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-'\" t
-.\" Copyright (C) 2001 Andries Brouwer <aeb@cwi.nl>.
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH unlocked_stdio 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-getc_unlocked, getchar_unlocked, putc_unlocked,
-putchar_unlocked \- nonlocking stdio functions
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <stdio.h>
-.P
-.BI "int getc_unlocked(FILE *" stream );
-.B "int getchar_unlocked(void);"
-.BI "int putc_unlocked(int " c ", FILE *" stream );
-.BI "int putchar_unlocked(int " c );
-.P
-.BI "void clearerr_unlocked(FILE *" stream );
-.BI "int feof_unlocked(FILE *" stream );
-.BI "int ferror_unlocked(FILE *" stream );
-.BI "int fileno_unlocked(FILE *" stream );
-.BI "int fflush_unlocked(FILE *_Nullable " stream );
-.P
-.BI "int fgetc_unlocked(FILE *" stream );
-.BI "int fputc_unlocked(int " c ", FILE *" stream );
-.P
-.BI "size_t fread_unlocked(void " ptr "[restrict ." size " * ." n ],
-.BI " size_t " size ", size_t " n ,
-.BI " FILE *restrict " stream );
-.BI "size_t fwrite_unlocked(const void " ptr "[restrict ." size " * ." n ],
-.BI " size_t " size ", size_t " n ,
-.BI " FILE *restrict " stream );
-.P
-.BI "char *fgets_unlocked(char " s "[restrict ." n "], int " n \
-", FILE *restrict " stream );
-.BI "int fputs_unlocked(const char *restrict " s ", FILE *restrict " stream );
-.P
-.B #include <wchar.h>
-.P
-.BI "wint_t getwc_unlocked(FILE *" stream );
-.B "wint_t getwchar_unlocked(void);"
-.BI "wint_t fgetwc_unlocked(FILE *" stream );
-.P
-.BI "wint_t fputwc_unlocked(wchar_t " wc ", FILE *" stream );
-.BI "wint_t putwc_unlocked(wchar_t " wc ", FILE *" stream );
-.BI "wint_t putwchar_unlocked(wchar_t " wc );
-.P
-.BI "wchar_t *fgetws_unlocked(wchar_t " ws "[restrict ." n "], int " n ,
-.BI " FILE *restrict " stream );
-.BI "int fputws_unlocked(const wchar_t *restrict " ws ,
-.BI " FILE *restrict " stream );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR \%getc_unlocked (),
-.BR \%getchar_unlocked (),
-.BR \%putc_unlocked (),
-.BR \%putchar_unlocked ():
-.nf
- /* glibc >= 2.24: */ _POSIX_C_SOURCE >= 199309L
- || /* glibc <= 2.23: */ _POSIX_C_SOURCE
- || /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE
-.fi
-.P
-.BR \%clearerr_unlocked (),
-.BR \%feof_unlocked (),
-.BR \%ferror_unlocked (),
-.BR \%fileno_unlocked (),
-.BR \%fflush_unlocked (),
-.BR \%fgetc_unlocked (),
-.BR \%fputc_unlocked (),
-.BR \%fread_unlocked (),
-.BR \%fwrite_unlocked ():
-.nf
- /* glibc >= 2.19: */ _DEFAULT_SOURCE
- || /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE
-.fi
-.P
-.BR \%fgets_unlocked (),
-.BR \%fputs_unlocked (),
-.BR \%getwc_unlocked (),
-.BR \%getwchar_unlocked (),
-.BR \%fgetwc_unlocked (),
-.BR \%fputwc_unlocked (),
-.BR \%putwchar_unlocked (),
-.BR \%fgetws_unlocked (),
-.BR \%fputws_unlocked ():
-.nf
- _GNU_SOURCE
-.fi
-.SH 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
-.BR flockfile (3).
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lb lb lbx
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR getc_unlocked (),
-.BR putc_unlocked (),
-.BR clearerr_unlocked (),
-.BR fflush_unlocked (),
-.BR fgetc_unlocked (),
-.BR fputc_unlocked (),
-.BR fread_unlocked (),
-.BR fwrite_unlocked (),
-.BR fgets_unlocked (),
-.BR fputs_unlocked (),
-.BR getwc_unlocked (),
-.BR fgetwc_unlocked (),
-.BR fputwc_unlocked (),
-.BR putwc_unlocked (),
-.BR fgetws_unlocked (),
-.BR fputws_unlocked ()
-T} Thread safety T{
-.na
-.nh
-MT-Safe race:stream
-T}
-T{
-.na
-.nh
-.BR getchar_unlocked (),
-.BR getwchar_unlocked ()
-T} Thread safety T{
-.na
-.nh
-MT-Unsafe race:stdin
-T}
-T{
-.na
-.nh
-.BR putchar_unlocked (),
-.BR putwchar_unlocked ()
-T} Thread safety T{
-.na
-.nh
-MT-Unsafe race:stdout
-T}
-T{
-.na
-.nh
-.BR feof_unlocked (),
-.BR ferror_unlocked (),
-.BR fileno_unlocked ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-.TP
-.BR getc_unlocked ()
-.TQ
-.BR getchar_unlocked ()
-.TQ
-.BR putc_unlocked ()
-.TQ
-.BR putchar_unlocked ()
-POSIX.1-2008.
-.TP
-Others:
-None.
-.SH HISTORY
-.TP
-.BR getc_unlocked ()
-.TQ
-.BR getchar_unlocked ()
-.TQ
-.BR putc_unlocked ()
-.TQ
-.BR putchar_unlocked ()
-POSIX.1-2001.
-.\" E.g., in HP-UX 10.0. In HP-UX 10.30 they are called obsolescent, and
-.\" moved to a compatibility library.
-.\" Available in HP-UX 10.0: clearerr_unlocked, fclose_unlocked,
-.\" feof_unlocked, ferror_unlocked, fflush_unlocked, fgets_unlocked,
-.\" fgetwc_unlocked, fgetws_unlocked, fileno_unlocked, fputs_unlocked,
-.\" fputwc_unlocked, fputws_unlocked, fread_unlocked, fseek_unlocked,
-.\" ftell_unlocked, fwrite_unlocked, getc_unlocked, getchar_unlocked,
-.\" getw_unlocked, getwc_unlocked, getwchar_unlocked, putc_unlocked,
-.\" putchar_unlocked, puts_unlocked, putws_unlocked, putw_unlocked,
-.\" putwc_unlocked, putwchar_unlocked, rewind_unlocked, setvbuf_unlocked,
-.\" ungetc_unlocked, ungetwc_unlocked.
-.SH SEE ALSO
-.BR flockfile (3),
-.BR stdio (3)