- added scriptcontext.h

- killing a node using sct should now be safe
- sctdrive adapter object might be dynamic
- default for the checkstatus script: returning the status property
- introduced <sctcon> unpoll
- changed <sctcon> queuecon to <sctcon> send
- some more improvements in sct

devser.h

@@ -15,12 +15,12 @@ typedef struct DevSer DevSer;
  */
 typedef char *DevActionHandler(void *actionData, char *lastReply);
 
-/** \brief Check if two actions match
- * \param actionData1 the first action data
- * \param actionData2 the second action data
+/** \brief Check if an action matches the call data
+ * \param callData the callers data
+ * \param actionData the action data
  * \return 1 on a match, 0 on no match
  */
-typedef int DevActionMatch(void *actionData1, void *actionData2);
+typedef int DevActionMatch(void *callData, void *actionData);
 
 /** \brief Kill ActionData
  * \param actionData action data
@@ -48,7 +48,9 @@ DevSer *DevMake(SConnection *con, int argc, char *argv[]);
  */
 void DevDebugMode(DevSer *devser, int steps);
 
-/** \brief Kill the device serializer and its async connection.
+/** \brief Kill the contents of the device serializer and its async connection.
+ * 
+ * The data structure itself is killed at some time later
  * \param devser the device serializer
  */
 void DevKill(DevSer *devser);
@@ -79,24 +81,32 @@ void DevQueue(DevSer *devser, void *actionData, DevPrio prio,
  * \param prio the priority
  * \param interval the interval in seconds (0 is allowed)
  * \param hdl the action handler
- * \param matchFunc the match function
+ * \param matchFunc the match function (callData must be of the same type as actionData)
  * \param killFunc the action data kill function (called from DevKill and
  *    from DevUnschedule) or NULL if no kill function is needed.
+ * \return 0 when this was a new action, > 0 when an action was overwritten
  */
-void DevSchedule(DevSer *devser, void *actionData,
+int DevSchedule(DevSer *devser, void *actionData,
                  DevPrio prio, double interval,
                  DevActionHandler hdl, DevActionMatch *matchFunc,
                  DevKillActionData *killFunc);
 
 /** \brief Unschedule matching actions
  * \param devser the device serializer
- * \param actionData the action data to be compared for a match
+ * \param callData the callers data to be as first argument of the match function
  * \param hdl the action handler
- * \param matchFunc the match function
+ * \param matchFunc the match function (callData does not need to have the same type as actionData)
+ * \return the number of unscheduled actions 
  */
 int DevUnschedule(DevSer *devser, void *actionData,
                   DevActionHandler hdl, DevActionMatch *matchFunc);
 
+/** \brief remove action from the serializer
+ * \param devser the device serializer
+ * \param actionData the action data to be compared for a match
+ */
+int DevRemoveAction(DevSer *devser, void *actionData);
+
 /** \brief Convert integer priority to text
  * \param prio
  * \return text