Subversion Repositories openrisc_2011-10-31

/*

 * Copyright (c) 1990 The Regents of the University of California.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms are permitted

 * provided that the above copyright notice and this paragraph are

 * duplicated in all such forms and that any documentation,

 * advertising materials, and other materials related to such

 * distribution and use acknowledge that the software was developed

 * by the University of California, Berkeley.  The name of the

 * University may not be used to endorse or promote products derived

 * from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */

/*

FUNCTION

<<putchar_unlocked>>---non-thread-safe version of putchar (macro)

INDEX

        putchar_unlocked

SYNOPSIS

        #include <stdio.h>

        int putchar_unlocked(int <[ch]>);

DESCRIPTION

<<putchar_unlocked>> is a non-thread-safe version of <<putchar>>

declared in <<stdio.h>>.  <<putchar_unlocked>> may only safely be used

within a scope protected by flockfile() (or ftrylockfile()) and

funlockfile().  These functions may safely be used in a multi-threaded

program if and only if they are called while the invoking thread owns

the ( FILE *) object, as is the case after a successful call to the

flockfile() or ftrylockfile() functions.  If threads are disabled,

then <<putchar_unlocked>> is equivalent to <<putchar>>.

RETURNS

See <<putchar>>.

PORTABILITY

POSIX 1003.1 requires <<putchar_unlocked>>.  <<putchar_unlocked>> may

be implemented as a macro.

Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,

<<lseek>>, <<read>>, <<sbrk>>, <<write>>.  */

#if defined(LIBC_SCCS) && !defined(lint)

static char sccsid[] = "%W% (Berkeley) %G%";

#endif /* LIBC_SCCS and not lint */

/*

 * A subroutine version of the macro putchar_unlocked.

 */

#include <_ansi.h>

#include <reent.h>

#include <stdio.h>

#undef putchar_unlocked

int

_DEFUN(_putchar_unlocked_r, (ptr, c),

       struct _reent *ptr _AND

       int c)

{

  return putc_unlocked (c, _stdout_r (ptr));

}

#ifndef _REENT_ONLY

int

_DEFUN(putchar_unlocked, (c),

       int c)

{

  /* CHECK_INIT is (eventually) called by __swbuf.  */

  return _putchar_unlocked_r (_REENT, c);

}

#endif