quakeforge/qw/source/sv_sys_unix.c

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/*
sv_sys_unix.c
(description)
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
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
of the License, 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 program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
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static const char rcsid[] =
"$Id$";
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/types.h>
#include "QF/cvar.h"
#include "QF/qargs.h"
#include "QF/sys.h"
#include "server.h"
#ifdef NeXT
# include <libc.h>
#endif
qboolean is_server = true;
qboolean stdin_ready;
server_static_t svs;
info_t **svs_info = &svs.info;
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#ifdef __alpha__
static inline unsigned long
rdfpcr(void)
{
unsigned long tmp, ret;
#if defined(__alpha_cix__) || defined(__alpha_fix__)
__asm__ __volatile__ (
"ftoit $f0,%0\n\t"
"mf_fpcr $f0\n\t"
"ftoit $f0,%1\n\t"
"itoft %0,$f0"
: "=r"(tmp), "=r"(ret));
#else
__asm__ __volatile__ (
"stt $f0,%0\n\t"
"mf_fpcr $f0\n\t"
"stt $f0,%1\n\t"
"ldt $f0,%0"
: "=m"(tmp), "=m"(ret));
#endif
return ret;
}
static inline void
wrfpcr(unsigned long val)
{
unsigned long tmp;
#if defined(__alpha_cix__) || defined(__alpha_fix__)
__asm__ __volatile__ (
"ftoit $f0,%0\n\t"
"itoft %1,$f0\n\t"
"mt_fpcr $f0\n\t"
"itoft %0,$f0"
: "=&r"(tmp) : "r"(val));
#else
__asm__ __volatile__ (
"stt $f0,%0\n\t"
"ldt $f0,%1\n\t"
"mt_fpcr $f0\n\t"
"ldt $f0,%0"
: "=m"(tmp) : "m"(val));
#endif
}
#endif
void
Sys_Init (void)
{
#ifdef USE_INTEL_ASM
Sys_SetFPCW ();
#endif
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#ifdef __alpha__
wrfpcr (rdfpcr () | 1L << 47);
#endif
}
static int do_stdin = 1;
/*
Sys_ConsoleInput
Checks for a complete line of text typed in at the console, then forwards
it to the host command processor
*/
const char *
Sys_ConsoleInput (void)
{
static char text[256];
int len;
if (!stdin_ready || !do_stdin)
return NULL; // the select didn't say it was ready
stdin_ready = false;
len = read (0, text, sizeof (text));
if (len == 0) {
// end of file
do_stdin = 0;
return NULL;
}
if (len < 1)
return NULL;
text[len - 1] = 0; // rip off the \n and terminate
return text;
}
int
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main (int argc, const char *argv[])
{
double time, oldtime, newtime;
fd_set fdset;
memset (&host_parms, 0, sizeof (host_parms));
COM_InitArgv (argc, argv);
host_parms.argc = com_argc;
host_parms.argv = com_argv;
SV_Init ();
Sys_RegisterShutdown (Net_LogStop);
// run one frame immediately for first heartbeat
SV_Frame (0.1);
// main loop
oldtime = Sys_DoubleTime () - 0.1;
while (1) {
struct timeval _timeout;
struct timeval *timeout = 0;
// select on the net socket and stdin
// the only reason we have a timeout at all is so that if the last
// connected client times out, the message would not otherwise
// be printed until the next event.
FD_ZERO (&fdset);
if (do_stdin)
FD_SET (0, &fdset);
FD_SET (net_socket, &fdset);
_timeout.tv_sec = 0;
_timeout.tv_usec = 10000;
if (svs.num_clients || !sys_dead_sleep->int_val)
timeout = &_timeout;
if (select (net_socket + 1, &fdset, NULL, NULL, timeout) == -1
&& errno != EINTR)
continue;
stdin_ready = FD_ISSET (0, &fdset);
// find time passed since last cycle
newtime = Sys_DoubleTime ();
time = newtime - oldtime;
oldtime = newtime;
SV_Frame (time);
// extrasleep is just a way to generate a fucked up connection on
// purpose
if (sys_extrasleep->int_val)
usleep (sys_extrasleep->int_val);
}
return 1;
}