Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/shared/hSpaceCounters.hpp @ 10287:12f651e29f6b
6843347: Boundary values in some public GC options cause crashes
Summary: Setting some public integer options to specific values causes crashes or undefined GC behavior. This patchset adds the necessary argument checking for these options.
Reviewed-by: jmasa, brutisso
| author | tschatzl |
|---|---|
| date | Wed, 15 May 2013 11:05:09 +0200 |
| parents | db9981fd3124 |
| children | de88570fabfc |
| rev | line source |
|---|---|
| 3289 | 1 /* |
|
6842
b9a9ed0f8eeb
7197424: update copyright year to match last edit in jdk8 hotspot repository
mikael
parents:
6197
diff
changeset
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2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. |
| 3289 | 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 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP | |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP | |
| 27 | |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
6842
diff
changeset
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28 #include "utilities/macros.hpp" |
|
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
6842
diff
changeset
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29 #if INCLUDE_ALL_GCS |
| 3289 | 30 #include "gc_implementation/shared/generationCounters.hpp" |
| 31 #include "memory/generation.hpp" | |
| 32 #include "runtime/perfData.hpp" | |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
6842
diff
changeset
|
33 #endif // INCLUDE_ALL_GCS |
| 3289 | 34 |
| 35 // A HSpaceCounter is a holder class for performance counters | |
| 36 // that track a collections (logical spaces) in a heap; | |
| 37 | |
| 38 class HeapSpaceUsedHelper; | |
| 39 class G1SpaceMonitoringSupport; | |
| 40 | |
| 6197 | 41 class HSpaceCounters: public CHeapObj<mtGC> { |
| 3289 | 42 friend class VMStructs; |
| 43 | |
| 44 private: | |
| 45 PerfVariable* _capacity; | |
| 46 PerfVariable* _used; | |
| 47 | |
| 48 // Constant PerfData types don't need to retain a reference. | |
| 49 // However, it's a good idea to document them here. | |
| 50 | |
| 51 char* _name_space; | |
| 52 | |
| 53 public: | |
| 54 | |
| 55 HSpaceCounters(const char* name, int ordinal, size_t max_size, | |
| 56 size_t initial_capacity, GenerationCounters* gc); | |
| 57 | |
| 58 ~HSpaceCounters() { | |
| 6197 | 59 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC); |
| 3289 | 60 } |
| 61 | |
| 62 inline void update_capacity(size_t v) { | |
| 63 _capacity->set_value(v); | |
| 64 } | |
| 65 | |
| 66 inline void update_used(size_t v) { | |
| 67 _used->set_value(v); | |
| 68 } | |
| 69 | |
| 70 debug_only( | |
| 71 // for security reasons, we do not allow arbitrary reads from | |
| 72 // the counters as they may live in shared memory. | |
| 73 jlong used() { | |
| 74 return _used->get_value(); | |
| 75 } | |
| 76 jlong capacity() { | |
| 77 return _used->get_value(); | |
| 78 } | |
| 79 ) | |
| 80 | |
| 81 inline void update_all(size_t capacity, size_t used) { | |
| 82 update_capacity(capacity); | |
| 83 update_used(used); | |
| 84 } | |
| 85 | |
| 86 const char* name_space() const { return _name_space; } | |
| 87 }; | |
| 88 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP |