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(librep.info)Mutexes

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Mutual Exclusion Devices
------------------------

   "Mutexes" are lisp objects used to coordinate access to data shared
across multiple threads (where interleaved access would be bad). These
functions are exported by the `rep.threads.mutex' module (Note:
Modules).

 - Function: make-mutex
     Create and return a mutex object. No thread will own the new mutex.

 - Function: mutexp arg
     Return true if ARG is a mutex object.

 - Function: obtain-mutex mutex
     Obtain the mutex MUTEX for the current thread. Will suspend the
     current thread until the mutex is exclusively available.

 - Function: maybe-obtain-mutex mutex
     Attempt to obtain mutex MUTEX for the current thread without
     blocking. Returns true if able to obtain the mutex, false
     otherwise.

 - Function: release-mutex mutex
     Release the mutex object MUTEX (which must have previously been
     obtained by the current thread). Returns true if the mutex has no
     new owner.