/** 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);
}
}
private static String threadStatusToJavaThreadState(int status) {
switch (status) {
case ThreadReference.THREAD_STATUS_MONITOR:
return Thread.State.BLOCKED.name();
case ThreadReference.THREAD_STATUS_NOT_STARTED:
return Thread.State.NEW.name();
case ThreadReference.THREAD_STATUS_RUNNING:
return Thread.State.RUNNABLE.name();
case ThreadReference.THREAD_STATUS_SLEEPING:
return Thread.State.TIMED_WAITING.name();
case ThreadReference.THREAD_STATUS_WAIT:
return Thread.State.WAITING.name();
case ThreadReference.THREAD_STATUS_ZOMBIE:
return Thread.State.TERMINATED.name();
case ThreadReference.THREAD_STATUS_UNKNOWN:
return "unknown";
default:
return "undefined";
}
}