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67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
/*
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* Copyright (C) 2020 TUBA Freiberg
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup tests
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* @{
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* @file
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* @brief Test sys/sched_round_robin
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* @author Karl Fessel <karl.fessel@ovgu.de>
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* @}
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include "thread.h"
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static kernel_pid_t main_pid;
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void * thread_wakeup_main(void *d)
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{
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(void) d;
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puts("wakup_thread yield");
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thread_yield();
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while (puts("wakeup main"), thread_wakeup(main_pid) == (int)STATUS_NOT_FOUND) {
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thread_yield();
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};
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return NULL;
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}
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void * thread_bad(void *d)
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{
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(void) d;
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puts("bad thread looping");
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for (;;) {
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/* I'm a bad thread I do nothing and I do that all the time */
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}
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}
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/* each thread gets a stack */
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static char stack[2][THREAD_STACKSIZE_DEFAULT];
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/* shared priority of the threads - lower than main waiting for it to sleep */
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static const uint8_t shared_prio = THREAD_PRIORITY_MAIN + 1;
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int main(void)
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{
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puts("starting threads");
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main_pid = thread_getpid();
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thread_create(stack[0], sizeof(stack[0]), shared_prio, THREAD_CREATE_STACKTEST,
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thread_wakeup_main, NULL, "TWakeup");
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thread_create(stack[1], sizeof(stack[1]), shared_prio, THREAD_CREATE_STACKTEST,
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thread_bad, NULL, "TBad");
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puts("main is going to sleep");
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thread_sleep();
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/* success: main got woken up again which means "TWakup" got cpu time
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* even though "TBad" was trying to hog the whole CPU */
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puts("[SUCCESS]");
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}
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