ref: b8fdee42392c7a7692bb60483cc906dfa3acf62d
dir: /u/sys_win.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.
*/
// sys_win.c -- Win32 system interface code
#include "quakedef.h"
#include "winquake.h"
#include "errno.h"
#include "resource.h"
#include "conproc.h"
#define MINIMUM_WIN_MEMORY 0x0880000
#define MAXIMUM_WIN_MEMORY 0x1000000
#define CONSOLE_ERROR_TIMEOUT 60.0 // # of seconds to wait on Sys_Error running
// dedicated before exiting
#define PAUSE_SLEEP 50 // sleep time on pause or minimization
#define NOT_FOCUS_SLEEP 20 // sleep time when not focus
int starttime;
qboolean ActiveApp, Minimized;
qboolean WinNT;
static double pfreq;
static double curtime = 0.0;
static double lastcurtime = 0.0;
static int lowshift;
qboolean isDedicated;
static qboolean sc_return_on_enter = false;
HANDLE hinput, houtput;
static char *tracking_tag = "Clams & Mooses";
static HANDLE tevent;
static HANDLE hFile;
static HANDLE heventParent;
static HANDLE heventChild;
void MaskExceptions (void);
void Sys_InitFloatTime (void);
void Sys_PushFPCW_SetHigh (void);
void Sys_PopFPCW (void);
volatile int sys_checksum;
/*
================
Sys_PageIn
================
*/
void Sys_PageIn (void *ptr, int size)
{
byte *x;
int j, m, n;
// touch all the memory to make sure it's there. The 16-page skip is to
// keep Win 95 from thinking we're trying to page ourselves in (we are
// doing that, of course, but there's no reason we shouldn't)
x = (byte *)ptr;
for (n=0 ; n<4 ; n++)
{
for (m=0 ; m<(size - 16 * 0x1000) ; m += 4)
{
sys_checksum += *(int *)&x[m];
sys_checksum += *(int *)&x[m + 16 * 0x1000];
}
}
}
/*
===============================================================================
FILE IO
===============================================================================
*/
#define MAX_HANDLES 10
FILE *sys_handles[MAX_HANDLES];
int findhandle (void)
{
int i;
for (i=1 ; i<MAX_HANDLES ; i++)
if (!sys_handles[i])
return i;
Sys_Error ("out of handles");
return -1;
}
/*
================
filelength
================
*/
int filelength (FILE *f)
{
int pos;
int end;
int t;
t = VID_ForceUnlockedAndReturnState ();
pos = ftell (f);
fseek (f, 0, SEEK_END);
end = ftell (f);
fseek (f, pos, SEEK_SET);
VID_ForceLockState (t);
return end;
}
int Sys_FileOpenRead (char *path, int *hndl)
{
FILE *f;
int i, retval;
int t;
t = VID_ForceUnlockedAndReturnState ();
i = findhandle ();
f = fopen(path, "rb");
if (!f)
{
*hndl = -1;
retval = -1;
}
else
{
sys_handles[i] = f;
*hndl = i;
retval = filelength(f);
}
VID_ForceLockState (t);
return retval;
}
int Sys_FileOpenWrite (char *path)
{
FILE *f;
int i;
int t;
t = VID_ForceUnlockedAndReturnState ();
i = findhandle ();
f = fopen(path, "wb");
if (!f)
Sys_Error ("Error opening %s: %s", path,strerror(errno));
sys_handles[i] = f;
VID_ForceLockState (t);
return i;
}
void Sys_FileClose (int handle)
{
int t;
t = VID_ForceUnlockedAndReturnState ();
fclose (sys_handles[handle]);
sys_handles[handle] = NULL;
VID_ForceLockState (t);
}
void Sys_FileSeek (int handle, int position)
{
int t;
t = VID_ForceUnlockedAndReturnState ();
fseek (sys_handles[handle], position, SEEK_SET);
VID_ForceLockState (t);
}
int Sys_FileRead (int handle, void *dest, int count)
{
int t, x;
t = VID_ForceUnlockedAndReturnState ();
x = fread (dest, 1, count, sys_handles[handle]);
VID_ForceLockState (t);
return x;
}
int Sys_FileWrite (int handle, void *data, int count)
{
int t, x;
t = VID_ForceUnlockedAndReturnState ();
x = fwrite (data, 1, count, sys_handles[handle]);
VID_ForceLockState (t);
return x;
}
int Sys_FileTime (char *path)
{
FILE *f;
int t, retval;
t = VID_ForceUnlockedAndReturnState ();
f = fopen(path, "rb");
if (f)
{
fclose(f);
retval = 1;
}
else
{
retval = -1;
}
VID_ForceLockState (t);
return retval;
}
void Sys_mkdir (char *path)
{
_mkdir (path);
}
/*
===============================================================================
SYSTEM IO
===============================================================================
*/
/*
================
Sys_MakeCodeWriteable
================
*/
void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
{
DWORD flOldProtect;
if (!VirtualProtect((LPVOID)startaddr, length, PAGE_READWRITE, &flOldProtect))
Sys_Error("Protection change failed\n");
}
#ifndef _M_IX86
void Sys_SetFPCW (void)
{
}
void Sys_PushFPCW_SetHigh (void)
{
}
void Sys_PopFPCW (void)
{
}
void MaskExceptions (void)
{
}
#endif
/*
================
Sys_Init
================
*/
void Sys_Init (void)
{
LARGE_INTEGER PerformanceFreq;
unsigned int lowpart, highpart;
OSVERSIONINFO vinfo;
MaskExceptions ();
Sys_SetFPCW ();
if (!QueryPerformanceFrequency (&PerformanceFreq))
Sys_Error ("No hardware timer available");
// get 32 out of the 64 time bits such that we have around
// 1 microsecond resolution
lowpart = (unsigned int)PerformanceFreq.LowPart;
highpart = (unsigned int)PerformanceFreq.HighPart;
lowshift = 0;
while (highpart || (lowpart > 2000000.0))
{
lowshift++;
lowpart >>= 1;
lowpart |= (highpart & 1) << 31;
highpart >>= 1;
}
pfreq = 1.0 / (double)lowpart;
Sys_InitFloatTime ();
vinfo.dwOSVersionInfoSize = sizeof(vinfo);
if (!GetVersionEx (&vinfo))
Sys_Error ("Couldn't get OS info");
if ((vinfo.dwMajorVersion < 4) ||
(vinfo.dwPlatformId == VER_PLATFORM_WIN32s))
{
Sys_Error ("WinQuake requires at least Win95 or NT 4.0");
}
if (vinfo.dwPlatformId == VER_PLATFORM_WIN32_NT)
WinNT = true;
else
WinNT = false;
}
void Sys_Error (char *error, ...)
{
va_list argptr;
char text[1024], text2[1024];
char *text3 = "Press Enter to exit\n";
char *text4 = "***********************************\n";
char *text5 = "\n";
DWORD dummy;
double starttime;
static int in_sys_error0 = 0;
static int in_sys_error1 = 0;
static int in_sys_error2 = 0;
static int in_sys_error3 = 0;
if (!in_sys_error3)
{
in_sys_error3 = 1;
VID_ForceUnlockedAndReturnState ();
}
va_start (argptr, error);
vsprintf (text, error, argptr);
va_end (argptr);
if (isDedicated)
{
va_start (argptr, error);
vsprintf (text, error, argptr);
va_end (argptr);
sprintf (text2, "ERROR: %s\n", text);
WriteFile (houtput, text5, strlen (text5), &dummy, NULL);
WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
WriteFile (houtput, text2, strlen (text2), &dummy, NULL);
WriteFile (houtput, text3, strlen (text3), &dummy, NULL);
WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
starttime = Sys_FloatTime ();
sc_return_on_enter = true; // so Enter will get us out of here
while (!Sys_ConsoleInput () &&
((Sys_FloatTime () - starttime) < CONSOLE_ERROR_TIMEOUT))
{
}
}
else
{
// switch to windowed so the message box is visible, unless we already
// tried that and failed
if (!in_sys_error0)
{
in_sys_error0 = 1;
VID_SetDefaultMode ();
MessageBox(NULL, text, "Quake Error",
MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
}
else
{
MessageBox(NULL, text, "Double Quake Error",
MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
}
}
if (!in_sys_error1)
{
in_sys_error1 = 1;
Host_Shutdown ();
}
// shut down QHOST hooks if necessary
if (!in_sys_error2)
{
in_sys_error2 = 1;
DeinitConProc ();
}
exit (1);
}
void Sys_Printf (char *fmt, ...)
{
va_list argptr;
char text[1024];
DWORD dummy;
if (isDedicated)
{
va_start (argptr,fmt);
vsprintf (text, fmt, argptr);
va_end (argptr);
WriteFile(houtput, text, strlen (text), &dummy, NULL);
}
}
void Sys_Quit (void)
{
VID_ForceUnlockedAndReturnState ();
Host_Shutdown();
if (tevent)
CloseHandle (tevent);
if (isDedicated)
FreeConsole ();
// shut down QHOST hooks if necessary
DeinitConProc ();
exit (0);
}
/*
================
Sys_FloatTime
================
*/
double Sys_FloatTime (void)
{
static int sametimecount;
static unsigned int oldtime;
static int first = 1;
LARGE_INTEGER PerformanceCount;
unsigned int temp, t2;
double time;
Sys_PushFPCW_SetHigh ();
QueryPerformanceCounter (&PerformanceCount);
temp = ((unsigned int)PerformanceCount.LowPart >> lowshift) |
((unsigned int)PerformanceCount.HighPart << (32 - lowshift));
if (first)
{
oldtime = temp;
first = 0;
}
else
{
// check for turnover or backward time
if ((temp <= oldtime) && ((oldtime - temp) < 0x10000000))
{
oldtime = temp; // so we can't get stuck
}
else
{
t2 = temp - oldtime;
time = (double)t2 * pfreq;
oldtime = temp;
curtime += time;
if (curtime == lastcurtime)
{
sametimecount++;
if (sametimecount > 100000)
{
curtime += 1.0;
sametimecount = 0;
}
}
else
{
sametimecount = 0;
}
lastcurtime = curtime;
}
}
Sys_PopFPCW ();
return curtime;
}
/*
================
Sys_InitFloatTime
================
*/
void Sys_InitFloatTime (void)
{
int j;
Sys_FloatTime ();
j = COM_CheckParm("-starttime");
if (j)
{
curtime = (double) (Q_atof(com_argv[j+1]));
}
else
{
curtime = 0.0;
}
lastcurtime = curtime;
}
char *Sys_ConsoleInput (void)
{
static char text[256];
static int len;
INPUT_RECORD recs[1024];
int count;
int i, dummy;
int ch, numread, numevents;
if (!isDedicated)
return NULL;
for ( ;; )
{
if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
Sys_Error ("Error getting # of console events");
if (numevents <= 0)
break;
if (!ReadConsoleInput(hinput, recs, 1, &numread))
Sys_Error ("Error reading console input");
if (numread != 1)
Sys_Error ("Couldn't read console input");
if (recs[0].EventType == KEY_EVENT)
{
if (!recs[0].Event.KeyEvent.bKeyDown)
{
ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
switch (ch)
{
case '\r':
WriteFile(houtput, "\r\n", 2, &dummy, NULL);
if (len)
{
text[len] = 0;
len = 0;
return text;
}
else if (sc_return_on_enter)
{
// special case to allow exiting from the error handler on Enter
text[0] = '\r';
len = 0;
return text;
}
break;
case '\b':
WriteFile(houtput, "\b \b", 3, &dummy, NULL);
if (len)
{
len--;
}
break;
default:
if (ch >= ' ')
{
WriteFile(houtput, &ch, 1, &dummy, NULL);
text[len] = ch;
len = (len + 1) & 0xff;
}
break;
}
}
}
}
return NULL;
}
void Sys_Sleep (void)
{
Sleep (1);
}
void Sys_SendKeyEvents (void)
{
MSG msg;
while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
{
// we always update if there are any event, even if we're paused
scr_skipupdate = 0;
if (!GetMessage (&msg, NULL, 0, 0))
Sys_Quit ();
TranslateMessage (&msg);
DispatchMessage (&msg);
}
}
/*
==============================================================================
WINDOWS CRAP
==============================================================================
*/
/*
==================
WinMain
==================
*/
void SleepUntilInput (int time)
{
MsgWaitForMultipleObjects(1, &tevent, FALSE, time, QS_ALLINPUT);
}
/*
==================
WinMain
==================
*/
HINSTANCE global_hInstance;
int global_nCmdShow;
char *argv[MAX_NUM_ARGVS];
static char *empty_string = "";
HWND hwnd_dialog;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
MSG msg;
quakeparms_t parms;
double time, oldtime, newtime;
MEMORYSTATUS lpBuffer;
static char cwd[1024];
int t;
RECT rect;
/* previous instances do not exist in Win32 */
if (hPrevInstance)
return 0;
global_hInstance = hInstance;
global_nCmdShow = nCmdShow;
lpBuffer.dwLength = sizeof(MEMORYSTATUS);
GlobalMemoryStatus (&lpBuffer);
if (!GetCurrentDirectory (sizeof(cwd), cwd))
Sys_Error ("Couldn't determine current directory");
if (cwd[Q_strlen(cwd)-1] == '/')
cwd[Q_strlen(cwd)-1] = 0;
parms.basedir = cwd;
parms.cachedir = NULL;
parms.argc = 1;
argv[0] = empty_string;
while (*lpCmdLine && (parms.argc < MAX_NUM_ARGVS))
{
while (*lpCmdLine && ((*lpCmdLine <= 32) || (*lpCmdLine > 126)))
lpCmdLine++;
if (*lpCmdLine)
{
argv[parms.argc] = lpCmdLine;
parms.argc++;
while (*lpCmdLine && ((*lpCmdLine > 32) && (*lpCmdLine <= 126)))
lpCmdLine++;
if (*lpCmdLine)
{
*lpCmdLine = 0;
lpCmdLine++;
}
}
}
parms.argv = argv;
COM_InitArgv (parms.argc, parms.argv);
parms.argc = com_argc;
parms.argv = com_argv;
isDedicated = (COM_CheckParm ("-dedicated") != 0);
if (!isDedicated)
{
hwnd_dialog = CreateDialog(hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, NULL);
if (hwnd_dialog)
{
if (GetWindowRect (hwnd_dialog, &rect))
{
if (rect.left > (rect.top * 2))
{
SetWindowPos (hwnd_dialog, 0,
(rect.left / 2) - ((rect.right - rect.left) / 2),
rect.top, 0, 0,
SWP_NOZORDER | SWP_NOSIZE);
}
}
ShowWindow (hwnd_dialog, SW_SHOWDEFAULT);
UpdateWindow (hwnd_dialog);
SetForegroundWindow (hwnd_dialog);
}
}
// take the greater of all the available memory or half the total memory,
// but at least 8 Mb and no more than 16 Mb, unless they explicitly
// request otherwise
parms.memsize = lpBuffer.dwAvailPhys;
if (parms.memsize < MINIMUM_WIN_MEMORY)
parms.memsize = MINIMUM_WIN_MEMORY;
if (parms.memsize < (lpBuffer.dwTotalPhys >> 1))
parms.memsize = lpBuffer.dwTotalPhys >> 1;
if (parms.memsize > MAXIMUM_WIN_MEMORY)
parms.memsize = MAXIMUM_WIN_MEMORY;
if (COM_CheckParm ("-heapsize"))
{
t = COM_CheckParm("-heapsize") + 1;
if (t < com_argc)
parms.memsize = Q_atoi (com_argv[t]) * 1024;
}
parms.membase = malloc (parms.memsize);
if (!parms.membase)
Sys_Error ("Not enough memory free; check disk space\n");
Sys_PageIn (parms.membase, parms.memsize);
tevent = CreateEvent(NULL, FALSE, FALSE, NULL);
if (!tevent)
Sys_Error ("Couldn't create event");
if (isDedicated)
{
if (!AllocConsole ())
{
Sys_Error ("Couldn't create dedicated server console");
}
hinput = GetStdHandle (STD_INPUT_HANDLE);
houtput = GetStdHandle (STD_OUTPUT_HANDLE);
// give QHOST a chance to hook into the console
if ((t = COM_CheckParm ("-HFILE")) > 0)
{
if (t < com_argc)
hFile = (HANDLE)Q_atoi (com_argv[t+1]);
}
if ((t = COM_CheckParm ("-HPARENT")) > 0)
{
if (t < com_argc)
heventParent = (HANDLE)Q_atoi (com_argv[t+1]);
}
if ((t = COM_CheckParm ("-HCHILD")) > 0)
{
if (t < com_argc)
heventChild = (HANDLE)Q_atoi (com_argv[t+1]);
}
InitConProc (hFile, heventParent, heventChild);
}
Sys_Init ();
// because sound is off until we become active
S_BlockSound ();
Sys_Printf ("Host_Init\n");
Host_Init (&parms);
oldtime = Sys_FloatTime ();
/* main window message loop */
while (1)
{
if (isDedicated)
{
newtime = Sys_FloatTime ();
time = newtime - oldtime;
while (time < sys_ticrate.value )
{
Sys_Sleep();
newtime = Sys_FloatTime ();
time = newtime - oldtime;
}
}
else
{
// yield the CPU for a little while when paused, minimized, or not the focus
if ((cl.paused && (!ActiveApp && !DDActive)) || Minimized || block_drawing)
{
SleepUntilInput (PAUSE_SLEEP);
scr_skipupdate = 1; // no point in bothering to draw
}
else if (!ActiveApp && !DDActive)
{
SleepUntilInput (NOT_FOCUS_SLEEP);
}
newtime = Sys_FloatTime ();
time = newtime - oldtime;
}
Host_Frame (time);
oldtime = newtime;
}
/* return success of application */
return TRUE;
}