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Diffstat (limited to 'lib/tsan/lit_tests/mutexset6.cc')
-rw-r--r-- | lib/tsan/lit_tests/mutexset6.cc | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/mutexset6.cc b/lib/tsan/lit_tests/mutexset6.cc new file mode 100644 index 000000000000..4b19a12e0434 --- /dev/null +++ b/lib/tsan/lit_tests/mutexset6.cc @@ -0,0 +1,53 @@ +// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s +#include <pthread.h> +#include <stdio.h> +#include <unistd.h> + +int Global; +pthread_mutex_t mtx1; +pthread_spinlock_t mtx2; +pthread_rwlock_t mtx3; + +void *Thread1(void *x) { + sleep(1); + pthread_mutex_lock(&mtx1); + Global++; + pthread_mutex_unlock(&mtx1); + return NULL; +} + +void *Thread2(void *x) { + pthread_mutex_lock(&mtx1); + pthread_mutex_unlock(&mtx1); + pthread_spin_lock(&mtx2); + pthread_rwlock_rdlock(&mtx3); + Global--; + pthread_spin_unlock(&mtx2); + pthread_rwlock_unlock(&mtx3); + return NULL; +} + +int main() { + // CHECK: WARNING: ThreadSanitizer: data race + // CHECK: Write of size 4 at {{.*}} by thread T1 + // CHECK: (mutexes: write [[M1:M[0-9]+]]): + // CHECK: Previous write of size 4 at {{.*}} by thread T2 + // CHECK: (mutexes: write [[M2:M[0-9]+]], read [[M3:M[0-9]+]]): + // CHECK: Mutex [[M1]] created at: + // CHECK: #1 main {{.*}}/mutexset6.cc:[[@LINE+5]] + // CHECK: Mutex [[M2]] created at: + // CHECK: #1 main {{.*}}/mutexset6.cc:[[@LINE+4]] + // CHECK: Mutex [[M3]] created at: + // CHECK: #1 main {{.*}}/mutexset6.cc:[[@LINE+3]] + pthread_mutex_init(&mtx1, 0); + pthread_spin_init(&mtx2, 0); + pthread_rwlock_init(&mtx3, 0); + pthread_t t[2]; + pthread_create(&t[0], NULL, Thread1, NULL); + pthread_create(&t[1], NULL, Thread2, NULL); + pthread_join(t[0], NULL); + pthread_join(t[1], NULL); + pthread_mutex_destroy(&mtx1); + pthread_spin_destroy(&mtx2); + pthread_rwlock_destroy(&mtx3); +} |