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/allocation.inline.hpp"
  27 #include "memory/resourceArea.hpp"
  28 #include "runtime/mutexLocker.hpp"
  29 #include "runtime/thread.inline.hpp"
  30 
  31 //------------------------------ResourceMark-----------------------------------
  32 debug_only(int ResourceArea::_warned;)      // to suppress multiple warnings
  33 
  34 // The following routines are declared in allocation.hpp and used everywhere:
  35 
  36 // Allocation in thread-local resource area
  37 extern char* resource_allocate_bytes(size_t size, AllocFailType alloc_failmode) {
  38   return Thread::current()->resource_area()->allocate_bytes(size, alloc_failmode);
  39 }
  40 extern char* resource_allocate_bytes(Thread* thread, size_t size, AllocFailType alloc_failmode) {
  41   return thread->resource_area()->allocate_bytes(size, alloc_failmode);
  42 }
  43 
  44 extern char* resource_reallocate_bytes( char *old, size_t old_size, size_t new_size, AllocFailType alloc_failmode){
  45   return (char*)Thread::current()->resource_area()->Arealloc(old, old_size, new_size, alloc_failmode);
  46 }
  47 
  48 extern void resource_free_bytes( char *old, size_t size ) {
  49   Thread::current()->resource_area()->Afree(old, size);
  50 }
  51 
  52 #ifdef ASSERT
  53 ResourceMark::ResourceMark(Thread *thread) {
  54   assert(thread == Thread::current(), "not the current thread");
  55   initialize(thread);
  56 }
  57 
  58 DeoptResourceMark::DeoptResourceMark(Thread *thread) {
  59   assert(thread == Thread::current(), "not the current thread");
  60   initialize(thread);
  61 }
  62 #endif
  63 
  64 
  65 //-------------------------------------------------------------------------------
  66 // Non-product code
  67 #ifndef PRODUCT
  68 
  69 void ResourceMark::free_malloced_objects() {
  70   Arena::free_malloced_objects(_chunk, _hwm, _max, _area->_hwm);
  71 }
  72 
  73 void DeoptResourceMark::free_malloced_objects() {
  74   Arena::free_malloced_objects(_chunk, _hwm, _max, _area->_hwm);
  75 }
  76 
  77 #endif