1 /* Linuxthreads - a simple clone()-based implementation of Posix        */
2 /* threads for Linux.                                                   */
3 /* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr)              */
4 /*                                                                      */
5 /* This program is free software; you can redistribute it and/or        */
6 /* modify it under the terms of the GNU Library General Public License  */
7 /* as published by the Free Software Foundation; either version 2       */
8 /* of the License, or (at your option) any later version.               */
9 /*                                                                      */
10 /* This program is distributed in the hope that it will be useful,      */
11 /* but WITHOUT ANY WARRANTY; without even the implied warranty of       */
12 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        */
13 /* GNU Library General Public License for more details.                 */
14 
15 #include <signal.h>
16 #include <sys/syscall.h>
17 #define __ASSUME_REALTIME_SIGNALS defined(__NR_rt_sigaction)
18 
19 /* Primitives for controlling thread execution */
20 
restart(pthread_descr th)21 static __inline__ void restart(pthread_descr th)
22 {
23   /* See pthread.c */
24 #if __ASSUME_REALTIME_SIGNALS
25   __pthread_restart_new(th);
26 #else
27   __pthread_restart(th);
28 #endif
29 }
30 
suspend(pthread_descr self)31 static __inline__ void suspend(pthread_descr self)
32 {
33   /* See pthread.c */
34 #if __ASSUME_REALTIME_SIGNALS
35   __pthread_wait_for_restart_signal(self);
36 #else
37   __pthread_suspend(self);
38 #endif
39 }
40 
timedsuspend(pthread_descr self,const struct timespec * abstime)41 static __inline__ int timedsuspend(pthread_descr self,
42 		const struct timespec *abstime)
43 {
44   /* See pthread.c */
45 #if __ASSUME_REALTIME_SIGNALS
46   return __pthread_timedsuspend_new(self, abstime);
47 #else
48   return __pthread_timedsuspend(self, abstime);
49 #endif
50 }
51