67 lines
2.7 KiB
C
67 lines
2.7 KiB
C
/*
|
|
* Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by John Birrell.
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $Id: libc_private.h,v 1.1 1998/04/11 06:57:33 jb Exp $
|
|
*
|
|
* Private definitions for libc, libc_r and libpthread.
|
|
*
|
|
*/
|
|
|
|
#ifndef _LIBC_PRIVATE_H_
|
|
#define _LIBC_PRIVATE_H_
|
|
|
|
/*
|
|
* This global flag is non-zero when a process has created one
|
|
* or more threads. It is used to avoid calling locking functions
|
|
* when they are not required.
|
|
*/
|
|
extern int __isthreaded;
|
|
|
|
/*
|
|
* File lock contention is difficult to diagnose without knowing
|
|
* where locks were set. Allow a debug library to be built which
|
|
* records the source file and line number of each lock call.
|
|
*/
|
|
#ifdef _FLOCK_DEBUG
|
|
#define _FLOCKFILE(x) _flockfile_debug(x, __FILE__, __LINE__)
|
|
#else
|
|
#define _FLOCKFILE(x) flockfile(x)
|
|
#endif
|
|
|
|
/*
|
|
* Macros for locking and unlocking FILEs. These test if the
|
|
* process is threaded to avoid locking when not required.
|
|
*/
|
|
#define FLOCKFILE(fp) if (__isthreaded) _FLOCKFILE(fp)
|
|
#define FUNLOCKFILE(fp) if (__isthreaded) funlockfile(fp)
|
|
|
|
#endif /* _LIBC_PRIVATE_H_ */
|