C# Class LazyCopy.Utilities.ResizableBuffer

This class maintains its own internal buffer and extends it, if the it is too small to fit the desired data.

The main reason of using this class is to avoid unnecessary memory allocations.
For example, the same memory can be used for getting the driver notification and then storing the reply message into, so there's no need to allocate two separate memory blocks.

Inheritance: IDisposable

显示文件 Open project: aleksk/LazyCopy Class Usage Examples

Public Methods

Method	Description
DangerousGetPointer ( ) : IntPtr	Gets the pointer to the internal buffer. Be careful with the pointer returned, because it may become invalid after the next Resize function call and after the ResizableBuffer instance is disposed.
Dispose ( ) : void	Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
ResizableBuffer ( ) : System	Initializes a new instance of the ResizableBuffer class. The Environment.SystemPageSize is passed as an initial size.
ResizableBuffer ( int initialSize ) : System	Initializes a new instance of the ResizableBuffer class.
Resize ( int newSize ) : void	Resizes the buffer. Be careful with the pointer returned, because it may become invalid after the next Resize function call and after the ResizableBuffer instance is disposed.

Protected Methods

Method	Description
Dispose ( bool disposing ) : void	Releases unmanaged and - optionally - managed resources.

Private Methods

Method	Description
EnsureBufferIsOfTheRightSize ( int newSize ) : void	Ensures that the current buffer can store the newSize bytes. If the current buffer is not large enough, it's extended.

Method Details

DangerousGetPointer() public method

Gets the pointer to the internal buffer.

Be careful with the pointer returned, because it may become invalid after the next Resize function call and after the ResizableBuffer instance is disposed.

Buffer is already disposed.

public DangerousGetPointer ( ) : IntPtr
return	System.IntPtr

Dispose() public method

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

public Dispose ( ) : void
return	void

Dispose() protected method

Releases unmanaged and - optionally - managed resources.

protected Dispose ( bool disposing ) : void
disposing	bool	/// to release both managed and unmanaged resources; to release only unmanaged resources. ///
return	void

ResizableBuffer() public method

Initializes a new instance of the ResizableBuffer class.

The Environment.SystemPageSize is passed as an initial size.

Buffer was not allocated.

public ResizableBuffer ( ) : System
return	System

ResizableBuffer() public method

Initializes a new instance of the ResizableBuffer class.

is lesser or equal to zero or greater than the maximum size allowed. Buffer was not allocated.

public ResizableBuffer ( int initialSize ) : System
initialSize	int	Initial buffer size.
return	System

Resize() public method

Resizes the buffer.

Be careful with the pointer returned, because it may become invalid after the next Resize function call and after the ResizableBuffer instance is disposed.

Buffer is already disposed. is lesser or equal to zero or greater than the maximum size allowed.

public Resize ( int newSize ) : void
newSize	int	The desired buffer size.
return	void