The node ID of the task to be found.
The process ID of the task to be found.
The channel ID of the task to be found.
A pointer to a cached IP_Task whose nid, pid and chid exactly match the requested values, or NULL if there is no match.
This function looks up a task in the current process's task cache by matching the node, process ID and channel ID of the target task. Channel ID is only relevant in QNX 6.