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 #include "JackWinProcessSync.h"
  21 #include "JackError.h"
  22
  23 namespace Jack
  24 {
  25
  26 void JackWinProcessSync::Signal()
  27 {
  28     if (!SetEvent(fEvent)) {
  29         jack_error("JackWinProcessSync::Signal SetEvent err = %d", GetLastError());
  30     }
  31 }
  32
  33 void JackWinProcessSync::LockedSignal()
  34 {
  35     DWORD res = WaitForSingleObject(fMutex, INFINITE);
  36     if (res != WAIT_OBJECT_0) {
  37         jack_error("JackWinProcessSync::LockedSignal WaitForSingleObject err = %d", GetLastError());
  38     }
  39     if (!SetEvent(fEvent)) {
  40         jack_error("JackWinProcessSync::LockedSignal SetEvent err = %d", GetLastError());
  41     }
  42     if (!ReleaseMutex(fMutex)) {
  43         jack_error("JackWinProcessSync::LockedSignal ReleaseMutex err = %d", GetLastError());
  44     }
  45 }
  46
  47 void JackWinProcessSync::SignalAll()
  48 {
  49     Signal();
  50 }
  51
  52 void JackWinProcessSync::LockedSignalAll()
  53 {
  54     LockedSignal();
  55 }
  56
  57 /*
  58 void JackWinProcessSync::Wait()
  59 {
  60     if (!ReleaseMutex(fMutex)) {
  61         jack_error("JackWinProcessSync::Wait ReleaseMutex err = %d", GetLastError());
  62     }
  63         DWORD res = WaitForSingleObject(fEvent, INFINITE);
  64     if (res != WAIT_OBJECT_0) {
  65         jack_error("JackWinProcessSync::Wait WaitForSingleObject err = %d", GetLastError());
  66     }
  67 }
  68 */
  69
  70 void JackWinProcessSync::LockedWait()
  71 {
  72     // Does it make sense on Windows, use non-locked version for now...
  73         Wait();
  74 }
  75
  76 /*
  77 bool JackWinProcessSync::TimedWait(long usec)
  78 {
  79     if (!ReleaseMutex(fMutex)) {
  80         jack_error("JackWinProcessSync::TimedWait ReleaseMutex err = %d", GetLastError());
  81     }
  82
  83         DWORD res = WaitForSingleObject(fEvent, usec / 1000);
  84     if (res != WAIT_OBJECT_0) {
  85         jack_error("JackWinProcessSync::TimedWait WaitForSingleObject err = %d", GetLastError());
  86     }
  87
  88         return (res == WAIT_OBJECT_0);
  89 }
  90 */
  91 bool JackWinProcessSync::LockedTimedWait(long usec)
  92 {
  93     // Does it make sense on Windows, use non-locked version for now...
  94     return TimedWait(usec);
  95 }
  96
  97 void JackWinProcessSync::Wait()
  98 {
  99     // In case Wait is called in a "locked" context
 100     if (ReleaseMutex(fMutex)) {
 101         HANDLE handles[] = { fMutex, fEvent };
 102         DWORD res = WaitForMultipleObjects(2, handles, true, INFINITE);
 103         if (res != WAIT_OBJECT_0) {
 104             jack_error("JackWinProcessSync::Wait WaitForMultipleObjects err = %d", GetLastError());
 105         }
 106     // In case Wait is called in a "non-locked" context
 107     } else {
 108         jack_error("JackWinProcessSync::Wait ReleaseMutex err = %d", GetLastError());
 109         DWORD res = WaitForSingleObject(fEvent, INFINITE);
 110         if (res != WAIT_OBJECT_0) {
 111             jack_error("JackWinProcessSync::Wait WaitForSingleObject err = %d", GetLastError());
 112         }
 113     }
 114
 115     if (!ResetEvent(fEvent)) {
 116         jack_error("JackWinProcessSync::Wait ResetEvent err = %d", GetLastError());
 117     }
 118 }
 119
 120 bool JackWinProcessSync::TimedWait(long usec)
 121 {
 122     DWORD res = 0;
 123
 124     // In case TimedWait is called in a "locked" context
 125         if (ReleaseMutex(fMutex)) {
 126         HANDLE handles[] = { fMutex, fEvent };
 127         res = WaitForMultipleObjects(2, handles, true, usec / 1000);
 128         if ((res != WAIT_OBJECT_0) && (res != WAIT_TIMEOUT)) {
 129             jack_error("JackWinProcessSync::TimedWait WaitForMultipleObjects err = %d", GetLastError());
 130         }
 131     // In case TimedWait is called in a "non-locked" context
 132     } else {
 133         jack_error("JackWinProcessSync::TimedWait ReleaseMutex err = %d", GetLastError());
 134         res = WaitForSingleObject(fEvent, usec / 1000);
 135         if (res != WAIT_OBJECT_0) {
 136             jack_error("JackWinProcessSync::TimedWait WaitForSingleObject err = %d", GetLastError());
 137         }
 138     }
 139
 140         if (!ResetEvent(fEvent)) {
 141         jack_error("JackWinProcessSync::TimedWait ResetEvent err = %d", GetLastError());
 142     }
 143
 144         return (res == WAIT_OBJECT_0);
 145 }
 146
 147 /*
 148 // Code from APPLE CAGuard.cpp : does not seem to work as expected...
 149
 150 void JackWinProcessSync::Wait()
 151 {
 152     if (!ReleaseMutex(fMutex)) {
 153         jack_error("JackWinProcessSync::Wait ReleaseMutex err = %d", GetLastError());
 154     }
 155         DWORD res = WaitForSingleObject(fEvent, INFINITE);
 156     if (res != WAIT_OBJECT_0) {
 157         jack_error("JackWinProcessSync::Wait WaitForSingleObject err = %d", GetLastError());
 158     }
 159 }
 160
 161 // Variant that behaves differently depending of the mutex state
 162 void JackWinProcessSync::Wait()
 163 {
 164     if (ReleaseMutex(fMutex)) {
 165         HANDLE handles[] = { fMutex, fEvent };
 166         DWORD res = WaitForMultipleObjects(2, handles, true, INFINITE);
 167         if (res != WAIT_OBJECT_0) {
 168             jack_error("JackWinProcessSync::LockedWait WaitForMultipleObjects err = %d", GetLastError());
 169         }
 170     } else {
 171         jack_error("JackWinProcessSync::Wait ReleaseMutex err = %d", GetLastError());
 172         DWORD res = WaitForSingleObject(fEvent, INFINITE);
 173         if (res != WAIT_OBJECT_0) {
 174             jack_error("JackWinProcessSync::Wait WaitForSingleObject err = %d", GetLastError());
 175         }
 176     }
 177
 178     if (!ResetEvent(fEvent)) {
 179         jack_error("JackWinProcessSync::LockedWait ResetEvent err = %d", GetLastError());
 180     }
 181 }
 182
 183 void JackWinProcessSync::LockedWait()
 184 {
 185     if (!ReleaseMutex(fMutex)) {
 186         jack_error("JackWinProcessSync::LockedWait ReleaseMutex err = %d", GetLastError());
 187     }
 188
 189         HANDLE handles[] = { fMutex, fEvent };
 190         DWORD res = WaitForMultipleObjects(2, handles, true, INFINITE);
 191         if (res != WAIT_OBJECT_0) {
 192         jack_error("JackWinProcessSync::LockedWait WaitForMultipleObjects err = %d", GetLastError());
 193     }
 194
 195     if (!ResetEvent(fEvent)) {
 196         jack_error("JackWinProcessSync::LockedWait ResetEvent err = %d", GetLastError());
 197     }
 198 }
 199
 200 bool JackWinProcessSync::TimedWait(long usec)
 201 {
 202         if (!ReleaseMutex(fMutex)) {
 203         jack_error("JackWinProcessSync::TimedWait ReleaseMutex err = %d", GetLastError());
 204     }
 205
 206         DWORD res = WaitForSingleObject(fEvent, usec / 1000);
 207     if (res != WAIT_OBJECT_0) {
 208         jack_error("JackWinProcessSync::TimedWait WaitForSingleObject err = %d", GetLastError());
 209     }
 210
 211         return (res == WAIT_OBJECT_0);
 212 }
 213
 214 // Variant that behaves differently depending of the mutex state
 215 bool JackWinProcessSync::TimedWait(long usec)
 216 {
 217         if (ReleaseMutex(fMutex)) {
 218         HANDLE handles[] = { fMutex, fEvent };
 219         DWORD res = WaitForMultipleObjects(2, handles, true, usec / 1000);
 220         if ((res != WAIT_OBJECT_0) && (res != WAIT_TIMEOUT)) {
 221             jack_error("JackWinProcessSync::LockedTimedWait WaitForMultipleObjects err = %d", GetLastError());
 222         }
 223     } else {
 224         jack_error("JackWinProcessSync::TimedWait ReleaseMutex err = %d", GetLastError());
 225         DWORD res = WaitForSingleObject(fEvent, usec / 1000);
 226         if (res != WAIT_OBJECT_0) {
 227             jack_error("JackWinProcessSync::TimedWait WaitForSingleObject err = %d", GetLastError());
 228         }
 229     }
 230
 231         if (!ResetEvent(fEvent)) {
 232         jack_error("JackWinProcessSync::LockedTimedWait ResetEvent err = %d", GetLastError());
 233     }
 234
 235         return (res == WAIT_OBJECT_0);
 236 }
 237
 238 bool JackWinProcessSync::LockedTimedWait(long usec)
 239 {
 240    if (!ReleaseMutex(fMutex)) {
 241         jack_error("JackWinProcessSync::LockedTimedWait ReleaseMutex err = %d", GetLastError());
 242     }
 243
 244         HANDLE handles[] = { fMutex, fEvent };
 245         DWORD res = WaitForMultipleObjects(2, handles, true, usec / 1000);
 246         if ((res != WAIT_OBJECT_0) && (res != WAIT_TIMEOUT)) {
 247         jack_error("JackWinProcessSync::LockedTimedWait WaitForMultipleObjects err = %d", GetLastError());
 248     }
 249
 250     if (!ResetEvent(fEvent)) {
 251         jack_error("JackWinProcessSync::LockedTimedWait ResetEvent err = %d", GetLastError());
 252     }
 253
 254     return (res == WAIT_OBJECT_0);
 255 }
 256 */
 257
 258 } // end of namespace
 259
 260
 261