#include <simgear/nasal/nasal.h>
#include <simgear/scene/model/modellib.hxx>
#include <simgear/xml/easyxml.hxx>
+#include <simgear/threads/SGQueue.hxx>
#include <map>
-using std::map;
class FGNasalScript;
class FGNasalListener;
+class SGCondition;
+
+/** Nasal model data container.
+ * load and unload methods must be run in main thread (not thread-safe). */
+class FGNasalModelData : public SGReferenced
+{
+public:
+ /** Constructor to be run in an arbitrary thread. */
+ FGNasalModelData(SGPropertyNode *root, const string& path, SGPropertyNode *prop,
+ SGPropertyNode* load, SGPropertyNode* unload) :
+ _path(path),
+ _root(root), _prop(prop),
+ _load(load), _unload(unload)
+ {
+ }
+
+ /** Load hook. Always call from inside the main loop. */
+ void load();
+
+ /** Unload hook. Always call from inside the main loop. */
+ void unload();
+
+private:
+ static unsigned int _module_id;
+
+ string _module, _path;
+ SGPropertyNode_ptr _root, _prop;
+ SGConstPropertyNode_ptr _load, _unload;
+};
+
+/** Thread-safe proxy for FGNasalModelData.
+ * modelLoaded/destroy methods only register the requested
+ * operation. Actual (un)loading of Nasal module is deferred
+ * and done in the main loop. */
+class FGNasalModelDataProxy : public simgear::SGModelData
+{
+public:
+ FGNasalModelDataProxy(SGPropertyNode *root = 0) :
+ _root(root), _data(0)
+ {
+ }
+
+ ~FGNasalModelDataProxy();
+
+ void modelLoaded(const string& path, SGPropertyNode *prop, osg::Node *);
+
+protected:
+ SGPropertyNode_ptr _root;
+ SGSharedPtr<FGNasalModelData> _data;
+};
+
+SGPropertyNode* ghostToPropNode(naRef ref);
+SGCondition* conditionGhost(naRef r);
class FGNasalSys : public SGSubsystem
{
naRef cmdArgGhost();
// Callbacks for command and timer bindings
+ virtual bool handleCommand( const char* moduleName,
+ const char* fileName,
+ const char* src,
+ const SGPropertyNode* arg = 0 );
virtual bool handleCommand(const SGPropertyNode* arg);
bool createModule(const char* moduleName, const char* fileName,
void deleteModule(const char* moduleName);
+ /**
+ * Set member of specified hash to given value
+ */
+ void hashset(naRef hash, const char* key, naRef val);
+
+ /**
+ * Set member of globals hash to given value
+ */
+ void globalsSet(const char* key, naRef val);
+
naRef call(naRef code, int argc, naRef* args, naRef locals);
+
+ naRef callMethod(naRef code, naRef self, int argc, naRef* args, naRef locals);
+
naRef propNodeGhost(SGPropertyNode* handle);
-
+
+ void registerToLoad(FGNasalModelData* data) { _loadList.push(data);}
+ void registerToUnload(FGNasalModelData* data) { _unloadList.push(data);}
+
+ // can't call this 'globals' due to naming clash
+ naRef nasalGlobals() const
+ { return _globals; }
+
+ naContext context() const
+ { return _context; }
+
+ // This mechanism is here to allow naRefs to be passed to
+ // locations "outside" the interpreter. Normally, such a
+ // reference would be garbage collected unexpectedly. By passing
+ // it to gcSave and getting a key/handle, it can be cached in a
+ // globals.__gcsave hash. Be sure to release it with gcRelease
+ // when done.
+ int gcSave(naRef r);
+ void gcRelease(int key);
private:
friend class FGNasalScript;
friend class FGNasalListener;
friend class FGNasalModuleListener;
+ SGLockedQueue<SGSharedPtr<FGNasalModelData> > _loadList;
+ SGLockedQueue<SGSharedPtr<FGNasalModelData> > _unloadList;
+
//
// FGTimer subclass for handling Nasal timer callbacks.
// See the implementation of the settimer() extension function for
};
// Listener
- map<int, FGNasalListener *> _listener;
+ std::map<int, FGNasalListener *> _listener;
vector<FGNasalListener *> _dead_listener;
static int _listenerId;
void loadPropertyScripts(SGPropertyNode* n);
void loadScriptDirectory(simgear::Dir nasalDir);
void addModule(string moduleName, simgear::PathList scripts);
- void hashset(naRef hash, const char* key, naRef val);
void logError(naContext);
naRef parse(const char* filename, const char* buf, int len);
naRef genPropsModule();
- // This mechanism is here to allow naRefs to be passed to
- // locations "outside" the interpreter. Normally, such a
- // reference would be garbage collected unexpectedly. By passing
- // it to gcSave and getting a key/handle, it can be cached in a
- // globals.__gcsave hash. Be sure to release it with gcRelease
- // when done.
- int gcSave(naRef r);
- void gcRelease(int key);
-
naContext _context;
naRef _globals;
};
-class FGNasalModelData : public simgear::SGModelData {
-public:
- FGNasalModelData(SGPropertyNode *root = 0) : _root(root), _unload(0) {}
- ~FGNasalModelData();
- void modelLoaded(const string& path, SGPropertyNode *prop, osg::Node *);
-
-private:
- static unsigned int _module_id;
- string _module;
- SGPropertyNode_ptr _root;
- SGConstPropertyNode_ptr _unload;
-};
-
-
class NasalXMLVisitor : public XMLVisitor {
public:
NasalXMLVisitor(naContext c, int argc, naRef* args);