include/lang/PyrSched.h

   1 /*
   2         SuperCollider real time audio synthesis system
   3     Copyright (c) 2002 James McCartney. All rights reserved.
   4         http://www.audiosynth.com
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
  19 */
  20
  21 #ifndef _PYRSCHED_H_
  22 #define _PYRSCHED_H_
  23
  24 #include "VMGlobals.h"
  25 #include "SC_Export.h"
  26 #include <pthread.h>
  27
  28 extern pthread_mutex_t gLangMutex;
  29
  30 SC_DLLEXPORT_C void schedInit();
  31 SC_DLLEXPORT_C void schedCleanup();
  32
  33 SC_DLLEXPORT_C void schedRun();
  34 SC_DLLEXPORT_C void schedStop();
  35 SC_DLLEXPORT_C void schedClear();
  36
  37 double elapsedTime();
  38 int64 OSCTime();
  39
  40 int64 ElapsedTimeToOSC(double elapsed);
  41 double OSCToElapsedTime(int64 oscTime);
  42
  43 void syncOSCOffsetWithTimeOfDay();
  44 void doubleToTimespec(double secs, struct timespec *spec);
  45
  46
  47 bool addheap(VMGlobals *g, PyrObject *heap, double schedtime, PyrSlot *task);
  48 bool lookheap(PyrObject *heap, double *schedtime, PyrSlot *task) ;
  49 bool getheap(VMGlobals *g, PyrObject *heap, double *schedtime, PyrSlot *task) ;
  50 void offsetheap(VMGlobals *g, PyrObject *heap, double offset) ;
  51 void dumpheap(PyrObject *heap);
  52
  53 const double kSecondsToOSC  = 4294967296.; // pow(2,32)/1
  54 const double kMicrosToOSC = 4294.967296; // pow(2,32)/1e6
  55 const double kNanosToOSC  = 4.294967296; // pow(2,32)/1e9
  56 const double kOSCtoSecs = 2.328306436538696e-10;  // 1/pow(2,32)
  57 const double kOSCtoNanos  = 0.2328306436538696; // 1e9/pow(2,32)
  58
  59 #endif