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   fgets_unlocked    ( 3 )

неблокирующие функции stdio (nonlocking stdio functions)

   Дубль

(статьи: clearerr_unlocked - неблокирующие функции stdio )

Имя (Name)

getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - nonlocking stdio functions


Синопсис (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 *restrict ptr, size_t size, size_t n, FILE *restrict stream); size_t fwrite_unlocked(const void *restrict ptr, size_t size, size_t n, FILE *restrict stream);

char *fgets_unlocked(char *restrict s, 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 *restrict ws, 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(): /* Since glibc 2.24: */ _POSIX_C_SOURCE >= 199309L || /* Glibc <= 2.23: */ _POSIX_C_SOURCE || /* Glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE

clearerr_unlocked(), feof_unlocked(), ferror_unlocked(), fileno_unlocked(), fflush_unlocked(), fgetc_unlocked(), fputc_unlocked(), fread_unlocked(), fwrite_unlocked(): /* Glibc since 2.19: */ _DEFAULT_SOURCE || /* Glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE

fgets_unlocked(), fputs_unlocked(), getwc_unlocked(), getwchar_unlocked(), fgetwc_unlocked(), fputwc_unlocked(), putwchar_unlocked(), fgetws_unlocked(), fputws_unlocked(): _GNU_SOURCE


Описание (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).


Атрибуты (Attributes)

For an explanation of the terms used in this section, see attributes(7).

┌─────────────────────┬───────────────┬──────────────────────────┐ │Interface Attribute Value │ ├─────────────────────┼───────────────┼──────────────────────────┤ │getc_unlocked(), │ Thread safety │ MT-Safe race:stream │ │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() │ │ │ ├─────────────────────┼───────────────┼──────────────────────────┤ │getchar_unlocked(), │ Thread safety │ MT-Unsafe race:stdin │ │getwchar_unlocked() │ │ │ ├─────────────────────┼───────────────┼──────────────────────────┤ │putchar_unlocked(), │ Thread safety │ MT-Unsafe race:stdout │ │putwchar_unlocked() │ │ │ ├─────────────────────┼───────────────┼──────────────────────────┤ │feof_unlocked(), │ Thread safety │ MT-Safe │ │ferror_unlocked(), │ │ │ │fileno_unlocked() │ │ │ └─────────────────────┴───────────────┴──────────────────────────┘


Стандарты (Conforming to)

The 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.


Смотри также (See also)

flockfile(3), stdio(3)