Attachment 169973 Details for Bug 209233 – test case

test case

file_209233.txt (text/plain), 1.30 KB, created by Lawrence Esswood on 2016-05-04 17:57:50 UTC

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Creator: Lawrence Esswood

Created: 2016-05-04 17:57:50 UTC

Size: 1.30 KB

patch

obsolete

>#include <stdio.h>
>#include <pthread.h>
>#include <pthread_np.h>
>#include <unistd.h>
>#include <stdlib.h>
>
>volatile int flag = 0;
>int n = 100;
>
>void busyLoop() {
>        volatile int ctr;
>        for(int i = 0; i < 1000000; i++) ctr++;
>}
>
>void* check_flags(void* x) {
>
>        pthread_suspend_all_np();
>        if(flag != 0) {
>                printf("Should have got mutual exclusion\n");
>                exit(1);
>        }
>        flag = 1;
>        busyLoop();
>        flag = 0;
>        pthread_resume_all_np();
>        return 0;
>}
>
>int test() {
>        pthread_t threads[n];
>        for(int i = 0; i < n; i++) {
>                int ret = pthread_create(&threads[i], NULL, check_flags, NULL);
>                if(ret != 0) {
>                        printf("Creation fail %d\n", ret);
>                        return ret;
>                }
>        }
>        for(int i = 0; i < n; i++) {
>                int ret = pthread_join(threads[i], NULL);
>                if(ret != 0) {
>                        printf("Join fail %d\n", ret);
>                        return ret;
>                }
>        }
>
>        return 0;
>}
>
>int main(void) {
>        for(int i = 0; i < 100; i++) {
>                int ret = test();
>                if(ret != 0) return ret;
>        }
>        return 0;
>}

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Attachments on bug 209233: 169926 | 169969 | 169971 | 169973