Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/concurrentMarkSweep/freeChunk.cpp @ 17937:78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti
| author | drchase |
|---|---|
| date | Thu, 22 May 2014 15:52:41 -0400 |
| parents | b9a9ed0f8eeb |
| children |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2001, 2014, 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 #include "precompiled.hpp" |
| 6026 | 26 #include "gc_implementation/concurrentMarkSweep/freeChunk.hpp" |
| 27 #include "memory/freeBlockDictionary.hpp" | |
| 1972 | 28 #include "utilities/copy.hpp" |
| 0 | 29 |
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30 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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31 |
| 0 | 32 #ifndef PRODUCT |
| 33 | |
| 34 #define baadbabeHeapWord badHeapWordVal | |
| 35 #define deadbeefHeapWord 0xdeadbeef | |
| 36 | |
| 37 size_t const FreeChunk::header_size() { | |
| 38 return sizeof(FreeChunk)/HeapWordSize; | |
| 39 } | |
| 40 | |
| 41 void FreeChunk::mangleAllocated(size_t size) { | |
| 42 // mangle all but the header of a just-allocated block | |
| 43 // of storage | |
| 44 assert(size >= MinChunkSize, "smallest size of object"); | |
| 45 // we can't assert that _size == size because this may be an | |
| 46 // allocation out of a linear allocation block | |
| 47 assert(sizeof(FreeChunk) % HeapWordSize == 0, | |
| 48 "shouldn't write beyond chunk"); | |
| 49 HeapWord* addr = (HeapWord*)this; | |
| 50 size_t hdr = header_size(); | |
| 51 Copy::fill_to_words(addr + hdr, size - hdr, baadbabeHeapWord); | |
| 52 } | |
| 53 | |
| 187 | 54 void FreeChunk::mangleFreed(size_t sz) { |
| 0 | 55 assert(baadbabeHeapWord != deadbeefHeapWord, "Need distinct patterns"); |
| 56 // mangle all but the header of a just-freed block of storage | |
| 57 // just prior to passing it to the storage dictionary | |
| 187 | 58 assert(sz >= MinChunkSize, "smallest size of object"); |
| 59 assert(sz == size(), "just checking"); | |
| 0 | 60 HeapWord* addr = (HeapWord*)this; |
| 61 size_t hdr = header_size(); | |
| 187 | 62 Copy::fill_to_words(addr + hdr, sz - hdr, deadbeefHeapWord); |
| 0 | 63 } |
| 64 | |
| 65 void FreeChunk::verifyList() const { | |
| 66 FreeChunk* nextFC = next(); | |
| 67 if (nextFC != NULL) { | |
| 68 assert(this == nextFC->prev(), "broken chain"); | |
| 69 assert(size() == nextFC->size(), "wrong size"); | |
| 70 nextFC->verifyList(); | |
| 71 } | |
| 72 } | |
| 73 #endif | |
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74 |
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75 void FreeChunk::print_on(outputStream* st) { |
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76 st->print_cr("Next: " PTR_FORMAT " Prev: " PTR_FORMAT " %s", |
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77 next(), prev(), cantCoalesce() ? "[can't coalesce]" : ""); |
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78 } |