dev/vala/live.gnome.org_tutorial/threading-sample.vala

56 lines
1.3 KiB
Vala

public class MyThread : Object {
public ThreadPriority priority { get; private set; }
public int x_times { get; private set; }
public MyThread (int times, ThreadPriority priority) {
this.priority = priority;
this.x_times = times;
}
public int run () {
// set the priority:
Thread.self<int> ().set_priority (ThreadPriority.URGENT);
for (int i = 0; i < this.x_times; i++) {
stdout.printf ("ping! %d/%d\n", i + 1, this.x_times);
Thread.usleep (10000);
}
// return & exit have the same effect
Thread.exit (42);
return 43;
}
}
public static int main (string[] args) {
// Check whether threads are supported:
if (Thread.supported () == false) {
stderr.printf ("Threads are not supported!\n");
return -1;
}
try {
// Start a thread:
MyThread my_thread = new MyThread (10, ThreadPriority.URGENT);
Thread<int> thread = new Thread<int>.try ("My fst. thread", my_thread.run);
// Count all running threads:
int threads = 0;
Thread.foreach (() => {
threads++;
});
// Output: ``Running threads: 0``
stdout.printf ("Running threads: %d\n", threads);
// Wait until thread finishes:
int result = thread.join ();
// Output: `Thread stopped! Return value: 42`
stdout.printf ("Thread stopped! Return value: %d\n", result);
} catch (Error e) {
stdout.printf ("Error: %s\n", e.message);
}
return 0;
}