GNU/Linux man pages
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Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 5.2 |
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ferror_unlocked(3) |
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*_unlocked − non-locking stdio functions
#include <stdio.h>
int
getc_unlocked(FILE *stream);
int getchar_unlocked(void);
int putc_unlocked(int c, FILE
*stream);
int putchar_unlocked(int c);
#define
_BSD_SOURCE /* or _SVID_SOURCE or _GNU_SOURCE */
#include <stdio.h>
void
clearerr_unlocked(FILE *stream);
int feof_unlocked(FILE *stream);
int ferror_unlocked(FILE *stream);
int fileno_unlocked(FILE *stream);
int fflush_unlocked(FILE *stream);
int fgetc_unlocked(FILE *stream);
int fputc_unlocked(int c, FILE
*stream);
size_t fread_unlocked(void *ptr, size_t
size, size_t n,
FILE *stream);
size_t fwrite_unlocked(const void *ptr,
size_t size, size_t n,
FILE *stream);
#define
_GNU_SOURCE
#include <stdio.h>
char
*fgets_unlocked(char *s, int n,
FILE *stream);
int fputs_unlocked(const char *s, FILE
*stream);
#define
_GNU_SOURCE
#include <wchar.h>
wint_t
getwc_unlocked(FILE *stream);
wint_t getwchar_unlocked(void);
wint_t fgetwc_unlocked(FILE *stream);
wint_t fputwc_unlocked(wchar_t wc, FILE
*stream);
wint_t putwc_unlocked(wchar_t wc, FILE
*stream);
wint_t putwchar_unlocked(wchar_t wc);
wchar_t *fgetws_unlocked(wchar_t *ws, int
n, FILE *stream);
int fputws_unlocked(const wchar_t *ws, FILE
*stream);
Each of these functions has the same behaviour as its counterpart without the ’_unlocked’ suffix, except that they do not use locking (they do not set locks themselves, and do not test for the presence of locks set by others) and hence are thread-unsafe. See flockfile(3).
The four functions getc_unlocked(), getchar_unlocked(), putc_unlocked(), putchar_unlocked() are in POSIX.1-2001.
The nonstandard *_unlocked() variants occur on a few Unix systems, and are available in recent glibc. They should probably not be used.
flockfile(3), stdio(3), feature_test_macros(7)
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ferror_unlocked(3) | |