Howto:Exposing Subsystems to Nasal: Difference between revisions

Howto:Exposing Subsystems to Nasal (view source)

Revision as of 16:25, 7 February 2016

2,155 bytes added , 7 February 2016

→‎Patching

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@@ Line 36: / Line 36: @@
 == Patching ==
+For starters, we will just add some debugging statements to the event manager
 <syntaxhighlight lang="diff">
+diff --git a/simgear/structure/event_mgr.cxx b/simgear/structure/event_mgr.cxx
+index 2e4f7b7..eb892ad 100644
+--- a/simgear/structure/event_mgr.cxx
++++ b/simgear/structure/event_mgr.cxx
+@@ -24,9 +24,26 @@ void SGEventMgr::add(const std::string& name, SGCallback* cb,
+     SGTimerQueue* q = simtime ? &_simQueue : &_rtQueue;
++    SG_LOG(SG_GENERAL, SG_ALERT, "== Inserting timer into queue" <<
++	"\t type:" << name <<
++	"\t interval:" << interval <<
++	"\t delay:" << delay <<
++	"\t repeated:" << repeat <<
++	"\t simtime/realtime:" << simtime <<"/"<<!simtime
++	<< std::endl);
++
++    info();
+     q->insert(t, delay);
+ }
++void info() {
++    SG_LOG(SG_GENERAL, SG_ALERT, "Total Entries in queues" <<
++	"\t simtime queue:" << _simQueue->getQueueSize() << std::endl
++	"\t realtime queue:" << _rtQueue->getQueueSize() << std::endl
++	);
++}
++
++
+ SGTimer::~SGTimer()
+ {
+     delete callback;
+diff --git a/simgear/structure/event_mgr.hxx b/simgear/structure/event_mgr.hxx
+index 699522b..0cab8b7 100644
+--- a/simgear/structure/event_mgr.hxx
++++ b/simgear/structure/event_mgr.hxx
+@@ -38,6 +38,9 @@ public:
+     double   nextTime()  { return -_table[0].pri; }
+     SGTimer* findByName(const std::string& name) const;
++    unsigned int getQueueSize() const {
++		return _numEntries;
++	}
+ private:
+     // The "priority" is stored as a negative time.  This allows the
+     // implementation to treat the "top" of the heap as the largest
+@@ -76,6 +79,7 @@ public:
+     virtual void update(double delta_time_sec);
+     virtual void unbind();
+     virtual void shutdown();
++    virtual void info(); // dumps queue info to the console
+     void setRealtimeProperty(SGPropertyNode* node) { _rtProp = node; }
+@@ -120,6 +124,11 @@ public:
+     void removeTask(const std::string& name);
+ private:
++
++    typedef std::pair<std::string, int> CallbackInfo; //callback name & number of instances
++    typedef std::map<SGCallback*, CallbackInfo> CallbackMap;
++    CallbackMap _registeredCallbacks;
++
+     friend class SGTimer;
+     void add(const std::string& name, SGCallback* cb,
 </syntaxhighlight>