Mercurial > hg > truffle
annotate src/share/vm/memory/tenuredGeneration.hpp @ 12146:9758d9f36299
8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced
Summary: declare all user-defined operator new()s within Hotspot code with the empty throw() exception specification
Reviewed-by: coleenp, twisti, dholmes, hseigel, dcubed, kvn, ccheung
Contributed-by: lois.foltan@oracle.com
| author | coleenp |
|---|---|
| date | Thu, 29 Aug 2013 18:56:29 -0400 |
| parents | 8617e38bb4cb |
| children | de6a9e811145 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_MEMORY_TENUREDGENERATION_HPP |
| 26 #define SHARE_VM_MEMORY_TENUREDGENERATION_HPP | |
| 27 | |
| 28 #include "gc_implementation/shared/cSpaceCounters.hpp" | |
| 29 #include "gc_implementation/shared/gcStats.hpp" | |
| 30 #include "gc_implementation/shared/generationCounters.hpp" | |
| 31 #include "memory/generation.hpp" | |
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32 #include "utilities/macros.hpp" |
| 1972 | 33 |
| 0 | 34 // TenuredGeneration models the heap containing old (promoted/tenured) objects. |
| 35 | |
| 36 class ParGCAllocBufferWithBOT; | |
| 37 | |
| 38 class TenuredGeneration: public OneContigSpaceCardGeneration { | |
| 39 friend class VMStructs; | |
| 40 protected: | |
| 41 | |
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42 #if INCLUDE_ALL_GCS |
| 0 | 43 // To support parallel promotion: an array of parallel allocation |
| 44 // buffers, one per thread, initially NULL. | |
| 45 ParGCAllocBufferWithBOT** _alloc_buffers; | |
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46 #endif // INCLUDE_ALL_GCS |
| 0 | 47 |
| 48 // Retire all alloc buffers before a full GC, so that they will be | |
| 49 // re-allocated at the start of the next young GC. | |
| 50 void retire_alloc_buffers_before_full_gc(); | |
| 51 | |
| 52 GenerationCounters* _gen_counters; | |
| 53 CSpaceCounters* _space_counters; | |
| 54 | |
| 55 public: | |
| 56 TenuredGeneration(ReservedSpace rs, size_t initial_byte_size, int level, | |
| 57 GenRemSet* remset); | |
| 58 | |
| 59 Generation::Name kind() { return Generation::MarkSweepCompact; } | |
| 60 | |
| 61 // Printing | |
| 62 const char* name() const; | |
| 63 const char* short_name() const { return "Tenured"; } | |
| 64 bool must_be_youngest() const { return false; } | |
| 65 bool must_be_oldest() const { return true; } | |
| 66 | |
| 67 // Does a "full" (forced) collection invoked on this generation collect | |
| 68 // all younger generations as well? Note that this is a | |
| 69 // hack to allow the collection of the younger gen first if the flag is | |
| 70 // set. This is better than using th policy's should_collect_gen0_first() | |
| 71 // since that causes us to do an extra unnecessary pair of restart-&-stop-world. | |
| 72 virtual bool full_collects_younger_generations() const { | |
| 73 return !CollectGen0First; | |
| 74 } | |
| 75 | |
| 76 virtual void gc_prologue(bool full); | |
| 77 virtual void gc_epilogue(bool full); | |
| 78 bool should_collect(bool full, | |
| 79 size_t word_size, | |
| 80 bool is_tlab); | |
| 81 | |
| 82 virtual void collect(bool full, | |
| 83 bool clear_all_soft_refs, | |
| 84 size_t size, | |
| 85 bool is_tlab); | |
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86 virtual void compute_new_size(); |
| 0 | 87 |
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88 #if INCLUDE_ALL_GCS |
| 0 | 89 // Overrides. |
| 90 virtual oop par_promote(int thread_num, | |
| 91 oop obj, markOop m, size_t word_sz); | |
| 92 virtual void par_promote_alloc_undo(int thread_num, | |
| 93 HeapWord* obj, size_t word_sz); | |
| 94 virtual void par_promote_alloc_done(int thread_num); | |
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95 #endif // INCLUDE_ALL_GCS |
| 0 | 96 |
| 97 // Performance Counter support | |
| 98 void update_counters(); | |
| 99 | |
| 100 // Statistics | |
| 101 | |
| 102 virtual void update_gc_stats(int level, bool full); | |
| 103 | |
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104 virtual bool promotion_attempt_is_safe(size_t max_promoted_in_bytes) const; |
| 0 | 105 |
| 106 void verify_alloc_buffers_clean(); | |
| 107 }; | |
| 1972 | 108 |
| 109 #endif // SHARE_VM_MEMORY_TENUREDGENERATION_HPP |