without-lock-held

Purpose
Temporarily release a lock or a recursive lock, execute forms and then reacquire the lock.

Package   :portable-threads

Module   :portable-threads

Arguments and values

Returns
The values returned by evaluating the last form.

Errors
A thread attempts to release a lock that it does not hold.

See also
    make-condition-variable
    make-lock
    make-recursive-lock
    thread-holds-lock-p
    thread-whostate
    with-lock-held

Example
Acquire and temporarily release a lock controlling access to several critical sections of code:

  (with-lock-held (lock :whostate "Waiting for Critical Lock")
    (critical-section-1)
    (without-lock-held (lock :whostate "Doing non-critical stuff")
      (non-critical-section))
    (critical-section-2))

Note
The whostate value is ignored by SBCL.

without-lock-held