[BACK]Return to timestamp.h CVS log [TXT][DIR] Up to [local] / src / usr.bin / make
File: [local] / src / usr.bin / make / timestamp.h (download)

Revision 1.10, Wed May 22 12:14:08 2013 UTC (11 years ago) by espie
Branch: MAIN
CVS Tags: OPENBSD_7_3_BASE, OPENBSD_7_3, OPENBSD_7_2_BASE, OPENBSD_7_2, OPENBSD_7_1_BASE, OPENBSD_7_1, OPENBSD_7_0_BASE, OPENBSD_7_0, OPENBSD_6_9_BASE, OPENBSD_6_9, OPENBSD_6_8_BASE, OPENBSD_6_8, OPENBSD_6_7_BASE, OPENBSD_6_7, OPENBSD_6_6_BASE, OPENBSD_6_6, OPENBSD_6_5_BASE, OPENBSD_6_5, OPENBSD_6_4_BASE, OPENBSD_6_4, OPENBSD_6_3_BASE, OPENBSD_6_3, OPENBSD_6_2_BASE, OPENBSD_6_2, OPENBSD_6_1_BASE, OPENBSD_6_1, OPENBSD_6_0_BASE, OPENBSD_6_0, OPENBSD_5_9_BASE, OPENBSD_5_9, OPENBSD_5_8_BASE, OPENBSD_5_8, OPENBSD_5_7_BASE, OPENBSD_5_7, OPENBSD_5_6_BASE, OPENBSD_5_6, OPENBSD_5_5_BASE, OPENBSD_5_5, OPENBSD_5_4_BASE, OPENBSD_5_4
Changes since 1.9: +5 -9 lines 

as checked through thorough tests, youngest->mtime == ctime, so ditch
the extra field.

remove some extra abstraction layer: use clock_gettime directly
instead of ts_set_from_now (what is "now" anyways)

time_to_string takes param by pointer

rename "now" into starttime (more accurate term)

randomize queue uses arc4random_uniform (prompted by deraadt@)

display debug timestamp with ns too (it's debug, so it doesn't really
matter whichever way it's done, as long as it's done)

okay millert@

#ifndef TIMESTAMP_H
#define TIMESTAMP_H

/*	$OpenBSD: timestamp.h,v 1.10 2013/05/22 12:14:08 espie Exp $ */

/*
 * Copyright (c) 2001 Marc Espie.
 *
 * 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 OPENBSD PROJECT 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 OPENBSD
 * PROJECT 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.
 */

/* This module handles time stamps on files in a relatively high-level way.
 * Most of the interface is achieved through inlineable code.
 *
 * ts_set_out_of_date(t):	set up t so that it is out-of-date.
 * b = is_out_of_date(t):	check whether t is out-of-date.
 * ts_set_from_stat(s, t):	grab date out of stat(2) buffer.
 * b = is_strictly_before(t1, t2):
 *				check whether t1 is before t2.
 * ts_set_from_time_t(d, t):	create timestamp from time_t.
 */

/* sysresult = set_times(name):	set modification times on a file.
 * 				system call results.
 */

#define Init_Timestamp()	clock_gettime(CLOCK_REALTIME, &starttime)

#define TMIN (sizeof(time_t) == sizeof(int32_t) ? INT32_MIN : INT64_MIN)
#define ts_set_out_of_date(t)	(t).tv_sec = TMIN, (t).tv_nsec = 0
#define is_out_of_date(t)	((t).tv_sec == TMIN && (t).tv_nsec == 0)

#define ts_set_from_stat(s, t) \
do { \
	(t).tv_sec = (s).st_mtime; \
	(t).tv_nsec = (s).st_mtimensec; \
	if (is_out_of_date(t)) \
		(t).tv_nsec++; \
} while (0)
#define is_strictly_before(t1, t2)	timespeccmp(&(t1), &(t2), <)
#define ts_set_from_time_t(d, t) \
do { \
	(t).tv_sec = d; \
	(t).tv_nsec = 0; \
	if (is_out_of_date(t)) \
		(t).tv_nsec++; \
} while (0)

extern int set_times(const char *);

extern struct timespec starttime;	/* The time at the start 
					 * of this whole process */
extern char *time_to_string(struct timespec *);


#endif