public void testSynchronizedAccess() throws Exception {
final boolean[] lockHeld = {false};
final NativeLibrary nlib = NativeLibrary.getInstance("testlib", TestLib.class.getClassLoader());
final TestLib lib = (TestLib) Native.loadLibrary("testlib", TestLib.class);
final TestLib synchlib = (TestLib) Native.synchronizedLibrary(lib);
final TestLib.VoidCallback cb =
new TestLib.VoidCallback() {
public void callback() {
lockHeld[0] = Thread.holdsLock(nlib);
}
};
Thread t0 =
new Thread() {
public void run() {
lib.callVoidCallback(cb);
}
};
t0.start();
t0.join();
assertFalse(
"NativeLibrary lock should not be held during native call to normal library", lockHeld[0]);
Thread t1 =
new Thread() {
public void run() {
synchlib.callVoidCallback(cb);
}
};
t1.start();
t1.join();
assertTrue(
"NativeLibrary lock should be held during native call to synchronized library",
lockHeld[0]);
}
