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Merge pull request #16794 from chrysn-pull-requests/clarify-msg-response

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core/msg doc: Clarify; elaborating on interaction with queue
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Kaspar Schleiser 2021-09-01 22:11:39 +03:00 committed by GitHub
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8
core/include/msg.h
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@ -311,7 +311,13 @@ int msg_try_receive(msg_t *m);
* @brief Send a message, block until reply received.
*
* This function sends a message to *target_pid* and then blocks until target
* has sent a reply which is then stored in *reply*.
* has sent a reply which is then stored in *reply*. The responding thread must
* use @ref msg_reply().
*
* Any incoming messages other than the reply are put into the queue (if one is
* configured), block the sender (if sent with @ref msg_send from a thread), or
* rejected (if sent with @ref msg_try_send or from an interrupt) -- just like
* if the thread were blocked on anything different than message reception.
*
* @pre @p target_pid is not the PID of the current thread.
*