/*

 * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. The name of the author may not be used to endorse or promote products

 *    derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef MM_INTERNAL_H_INCLUDED_

#define MM_INTERNAL_H_INCLUDED_

#include <sys/types.h>

#ifdef __cplusplus

extern "C" {

#endif

#ifndef EVENT__DISABLE_MM_REPLACEMENT

/* Internal use only: Memory allocation functions. We give them nice short

 * mm_names for our own use, but make sure that the symbols have longer names

 * so they don't conflict with other libraries (like, say, libmm). */

/** Allocate uninitialized memory.

 *

 * @return On success, return a pointer to sz newly allocated bytes.

 *     On failure, set errno to ENOMEM and return NULL.

 *     If the argument sz is 0, simply return NULL.

 */

EVENT2_EXPORT_SYMBOL

void *event_mm_malloc_(size_t sz);

/** Allocate memory initialized to zero.

 *

 * @return On success, return a pointer to (count * size) newly allocated

 *     bytes, initialized to zero.

 *     On failure, or if the product would result in an integer overflow,

 *     set errno to ENOMEM and return NULL.

 *     If either arguments are 0, simply return NULL.

 */

EVENT2_EXPORT_SYMBOL

void *event_mm_calloc_(size_t count, size_t size);

/** Duplicate a string.

 *

 * @return On success, return a pointer to a newly allocated duplicate

 *     of a string.

 *     Set errno to ENOMEM and return NULL if a memory allocation error

 *     occurs (or would occur) in the process.

 *     If the argument str is NULL, set errno to EINVAL and return NULL.

 */

EVENT2_EXPORT_SYMBOL

char *event_mm_strdup_(const char *str);

EVENT2_EXPORT_SYMBOL

void *event_mm_realloc_(void *p, size_t sz);

EVENT2_EXPORT_SYMBOL

void event_mm_free_(void *p);

#define mm_malloc(sz) event_mm_malloc_(sz)

#define mm_calloc(count, size) event_mm_calloc_((count), (size))

#define mm_strdup(s) event_mm_strdup_(s)

#define mm_realloc(p, sz) event_mm_realloc_((p), (sz))

#define mm_free(p) event_mm_free_(p)

#else

#define mm_malloc(sz) malloc(sz)

#define mm_calloc(n, sz) calloc((n), (sz))

#define mm_strdup(s) strdup(s)

#define mm_realloc(p, sz) realloc((p), (sz))

#define mm_free(p) free(p)

#endif

#ifdef __cplusplus

}

#endif

#endif