[fio.git] / workqueue.h

#ifndef FIO_RATE_H
#define FIO_RATE_H

#include "flist.h"

struct workqueue_work {
	struct flist_head list;
};

struct submit_worker {
	pthread_t thread;
	pthread_mutex_t lock;
	pthread_cond_t cond;
	struct flist_head work_list;
	unsigned int flags;
	unsigned int index;
	uint64_t seq;
	struct workqueue *wq;
	void *private;
};

typedef void (workqueue_work_fn)(struct submit_worker *, struct workqueue_work *);
typedef bool (workqueue_pre_sleep_flush_fn)(struct submit_worker *);
typedef void (workqueue_pre_sleep_fn)(struct submit_worker *);
typedef int (workqueue_alloc_worker_fn)(struct submit_worker *);
typedef void (workqueue_free_worker_fn)(struct submit_worker *);
typedef int (workqueue_init_worker_fn)(struct submit_worker *);
typedef void (workqueue_exit_worker_fn)(struct submit_worker *, unsigned int *);
typedef void (workqueue_update_acct_fn)(struct submit_worker *);

struct workqueue_ops {
	workqueue_work_fn *fn;
	workqueue_pre_sleep_flush_fn *pre_sleep_flush_fn;
	workqueue_pre_sleep_fn *pre_sleep_fn;

	workqueue_update_acct_fn *update_acct_fn;

	workqueue_alloc_worker_fn *alloc_worker_fn;
	workqueue_free_worker_fn *free_worker_fn;

	workqueue_init_worker_fn *init_worker_fn;
	workqueue_exit_worker_fn *exit_worker_fn;

	unsigned int nice;
};

struct workqueue {
	unsigned int max_workers;

	struct thread_data *td;
	struct workqueue_ops ops;

	uint64_t work_seq;
	struct submit_worker *workers;
	unsigned int next_free_worker;

	pthread_cond_t flush_cond;
	pthread_mutex_t flush_lock;
	pthread_mutex_t stat_lock;
	volatile int wake_idle;
};

int workqueue_init(struct thread_data *td, struct workqueue *wq, struct workqueue_ops *ops, unsigned int max_workers);
void workqueue_exit(struct workqueue *wq);

bool workqueue_enqueue(struct workqueue *wq, struct workqueue_work *work);
void workqueue_flush(struct workqueue *wq);

static inline bool workqueue_pre_sleep_check(struct submit_worker *sw)
{
	struct workqueue *wq = sw->wq;

	if (!wq->ops.pre_sleep_flush_fn)
		return false;

	return wq->ops.pre_sleep_flush_fn(sw);
}

static inline void workqueue_pre_sleep(struct submit_worker *sw)
{
	struct workqueue *wq = sw->wq;

	if (wq->ops.pre_sleep_fn)
		wq->ops.pre_sleep_fn(sw);
}

static inline int workqueue_init_worker(struct submit_worker *sw)
{
	struct workqueue *wq = sw->wq;

	if (!wq->ops.init_worker_fn)
		return 0;

	return wq->ops.init_worker_fn(sw);
}

static inline void workqueue_exit_worker(struct submit_worker *sw,
					 unsigned int *sum_cnt)
{
	struct workqueue *wq = sw->wq;
	unsigned int tmp = 1;

	if (!wq->ops.exit_worker_fn)
		return;

	if (!sum_cnt)
		sum_cnt = &tmp;

	wq->ops.exit_worker_fn(sw, sum_cnt);
}
#endif
Commit	Line	Data
	1	#ifndef FIO_RATE_H
	2	#define FIO_RATE_H
	3
	4	#include "flist.h"
	5
	6	struct workqueue_work {
	7	struct flist_head list;
	8	};
	9
	10	struct submit_worker {
	11	pthread_t thread;
	12	pthread_mutex_t lock;
	13	pthread_cond_t cond;
	14	struct flist_head work_list;
	15	unsigned int flags;
	16	unsigned int index;
	17	uint64_t seq;
	18	struct workqueue *wq;
	19	void *private;
	20	};
	21
	22	typedef void (workqueue_work_fn)(struct submit_worker , struct workqueue_work );
	23	typedef bool (workqueue_pre_sleep_flush_fn)(struct submit_worker *);
	24	typedef void (workqueue_pre_sleep_fn)(struct submit_worker *);
	25	typedef int (workqueue_alloc_worker_fn)(struct submit_worker *);
	26	typedef void (workqueue_free_worker_fn)(struct submit_worker *);
	27	typedef int (workqueue_init_worker_fn)(struct submit_worker *);
	28	typedef void (workqueue_exit_worker_fn)(struct submit_worker , unsigned int );
	29	typedef void (workqueue_update_acct_fn)(struct submit_worker *);
	30
	31	struct workqueue_ops {
	32	workqueue_work_fn *fn;
	33	workqueue_pre_sleep_flush_fn *pre_sleep_flush_fn;
	34	workqueue_pre_sleep_fn *pre_sleep_fn;
	35
	36	workqueue_update_acct_fn *update_acct_fn;
	37
	38	workqueue_alloc_worker_fn *alloc_worker_fn;
	39	workqueue_free_worker_fn *free_worker_fn;
	40
	41	workqueue_init_worker_fn *init_worker_fn;
	42	workqueue_exit_worker_fn *exit_worker_fn;
	43
	44	unsigned int nice;
	45	};
	46
	47	struct workqueue {
	48	unsigned int max_workers;
	49
	50	struct thread_data *td;
	51	struct workqueue_ops ops;
	52
	53	uint64_t work_seq;
	54	struct submit_worker *workers;
	55	unsigned int next_free_worker;
	56
	57	pthread_cond_t flush_cond;
	58	pthread_mutex_t flush_lock;
	59	pthread_mutex_t stat_lock;
	60	volatile int wake_idle;
	61	};
	62
	63	int workqueue_init(struct thread_data td, struct workqueue wq, struct workqueue_ops *ops, unsigned int max_workers);
	64	void workqueue_exit(struct workqueue *wq);
	65
	66	bool workqueue_enqueue(struct workqueue wq, struct workqueue_work work);
	67	void workqueue_flush(struct workqueue *wq);
	68
	69	static inline bool workqueue_pre_sleep_check(struct submit_worker *sw)
	70	{
	71	struct workqueue *wq = sw->wq;
	72
	73	if (!wq->ops.pre_sleep_flush_fn)
	74	return false;
	75
	76	return wq->ops.pre_sleep_flush_fn(sw);
	77	}
	78
	79	static inline void workqueue_pre_sleep(struct submit_worker *sw)
	80	{
	81	struct workqueue *wq = sw->wq;
	82
	83	if (wq->ops.pre_sleep_fn)
	84	wq->ops.pre_sleep_fn(sw);
	85	}
	86
	87	static inline int workqueue_init_worker(struct submit_worker *sw)
	88	{
	89	struct workqueue *wq = sw->wq;
	90
	91	if (!wq->ops.init_worker_fn)
	92	return 0;
	93
	94	return wq->ops.init_worker_fn(sw);
	95	}
	96
	97	static inline void workqueue_exit_worker(struct submit_worker *sw,
	98	unsigned int *sum_cnt)
	99	{
	100	struct workqueue *wq = sw->wq;
	101	unsigned int tmp = 1;
	102
	103	if (!wq->ops.exit_worker_fn)
	104	return;
	105
	106	if (!sum_cnt)
	107	sum_cnt = &tmp;
	108
	109	wq->ops.exit_worker_fn(sw, sum_cnt);
	110	}
	111	#endif