The status of the process while the lock is locked, as seen in the Process Browser.
A timeout period, in seconds.
The forms to execute.
with-lock executes body while holding the lock, and unlocks the lock when body exits. This is the recommended way of using locks. The value of body is returned normally. body is not executed if the lock could not be claimed, in which case,
LispWorks User Guide and Reference Manual - 13 Feb 2015