fixed docygen comment.

Author: HerbertKoelman

include/pthread/exceptions.hpp

@@ -125,22 +125,34 @@ namespace pthread {
      */
     class queue_exception : public std::exception {
     public:
+      /**
+       * new instance.
+       *
+       * @param msg explanatory message.
+       */
       explicit queue_exception(const std::string &msg = "queue_error occured.");
 
+      /** @return an explanatory message
+       */
 #if __cplusplus < 201103L
       virtual const char *what() const throw();
 #else
       virtual const char *what() const noexcept override;
 #endif
 
     protected:
-      std::string _message;
+      std::string _message; //!< message buffer
     };
 
     /** thrown when the queue's max_size is reached
      */
     class queue_full: public queue_exception{
     public:
+      /**
+       * new instance.
+       *
+       * @param msg explanatory message.
+       */
       explicit queue_full(const std::string &msg = "synchronized_queue full.");
 
     };
@@ -149,6 +161,11 @@ namespace pthread {
      */
     class queue_timeout: public queue_exception{
     public:
+      /**
+       * new instance.
+       *
+       * @param msg explanatory message.
+       */
       explicit queue_timeout(const std::string &msg = "synchronized_queue get/put timed out.");
 
     };

include/pthread/sync_queue.hpp

@@ -68,13 +68,13 @@ namespace pthread {
       /** Get an item from the queue, if empty wait for one during duration milliseconds.
        *
        * @param item item that will receive an item found onto the queue.
-       * @param duration duration we are willing to wait for a new item.
+       * @param wait_time duration we are willing to wait for a new item.
        *
        * @throw queue_exception when an error occurs.
        */
       void get ( T& item, int wait_time );
 
-      /** @rerturn true if queue is empty */
+      /** @return true if queue is empty */
       bool empty() const {
         return _items.empty();
       }