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/*
* This file contains wrapper functions working with memory allocations,
* they just terminate the program in case of memory allocation failure.
* These functions can be used by various binaries included in the strace
* package.
*
* Copyright (c) 2001-2017 The strace developers.
* All rights reserved.
*
* 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 STRACE_XMALLOC_H
#define STRACE_XMALLOC_H
#include <stddef.h>
#include "gcc_compat.h"
#define xcalloc strace_calloc
#define xmalloc strace_malloc
void *xcalloc(size_t nmemb, size_t size)
ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2));
void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
void *xreallocarray(void *ptr, size_t nmemb, size_t size)
ATTRIBUTE_ALLOC_SIZE((2, 3));
/**
* Utility function for the simplification of managing various dynamic arrays.
* Knows better how to resize arrays. Dies if there's no enough memory.
*
* @param[in] ptr Pointer to the array to be resized. If ptr is NULL,
* new array is allocated.
* @param[in, out] nmemb Pointer to the current member count. If ptr is
* NULL, it specifies number of members in the newly
* created array. If ptr is NULL and nmemb is 0,
* number of members in the new array is decided by
* the function. Member count is updated by the
* function to the new value.
* @param[in] memb_size Size of array member in bytes.
* @return Pointer to the (re)allocated array.
*/
void *xgrowarray(void *ptr, size_t *nmemb, size_t memb_size);
/*
* Note that the following two functions return NULL when NULL is specified
* and not when allocation is failed, since, as the "x" prefix implies,
* the allocation failure leads to program termination, so we may re-purpose
* this return value and simplify the idiom "str ? xstrdup(str) : NULL".
*/
char *xstrdup(const char *str) ATTRIBUTE_MALLOC;
char *xstrndup(const char *str, size_t n) ATTRIBUTE_MALLOC;
#endif /* !STRACE_XMALLOC_H */
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