This function causes the current task to be notified whenever the events in flags occur within qserve. This function will create a pulse, stored in task->qpulse, if necessary. When the event occurs, task->qpulse will be triggered, and will subsequently be received through IP_Receive as an IP_PULSE event type.
The possible values for flags are:
IP_NOTIFY_MSG notifies the caller when the next message is available. This event causes at most one pulse trigger.
IP_NOTIFY_EVERY_MSG notifies the caller when every message is available. This event will cause on pulse trigger for each message that arrives in the queue.
IP_NOTIFY_SPACE notifies the caller when the queue transitions from full to non-full This event causes at most one pulse trigger.
IP_NOTIFY_ANY_SPACE notifies the caller whenever the queue transitions from full to non-full.
IP_NOTIFY_HALF_SPACE notifies the caller when the queue transitions from half-full to less than half-full. This event causes at most one pulse trigger.
IP_NOTIFY_ANY_HALF_SPACE notifies the caller whenever the queue transitions from half-full to less than half-full.
The programmer should not make this call with a task structure referring to the current process, as it is done automatically by the API.