81 lines
1.6 KiB
C++
81 lines
1.6 KiB
C++
// ObjectTracker.h
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#ifndef USERLAND_FS_OBJECT_TRACKER_H
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#define USERLAND_FS_OBJECT_TRACKER_H
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#include "DLList.h"
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#include "Locker.h"
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namespace UserlandFSUtil {
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class ObjectTracker;
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class GetObjectTrackableLink;
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// ObjectTrackable
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class ObjectTrackable {
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public:
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ObjectTrackable();
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virtual ~ObjectTrackable();
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private:
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friend class ObjectTracker;
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friend class GetObjectTrackableLink;
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DLListLink<ObjectTrackable> fLink;
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};
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// GetObjectTrackableLink
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struct GetObjectTrackableLink {
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inline DLListLink<ObjectTrackable> *operator()(
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ObjectTrackable* trackable) const
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{
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return &trackable->fLink;
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}
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inline const DLListLink<ObjectTrackable> *operator()(
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const ObjectTrackable* trackable) const
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{
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return &trackable->fLink;
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}
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};
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// ObjectTracker
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class ObjectTracker {
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private:
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ObjectTracker();
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~ObjectTracker();
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public:
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static ObjectTracker* InitDefault();
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static void ExitDefault();
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static ObjectTracker* GetDefault();
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private:
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friend class ObjectTrackable;
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void AddTrackable(ObjectTrackable* trackable);
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void RemoveTrackable(ObjectTrackable* trackable);
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private:
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Locker fLock;
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DLList<ObjectTrackable, GetObjectTrackableLink> fTrackables;
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static ObjectTracker* sTracker;
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};
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} // namespace UserlandFSUtil
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using UserlandFSUtil::ObjectTrackable;
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using UserlandFSUtil::ObjectTracker;
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#ifdef DEBUG_OBJECT_TRACKING
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# define ONLY_OBJECT_TRACKABLE_BASE_CLASS : private ObjectTrackable
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# define FIRST_OBJECT_TRACKABLE_BASE_CLASS private ObjectTrackable,
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#else
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# define ONLY_OBJECT_TRACKABLE_BASE_CLASS
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# define FIRST_OBJECT_TRACKABLE_BASE_CLASS
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#endif
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#endif // USERLAND_FS_OBJECT_TRACKER_H
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