Macro: SB-THREAD:WITH-RECURSIVE-LOCK

Acquire MUTEX for the dynamic scope of BODY.

If WAIT-P is true (the default), and the MUTEX is not immediately available or held by the current thread, sleep until it is available.

If TIMEOUT is given, it specifies a relative timeout, in seconds, on how long the system should try to acquire the lock in the contested case.

If the mutex isn’t acquired successfully due to either WAIT-P or TIMEOUT, the body is not executed, and WITH-RECURSIVE-LOCK returns NIL.

Otherwise body is executed with the mutex held by current thread, and WITH-RECURSIVE-LOCK returns the values of BODY.

Unlike WITH-MUTEX, which signals an error on attempt to re-acquire an already held mutex, WITH-RECURSIVE-LOCK allows recursive lock attempts to succeed.

Lambda list

((sb-thread:mutex &key sb-thread::wait-p sb-thread::timeout) &body sb-thread::body)