windows/JackWinProcessSync.h

   1 /*
   2  Copyright (C) 2004-2008 Grame
   3
   4  This program is free software; you can redistribute it and/or modify
   5  it under the terms of the GNU Lesser General Public License as published by
   6  the Free Software Foundation; either version 2.1 of the License, or
   7  (at your option) any later version.
   8
   9  This program is distributed in the hope that it will be useful,
  10  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  GNU Lesser General Public License for more details.
  13
  14  You should have received a copy of the GNU Lesser General Public License
  15  along with this program; if not, write to the Free Software
  16  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 */
  19
  20 #ifndef __JackWinProcessSync__
  21 #define __JackWinProcessSync__
  22
  23 #include "JackWinMutex.h"
  24
  25 namespace Jack
  26 {
  27
  28 /*!
  29 \brief A synchronization primitive built using a condition variable.
  30 */
  31
  32 class JackWinProcessSync : public JackWinMutex
  33 {
  34
  35     private:
  36
  37         HANDLE fEvent;
  38
  39     public:
  40
  41         JackWinProcessSync(const char* name = NULL):JackWinMutex(name)
  42         {
  43             if (name) {
  44                 char buffer[MAX_PATH];
  45                 snprintf(buffer, sizeof(buffer), "%s_%s", "JackWinProcessSync", name);
  46                 fEvent = CreateEvent(NULL, TRUE, FALSE, buffer);  // Needs ResetEvent
  47                 //fEvent = CreateEvent(NULL, FALSE, FALSE, buffer);   // Auto-reset event
  48             } else {
  49                 fEvent = CreateEvent(NULL, TRUE, FALSE, NULL);   // Needs ResetEvent
  50                 //fEvent = CreateEvent(NULL, FALSE, FALSE, NULL);   // Auto-reset event
  51             }
  52
  53             ThrowIf((fEvent == 0), JackException("JackWinProcessSync: could not init the event"));
  54         }
  55         virtual ~JackWinProcessSync()
  56         {
  57             CloseHandle(fEvent);
  58         }
  59
  60         bool TimedWait(long usec);
  61         bool LockedTimedWait(long usec);
  62
  63         void Wait();
  64         void LockedWait();
  65
  66         void Signal();
  67         void LockedSignal();
  68
  69         void SignalAll();
  70         void LockedSignalAll();
  71 };
  72
  73 } // end of namespace
  74
  75 #endif
  76