[ASan] Add support for lsan background leak checking thread.

Change-Id: I61dbebdecd0f608736e8a1649595868cc119a8e4

diff --git a/libsanitizer/asan/asan_rtl.cc b/libsanitizer/asan/asan_rtl.cc
index 8b28e6a..5bafb9a 100644 (file)
--- a/libsanitizer/asan/asan_rtl.cc
+++ b/libsanitizer/asan/asan_rtl.cc
@@ -594,11 +594,14 @@ static void AsanInitInternal() {
 
   if (CAN_SANITIZE_LEAKS) {
     __lsan::InitCommonLsan();
-    if (common_flags()->detect_leaks && common_flags()->leak_check_at_exit) {
-      if (flags()->halt_on_error)
-       Atexit(__lsan::DoLeakCheck);
-      else
-       Atexit(__lsan::DoRecoverableLeakCheckVoid);
+    if (common_flags()->detect_leaks) {
+      __lsan::MaybeStartBackgroudLeakCheckingThread();
+      if (common_flags()->leak_check_at_exit) {
+        if (flags()->halt_on_error)
+          Atexit(__lsan::DoLeakCheck);
+        else
+          Atexit(__lsan::DoRecoverableLeakCheckVoid);
+      }
     }
   }