/** Ensure that the flasher instance limiting machinery is working as expected. */
public void testUnlimitedFlashLimit() throws Exception {
final DeviceFlashPreparer dfp = mDeviceFlashPreparer;
try {
Thread waiter =
new Thread() {
@Override
public void run() {
dfp.takeFlashingPermit();
dfp.returnFlashingPermit();
}
};
dfp.setConcurrentFlashSettings(null, null, true);
// take a permit; the next attempt to take the permit should proceed without blocking
dfp.takeFlashingPermit();
assertNull("Flash lock is non-null", dfp.getConcurrentFlashLock());
waiter.start();
RunUtil.getDefault().sleep(100); // Thread start should take <100ms
Thread.State waiterState = waiter.getState();
assertTrue(
"Invalid state: waiter thread hasn't started",
waiter.isAlive() || Thread.State.TERMINATED.equals(waiterState));
assertNull("Flash lock is non-null", dfp.getConcurrentFlashLock());
dfp.returnFlashingPermit();
RunUtil.getDefault().sleep(100); // Thread start should take <100ms
assertNull("Flash lock is non-null", dfp.getConcurrentFlashLock());
waiter.join(1000);
assertFalse("waiter thread has not returned", waiter.isAlive());
} finally {
// Attempt to reset concurrent flash settings to defaults
dfp.setConcurrentFlashSettings(null, null, true);
}
}
/** Ensure that the flasher instance limiting machinery is working as expected. */
public void testFlashLimit() throws Exception {
final DeviceFlashPreparer dfp = mDeviceFlashPreparer;
try {
Thread waiter =
new Thread() {
@Override
public void run() {
dfp.takeFlashingPermit();
dfp.returnFlashingPermit();
}
};
dfp.setConcurrentFlashSettings(1, new Semaphore(1), true);
// take the permit; the next attempt to take the permit should block
dfp.takeFlashingPermit();
assertFalse(dfp.getConcurrentFlashLock().hasQueuedThreads());
waiter.start();
RunUtil.getDefault().sleep(100); // Thread start should take <100ms
assertTrue("Invalid state: waiter thread is not alive", waiter.isAlive());
assertTrue("No queued threads", dfp.getConcurrentFlashLock().hasQueuedThreads());
dfp.returnFlashingPermit();
RunUtil.getDefault().sleep(100); // Thread start should take <100ms
assertFalse("Unexpected queued threads", dfp.getConcurrentFlashLock().hasQueuedThreads());
waiter.join(1000);
assertFalse("waiter thread has not returned", waiter.isAlive());
} finally {
// Attempt to reset concurrent flash settings to defaults
dfp.setConcurrentFlashSettings(null, null, true);
}
}
