no_gc()) {
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	689 // Try and expand heap to satisfy request.
0 a61af66fc99e Initial load duke parents: diff changeset	690 result = expand_heap_and_allocate(size, is_tlab);
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	691 // Result could be null if we are out of space.
0 a61af66fc99e Initial load duke parents: diff changeset	692 if (result != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	693 return result;
a61af66fc99e Initial load duke parents: diff changeset	694 }
a61af66fc99e Initial load duke parents: diff changeset	695 }
a61af66fc99e Initial load duke parents: diff changeset	696
8853 2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8743 diff changeset	697 if (gclocker_stalled_count > GCLockerRetryAllocationCount) {
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	698 return NULL; // We didn't get to do a GC and we didn't get any memory.
8853 2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8743 diff changeset	699 }
2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8743 diff changeset	700
0 a61af66fc99e Initial load duke parents: diff changeset	701 // If this thread is not in a jni critical section, we stall
a61af66fc99e Initial load duke parents: diff changeset	702 // the requestor until the critical section has cleared and
a61af66fc99e Initial load duke parents: diff changeset	703 // GC allowed. When the critical section clears, a GC is
a61af66fc99e Initial load duke parents: diff changeset	704 // initiated by the last thread exiting the critical section; so
a61af66fc99e Initial load duke parents: diff changeset	705 // we retry the allocation sequence from the beginning of the loop,
a61af66fc99e Initial load duke parents: diff changeset	706 // rather than causing more, now probably unnecessary, GC attempts.
a61af66fc99e Initial load duke parents: diff changeset	707 JavaThread* jthr = JavaThread::current();
a61af66fc99e Initial load duke parents: diff changeset	708 if (!jthr->in_critical()) {
a61af66fc99e Initial load duke parents: diff changeset	709 MutexUnlocker mul(Heap_lock);
a61af66fc99e Initial load duke parents: diff changeset	710 // Wait for JNI critical section to be exited
a61af66fc99e Initial load duke parents: diff changeset	711 GC_locker::stall_until_clear();
8853 2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8743 diff changeset	712 gclocker_stalled_count += 1;
0 a61af66fc99e Initial load duke parents: diff changeset	713 continue;
a61af66fc99e Initial load duke parents: diff changeset	714 } else {
a61af66fc99e Initial load duke parents: diff changeset	715 if (CheckJNICalls) {
a61af66fc99e Initial load duke parents: diff changeset	716 fatal("Possible deadlock due to allocating while"
a61af66fc99e Initial load duke parents: diff changeset	717 " in jni critical section");
a61af66fc99e Initial load duke parents: diff changeset	718 }
a61af66fc99e Initial load duke parents: diff changeset	719 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	720 }
a61af66fc99e Initial load duke parents: diff changeset	721 }
a61af66fc99e Initial load duke parents: diff changeset	722
a61af66fc99e Initial load duke parents: diff changeset	723 // Read the gc count while the heap lock is held.
a61af66fc99e Initial load duke parents: diff changeset	724 gc_count_before = Universe::heap()->total_collections();
a61af66fc99e Initial load duke parents: diff changeset	725 }
a61af66fc99e Initial load duke parents: diff changeset	726
13059 46d7652b223c 8026853: Prepare GC code for collector policy regression fix jwilhelm parents: 13058 diff changeset	727 VM_GenCollectForAllocation op(size, is_tlab, gc_count_before);
0 a61af66fc99e Initial load duke parents: diff changeset	728 VMThread::execute(&op);
a61af66fc99e Initial load duke parents: diff changeset	729 if (op.prologue_succeeded()) {
a61af66fc99e Initial load duke parents: diff changeset	730 result = op.result();
a61af66fc99e Initial load duke parents: diff changeset	731 if (op.gc_locked()) {
a61af66fc99e Initial load duke parents: diff changeset	732 assert(result == NULL, "must be NULL if gc_locked() is true");
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	733 continue; // Retry and/or stall as necessary.
0 a61af66fc99e Initial load duke parents: diff changeset	734 }
1387 0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	735
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	736 // Allocation has failed and a collection
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	737 // has been done. If the gc time limit was exceeded the
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	738 // this time, return NULL so that an out-of-memory
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	739 // will be thrown. Clear gc_overhead_limit_exceeded
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	740 // so that the overhead exceeded does not persist.
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	741
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	742 const bool limit_exceeded = size_policy()->gc_overhead_limit_exceeded();
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	743 const bool softrefs_clear = all_soft_refs_clear();
8743 82657b6a8cc0 6976528: PS: assert(!limit_exceeded \|\| softrefs_clear) failed: Should have been cleared jmasa parents: 8072 diff changeset	744
1387 0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	745 if (limit_exceeded && softrefs_clear) {
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	746 *gc_overhead_limit_was_exceeded = true;
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	747 size_policy()->set_gc_overhead_limit_exceeded(false);
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	748 if (op.result() != NULL) {
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	749 CollectedHeap::fill_with_object(op.result(), size);
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	750 }
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	751 return NULL;
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	752 }
0 a61af66fc99e Initial load duke parents: diff changeset	753 assert(result == NULL \|\| gch->is_in_reserved(result),
a61af66fc99e Initial load duke parents: diff changeset	754 "result not in heap");
a61af66fc99e Initial load duke parents: diff changeset	755 return result;
a61af66fc99e Initial load duke parents: diff changeset	756 }
a61af66fc99e Initial load duke parents: diff changeset	757
a61af66fc99e Initial load duke parents: diff changeset	758 // Give a warning if we seem to be looping forever.
a61af66fc99e Initial load duke parents: diff changeset	759 if ((QueuedAllocationWarningCount > 0) &&
a61af66fc99e Initial load duke parents: diff changeset	760 (try_count % QueuedAllocationWarningCount == 0)) {
a61af66fc99e Initial load duke parents: diff changeset	761 warning("TwoGenerationCollectorPolicy::mem_allocate_work retries %d times \n\t"
a61af66fc99e Initial load duke parents: diff changeset	762 " size=%d %s", try_count, size, is_tlab ? "(TLAB)" : "");
a61af66fc99e Initial load duke parents: diff changeset	763 }
a61af66fc99e Initial load duke parents: diff changeset	764 }
a61af66fc99e Initial load duke parents: diff changeset	765 }
a61af66fc99e Initial load duke parents: diff changeset	766
a61af66fc99e Initial load duke parents: diff changeset	767 HeapWord* GenCollectorPolicy::expand_heap_and_allocate(size_t size,
a61af66fc99e Initial load duke parents: diff changeset	768 bool is_tlab) {
a61af66fc99e Initial load duke parents: diff changeset	769 GenCollectedHeap *gch = GenCollectedHeap::heap();
a61af66fc99e Initial load duke parents: diff changeset	770 HeapWord* result = NULL;
a61af66fc99e Initial load duke parents: diff changeset	771 for (int i = number_of_generations() - 1; i >= 0 && result == NULL; i--) {
a61af66fc99e Initial load duke parents: diff changeset	772 Generation *gen = gch->get_gen(i);
a61af66fc99e Initial load duke parents: diff changeset	773 if (gen->should_allocate(size, is_tlab)) {
a61af66fc99e Initial load duke parents: diff changeset	774 result = gen->expand_and_allocate(size, is_tlab);
a61af66fc99e Initial load duke parents: diff changeset	775 }
a61af66fc99e Initial load duke parents: diff changeset	776 }
a61af66fc99e Initial load duke parents: diff changeset	777 assert(result == NULL \|\| gch->is_in_reserved(result), "result not in heap");
a61af66fc99e Initial load duke parents: diff changeset	778 return result;
a61af66fc99e Initial load duke parents: diff changeset	779 }
a61af66fc99e Initial load duke parents: diff changeset	780
a61af66fc99e Initial load duke parents: diff changeset	781 HeapWord* GenCollectorPolicy::satisfy_failed_allocation(size_t size,
a61af66fc99e Initial load duke parents: diff changeset	782 bool is_tlab) {
a61af66fc99e Initial load duke parents: diff changeset	783 GenCollectedHeap *gch = GenCollectedHeap::heap();
a61af66fc99e Initial load duke parents: diff changeset	784 GCCauseSetter x(gch, GCCause::_allocation_failure);
a61af66fc99e Initial load duke parents: diff changeset	785 HeapWord* result = NULL;
a61af66fc99e Initial load duke parents: diff changeset	786
a61af66fc99e Initial load duke parents: diff changeset	787 assert(size != 0, "Precondition violated");
a61af66fc99e Initial load duke parents: diff changeset	788 if (GC_locker::is_active_and_needs_gc()) {
a61af66fc99e Initial load duke parents: diff changeset	789 // GC locker is active; instead of a collection we will attempt
a61af66fc99e Initial load duke parents: diff changeset	790 // to expand the heap, if there's room for expansion.
a61af66fc99e Initial load duke parents: diff changeset	791 if (!gch->is_maximal_no_gc()) {
a61af66fc99e Initial load duke parents: diff changeset	792 result = expand_heap_and_allocate(size, is_tlab);
a61af66fc99e Initial load duke parents: diff changeset	793 }
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	794 return result; // Could be null if we are out of space.
1994 6cd6d394f280 7001033: assert(gch->gc_cause() == GCCause::_scavenge_alot \|\| !gch->incremental_collection_failed()) ysr parents: 1972 diff changeset	795 } else if (!gch->incremental_collection_will_fail(false /* don't consult_young */)) {
0 a61af66fc99e Initial load duke parents: diff changeset	796 // Do an incremental collection.
a61af66fc99e Initial load duke parents: diff changeset	797 gch->do_collection(false /* full */,
a61af66fc99e Initial load duke parents: diff changeset	798 false /* clear_all_soft_refs */,
a61af66fc99e Initial load duke parents: diff changeset	799 size /* size */,
a61af66fc99e Initial load duke parents: diff changeset	800 is_tlab /* is_tlab */,
a61af66fc99e Initial load duke parents: diff changeset	801 number_of_generations() - 1 /* max_level */);
a61af66fc99e Initial load duke parents: diff changeset	802 } else {
1994 6cd6d394f280 7001033: assert(gch->gc_cause() == GCCause::_scavenge_alot \|\| !gch->incremental_collection_failed()) ysr parents: 1972 diff changeset	803 if (Verbose && PrintGCDetails) {
6cd6d394f280 7001033: assert(gch->gc_cause() == GCCause::_scavenge_alot \|\| !gch->incremental_collection_failed()) ysr parents: 1972 diff changeset	804 gclog_or_tty->print(" :: Trying full because partial may fail :: ");
6cd6d394f280 7001033: assert(gch->gc_cause() == GCCause::_scavenge_alot \|\| !gch->incremental_collection_failed()) ysr parents: 1972 diff changeset	805 }
0 a61af66fc99e Initial load duke parents: diff changeset	806 // Try a full collection; see delta for bug id 6266275
a61af66fc99e Initial load duke parents: diff changeset	807 // for the original code and why this has been simplified
a61af66fc99e Initial load duke parents: diff changeset	808 // with from-space allocation criteria modified and
a61af66fc99e Initial load duke parents: diff changeset	809 // such allocation moved out of the safepoint path.
a61af66fc99e Initial load duke parents: diff changeset	810 gch->do_collection(true /* full */,
a61af66fc99e Initial load duke parents: diff changeset	811 false /* clear_all_soft_refs */,
a61af66fc99e Initial load duke parents: diff changeset	812 size /* size */,
a61af66fc99e Initial load duke parents: diff changeset	813 is_tlab /* is_tlab */,
a61af66fc99e Initial load duke parents: diff changeset	814 number_of_generations() - 1 /* max_level */);
a61af66fc99e Initial load duke parents: diff changeset	815 }
a61af66fc99e Initial load duke parents: diff changeset	816
a61af66fc99e Initial load duke parents: diff changeset	817 result = gch->attempt_allocation(size, is_tlab, false /first_only/);
a61af66fc99e Initial load duke parents: diff changeset	818
a61af66fc99e Initial load duke parents: diff changeset	819 if (result != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	820 assert(gch->is_in_reserved(result), "result not in heap");
a61af66fc99e Initial load duke parents: diff changeset	821 return result;
a61af66fc99e Initial load duke parents: diff changeset	822 }
a61af66fc99e Initial load duke parents: diff changeset	823
a61af66fc99e Initial load duke parents: diff changeset	824 // OK, collection failed, try expansion.
a61af66fc99e Initial load duke parents: diff changeset	825 result = expand_heap_and_allocate(size, is_tlab);
a61af66fc99e Initial load duke parents: diff changeset	826 if (result != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	827 return result;
a61af66fc99e Initial load duke parents: diff changeset	828 }
a61af66fc99e Initial load duke parents: diff changeset	829
a61af66fc99e Initial load duke parents: diff changeset	830 // If we reach this point, we're really out of memory. Try every trick
a61af66fc99e Initial load duke parents: diff changeset	831 // we can to reclaim memory. Force collection of soft references. Force
a61af66fc99e Initial load duke parents: diff changeset	832 // a complete compaction of the heap. Any additional methods for finding
a61af66fc99e Initial load duke parents: diff changeset	833 // free memory should be here, especially if they are expensive. If this
a61af66fc99e Initial load duke parents: diff changeset	834 // attempt fails, an OOM exception will be thrown.
a61af66fc99e Initial load duke parents: diff changeset	835 {
10287 12f651e29f6b 6843347: Boundary values in some public GC options cause crashes tschatzl parents: 10284 diff changeset	836 UIntFlagSetting flag_change(MarkSweepAlwaysCompactCount, 1); // Make sure the heap is fully compacted
0 a61af66fc99e Initial load duke parents: diff changeset	837
a61af66fc99e Initial load duke parents: diff changeset	838 gch->do_collection(true /* full */,
a61af66fc99e Initial load duke parents: diff changeset	839 true /* clear_all_soft_refs */,
a61af66fc99e Initial load duke parents: diff changeset	840 size /* size */,
a61af66fc99e Initial load duke parents: diff changeset	841 is_tlab /* is_tlab */,
a61af66fc99e Initial load duke parents: diff changeset	842 number_of_generations() - 1 /* max_level */);
a61af66fc99e Initial load duke parents: diff changeset	843 }
a61af66fc99e Initial load duke parents: diff changeset	844
a61af66fc99e Initial load duke parents: diff changeset	845 result = gch->attempt_allocation(size, is_tlab, false /* first_only */);
a61af66fc99e Initial load duke parents: diff changeset	846 if (result != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	847 assert(gch->is_in_reserved(result), "result not in heap");
a61af66fc99e Initial load duke parents: diff changeset	848 return result;
a61af66fc99e Initial load duke parents: diff changeset	849 }
a61af66fc99e Initial load duke parents: diff changeset	850
1387 0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	851 assert(!should_clear_all_soft_refs(),
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	852 "Flag should have been handled and cleared prior to this point");
0bfd3fb24150 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit. jmasa parents: 1064 diff changeset	853
0 a61af66fc99e Initial load duke parents: diff changeset	854 // What else? We might try synchronous finalization later. If the total
a61af66fc99e Initial load duke parents: diff changeset	855 // space available is large enough for the allocation, then a more
a61af66fc99e Initial load duke parents: diff changeset	856 // complete compaction phase than we've tried so far might be
a61af66fc99e Initial load duke parents: diff changeset	857 // appropriate.
a61af66fc99e Initial load duke parents: diff changeset	858 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	859 }
a61af66fc99e Initial load duke parents: diff changeset	860
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	861 MetaWord* CollectorPolicy::satisfy_failed_metadata_allocation(
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	862 ClassLoaderData* loader_data,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	863 size_t word_size,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	864 Metaspace::MetadataType mdtype) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	865 uint loop_count = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	866 uint gc_count = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	867 uint full_gc_count = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	868
6923 3fadc0e8cffe 8000988: VM deadlock when running btree006 on windows-i586 jmasa parents: 6753 diff changeset	869 assert(!Heap_lock->owned_by_self(), "Should not be holding the Heap_lock");
3fadc0e8cffe 8000988: VM deadlock when running btree006 on windows-i586 jmasa parents: 6753 diff changeset	870
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	871 do {
6753 8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	872 MetaWord* result = NULL;
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	873 if (GC_locker::is_active_and_needs_gc()) {
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	874 // If the GC_locker is active, just expand and allocate.
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	875 // If that does not succeed, wait if this thread is not
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	876 // in a critical section itself.
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	877 result =
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	878 loader_data->metaspace_non_null()->expand_and_allocate(word_size,
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	879 mdtype);
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	880 if (result != NULL) {
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	881 return result;
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	882 }
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	883 JavaThread* jthr = JavaThread::current();
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	884 if (!jthr->in_critical()) {
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	885 // Wait for JNI critical section to be exited
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	886 GC_locker::stall_until_clear();
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	887 // The GC invoked by the last thread leaving the critical
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	888 // section will be a young collection and a full collection
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	889 // is (currently) needed for unloading classes so continue
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	890 // to the next iteration to get a full GC.
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	891 continue;
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	892 } else {
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	893 if (CheckJNICalls) {
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	894 fatal("Possible deadlock due to allocating while"
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	895 " in jni critical section");
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	896 }
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	897 return NULL;
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	898 }
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	899 }
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently jmasa parents: 6725 diff changeset	900
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	901 { // Need lock to get self consistent gc_count's
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	902 MutexLocker ml(Heap_lock);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	903 gc_count = Universe::heap()->total_collections();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	904 full_gc_count = Universe::heap()->total_full_collections();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	905 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	906
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	907 // Generate a VM operation
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	908 VM_CollectForMetadataAllocation op(loader_data,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	909 word_size,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	910 mdtype,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	911 gc_count,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	912 full_gc_count,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	913 GCCause::_metadata_GC_threshold);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	914 VMThread::execute(&op);
7446 e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders jmasa parents: 7180 diff changeset	915
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	916 // If GC was locked out, try again. Check before checking success because the
63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	917 // prologue could have succeeded and the GC still have been locked out.
7446 e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders jmasa parents: 7180 diff changeset	918 if (op.gc_locked()) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders jmasa parents: 7180 diff changeset	919 continue;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders jmasa parents: 7180 diff changeset	920 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders jmasa parents: 7180 diff changeset	921
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	922 if (op.prologue_succeeded()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	923 return op.result();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	924 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	925 loop_count++;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	926 if ((QueuedAllocationWarningCount > 0) &&
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	927 (loop_count % QueuedAllocationWarningCount == 0)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	928 warning("satisfy_failed_metadata_allocation() retries %d times \n\t"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	929 " size=%d", loop_count, word_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	930 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	931 } while (true); // Until a GC is done
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	932 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 3960 diff changeset	933
0 a61af66fc99e Initial load duke parents: diff changeset	934 // Return true if any of the following is true:
a61af66fc99e Initial load duke parents: diff changeset	935 // . the allocation won't fit into the current young gen heap
a61af66fc99e Initial load duke parents: diff changeset	936 // . gc locker is occupied (jni critical section)
a61af66fc99e Initial load duke parents: diff changeset	937 // . heap memory is tight -- the most recent previous collection
a61af66fc99e Initial load duke parents: diff changeset	938 // was a full collection because a partial collection (would
a61af66fc99e Initial load duke parents: diff changeset	939 // have) failed and is likely to fail again
a61af66fc99e Initial load duke parents: diff changeset	940 bool GenCollectorPolicy::should_try_older_generation_allocation(
a61af66fc99e Initial load duke parents: diff changeset	941 size_t word_size) const {
a61af66fc99e Initial load duke parents: diff changeset	942 GenCollectedHeap* gch = GenCollectedHeap::heap();
a61af66fc99e Initial load duke parents: diff changeset	943 size_t gen0_capacity = gch->get_gen(0)->capacity_before_gc();
a61af66fc99e Initial load duke parents: diff changeset	944 return (word_size > heap_word_size(gen0_capacity))
1888 a7214d79fcf1 6896603: CMS/GCH: collection_attempt_is_safe() ergo should use more recent data ysr parents: 1795 diff changeset	945 \|\| GC_locker::is_active_and_needs_gc()
a7214d79fcf1 6896603: CMS/GCH: collection_attempt_is_safe() ergo should use more recent data ysr parents: 1795 diff changeset	946 \|\| gch->incremental_collection_failed();
0 a61af66fc99e Initial load duke parents: diff changeset	947 }
a61af66fc99e Initial load duke parents: diff changeset	948
a61af66fc99e Initial load duke parents: diff changeset	949
a61af66fc99e Initial load duke parents: diff changeset	950 //
a61af66fc99e Initial load duke parents: diff changeset	951 // MarkSweepPolicy methods
a61af66fc99e Initial load duke parents: diff changeset	952 //
a61af66fc99e Initial load duke parents: diff changeset	953
13060 8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	954 void MarkSweepPolicy::initialize_alignments() {
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	955 _space_alignment = _gen_alignment = (uintx)Generation::GenGrain;
8f07aa079343 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking jwilhelm parents: 13059 diff changeset	956 _heap_alignment = compute_heap_alignment();
0 a61af66fc99e Initial load duke parents: diff changeset	957 }
a61af66fc99e Initial load duke parents: diff changeset	958
a61af66fc99e Initial load duke parents: diff changeset	959 void MarkSweepPolicy::initialize_generations() {
10271 f9be75d21404 8012902: remove use of global operator new - take 2 minqi parents: 10241 diff changeset	960 _generations = NEW_C_HEAP_ARRAY3(GenerationSpecPtr, number_of_generations(), mtGC, 0, AllocFailStrategy::RETURN_NULL);
13059 46d7652b223c 8026853: Prepare GC code for collector policy regression fix jwilhelm parents: 13058 diff changeset	961 if (_generations == NULL) {
0 a61af66fc99e Initial load duke parents: diff changeset	962 vm_exit_during_initialization("Unable to allocate gen spec");
13059 46d7652b223c 8026853: Prepare GC code for collector policy regression fix jwilhelm parents: 13058 diff changeset	963 }
0 a61af66fc99e Initial load duke parents: diff changeset	964
7451 ca0a78017dc7 8005396: Use ParNew with only one thread instead of DefNew as default for CMS on single CPU machines brutisso parents: 7446 diff changeset	965 if (UseParNewGC) {
0 a61af66fc99e Initial load duke parents: diff changeset	966 _generations[0] = new GenerationSpec(Generation::ParNew, _initial_gen0_size, _max_gen0_size);
a61af66fc99e Initial load duke parents: diff changeset	967 } else {
a61af66fc99e Initial load duke parents: diff changeset	968 _generations[0] = new GenerationSpec(Generation::DefNew, _initial_gen0_size, _max_gen0_size);
a61af66fc99e Initial load duke parents: diff changeset	969 }
a61af66fc99e Initial load duke parents: diff changeset	970 _generations[1] = new GenerationSpec(Generation::MarkSweepCompact, _initial_gen1_size, _max_gen1_size);
a61af66fc99e Initial load duke parents: diff changeset	971
13059 46d7652b223c 8026853: Prepare GC code for collector policy regression fix jwilhelm parents: 13058 diff changeset	972 if (_generations[0] == NULL \|\| _generations[1] == NULL) {
0 a61af66fc99e Initial load duke parents: diff changeset	973 vm_exit_during_initialization("Unable to allocate gen spec");
13059 46d7652b223c 8026853: Prepare GC code for collector policy regression fix jwilhelm parents: 13058 diff changeset	974 }
0 a61af66fc99e Initial load duke parents: diff changeset	975 }
a61af66fc99e Initial load duke parents: diff changeset	976
a61af66fc99e Initial load duke parents: diff changeset	977 void MarkSweepPolicy::initialize_gc_policy_counters() {
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 14306 diff changeset	978 // Initialize the policy counters - 2 collectors, 3 generations.
7451 ca0a78017dc7 8005396: Use ParNew with only one thread instead of DefNew as default for CMS on single CPU machines brutisso parents: 7446 diff changeset	979 if (UseParNewGC) {
0 a61af66fc99e Initial load duke parents: diff changeset	980 _gc_policy_counters = new GCPolicyCounters("ParNew:MSC", 2, 3);
7451 ca0a78017dc7 8005396: Use ParNew with only one thread instead of DefNew as default for CMS on single CPU machines brutisso parents: 7446 diff changeset	981 } else {
0 a61af66fc99e Initial load duke parents: diff changeset	982 _gc_policy_counters = new GCPolicyCounters("Copy:MSC", 2, 3);
a61af66fc99e Initial load duke parents: diff changeset	983 }
a61af66fc99e Initial load duke parents: diff changeset	984 }
14359 f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	985
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	986 /////////////// Unit tests ///////////////
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	987
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	988 #ifndef PRODUCT
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	989 // Testing that the NewSize flag is handled correct is hard because it
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	990 // depends on so many other configurable variables. This test only tries to
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	991 // verify that there are some basic rules for NewSize honored by the policies.
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	992 class TestGenCollectorPolicy {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	993 public:
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	994 static void test() {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	995 size_t flag_value;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	996
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	997 save_flags();
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	998
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	999 // Set some limits that makes the math simple.
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1000 FLAG_SET_ERGO(uintx, MaxHeapSize, 180 * M);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1001 FLAG_SET_ERGO(uintx, InitialHeapSize, 120 * M);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1002 Arguments::set_min_heap_size(40 * M);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1003
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1004 // If NewSize is set on the command line, it should be used
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1005 // for both min and initial young size if less than min heap.
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1006 flag_value = 20 * M;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1007 FLAG_SET_CMDLINE(uintx, NewSize, flag_value);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1008 verify_min(flag_value);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1009 verify_initial(flag_value);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1010
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1011 // If NewSize is set on command line, but is larger than the min
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1012 // heap size, it should only be used for initial young size.
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1013 flag_value = 80 * M;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1014 FLAG_SET_CMDLINE(uintx, NewSize, flag_value);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1015 verify_initial(flag_value);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1016
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1017 // If NewSize has been ergonomically set, the collector policy
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1018 // should use it for min but calculate the initial young size
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1019 // using NewRatio.
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1020 flag_value = 20 * M;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1021 FLAG_SET_ERGO(uintx, NewSize, flag_value);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1022 verify_min(flag_value);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1023 verify_scaled_initial(InitialHeapSize);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1024
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1025 restore_flags();
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1026
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1027 }
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1028
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1029 static void verify_min(size_t expected) {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1030 MarkSweepPolicy msp;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1031 msp.initialize_all();
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1032
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1033 assert(msp.min_gen0_size() <= expected, err_msg("%zu > %zu", msp.min_gen0_size(), expected));
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1034 }
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1035
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1036 static void verify_initial(size_t expected) {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1037 MarkSweepPolicy msp;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1038 msp.initialize_all();
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1039
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1040 assert(msp.initial_gen0_size() == expected, err_msg("%zu != %zu", msp.initial_gen0_size(), expected));
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1041 }
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1042
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1043 static void verify_scaled_initial(size_t initial_heap_size) {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1044 MarkSweepPolicy msp;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1045 msp.initialize_all();
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1046
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1047 size_t expected = msp.scale_by_NewRatio_aligned(initial_heap_size);
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1048 assert(msp.initial_gen0_size() == expected, err_msg("%zu != %zu", msp.initial_gen0_size(), expected));
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1049 assert(FLAG_IS_ERGO(NewSize) && NewSize == expected,
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1050 err_msg("NewSize should have been set ergonomically to %zu, but was %zu", expected, NewSize));
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1051 }
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1052
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1053 private:
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1054 static size_t original_InitialHeapSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1055 static size_t original_MaxHeapSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1056 static size_t original_MaxNewSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1057 static size_t original_MinHeapDeltaBytes;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1058 static size_t original_NewSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1059 static size_t original_OldSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1060
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1061 static void save_flags() {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1062 original_InitialHeapSize = InitialHeapSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1063 original_MaxHeapSize = MaxHeapSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1064 original_MaxNewSize = MaxNewSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1065 original_MinHeapDeltaBytes = MinHeapDeltaBytes;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1066 original_NewSize = NewSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1067 original_OldSize = OldSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1068 }
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1069
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1070 static void restore_flags() {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1071 InitialHeapSize = original_InitialHeapSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1072 MaxHeapSize = original_MaxHeapSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1073 MaxNewSize = original_MaxNewSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1074 MinHeapDeltaBytes = original_MinHeapDeltaBytes;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1075 NewSize = original_NewSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1076 OldSize = original_OldSize;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1077 }
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1078 };
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1079
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1080 size_t TestGenCollectorPolicy::original_InitialHeapSize = 0;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1081 size_t TestGenCollectorPolicy::original_MaxHeapSize = 0;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1082 size_t TestGenCollectorPolicy::original_MaxNewSize = 0;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1083 size_t TestGenCollectorPolicy::original_MinHeapDeltaBytes = 0;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1084 size_t TestGenCollectorPolicy::original_NewSize = 0;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1085 size_t TestGenCollectorPolicy::original_OldSize = 0;
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1086
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1087 void TestNewSize_test() {
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1088 TestGenCollectorPolicy::test();
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1089 }
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1090
f7f0c6a77d6d 8033426: Scale initial NewSize using NewRatio if not set on command line sjohanss parents: 14309 diff changeset	1091 #endif

Mercurial > hg > truffle

annotate src/share/vm/memory/collectorPolicy.cpp @ 14726:92aa6797d639