36 lines
645 B
C
36 lines
645 B
C
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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/* Simple test program, has a race. Parent and child both modify x
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with no locking. */
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int x = 0;
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void* child_fn ( void* arg )
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{
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/* Unprotected relative to parent */
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x++;
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return NULL;
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}
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int main ( void )
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{
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const struct timespec delay = { 0, 100 * 1000 * 1000 };
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pthread_t child;
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if (pthread_create(&child, NULL, child_fn, NULL)) {
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perror("pthread_create");
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exit(1);
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}
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nanosleep(&delay, 0);
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/* Unprotected relative to child */
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x++;
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if (pthread_join(child, NULL)) {
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perror("pthread join");
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exit(1);
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}
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return 0;
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}
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