Internal metadata structure for RingBuffer. More...

#include <RingBuffer.h>

Public Attributes
int	size
	ring buffer size (integers), minus this header.

int	remain
	Unsure, always equal to size.

int	wptr
	Pointer for writing entries.

int	prevwptr
	Previous state of wptr (for error recovery).

int	rptr
	Pointer for reading entries.

int	nbuf
	Number of entries in ring buffer.

int	semid
	Semaphore ID.

int	nattached
	Number of RingBuffer instances currently attached to this buffer.

int	nbusy
	Number of attached reading processes currently processing events.

int	__readbuf
	Unused.

int	errtype
	Error state? 0: Normal, 1: buffer full and wptr>rptr, others are complicated.

int	numAttachedTx
	number of attached sending processes. More...

int	ninsq
	Count insq() calls for this buffer.

int	nremq
	Count remq() calls for this buffer.

Detailed Description

Internal metadata structure for RingBuffer.

Placed on top of the shared memory.

Definition at line 21 of file RingBuffer.h.

Member Data Documentation

int numAttachedTx

number of attached sending processes.

0: Processes reading from this buffer should terminate once it's empty. -1: attach pending (initial state)

Definition at line 33 of file RingBuffer.h.

The documentation for this struct was generated from the following file: