C# Class ServerToolkit.BufferManagement.MemorySlab

Represents a large fixed-length memory block where smaller variable-length memory blocks are dynamically allocated

Inheritance: IMemorySlab

显示文件 Open project: tenor/ServerToolkit Class Usage Examples

Public Methods

Method	Description
Free ( IMemoryBlock allocatedBlock ) : void	Frees an allocated memory block. This method does not verify if the allocatedBlock is indeed from this slab. Callers should make sure that the allocatedblock belongs to the right slab.
TryAllocate ( long length, IMemoryBlock &allocatedBlock ) : bool	Attempts to allocate a memory block of a specified length.
TryAllocate ( long minLength, long maxLength, IMemoryBlock &allocatedBlock ) : long	Attempts to allocate a memory block of length between minLength and maxLength (both inclusive) This overload is useful when multiple threads are concurrently working on the slab and the caller wants to allocate a block up to a desired size

Private Methods

Method	Description
AddFreeBlock ( long offset, long length, bool suppressSetLargest ) : void	Marks an allocated block as unallocated Set suppressSetLargest when the caller will the LargestFreeBlockSize after this method is called
GetLargest ( ) : long
MemorySlab ( long size, BufferPool pool ) : System	Initializes a new instance of the MemorySlab class
RemoveFreeBlock ( FreeSpace block, bool suppressSetLargest ) : void	Marks an unallocated contiguous block as allocated Set suppressSetLargest when the caller will the LargestFreeBlockSize after this method is called
SetLargest ( long value ) : void	Sets a new value as the largest unallocated contiguous block size
ShrinkFreeMemoryBlock ( FreeSpace block, long shrinkTo ) : void	Marks an unallocated contiguous block as allocated, and then marks an allocated block as unallocated
ShrinkOrRemoveFreeMemoryBlock ( FreeSpace block, long shrinkTo, bool suppressSetLargest ) : void	Marks an unallocated contiguous block as allocated, and then marks an allocated block as unallocated Set suppressSetLargest when the caller will the LargestFreeBlockSize after this method is calledDo not call this method directly, instead call ShrinkFreeMemoryBlock() or the FreeMemoryBlock()

Method Details

Free() public method

Frees an allocated memory block.

This method does not verify if the allocatedBlock is indeed from this slab. Callers should make sure that the allocatedblock belongs to the right slab.

public Free ( IMemoryBlock allocatedBlock ) : void
allocatedBlock	IMemoryBlock	Allocated memory block to be freed
return	void

TryAllocate() public method

Attempts to allocate a memory block of a specified length.

public TryAllocate ( long length, IMemoryBlock &allocatedBlock ) : bool
length	long	Length, in bytes, of memory block
allocatedBlock	IMemoryBlock	Allocated memory block
return	bool

TryAllocate() public method

Attempts to allocate a memory block of length between minLength and maxLength (both inclusive)

This overload is useful when multiple threads are concurrently working on the slab and the caller wants to allocate a block up to a desired size

public TryAllocate ( long minLength, long maxLength, IMemoryBlock &allocatedBlock ) : long
minLength	long	The minimum acceptable length
maxLength	long	The maximum acceptable length
allocatedBlock	IMemoryBlock	Allocated memory block
return	long