[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;
};

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
	45	struct workqueue {
	46	unsigned int max_workers;
	47
	48	struct thread_data *td;
	49	struct workqueue_ops ops;
	50
	51	uint64_t work_seq;
	52	struct submit_worker *workers;
	53	unsigned int next_free_worker;
	54
	55	pthread_cond_t flush_cond;
	56	pthread_mutex_t flush_lock;
	57	pthread_mutex_t stat_lock;
	58	volatile int wake_idle;
	59	};
	60
	61	int workqueue_init(struct thread_data td, struct workqueue wq, struct workqueue_ops *ops, unsigned int max_workers);
	62	void workqueue_exit(struct workqueue *wq);
	63
	64	bool workqueue_enqueue(struct workqueue wq, struct workqueue_work work);
	65	void workqueue_flush(struct workqueue *wq);
	66
	67	static inline bool workqueue_pre_sleep_check(struct submit_worker *sw)
	68	{
	69	struct workqueue *wq = sw->wq;
	70
	71	if (!wq->ops.pre_sleep_flush_fn)
	72	return false;
	73
	74	return wq->ops.pre_sleep_flush_fn(sw);
	75	}
	76
	77	static inline void workqueue_pre_sleep(struct submit_worker *sw)
	78	{
	79	struct workqueue *wq = sw->wq;
	80
	81	if (wq->ops.pre_sleep_fn)
	82	wq->ops.pre_sleep_fn(sw);
	83	}
	84
	85	static inline int workqueue_init_worker(struct submit_worker *sw)
	86	{
	87	struct workqueue *wq = sw->wq;
	88
	89	if (!wq->ops.init_worker_fn)
	90	return 0;
	91
	92	return wq->ops.init_worker_fn(sw);
	93	}
	94
	95	static inline void workqueue_exit_worker(struct submit_worker *sw,
	96	unsigned int *sum_cnt)
	97	{
	98	struct workqueue *wq = sw->wq;
	99	unsigned int tmp = 1;
	100
	101	if (!wq->ops.exit_worker_fn)
	102	return;
	103
	104	if (!sum_cnt)
	105	sum_cnt = &tmp;
	106
	107	wq->ops.exit_worker_fn(sw, sum_cnt);
	108	}
	109	#endif