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core: msg_receive should yield

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If a thread sends blocking, but the target thread is not currently in
receive mode, the sender gets queued. If it has a higher priority it
should run again as soon as the target goes into receiving mode.
This commit is contained in:
Oleg Hahm 2014-10-17 23:32:40 +02:00
parent fc4cf69376
commit 4fd3d62f2a
1 changed files with 5 additions and 0 deletions
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5
core/msg.c
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@ -310,12 +310,17 @@ static int _msg_receive(msg_t *m, int block)
*m = *sender_msg;
/* remove sender from queue */
uint16_t sender_prio = PRIORITY_IDLE;
if (sender->status != STATUS_REPLY_BLOCKED) {
sender->wait_data = NULL;
sched_set_status(sender, STATUS_PENDING);
sender_prio = sender->priority;
}
eINT();
if (sender_prio < PRIORITY_IDLE) {
sched_switch(sender_prio);
}
return 1;
}