vendor/compiler-rt/compiler-rt-r172839

1 files changed, 32 insertions, 0 deletions

diff --git a/lib/tsan/lit_tests/java_alloc.cc b/lib/tsan/lit_tests/java_alloc.cc
new file mode 100644
index 0000000000000..4dbce70c31eb5
--- /dev/null
+++ b/lib/tsan/lit_tests/java_alloc.cc
@@ -0,0 +1,32 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include "java.h"
+
+int const kHeapSize = 1024 * 1024;
+
+void stress(jptr addr) {
+  for (jptr sz = 8; sz <= 32; sz <<= 1) {
+    for (jptr i = 0; i < kHeapSize / 4 / sz; i++) {
+      __tsan_java_alloc(addr + i * sz, sz);
+    }
+    __tsan_java_move(addr, addr + kHeapSize / 2, kHeapSize / 4);
+    __tsan_java_free(addr + kHeapSize / 2, kHeapSize / 4);
+  }
+}
+
+void *Thread(void *p) {
+  stress((jptr)p);
+  return 0;
+}
+
+int main() {
+  jptr jheap = (jptr)malloc(kHeapSize);
+  __tsan_java_init(jheap, kHeapSize);
+  pthread_t th;
+  pthread_create(&th, 0, Thread, (void*)(jheap + kHeapSize / 4));
+  stress(jheap);
+  pthread_join(th, 0);
+  printf("OK\n");
+  return __tsan_java_fini();
+}
+
+// CHECK-NOT: WARNING: ThreadSanitizer: data race