Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/utilities/growableArray.cpp
src/share/vm/utilities/growableArray.cpp
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| 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 */ | |
| 24 | |
| 25 #include "precompiled.hpp" | |
| 26 #include "memory/resourceArea.hpp" | |
| 27 #include "runtime/thread.inline.hpp" | |
| 28 #include "utilities/growableArray.hpp" | |
| 29 | |
| 30 #ifdef ASSERT | |
| 31 void GenericGrowableArray::set_nesting() { | |
| 32 if (on_stack()) { | |
| 33 _nesting = Thread::current()->resource_area()->nesting(); | |
| 34 } | |
| 35 } | |
| 36 | |
| 37 void GenericGrowableArray::check_nesting() { | |
| 38 // Check for insidious allocation bug: if a GrowableArray overflows, the | |
| 39 // grown array must be allocated under the same ResourceMark as the original. | |
| 40 // Otherwise, the _data array will be deallocated too early. | |
| 41 if (on_stack() && | |
| 42 _nesting != Thread::current()->resource_area()->nesting()) { | |
| 43 fatal("allocation bug: GrowableArray could grow within nested ResourceMark"); | |
| 44 } | |
| 45 } | |
| 46 #endif | |
| 47 | |
| 48 void* GenericGrowableArray::raw_allocate(int elementSize) { | |
| 49 assert(_max >= 0, "integer overflow"); | |
| 50 size_t byte_size = elementSize * (size_t) _max; | |
| 51 if (on_stack()) { | |
| 52 return (void*)resource_allocate_bytes(byte_size); | |
| 53 } else if (on_C_heap()) { | |
| 54 return (void*)AllocateHeap(byte_size, _memflags); | |
| 55 } else { | |
| 56 return _arena->Amalloc(byte_size); | |
| 57 } | |
| 58 } |
