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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [stdio/] [putchar_u.c] - Blame information for rev 207

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1 207 jeremybenn
/*
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 * Copyright (c) 1990 The Regents of the University of California.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms are permitted
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 * provided that the above copyright notice and this paragraph are
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 * duplicated in all such forms and that any documentation,
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 * advertising materials, and other materials related to such
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 * distribution and use acknowledge that the software was developed
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 * by the University of California, Berkeley.  The name of the
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 * University may not be used to endorse or promote products derived
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 * from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 */
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/*
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FUNCTION
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<<putchar_unlocked>>---non-thread-safe version of putchar (macro)
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INDEX
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        putchar_unlocked
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SYNOPSIS
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        #include <stdio.h>
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        int putchar_unlocked(int <[ch]>);
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DESCRIPTION
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<<putchar_unlocked>> is a non-thread-safe version of <<putchar>>
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declared in <<stdio.h>>.  <<putchar_unlocked>> may only safely be used
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within a scope protected by flockfile() (or ftrylockfile()) and
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funlockfile().  These functions may safely be used in a multi-threaded
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program if and only if they are called while the invoking thread owns
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the ( FILE *) object, as is the case after a successful call to the
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flockfile() or ftrylockfile() functions.  If threads are disabled,
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then <<putchar_unlocked>> is equivalent to <<putchar>>.
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RETURNS
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See <<putchar>>.
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PORTABILITY
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POSIX 1003.1 requires <<putchar_unlocked>>.  <<putchar_unlocked>> may
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be implemented as a macro.
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Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
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<<lseek>>, <<read>>, <<sbrk>>, <<write>>.  */
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "%W% (Berkeley) %G%";
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#endif /* LIBC_SCCS and not lint */
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/*
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 * A subroutine version of the macro putchar_unlocked.
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 */
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#include <_ansi.h>
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#include <reent.h>
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#include <stdio.h>
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#undef putchar_unlocked
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int
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_DEFUN(_putchar_unlocked_r, (ptr, c),
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       struct _reent *ptr _AND
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       int c)
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{
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  return putc_unlocked (c, _stdout_r (ptr));
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}
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#ifndef _REENT_ONLY
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int
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_DEFUN(putchar_unlocked, (c),
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       int c)
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{
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  /* CHECK_INIT is (eventually) called by __swbuf.  */
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  return _putchar_unlocked_r (_REENT, c);
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}
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#endif

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