123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/*
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* SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef SHADOW_INCLUDE_LIB_MALLOC_H_
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#define SHADOW_INCLUDE_LIB_MALLOC_H_
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#include <config.h>
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#include <assert.h>
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#include <errno.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include "defines.h"
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#define ALLOCARRAY(n, type) ((type *) alloca(sizeof(type) * (n)))
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#define CALLOC(n, type) ((type *) calloc(n, sizeof(type)))
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#define XCALLOC(n, type) ((type *) xcalloc(n, sizeof(type)))
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#define MALLOCARRAY(n, type) ((type *) mallocarray(n, sizeof(type)))
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#define XMALLOCARRAY(n, type) ((type *) xmallocarray(n, sizeof(type)))
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#define ALLOCA(type) ALLOCARRAY(1, type)
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#define MALLOC(type) MALLOCARRAY(1, type)
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#define XMALLOC(type) XMALLOCARRAY(1, type)
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#define REALLOC(ptr, type) REALLOCARRAY(ptr, 1, type)
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#define REALLOCF(ptr, type) REALLOCARRAYF(ptr, 1, type)
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#define REALLOCARRAY(ptr, n, type) \
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({ \
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__auto_type p_ = (ptr); \
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\
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static_assert(__builtin_types_compatible_p(typeof(p_), type *), ""); \
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\
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(type *) reallocarray(p_, n, sizeof(type)); \
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})
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#define REALLOCARRAYF(ptr, n, type) \
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({ \
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__auto_type p_ = (ptr); \
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\
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static_assert(__builtin_types_compatible_p(typeof(p_), type *), ""); \
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\
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(type *) reallocarrayf(p_, n, sizeof(type)); \
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})
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#define XREALLOCARRAY(ptr, n, type) \
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({ \
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__auto_type p_ = (ptr); \
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\
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static_assert(__builtin_types_compatible_p(typeof(p_), type *), ""); \
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\
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(type *) xreallocarray(p_, n, sizeof(type)); \
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})
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ATTR_MALLOC(free)
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inline void *xmalloc(size_t size);
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ATTR_MALLOC(free)
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inline void *xmallocarray(size_t nmemb, size_t size);
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ATTR_MALLOC(free)
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inline void *mallocarray(size_t nmemb, size_t size);
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ATTR_MALLOC(free)
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inline void *reallocarrayf(void *p, size_t nmemb, size_t size);
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ATTR_MALLOC(free)
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inline char *xstrdup(const char *str);
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ATTR_MALLOC(free)
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void *xcalloc(size_t nmemb, size_t size);
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ATTR_MALLOC(free)
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void *xreallocarray(void *p, size_t nmemb, size_t size);
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inline void *
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xmalloc(size_t size)
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{
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return xmallocarray(1, size);
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}
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inline void *
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xmallocarray(size_t nmemb, size_t size)
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{
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return xreallocarray(NULL, nmemb, size);
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}
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inline void *
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mallocarray(size_t nmemb, size_t size)
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{
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return reallocarray(NULL, nmemb, size);
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}
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inline void *
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reallocarrayf(void *p, size_t nmemb, size_t size)
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{
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void *q;
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q = reallocarray(p, nmemb, size);
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/* realloc(p, 0) is equivalent to free(p); avoid double free. */
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if (q == NULL && nmemb != 0 && size != 0)
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free(p);
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return q;
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}
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inline char *
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xstrdup(const char *str)
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{
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return strcpy(XMALLOCARRAY(strlen(str) + 1, char), str);
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}
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#endif // include guard
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