Added some boieler plate code for the MME (contruct, singleton, destruct).

srsepc/docs/source/epc_design.rst

@@ -38,7 +38,7 @@ MME Design
 
 The srsMME must maintain three EPC interfaces, the S1-MME, the S11 and the S6a interfaces. The S1-MME will use an SCTP (many-to-one) socket and the S11 will use the GTP-Cv2 protocol over UDP. The S6a will be implmented as a Diameter application over UDP.
 
-The main loop of the MME will 
+The main loop of the MME will  
 
 HSS Design
 **********

srsepc/hdr/mme/mme.h

@@ -33,10 +33,17 @@
 #ifndef MME_H
 #define MME_H
 
+#include <cstddef>
+
 namespace srsepc{
 
 class mme
 {
+public:
+  mme* get_instance(void);
+
+  void cleanup(void);
+
 private:
 
   static mme *instance;

srsepc/src/mme/mme.cc

@@ -24,13 +24,38 @@
  *
  */
 
-
+#include <boost/thread/mutex.hpp>
 #include "mme/mme.h"
 
 namespace srsepc{
 
+mme*          mme::instance = NULL;
+boost::mutex  mme_instance_mutex;
+
+
+mme*
+mme::get_instance(void)
+{
+  boost::mutex::scoped_lock lock(mme_instance_mutex);
+  if(NULL == instance) {
+    instance = new mme();
+  }
+  return(instance);
+}
+
 mme::mme()
 {
 }
 
+void
+mme::cleanup(void)
+{
+  boost::mutex::scoped_lock lock(mme_instance_mutex);
+  if(NULL != instance) {
+    delete instance;
+    instance = NULL;
+  }
+}
+
+
 } //namespace srsepc