1 /*
   2  * Copyright (c) 1997, 2017, 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.inline.hpp"
  28 #include "runtime/mutexLocker.hpp"
  29 #include "runtime/thread.inline.hpp"
  30 #include "services/memTracker.hpp"
  31 
  32 void ResourceArea::bias_to(MEMFLAGS new_flags) {
  33   if (new_flags != _flags) {
  34     MemTracker::record_arena_free(_flags);
  35     MemTracker::record_new_arena(new_flags);
  36     _flags = new_flags;
  37   }
  38 }
  39 
  40 //------------------------------ResourceMark-----------------------------------
  41 debug_only(int ResourceArea::_warned;)      // to suppress multiple warnings
  42 
  43 // The following routines are declared in allocation.hpp and used everywhere:
  44 
  45 // Allocation in thread-local resource area
  46 extern char* resource_allocate_bytes(size_t size, AllocFailType alloc_failmode) {
  47   return Thread::current()->resource_area()->allocate_bytes(size, alloc_failmode);
  48 }
  49 extern char* resource_allocate_bytes(Thread* thread, size_t size, AllocFailType alloc_failmode) {
  50   return thread->resource_area()->allocate_bytes(size, alloc_failmode);
  51 }
  52 
  53 extern char* resource_reallocate_bytes( char *old, size_t old_size, size_t new_size, AllocFailType alloc_failmode){
  54   return (char*)Thread::current()->resource_area()->Arealloc(old, old_size, new_size, alloc_failmode);
  55 }
  56 
  57 extern void resource_free_bytes( char *old, size_t size ) {
  58   Thread::current()->resource_area()->Afree(old, size);
  59 }
  60 
  61 #ifdef ASSERT
  62 ResourceMark::ResourceMark(Thread *thread) {
  63   assert(thread == Thread::current(), "not the current thread");
  64   initialize(thread);
  65 }
  66 
  67 DeoptResourceMark::DeoptResourceMark(Thread *thread) {
  68   assert(thread == Thread::current(), "not the current thread");
  69   initialize(thread);
  70 }
  71 #endif
  72 
  73 
  74 //-------------------------------------------------------------------------------
  75 // Non-product code
  76 #ifndef PRODUCT
  77 
  78 void ResourceMark::free_malloced_objects() {
  79   Arena::free_malloced_objects(_chunk, _hwm, _max, _area->_hwm);
  80 }
  81 
  82 void DeoptResourceMark::free_malloced_objects() {
  83   Arena::free_malloced_objects(_chunk, _hwm, _max, _area->_hwm);
  84 }
  85 
  86 #endif