ec216c2634
Change the FILE locking to support kernel threads when linked with libpthread (which you haven't see yet). This requires that libc become thread-safe and thread-aware, testing __isthreaded before attempting to do lock/unlock calls. The impact on non-threaded programs is minor. This change works with libc_r, so it's the best compromise.
79 lines
2.5 KiB
C
79 lines
2.5 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.
|
|
*
|
|
* $Id$
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
/*
|
|
* Declare weak references in case the application is not linked
|
|
* with libpthread.
|
|
*/
|
|
#pragma weak _flockfile=_flockfile_stub
|
|
#pragma weak _flockfile_debug=_flockfile_debug_stub
|
|
#pragma weak _ftrylockfile=_ftrylockfile_stub
|
|
#pragma weak _funlockfile=_funlockfile_stub
|
|
|
|
/*
|
|
* This function is a stub for the _flockfile function in libpthread.
|
|
*/
|
|
void
|
|
_flockfile_stub(FILE *fp)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* This function is a stub for the _flockfile_debug function in libpthread.
|
|
*/
|
|
void
|
|
_flockfile_debug_stub(FILE *fp, char *fname, int lineno)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* This function is a stub for the _ftrylockfile function in libpthread.
|
|
*/
|
|
int
|
|
_ftrylockfile_stub(FILE *fp)
|
|
{
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* This function is a stub for the _funlockfile function in libpthread.
|
|
*/
|
|
void
|
|
_funlockfile_stub(FILE *fp)
|
|
{
|
|
}
|