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authorBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:23 -0800
committerBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:23 -0800
commit5ca6e8e6a4e5c022a6fb5d28f30219c22c99eda8 (patch)
tree9b744b9dbf39e716e56daa620e2f3041968caf19 /time.c
downloadscm-5ca6e8e6a4e5c022a6fb5d28f30219c22c99eda8.tar.gz
scm-5ca6e8e6a4e5c022a6fb5d28f30219c22c99eda8.zip
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+/* Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; see the file COPYING. If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * As a special exception, the Free Software Foundation gives permission
+ * for additional uses of the text contained in its release of GUILE.
+ *
+ * The exception is that, if you link the GUILE library with other files
+ * to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the GUILE library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by the
+ * Free Software Foundation under the name GUILE. If you copy
+ * code from other Free Software Foundation releases into a copy of
+ * GUILE, as the General Public License permits, the exception does
+ * not apply to the code that you add in this way. To avoid misleading
+ * anyone as to the status of such modified files, you must delete
+ * this exception notice from them.
+ *
+ * If you write modifications of your own for GUILE, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice.
+ */
+
+/* "time.c" functions dealing with time.
+ Author: Aubrey Jaffer */
+
+#include "scm.h"
+
+#ifdef HAVE_CONFIG_H
+
+# ifndef HAVE_FTIME
+# define LACK_FTIME
+# endif
+# ifndef HAVE_TIMES
+# define LACK_TIMES
+# endif
+# ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+# endif
+# ifdef TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+# else
+# ifdef HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# ifdef HAVE_TIME_H
+# include <time.h>
+# endif
+# endif
+# endif
+# ifdef HAVE_SYS_TIMES_H
+# include <sys/times.h>
+# else
+# ifdef HAVE_SYS_TIMEB_H
+# include <sys/timeb.h>
+# endif
+# endif
+# ifdef HAVE_FTIME
+# ifdef unix
+# ifndef GO32
+# include <sys/timeb.h>
+# endif
+# endif
+# endif
+
+#else
+
+# ifdef STDC_HEADERS
+# include <time.h>
+# ifdef M_SYSV
+# include <sys/types.h>
+# include <sys/times.h>
+# endif
+# ifdef sun
+# include <sys/types.h>
+# include <sys/times.h>
+# endif
+# ifdef ultrix
+# include <sys/types.h>
+# include <sys/times.h>
+# endif
+# ifdef nosve
+# include <sys/types.h>
+# include <sys/times.h>
+# endif
+# ifdef _UNICOS
+# include <sys/types.h>
+# include <sys/times.h>
+# endif
+# ifdef __IBMC__
+# include <sys/timeb.h>
+# endif
+# else
+# ifdef SVR2
+# include <time.h>
+# else
+# ifndef ARM_ULIB
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
+# endif
+# include <sys/types.h>
+
+# ifndef ARM_ULIB
+# include <sys/times.h>
+# else
+# include <time.h>
+# endif
+
+# endif
+
+/* Define this if your system lacks ftime(). */
+/* #define LACK_FTIME */
+/* Define this if your system lacks times(). */
+/* #define LACK_TIMES */
+
+# ifdef __TURBOC__
+# define LACK_TIMES
+# endif
+# if (__TURBOC__==1) /* Needed for TURBOC V1.0 */
+# define LACK_FTIME
+# undef MSDOS
+# endif
+# ifdef __HIGHC__
+# define LACK_TIMES
+# endif
+# ifdef THINK_C
+# define LACK_FTIME
+# define LACK_TIMES
+# define CLK_TCK 60
+# endif
+# ifdef SVR2
+# define LACK_FTIME
+# endif
+# ifdef SVR4
+# define LACK_FTIME
+# endif
+# ifdef __svr4__
+# define LACK_FTIME
+# endif
+# ifdef nosve
+# define LACK_FTIME
+# endif
+# ifdef GO32
+# define LACK_FTIME
+# define LACK_TIMES
+# endif
+# ifdef atarist
+# define LACK_FTIME
+# define LACK_TIMES
+# endif
+# ifdef ARM_ULIB
+# define LACK_FTIME
+# define LACK_TIMES
+# endif
+# ifdef _DCC
+# define LACK_FTIME
+# endif
+# ifdef MSDOS
+# ifndef GO32
+# include <sys/types.h>
+# include <sys/timeb.h>
+# endif
+# endif
+# ifdef _UNICOS
+# define LACK_FTIME
+# endif
+
+# ifndef LACK_FTIME
+# ifdef unix
+# ifndef GO32
+# include <sys/timeb.h>
+# endif
+# endif
+# endif
+
+# ifdef __EMX__
+# define LACK_TIMES
+# include <sys/types.h>
+# include <sys/timeb.h>
+# endif
+
+# ifdef MWC
+# include <time.h>
+# include <sys/timeb.h>
+# endif
+
+# ifdef ARM_ULIB
+# include <sys/types.h>
+# include <time.h>
+# endif
+
+#endif /* HAVE_CONFIG_H */
+
+#ifdef vms
+# define LACK_TIMES
+# define LACK_FTIME
+#endif
+
+#ifdef CLK_TCK
+# define CLKTCK CLK_TCK
+# ifdef CLOCKS_PER_SEC
+# ifdef unix
+# ifndef ARM_ULIB
+# include <sys/times.h>
+# endif
+# define LACK_CLOCK
+ /* This is because clock() might be POSIX rather than ANSI.
+ This occurs on HP-UX machines */
+# endif
+# endif
+#else
+# ifdef CLOCKS_PER_SEC
+# define CLKTCK CLOCKS_PER_SEC
+# else
+# define LACK_CLOCK
+# ifdef AMIGA
+# include <stddef.h>
+# define LACK_TIMES
+# define LACK_FTIME
+# define CLKTCK 1000
+# else
+# define CLKTCK 60
+# endif
+# endif
+#endif
+
+#ifdef __STDC__
+# define timet time_t
+#else
+# define timet long
+#endif
+
+#ifdef LACK_TIMES
+# ifdef LACK_CLOCK
+# ifdef AMIGA
+/* From: "Fred Bayer" <bayerf@lan.informatik.tu-muenchen.de> */
+# ifdef AZTEC_C /* AZTEC_C */
+# include <devices/timer.h>
+static long mytime()
+{
+ long sec, mic, mili = 0;
+ struct timerequest *timermsg;
+ struct MsgPort *timerport;
+ if(!(timerport = (struct MsgPort *)CreatePort(0, 0))){
+ lputs("No mem for port.\n", cur_errp);
+ return mili;
+ }
+ if(!(timermsg = (struct timerequest *)
+ CreateExtIO(timerport, sizeof(struct timerequest)))){
+ lputs("No mem for timerequest.\n", cur_errp);
+ DeletePort(timermsg->tr_node.io_Message.mn_ReplyPort);
+ return mili;
+ }
+ if(!(OpenDevice(TIMERNAME, UNIT_MICROHZ, timermsg, 0))){
+ timermsg->tr_node.io_Command = TR_GETSYSTIME;
+ timermsg->tr_node.io_Flags = 0;
+ DoIO(timermsg);
+ sec = timermsg->tr_time.tv_secs;
+ mic = timermsg->tr_time.tv_micro;
+ mili = sec*1000+mic/1000;
+ CloseDevice(timermsg);
+ }
+ else lputs("No Timer available.\n", cur_errp);
+ DeletePort(timermsg->tr_node.io_Message.mn_ReplyPort);
+ DeleteExtIO(timermsg);
+ return mili ;
+}
+# else /* this is for SAS/C */
+static long mytime()
+{
+ unsigned int cl[2];
+ timer(cl);
+ return(cl[0]*1000+cl[1]/1000);
+}
+# endif /* AZTEC_C */
+# else /* AMIGA */
+# define mytime() ((time((timet*)0) - your_base) * CLKTCK)
+# endif /* AMIGA */
+# else /* LACK_CLOCK */
+# define mytime clock
+# endif /* LACK_CLOCK */
+#else /* LACK_TIMES */
+static long mytime()
+{
+ struct tms time_buffer;
+ times(&time_buffer);
+ return time_buffer.tms_utime + time_buffer.tms_stime;
+}
+#endif /* LACK_TIMES */
+
+#ifdef LACK_FTIME
+# ifdef AMIGA
+SCM your_time()
+{
+ return MAKINUM(mytime());
+}
+# else
+timet your_base = 0;
+SCM your_time()
+{
+ return MAKINUM((time((timet*)0) - your_base) * (int)CLKTCK);
+}
+# endif /* AMIGA */
+#else /* LACK_FTIME */
+struct timeb your_base = {0};
+SCM your_time()
+{
+ struct timeb time_buffer;
+ long tmp;
+ ftime(&time_buffer);
+ time_buffer.time -= your_base.time;
+ tmp = time_buffer.millitm - your_base.millitm;
+ tmp = time_buffer.time*1000L + tmp;
+ tmp *= CLKTCK;
+ tmp /= 1000;
+ return MAKINUM(tmp);
+}
+#endif /* LACK_FTIME */
+
+long my_base = 0;
+SCM my_time()
+{
+ return MAKINUM(mytime()-my_base);
+}
+
+SCM curtime()
+{
+ timet timv = time((timet*)0);
+ SCM ans;
+#ifndef _DCC
+# ifdef STDC_HEADERS
+# if (__TURBOC__ > 0x201)
+ timv = mktime(gmtime(&timv));
+# endif
+# endif
+#endif
+ ans = ulong2num(timv);
+ return BOOL_F==ans ? MAKINUM(timv) : ans;
+}
+
+long time_in_msec(x)
+ long x;
+{
+ if (CLKTCK==60) return (x*50)/3;
+ else
+ return (CLKTCK < 1000 ? x*(1000L/(long)CLKTCK) : (x*1000L)/(long)CLKTCK);
+}
+
+static iproc subr0s[] = {
+ {"get-internal-run-time", my_time},
+ {"get-internal-real-time", your_time},
+ {"current-time", curtime},
+ {0, 0}};
+
+void init_time()
+{
+ sysintern("internal-time-units-per-second",
+ MAKINUM((long)CLKTCK));
+#ifdef LACK_FTIME
+# ifndef AMIGA
+ if (!your_base) time(&your_base);
+# endif
+#else
+ if (!your_base.time) ftime(&your_base);
+#endif
+ if (!my_base) my_base = mytime();
+ init_iprocs(subr0s, tc7_subr_0);
+}