.\" Copyright (C) 2001 Andries Brouwer <aeb@cwi.nl>.
.\"
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.\" manual provided the copyright notice and this permission notice are
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.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date.  The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
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.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
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.\" 
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.TH UNLOCKED_STDIO 3  2001-10-18 "" "Linux Programmer's Manual"
.SH NAME
*_unlocked \- 非鎖定的標準輸入輸出函數
.SH "SYNOPSIS 總覽"
.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 "DESCRIPTION 描述"
這些函數中每一個都與它沒有 `_unlocked` 延伸檔名的對應版本行為一致，但是它們不使用鎖定 (它們不自行設置鎖定，也不判斷是否有其他函數設置的鎖定) ，因此是非線程安全的。參見
.BR flockfile (3)
。
.SH "CONFORMING TO 標準參考"
下面四個函數 \fIgetc_unlocked\fP(), \fIgetchar_unlocked\fP(),
\fIputc_unlocked\fP(), \fIputchar_unlocked\fP() 包含在 POSIX.1 中。非標準的
.BR *_unlocked()
變種在少數 Unix 系統中出現，較新的 glibc 中也提供了它們。
.\" 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.
它們不應當被使用。
.SH "SEE ALSO 參見"
.BR flockfile (3)