485 lines
9.7 KiB
C
485 lines
9.7 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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$Id$
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <signal.h>
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#include <string.h>
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#include <time.h>
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#include "sys.h"
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#include "qargs.h"
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#include "cvar.h"
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#include "server.h"
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#include "host.h"
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qboolean isDedicated;
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int nostdout = 0;
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char *basedir = ".";
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char *cachedir = "/tmp";
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cvar_t *sys_linerefresh;
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cvar_t *timestamps;
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cvar_t *timeformat;
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/* The translation table between the graphical font and plain ASCII --KB */
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static char qfont_table[256] = {
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'\0', '#', '#', '#', '#', '.', '#', '#',
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'#', 9, 10, '#', ' ', 13, '.', '.',
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'[', ']', '0', '1', '2', '3', '4', '5',
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'6', '7', '8', '9', '.', '<', '=', '>',
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' ', '!', '"', '#', '$', '%', '&', '\'',
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'(', ')', '*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', ':', ';', '<', '=', '>', '?',
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'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
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'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
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'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
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'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
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'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
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'x', 'y', 'z', '{', '|', '}', '~', '<',
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'<', '=', '>', '#', '#', '.', '#', '#',
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'#', '#', ' ', '#', ' ', '>', '.', '.',
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'[', ']', '0', '1', '2', '3', '4', '5',
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'6', '7', '8', '9', '.', '<', '=', '>',
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' ', '!', '"', '#', '$', '%', '&', '\'',
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'(', ')', '*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', ':', ';', '<', '=', '>', '?',
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'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
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'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
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'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
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'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
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'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
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'x', 'y', 'z', '{', '|', '}', '~', '<'
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};
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/*
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* File I/O
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*/
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/*
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Sys_FileTime
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Returns -1 if file not present
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*/
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int
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Sys_FileTime (char *path)
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{
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struct stat buf;
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if (stat (path, &buf) == -1)
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return -1;
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return buf.st_mtime;
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}
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/*
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Sys_mkdir
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Creates a directory
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*/
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void
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Sys_mkdir (char *path)
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{
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mkdir (path, 0777);
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}
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int
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Sys_FileOpenRead (char *path, int *handle)
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{
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struct stat fileinfo;
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int h;
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h = open (path, O_RDONLY, 0666);
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*handle = h;
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if (h == -1)
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return -1;
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if (fstat (h, &fileinfo) == -1)
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Sys_Error ("Error fstating %s", path);
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return fileinfo.st_size;
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}
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int
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Sys_FileOpenWrite (char *path)
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{
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int handle;
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umask (0);
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handle = open (path, O_RDWR | O_CREAT | O_TRUNC, 0666);
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if (handle == -1)
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Sys_Error ("Error opening %s: %s", path,strerror(errno));
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return handle;
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}
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int
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Sys_FileWrite (int handle, void *src, int count)
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{
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return write (handle, src, count);
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}
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void
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Sys_FileClose (int handle)
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{
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close (handle);
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}
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void
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Sys_FileSeek (int handle, int position)
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{
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lseek (handle, position, SEEK_SET);
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}
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int
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Sys_FileRead (int handle, void *dest, int count)
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{
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return read (handle, dest, count);
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}
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void
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Sys_DebugLog(char *file, 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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Sys_EditFile (char *filename)
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{
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char cmd[256];
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char *term;
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char *editor;
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term = getenv ("TERM");
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if (term && !strcmp(term, "xterm")) {
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editor = getenv ("VISUAL");
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if (!editor)
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editor = getenv ("EDITOR");
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if (!editor)
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editor = getenv ("EDIT");
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if (!editor)
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editor = "vi";
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snprintf (cmd, sizeof(cmd), "xterm -e %s %s", editor, filename);
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system (cmd);
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}
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}
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/*
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* System I/O
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*/
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void
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Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
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{
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int r;
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unsigned long addr;
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int psize = getpagesize();
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addr = (startaddr & ~(psize-1)) - psize;
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// fprintf(stderr, "writable code %lx(%lx)-%lx, length=%lx\n", startaddr,
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// addr, startaddr+length, length);
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r = mprotect ((char *) addr, length + startaddr - addr + psize, 7);
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if (r < 0)
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Sys_Error("Protection change failed\n");
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}
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void Sys_DebugNumber(int y, int val)
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{
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}
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#define MAX_PRINT_MSG 4096
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void
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Sys_Printf (char *fmt, ...)
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{
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va_list argptr;
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char start[MAX_PRINT_MSG]; // String we started with
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char stamp[MAX_PRINT_MSG]; // Time stamp
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char final[MAX_PRINT_MSG]; // String we print
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time_t mytime = 0;
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struct tm *local = NULL;
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unsigned char *p;
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va_start (argptr, fmt);
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vsnprintf (start, sizeof(start), fmt, argptr);
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va_end (argptr);
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if (nostdout)
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return;
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if (timestamps && timeformat && timestamps->int_val && timeformat->string) {
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mytime = time (NULL);
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local = localtime (&mytime);
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strftime (stamp, sizeof (stamp), timeformat->string, local);
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snprintf (final, sizeof (final), "%s%s", stamp, start);
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} else {
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snprintf (final, sizeof (final), "%s", start);
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}
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for (p = (unsigned char *) final; *p; p++) {
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putc (qfont_table[*p], stdout);
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}
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fflush (stdout);
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}
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void
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Sys_Error (char *error, ...)
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{
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va_list argptr;
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char string[1024];
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// change stdin to non blocking
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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va_start (argptr,error);
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vsnprintf (string, sizeof(string), error,argptr);
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va_end (argptr);
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fprintf(stderr, "Error: %s\n", string);
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Host_Shutdown ();
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exit (1);
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}
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void
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Sys_Quit (void)
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{
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Host_Shutdown ();
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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fflush(stdout);
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exit (0);
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}
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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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void
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Sys_Warn (char *warning, ...)
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{
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va_list argptr;
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char string[1024];
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va_start (argptr, warning);
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vsnprintf (string, sizeof(string), warning, argptr);
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va_end (argptr);
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fprintf (stderr, "Warning: %s", string);
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}
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double
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Sys_DoubleTime (void)
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{
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struct timeval tp;
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struct timezone tzp;
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static int secbase;
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gettimeofday(&tp, &tzp);
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if (!secbase) {
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secbase = tp.tv_sec;
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return tp.tv_usec/1000000.0;
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}
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return (tp.tv_sec - secbase) + tp.tv_usec/1000000.0;
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}
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// =======================================================================
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// Sleeps for microseconds
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// =======================================================================
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static volatile int oktogo;
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void alarm_handler(int x)
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{
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oktogo=1;
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}
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void Sys_LineRefresh(void)
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{
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}
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void 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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char *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 || !FD_ISSET(0, &fdset))
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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 Sys_HighFPPrecision (void)
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{
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}
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void Sys_LowFPPrecision (void)
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{
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}
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#endif
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int main (int c, char **v)
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{
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double time, oldtime, newtime;
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quakeparms_t parms;
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extern int vcrFile;
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extern int recording;
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int j;
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// static char cwd[1024];
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// signal(SIGFPE, floating_point_exception_handler);
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signal(SIGFPE, SIG_IGN);
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memset(&parms, 0, sizeof(parms));
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COM_InitArgv(c, v);
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parms.argc = com_argc;
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parms.argv = com_argv;
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parms.memsize = 16*1024*1024;
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j = COM_CheckParm("-mem");
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if (j)
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parms.memsize = (int) (atof(com_argv[j+1]) * 1024 * 1024);
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parms.membase = malloc (parms.memsize);
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parms.basedir = basedir;
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// caching is disabled by default, use -cachedir to enable
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// parms.cachedir = cachedir;
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fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
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Host_Init(&parms);
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Sys_Init();
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if (COM_CheckParm("-nostdout"))
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nostdout = 1;
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else {
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fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
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printf ("Quake -- Version %s\n", QUAKE_VERSION);
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}
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oldtime = Sys_DoubleTime () - 0.1;
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while (1)
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{
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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)
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{ // play vcrfiles at max speed
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if (time < sys_ticrate->value && (vcrFile == -1 || recording) )
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{
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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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// graphic debugging aids
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// if (sys_linerefresh->value)
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// Sys_LineRefresh ();
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}
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}
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