fteqw/engine/client/sys_linux.c

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/*
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.
*/
//well, linux or cygwin (windows with posix emulation layer), anyway...
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <limits.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <dlfcn.h>
#ifndef __CYGWIN__
#include <sys/ipc.h>
#include <sys/shm.h>
#endif
#include <sys/stat.h>
#include <string.h>
#include <ctype.h>
#include <sys/wait.h>
#include <sys/mman.h>
#include <errno.h>
#ifndef __MACOSX__
#include <X11/Xlib.h>
#endif
#ifdef MULTITHREAD
#include <pthread.h>
#endif
#include "quakedef.h"
#undef malloc
int noconinput = 0;
int nostdout = 0;
char *basedir = ".";
qboolean Sys_InitTerminal (void) //we either have one or we don't.
{
return true;
}
void Sys_CloseTerminal (void)
{
}
#ifndef CLIENTONLY
qboolean isDedicated;
#endif
// =======================================================================
// General routines
// =======================================================================
void Sys_Printf (char *fmt, ...)
{
va_list argptr;
char text[2048];
unsigned char *p;
va_start (argptr,fmt);
_vsnprintf (text,sizeof(text)-1, fmt,argptr);
va_end (argptr);
if (strlen(text) > sizeof(text))
Sys_Error("memory overwrite in Sys_Printf");
if (nostdout)
return;
for (p = (unsigned char *)text; *p; p++)
if ((*p > 128 || *p < 32) && *p != 10 && *p != 13 && *p != 9)
printf("[%02x]", *p);
else
putc(*p, stdout);
}
void Sys_Quit (void)
{
Host_Shutdown();
fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
exit(0);
}
void Sys_Init(void)
{
#if id386
Sys_SetFPCW();
#endif
}
void Sys_Error (const 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);
_vsnprintf (string,sizeof(string)-1, error,argptr);
va_end (argptr);
fprintf(stderr, "Error: %s\n", string);
Host_Shutdown ();
exit (1);
}
void Sys_Warn (char *warning, ...)
{
va_list argptr;
char string[1024];
va_start (argptr,warning);
_vsnprintf (string,sizeof(string)-1, warning,argptr);
va_end (argptr);
fprintf(stderr, "Warning: %s", string);
}
/*
============
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;
}
void Sys_mkdir (char *path)
{
mkdir (path, 0777);
}
qboolean Sys_remove (char *path)
{
return system(va("rm \"%s\"", path));
}
int Sys_FileOpenRead (char *path, int *handle)
{
int h;
struct stat fileinfo;
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);
}
int Sys_DebugLog(char *file, char *fmt, ...)
{
va_list argptr;
static char data[1024];
int fd;
va_start(argptr, fmt);
_vsnprintf (data,sizeof(data)-1, fmt, argptr);
va_end(argptr);
if (strlen(data) > sizeof(data))
Sys_Error("Sys_DebugLog's buffer was stomped\n");
// fd = open(file, O_WRONLY | O_BINARY | O_CREAT | O_APPEND, 0666);
fd = open(file, O_WRONLY | O_CREAT | O_APPEND, 0666);
if (fd)
{
write(fd, data, strlen(data));
close(fd);
return 0;
}
return 1;
}
int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void *), void *parm)
{
#include <dirent.h>
DIR *dir, *dir2;
char apath[MAX_OSPATH];
char file[MAX_OSPATH];
char truepath[MAX_OSPATH];
char *s;
struct dirent *ent;
//printf("path = %s\n", gpath);
//printf("match = %s\n", match);
if (!gpath)
gpath = "";
*apath = '\0';
Q_strncpyz(apath, match, sizeof(apath));
for (s = apath+strlen(apath)-1; s >= apath; s--)
{
if (*s == '/')
{
s[1] = '\0';
match += s - apath+1;
break;
}
}
if (s < apath) //didn't find a '/'
*apath = '\0';
Q_snprintfz(truepath, sizeof(truepath), "%s/%s", gpath, apath);
//printf("truepath = %s\n", truepath);
//printf("gamepath = %s\n", gpath);
//printf("apppath = %s\n", apath);
//printf("match = %s\n", match);
dir = opendir(truepath);
if (!dir)
{
Con_DPrintf("Failed to open dir %s\n", truepath);
return true;
}
do
{
ent = readdir(dir);
if (!ent)
break;
if (*ent->d_name != '.')
if (wildcmp(match, ent->d_name))
{
Q_snprintfz(file, sizeof(file), "%s/%s", gpath, ent->d_name);
//would use stat, but it breaks on fat32.
if ((dir2 = opendir(file)))
{
closedir(dir2);
Q_snprintfz(file, sizeof(file), "%s%s/", apath, ent->d_name);
//printf("is directory = %s\n", file);
}
else
{
Q_snprintfz(file, sizeof(file), "%s%s", apath, ent->d_name);
//printf("file = %s\n", file);
}
if (!func(file, -2, parm))
{
closedir(dir);
return false;
}
}
} while(1);
closedir(dir);
return true;
}
int secbase;
unsigned int Sys_Milliseconds (void)
{
struct timeval tp;
struct timezone tzp;
gettimeofday(&tp, &tzp);
if (!secbase)
{
secbase = tp.tv_sec;
return tp.tv_usec/1000;
}
return (tp.tv_sec - secbase)*1000 + tp.tv_usec/1000;
}
double Sys_DoubleTime (void)
{
struct timeval tp;
struct timezone tzp;
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;
}
static void *game_library;
void Sys_UnloadGame(void)
{
if (game_library)
{
dlclose(game_library);
game_library = 0;
}
}
void *Sys_GetGameAPI(void *parms)
{
void *(*GetGameAPI)(void *);
char name[MAX_OSPATH];
char curpath[MAX_OSPATH];
char *searchpath;
const char *gamename = "gamei386.so";
void *ret;
getcwd(curpath, sizeof(curpath));
searchpath = 0;
while((searchpath = COM_NextPath(searchpath)))
{
if (searchpath[0] == '/')
snprintf(name, sizeof(name), "%s/%s", searchpath, gamename);
else
snprintf(name, sizeof(name), "%s/%s/%s", curpath, searchpath, gamename);
game_library = dlopen (name, RTLD_LAZY );
if (game_library)
{
GetGameAPI = (void *)dlsym (game_library, "GetGameAPI");
if (GetGameAPI && (ret = GetGameAPI(parms)))
{
return ret;
}
dlclose(game_library);
game_library = 0;
}
}
return 0;
}
// =======================================================================
// Sleeps for microseconds
// =======================================================================
static volatile int oktogo;
void alarm_handler(int x)
{
oktogo=1;
}
char *Sys_ConsoleInput(void)
{
#if 0
static char text[256];
int len;
if (cls.state == ca_dedicated)
{
len = read (0, text, sizeof(text));
if (len < 1)
return NULL;
text[len-1] = 0; // rip off the /n and terminate
return text;
}
#endif
return NULL;
}
#if !id386
void Sys_HighFPPrecision (void)
{
}
void Sys_LowFPPrecision (void)
{
}
#endif
int main (int c, char **v)
{
double time, oldtime, newtime;
quakeparms_t parms;
int j;
// static char cwd[1024];
signal(SIGFPE, SIG_IGN);
signal(SIGPIPE, SIG_IGN);
memset(&parms, 0, sizeof(parms));
COM_InitArgv(c, v);
TL_InitLanguages();
parms.argc = com_argc;
parms.argv = com_argv;
parms.memsize = 16*1024*1024;
j = COM_CheckParm("-mem");
if (j && j+1 < com_argc)
parms.memsize = (int) (Q_atof(com_argv[j+1]) * 1024 * 1024);
parms.membase = malloc (parms.memsize);
parms.basedir = basedir;
noconinput = COM_CheckParm("-noconinput");
if (!noconinput)
fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
if (COM_CheckParm("-nostdout"))
nostdout = 1;
Host_Init(&parms);
oldtime = Sys_DoubleTime ();
while (1)
{
#ifdef __MACOSX__
//wow, not even windows was this absurd.
#ifdef RGLQUAKE
if (glcocoaRunLoop())
{
oldtime = Sys_DoubleTime ();
continue;
}
#endif
#ifdef SWQUAKE
#warning don't worry if this causes linker errors - we don't have a macos sw renderer yet!
if (swcocoaRunLoop())
{
oldtime = Sys_DoubleTime ();
continue;
}
#endif
#endif
// find time spent rendering last frame
newtime = Sys_DoubleTime ();
time = newtime - oldtime;
Host_Frame(time);
oldtime = newtime;
}
}
/*
================
Sys_MakeCodeWriteable
================
*/
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");
}
//fixme: some sort of taskbar/gnome panel flashing.
void Sys_ServerActivity(void)
{
}
//FIXME: this is hacky. Unlike other OSes where the GUI is part of the OS, X is seperate
//from the OS. This will cause problems with framebuffer-only setups.
qboolean Sys_GetDesktopParameters(int *width, int *height, int *bpp, int *refreshrate)
{
#ifdef __MACOSX__
//this about sums up the problem with this function
return false;
#else
Display *xtemp;
int scr;
xtemp = XOpenDisplay(NULL);
if (!xtemp)
return false;
scr = DefaultScreen(xtemp);
*width = DisplayWidth(xtemp, scr);
*height = DisplayHeight(xtemp, scr);
*bpp = DefaultDepth(xtemp, scr);
*refreshrate = 0;
XCloseDisplay(xtemp);
return true;
#endif
}
#define SYS_CLIPBOARD_SIZE 256
static char clipboard_buffer[SYS_CLIPBOARD_SIZE] = {0};
char *Sys_GetClipboard(void) {
return clipboard_buffer;
}
void Sys_CloseClipboard(char *bf)
{
}
void Sys_SaveClipboard(char *text) {
Q_strncpyz(clipboard_buffer, text, SYS_CLIPBOARD_SIZE);
}
#ifdef MULTITHREAD
/* Thread creation calls */
typedef void *(*pfunction_t)(void *);
qboolean Sys_CreateThread(int (*func)(void *), void *args, int stacksize)
{
pthread_t thread;
pthread_attr_t attr;
pthread_attr_init(&attr);
if (stacksize < PTHREAD_STACK_MIN)
stacksize = PTHREAD_STACK_MIN;
pthread_attr_setstacksize(&attr, stacksize);
return !pthread_create(&thread, &attr, (pfunction_t)func, args);
}
/* Mutex calls */
void *Sys_CreateMutex()
{
pthread_mutex_t *mutex = (pthread_mutex_t *)malloc(sizeof(pthread_mutex_t));
if (mutex && !pthread_mutex_init(mutex, NULL))
return mutex;
return NULL;
}
qboolean Sys_TryLockMutex(void *mutex)
{
return !pthread_mutex_trylock(mutex);
}
qboolean Sys_LockMutex(void *mutex)
{
return !pthread_mutex_lock(mutex);
}
qboolean Sys_UnlockMutex(void *mutex)
{
return !pthread_mutex_unlock(mutex);
}
void Sys_DestroyMutex(void *mutex)
{
pthread_mutex_destroy(mutex);
free(mutex);
}
#endif