/**
 * Compile with:
 * valac --pkg=glib-2.0 cpu.vala
 *
 * Get number of core processor.
 **/

private static string nb_cpu (string data) {
	string[] tokens;
	string cores = null;

	tokens = data.split (": ");
	if (tokens.length == 2) {
		cores = tokens[1];
	}

	return cores;
}


public static int main (string[] argv) {
	string cmd = "/sbin/sysctl hw.ncpu";
	string cores;
	string std_err = null;
	int status;

	try {
		GLib.Process.spawn_command_line_sync (cmd, out cores, out std_err,
											  out status);

		if (status == 0) {
			stdout.printf ("%s", nb_cpu (cores));
		}
	} catch (GLib.SpawnError e) {
		stderr.printf ("Error: %s\n", e.message);
	}

	return 0;
}