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-rw-r--r--libguile/stime.c236
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diff --git a/libguile/stime.c b/libguile/stime.c
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+/* Copyright (C) 1995,1996 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.
+ */
+
+
+#include <stdio.h>
+#include "_scm.h"
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#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 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
+# define CLKTCK 60
+# endif
+#endif
+
+
+# ifdef HAVE_FTIME
+# include <sys/timeb.h>
+# endif
+
+
+#ifdef __STDC__
+# define timet time_t
+#else
+# define timet long
+#endif
+
+#ifdef HAVE_TIMES
+#ifdef __STDC__
+static
+long mytime(void)
+#else
+static
+long mytime()
+#endif
+{
+ struct tms time_buffer;
+ times(&time_buffer);
+ return time_buffer.tms_utime + time_buffer.tms_stime;
+}
+#else
+# ifdef LACK_CLOCK
+# define mytime() ((time((timet*)0) - scm_your_base) * CLKTCK)
+# else
+# define mytime clock
+# endif
+#endif
+
+
+
+#ifdef HAVE_FTIME
+
+struct timeb scm_your_base = {0};
+SCM_PROC(s_get_internal_real_time, "get-internal-real-time", 0, 0, 0, scm_get_internal_real_time);
+#ifdef __STDC__
+SCM
+scm_get_internal_real_time(void)
+#else
+SCM
+scm_get_internal_real_time()
+#endif
+{
+ struct timeb time_buffer;
+ long tmp;
+ ftime(&time_buffer);
+ time_buffer.time -= scm_your_base.time;
+ tmp = time_buffer.millitm - scm_your_base.millitm;
+ tmp = time_buffer.time*1000L + tmp;
+ tmp *= CLKTCK;
+ tmp /= 1000;
+ return SCM_MAKINUM(tmp);
+}
+
+#else
+
+timet scm_your_base = 0;
+SCM_PROC(s_get_internal_real_time, "get-internal-real-time", 0, 0, 0, scm_get_internal_real_time);
+#ifdef __STDC__
+SCM
+scm_get_internal_real_time(void)
+#else
+SCM
+scm_get_internal_real_time()
+#endif
+{
+ return SCM_MAKINUM((time((timet*)0) - scm_your_base) * (int)CLKTCK);
+}
+#endif
+
+
+
+static long scm_my_base = 0;
+
+SCM_PROC(s_get_internal_run_time, "get-internal-run-time", 0, 0, 0, scm_get_internal_run_time);
+#ifdef __STDC__
+SCM
+scm_get_internal_run_time(void)
+#else
+SCM
+scm_get_internal_run_time()
+#endif
+{
+ return SCM_MAKINUM(mytime()-scm_my_base);
+}
+
+SCM_PROC(s_current_time, "current-time", 0, 0, 0, scm_current_time);
+#ifdef __STDC__
+SCM
+scm_current_time(void)
+#else
+SCM
+scm_current_time()
+#endif
+{
+ timet timv = time((timet*)0);
+ SCM ans;
+ ans = scm_ulong2num(timv);
+ return SCM_BOOL_F==ans ? SCM_MAKINUM(timv) : ans;
+}
+
+#ifdef __STDC__
+long
+scm_time_in_msec(long x)
+#else
+long
+scm_time_in_msec(x)
+ long x;
+#endif
+{
+ if (CLKTCK==60) return (x*50)/3;
+ else
+ return (CLKTCK < 1000 ? x*(1000L/(long)CLKTCK) : (x*1000L)/(long)CLKTCK);
+}
+
+#ifdef __STDC__
+void
+scm_init_stime(void)
+#else
+void
+scm_init_stime()
+#endif
+{
+ scm_sysintern("internal-time-units-per-second",
+ SCM_MAKINUM((long)CLKTCK));
+
+#ifdef HAVE_FTIME
+ if (!scm_your_base.time) ftime(&scm_your_base);
+#else
+ if (!scm_your_base) time(&scm_your_base);
+#endif
+
+ if (!scm_my_base) scm_my_base = mytime();
+
+#include "stime.x"
+}
+