| 1 | // RUN: %clang_tsan %s -o %t |
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| 2 | // RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer' |
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| 3 | |
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| 4 | #include <os/lock.h> |
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| 5 | #include <pthread.h> |
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| 6 | #include <stdio.h> |
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| 7 | |
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| 8 | long global_variable; |
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| 9 | os_unfair_lock lock = OS_UNFAIR_LOCK_INIT; |
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| 10 | |
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| 11 | void *Thread(void *a) { |
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| 12 | os_unfair_lock_lock(&lock); |
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| 13 | global_variable++; |
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| 14 | os_unfair_lock_unlock(&lock); |
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| 15 | return NULL; |
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| 16 | } |
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| 17 | |
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| 18 | int main() { |
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| 19 | pthread_t t1, t2; |
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| 20 | global_variable = 0; |
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| 21 | pthread_create(newthread: &t1, NULL, start_routine: Thread, NULL); |
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| 22 | pthread_create(newthread: &t2, NULL, start_routine: Thread, NULL); |
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| 23 | pthread_join(th: t1, NULL); |
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| 24 | pthread_join(th: t2, NULL); |
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| 25 | fprintf(stderr, format: "global_variable = %ld\n" , global_variable); |
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| 26 | } |
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| 27 | |
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| 28 | // CHECK: global_variable = 2 |
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| 29 | |
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