libpthread/linuxthreads/restart.h

   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
  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
  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
  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 }