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package vtk.test;
import java.lang.reflect.InvocationTargetException;
import java.util.concurrent.TimeUnit;
import vtk.vtkJavaGarbageCollector;
import vtk.vtkJavaTesting;
import vtk.vtkPoints;
import vtk.vtkUnstructuredGrid;
/**
* This test run concurrently thread that create Java view of VTK objects and
* the EDT that collect those objects as well as another thread.
*
* Based on the changes done to prevent concurrency during creation/deletion of
* VTK object this application shouldn't crash.
*
* @author sebastien jourdain - sebastien.jourdain@kitware.com
*/
public class ConcurrencyGC {
public static void main(String[] args) throws InterruptedException, InvocationTargetException {
try {
vtkJavaTesting.Initialize(args, true);
// Setup working runnable
Runnable workingJob = new Runnable() {
public void run() {
try {
vtkUnstructuredGrid grid = new vtkUnstructuredGrid();
grid.SetPoints(new vtkPoints());
vtkPoints p;
long timeout = System.currentTimeMillis() + 60000; // +1 minute
while (System.currentTimeMillis() < timeout) {
p = grid.GetPoints();
if (p == null) {
throw new RuntimeException("Invalid pointer null");
}
if (p.GetReferenceCount() != 2) {
throw new RuntimeException("Invalid reference count of " + p.GetReferenceCount());
}
}
} catch (Throwable e) {
e.printStackTrace();
vtkJavaTesting.Exit(vtkJavaTesting.FAILED);
}
}
};
// Start threads for concurrency (2xwork + 1xGC + 1xGCinEDT)
Thread worker1 = new Thread(workingJob);
Thread worker2 = new Thread(workingJob);
// Start working thread
worker1.start();
worker2.start();
// Setup GC
vtkJavaGarbageCollector gc = vtkJavaTesting.StartGCInEDT(10, TimeUnit.MILLISECONDS); // Start periodic GC in EDT
new Thread(gc.GetDeleteRunnable()).start(); // Start GC in tight loop
// If worker finished close everything
worker1.join();
worker2.join();
gc.Stop();
vtkJavaTesting.Exit(vtkJavaTesting.PASSED);
} catch (Throwable e) {
e.printStackTrace();
vtkJavaTesting.Exit(vtkJavaTesting.FAILED);
}
}
}
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