Thu, 28 Jun 2012 17:03:16 -0400
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
1 /*
2 * Copyright (c) 1997, 2010, 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 #include "precompiled.hpp"
26 #include "memory/resourceArea.hpp"
27 #include "utilities/growableArray.hpp"
28 #ifdef TARGET_OS_FAMILY_linux
29 # include "thread_linux.inline.hpp"
30 #endif
31 #ifdef TARGET_OS_FAMILY_solaris
32 # include "thread_solaris.inline.hpp"
33 #endif
34 #ifdef TARGET_OS_FAMILY_windows
35 # include "thread_windows.inline.hpp"
36 #endif
37 #ifdef TARGET_OS_FAMILY_bsd
38 # include "thread_bsd.inline.hpp"
39 #endif
40 #ifdef ASSERT
41 void GenericGrowableArray::set_nesting() {
42 if (on_stack()) {
43 _nesting = Thread::current()->resource_area()->nesting();
44 }
45 }
47 void GenericGrowableArray::check_nesting() {
48 // Check for insidious allocation bug: if a GrowableArray overflows, the
49 // grown array must be allocated under the same ResourceMark as the original.
50 // Otherwise, the _data array will be deallocated too early.
51 if (on_stack() &&
52 _nesting != Thread::current()->resource_area()->nesting()) {
53 fatal("allocation bug: GrowableArray could grow within nested ResourceMark");
54 }
55 }
56 #endif
58 void* GenericGrowableArray::raw_allocate(int elementSize) {
59 assert(_max >= 0, "integer overflow");
60 size_t byte_size = elementSize * (size_t) _max;
61 if (on_stack()) {
62 return (void*)resource_allocate_bytes(byte_size);
63 } else if (on_C_heap()) {
64 return (void*)AllocateHeap(byte_size, _memflags);
65 } else {
66 return _arena->Amalloc(byte_size);
67 }
68 }