#include <simgear/compiler.h>
+#include <queue>
+
#include <plib/ssg.h>
#include <simgear/bucket/newbucket.hxx>
+#ifdef ENABLE_THREADS
+# include <simgear/threads/SGQueue.hxx>
+#endif // ENABLE_THREADS
+#include "FGTileLoader.hxx"
#include "hitlist.hxx"
#include "newcache.hxx"
// forward declaration
class FGTileEntry;
+class FGDeferredModel;
class FGTileMgr {
// initialize the cache
void initialize_queue();
- // forced emptying of the queue. This is necessay to keep
- // bookeeping straight for the tile_cache -- which actually
- // handles all the (de)allocations
- void destroy_queue();
-
// schedule a tile for loading
void sched_tile( const SGBucket& b );
double last_latitude;
/**
- *
+ * tile cache
*/
FGNewCache tile_cache;
+ /**
+ * Queue tiles for loading.
+ */
+ FGTileLoader loader;
+ int counter_hack;
+
+ /**
+ * Work queues.
+ *
+ * attach_queue is the tiles that have been loaded [by the pager]
+ * that can be attached to the scene graph by the render thread.
+ *
+ * model_queue is the set of models that need to be loaded by the
+ * primary render thread.
+ */
+#ifdef ENABLE_THREADS
+ static SGLockedQueue<FGTileEntry *> attach_queue;
+ static SGLockedQueue<FGDeferredModel *> model_queue;
+#else
+ static queue<FGTileEntry *> attach_queue;
+ static queue<FGDeferredModel *> model_queue;
+#endif // ENABLE_THREADS
+
+public:
+
+ /**
+ * Add a loaded tile to the 'attach to the scene graph' queue.
+ */
+ static void ready_to_attach( FGTileEntry *t ) { attach_queue.push( t ); }
+
+#ifdef WISH_PLIB_WAS_THREADED // but it isn't
+ /**
+ * Tile is detatched from scene graph and is ready to delete
+ */
+ inline void ready_to_delete( FGTileEntry *t ) { loader.remove( t ); }
+#endif
+
+ /**
+ * Add a pending model to the 'deferred model load' queue
+ */
+ static void model_ready( FGDeferredModel *dm ) { model_queue.push( dm ); }
+
public:
// Constructor