1 files changed, 12 insertions, 0 deletions
diff --git a/cpukit/score/src/once.c b/cpukit/score/src/once.c
index 427659e173..5237c11878 100644
--- a/cpukit/score/src/once.c
+++ b/cpukit/score/src/once.c
@@ -54,3 +54,15 @@ int _Once( unsigned char *once_state, void ( *init_routine )( void ) )
 
   return eno;
 }
+
+static API_Mutex_Control _Once_Mutex = API_MUTEX_INITIALIZER( "_Once" );
+
+void _Once_Lock( void )
+{
+  _API_Mutex_Lock( &_Once_Mutex );
+}
+
+void _Once_Unlock( void )
+{
+  _API_Mutex_Unlock( &_Once_Mutex );
+}