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

   1 #if defined(BUILDING_ECERE_COM)
   2 //#if !defined(__EMSCRIPTEN__)
   3 import "Semaphore"
   4 //#else
   5 //import "ecere"
   6 //#endif
   7 #else
   8 import "ecere"
   9 #endif
  10
  11 namespace sys;
  12
  13 #if !defined(__EMSCRIPTEN__)
  14
  15 public class Condition : struct
  16 {
  17    const char * name;
  18    Mutex lock { };
  19    int waiting;
  20    int signals;
  21    Semaphore waitSem { };
  22    Semaphore waitDone { };
  23
  24 public:
  25    property const char * name
  26    {
  27       set { name = value; }
  28       get { return name; }
  29    }
  30
  31    void Signal()
  32    {
  33       lock.Wait();
  34       if (waiting > signals)
  35       {
  36          signals++;
  37          waitSem.Release();
  38          lock.Release();
  39          waitDone.Wait();
  40       }
  41       else
  42          lock.Release();
  43    }
  44
  45    void Wait(Mutex mutex)
  46    {
  47       lock.Wait();
  48       waiting++;
  49       lock.Release();
  50
  51       mutex.Release();
  52
  53       waitSem.Wait();
  54
  55       lock.Wait();
  56       if(signals > 0)
  57       {
  58          waitDone.Release();
  59          signals--;
  60       }
  61       waiting--;
  62       lock.Release();
  63
  64       mutex.Wait();
  65    }
  66 }
  67
  68 #endif // !defined(__EMSCRIPTEN__)