[0.95.6] OSS driver fix for CPU load

git-svn-id: svn+ssh://jackaudio.org/trunk/jack@659 0c269be4-1314-0410-8aa9-9f06e86f4224

configure.in

@@ -15,7 +15,7 @@ dnl                 changes are made
 dnl ---
 JACK_MAJOR_VERSION=0
 JACK_MINOR_VERSION=95
-JACK_MICRO_VERSION=5
+JACK_MICRO_VERSION=6
 
 dnl ---
 dnl HOWTO: updating the jack protocol version

drivers/dummy/dummy_driver.c

@@ -329,7 +329,7 @@ driver_initialize (jack_client_t *client, const JSList * params)
 	unsigned int capture_ports = 2;
 	unsigned int playback_ports = 2;
 	int wait_time_set = 0;
-	unsigned long wait_time;
+	unsigned long wait_time = 0;
 	const JSList * node;
 	const jack_driver_param_t * param;
 

drivers/oss/oss_driver.c

@@ -799,6 +799,15 @@ static int oss_driver_bufsize (oss_driver_t *driver, jack_nframes_t nframes)
 
 /* internal driver thread */
 
+static inline void start_process_cycle (oss_driver_t *driver)
+{
+	driver->last_wait_ust = jack_get_microseconds();
+	driver->engine->transport_cycle_start(driver->engine, 
+					      driver->last_wait_ust);
+	/* what is the actual delay value? (not zero) */
+	driver->engine->run_cycle(driver->engine,
+				  driver->period_size, 0);
+}
 
 #ifdef USE_BARRIER
 static inline void synchronize (oss_driver_t *driver)
@@ -808,16 +817,12 @@ static inline void synchronize (oss_driver_t *driver)
 		if (pthread_barrier_wait(&driver->barrier) ==
 			PTHREAD_BARRIER_SERIAL_THREAD)
 		{
-			driver->last_wait_ust = jack_get_microseconds();
-			driver->engine->run_cycle(driver->engine, 
-				driver->period_size, 0);
+			start_process_cycle(driver);
 		}
 	}
 	else
 	{
-		driver->last_wait_ust = jack_get_microseconds();
-		driver->engine->run_cycle(driver->engine,
-			driver->period_size, 0);
+		start_process_cycle(driver);
 	}
 }
 #endif
@@ -955,9 +960,7 @@ static void *io_thread (void *param)
 			pthread_mutex_unlock(&driver->mutex_in);
 		}
 
-		driver->last_wait_ust = jack_get_microseconds();
-		driver->engine->run_cycle(driver->engine, 
-			driver->period_size, 0);
+		start_process_cycle(driver);
 	}
 
 	free(localbuf);

drivers/portaudio/portaudio_driver.c

@@ -315,7 +315,7 @@ portaudio_driver_new (char *name,
 		 DitherAlgorithm dither)
 {
 	portaudio_driver_t *driver;
-        PaError err;
+        PaError	 err = paNoError;
         const    PaDeviceInfo *pdi;
         int      numDevices;
         int      i,j;