Merge remote-tracking branch 'lp-Com/use-monotonic' into 7.0

* lp-Com/use-monotonic:
  VxWorks: Measure CPU time-base frequency if necessary
  replace most internal getCurrent() -> getMonotonic()
  dbScan periodic scan use monotonic time
  monotonic adapt to regular time APIs

modules/ca/src/client/CASG.cpp

@@ -83,7 +83,7 @@ int CASG::block (
         return ECA_TIMEOUT;
     }
 
-    cur_time = epicsTime::getCurrent ();
+    cur_time = epicsTime::getMonotonic ();
 
     this->client.flush ( guard );
 
@@ -121,7 +121,7 @@ int CASG::block (
         /*
          * force a time update
          */
-        cur_time = epicsTime::getCurrent ();
+        cur_time = epicsTime::getMonotonic ();
 
         delay = cur_time - beg_time;
     }

modules/ca/src/client/ca_client_context.cpp

@@ -475,7 +475,7 @@ int ca_client_context::pendIO ( const double & timeout )
     }
 
     int status = ECA_NORMAL;
-    epicsTime beg_time = epicsTime::getCurrent ();
+    epicsTime beg_time = epicsTime::getMonotonic ();
     double remaining = timeout;
 
     epicsGuard < epicsMutex > guard ( this->mutex );
@@ -493,7 +493,7 @@ int ca_client_context::pendIO ( const double & timeout )
             this->blockForEventAndEnableCallbacks ( this->ioDone, remaining );
         }
 
-        double delay = epicsTime::getCurrent () - beg_time;
+        double delay = epicsTime::getMonotonic () - beg_time;
         if ( delay < timeout ) {
             remaining = timeout - delay;
         }
@@ -522,7 +522,7 @@ int ca_client_context::pendEvent ( const double & timeout )
         return ECA_EVDISALLOW;
     }
 
-    epicsTime current = epicsTime::getCurrent ();
+    epicsTime current = epicsTime::getMonotonic ();
 
     {
         epicsGuard < epicsMutex > guard ( this->mutex );
@@ -563,7 +563,7 @@ int ca_client_context::pendEvent ( const double & timeout )
         this->noWakeupSincePend = true;
     }
 
-    double elapsed = epicsTime::getCurrent() - current;
+    double elapsed = epicsTime::getMonotonic() - current;
     double delay;
 
     if ( timeout > elapsed ) {

modules/ca/src/client/cac.cpp

@@ -130,7 +130,7 @@ cac::cac (
     epicsMutex & callbackControlIn,
     cacContextNotify & notifyIn ) :
     _refLocalHostName ( localHostNameCache.getReference () ),
-    programBeginTime ( epicsTime::getCurrent() ),
+    programBeginTime ( epicsTime::getMonotonic() ),
     connTMO ( CA_CONN_VERIFY_PERIOD ),
     mutex ( mutualExclusionIn ),
     cbMutex ( callbackControlIn ),

modules/ca/src/client/casw.cpp

@@ -59,7 +59,7 @@ int main ( int argc, char ** argv )
     epicsMutex mutex;
     epicsGuard < epicsMutex > guard ( mutex );
     bheFreeStoreMgr bheFreeList;
-    epicsTime programBeginTime = epicsTime::getCurrent ();
+    epicsTime programBeginTime = epicsTime::getMonotonic ();
     bool validCommandLine = false;
     unsigned interest = 0u;
     SOCKET sock;
@@ -244,7 +244,7 @@ int main ( int argc, char ** argv )
                 ca_uint32_t beaconNumber = ntohl ( pCurMsg->m_cid );
                 unsigned protocolRevision = ntohs ( pCurMsg->m_dataType );
 
-                epicsTime currentTime = epicsTime::getCurrent();
+                epicsTime currentTime = epicsTime::getMonotonic();
 
                 /*
                  * look for it in the hash table

modules/ca/src/client/searchTimer.cpp

@@ -43,7 +43,7 @@ searchTimer::searchTimer (
         const unsigned indexIn, 
         epicsMutex & mutexIn,
         bool boostPossibleIn ) :
-    timeAtLastSend ( epicsTime::getCurrent () ),
+    timeAtLastSend ( epicsTime::getMonotonic () ),
     timer ( queueIn.createTimer () ),
     iiu ( iiuIn ),
     mutex ( mutexIn ),

modules/ca/src/client/tcpiiu.cpp

@@ -476,7 +476,7 @@ void tcpRecvThread::run ()
             statusWireIO stat;
             pComBuf->fillFromWire ( this->iiu, stat );
 
-            epicsTime currentTime = epicsTime::getCurrent ();
+            epicsTime currentTime = epicsTime::getMonotonic ();
 
             {
                 epicsGuard < epicsMutex > guard ( this->iiu.mutex );
@@ -1669,7 +1669,7 @@ bool tcpiiu::sendThreadFlush ( epicsGuard < epicsMutex > & guard )
 
     if ( this->sendQue.occupiedBytes() > 0 ) {
         while ( comBuf * pBuf = this->sendQue.popNextComBufToSend () ) {
-            epicsTime current = epicsTime::getCurrent ();
+            epicsTime current = epicsTime::getMonotonic ();
 
             unsigned bytesToBeSent = pBuf->occupiedBytes ();
             bool success = false;

modules/ca/src/client/udpiiu.cpp

@@ -435,7 +435,7 @@ void udpRecvThread::run ()
         }
         else if ( status > 0 ) {
             this->iiu.postMsg ( src, this->iiu.recvBuf, 
-                (arrayElementCount) status, epicsTime::getCurrent() );
+                (arrayElementCount) status, epicsTime::getMonotonic() );
         }
 
     } while ( ! this->iiu.shutdownCmd );