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, 5 insertions, 0 deletions

diff --git a/compiler-rt/lib/tsan/rtl/tsan_interface_java.h b/compiler-rt/lib/tsan/rtl/tsan_interface_java.h
index 9ac78e074bb..6a838851e43 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_interface_java.h
+++ b/compiler-rt/lib/tsan/rtl/tsan_interface_java.h
@@ -52,6 +52,11 @@ void __tsan_java_free(jptr ptr, jptr size) INTERFACE_ATTRIBUTE;
 // Can be aggregated for several objects (preferably).
 // The ranges must not overlap.
 void __tsan_java_move(jptr src, jptr dst, jptr size) INTERFACE_ATTRIBUTE;
+// This function must be called on the finalizer thread
+// before executing a batch of finalizers.
+// It ensures necessary synchronization between
+// java object creation and finalization.
+void __tsan_java_finalize() INTERFACE_ATTRIBUTE;
 
 // Mutex lock.
 // Addr is any unique address associated with the mutex.