Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.hpp @ 10185:d50cc62e94ff
8012715: G1: GraphKit accesses PtrQueue::_index as int but is size_t
Summary: In graphKit INT operations were generated to access PtrQueue::_index which has type size_t. This is 64 bit on 64-bit machines. No problems occur on little endian machines as long as the index fits into 32 bit, but on big endian machines the upper part is read, which is zero. This leads to unnecessary branches to the slow path in the runtime.
Reviewed-by: twisti, johnc
Contributed-by: Martin Doerr <martin.doerr@sap.com>
| author | johnc |
|---|---|
| date | Wed, 24 Apr 2013 14:48:43 -0700 |
| parents | da91efe96a93 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved. |
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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_GC_IMPLEMENTATION_PARALLELSCAVENGE_VMPSOPERATIONS_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_VMPSOPERATIONS_HPP | |
| 27 | |
| 28 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" | |
| 29 #include "gc_implementation/shared/vmGCOperations.hpp" | |
| 30 #include "gc_interface/gcCause.hpp" | |
| 31 | |
| 0 | 32 class VM_ParallelGCFailedAllocation: public VM_GC_Operation { |
| 33 private: | |
| 34 size_t _size; | |
| 35 HeapWord* _result; | |
| 36 | |
| 37 public: | |
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38 VM_ParallelGCFailedAllocation(size_t size, unsigned int gc_count); |
| 0 | 39 |
| 40 virtual VMOp_Type type() const { | |
| 41 return VMOp_ParallelGCFailedAllocation; | |
| 42 } | |
| 43 virtual void doit(); | |
| 44 | |
| 45 HeapWord* result() const { return _result; } | |
| 46 }; | |
| 47 | |
| 48 class VM_ParallelGCSystemGC: public VM_GC_Operation { | |
| 49 public: | |
| 50 VM_ParallelGCSystemGC(unsigned int gc_count, unsigned int full_gc_count, | |
| 51 GCCause::Cause gc_cause); | |
| 52 virtual VMOp_Type type() const { return VMOp_ParallelGCSystemGC; } | |
| 53 virtual void doit(); | |
| 54 }; | |
| 1972 | 55 |
| 56 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_VMPSOPERATIONS_HPP |