comp • gb.data • circular

Circular (gb.data)

A Circular buffer, or Circular for short, is a fixed-size buffer with one read and one write pointer. When data is read/written, the proper pointer is moved forward independently of the other one. When the end of the buffer is reached, the pointer wraps around to the beginning. Thus, old never-read values can be overwritten.

This datatype may be ideal for communications between entities where it does not really matter when old values get overwritten, but we still want a fixed-size buffer. For example, log messages are traditionally treated using this technique.

More information on circular buffers on Wikipedia

This class is
Dim hCircular As Circular
creatable
.

Properties

Methods
property Read IsEmpty As Boolean
IsEmpty  
property Read IsFull As Boolean
IsFull  
property Overwrite As Boolean
Overwrite  
property Reader As Integer
Reader  
property Size As Integer
Size  
property Writer As Integer
Writer  
Sub Clear ( )
Clear  
Function Peek ( ) As Variant
Peek  
Function Read ( ) As Variant
Read  
Sub Reset ( )
Reset  
Sub Resize ( Size As Integer )
Resize  
Sub Write ( Value As Variant )
Write