mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
677d690e2b
Fixes #1708. Currently involuntary preemption causes the current thread not only to yield for a higher prioritized thread, but all other threads of its own priority class, too. This PR adds the function `thread_yield_higher()`, which will yield the current thread in favor of higher prioritized functions, but not for threads of its own priority class. Boards now need to implement `thread_yield_higher()` instead of `thread_yield()`, but `COREIF_NG` boards are not affected in any way. `thread_yield()` retains its old meaning: yield for every thread that has the same or a higher priority. This PR does not touch the occurrences of `thread_yield()` in the periph drivers, because the author of this PR did not look into the logic of the various driver implementations.
47 lines
1.0 KiB
C
47 lines
1.0 KiB
C
/*
|
|
* Copyright (C) 2014 Oliver Hahm <oliver.hahm@inria.fr>
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU Lesser
|
|
* General Public License v2.1. See the file LICENSE in the top level
|
|
* directory for more details.
|
|
*/
|
|
|
|
/**
|
|
* @ingroup tests
|
|
* @{
|
|
* @file
|
|
* @brief Test thread_yield()
|
|
* @author Oliver Hahm <oliver.hahm@inria.fr>
|
|
* @author René Kijewski <rene.kijewski@fu-berlin.de>
|
|
* @}
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "thread.h"
|
|
|
|
char snd_thread_stack[KERNEL_CONF_STACKSIZE_MAIN];
|
|
|
|
void *snd_thread(void *unused)
|
|
{
|
|
(void) unused;
|
|
puts("snd_thread running");
|
|
return NULL;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
puts("The output should be: yield 1, snd_thread running, yield 2, done");
|
|
puts("----------------------------------------------------------------");
|
|
|
|
thread_create(snd_thread_stack, sizeof(snd_thread_stack), PRIORITY_MAIN,
|
|
CREATE_WOUT_YIELD, snd_thread, NULL, "snd");
|
|
|
|
puts("yield 1");
|
|
thread_yield();
|
|
puts("yield 2");
|
|
thread_yield();
|
|
puts("done");
|
|
|
|
return 0;
|
|
}
|