Name
getc_unlocked, getchar_unlocked, putc_unlocked,
putchar_unlocked, — non-locking stdio functions
Synopsis
#include <stdio.h>
int
getc_unlocked( |
FILE * |
stream) ; |
int
getchar_unlocked( |
void) ; |
|
int
putc_unlocked( |
int |
c, |
|
FILE * |
stream) ; |
int
putchar_unlocked( |
int |
c) ; |
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) ; |
char
*fgets_unlocked( |
char * |
s, |
|
int |
n, |
|
FILE * |
stream) ; |
int
fputs_unlocked( |
const char * |
s, |
|
FILE * |
stream) ; |
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) ; |
DESCRIPTION
Each of these functions has the same behavior 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).
CONFORMING TO
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.
SEE ALSO
flockfile(3), stdio(3), feature_test_macros(7)
Copyright (C) 2001 Andries Brouwer <aeb@cwi.nl>.
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|