--- /dev/null
+/*
+ * FILE: sysdeps.c
+ *
+ * System-dependent functions for GNU Shogi.
+ *
+ * ----------------------------------------------------------------------
+ * Copyright (c) 1993, 1994, 1995 Matthias Mutz
+ * Copyright (c) 1999 Michael Vanier and the Free Software Foundation
+ *
+ * GNU SHOGI is based on GNU CHESS
+ *
+ * Copyright (c) 1988, 1989, 1990 John Stanback
+ * Copyright (c) 1992 Free Software Foundation
+ *
+ * This file is part of GNU SHOGI.
+ *
+ * GNU Shogi 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 1, or (at your option) any
+ * later version.
+ *
+ * GNU Shogi 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 GNU Shogi; see the file COPYING. If not, write to the Free
+ * Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ * ----------------------------------------------------------------------
+ *
+ */
+
+#include "gnushogi.h"
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#if HAVE_SYS_FILIO_H
+/* Definition of FIONREAD */
+#include <sys/filio.h>
+#endif
+
+
+/* Forward declarations. */
+
+void ElapsedTime_NOFIONREAD(ElapsedTime_mode iop);
+void ElapsedTime_FIONREAD(ElapsedTime_mode iop);
+
+
+/*
+ * Determine the time that has passed since the search was started. If the
+ * elapsed time exceeds the target(ResponseTime + ExtraTime) then set timeout
+ * to true which will terminate the search.
+ * iop = COMPUTE_MODE calculate et, bump ETnodes
+ * iop = COMPUTE_AND_INIT_MODE calculate et, set timeout if time exceeded,
+ * set reference time
+ */
+
+/*
+ * ElapsedTime() is actually a wrapper function around the different
+ * versions of ElapsedTime_XXX(). This allows us to compile all the
+ * different ways of measuring time in one executable.
+ */
+
+void
+ElapsedTime(ElapsedTime_mode iop)
+{
+ switch (display_type)
+ {
+ case DISPLAY_RAW:
+ ElapsedTime_NOFIONREAD(iop);
+ break;
+
+ default:
+ ElapsedTime_FIONREAD(iop);
+ break;
+ }
+}
+
+
+
+#ifdef HAVE_GETTIMEOFDAY
+void
+ElapsedTime_FIONREAD(ElapsedTime_mode iop)
+{
+ long current_time;
+ int i;
+ int nchar;
+
+ struct timeval tv;
+ extern int errno;
+
+ if ((i = ioctl((int) 0, FIONREAD, &nchar)))
+ {
+ perror("FIONREAD");
+ fprintf(stderr,
+ "You probably have a non-ANSI <ioctl.h>; "
+ "see README. %d %d %x\n",
+ i, errno, FIONREAD);
+ exit(1);
+ }
+
+ if (nchar)
+ {
+ if (!flag.timeout)
+ flag.back = true;
+
+ flag.bothsides = false;
+ }
+
+ gettimeofday(&tv, NULL);
+ current_time = tv.tv_sec*100 + (tv.tv_usec/10000);
+
+# ifdef INTERRUPT_TEST
+ if (iop == INIT_INTERRUPT_MODE)
+ {
+ itime0 = current_time;
+ }
+ else if (iop == COMPUTE_INTERRUPT_MODE)
+ {
+ it = current_time - itime0;
+ }
+ else
+# endif
+ {
+ et = current_time - time0;
+ ETnodes = NodeCnt + znodes;
+
+ if (et < 0)
+ {
+# ifdef INTERRUPT_TEST
+ printf("elapsed time %ld not positive\n", et);
+# endif
+ et = 0;
+ }
+
+ if (iop == COMPUTE_AND_INIT_MODE)
+ {
+ if ((et > ResponseTime + ExtraTime) && (Sdepth > MINDEPTH))
+ flag.timeout = true;
+
+ time0 = current_time;
+ }
+
+ if (!NOT_CURSES)
+ {
+# ifdef QUIETBACKGROUND
+ if (!background)
+# endif /* QUIETBACKGROUND */
+ UpdateClocks();
+ }
+ }
+}
+
+
+void
+ElapsedTime_NOFIONREAD(ElapsedTime_mode iop)
+{
+ struct timeval tv;
+ long current_time;
+
+ gettimeofday(&tv, NULL);
+ current_time = tv.tv_sec*100 + (tv.tv_usec/10000);
+
+# ifdef INTERRUPT_TEST
+ if (iop == INIT_INTERRUPT_MODE)
+ {
+ itime0 = current_time;
+ }
+ else if (iop == COMPUTE_INTERRUPT_MODE)
+ {
+ it = current_time - itime0;
+ }
+ else
+# endif
+ {
+ et = current_time - time0;
+ ETnodes = NodeCnt + znodes;
+
+ if (et < 0)
+ {
+# ifdef INTERRUPT_TEST
+ printf("elapsed time %ld not positive\n", et);
+# endif
+ et = 0;
+ }
+
+ if (iop == COMPUTE_AND_INIT_MODE)
+ {
+ if ((et > ResponseTime + ExtraTime) && (Sdepth > MINDEPTH))
+ flag.timeout = true;
+
+ time0 = current_time;
+ }
+
+ if (!NOT_CURSES)
+ {
+# ifdef QUIETBACKGROUND
+ if (!background)
+# endif /* QUIETBACKGROUND */
+ UpdateClocks();
+ }
+ }
+}
+
+
+#else /* !HAVE_GETTIMEOFDAY */
+
+
+/*
+ * Determine the time that has passed since the search was started. If the
+ * elapsed time exceeds the target (ResponseTime + ExtraTime) then set
+ * timeout to true which will terminate the search.
+ *
+ * iop = 0 calculate et, bump ETnodes
+ * iop = 1 calculate et, set timeout if time exceeded, calculate et
+ *
+ */
+
+void
+ElapsedTime_FIONREAD(ElapsedTime_mode iop)
+{
+ long current_time;
+ int nchar;
+ int i;
+
+ extern int errno;
+
+
+ if ((i = ioctl((int) 0, FIONREAD, &nchar)))
+ {
+ perror("FIONREAD");
+ fprintf(stderr,
+ "You probably have a non-ANSI <ioctl.h>; "
+ "see README. %d %d %x\n",
+ i, errno, FIONREAD);
+ exit(1);
+ }
+
+ if (nchar)
+ {
+ if (!flag.timeout)
+ flag.back = true;
+ flag.bothsides = false;
+ }
+
+ et = ((current_time = time((long *) 0)) - time0) * 100;
+
+#ifdef INTERRUPT_TEST
+ if (iop == INIT_INTERRUPT_MODE)
+ {
+ itime0 = current_time;
+ }
+ else if (iop == COMPUTE_INTERRUPT_MODE)
+ {
+ it = current_time - itime0;
+ }
+ else
+#endif
+ {
+ ETnodes = NodeCnt + znodes;
+
+ if (et < 0)
+ {
+#ifdef INTERRUPT_TEST
+ printf("elapsed time %ld not positive\n", et);
+#endif
+ et = 0;
+ }
+
+ if (iop == COMPUTE_AND_INIT_MODE)
+ {
+ if ((et > (ResponseTime + ExtraTime)) && (Sdepth > MINDEPTH))
+ flag.timeout = true;
+
+ time0 = current_time;
+ }
+
+ if (!NOT_CURSES)
+ {
+#ifdef QUIETBACKGROUND
+ if (!background)
+#endif /* QUIETBACKGROUND */
+ UpdateClocks();
+ }
+ }
+}
+
+
+
+void
+ElapsedTime_NOFIONREAD(ElapsedTime_mode iop)
+{
+ long current_time;
+
+ et = ((current_time = time((long *) 0)) - time0) * 100;
+
+#ifdef INTERRUPT_TEST
+ if (iop == INIT_INTERRUPT_MODE)
+ {
+ itime0 = current_time;
+ }
+ else if (iop == COMPUTE_INTERRUPT_MODE)
+ {
+ it = current_time - itime0;
+ }
+ else
+#endif
+ {
+ ETnodes = NodeCnt + znodes;
+
+ if (et < 0)
+ {
+#ifdef INTERRUPT_TEST
+ printf("elapsed time %ld not positive\n", et);
+#endif
+ et = 0;
+ }
+
+ if (iop == COMPUTE_AND_INIT_MODE)
+ {
+ if ((et > (ResponseTime + ExtraTime)) && (Sdepth > MINDEPTH))
+ flag.timeout = true;
+
+ time0 = current_time;
+ }
+
+ if (!NOT_CURSES)
+ {
+#ifdef QUIETBACKGROUND
+ if (!background)
+#endif /* QUIETBACKGROUND */
+ UpdateClocks();
+ }
+ }
+}
+
+
+#endif /* HAVE_GETTIMEOFDAY */
+
+
+
+
+
projects / gnushogi.git / blobdiff