198 lines
3.8 KiB
C
198 lines
3.8 KiB
C
/*
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sys_unix.c
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(description)
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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static const char rcsid[] =
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"$Id$";
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include "QF/console.h"
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#include "QF/cvar.h"
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#include "QF/qargs.h"
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#include "QF/sys.h"
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#include "client.h"
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#include "host.h"
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#include "server.h"
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qboolean isDedicated = false;
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void
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Sys_Init (void)
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{
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#ifdef USE_INTEL_ASM
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Sys_SetFPCW ();
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#endif
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}
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static void
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shutdown (void)
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{
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// change stdin to blocking
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~O_NONBLOCK);
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}
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void
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Sys_DebugLog (const char *file, const char *fmt, ...)
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{
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va_list argptr;
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static char data[1024];
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int fd;
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va_start (argptr, fmt);
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vsnprintf (data, sizeof (data), fmt, argptr);
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va_end (argptr);
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fd = open (file, O_WRONLY | O_CREAT | O_APPEND, 0666);
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write (fd, data, strlen (data));
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close (fd);
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}
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void
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floating_point_exception_handler (int whatever)
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{
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// Sys_Warn("floating point exception\n");
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signal (SIGFPE, floating_point_exception_handler);
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}
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/*
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Sys_ConsoleInput
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Checks for a complete line of text typed in at the console, then forwards
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it to the host command processor
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*/
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const char *
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Sys_ConsoleInput (void)
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{
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static char text[256];
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int len;
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fd_set fdset;
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struct timeval timeout;
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if (cls.state == ca_dedicated) {
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FD_ZERO (&fdset);
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FD_SET (0, &fdset); // stdin
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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if (select (1, &fdset, NULL, NULL, &timeout) == -1
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|| !FD_ISSET (0, &fdset)) return NULL;
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len = read (0, text, sizeof (text));
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if (len < 1)
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return NULL;
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text[len - 1] = 0; // rip off the \n and terminate
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return text;
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}
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return NULL;
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}
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#ifndef USE_INTEL_ASM
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void
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Sys_HighFPPrecision (void)
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{
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}
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void
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Sys_LowFPPrecision (void)
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{
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}
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#endif
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int
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main (int c, const char *v[])
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{
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double time, oldtime, newtime;
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signal (SIGFPE, SIG_IGN);
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memset (&host_parms, 0, sizeof (host_parms));
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COM_InitArgv (c, v);
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host_parms.argc = com_argc;
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host_parms.argv = com_argv;
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isDedicated = (COM_CheckParm ("-dedicated") != 0);
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) | O_NONBLOCK);
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Sys_RegisterShutdown (Host_Shutdown);
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Sys_RegisterShutdown (shutdown);
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Host_Init ();
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if (!sys_nostdout->int_val) {
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) | O_NONBLOCK);
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Con_Printf ("Quake -- Version %s\n", NQ_VERSION);
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}
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oldtime = Sys_DoubleTime () - 0.1;
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while (1) {
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// find time spent rendering last frame
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newtime = Sys_DoubleTime ();
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time = newtime - oldtime;
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if (cls.state == ca_dedicated) { // play vcrfiles at max speed
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if (time < sys_ticrate->value && (!vcrFile || recording)) {
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usleep (1);
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continue; // not time to run a server only tic yet
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}
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time = sys_ticrate->value;
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}
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if (time > sys_ticrate->value * 2)
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oldtime = newtime;
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else
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oldtime += time;
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Host_Frame (time);
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}
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}
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