/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef	_FB_FLOWOP_H
#define	_FB_FLOWOP_H


#pragma ident	"@(#)flowop.h	1.3	08/02/20 SMI"

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/resource.h>
#include <pthread.h>
#ifndef HAVE_SYSV_SEM
#include <semaphore.h>
#endif
#include "stats.h"
#include "threadflow.h"
#include "vars.h"
#include "fileset.h"
#include "filebench.h"

#ifdef	__cplusplus
extern "C" {
#endif

typedef struct flowop {
	char		fo_name[128];	/* Name */
	int		fo_instance;	/* Instance number */
	struct flowop	*fo_next;	/* Next in global list */
	struct flowop	*fo_threadnext;	/* Next in thread's list */
	struct flowop	*fo_resultnext;	/* List of flowops in result */
	struct threadflow *fo_thread;	/* Backpointer to thread */
	int		(*fo_func)();	/* Method */
	int		(*fo_init)();	/* Init Method */
	void		(*fo_destruct)(); /* Destructor Method */
	int		fo_type;	/* Type */
	int		fo_attrs;	/* Flow op attribute */
	fileset_t	*fo_fileset;	/* Fileset for op */
	int		fo_fd;		/* File descriptor */
	int		fo_fdnumber;	/* User specified file descriptor */
	int		fo_srcfdnumber;	/* User specified src file descriptor */
	var_integer_t	fo_iosize;	/* Size of operation */
	var_integer_t	fo_wss;		/* Flow op working set size */
	char		fo_targetname[128]; /* Target, for wakeup etc... */
	struct flowop	*fo_targets;	/* List of targets matching name */
	struct flowop	*fo_targetnext;	/* List of targets matching name */
	var_integer_t	fo_iters;	/* Number of iterations of op */
	var_integer_t	fo_value;	/* Attr */
	var_integer_t	fo_sequential;	/* Attr */
	var_integer_t	fo_random;	/* Attr */
	var_integer_t	fo_stride;	/* Attr */
	var_integer_t	fo_backwards;	/* Attr */
	var_integer_t	fo_dsync;	/* Attr */
	var_integer_t	fo_blocking;	/* Attr */
	var_integer_t	fo_directio;	/* Attr */
	var_integer_t	fo_rotatefd;	/* Attr */
	flowstat_t	fo_stats;	/* Flow statistics */
	pthread_cond_t	fo_cv;		/* Block/wakeup cv */
	pthread_mutex_t	fo_lock;	/* Mutex around flowop */
	char		*fo_buf;	/* Per-flowop buffer */
	uint64_t	fo_buf_size;	/* current size of buffer */
#ifdef HAVE_SYSV_SEM
	int		fo_semid_lw;	/* sem id */
	int		fo_semid_hw;	/* sem id for highwater block */
#else
	sem_t		fo_sem;		/* sem_t for posix semaphores */
#endif /* HAVE_SYSV_SEM */
	var_integer_t	fo_highwater;	/* value of highwater paramter */
	void		*fo_idp;	/* id, for sems etc */
	hrtime_t	fo_timestamp;	/* for ratecontrol, etc... */
	int		fo_initted;	/* Set to one if initialized */
	int64_t		fo_tputbucket;	/* Throughput bucket, for limiter */
	uint64_t	fo_tputlast;	/* Throughput count, for delta's */

} flowop_t;

/* Flow Op Attrs */
#define	FLOW_ATTR_SEQUENTIAL	0x1
#define	FLOW_ATTR_RANDOM	0x2
#define	FLOW_ATTR_STRIDE	0x4
#define	FLOW_ATTR_BACKWARDS	0x8
#define	FLOW_ATTR_DSYNC		0x10
#define	FLOW_ATTR_BLOCKING	0x20
#define	FLOW_ATTR_DIRECTIO	0x40
#define	FLOW_ATTR_READ		0x80
#define	FLOW_ATTR_WRITE		0x100

#define	FLOW_MASTER -1	    /* Declaration of thread from script */
#define	FLOW_DEFINITION 0   /* Prototype definition of flowop from library */

#define	FLOW_TYPES	5
#define	FLOW_TYPE_GLOBAL	0  /* Rolled up statistics */
#define	FLOW_TYPE_IO		1  /* Op is an I/O, reflected in iops and lat */
#define	FLOW_TYPE_AIO		2  /* Op is an async I/O, reflected in iops */
#define	FLOW_TYPE_SYNC		3  /* Op is a sync event */
#define	FLOW_TYPE_OTHER		4  /* Op is a something else */

extern flowstat_t controlstats;

void flowop_init(void);
flowop_t *flowop_define(threadflow_t *, char *name, flowop_t *inherit,
    int instance, int type);
flowop_t *flowop_find(char *name);
flowop_t *flowop_find_one(char *name, int instance);
void flowoplib_usage(void);
void flowoplib_init(void);
void flowop_delete_all(flowop_t **threadlist);
void flowop_endop(threadflow_t *threadflow, flowop_t *flowop, int64_t bytes);
void flowop_beginop(threadflow_t *threadflow, flowop_t *flowop);
void flowop_destruct_all_flows(threadflow_t *threadflow);

#ifdef	__cplusplus
}
#endif

#endif	/* _FB_FLOWOP_H */