214 lines
6.7 KiB
C++
214 lines
6.7 KiB
C++
/* xalloc.h -- malloc with out-of-memory checking
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Copyright (C) 1990-2000, 2003-2004, 2006-2022 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef XALLOC_H_
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#define XALLOC_H_
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdint.h>
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#if GNULIB_XALLOC
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# include "idx.h"
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# include "intprops.h"
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#endif
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#ifndef _GL_INLINE_HEADER_BEGIN
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#error "Please include config.h first."
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#endif
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_GL_INLINE_HEADER_BEGIN
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#ifndef XALLOC_INLINE
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# define XALLOC_INLINE _GL_INLINE
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if GNULIB_XALLOC_DIE
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/* This function is always triggered when memory is exhausted.
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It must be defined by the application, either explicitly
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or by using gnulib's xalloc-die module. This is the
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function to call when one wants the program to die because of a
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memory allocation failure. */
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/*extern*/ _Noreturn void xalloc_die (void);
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#endif /* GNULIB_XALLOC_DIE */
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#if GNULIB_XALLOC
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void *xmalloc (size_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *ximalloc (idx_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *xinmalloc (idx_t n, idx_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *xzalloc (size_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *xizalloc (idx_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *xcalloc (size_t n, size_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *xicalloc (idx_t n, idx_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *xrealloc (void *p, size_t s)
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_GL_ATTRIBUTE_ALLOC_SIZE ((2));
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void *xirealloc (void *p, idx_t s)
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_GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *xreallocarray (void *p, size_t n, size_t s)
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_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3));
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void *xireallocarray (void *p, idx_t n, idx_t s)
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_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *x2realloc (void *p, size_t *ps) /* superseded by xpalloc */
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_GL_ATTRIBUTE_RETURNS_NONNULL;
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void *x2nrealloc (void *p, size_t *pn, size_t s) /* superseded by xpalloc */
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_GL_ATTRIBUTE_RETURNS_NONNULL;
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void *xpalloc (void *pa, idx_t *pn, idx_t n_incr_min, ptrdiff_t n_max, idx_t s)
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_GL_ATTRIBUTE_RETURNS_NONNULL;
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void *xmemdup (void const *p, size_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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void *ximemdup (void const *p, idx_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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char *ximemdup0 (void const *p, idx_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_RETURNS_NONNULL;
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char *xstrdup (char const *str)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_RETURNS_NONNULL;
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/* In the following macros, T must be an elementary or structure/union or
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typedef'ed type, or a pointer to such a type. To apply one of the
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following macros to a function pointer or array type, you need to typedef
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it first and use the typedef name. */
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/* Allocate an object of type T dynamically, with error checking. */
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/* extern t *XMALLOC (typename t); */
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# define XMALLOC(t) ((t *) xmalloc (sizeof (t)))
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/* Allocate memory for N elements of type T, with error checking. */
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/* extern t *XNMALLOC (size_t n, typename t); */
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# define XNMALLOC(n, t) \
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((t *) (sizeof (t) == 1 ? xmalloc (n) : xnmalloc (n, sizeof (t))))
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/* Allocate an object of type T dynamically, with error checking,
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and zero it. */
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/* extern t *XZALLOC (typename t); */
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# define XZALLOC(t) ((t *) xzalloc (sizeof (t)))
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/* Allocate memory for N elements of type T, with error checking,
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and zero it. */
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/* extern t *XCALLOC (size_t n, typename t); */
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# define XCALLOC(n, t) \
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((t *) (sizeof (t) == 1 ? xzalloc (n) : xcalloc (n, sizeof (t))))
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/* Allocate an array of N objects, each with S bytes of memory,
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dynamically, with error checking. S must be nonzero. */
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void *xnmalloc (size_t n, size_t s)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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/* FIXME: Deprecate this in favor of xreallocarray? */
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/* Change the size of an allocated block of memory P to an array of N
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objects each of S bytes, with error checking. S must be nonzero. */
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XALLOC_INLINE void *xnrealloc (void *p, size_t n, size_t s)
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_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3));
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XALLOC_INLINE void *
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xnrealloc (void *p, size_t n, size_t s)
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{
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return xreallocarray (p, n, s);
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}
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/* Return a pointer to a new buffer of N bytes. This is like xmalloc,
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except it returns char *. */
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char *xcharalloc (size_t n)
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_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
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_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
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#endif /* GNULIB_XALLOC */
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#ifdef __cplusplus
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}
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#endif
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#if GNULIB_XALLOC && defined __cplusplus
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/* C++ does not allow conversions from void * to other pointer types
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without a cast. Use templates to work around the problem when
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possible. */
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template <typename T> inline T *
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xrealloc (T *p, size_t s)
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{
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return (T *) xrealloc ((void *) p, s);
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}
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template <typename T> inline T *
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xreallocarray (T *p, size_t n, size_t s)
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{
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return (T *) xreallocarray ((void *) p, n, s);
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}
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/* FIXME: Deprecate this in favor of xreallocarray? */
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template <typename T> inline T *
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xnrealloc (T *p, size_t n, size_t s)
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{
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return xreallocarray (p, n, s);
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}
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template <typename T> inline T *
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x2realloc (T *p, size_t *pn)
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{
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return (T *) x2realloc ((void *) p, pn);
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}
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template <typename T> inline T *
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x2nrealloc (T *p, size_t *pn, size_t s)
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{
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return (T *) x2nrealloc ((void *) p, pn, s);
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}
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template <typename T> inline T *
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xmemdup (T const *p, size_t s)
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{
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return (T *) xmemdup ((void const *) p, s);
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}
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#endif /* GNULIB_XALLOC && C++ */
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_GL_INLINE_HEADER_END
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#endif /* !XALLOC_H_ */
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