47 lines
846 B
C
47 lines
846 B
C
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/* Compiler options:
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#cc: additional_flags=-pthread
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#progos: linux
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To test sched_yield in the presencs of threads. Core from ex1.c. */
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#include <stddef.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <stdlib.h>
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static void *
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process (void *arg)
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{
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int i;
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for (i = 0; i < 10; i++)
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{
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if (sched_yield () != 0)
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abort ();
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}
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return NULL;
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}
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int
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main (void)
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{
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int retcode;
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pthread_t th_a, th_b;
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void *retval;
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retcode = pthread_create (&th_a, NULL, process, (void *) "a");
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if (retcode != 0)
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abort ();
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retcode = pthread_create (&th_b, NULL, process, (void *) "b");
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if (retcode != 0)
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abort ();
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retcode = pthread_join (th_a, &retval);
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if (retcode != 0)
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abort ();
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retcode = pthread_join (th_b, &retval);
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if (retcode != 0)
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abort ();
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printf ("pass\n");
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return 0;
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}
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