MeVisLab Toolbox Reference
mlWeakMemoryBlockHandle.h
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12 
13 #ifndef ML_WEAK_MEMORY_BLOCK_HANDLE_H
14 #define ML_WEAK_MEMORY_BLOCK_HANDLE_H
15 
16 #include "../mlMemoryManagerDllExport.h"
17 
18 class MLMemoryBlock;
19 class MLMemoryBlockHandle;
20 
21 
22 
26 class MLMEMORYMANAGER_EXPORT MLWeakMemoryBlockHandle
27 {
28 public:
30  MLWeakMemoryBlockHandle();
31 
35  MLWeakMemoryBlockHandle(const MLMemoryBlockHandle& memoryBlockHandle);
36 
38  MLWeakMemoryBlockHandle(const MLWeakMemoryBlockHandle& weakMemoryBlockHandle);
39 
42  ~MLWeakMemoryBlockHandle();
43 
50  MLWeakMemoryBlockHandle& operator=(const MLMemoryBlockHandle& memoryBlockHandle);
51 
54  MLWeakMemoryBlockHandle& operator=(const MLWeakMemoryBlockHandle& weakMemoryBlockHandle);
55 
57  bool isNull() const;
58  // End of group ThreadSafe
60 
63  void clear();
64 
65  bool deletionOngoing() const;
66 
67 
68 #ifndef DOXYGEN_SHOULD_SKIP_THIS
69 private:
70  void markMemoryBlockWasDeleted();
71 
73  MLMemoryBlock* setMemoryBlock(MLMemoryBlock* memoryBlock);
74  void setMemoryBlockFromStrongHandle(const MLMemoryBlockHandle& memoryBlockHandle);
75  void setMemoryBlockFromWeakHandle(const MLWeakMemoryBlockHandle& weakMemoryBlockHandle);
76 
77 
78  MLMemoryBlock* _memoryBlock;
79  MLWeakMemoryBlockHandle* _next;
80  MLWeakMemoryBlockHandle* _previous;
81  bool _deletionOngoing;
82 
83  friend class MLMemoryBlock;
84  friend class MLMemoryBlockHandle;
85  friend class MLMemoryManager;
86 #endif
87 };
88 
89 #endif // MLWEAKMEMORYBLOCKHANDLE_H_INCLUDED
MLMemoryBlockHandle
The strong handle of a MLMemoryBlock.
Definition: mlMemoryBlockHandle.h:39
MLMemoryManager
The memory manager.
Definition: mlMemoryManager.h:87
MLWeakMemoryBlockHandle
The weak handle of a MLMemoryBlock.
Definition: mlWeakMemoryBlockHandle.h:27
MLWeakMemoryBlockHandle::clear
void clear()
Releases this handle from the memory block.
MLWeakMemoryBlockHandle::MLWeakMemoryBlockHandle
MLWeakMemoryBlockHandle(const MLWeakMemoryBlockHandle &weakMemoryBlockHandle)
Creates a weak memory block handle from another weak handle.
MLWeakMemoryBlockHandle::~MLWeakMemoryBlockHandle
~MLWeakMemoryBlockHandle()
If this is the last weak handle of the memory block, and no strong handle references it,...
MLWeakMemoryBlockHandle::MLWeakMemoryBlockHandle
MLWeakMemoryBlockHandle(const MLMemoryBlockHandle &memoryBlockHandle)
Creates a weak memory block handle from the the strong handle.
MLWeakMemoryBlockHandle::deletionOngoing
bool deletionOngoing() const
MLWeakMemoryBlockHandle::MLWeakMemoryBlockHandle
MLWeakMemoryBlockHandle()
Creates a weak memory block handle that is null.
MLWeakMemoryBlockHandle::operator=
MLWeakMemoryBlockHandle & operator=(const MLWeakMemoryBlockHandle &weakMemoryBlockHandle)
Creates a weak memory block handle from the memory block handle.
MLWeakMemoryBlockHandle::operator=
MLWeakMemoryBlockHandle & operator=(const MLMemoryBlockHandle &memoryBlockHandle)
Creates a weak memory block handle from the memory block handle.
MLWeakMemoryBlockHandle::isNull
bool isNull() const
Returns true if the weak memory block references a NULL memory block.