futex.h

Go to the documentation of this file.
00001 /*
00002  * Copyright (C) 2006 Jakub Jermar
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  * - Redistributions in binary form must reproduce the above copyright
00012  *   notice, this list of conditions and the following disclaimer in the
00013  *   documentation and/or other materials provided with the distribution.
00014  * - The name of the author may not be used to endorse or promote products
00015  *   derived from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00019  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00020  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00022  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00023  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00024  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00025  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00026  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  */
00028 
00035 #ifndef __FUTEX_H__
00036 #define __FUTEX_H__
00037 
00038 #include <arch/types.h>
00039 #include <typedefs.h>
00040 #include <synch/waitq.h>
00041 #include <genarch/mm/page_ht.h>
00042 #include <genarch/mm/page_pt.h>
00043 
00045 struct futex {
00046         __address paddr;        
00047         waitq_t wq;             
00048         link_t ht_link;         
00049         count_t refcount;       
00050 };
00051 
00052 extern void futex_init(void);
00053 extern __native sys_futex_sleep_timeout(__address uaddr, __u32 usec, int flags);
00054 extern __native sys_futex_wakeup(__address uaddr);
00055 
00056 extern void futex_cleanup(void);
00057 
00058 #endif
00059 

Generated on Sun Jun 18 17:28:03 2006 for HelenOS Kernel (ppc64) by  doxygen 1.4.6