X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=gnu%2Fxalloc.h;h=a9595b8efc910bb0d8f0bf4965f326165ccc93ca;hb=daa269958ad8d50ef8154ccb65e58acaf7a6dd99;hp=e1da06274edee5e4fd4ee348a01217055532d49f;hpb=1a44d77d50f4fb37c0410eed04b82303624ea2ec;p=debian%2Ftar diff --git a/gnu/xalloc.h b/gnu/xalloc.h index e1da0627..a9595b8e 100644 --- a/gnu/xalloc.h +++ b/gnu/xalloc.h @@ -2,7 +2,7 @@ /* DO NOT EDIT! GENERATED AUTOMATICALLY! */ /* xalloc.h -- malloc with out-of-memory checking - Copyright (C) 1990-2000, 2003-2004, 2006-2011 Free Software Foundation, Inc. + Copyright (C) 1990-2000, 2003-2004, 2006-2013 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 @@ -18,40 +18,40 @@ along with this program. If not, see . */ #ifndef XALLOC_H_ -# define XALLOC_H_ +#define XALLOC_H_ -# include +#include +#include "xalloc-oversized.h" -# ifdef __cplusplus -extern "C" { -# endif +_GL_INLINE_HEADER_BEGIN +#ifndef XALLOC_INLINE +# define XALLOC_INLINE _GL_INLINE +#endif +#ifdef __cplusplus +extern "C" { +#endif -# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8) -# define _GL_ATTRIBUTE_NORETURN __attribute__ ((__noreturn__)) -# else -# define _GL_ATTRIBUTE_NORETURN /* empty */ -# endif -# if __GNUC__ >= 3 -# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) -# else -# define _GL_ATTRIBUTE_MALLOC -# endif +#if __GNUC__ >= 3 +# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) +#else +# define _GL_ATTRIBUTE_MALLOC +#endif -# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) -# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args)) -# else -# define _GL_ATTRIBUTE_ALLOC_SIZE(args) -# endif +#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) +# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args)) +#else +# define _GL_ATTRIBUTE_ALLOC_SIZE(args) +#endif /* 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 void xalloc_die (void) _GL_ATTRIBUTE_NORETURN; +extern _Noreturn void xalloc_die (void); void *xmalloc (size_t s) _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1)); @@ -67,22 +67,6 @@ void *xmemdup (void const *p, size_t s) char *xstrdup (char const *str) _GL_ATTRIBUTE_MALLOC; -/* Return 1 if an array of N objects, each of size S, cannot exist due - to size arithmetic overflow. S must be positive and N must be - nonnegative. This is a macro, not an inline function, so that it - works correctly even when SIZE_MAX < N. - - By gnulib convention, SIZE_MAX represents overflow in size - calculations, so the conservative dividend to use here is - SIZE_MAX - 1, since SIZE_MAX might represent an overflowed value. - However, malloc (SIZE_MAX) fails on all known hosts where - sizeof (ptrdiff_t) <= sizeof (size_t), so do not bother to test for - exactly-SIZE_MAX allocations on such hosts; this avoids a test and - branch when S is known to be 1. */ -# define xalloc_oversized(n, s) \ - ((size_t) (sizeof (ptrdiff_t) <= sizeof (size_t) ? -1 : -2) / (s) < (n)) - - /* 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 @@ -90,45 +74,31 @@ char *xstrdup (char const *str) /* Allocate an object of type T dynamically, with error checking. */ /* extern t *XMALLOC (typename t); */ -# define XMALLOC(t) ((t *) xmalloc (sizeof (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)))) +#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))) +#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)))) +#define XCALLOC(n, t) \ + ((t *) (sizeof (t) == 1 ? xzalloc (n) : xcalloc (n, sizeof (t)))) -# if HAVE_INLINE -# define static_inline static inline -# else -void *xnmalloc (size_t n, size_t s) - _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)); -void *xnrealloc (void *p, size_t n, size_t s) - _GL_ATTRIBUTE_ALLOC_SIZE ((2, 3)); -void *x2nrealloc (void *p, size_t *pn, size_t s); -char *xcharalloc (size_t n) - _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1)); -# endif - -# ifdef static_inline - /* Allocate an array of N objects, each with S bytes of memory, dynamically, with error checking. S must be nonzero. */ -static_inline void *xnmalloc (size_t n, size_t s) +XALLOC_INLINE void *xnmalloc (size_t n, size_t s) _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)); -static_inline void * +XALLOC_INLINE void * xnmalloc (size_t n, size_t s) { if (xalloc_oversized (n, s)) @@ -139,9 +109,9 @@ xnmalloc (size_t n, size_t s) /* 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. */ -static_inline void *xnrealloc (void *p, size_t n, size_t s) +XALLOC_INLINE void *xnrealloc (void *p, size_t n, size_t s) _GL_ATTRIBUTE_ALLOC_SIZE ((2, 3)); -static_inline void * +XALLOC_INLINE void * xnrealloc (void *p, size_t n, size_t s) { if (xalloc_oversized (n, s)) @@ -204,7 +174,7 @@ xnrealloc (void *p, size_t n, size_t s) */ -static_inline void * +XALLOC_INLINE void * x2nrealloc (void *p, size_t *pn, size_t s) { size_t n = *pn; @@ -215,9 +185,9 @@ x2nrealloc (void *p, size_t *pn, size_t s) { /* The approximate size to use for initial small allocation requests, when the invoking code specifies an old size of - zero. 64 bytes is the largest "small" request for the - GNU C library malloc. */ - enum { DEFAULT_MXFAST = 64 }; + zero. This is the largest "small" request for the GNU C + library malloc. */ + enum { DEFAULT_MXFAST = 64 * sizeof (size_t) / 4 }; n = DEFAULT_MXFAST / s; n += !n; @@ -241,17 +211,15 @@ x2nrealloc (void *p, size_t *pn, size_t s) /* Return a pointer to a new buffer of N bytes. This is like xmalloc, except it returns char *. */ -static_inline char *xcharalloc (size_t n) +XALLOC_INLINE char *xcharalloc (size_t n) _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1)); -static_inline char * +XALLOC_INLINE char * xcharalloc (size_t n) { return XNMALLOC (n, char); } -# endif - -# ifdef __cplusplus +#ifdef __cplusplus } /* C++ does not allow conversions from void * to other pointer types @@ -288,7 +256,7 @@ xmemdup (T const *p, size_t s) return (T *) xmemdup ((void const *) p, s); } -# endif +#endif #endif /* !XALLOC_H_ */