buffer
Factor handbook » The language » Collections » Locked I/O buffers

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<buffer> ( n -- buffer )

Vocabulary
io.buffers

Class description
The class of I/O buffers, which resemble FIFO queues, but are optimized for holding bytes, are have underlying storage allocated at a fixed address. Buffers must be de-allocated manually. It has the following slots:

size	The total size, in bytes, of the buffer
ptr	The c-ptr memory where data is stored
fill	The fill pointer, a write index where new data is added
pos	The position, a read index where data is consumed

Definition

USING: alien alien.syntax math ;

IN: io.buffers

TUPLE: buffer
    { size fixnum initial: 0 } { ptr alien initial: BAD-ALIEN }
    { fill fixnum initial: 0 } { pos fixnum initial: 0 }
    disposed ;

Methods

USING: accessors destructors io.buffers libc ;

M: buffer dispose* ptr>> free ; inline