Added connection assertion and moved msgPrintControl to key

src/msgPrintControl.h

@@ -1,6 +1,8 @@
 #ifndef msgPrintControl_H
 #define msgPrintControl_H
 
+#define DefaultMaxRepetitions 4
+
 #include <asynDriver.h>
 #include <string.h>
 #include <string>
@@ -21,8 +23,15 @@ class msgPrintControlKey {
     const char *functionName_;
     int line_;
 
+    /**
+     * @brief Maximum number of times a message is printed before it is
+     * suppressed. This number is not used as part of the hash.
+     *
+     */
+    size_t maxRepetitions_;
+
     msgPrintControlKey(char *controller_, int axisNo, const char *fileName,
-                       int line);
+                       int line, size_t maxRepetitions = DefaultMaxRepetitions);
 
     bool operator==(const msgPrintControlKey &other) const {
         return axisNo_ == other.axisNo_ && line_ == other.line_ &&
@@ -73,8 +82,6 @@ template <> struct hash<msgPrintControlKey> {
  */
 class msgPrintControl {
   public:
-    msgPrintControl(size_t maxRepetitions);
-
     /**
      * @brief Checks if the error message associated with "key" has been printed
      * more than `this->maxRepetitions_` times in a row. If yes, returns false,
@@ -115,7 +122,8 @@ class msgPrintControl {
      * @param pasynUser
      */
     bool shouldBePrinted(char *controller, int axisNo, const char *functionName,
-                         int line, bool wantToPrint, asynUser *pasynUser);
+                         int line, bool wantToPrint, asynUser *pasynUser,
+                         size_t maxRepetitions = DefaultMaxRepetitions);
 
     /**
      * @brief Reset the error message count incremented in `shouldBePrinted` for
@@ -129,13 +137,6 @@ class msgPrintControl {
      */
     void resetCount(msgPrintControlKey &key, asynUser *pasynUser);
 
-    /**
-     * @brief Maximum number of times a message is printed before it is
-     * suppressed.
-     *
-     */
-    size_t maxRepetitions_;
-
     char *getSuffix();
 
   private: