4 Causes a job to be queued when a socket becomes readable.
27 The function has the following parameters:
30 A pointer to a :ref:`PRThreadPool` structure previously created by a
31 call to :ref:`PR_CreateThreadPool`.
33 A pointer to a :ref:`PRJobIoDesc` structure.
35 The function to be executed when the job is executed.
37 A pointer to an argument passed to ``fn``.
39 If ``PR_TRUE``, the job is joinable. If ``PR_FALSE``, the job is not
40 joinable. See :ref:`PR_JoinJob`.
46 Pointer to a :ref:`PRJob` structure or ``NULL`` on error.