use singleton for epics timer queue manager

src/libCom/timer/epicsTimer.cpp

@@ -76,7 +76,7 @@ epicsTimerQueueActiveForC::~epicsTimerQueueActiveForC ()
 
 void epicsTimerQueueActiveForC::release ()
 {
-    queueMgr.release ( *this );
+    pTimerQueueMgrEPICS->release ( *this );
 }
 
 epicsTimerQueuePassiveForC::epicsTimerQueuePassiveForC 
@@ -144,7 +144,8 @@ extern "C" epicsTimerQueueId epicsShareAPI
     epicsTimerQueueAllocate ( int okToShare, unsigned int threadPriority )
 {
     try {
-        epicsTimerQueueActiveForC &tmr = queueMgr.allocate ( okToShare ? true : false, threadPriority );
+        epicsTimerQueueActiveForC &tmr = 
+            pTimerQueueMgrEPICS->allocate ( okToShare ? true : false, threadPriority );
         return &tmr;
     }
     catch ( ... ) {

src/libCom/timer/timerPrivate.h

@@ -160,7 +160,7 @@ private:
     timerQueueActiveMgr & operator = ( const timerQueueActiveMgr & );
 };
 
-extern timerQueueActiveMgr queueMgr;
+extern epicsSingleton < timerQueueActiveMgr > pTimerQueueMgrEPICS;
 
 class timerQueuePassive : public epicsTimerQueuePassive {
 public:

src/libCom/timer/timerQueueActive.cpp

@@ -31,13 +31,13 @@
 #define epicsExportSharedSymbols
 #include "timerPrivate.h"
 
-timerQueueActiveMgr queueMgr;
+epicsSingleton < timerQueueActiveMgr > pTimerQueueMgrEPICS;
 
 epicsTimerQueueActive::~epicsTimerQueueActive () {}
 
 epicsTimerQueueActive &epicsTimerQueueActive::allocate ( bool okToShare, unsigned threadPriority )
 {
-    return queueMgr.allocate ( okToShare, threadPriority );
+    return pTimerQueueMgrEPICS->allocate ( okToShare, threadPriority );
 }
 
 timerQueueActive::timerQueueActive ( bool okToShareIn, unsigned priority ) :