tsan: add __tsan_java_finalize interface function

It is required to prevent false positives between object ctor and finalizer,
as otherwise they look completely unsynchronized.

llvm-svn: 211829

1 files changed, 6 insertions, 0 deletions

diff --git a/compiler-rt/lib/tsan/rtl/tsan_interface_java.cc b/compiler-rt/lib/tsan/rtl/tsan_interface_java.cc
index ee610188292..e63b93f4139 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_interface_java.cc
+++ b/compiler-rt/lib/tsan/rtl/tsan_interface_java.cc
@@ -142,6 +142,12 @@ void __tsan_java_move(jptr src, jptr dst, jptr size) {
   }
 }
 
+void __tsan_java_finalize() {
+  SCOPED_JAVA_FUNC(__tsan_java_finalize);
+  DPrintf("#%d: java_mutex_finalize()\n", thr->tid);
+  AcquireGlobal(thr, 0);
+}
+
 void __tsan_java_mutex_lock(jptr addr) {
   SCOPED_JAVA_FUNC(__tsan_java_mutex_lock);
   DPrintf("#%d: java_mutex_lock(%p)\n", thr->tid, addr);