diff options
Diffstat (limited to 'test/tsan/mmap_stress.cc')
-rw-r--r-- | test/tsan/mmap_stress.cc | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/test/tsan/mmap_stress.cc b/test/tsan/mmap_stress.cc new file mode 100644 index 000000000000..5e3904adf90b --- /dev/null +++ b/test/tsan/mmap_stress.cc @@ -0,0 +1,47 @@ +// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s +#include "test.h" +#include <errno.h> +#include <sys/mman.h> + +void *SubWorker(void *arg) { + (void)arg; + const int kMmapSize = 65536; + for (int i = 0; i < 500; i++) { + int *ptr = (int*)mmap(0, kMmapSize, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANON, -1, 0); + *ptr = 42; + munmap(ptr, kMmapSize); + } + return 0; +} + +void *Worker1(void *arg) { + (void)arg; + pthread_t th[4]; + for (int i = 0; i < 4; i++) + pthread_create(&th[i], 0, SubWorker, 0); + for (int i = 0; i < 4; i++) + pthread_join(th[i], 0); + return 0; +} + +void *Worker(void *arg) { + (void)arg; + pthread_t th[4]; + for (int i = 0; i < 4; i++) + pthread_create(&th[i], 0, Worker1, 0); + for (int i = 0; i < 4; i++) + pthread_join(th[i], 0); + return 0; +} + +int main() { + pthread_t th[4]; + for (int i = 0; i < 4; i++) + pthread_create(&th[i], 0, Worker, 0); + for (int i = 0; i < 4; i++) + pthread_join(th[i], 0); + fprintf(stderr, "DONE\n"); +} + +// CHECK: DONE |