Mercurial > hg > truffle
annotate src/share/vm/memory/allocation.inline.hpp @ 2250:f7de3327c683
7017124: Fix some VM stats to avoid 32-bit overflow
Summary: Added new method inc_stat_counter() to increment long statistic values and use atomic long load and store.
Reviewed-by: dholmes, jrose, phh, never
| author | kvn |
|---|---|
| date | Mon, 07 Feb 2011 10:34:39 -0800 |
| parents | f95d63e2154a |
| children | bf29934d2f4f |
| rev | line source |
|---|---|
| 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 | |
| 2250 | 35 // Increments unsigned long value for statistics (not atomic on MP). |
| 36 inline void inc_stat_counter(volatile julong* dest, julong add_value) { | |
| 37 julong value = Atomic::load((volatile jlong*)dest); | |
| 38 value += add_value; | |
| 39 Atomic::store((jlong)value, (volatile jlong*)dest); | |
| 40 } | |
| 0 | 41 |
| 42 // allocate using malloc; will fail if no memory available | |
| 43 inline char* AllocateHeap(size_t size, const char* name = NULL) { | |
| 44 char* p = (char*) os::malloc(size); | |
| 45 #ifdef ASSERT | |
| 46 if (PrintMallocFree) trace_heap_malloc(size, name, p); | |
| 47 #else | |
| 48 Unused_Variable(name); | |
| 49 #endif | |
| 50 if (p == NULL) vm_exit_out_of_memory(size, name); | |
| 51 return p; | |
| 52 } | |
| 53 | |
| 54 inline char* ReallocateHeap(char *old, size_t size, const char* name = NULL) { | |
| 55 char* p = (char*) os::realloc(old,size); | |
| 56 #ifdef ASSERT | |
| 57 if (PrintMallocFree) trace_heap_malloc(size, name, p); | |
| 58 #else | |
| 59 Unused_Variable(name); | |
| 60 #endif | |
| 61 if (p == NULL) vm_exit_out_of_memory(size, name); | |
| 62 return p; | |
| 63 } | |
| 64 | |
| 65 inline void FreeHeap(void* p) { | |
| 66 #ifdef ASSERT | |
| 67 if (PrintMallocFree) trace_heap_free(p); | |
| 68 #endif | |
| 69 os::free(p); | |
| 70 } | |
| 1972 | 71 |
| 72 #endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP |