Tue, 30 Oct 2012 10:23:55 -0700
8000988: VM deadlock when running btree006 on windows-i586
Reviewed-by: johnc, jcoomes, ysr
1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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 */
25 #ifndef SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP
26 #define SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP
28 #include "runtime/os.hpp"
30 // Explicit C-heap memory management
32 void trace_heap_malloc(size_t size, const char* name, void *p);
33 void trace_heap_free(void *p);
35 #ifndef PRODUCT
36 // Increments unsigned long value for statistics (not atomic on MP).
37 inline void inc_stat_counter(volatile julong* dest, julong add_value) {
38 #if defined(SPARC) || defined(X86)
39 // Sparc and X86 have atomic jlong (8 bytes) instructions
40 julong value = Atomic::load((volatile jlong*)dest);
41 value += add_value;
42 Atomic::store((jlong)value, (volatile jlong*)dest);
43 #else
44 // possible word-tearing during load/store
45 *dest += add_value;
46 #endif
47 }
48 #endif
50 // allocate using malloc; will fail if no memory available
51 inline char* AllocateHeap(size_t size, MEMFLAGS flags, address pc = 0,
52 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) {
53 if (pc == 0) {
54 pc = CURRENT_PC;
55 }
56 char* p = (char*) os::malloc(size, flags, pc);
57 #ifdef ASSERT
58 if (PrintMallocFree) trace_heap_malloc(size, "AllocateHeap", p);
59 #endif
60 if (p == NULL && alloc_failmode == AllocFailStrategy::EXIT_OOM) vm_exit_out_of_memory(size, "AllocateHeap");
61 return p;
62 }
64 inline char* ReallocateHeap(char *old, size_t size, MEMFLAGS flags,
65 AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) {
66 char* p = (char*) os::realloc(old, size, flags, CURRENT_PC);
67 #ifdef ASSERT
68 if (PrintMallocFree) trace_heap_malloc(size, "ReallocateHeap", p);
69 #endif
70 if (p == NULL && alloc_failmode == AllocFailStrategy::EXIT_OOM) vm_exit_out_of_memory(size, "ReallocateHeap");
71 return p;
72 }
74 inline void FreeHeap(void* p, MEMFLAGS memflags = mtInternal) {
75 #ifdef ASSERT
76 if (PrintMallocFree) trace_heap_free(p);
77 #endif
78 os::free(p, memflags);
79 }
82 template <MEMFLAGS F> void* CHeapObj<F>::operator new(size_t size,
83 address caller_pc){
84 #ifdef ASSERT
85 void* p = (void*)AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));
86 if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);
87 return p;
88 #else
89 return (void *) AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));
90 #endif
91 }
93 template <MEMFLAGS F> void* CHeapObj<F>::operator new (size_t size,
94 const std::nothrow_t& nothrow_constant, address caller_pc) {
95 #ifdef ASSERT
96 void* p = (void*)AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC),
97 AllocFailStrategy::RETURN_NULL);
98 if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);
99 return p;
100 #else
101 return (void *) AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC),
102 AllocFailStrategy::RETURN_NULL);
103 #endif
104 }
106 template <MEMFLAGS F> void CHeapObj<F>::operator delete(void* p){
107 FreeHeap(p, F);
108 }
111 #endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP