GenericQueue Struct Reference [I/O Queues]

Generic I/O queue structure. More...

#include <chqueues.h>

Collaboration diagram for GenericQueue:

Data Fields
uint8_t *	q_buffer
	Pointer to the queue buffer.
uint8_t *	q_top
	Pointer to the first location after the buffer.
uint8_t *	q_wrptr
	Write pointer.
uint8_t *	q_rdptr
	Read pointer.
Semaphore	q_sem
	Counter Semaphore.
qnotify_t	q_notify
	Data notification callback.

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Detailed Description

Generic I/O queue structure.

This structure represents a generic Input or Output asymmetrical queue. The queue is asymmetrical because one end is meant to be accessed from a thread context, and thus can be blocking, the other end is accessible from interrupt handlers or from within a kernel lock zone (see I-Locked and S-Locked states in System States) and is non-blocking.

Definition at line 70 of file chqueues.h.

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Field Documentation

uint8_t* GenericQueue::q_buffer

Pointer to the queue buffer.

Definition at line 71 of file chqueues.h.

Referenced by chIQGetTimeout(), chIQInit(), chIQPutI(), chIQReadTimeout(), chIQResetI(), chOQGetI(), chOQInit(), chOQPutTimeout(), chOQResetI(), and chOQWriteTimeout().

uint8_t* GenericQueue::q_top

Pointer to the first location after the buffer.

Definition at line 72 of file chqueues.h.

Referenced by chIQGetTimeout(), chIQInit(), chIQPutI(), chIQReadTimeout(), chOQGetI(), chOQInit(), chOQPutTimeout(), chOQResetI(), and chOQWriteTimeout().

uint8_t* GenericQueue::q_wrptr

Write pointer.

Definition at line 74 of file chqueues.h.

Referenced by chIQInit(), chIQPutI(), chIQResetI(), chOQInit(), chOQPutTimeout(), chOQResetI(), and chOQWriteTimeout().

uint8_t* GenericQueue::q_rdptr

Read pointer.

Definition at line 75 of file chqueues.h.

Referenced by chIQGetTimeout(), chIQInit(), chIQReadTimeout(), chIQResetI(), chOQGetI(), chOQInit(), and chOQResetI().

Semaphore GenericQueue::q_sem

Counter Semaphore.

Definition at line 76 of file chqueues.h.

Referenced by chIQGetTimeout(), chIQInit(), chIQPutI(), chIQReadTimeout(), chIQResetI(), chOQGetI(), chOQInit(), chOQPutTimeout(), chOQResetI(), and chOQWriteTimeout().

qnotify_t GenericQueue::q_notify

Data notification callback.

Definition at line 77 of file chqueues.h.

Referenced by chIQGetTimeout(), chIQInit(), chIQReadTimeout(), chOQInit(), chOQPutTimeout(), and chOQWriteTimeout().