UNLOCKED_STDIO
NAMESYNOPSIS
DESCRIPTION
CONFORMING TO
SEE ALSO
COLOPHON
NAME
getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked − nonlocking 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);
#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);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
getc_unlocked(), getchar_unlocked(), putc_unlocked(), putchar_unlocked():
_POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE || _BSD_SOURCE || _SVID_SOURCE
clearerr_unlocked(), feof_unlocked(), ferror_unlocked(), fileno_unlocked(), fflush_unlocked(), fgetc_unlocked(), fputc_unlocked(), fread_unlocked(), fwrite_unlocked():
_BSD_SOURCE || _SVID_SOURCE
fgets_unlocked(), fputs_unlocked(), getwc_unlocked(), getwchar_unlocked(), fgetwc_unlocked(), fputwc_unlocked(), putwchar_unlocked(), fgetws_unlocked(), fputws_unlocked():
_GNU_SOURCE
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
COLOPHON
This page is part of release 3.69 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man−pages/.
More Linux Commands
manpages/keyctl_reject.3.html
keyctl_reject(3) - Negatively instantiate a key specifying s
keyctl_assume_authority() assumes the authority for the calling thread to deal with and instantiate the specified uninstantiated key. The calling thread must ha
manpages/sasl_dispose.3.html
sasl_dispose(3) - Dispose of a SASL connection object.......
sasl_dispose is called when a SASL connection object is no longer needed. Note that this is usually when the protocol session is done NOT when the authenticatio
manpages/glutInit.3.html
glutInit(3) - initialize the GLUT library. - Linux man page
glutInit will initialize the GLUT library and negotiate a session with the window system. During this process, glutInit may cause the termination of the GLUT pr
manpages/versionsort.3.html
versionsort(3) - scan a directory for matching entries......
The scandir() function scans the directory dirp, calling filter() on each directory entry. Entries for which filter() returns nonzero are stored in strings allo
manpages/gvmap.sh.1.html
gvmap.sh(1) - pipeline for running gvmap - Linux man page...
gvmap.sh takes as input a graph in DOT format, performs a layout, runs the output through gvmap and renders the output. At some point, it is hoped to integrate
manpages/zshmisc.1.html
zshmisc(1) - everything and then some - Linux manual page...
A simple command is a sequence of optional parameter assignments followed by blankseparated words, with optional redirections interspersed. For a descriptio....
manpages/keyok_sp.3ncurses.html
keyok_sp(3ncurses) - curses screen-pointer extension........
This implementation can be configured to provide a set of functions which improve the ability to manage multiple screens. This feature can be added to any of th
manpages/getutid_r.3.html
getutid_r(3) - access utmp file entries - Linux manual page
New applications should use the POSIX.1-specified utmpx versions of these functions; see CONFORMING TO. utmpname() sets the name of the utmp-format file for the
manpages/delete_module.2.html
delete_module(2) - delete a loadable module entry (ManPage)
The delete_module() system call attempts to remove the unused loadable module entry identified by name. If the module has an exit function, then that function i
manpages/pcap-tstamp.7.html
pcap-tstamp(7) packet time stamps in libpcap (Man Page).....
When capturing traffic, each packet is given a time stamp representing, for incoming packets, the arrival time of the packet and, for outgoing packets, the tran
manpages/sasl_getopt_t.3.html
sasl_getopt_t(3) - The SASL get option callback (Man Page)
sasl_getopt_t is used to retrieve an option, often mechanism specific, from the application. An example of this is requested what KERBEROS_V4 srvtab file to use
manpages/XineramaQueryVersion.3.html
XineramaQueryVersion(3) - API for Xinerama extension to X11
Xinerama is a simple library designed to interface the Xinerama Extension for retrieving information about physical output devices which may be combined into a
