/* 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 $Id$ */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "quakedef.h" qboolean isDedicated; int nostdout = 0; char *basedir = "."; char *cachedir = "/tmp"; cvar_t sys_linerefresh = {"sys_linerefresh","0"};// set for entity display cvar_t timestamps = {"timestamps", "0"}; // Set for timestamps cvar_t timeformat = {"timeformat", "[%b %e %X] "}; // Default timestamp format /* The translation table between the graphical font and plain ASCII --KB */ static char qfont_table[256] = { '\0', '#', '#', '#', '#', '.', '#', '#', '#', 9, 10, '#', ' ', 13, '.', '.', '[', ']', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', '<', '=', '>', ' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', '<', '<', '=', '>', '#', '#', '.', '#', '#', '#', '#', ' ', '#', ' ', '>', '.', '.', '[', ']', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', '<', '=', '>', ' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', '<' }; /* * File I/O */ /* Sys_FileTime Returns -1 if file not present */ int Sys_FileTime (char *path) { struct stat buf; if (stat (path, &buf) == -1) return -1; return buf.st_mtime; } /* Sys_mkdir Creates a directory */ void Sys_mkdir (char *path) { mkdir (path, 0777); } int Sys_FileOpenRead (char *path, int *handle) { struct stat fileinfo; int h; h = open (path, O_RDONLY, 0666); *handle = h; if (h == -1) return -1; if (fstat (h, &fileinfo) == -1) Sys_Error ("Error fstating %s", path); return fileinfo.st_size; } int Sys_FileOpenWrite (char *path) { int handle; umask (0); handle = open (path, O_RDWR | O_CREAT | O_TRUNC, 0666); if (handle == -1) Sys_Error ("Error opening %s: %s", path,strerror(errno)); return handle; } int Sys_FileWrite (int handle, void *src, int count) { return write (handle, src, count); } void Sys_FileClose (int handle) { close (handle); } void Sys_FileSeek (int handle, int position) { lseek (handle, position, SEEK_SET); } int Sys_FileRead (int handle, void *dest, int count) { return read (handle, dest, count); } void Sys_DebugLog(char *file, char *fmt, ...) { va_list argptr; static char data[1024]; int fd; va_start (argptr, fmt); vsprintf (data, fmt, argptr); va_end (argptr); fd = open(file, O_WRONLY | O_CREAT | O_APPEND, 0666); write (fd, data, strlen(data)); close (fd); } void Sys_EditFile (char *filename) { char cmd[256]; char *term; char *editor; term = getenv ("TERM"); if (term && !strcmp(term, "xterm")) { editor = getenv ("VISUAL"); if (!editor) editor = getenv ("EDITOR"); if (!editor) editor = getenv ("EDIT"); if (!editor) editor = "vi"; sprintf (cmd, "xterm -e %s %s", editor, filename); system (cmd); } } /* * System I/O */ void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length) { int r; unsigned long addr; int psize = getpagesize(); addr = (startaddr & ~(psize-1)) - psize; // fprintf(stderr, "writable code %lx(%lx)-%lx, length=%lx\n", startaddr, // addr, startaddr+length, length); r = mprotect ((char *) addr, length + startaddr - addr + psize, 7); if (r < 0) Sys_Error("Protection change failed\n"); } void Sys_DebugNumber(int y, int val) { } #define MAX_PRINT_MSG 4096 void Sys_Printf (char *fmt, ...) { va_list argptr; char start[MAX_PRINT_MSG]; // String we started with char stamp[MAX_PRINT_MSG]; // Time stamp char final[MAX_PRINT_MSG]; // String we print time_t mytime = 0; struct tm *local = NULL; unsigned char *p; va_start (argptr, fmt); vsnprintf (start, sizeof(start), fmt, argptr); va_end (argptr); if (nostdout) return; if (timestamps.value && timeformat.string) { mytime = time (NULL); local = localtime (&mytime); strftime (stamp, sizeof (stamp), timeformat.string, local); snprintf (final, sizeof (final), "%s%s", stamp, start); } else { snprintf (final, sizeof (final), "%s", start); } for (p = (unsigned char *) final; *p; p++) { putc (qfont_table[*p], stdout); } fflush (stdout); } void Sys_Error (char *error, ...) { va_list argptr; char string[1024]; // change stdin to non blocking fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY); va_start (argptr,error); vsprintf (string,error,argptr); va_end (argptr); fprintf(stderr, "Error: %s\n", string); Host_Shutdown (); exit (1); } void Sys_Quit (void) { Host_Shutdown (); fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY); fflush(stdout); exit (0); } void Sys_Init (void) { #ifdef USE_INTEL_ASM Sys_SetFPCW(); #endif } void Sys_Warn (char *warning, ...) { va_list argptr; char string[1024]; va_start (argptr, warning); vsprintf (string, warning, argptr); va_end (argptr); fprintf (stderr, "Warning: %s", string); } 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; } // ======================================================================= // Sleeps for microseconds // ======================================================================= static volatile int oktogo; void alarm_handler(int x) { oktogo=1; } void Sys_LineRefresh(void) { } void floating_point_exception_handler(int whatever) { // Sys_Warn("floating point exception\n"); signal(SIGFPE, floating_point_exception_handler); } char *Sys_ConsoleInput(void) { static char text[256]; int len; fd_set fdset; struct timeval timeout; if (cls.state == ca_dedicated) { FD_ZERO(&fdset); FD_SET(0, &fdset); // stdin timeout.tv_sec = 0; timeout.tv_usec = 0; if (select (1, &fdset, NULL, NULL, &timeout) == -1 || !FD_ISSET(0, &fdset)) return NULL; len = read (0, text, sizeof(text)); if (len < 1) return NULL; text[len-1] = 0; // rip off the /n and terminate return text; } return NULL; } #ifndef USE_INTEL_ASM void Sys_HighFPPrecision (void) { } void Sys_LowFPPrecision (void) { } #endif int main (int c, char **v) { double time, oldtime, newtime; quakeparms_t parms; extern int vcrFile; extern int recording; int j; // static char cwd[1024]; // signal(SIGFPE, floating_point_exception_handler); signal(SIGFPE, SIG_IGN); memset(&parms, 0, sizeof(parms)); COM_InitArgv(c, v); parms.argc = com_argc; parms.argv = com_argv; #ifdef GLQUAKE parms.memsize = 16*1024*1024; #else parms.memsize = 8*1024*1024; #endif j = COM_CheckParm("-mem"); if (j) parms.memsize = (int) (Q_atof(com_argv[j+1]) * 1024 * 1024); parms.membase = malloc (parms.memsize); parms.basedir = basedir; // caching is disabled by default, use -cachedir to enable // parms.cachedir = cachedir; fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY); Host_Init(&parms); Sys_Init(); if (COM_CheckParm("-nostdout")) nostdout = 1; else { fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY); printf ("Quake -- Version %s\n", QUAKE_VERSION); } oldtime = Sys_DoubleTime () - 0.1; while (1) { // find time spent rendering last frame newtime = Sys_DoubleTime (); time = newtime - oldtime; if (cls.state == ca_dedicated) { // play vcrfiles at max speed if (time < sys_ticrate.value && (vcrFile == -1 || recording) ) { usleep(1); continue; // not time to run a server only tic yet } time = sys_ticrate.value; } if (time > sys_ticrate.value*2) oldtime = newtime; else oldtime += time; Host_Frame (time); // graphic debugging aids if (sys_linerefresh.value) Sys_LineRefresh (); } }