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Diffstat (limited to 'lib/tsan/lit_tests/mutexset1.cc')
-rw-r--r-- | lib/tsan/lit_tests/mutexset1.cc | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/mutexset1.cc b/lib/tsan/lit_tests/mutexset1.cc new file mode 100644 index 000000000000..f32a770ab075 --- /dev/null +++ b/lib/tsan/lit_tests/mutexset1.cc @@ -0,0 +1,37 @@ +// 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 mtx; + +void *Thread1(void *x) { + sleep(1); + pthread_mutex_lock(&mtx); + Global++; + pthread_mutex_unlock(&mtx); + return NULL; +} + +void *Thread2(void *x) { + Global--; + 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: Mutex [[M1]] created at: + // CHECK: #0 pthread_mutex_init + // CHECK: #1 main {{.*}}/mutexset1.cc:[[@LINE+1]] + pthread_mutex_init(&mtx, 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(&mtx); +} |