ZCOM Tables and Data Structures

Data Buffer Pool

Figure 3-8 Buffer Pool Layout (when first initialized)

Free Queue Header

List Head List Tail

Block Block

Pointer Pointer

Dummy Free Buffer

Dummy

Dummy

Buffer

Next

Previous

 

Buffer

Used

Used

Flag

Block

Block

 

Flag

Flag

Flag

 

Pointer

Pointer

 

 

 

 

 

 

 

 

 

Main Free Buffer

Dummy

Dummy

Buffer

Next

Previous

 

Used

Used

Flag

Block

Block

 

Flag

Flag

 

Pointer

Pointer

 

 

 

 

 

 

 

Buffer Dummy Dummy

Flag Used Used

Flag Flag

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Chapter 3