1 files changed, 180 insertions, 0 deletions
diff --git a/common/JackProcessSync.h b/common/JackProcessSync.h
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+++ b/common/JackProcessSync.h
@@ -0,0 +1,180 @@
+/*
+Copyright (C) 2004-2006 Grame  
+
+This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __JackProcessSync__
+#define __JackProcessSync__
+
+#include "JackSyncInterface.h"
+#include "JackSynchro.h"
+#include <pthread.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+namespace Jack
+{
+
+/*!
+\brief  A synchronization primitive built using a condition variable.
+*/
+
+class JackProcessSync : public JackSyncInterface
+{
+
+    private:
+
+        pthread_mutex_t fLock;  // Mutex
+        pthread_cond_t fCond;   // Condition variable
+
+    public:
+
+        JackProcessSync(): JackSyncInterface()
+        {
+            pthread_mutex_init(&fLock, NULL);
+            pthread_cond_init(&fCond, NULL);
+        }
+        virtual ~JackProcessSync()
+        {
+            pthread_mutex_destroy(&fLock);
+            pthread_cond_destroy(&fCond);
+        }
+
+        bool Allocate(const char* name)
+        {
+            return true;
+        }
+
+        bool Connect(const char* name)
+        {
+            return true;
+        }
+
+        void Destroy()
+        {}
+
+        bool TimedWait(long usec)
+        {
+            struct timeval T0, T1;
+            timespec time;
+            struct timeval now;
+            int res;
+
+            pthread_mutex_lock(&fLock);
+            JackLog("JackProcessSync::Wait time out = %ld\n", usec);
+            gettimeofday(&T0, 0);
+
+            static const UInt64	kNanosPerSec = 1000000000ULL;
+            static const UInt64	kNanosPerUsec = 1000ULL;
+            gettimeofday(&now, 0);
+            UInt64 nextDateNanos = now.tv_sec * kNanosPerSec + (now.tv_usec + usec) * kNanosPerUsec;
+            time.tv_sec = nextDateNanos / kNanosPerSec;
+            time.tv_nsec = nextDateNanos % kNanosPerSec;
+            res = pthread_cond_timedwait(&fCond, &fLock, &time);
+            if (res != 0)
+                jack_error("pthread_cond_timedwait error usec = %ld err = %s", usec, strerror(res));
+
+            gettimeofday(&T1, 0);
+            pthread_mutex_unlock(&fLock);
+            JackLog("JackProcessSync::Wait finished delta = %5.1lf\n",
+                    (1e6 * T1.tv_sec - 1e6 * T0.tv_sec + T1.tv_usec - T0.tv_usec));
+            return (res == 0);
+        }
+
+        void Wait()
+        {
+            int res;
+            pthread_mutex_lock(&fLock);
+            JackLog("JackProcessSync::Wait...\n");
+            if ((res = pthread_cond_wait(&fCond, &fLock)) != 0)
+                jack_error("pthread_cond_wait error err = %s", strerror(errno));
+            pthread_mutex_unlock(&fLock);
+            JackLog("JackProcessSync::Wait finished\n");
+        }
+
+        void SignalAll()
+        {
+            //pthread_mutex_lock(&fLock);
+            pthread_cond_broadcast(&fCond);
+            //pthread_mutex_unlock(&fLock);
+        }
+
+};
+
+/*!
+\brief  A synchronization primitive built using an inter-process synchronization object.
+*/
+
+class JackInterProcessSync : public JackSyncInterface
+{
+
+    private:
+
+        JackSynchro* fSynchro;
+
+    public:
+
+        JackInterProcessSync(JackSynchro* synchro): fSynchro(synchro)
+        {}
+        virtual ~JackInterProcessSync()
+        {
+            delete fSynchro;
+        }
+
+        bool Allocate(const char* name)
+        {
+            return fSynchro->Allocate(name, 0);
+        }
+
+        void Destroy()
+        {
+            fSynchro->Destroy();
+        }
+
+        bool Connect(const char* name)
+        {
+            return fSynchro->Connect(name);
+        }
+
+        bool TimedWait(long usec)
+        {
+            struct timeval T0, T1;
+            JackLog("JackInterProcessSync::Wait...\n");
+            gettimeofday(&T0, 0);
+            bool res = fSynchro->TimedWait(usec);
+            gettimeofday(&T1, 0);
+            JackLog("JackInterProcessSync::Wait finished delta = %5.1lf\n",
+                    (1e6 * T1.tv_sec - 1e6 * T0.tv_sec + T1.tv_usec - T0.tv_usec));
+            return res;
+        }
+
+        void Wait()
+        {
+            fSynchro->Wait();
+        }
+
+        void SignalAll()
+        {
+            fSynchro->SignalAll();
+        }
+};
+
+
+} // end of namespace
+
+#endif
+