//
// Constructors.
//
public StTimer(bool notificationTimer) {
if (notificationTimer) {
tmrEvent = new StNotificationEvent();
} else {
tmrEvent = new StSynchronizationEvent();
}
state = INACTIVE;
cbparker = new CbParker(TimerCallback);
timer = new RawTimer(cbparker);
}
//
// Constructor: registers a wait with a Waitable synchronizer.
//
internal StRegisteredWait(StWaitable waitObject, WaitOrTimerCallback callback,
object cbState, int timeout, bool executeOnce) {
//
// Validate the arguments.
//
if (timeout == 0) {
throw new ArgumentOutOfRangeException("\"timeout\" can't be zero");
}
if (callback == null) {
throw new ArgumentOutOfRangeException("\"callback\" can't be null");
}
if ((waitObject is StReentrantFairLock) || (waitObject is StReentrantReadWriteLock)) {
throw new InvalidOperationException("can't register waits on reentrant locks");
}
if ((waitObject is StNotificationEvent) && !executeOnce) {
throw new InvalidOperationException("Notification event can't register waits"
+ " to execute more than once");
}
//
// Initialize the register wait fields
//
waitable = waitObject;
cbparker = new CbParker(UnparkCallback);
toTimer = new RawTimer(cbparker);
this.timeout = timeout;
this.executeOnce = executeOnce;
this.callback = callback;
this.cbState = (cbState != null) ? cbState : this;
//
// Execute the WaitAny prologue on the waitable.
//
int ignored = 0;
waitBlock = waitObject._WaitAnyPrologue(cbparker, StParkStatus.Success, ref hint,
ref ignored);
//
// Set the registered wait state to active and enable the
// unpark callback.
//
state = ACTIVE;
int ws = cbparker.EnableCallback(timeout, toTimer);
if (ws != StParkStatus.Pending) {
//
// The acquire operation was already accomplished. To prevent
// uncontrolled reentrancy, the unpark callback is executed inline.
//
UnparkCallback(ws);
}
}