- Introduced a new trace facility

- Fixed performance problems in many protocol drivers.

pmacprot.c

@@ -16,6 +16,10 @@
  * copyright: see file COPYRIGHT
  * 
  * Mark Koennecke, December 2008
+ *
+ * Introduced a delay on read in order to throttle requests
+ *
+ * Mark Koennecke, June 2011
  */
 #include <errno.h>
 #include <ascon.h>
@@ -79,8 +83,12 @@ typedef struct {
   char *ptr;
   int bytesToWrite;
   int expectACK;
+  double startTime;
 } PMACPrivate, *pPMACPrivate;
-
+/*---------------------------------------------------------------------------*
+* wait period before read
+ ----------------------------------------------------------------------------*/
+#define READDELAY .05
 /*---------------------------------------------------------------------------*/
 static int PMACHandler(Ascon * a)
 {
@@ -123,11 +131,19 @@ static int PMACHandler(Ascon * a)
       a->wrPos += ret;
       if (a->wrPos >= priv->bytesToWrite) {
         a->state = AsconWriteDone;
+        priv->startTime = DoubleTime();
       } else {
         priv->ptr += ret;
       }
     }
     break;
+  case AsconReadStart:
+    DynStringClear(a->rdBuffer);
+    if(DoubleTime() > priv->startTime + READDELAY){
+    	a->start = DoubleTime();
+    	a->state = AsconReading;
+    }
+    break;
   case AsconReading:
     ret = AsconReadChar(a->fd, &chr);
     if (ret < 0) {
@@ -166,6 +182,7 @@ static int PMACHandler(Ascon * a)
           a->state = AsconTimeout;
         }
       }
+      return 0;
     }
     break;
   default: