unlocked_stdio - Online Linux Manual PageSection : 3
Updated : 2023-02-05
Source : Linux man-pages 6.03
NAMEgetc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked − nonlocking stdio functions
LIBRARYStandard C library (libc, −lc)
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[restrict .size * .n],
size_t size, size_t n,
FILE *restrict stream);
size_t fwrite_unlocked(const void ptr[restrict .size * .n],
size_t size, size_t n,
FILE *restrict stream);char *fgets_unlocked(char s[restrict .n], int n, FILE *restrict stream);
int fputs_unlocked(const char *restrict s, FILE *restrict 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[restrict .n], int n,
FILE *restrict stream);
int fputws_unlocked(const wchar_t *restrict ws,
FILE *restrict stream);Feature Test Macro Requirements for glibc (see feature_test_macros(7)): getc_unlocked(), getchar_unlocked(), putc_unlocked(), putchar_unlocked(): /* glibc >= 2.24: */ _POSIX_C_SOURCE >= 199309L
|| /* glibc <= 2.23: */ _POSIX_C_SOURCE
|| /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCEclearerr_unlocked(), feof_unlocked(), ferror_unlocked(), fileno_unlocked(), fflush_unlocked(), fgetc_unlocked(), fputc_unlocked(), fread_unlocked(), fwrite_unlocked(): /* glibc >= 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCEfgets_unlocked(), fputs_unlocked(), getwc_unlocked(), getwchar_unlocked(), fgetwc_unlocked(), fputwc_unlocked(), putwchar_unlocked(), fgetws_unlocked(), fputws_unlocked(): _GNU_SOURCE
DESCRIPTIONEach 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).
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7). InterfaceAttributeValue getc_unlocked(), putc_unlocked(), clearerr_unlocked(), fflush_unlocked(), fgetc_unlocked(), fputc_unlocked(), fread_unlocked(), fwrite_unlocked(), fgets_unlocked(), fputs_unlocked(), getwc_unlocked(), fgetwc_unlocked(), fputwc_unlocked(), putwc_unlocked(), fgetws_unlocked(), fputws_unlocked() Thread safety MT-Safe race:stream getchar_unlocked(), getwchar_unlocked() Thread safety MT-Unsafe race:stdin putchar_unlocked(), putwchar_unlocked() Thread safety MT-Unsafe race:stdout feof_unlocked(), ferror_unlocked(), fileno_unlocked() Thread safetyMT-Safe
STANDARDSThe four functions getc_unlocked(), getchar_unlocked(), putc_unlocked(), putchar_unlocked() are in POSIX.1-2001 and POSIX.1-2008. The nonstandard *_unlocked() variants occur on a few UNIX systems, and are available in recent glibc. They should probably not be used.
SEE ALSOflockfile(3), stdio(3) 0
Johanes Gumabo
Data Size : 20,578 byte
man-fputc_unlocked.3Build : 2024-12-05, 20:55 :
Visitor Screen : x
Visitor Counter ( page / site ) : 4 / 185,175
Visitor ID : :
Visitor IP : 3.149.29.190 :
Visitor Provider : AMAZON-02 :
Provider Position ( lat x lon ) : 39.962500 x -83.006100 : x
Provider Accuracy Radius ( km ) : 1000 :
Provider City : Columbus :
Provider Province : Ohio , : ,
Provider Country : United States :
Provider Continent : North America :
Visitor Recorder : Version :
Visitor Recorder : Library :
Online Linux Manual Page : Version : Online Linux Manual Page - Fedora.40 - march=x86-64 - mtune=generic - 24.12.05
Online Linux Manual Page : Library : lib_c - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Online Linux Manual Page : Library : lib_m - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Data Base : Version : Online Linux Manual Page Database - 24.04.13 - march=x86-64 - mtune=generic - fedora-38
Data Base : Library : lib_c - 23.02.07 - march=x86-64 - mtune=generic - fedora.36
Very long time ago, I have the best tutor, Wenzel Svojanovsky . If someone knows the email address of Wenzel Svojanovsky , please send an email to johanes_gumabo@yahoo.co.id .
If error, please print screen and send to johanes_gumabo@yahoo.co.id
Under development. Support me via PayPal.