[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 *);

struct workqueue_ops {
	workqueue_work_fn *fn;
	workqueue_pre_sleep_flush_fn *pre_sleep_flush_fn;
	workqueue_pre_sleep_fn *pre_sleep_fn;
	workqueue_alloc_worker_fn *alloc_worker_fn;
	workqueue_free_worker_fn *free_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);
}

#endif
Commit	Line	Data
a9da8ab2 JA	1	#ifndef FIO_RATE_H
	2	#define FIO_RATE_H
	3
	4	#include "flist.h"
	5
88271841 JA	6	struct workqueue_work {
	7	struct flist_head list;
	8	};
	9
ee2b6d6e JA	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 *);
5bb79f69 JA	27
	28	struct workqueue_ops {
	29	workqueue_work_fn *fn;
	30	workqueue_pre_sleep_flush_fn *pre_sleep_flush_fn;
	31	workqueue_pre_sleep_fn *pre_sleep_fn;
ee2b6d6e JA	32	workqueue_alloc_worker_fn *alloc_worker_fn;
ee2b6d6e JA	33	workqueue_free_worker_fn *free_worker_fn;
5bb79f69	34	};
a9da8ab2 JA	35
	36	struct workqueue {
	37	unsigned int max_workers;
	38
	39	struct thread_data *td;
5bb79f69	40	struct workqueue_ops ops;
a9da8ab2 JA	41
	42	uint64_t work_seq;
	43	struct submit_worker *workers;
	44	unsigned int next_free_worker;
	45
	46	pthread_cond_t flush_cond;
	47	pthread_mutex_t flush_lock;
2a274336	48	pthread_mutex_t stat_lock;
a9da8ab2 JA	49	volatile int wake_idle;
	50	};
	51
5bb79f69	52	int workqueue_init(struct thread_data td, struct workqueue wq, struct workqueue_ops *ops, unsigned int max_workers);
a9da8ab2 JA	53	void workqueue_exit(struct workqueue *wq);
a9da8ab2 JA	54
88271841	55	bool workqueue_enqueue(struct workqueue wq, struct workqueue_work work);
a9da8ab2 JA	56	void workqueue_flush(struct workqueue *wq);
a9da8ab2 JA	57
ee2b6d6e	58	static inline bool workqueue_pre_sleep_check(struct submit_worker *sw)
5bb79f69	59	{
ee2b6d6e JA	60	struct workqueue *wq = sw->wq;
ee2b6d6e JA	61
5bb79f69 JA	62	if (!wq->ops.pre_sleep_flush_fn)
	63	return false;
	64
ee2b6d6e	65	return wq->ops.pre_sleep_flush_fn(sw);
5bb79f69 JA	66	}
5bb79f69 JA	67
ee2b6d6e	68	static inline void workqueue_pre_sleep(struct submit_worker *sw)
5bb79f69	69	{
ee2b6d6e JA	70	struct workqueue *wq = sw->wq;
ee2b6d6e JA	71
5bb79f69	72	if (wq->ops.pre_sleep_fn)
ee2b6d6e	73	wq->ops.pre_sleep_fn(sw);
5bb79f69 JA	74	}
5bb79f69 JA	75
a9da8ab2	76	#endif