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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [stdio/] [putchar_u.c] - Rev 551
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/* * 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
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