ref: 216c1ae66ef6967d1a470a431418241c001c708b
dir: /QW/server/sys_unix.c/
/* 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 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #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; /* =============================================================================== 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 ============= */ void main(int argc, char *argv[]) { 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); } }