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 }