/*

 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP

#define SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP

#include "runtime/os.hpp"

// Explicit C-heap memory management

void trace_heap_malloc(size_t size, const char* name, void *p);

void trace_heap_free(void *p);

#ifndef PRODUCT

// Increments unsigned long value for statistics (not atomic on MP).

inline void inc_stat_counter(volatile julong* dest, julong add_value) {

#if defined(SPARC) || defined(X86)

  // Sparc and X86 have atomic jlong (8 bytes) instructions

  julong value = Atomic::load((volatile jlong*)dest);

  value += add_value;

  Atomic::store((jlong)value, (volatile jlong*)dest);

#else

  // possible word-tearing during load/store

  *dest += add_value;

#endif

}

#endif

// allocate using malloc; will fail if no memory available

inline char* AllocateHeap(size_t size, const char* name = NULL) {

  char* p = (char*) os::malloc(size);

  #ifdef ASSERT

  if (PrintMallocFree) trace_heap_malloc(size, name, p);

  #else

  Unused_Variable(name);

  #endif

  if (p == NULL) vm_exit_out_of_memory(size, name);

  return p;

}

inline char* ReallocateHeap(char *old, size_t size, const char* name = NULL) {

  char* p = (char*) os::realloc(old,size);

  #ifdef ASSERT

  if (PrintMallocFree) trace_heap_malloc(size, name, p);

  #else

  Unused_Variable(name);

  #endif

  if (p == NULL) vm_exit_out_of_memory(size, name);

  return p;

}

inline void FreeHeap(void* p) {

  #ifdef ASSERT

  if (PrintMallocFree) trace_heap_free(p);

  #endif

  os::free(p);

}

#endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP