Mercurial > hg > truffle
annotate src/share/vm/memory/allocation.inline.hpp @ 6290:01d274503562
canonicalize reads and writes on null objects to deopts
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Tue, 28 Aug 2012 12:15:10 +0200 |
parents | d2a62e0f25eb |
children | b9a9ed0f8eeb |
rev | line source |
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0 | 1 /* |
2250 | 2 * Copyright (c) 1997, 2011, 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_ALLOCATION_INLINE_HPP |
26 #define SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP | |
27 | |
28 #include "runtime/os.hpp" | |
29 | |
0 | 30 // Explicit C-heap memory management |
31 | |
32 void trace_heap_malloc(size_t size, const char* name, void *p); | |
33 void trace_heap_free(void *p); | |
34 | |
2255 | 35 #ifndef PRODUCT |
2250 | 36 // Increments unsigned long value for statistics (not atomic on MP). |
37 inline void inc_stat_counter(volatile julong* dest, julong add_value) { | |
2255 | 38 #if defined(SPARC) || defined(X86) |
39 // Sparc and X86 have atomic jlong (8 bytes) instructions | |
2250 | 40 julong value = Atomic::load((volatile jlong*)dest); |
41 value += add_value; | |
42 Atomic::store((jlong)value, (volatile jlong*)dest); | |
2255 | 43 #else |
44 // possible word-tearing during load/store | |
45 *dest += add_value; | |
46 #endif | |
2250 | 47 } |
2255 | 48 #endif |
0 | 49 |
50 // allocate using malloc; will fail if no memory available | |
6197 | 51 inline char* AllocateHeap(size_t size, MEMFLAGS flags, address pc = 0) { |
52 if (pc == 0) { | |
53 pc = CURRENT_PC; | |
54 } | |
55 char* p = (char*) os::malloc(size, flags, pc); | |
0 | 56 #ifdef ASSERT |
6197 | 57 if (PrintMallocFree) trace_heap_malloc(size, "AllocateHeap", p); |
0 | 58 #endif |
6197 | 59 if (p == NULL) vm_exit_out_of_memory(size, "AllocateHeap"); |
60 return p; | |
61 } | |
62 | |
63 inline char* ReallocateHeap(char *old, size_t size, MEMFLAGS flags) { | |
64 char* p = (char*) os::realloc(old, size, flags, CURRENT_PC); | |
65 #ifdef ASSERT | |
66 if (PrintMallocFree) trace_heap_malloc(size, "ReallocateHeap", p); | |
67 #endif | |
68 if (p == NULL) vm_exit_out_of_memory(size, "ReallocateHeap"); | |
0 | 69 return p; |
70 } | |
71 | |
6197 | 72 inline void FreeHeap(void* p, MEMFLAGS memflags = mtInternal) { |
0 | 73 #ifdef ASSERT |
74 if (PrintMallocFree) trace_heap_free(p); | |
75 #endif | |
6197 | 76 os::free(p, memflags); |
0 | 77 } |
1972 | 78 |
6197 | 79 |
80 template <MEMFLAGS F> void* CHeapObj<F>::operator new(size_t size, | |
81 address caller_pc){ | |
82 #ifdef ASSERT | |
83 void* p = (void*)AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC)); | |
84 if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p); | |
85 return p; | |
86 #else | |
87 return (void *) AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC)); | |
88 #endif | |
89 } | |
90 | |
91 template <MEMFLAGS F> void* CHeapObj<F>::operator new (size_t size, | |
92 const std::nothrow_t& nothrow_constant, address caller_pc) { | |
93 #ifdef ASSERT | |
94 void* p = os::malloc(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC)); | |
95 if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p); | |
96 return p; | |
97 #else | |
98 return os::malloc(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC)); | |
99 #endif | |
100 } | |
101 | |
102 template <MEMFLAGS F> void CHeapObj<F>::operator delete(void* p){ | |
103 FreeHeap(p, F); | |
104 } | |
105 | |
106 | |
1972 | 107 #endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP |