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/* xalloc.h -- malloc with out-of-memory checking
Copyright (C) 1990-2000, 2003-2004, 2006-2021 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef XALLOC_H_
#define XALLOC_H_
#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>
#if GNULIB_XALLOC
# include "idx.h"
# include "intprops.h"
#endif
#ifndef _GL_INLINE_HEADER_BEGIN
#error "Please include config.h first."
#endif
_GL_INLINE_HEADER_BEGIN
#ifndef XALLOC_INLINE
# define XALLOC_INLINE _GL_INLINE
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if GNULIB_XALLOC_DIE
/* This function is always triggered when memory is exhausted.
It must be defined by the application, either explicitly
or by using gnulib's xalloc-die module. This is the
function to call when one wants the program to die because of a
memory allocation failure. */
/*extern*/ _Noreturn void xalloc_die (void);
#endif /* GNULIB_XALLOC_DIE */
#if GNULIB_XALLOC
void *xmalloc (size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *ximalloc (idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xzalloc (size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xizalloc (idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xcalloc (size_t n, size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xicalloc (idx_t n, idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xrealloc (void *p, size_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2));
void *xirealloc (void *p, idx_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *xreallocarray (void *p, size_t n, size_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3));
void *xireallocarray (void *p, idx_t n, idx_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *x2realloc (void *p, size_t *ps) /* superseded by xpalloc */
_GL_ATTRIBUTE_RETURNS_NONNULL;
void *x2nrealloc (void *p, size_t *pn, size_t s) /* superseded by xpalloc */
_GL_ATTRIBUTE_RETURNS_NONNULL;
void *xpalloc (void *pa, idx_t *pn, idx_t n_incr_min, ptrdiff_t n_max, idx_t s)
_GL_ATTRIBUTE_RETURNS_NONNULL;
void *xmemdup (void const *p, size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
void *ximemdup (void const *p, idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
char *ximemdup0 (void const *p, idx_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_RETURNS_NONNULL;
char *xstrdup (char const *str)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_RETURNS_NONNULL;
/* In the following macros, T must be an elementary or structure/union or
typedef'ed type, or a pointer to such a type. To apply one of the
following macros to a function pointer or array type, you need to typedef
it first and use the typedef name. */
/* Allocate an object of type T dynamically, with error checking. */
/* extern t *XMALLOC (typename t); */
# define XMALLOC(t) ((t *) xmalloc (sizeof (t)))
/* Allocate memory for N elements of type T, with error checking. */
/* extern t *XNMALLOC (size_t n, typename t); */
# define XNMALLOC(n, t) \
((t *) (sizeof (t) == 1 ? xmalloc (n) : xnmalloc (n, sizeof (t))))
/* Allocate an object of type T dynamically, with error checking,
and zero it. */
/* extern t *XZALLOC (typename t); */
# define XZALLOC(t) ((t *) xzalloc (sizeof (t)))
/* Allocate memory for N elements of type T, with error checking,
and zero it. */
/* extern t *XCALLOC (size_t n, typename t); */
# define XCALLOC(n, t) \
((t *) (sizeof (t) == 1 ? xzalloc (n) : xcalloc (n, sizeof (t))))
/* Allocate an array of N objects, each with S bytes of memory,
dynamically, with error checking. S must be nonzero. */
void *xnmalloc (size_t n, size_t s)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
/* FIXME: Deprecate this in favor of xreallocarray? */
/* Change the size of an allocated block of memory P to an array of N
objects each of S bytes, with error checking. S must be nonzero. */
XALLOC_INLINE void *xnrealloc (void *p, size_t n, size_t s)
_GL_ATTRIBUTE_ALLOC_SIZE ((2, 3));
XALLOC_INLINE void *
xnrealloc (void *p, size_t n, size_t s)
{
return xreallocarray (p, n, s);
}
/* Return a pointer to a new buffer of N bytes. This is like xmalloc,
except it returns char *. */
char *xcharalloc (size_t n)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
#endif /* GNULIB_XALLOC */
#ifdef __cplusplus
}
#endif
#if GNULIB_XALLOC && defined __cplusplus
/* C++ does not allow conversions from void * to other pointer types
without a cast. Use templates to work around the problem when
possible. */
template <typename T> inline T *
xrealloc (T *p, size_t s)
{
return (T *) xrealloc ((void *) p, s);
}
template <typename T> inline T *
xreallocarray (T *p, size_t n, size_t s)
{
return (T *) xreallocarray ((void *) p, n, s);
}
/* FIXME: Deprecate this in favor of xreallocarray? */
template <typename T> inline T *
xnrealloc (T *p, size_t n, size_t s)
{
return xreallocarray (p, n, s);
}
template <typename T> inline T *
x2realloc (T *p, size_t *pn)
{
return (T *) x2realloc ((void *) p, pn);
}
template <typename T> inline T *
x2nrealloc (T *p, size_t *pn, size_t s)
{
return (T *) x2nrealloc ((void *) p, pn, s);
}
template <typename T> inline T *
xmemdup (T const *p, size_t s)
{
return (T *) xmemdup ((void const *) p, s);
}
#endif /* GNULIB_XALLOC && C++ */
_GL_INLINE_HEADER_END
#endif /* !XALLOC_H_ */
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