| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
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| 2 | #include "test.h" |
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| 3 | |
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| 4 | int Global; |
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| 5 | pthread_mutex_t mtx1; |
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| 6 | pthread_mutex_t mtx2; |
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| 7 | |
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| 8 | void *Thread1(void *x) { |
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| 9 | barrier_wait(barrier: &barrier); |
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| 10 | pthread_mutex_lock(mutex: &mtx1); |
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| 11 | pthread_mutex_lock(mutex: &mtx2); |
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| 12 | Global++; |
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| 13 | pthread_mutex_unlock(mutex: &mtx2); |
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| 14 | pthread_mutex_unlock(mutex: &mtx1); |
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| 15 | return NULL; |
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| 16 | } |
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| 17 | |
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| 18 | void *Thread2(void *x) { |
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| 19 | Global--; |
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| 20 | barrier_wait(barrier: &barrier); |
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| 21 | return NULL; |
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| 22 | } |
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| 23 | |
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| 24 | int main() { |
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| 25 | barrier_init(barrier: &barrier, count: 2); |
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| 26 | // CHECK: WARNING: ThreadSanitizer: data race |
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| 27 | // CHECK: Write of size 4 at {{.*}} by thread T1 |
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| 28 | // CHECK: (mutexes: write [[M1:M[0-9]+]], write [[M2:M[0-9]+]]): |
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| 29 | // CHECK: Previous write of size 4 at {{.*}} by thread T2: |
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| 30 | // CHECK: Mutex [[M1]] (0x{{.*}}) created at: |
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| 31 | // CHECK: #0 pthread_mutex_init |
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| 32 | // CHECK: #1 main {{.*}}mutexset3.cpp:[[@LINE+4]] |
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| 33 | // CHECK: Mutex [[M2]] (0x{{.*}}) created at: |
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| 34 | // CHECK: #0 pthread_mutex_init |
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| 35 | // CHECK: #1 main {{.*}}mutexset3.cpp:[[@LINE+2]] |
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| 36 | pthread_mutex_init(mutex: &mtx1, mutexattr: 0); |
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| 37 | pthread_mutex_init(mutex: &mtx2, mutexattr: 0); |
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| 38 | pthread_t t[2]; |
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| 39 | pthread_create(newthread: &t[0], NULL, start_routine: Thread1, NULL); |
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| 40 | pthread_create(newthread: &t[1], NULL, start_routine: Thread2, NULL); |
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| 41 | pthread_join(th: t[0], NULL); |
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| 42 | pthread_join(th: t[1], NULL); |
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| 43 | pthread_mutex_destroy(mutex: &mtx1); |
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| 44 | pthread_mutex_destroy(mutex: &mtx2); |
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| 45 | } |
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| 46 | |
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