workqueue.h
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上传日期:2009-04-28
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文件大小:3k
- /*
- * workqueue.h --- work queue handling for Linux.
- */
- #ifndef _LINUX_WORKQUEUE_H
- #define _LINUX_WORKQUEUE_H
- #include <linux/timer.h>
- #include <linux/linkage.h>
- #include <linux/bitops.h>
- struct workqueue_struct;
- struct work_struct {
- unsigned long pending;
- struct list_head entry;
- void (*func)(void *);
- void *data;
- void *wq_data;
- struct timer_list timer;
- };
- #define __WORK_INITIALIZER(n, f, d) {
- .entry = { &(n).entry, &(n).entry },
- .func = (f),
- .data = (d),
- .timer = TIMER_INITIALIZER(NULL, 0, 0),
- }
- #define DECLARE_WORK(n, f, d)
- struct work_struct n = __WORK_INITIALIZER(n, f, d)
- /*
- * initialize a work-struct's func and data pointers:
- */
- #define PREPARE_WORK(_work, _func, _data)
- do {
- (_work)->func = _func;
- (_work)->data = _data;
- } while (0)
- /*
- * initialize all of a work-struct:
- */
- #define INIT_WORK(_work, _func, _data)
- do {
- INIT_LIST_HEAD(&(_work)->entry);
- (_work)->pending = 0;
- PREPARE_WORK((_work), (_func), (_data));
- init_timer(&(_work)->timer);
- } while (0)
- extern struct workqueue_struct *__create_workqueue(const char *name,
- int singlethread);
- #define create_workqueue(name) __create_workqueue((name), 0)
- #define create_singlethread_workqueue(name) __create_workqueue((name), 1)
- extern void destroy_workqueue(struct workqueue_struct *wq);
- extern int FASTCALL(queue_work(struct workqueue_struct *wq, struct work_struct *work));
- extern int FASTCALL(queue_delayed_work(struct workqueue_struct *wq, struct work_struct *work, unsigned long delay));
- extern void FASTCALL(flush_workqueue(struct workqueue_struct *wq));
- extern int FASTCALL(schedule_work(struct work_struct *work));
- extern int FASTCALL(schedule_delayed_work(struct work_struct *work, unsigned long delay));
- extern int schedule_delayed_work_on(int cpu, struct work_struct *work, unsigned long delay);
- extern void flush_scheduled_work(void);
- extern int current_is_keventd(void);
- extern int keventd_up(void);
- extern void init_workqueues(void);
- void cancel_rearming_delayed_work(struct work_struct *work);
- void cancel_rearming_delayed_workqueue(struct workqueue_struct *,
- struct work_struct *);
- /*
- * Kill off a pending schedule_delayed_work(). Note that the work callback
- * function may still be running on return from cancel_delayed_work(). Run
- * flush_scheduled_work() to wait on it.
- */
- static inline int cancel_delayed_work(struct work_struct *work)
- {
- int ret;
- ret = del_timer_sync(&work->timer);
- if (ret)
- clear_bit(0, &work->pending);
- return ret;
- }
- #endif