newtree/source/sys_unix.c

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/*
sys_unix.c
(description)
Copyright (C) 1996-1997 Id Software, 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
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
$Id$
*/
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#include <sys/types.h>
#include "qwsvdef.h"
#ifdef NeXT
#include <libc.h>
#endif
#if defined(__linux__) || defined(sun)
#include <sys/stat.h>
#include <unistd.h>
#include <sys/time.h>
#include <errno.h>
#else
#include <sys/dir.h>
#endif
cvar_t sys_nostdout = {"sys_nostdout","0"};
cvar_t sys_extrasleep = {"sys_extrasleep","0"};
qboolean stdin_ready;
qboolean is_server = true;
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/*
===============================================================================
REQUIRED SYS FUNCTIONS
===============================================================================
*/
/*
============
Sys_FileTime
returns -1 if not present
============
*/
int Sys_FileTime (char *path)
{
struct stat buf;
if (stat (path,&buf) == -1)
return -1;
return buf.st_mtime;
}
/*
============
Sys_mkdir
============
*/
void Sys_mkdir (char *path)
{
if (mkdir (path, 0777) != -1)
return;
if (errno != EEXIST)
Sys_Error ("mkdir %s: %s",path, strerror(errno));
}
/*
================
Sys_DoubleTime
================
*/
double Sys_DoubleTime (void)
{
struct timeval tp;
struct timezone tzp;
static int secbase;
gettimeofday(&tp, &tzp);
if (!secbase)
{
secbase = tp.tv_sec;
return tp.tv_usec/1000000.0;
}
return (tp.tv_sec - secbase) + tp.tv_usec/1000000.0;
}
/*
================
Sys_Error
================
*/
void Sys_Error (char *error, ...)
{
va_list argptr;
char string[1024];
va_start (argptr,error);
vsprintf (string,error,argptr);
va_end (argptr);
printf ("Fatal error: %s\n",string);
exit (1);
}
/*
================
Sys_Printf
================
*/
void Sys_Printf (char *fmt, ...)
{
va_list argptr;
static char text[2048];
unsigned char *p;
va_start (argptr,fmt);
vsprintf (text,fmt,argptr);
va_end (argptr);
if (strlen(text) > sizeof(text))
Sys_Error("memory overwrite in Sys_Printf");
if (sys_nostdout.value)
return;
for (p = (unsigned char *)text; *p; p++) {
*p &= 0x7f;
if ((*p > 128 || *p < 32) && *p != 10 && *p != 13 && *p != 9)
printf("[%02x]", *p);
else
putc(*p, stdout);
}
fflush(stdout);
}
/*
================
Sys_Quit
================
*/
void Sys_Quit (void)
{
exit (0); // appkit isn't running
}
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
================
*/
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;
}
/*
=============
Sys_Init
Quake calls this so the system can register variables before host_hunklevel
is marked
=============
*/
void Sys_Init (void)
{
Cvar_RegisterVariable (&sys_nostdout);
Cvar_RegisterVariable (&sys_extrasleep);
}
/*
=============
main
=============
*/
int main(int argc, char *argv[])
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{
double time, oldtime, newtime;
quakeparms_t parms;
fd_set fdset;
extern int net_socket;
struct timeval timeout;
int j;
memset (&parms, 0, sizeof(parms));
COM_InitArgv (argc, argv);
parms.argc = com_argc;
parms.argv = com_argv;
parms.memsize = 16*1024*1024;
j = COM_CheckParm("-mem");
if (j)
parms.memsize = (int) (Q_atof(com_argv[j+1]) * 1024 * 1024);
if ((parms.membase = malloc (parms.memsize)) == NULL)
Sys_Error("Can't allocate %ld\n", parms.memsize);
parms.basedir = ".";
/*
if (Sys_FileTime ("id1/pak0.pak") != -1)
else
parms.basedir = "/raid/quake/v2";
*/
SV_Init (&parms);
// run one frame immediately for first heartbeat
SV_Frame (0.1);
//
// main loop
//
oldtime = Sys_DoubleTime () - 0.1;
while (1)
{
// 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 = 1;
timeout.tv_usec = 0;
if (select (net_socket+1, &fdset, NULL, NULL, &timeout) == -1)
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.value)
usleep (sys_extrasleep.value);
}
return 1;
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}