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File: [local] / src / usr.bin / make / timestamp.h (download)
Revision 1.1, Wed May 23 12:34:51 2001 UTC (23 years ago) by espie
Mostly clean-up: - cut up those huge include files into separate interfaces for all modules. Put the interface documentation there, and not with the implementation. - light-weight includes for needed concrete types (lst_t.h, timestamp_t.h). - cut out some more logically separate parts: cmd_exec, varname, parsevar, timestamp. - put all error handling functions together, so that we will be able to clean them up. - more systematic naming: functioni to handle interval, function to handle string. - put the init/end code apart to minimize coupling. - kill weird types like ReturnStatus and Boolean. Use standard bool (with a fallback for non-iso systems) - better interface documentation for lots of subsystems. As a result, make compilation goes somewhat faster (5%, even considering the largish BSD copyrights to read). The corresponding preprocessed source goes down from 1,5M to 1M. A few minor code changes as well: Parse_DoVar is no longer destructive. Parse_IsVar functionality is folded into Parse_DoVar (as it knows what an assignment is), a few more interval handling functions. Avoid calling XXX_End when they do nothing, just #define XXX_End to nothing. Parse_DoVar is slightly more general: it will handle compound assignments as long as they make sense, e.g., VAR +!= cmd will work. As a side effect, VAR++=value now triggers an error (two + in assignment). - this stuff doesn't occur in portable Makefiles. - writing VAR++ = value or VAR+ +=value disambiguates it. - this is a good thing, it uncovered a bug in bsd.port.mk. Tested by naddy@. Okayed millert@. I'll handle the fallback if there is any. This went through a full make build anyways, including isakmpd (without mickey's custom binutils, as he didn't see fit to share it with me). |
#ifndef TIMESTAMP_H #define TIMESTAMP_H /* $OpenPackages$ */ /* $OpenBSD: timestamp.h,v 1.1 2001/05/23 12:34:51 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. * * TIMESTAMP: opaque data type to store a date. * 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. * stamp = timestamp2time_t(t): extract time_t from timestamp. * ts_set_from_time_t(d, t): create timestamp from time_t. * ts_set_from_now(n): grab current date. */ /* sysresult = set_times(name): set modification times on a file. * system call results. */ #define Init_Timestamp() ts_set_from_now(now) #ifndef TIMESTAMP_TYPE #include "timestamp_t.h" #endif #ifdef USE_TIMESPEC #define ts_set_out_of_date(t) (t).tv_sec = INT_MIN, (t).tv_nsec = 0 #define is_out_of_date(t) ((t).tv_sec == INT_MIN && (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) #define ts_set_from_now(n) \ do { \ struct timeval tv; \ gettimeofday(&tv, NULL); \ TIMEVAL_TO_TIMESPEC(&(tv), &n); \ } while (0) #define timestamp2time_t(t) ((t).tv_sec) #else #define is_out_of_date(t) ((t) == INT_MIN) #define ts_set_out_of_date(t) (t) = INT_MIN #define ts_set_from_stat(s, t) \ do { \ (t) = (s).st_mtime; \ if (is_out_of_date(t)) \ (t)++; \ } while (0) #define is_strictly_before(t1, t2) ((t1) < (t2)) #define ts_set_from_time_t(d, t) \ do { \ (t) = d; \ if (is_out_of_date(t)) \ (t)++; \ } while (0) #define ts_set_from_now(n) time(&(n)) #define timestamp2time_t(t) (t) #endif extern int set_times(const char *); extern TIMESTAMP now; /* The time at the start of this whole * process */ #endif