process-message-interrupt-function

Arguments: process

Returns or sets with setf the message-interrupt-function of process. This is specified to make-process as the value of the message-interrupt-function argument. This attribute of a process is important for Windows only. In the windows environment only, it's very very bad to ignore messages for long periods of time. Some global events involve broadcasting messages to a class of threads, and some of these have to be responded to or things lock up.

To deal with this, each windows process has this attribute. When a process is in a non-ready state (wait function, arrest reasons, no run reasons), and a windows message appears on its message queue, then the process-message-interrupt-function will be run as if by process-interrupt call, if the process-message-interrupt-function is non-nil.

See multiprocessing.htm for general information on multiprocessing.

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Created 2019.8.20.