windows/JackWinProcessSync.cpp

   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
  21 #include "JackWinProcessSync.h"
  22 #include "JackError.h"
  23
  24 namespace Jack
  25 {
  26
  27 void JackWinProcessSync::Signal()
  28 {
  29     SetEvent(fEvent);
  30 }
  31
  32 void JackWinProcessSync::LockedSignal()
  33 {
  34     WaitForSingleObject(fMutex, INFINITE);
  35     SetEvent(fEvent);
  36     ReleaseMutex(fMutex);
  37 }
  38
  39 void JackWinProcessSync::SignalAll()
  40 {
  41     SetEvent(fEvent);
  42 }
  43
  44 void JackWinProcessSync::LockedSignalAll()
  45 {
  46     WaitForSingleObject(fMutex, INFINITE);
  47     SetEvent(fEvent);
  48     ReleaseMutex(fMutex);
  49 }
  50
  51 void JackWinProcessSync::Wait()
  52 {
  53     ReleaseMutex(fMutex);
  54         WaitForSingleObject(fEvent, INFINITE);
  55 }
  56
  57 void JackWinProcessSync::LockedWait()
  58 {
  59     /* Does it make sense on Windows, use non-locked version for now... */
  60         Wait();
  61 }
  62
  63 bool JackWinProcessSync::TimedWait(long usec)
  64 {
  65     ReleaseMutex(fMutex);
  66         DWORD res = WaitForSingleObject(fEvent, usec / 1000);
  67         return (res == WAIT_OBJECT_0);
  68 }
  69
  70 bool JackWinProcessSync::LockedTimedWait(long usec)
  71 {
  72     /* Does it make sense on Windows, use non-locked version for now...*/
  73     return TimedWait(usec);
  74 }
  75
  76 /*
  77 Code from APPLE CAGuard.cpp : does not seem to work as expected...
  78
  79 void JackWinProcessSync::Wait()
  80 {
  81     ReleaseMutex(fMutex);
  82         HANDLE handles[] = { fMutex, fEvent };
  83         DWORD res = WaitForMultipleObjects(2, handles, true, INFINITE);
  84         if ((res != WAIT_OBJECT_0) && (res != WAIT_TIMEOUT))
  85         jack_error("Wait error err = %d", GetLastError());
  86     ResetEvent(fEvent);
  87 }
  88
  89 void JackWinProcessSync::LockedWait()
  90 {
  91     WaitForSingleObject(fMutex, INFINITE);
  92     ReleaseMutex(fMutex);
  93         HANDLE handles[] = { fMutex, fEvent };
  94         DWORD res = WaitForMultipleObjects(2, handles, true, INFINITE);
  95         if ((res != WAIT_OBJECT_0) && (res != WAIT_TIMEOUT))
  96         jack_error("LockedWait error err = %d", GetLastError());
  97     ResetEvent(fEvent);
  98 }
  99
 100 bool JackWinProcessSync::TimedWait(long usec)
 101 {
 102         ReleaseMutex(fMutex);
 103         HANDLE handles[] = { fMutex, fEvent };
 104         DWORD res = WaitForMultipleObjects(2, handles, true, usec / 1000);
 105         if ((res != WAIT_OBJECT_0) && (res != WAIT_TIMEOUT))
 106         jack_error("Wait error err = %d", GetLastError());
 107     ResetEvent(fEvent);
 108 }
 109
 110 bool JackWinProcessSync::LockedTimedWait(long usec)
 111 {
 112     WaitForSingleObject(fMutex, INFINITE);
 113     ReleaseMutex(fMutex);
 114     HANDLE handles[] = { fMutex, fEvent };
 115         DWORD res = WaitForMultipleObjects(2, handles, true, usec / 1000);
 116     if ((res != WAIT_OBJECT_0) && (res != WAIT_TIMEOUT))
 117         jack_error("LockedTimedWait error err = %d", GetLastError());
 118     ResetEvent(fEvent);
 119         return (res == WAIT_OBJECT_0);
 120 }
 121 */
 122
 123 } // end of namespace
 124
 125
 126