diff --git a/libs/utils/Threads.cpp b/libs/utils/Threads.cpp
index a25a81f..1d61457 100644
--- a/libs/utils/Threads.cpp
+++ b/libs/utils/Threads.cpp
@@ -871,6 +871,11 @@
     return mStatus;
 }
 
+bool Thread::isRunning() const {
+    Mutex::Autolock _l(mLock);
+    return mRunning;
+}
+
 #ifdef HAVE_ANDROID_OS
 pid_t Thread::getTid() const
 {