/*

 * 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

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 */

#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, MEMFLAGS flags, address pc = 0) {

  if (pc == 0) {

    pc = CURRENT_PC;

  }

  char* p = (char*) os::malloc(size, flags, pc);

  #ifdef ASSERT

  if (PrintMallocFree) trace_heap_malloc(size, "AllocateHeap", p);

  #endif

  if (p == NULL) vm_exit_out_of_memory(size, "AllocateHeap");

  return p;

}

inline char* ReallocateHeap(char *old, size_t size, MEMFLAGS flags) {

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

  #ifdef ASSERT

  if (PrintMallocFree) trace_heap_malloc(size, "ReallocateHeap", p);

  #endif

  if (p == NULL) vm_exit_out_of_memory(size, "ReallocateHeap");

  return p;

}

inline void FreeHeap(void* p, MEMFLAGS memflags = mtInternal) {

  #ifdef ASSERT

  if (PrintMallocFree) trace_heap_free(p);

  #endif

  os::free(p, memflags);

}

template <MEMFLAGS F> void* CHeapObj<F>::operator new(size_t size,

      address caller_pc){

#ifdef ASSERT

    void* p = (void*)AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));

    if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);

    return p;

#else

    return (void *) AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));

#endif

  }

template <MEMFLAGS F> void* CHeapObj<F>::operator new (size_t size,

  const std::nothrow_t&  nothrow_constant, address caller_pc) {

#ifdef ASSERT

    void* p = os::malloc(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));

    if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);

    return p;

#else

    return os::malloc(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));

#endif

}

template <MEMFLAGS F> void CHeapObj<F>::operator delete(void* p){

   FreeHeap(p, F);

}

#endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP