sortix-mirror/libc/stdio/fregister.c

32 lines
1.1 KiB
C

/*
* Copyright (c) 2011, 2012, 2013, 2014 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* stdio/fregister.c
* Registers a FILE in the global list of open FILEs.
*/
#include <pthread.h>
#include <stdio.h>
void fregister(FILE* fp)
{
pthread_mutex_lock(&__first_file_lock);
fp->flags |= _FILE_REGISTERED;
if ( (fp->next = __first_file) )
__first_file->prev = fp;
__first_file = fp;
pthread_mutex_unlock(&__first_file_lock);
}