diff options
Diffstat (limited to 'test/tsan/java_volatile.cc')
-rw-r--r-- | test/tsan/java_volatile.cc | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/test/tsan/java_volatile.cc b/test/tsan/java_volatile.cc new file mode 100644 index 000000000000..885b4f241712 --- /dev/null +++ b/test/tsan/java_volatile.cc @@ -0,0 +1,42 @@ +// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s +#include "java.h" + +jptr varaddr; +jptr lockaddr; + +void *Thread(void *p) { + while (__atomic_load_n((int*)lockaddr, __ATOMIC_RELAXED) == 0) + usleep(1000); // spin-wait + __tsan_java_acquire(lockaddr); + *(int*)varaddr = 42; + return 0; +} + +int main() { + barrier_init(&barrier, 2); + int const kHeapSize = 1024 * 1024; + jptr jheap = (jptr)malloc(kHeapSize + 8) + 8; + __tsan_java_init(jheap, kHeapSize); + const int kBlockSize = 16; + __tsan_java_alloc(jheap, kBlockSize); + varaddr = jheap; + lockaddr = jheap + 8; + pthread_t th; + pthread_create(&th, 0, Thread, 0); + *(int*)varaddr = 43; + __tsan_java_release(lockaddr); + __atomic_store_n((int*)lockaddr, 1, __ATOMIC_RELAXED); + pthread_join(th, 0); + *(int*)lockaddr = 0; + pthread_create(&th, 0, Thread, 0); + *(int*)varaddr = 43; + __tsan_java_release_store(lockaddr); + __atomic_store_n((int*)lockaddr, 1, __ATOMIC_RELAXED); + pthread_join(th, 0); + __tsan_java_free(jheap, kBlockSize); + fprintf(stderr, "DONE\n"); + return __tsan_java_fini(); +} + +// CHECK-NOT: WARNING: ThreadSanitizer: data race +// CHECK: DONE |