.\" Copyright (C) 2001 Andries Brouwer <aeb@cwi.nl>.
.\"
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.\" manual page may be incorrect or out-of-date.  The author(s) assume no
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.\" the source, must acknowledge the copyright and authors of this work.
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.\" Traducido por Miguel Pérez Ibars <mpi79470@alu.um.es> el 2-septiembre-2004
.\"
.TH UNLOCKED_STDIO 3  "18 octubre 2001" "" "Manual del Programador de Linux"
.SH NOMBRE
*_unlocked \- funciones no bloqueantes de stdio
.SH SINOPSIS
.nf
.B #include <stdio.h>
.sp
.BI "int getc_unlocked(FILE *" stream );
.BI "int getchar_unlocked(void);"
.BI "int putc_unlocked(int " c ", FILE *" stream );
.BI "int putchar_unlocked(int " c );
.sp
.BR "#define _BSD_SOURCE" " /* or _SVID_SOURCE or _GNU_SOURCE */
.B #include <stdio.h>
.sp
.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 *" stream );
.BI "int fgetc_unlocked(FILE *" stream );
.BI "int fputc_unlocked(int " c ", FILE *" stream );
.BI "size_t fread_unlocked(void *" ptr ", size_t " size ", size_t " n ,
.BI "  FILE *" stream );
.BI "size_t fwrite_unlocked(const void *" ptr ", size_t " size ", size_t " n ,
.BI "  FILE *" stream );
.sp
.B #define _GNU_SOURCE
.B #include <stdio.h>
.sp
.BI "char *fgets_unlocked(char *" s ", int " n ", FILE *" stream );
.BI "int fputs_unlocked(const char *" s ", FILE *" stream );
.sp
.B #define _GNU_SOURCE
.B #include <wchar.h>
.sp
.BI "wint_t getwc_unlocked(FILE *" stream );
.BI "wint_t getwchar_unlocked(void);"
.BI "wint_t fgetwc_unlocked(FILE *" stream );
.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 );
.BI "wchar_t *fgetws_unlocked(wchar_t *" ws ", int " n ", FILE *" stream );
.BI "int fputws_unlocked(const wchar_t *" ws ", FILE *" stream );
.fi
.SH DESCRIPCIÓN
Cada una de estas funciones tiene el mismo comportamiento que sus
homólogas sin el sufijo `_unlocked', salvo que no emplean bloqueo
(no establecen bloqueos por sí mismas, y no comprueban la presencia
de bloqueos establecidos por otros) y, por lo tanto, no son seguras en un entorno con hilos.
Véase
.BR flockfile (3).
.SH "CONFORME A"
Las cuatro funciones \fIgetc_unlocked\fP(), \fIgetchar_unlocked\fP(),
\fIputc_unlocked\fP(), \fIputchar_unlocked\fP() están especificadas en POSIX.1.
Las variantes no estándar de
.BR *_unlocked()
están presentes en unos pocos sistemas Unix, y están desponibles en versiones recientes de glibc.
.\" E.g., in HPUX 10.0. In HPUX 10.30 they are called obsolescent, and
.\" moved to a compatibility library.
.\" Available in HPUX 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.
No deberían ser utilizadas.
.SH "VÉASE TAMBIÉN"
.BR flockfile (3)