55 lines
2.1 KiB
C
55 lines
2.1 KiB
C
/*
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* This file contains wrapper functions working with memory allocations,
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* they just terminate the program in case of memory allocation failure.
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* These functions can be used by various binaries included in the strace
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* package.
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*
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* Copyright (c) 2001-2018 The strace developers.
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* All rights reserved.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#ifndef STRACE_XMALLOC_H
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#define STRACE_XMALLOC_H
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#include <stddef.h>
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#include "gcc_compat.h"
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#define xcalloc strace_calloc
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#define xmalloc strace_malloc
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void *xcalloc(size_t nmemb, size_t size)
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ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2));
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void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
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void *xreallocarray(void *ptr, size_t nmemb, size_t size)
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ATTRIBUTE_ALLOC_SIZE((2, 3));
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/**
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* Utility function for the simplification of managing various dynamic arrays.
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* Knows better how to resize arrays. Dies if there's no enough memory.
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*
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* @param[in] ptr Pointer to the array to be resized. If ptr is NULL,
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* new array is allocated.
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* @param[in, out] nmemb Pointer to the current member count. If ptr is
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* NULL, it specifies number of members in the newly
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* created array. If ptr is NULL and nmemb is 0,
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* number of members in the new array is decided by
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* the function. Member count is updated by the
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* function to the new value.
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* @param[in] memb_size Size of array member in bytes.
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* @return Pointer to the (re)allocated array.
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*/
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void *xgrowarray(void *ptr, size_t *nmemb, size_t memb_size);
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/*
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* Note that the following two functions return NULL when NULL is specified
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* and not when allocation is failed, since, as the "x" prefix implies,
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* the allocation failure leads to program termination, so we may re-purpose
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* this return value and simplify the idiom "str ? xstrdup(str) : NULL".
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*/
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char *xstrdup(const char *str) ATTRIBUTE_MALLOC;
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char *xstrndup(const char *str, size_t n) ATTRIBUTE_MALLOC;
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#endif /* !STRACE_XMALLOC_H */
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