Sun, 01 Apr 2012 17:04:26 -0400
Merge
1 /*
2 * Copyright (c) 1997, 2011, 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, const char* name = NULL) {
52 char* p = (char*) os::malloc(size);
53 #ifdef ASSERT
54 if (PrintMallocFree) trace_heap_malloc(size, name, p);
55 #else
56 Unused_Variable(name);
57 #endif
58 if (p == NULL) vm_exit_out_of_memory(size, name);
59 return p;
60 }
62 inline char* ReallocateHeap(char *old, size_t size, const char* name = NULL) {
63 char* p = (char*) os::realloc(old,size);
64 #ifdef ASSERT
65 if (PrintMallocFree) trace_heap_malloc(size, name, p);
66 #else
67 Unused_Variable(name);
68 #endif
69 if (p == NULL) vm_exit_out_of_memory(size, name);
70 return p;
71 }
73 inline void FreeHeap(void* p) {
74 #ifdef ASSERT
75 if (PrintMallocFree) trace_heap_free(p);
76 #endif
77 os::free(p);
78 }
80 #endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP