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  */
  24 
  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 ASSERT
  38 void GenericGrowableArray::set_nesting() {
  39   if (on_stack()) {
  40     _nesting = Thread::current()->resource_area()->nesting();
  41   }
  42 }
  43 
  44 void GenericGrowableArray::check_nesting() {
  45   // Check for insidious allocation bug: if a GrowableArray overflows, the
  46   // grown array must be allocated under the same ResourceMark as the original.
  47   // Otherwise, the _data array will be deallocated too early.
  48   if (on_stack() &&
  49       _nesting != Thread::current()->resource_area()->nesting()) {
  50     fatal("allocation bug: GrowableArray could grow within nested ResourceMark");
  51   }
  52 }
  53 #endif
  54 
  55 void* GenericGrowableArray::raw_allocate(int elementSize) {
  56   assert(_max >= 0, "integer overflow");
  57   size_t byte_size = elementSize * (size_t) _max;
  58   if (on_stack()) {
  59     return (void*)resource_allocate_bytes(byte_size);
  60   } else if (on_C_heap()) {
  61     return (void*)AllocateHeap(byte_size, "GrET in " __FILE__);
  62   } else {
  63     return _arena->Amalloc(byte_size);
  64   }
  65 }