kthread.h

linux下蓝牙

/*
  KThreads: Thanks to http://www.scs.ch/~frey/linux/kernelthreads.html
*/

#ifndef _KTHREAD_H
#define _KTHREAD_H

#include <linux/config.h>
#include <linux/version.h>

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/wait.h>

#include <linux/unistd.h>
#include <linux/tqueue.h>
#include <asm/semaphore.h>

#include <linux/smp_lock.h>


/* a structure to store all information we need
   for our thread */

typedef struct kthread_struct {
	/* private data */

	/* Linux task structure of thread */
	struct task_struct *thread;
	/* Task queue need to launch thread */
	struct tq_struct tq;
	/* function to be started as thread */
	void (*function) (struct kthread_struct * kthread);
	/* semaphore needed on start and creation of thread. */
	struct semaphore startstop_sem;

	/* public data */

	/* queue thread is waiting on. Gets initialized by
	   init_kthread, can be used by thread itself.
	 */
	wait_queue_head_t queue;
	/* flag to tell thread whether to die or not.
	   When the thread receives a signal, it must check
	   the value of terminate and call exit_kthread and terminate
	   if set.
	 */
	int terminate;
	/* additional data to pass to kernel thread */
	void *arg;
} kthread_t;

/* prototypes */

/* start new kthread (called by creator) */
void start_kthread(void (*func) (kthread_t *), kthread_t * kthread);

/* stop a running thread (called by "killer") */
void stop_kthread(kthread_t * kthread);

/* setup thread environment (called by new thread) */
void init_kthread(kthread_t * kthread, char *name);

/* cleanup thread environment (called by thread upon receiving termination signal) */
void exit_kthread(kthread_t * kthread);

#endif