1 /*
   2  * Copyright (c) 1997, 2005, 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 // Explicit C-heap memory management
  26 
  27 void trace_heap_malloc(size_t size, const char* name, void *p);
  28 void trace_heap_free(void *p);
  29 
  30 
  31 // allocate using malloc; will fail if no memory available
  32 inline char* AllocateHeap(size_t size, const char* name = NULL) {
  33   char* p = (char*) os::malloc(size);
  34   #ifdef ASSERT
  35   if (PrintMallocFree) trace_heap_malloc(size, name, p);
  36   #else
  37   Unused_Variable(name);
  38   #endif
  39   if (p == NULL) vm_exit_out_of_memory(size, name);
  40   return p;
  41 }
  42 
  43 inline char* ReallocateHeap(char *old, size_t size, const char* name = NULL) {
  44   char* p = (char*) os::realloc(old,size);
  45   #ifdef ASSERT
  46   if (PrintMallocFree) trace_heap_malloc(size, name, p);
  47   #else
  48   Unused_Variable(name);
  49   #endif
  50   if (p == NULL) vm_exit_out_of_memory(size, name);
  51   return p;
  52 }
  53 
  54 inline void FreeHeap(void* p) {
  55   #ifdef ASSERT
  56   if (PrintMallocFree) trace_heap_free(p);
  57   #endif
  58   os::free(p);
  59 }