diff --git a/trunk/src/protocol/srs_service_st.cpp b/trunk/src/protocol/srs_service_st.cpp
index f902d5056..ff40b8a03 100644
--- a/trunk/src/protocol/srs_service_st.cpp
+++ b/trunk/src/protocol/srs_service_st.cpp
@@ -358,6 +358,11 @@ int srs_cond_signal(srs_cond_t cond)
     return st_cond_signal((st_cond_t)cond);
 }
 
+int srs_cond_broadcast(srs_cond_t cond)
+{
+    return st_cond_broadcast((st_cond_t)cond);
+}
+
 srs_mutex_t srs_mutex_new()
 {
     return (srs_mutex_t)st_mutex_new();
diff --git a/trunk/src/protocol/srs_service_st.hpp b/trunk/src/protocol/srs_service_st.hpp
index f3f0a8e80..ed86737d6 100644
--- a/trunk/src/protocol/srs_service_st.hpp
+++ b/trunk/src/protocol/srs_service_st.hpp
@@ -74,6 +74,7 @@ extern int srs_cond_destroy(srs_cond_t cond);
 extern int srs_cond_wait(srs_cond_t cond);
 extern int srs_cond_timedwait(srs_cond_t cond, srs_utime_t timeout);
 extern int srs_cond_signal(srs_cond_t cond);
+extern int srs_cond_broadcast(srs_cond_t cond);
 
 extern srs_mutex_t srs_mutex_new();
 extern int srs_mutex_destroy(srs_mutex_t mutex);