The Ecere SDK - sdk/blob - ecere/src/sys/Condition.ec

   1 #if defined(BUILDING_ECERE_COM)
   2 import "Semaphore"
   3 #else
   4 import "ecere"
   5 #endif
   6
   7 class Condition : struct
   8 {
   9    char * name;
  10    Mutex lock { };
  11    int waiting;
  12    int signals;
  13    Semaphore waitSem { };
  14    Semaphore waitDone { };
  15
  16    void Signal()
  17    {
  18       lock.Wait();
  19       if (waiting > signals)
  20       {
  21          signals++;
  22          waitSem.Release();
  23          lock.Release();
  24          waitDone.Wait();
  25       }
  26       else
  27          lock.Release();
  28    }
  29
  30    void Wait(Mutex mutex)
  31    {
  32       lock.Wait();
  33       waiting++;
  34       lock.Release();
  35
  36       mutex.Release();
  37
  38       waitSem.Wait();
  39
  40       lock.Wait();
  41       if(signals > 0)
  42       {
  43          waitDone.Release();
  44          signals--;
  45       }
  46       waiting--;
  47       lock.Release();
  48
  49       mutex.Wait();
  50    }
  51 }