src/add-ons/kernel/file_systems/userlandfs/shared/ObjectTracker.cpp

   1 // ObjectTracker.h
   2
   3 #include <new>
   4 #include <typeinfo>
   5
   6 #include <AutoLocker.h>
   7
   8 #include "Debug.h"
   9 #include "ObjectTracker.h"
  10
  11 static char sTrackerBuffer[sizeof(ObjectTracker)];
  12
  13 // constructor
  14 ObjectTrackable::ObjectTrackable()
  15 {
  16         ObjectTracker* tracker = ObjectTracker::GetDefault();
  17         if (tracker != NULL)
  18                 tracker->AddTrackable(this);
  19 }
  20
  21 // destructor
  22 ObjectTrackable::~ObjectTrackable()
  23 {
  24         ObjectTracker* tracker = ObjectTracker::GetDefault();
  25         if (tracker != NULL)
  26                 tracker->RemoveTrackable(this);
  27 }
  28
  29
  30 // #pragma mark -
  31
  32 // constructor
  33 ObjectTracker::ObjectTracker()
  34         : fLock("object tracker"),
  35           fTrackables()
  36 {
  37 }
  38
  39 // destructor
  40 ObjectTracker::~ObjectTracker()
  41 {
  42         ObjectTrackable* trackable = fTrackables.First();
  43         if (trackable) {
  44                 WARN(("ObjectTracker: WARNING: There are still undeleted objects:\n"));
  45 #ifndef _KERNEL_MODE
  46                 for (; trackable; trackable = fTrackables.GetNext(trackable)) {
  47                         WARN(("  trackable: %p: type: `%s'\n", trackable,
  48                                 typeid(*trackable).name()));
  49                 }
  50 #endif
  51         }
  52 }
  53
  54 // InitDefault
  55 ObjectTracker*
  56 ObjectTracker::InitDefault()
  57 {
  58         if (!sTracker)
  59                 sTracker = new(sTrackerBuffer) ObjectTracker;
  60         return sTracker;
  61 }
  62
  63 // ExitDefault
  64 void
  65 ObjectTracker::ExitDefault()
  66 {
  67         if (sTracker) {
  68                 sTracker->~ObjectTracker();
  69                 sTracker = NULL;
  70         }
  71 }
  72
  73 // GetDefault
  74 ObjectTracker*
  75 ObjectTracker::GetDefault()
  76 {
  77         return sTracker;
  78 }
  79
  80 // AddTrackable
  81 void
  82 ObjectTracker::AddTrackable(ObjectTrackable* trackable)
  83 {
  84         if (trackable) {
  85                 AutoLocker<Locker> _(fLock);
  86                 fTrackables.Insert(trackable);
  87         }
  88 }
  89
  90 // RemoveTrackable
  91 void
  92 ObjectTracker::RemoveTrackable(ObjectTrackable* trackable)
  93 {
  94         if (trackable) {
  95                 AutoLocker<Locker> _(fLock);
  96                 fTrackables.Remove(trackable);
  97         }
  98 }
  99
 100 // sTracker
 101 ObjectTracker* ObjectTracker::sTracker = NULL;
 102