interpretor/preprocessor/faust-0.9.47mr3/architecture/osclib/faust/src/threads/pthreads_impl.cpp

   1 /*
   2
   3   Copyright (C) 2011 Grame
   4
   5   This library is free software; you can redistribute it and/or
   6   modify it under the terms of the GNU Lesser General Public
   7   License as published by the Free Software Foundation; either
   8   version 2.1 of the License, or (at your option) any later version.
   9
  10   This library 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 GNU
  13   Lesser General Public License for more details.
  14
  15   You should have received a copy of the GNU Lesser General Public
  16   License along with this library; if not, write to the Free Software
  17   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18
  19   Grame Research Laboratory, 9 rue du Garet, 69001 Lyon - France
  20   research@grame.fr
  21
  22 */
  23
  24 #ifdef WIN32
  25
  26 #else
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <sys/types.h>
  31 #include <unistd.h>
  32
  33 #include "TThreads.h"
  34
  35
  36 //_____________________________________________________________________
  37 static void * baseThreadProc (void * ptr)
  38 {
  39         TThreads* thread = (TThreads*)ptr;
  40         thread->running (true);
  41         thread->run();
  42         thread->running (false);
  43         return 0;
  44 }
  45
  46 //_____________________________________________________________________
  47 TThreads::TThreads () : fRunning(false), fThread(0) {}
  48
  49 //_____________________________________________________________________
  50 int     TThreads::SetPriority (int priority)
  51 {
  52         if (fThread) {
  53                 struct sched_param param;
  54
  55                 param.sched_priority = priority;
  56                 if (!pthread_setschedparam (fThread, SCHED_OTHER, &param))
  57                         return true;
  58         }
  59         return false;
  60 }
  61
  62 //_____________________________________________________________________
  63 bool TThreads::start (int priority)
  64 {
  65         int ret = pthread_create(&fThread, NULL, baseThreadProc, this);
  66         if (!ret) {
  67                 SetPriority (priority);
  68                 return true;
  69         }
  70         return false;
  71 }
  72
  73 //_____________________________________________________________________
  74 void TThreads::quit ()
  75 {
  76         if (fThread) {
  77                 void *threadRet;
  78                 pthread_cancel (fThread);
  79                 pthread_join (fThread, &threadRet);
  80                 fThread = 0;
  81         }
  82 }
  83 #endif