/*-
 * Copyright (c) 2013-2014 Devin Teske <dteske@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#ifndef _DPV_UTIL_H_
#define _DPV_UTIL_H_

/* Limits */
#define BUFSIZE_MAX		(2 * 1024 * 1024)
					/* Buffer size for read(2) input */
#ifndef MAXPHYS
#define MAXPHYS			(128 * 1024)
					/* max raw I/O transfer size */
#endif

/*
 * Memory strategry threshold, in pages: if physmem is larger than this,
 * use a large buffer.
 */
#define PHYSPAGES_THRESHOLD	(32 * 1024)

/*
 * Small (default) buffer size in bytes. It's inefficient for this to be
 * smaller than MAXPHYS.
 */
#define BUFSIZE_SMALL		(MAXPHYS)

/*
 * Math macros
 */
#undef  MIN
#define MIN(x,y) ((x) < (y) ? (x) : (y))
#undef  MAX
#define MAX(x,y) ((x) > (y) ? (x) : (y))

/*
 * Extra display information
 */
#define BYTE_STATUS_SOLO	"%'10lli bytes read @ %'9.1f bytes/sec."
#define BYTE_STATUS_MANY	(BYTE_STATUS_SOLO " [%i/%i busy/wait]")
#define LINE_STATUS_SOLO	"%'10lli lines read @ %'9.1f lines/sec."
#define LINE_STATUS_MANY	(LINE_STATUS_SOLO " [%i/%i busy/wait]")

#endif /* !_DPV_UTIL_H_ */