libcilkrts/runtime/cilk_malloc.h

/* cilk_malloc.h                  -*-C++-*-
 *
 *************************************************************************
 *
 *  Copyright (C) 2009-2016, Intel Corporation
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 *  PLEASE NOTE: This file is a downstream copy of a file mainitained in
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 **************************************************************************/

/**
 * @file cilk_malloc.h
 *
 * @brief Provides replacement memory allocation functions to allocate
 * (and free) memory on cache line boundaries, if supported by the OS.
 *
 * If aligned memory functions are not provided by the OS, the calls just
 * pass through to the standard memory allocation functions.
 */

#ifndef INCLUDED_CILK_MALLOC_DOT_H
#define INCLUDED_CILK_MALLOC_DOT_H

#include <cilk/common.h>
#include <stddef.h>

#include "rts-common.h"

__CILKRTS_BEGIN_EXTERN_C

/**
 * malloc replacement function to allocate memory aligned on a cache line
 * boundary if aligned memory allocations are supported by the OS.
 *
 * @param size Number of bytes to allocate.
 *
 * @return pointer to memory block allocated, or NULL if unsuccessful.
 */
COMMON_PORTABLE void *__cilkrts_malloc(size_t size);

/**
 * realloc replacement function to allocate memory aligned on a cache line
 * boundary if aligned memory allocations are supported by the OS.
 *
 * @param ptr Block to be reallocated.
 * @param size Number of bytes to allocate.
 *
 * @return pointer to memory block allocated, or NULL if unsuccessful.
 */
COMMON_PORTABLE void *__cilkrts_realloc(void *ptr, size_t size);

/**
 * free replacement function to deallocate memory aligned on a cache line
 * boundary if aligned memory allocations are supported by the OS.
 *
 * @param ptr Block to be freed.
 */
COMMON_PORTABLE void __cilkrts_free(void *ptr);

__CILKRTS_END_EXTERN_C

#endif // ! defined(INCLUDED_CILK_MALLOC_DOT_H)