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doom3-bfg/neo/sys/win32/win_main.cpp

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2012-11-26 18:58:24 +00:00
/*
===========================================================================
Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
Doom 3 BFG Edition Source Code 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 3 of the License, or
(at your option) any later version.
Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#pragma hdrstop
#include "../../idlib/precompiled.h"
#include <errno.h>
#include <float.h>
#include <fcntl.h>
#include <direct.h>
#include <io.h>
#include <conio.h>
#include <mapi.h>
#include <ShellAPI.h>
#include <Shlobj.h>
#ifndef __MRC__
#include <sys/types.h>
#include <sys/stat.h>
#endif
#include "../sys_local.h"
#include "win_local.h"
#include "../../renderer/tr_local.h"
idCVar Win32Vars_t::sys_arch( "sys_arch", "", CVAR_SYSTEM | CVAR_INIT, "" );
idCVar Win32Vars_t::sys_cpustring( "sys_cpustring", "detect", CVAR_SYSTEM | CVAR_INIT, "" );
idCVar Win32Vars_t::in_mouse( "in_mouse", "1", CVAR_SYSTEM | CVAR_BOOL, "enable mouse input" );
idCVar Win32Vars_t::win_allowAltTab( "win_allowAltTab", "0", CVAR_SYSTEM | CVAR_BOOL, "allow Alt-Tab when fullscreen" );
idCVar Win32Vars_t::win_notaskkeys( "win_notaskkeys", "0", CVAR_SYSTEM | CVAR_INTEGER, "disable windows task keys" );
idCVar Win32Vars_t::win_username( "win_username", "", CVAR_SYSTEM | CVAR_INIT, "windows user name" );
idCVar Win32Vars_t::win_outputEditString( "win_outputEditString", "1", CVAR_SYSTEM | CVAR_BOOL, "" );
idCVar Win32Vars_t::win_viewlog( "win_viewlog", "0", CVAR_SYSTEM | CVAR_INTEGER, "" );
idCVar Win32Vars_t::win_timerUpdate( "win_timerUpdate", "0", CVAR_SYSTEM | CVAR_BOOL, "allows the game to be updated while dragging the window" );
idCVar Win32Vars_t::win_allowMultipleInstances( "win_allowMultipleInstances", "0", CVAR_SYSTEM | CVAR_BOOL, "allow multiple instances running concurrently" );
Win32Vars_t win32;
static char sys_cmdline[MAX_STRING_CHARS];
static sysMemoryStats_t exeLaunchMemoryStats;
static HANDLE hProcessMutex;
/*
================
Sys_GetExeLaunchMemoryStatus
================
*/
void Sys_GetExeLaunchMemoryStatus( sysMemoryStats_t &stats ) {
stats = exeLaunchMemoryStats;
}
/*
==================
Sys_Sentry
==================
*/
void Sys_Sentry() {
}
#pragma optimize( "", on )
#ifdef DEBUG
static unsigned int debug_total_alloc = 0;
static unsigned int debug_total_alloc_count = 0;
static unsigned int debug_current_alloc = 0;
static unsigned int debug_current_alloc_count = 0;
static unsigned int debug_frame_alloc = 0;
static unsigned int debug_frame_alloc_count = 0;
idCVar sys_showMallocs( "sys_showMallocs", "0", CVAR_SYSTEM, "" );
// _HOOK_ALLOC, _HOOK_REALLOC, _HOOK_FREE
typedef struct CrtMemBlockHeader
{
struct _CrtMemBlockHeader *pBlockHeaderNext; // Pointer to the block allocated just before this one:
struct _CrtMemBlockHeader *pBlockHeaderPrev; // Pointer to the block allocated just after this one
char *szFileName; // File name
int nLine; // Line number
size_t nDataSize; // Size of user block
int nBlockUse; // Type of block
long lRequest; // Allocation number
byte gap[4]; // Buffer just before (lower than) the user's memory:
} CrtMemBlockHeader;
#include <crtdbg.h>
/*
==================
Sys_AllocHook
called for every malloc/new/free/delete
==================
*/
int Sys_AllocHook( int nAllocType, void *pvData, size_t nSize, int nBlockUse, long lRequest, const unsigned char * szFileName, int nLine )
{
CrtMemBlockHeader *pHead;
byte *temp;
if ( nBlockUse == _CRT_BLOCK )
{
return( TRUE );
}
// get a pointer to memory block header
temp = ( byte * )pvData;
temp -= 32;
pHead = ( CrtMemBlockHeader * )temp;
switch( nAllocType ) {
case _HOOK_ALLOC:
debug_total_alloc += nSize;
debug_current_alloc += nSize;
debug_frame_alloc += nSize;
debug_total_alloc_count++;
debug_current_alloc_count++;
debug_frame_alloc_count++;
break;
case _HOOK_FREE:
assert( pHead->gap[0] == 0xfd && pHead->gap[1] == 0xfd && pHead->gap[2] == 0xfd && pHead->gap[3] == 0xfd );
debug_current_alloc -= pHead->nDataSize;
debug_current_alloc_count--;
debug_total_alloc_count++;
debug_frame_alloc_count++;
break;
case _HOOK_REALLOC:
assert( pHead->gap[0] == 0xfd && pHead->gap[1] == 0xfd && pHead->gap[2] == 0xfd && pHead->gap[3] == 0xfd );
debug_current_alloc -= pHead->nDataSize;
debug_total_alloc += nSize;
debug_current_alloc += nSize;
debug_frame_alloc += nSize;
debug_total_alloc_count++;
debug_current_alloc_count--;
debug_frame_alloc_count++;
break;
}
return( TRUE );
}
/*
==================
Sys_DebugMemory_f
==================
*/
void Sys_DebugMemory_f() {
common->Printf( "Total allocation %8dk in %d blocks\n", debug_total_alloc / 1024, debug_total_alloc_count );
common->Printf( "Current allocation %8dk in %d blocks\n", debug_current_alloc / 1024, debug_current_alloc_count );
}
/*
==================
Sys_MemFrame
==================
*/
void Sys_MemFrame() {
if( sys_showMallocs.GetInteger() ) {
common->Printf("Frame: %8dk in %5d blocks\n", debug_frame_alloc / 1024, debug_frame_alloc_count );
}
debug_frame_alloc = 0;
debug_frame_alloc_count = 0;
}
#endif
/*
==================
Sys_FlushCacheMemory
On windows, the vertex buffers are write combined, so they
don't need to be flushed from the cache
==================
*/
void Sys_FlushCacheMemory( void *base, int bytes ) {
}
/*
=============
Sys_Error
Show the early console as an error dialog
=============
*/
void Sys_Error( const char *error, ... ) {
va_list argptr;
char text[4096];
MSG msg;
va_start( argptr, error );
vsprintf( text, error, argptr );
va_end( argptr);
Conbuf_AppendText( text );
Conbuf_AppendText( "\n" );
Win_SetErrorText( text );
Sys_ShowConsole( 1, true );
timeEndPeriod( 1 );
Sys_ShutdownInput();
GLimp_Shutdown();
extern idCVar com_productionMode;
if ( com_productionMode.GetInteger() == 0 ) {
// wait for the user to quit
while ( 1 ) {
if ( !GetMessage( &msg, NULL, 0, 0 ) ) {
common->Quit();
}
TranslateMessage( &msg );
DispatchMessage( &msg );
}
}
Sys_DestroyConsole();
exit (1);
}
/*
========================
Sys_Launch
========================
*/
void Sys_Launch( const char * path, idCmdArgs & args, void * data, unsigned int dataSize ) {
TCHAR szPathOrig[_MAX_PATH];
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
strcpy( szPathOrig, va( "\"%s\" %s", Sys_EXEPath(), (const char *)data ) );
if ( !CreateProcess( NULL, szPathOrig, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi ) ) {
idLib::Error( "Could not start process: '%s' ", szPathOrig );
return;
}
cmdSystem->AppendCommandText( "quit\n" );
}
/*
========================
Sys_GetCmdLine
========================
*/
const char * Sys_GetCmdLine() {
return sys_cmdline;
}
/*
========================
Sys_ReLaunch
========================
*/
void Sys_ReLaunch( void * data, const unsigned int dataSize ) {
TCHAR szPathOrig[MAX_PRINT_MSG];
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
strcpy( szPathOrig, va( "\"%s\" %s", Sys_EXEPath(), (const char *)data ) );
CloseHandle( hProcessMutex );
if ( !CreateProcess( NULL, szPathOrig, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi ) ) {
idLib::Error( "Could not start process: '%s' ", szPathOrig );
return;
}
cmdSystem->AppendCommandText( "quit\n" );
}
/*
==============
Sys_Quit
==============
*/
void Sys_Quit() {
timeEndPeriod( 1 );
Sys_ShutdownInput();
Sys_DestroyConsole();
ExitProcess( 0 );
}
/*
==============
Sys_Printf
==============
*/
#define MAXPRINTMSG 4096
void Sys_Printf( const char *fmt, ... ) {
char msg[MAXPRINTMSG];
va_list argptr;
va_start(argptr, fmt);
idStr::vsnPrintf( msg, MAXPRINTMSG-1, fmt, argptr );
va_end(argptr);
msg[sizeof(msg)-1] = '\0';
OutputDebugString( msg );
if ( win32.win_outputEditString.GetBool() && idLib::IsMainThread() ) {
Conbuf_AppendText( msg );
}
}
/*
==============
Sys_DebugPrintf
==============
*/
#define MAXPRINTMSG 4096
void Sys_DebugPrintf( const char *fmt, ... ) {
char msg[MAXPRINTMSG];
va_list argptr;
va_start( argptr, fmt );
idStr::vsnPrintf( msg, MAXPRINTMSG-1, fmt, argptr );
msg[ sizeof(msg)-1 ] = '\0';
va_end( argptr );
OutputDebugString( msg );
}
/*
==============
Sys_DebugVPrintf
==============
*/
void Sys_DebugVPrintf( const char *fmt, va_list arg ) {
char msg[MAXPRINTMSG];
idStr::vsnPrintf( msg, MAXPRINTMSG-1, fmt, arg );
msg[ sizeof(msg)-1 ] = '\0';
OutputDebugString( msg );
}
/*
==============
Sys_Sleep
==============
*/
void Sys_Sleep( int msec ) {
Sleep( msec );
}
/*
==============
Sys_ShowWindow
==============
*/
void Sys_ShowWindow( bool show ) {
::ShowWindow( win32.hWnd, show ? SW_SHOW : SW_HIDE );
}
/*
==============
Sys_IsWindowVisible
==============
*/
bool Sys_IsWindowVisible() {
return ( ::IsWindowVisible( win32.hWnd ) != 0 );
}
/*
==============
Sys_Mkdir
==============
*/
void Sys_Mkdir( const char *path ) {
_mkdir (path);
}
/*
=================
Sys_FileTimeStamp
=================
*/
ID_TIME_T Sys_FileTimeStamp( idFileHandle fp ) {
FILETIME writeTime;
GetFileTime( fp, NULL, NULL, &writeTime );
/*
FILETIME = number of 100-nanosecond ticks since midnight
1 Jan 1601 UTC. time_t = number of 1-second ticks since
midnight 1 Jan 1970 UTC. To translate, we subtract a
FILETIME representation of midnight, 1 Jan 1970 from the
time in question and divide by the number of 100-ns ticks
in one second.
*/
SYSTEMTIME base_st = {
1970, // wYear
1, // wMonth
0, // wDayOfWeek
1, // wDay
0, // wHour
0, // wMinute
0, // wSecond
0 // wMilliseconds
};
FILETIME base_ft;
SystemTimeToFileTime( &base_st, &base_ft );
LARGE_INTEGER itime;
itime.QuadPart = reinterpret_cast<LARGE_INTEGER&>( writeTime ).QuadPart;
itime.QuadPart -= reinterpret_cast<LARGE_INTEGER&>( base_ft ).QuadPart;
itime.QuadPart /= 10000000LL;
return itime.QuadPart;
}
/*
========================
Sys_Rmdir
========================
*/
bool Sys_Rmdir( const char *path ) {
return _rmdir( path ) == 0;
}
/*
========================
Sys_IsFileWritable
========================
*/
bool Sys_IsFileWritable( const char *path ) {
struct _stat st;
if ( _stat( path, &st ) == -1 ) {
return true;
}
return ( st.st_mode & S_IWRITE ) != 0;
}
/*
========================
Sys_IsFolder
========================
*/
sysFolder_t Sys_IsFolder( const char *path ) {
struct _stat buffer;
if ( _stat( path, &buffer ) < 0 ) {
return FOLDER_ERROR;
}
return ( buffer.st_mode & _S_IFDIR ) != 0 ? FOLDER_YES : FOLDER_NO;
}
/*
==============
Sys_Cwd
==============
*/
const char *Sys_Cwd() {
static char cwd[MAX_OSPATH];
_getcwd( cwd, sizeof( cwd ) - 1 );
cwd[MAX_OSPATH-1] = 0;
return cwd;
}
/*
==============
Sys_DefaultBasePath
==============
*/
const char *Sys_DefaultBasePath() {
return Sys_Cwd();
}
// Vista shit
typedef HRESULT (WINAPI * SHGetKnownFolderPath_t)( const GUID & rfid, DWORD dwFlags, HANDLE hToken, PWSTR *ppszPath );
// NOTE: FOLIDERID_SavedGames is already exported from in shell32.dll in Windows 7. We can only detect
// the compiler version, but that doesn't doesn't tell us which version of the OS we're linking against.
// This GUID value should never change, so we name it something other than FOLDERID_SavedGames to get
// around this problem.
const GUID FOLDERID_SavedGames_IdTech5 = { 0x4c5c32ff, 0xbb9d, 0x43b0, { 0xb5, 0xb4, 0x2d, 0x72, 0xe5, 0x4e, 0xaa, 0xa4 } };
/*
==============
Sys_DefaultSavePath
==============
*/
const char *Sys_DefaultSavePath() {
static char savePath[ MAX_PATH ];
memset( savePath, 0, MAX_PATH );
HMODULE hShell = LoadLibrary( "shell32.dll" );
if ( hShell ) {
SHGetKnownFolderPath_t SHGetKnownFolderPath = (SHGetKnownFolderPath_t)GetProcAddress( hShell, "SHGetKnownFolderPath" );
if ( SHGetKnownFolderPath ) {
wchar_t * path;
if ( SUCCEEDED( SHGetKnownFolderPath( FOLDERID_SavedGames_IdTech5, CSIDL_FLAG_CREATE | CSIDL_FLAG_PER_USER_INIT, 0, &path ) ) ) {
if ( wcstombs( savePath, path, MAX_PATH ) > MAX_PATH ) {
savePath[0] = 0;
}
CoTaskMemFree( path );
}
}
FreeLibrary( hShell );
}
if ( savePath[0] == 0 ) {
SHGetFolderPath( NULL, CSIDL_PERSONAL | CSIDL_FLAG_CREATE, NULL, SHGFP_TYPE_CURRENT, savePath );
strcat( savePath, "\\My Games" );
}
strcat( savePath, SAVE_PATH );
return savePath;
}
/*
==============
Sys_EXEPath
==============
*/
const char *Sys_EXEPath() {
static char exe[ MAX_OSPATH ];
GetModuleFileName( NULL, exe, sizeof( exe ) - 1 );
return exe;
}
/*
==============
Sys_ListFiles
==============
*/
int Sys_ListFiles( const char *directory, const char *extension, idStrList &list ) {
idStr search;
struct _finddata_t findinfo;
int findhandle;
int flag;
if ( !extension) {
extension = "";
}
// passing a slash as extension will find directories
if ( extension[0] == '/' && extension[1] == 0 ) {
extension = "";
flag = 0;
} else {
flag = _A_SUBDIR;
}
sprintf( search, "%s\\*%s", directory, extension );
// search
list.Clear();
findhandle = _findfirst( search, &findinfo );
if ( findhandle == -1 ) {
return -1;
}
do {
if ( flag ^ ( findinfo.attrib & _A_SUBDIR ) ) {
list.Append( findinfo.name );
}
} while ( _findnext( findhandle, &findinfo ) != -1 );
_findclose( findhandle );
return list.Num();
}
/*
================
Sys_GetClipboardData
================
*/
char *Sys_GetClipboardData() {
char *data = NULL;
char *cliptext;
if ( OpenClipboard( NULL ) != 0 ) {
HANDLE hClipboardData;
if ( ( hClipboardData = GetClipboardData( CF_TEXT ) ) != 0 ) {
if ( ( cliptext = (char *)GlobalLock( hClipboardData ) ) != 0 ) {
data = (char *)Mem_Alloc( GlobalSize( hClipboardData ) + 1, TAG_CRAP );
strcpy( data, cliptext );
GlobalUnlock( hClipboardData );
strtok( data, "\n\r\b" );
}
}
CloseClipboard();
}
return data;
}
/*
================
Sys_SetClipboardData
================
*/
void Sys_SetClipboardData( const char *string ) {
HGLOBAL HMem;
char *PMem;
// allocate memory block
HMem = (char *)::GlobalAlloc( GMEM_MOVEABLE | GMEM_DDESHARE, strlen( string ) + 1 );
if ( HMem == NULL ) {
return;
}
// lock allocated memory and obtain a pointer
PMem = (char *)::GlobalLock( HMem );
if ( PMem == NULL ) {
return;
}
// copy text into allocated memory block
lstrcpy( PMem, string );
// unlock allocated memory
::GlobalUnlock( HMem );
// open Clipboard
if ( !OpenClipboard( 0 ) ) {
::GlobalFree( HMem );
return;
}
// remove current Clipboard contents
EmptyClipboard();
// supply the memory handle to the Clipboard
SetClipboardData( CF_TEXT, HMem );
HMem = 0;
// close Clipboard
CloseClipboard();
}
/*
========================
ExecOutputFn
========================
*/
static void ExecOutputFn( const char * text ) {
idLib::Printf( text );
}
/*
========================
Sys_Exec
if waitMsec is INFINITE, completely block until the process exits
If waitMsec is -1, don't wait for the process to exit
Other waitMsec values will allow the workFn to be called at those intervals.
========================
*/
bool Sys_Exec( const char * appPath, const char * workingPath, const char * args,
execProcessWorkFunction_t workFn, execOutputFunction_t outputFn, const int waitMS,
unsigned int & exitCode ) {
exitCode = 0;
SECURITY_ATTRIBUTES secAttr;
secAttr.nLength = sizeof( SECURITY_ATTRIBUTES );
secAttr.bInheritHandle = TRUE;
secAttr.lpSecurityDescriptor = NULL;
HANDLE hStdOutRead;
HANDLE hStdOutWrite;
CreatePipe( &hStdOutRead, &hStdOutWrite, &secAttr, 0 );
SetHandleInformation( hStdOutRead, HANDLE_FLAG_INHERIT, 0 );
HANDLE hStdInRead;
HANDLE hStdInWrite;
CreatePipe( &hStdInRead, &hStdInWrite, &secAttr, 0 );
SetHandleInformation( hStdInWrite, HANDLE_FLAG_INHERIT, 0 );
STARTUPINFO si;
memset( &si, 0, sizeof( si ) );
si.cb = sizeof( si );
si.hStdError = hStdOutWrite;
si.hStdOutput = hStdOutWrite;
si.hStdInput = hStdInRead;
si.wShowWindow = FALSE;
si.dwFlags |= STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
PROCESS_INFORMATION pi;
memset ( &pi, 0, sizeof( pi ) );
if ( outputFn != NULL ) {
outputFn( va( "^2Executing Process: ^7%s\n^2working path: ^7%s\n^2args: ^7%s\n", appPath, workingPath, args ) );
} else {
outputFn = ExecOutputFn;
}
// we duplicate args here so we can concatenate the exe name and args into a single command line
const char * imageName = appPath;
char * cmdLine = NULL;
{
// if we have any args, we need to copy them to a new buffer because CreateProcess modifies
// the command line buffer.
if ( args != NULL ) {
if ( appPath != NULL ) {
int len = idStr::Length( args ) + idStr::Length( appPath ) + 1 /* for space */ + 1 /* for NULL terminator */ + 2 /* app quotes */;
cmdLine = (char*)Mem_Alloc( len, TAG_TEMP );
// note that we're putting quotes around the appPath here because when AAS2.exe gets an app path with spaces
// in the path "w:/zion/build/win32/Debug with Inlines/AAS2.exe" it gets more than one arg for the app name,
// which it most certainly should not, so I am assuming this is a side effect of using CreateProcess.
idStr::snPrintf( cmdLine, len, "\"%s\" %s", appPath, args );
} else {
int len = idStr::Length( args ) + 1;
cmdLine = (char*)Mem_Alloc( len, TAG_TEMP );
idStr::Copynz( cmdLine, args, len );
}
// the image name should always be NULL if we have command line arguments because it is already
// prefixed to the command line.
imageName = NULL;
}
}
BOOL result = CreateProcess( imageName, (LPSTR)cmdLine, NULL, NULL, TRUE, 0, NULL, workingPath, &si, &pi );
if ( result == FALSE ) {
TCHAR szBuf[1024];
LPVOID lpMsgBuf;
DWORD dw = GetLastError();
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
dw,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &lpMsgBuf,
0, NULL );
wsprintf( szBuf, "%d: %s", dw, lpMsgBuf );
if ( outputFn != NULL ) {
outputFn( szBuf );
}
LocalFree( lpMsgBuf );
if ( cmdLine != NULL ) {
Mem_Free( cmdLine );
}
return false;
} else if ( waitMS >= 0 ) { // if waitMS == -1, don't wait for process to exit
DWORD ec = 0;
DWORD wait = 0;
char buffer[ 4096 ];
for ( ; ; ) {
wait = WaitForSingleObject( pi.hProcess, waitMS );
GetExitCodeProcess( pi.hProcess, &ec );
DWORD bytesRead = 0;
DWORD bytesAvail = 0;
DWORD bytesLeft = 0;
BOOL ok = PeekNamedPipe( hStdOutRead, NULL, 0, NULL, &bytesAvail, &bytesLeft );
if ( ok && bytesAvail != 0 ) {
ok = ReadFile( hStdOutRead, buffer, sizeof( buffer ) - 3, &bytesRead, NULL );
if ( ok && bytesRead > 0 ) {
buffer[ bytesRead ] = '\0';
if ( outputFn != NULL ) {
int length = 0;
for ( int i = 0; buffer[i] != '\0'; i++ ) {
if ( buffer[i] != '\r' ) {
buffer[length++] = buffer[i];
}
}
buffer[length++] = '\0';
outputFn( buffer );
}
}
}
if ( ec != STILL_ACTIVE ) {
exitCode = ec;
break;
}
if ( workFn != NULL ) {
if ( !workFn() ) {
TerminateProcess( pi.hProcess, 0 );
break;
}
}
}
}
// this assumes that windows duplicates the command line string into the created process's
// environment space.
if ( cmdLine != NULL ) {
Mem_Free( cmdLine );
}
CloseHandle( pi.hProcess );
CloseHandle( pi.hThread );
CloseHandle( hStdOutRead );
CloseHandle( hStdOutWrite );
CloseHandle( hStdInRead );
CloseHandle( hStdInWrite );
return true;
}
/*
========================================================================
DLL Loading
========================================================================
*/
/*
=====================
Sys_DLL_Load
=====================
*/
int Sys_DLL_Load( const char *dllName ) {
HINSTANCE libHandle = LoadLibrary( dllName );
return (int)libHandle;
}
/*
=====================
Sys_DLL_GetProcAddress
=====================
*/
void *Sys_DLL_GetProcAddress( int dllHandle, const char *procName ) {
return GetProcAddress( (HINSTANCE)dllHandle, procName );
}
/*
=====================
Sys_DLL_Unload
=====================
*/
void Sys_DLL_Unload( int dllHandle ) {
if ( !dllHandle ) {
return;
}
if ( FreeLibrary( (HINSTANCE)dllHandle ) == 0 ) {
int lastError = GetLastError();
LPVOID lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER,
NULL,
lastError,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL
);
Sys_Error( "Sys_DLL_Unload: FreeLibrary failed - %s (%d)", lpMsgBuf, lastError );
}
}
/*
========================================================================
EVENT LOOP
========================================================================
*/
#define MAX_QUED_EVENTS 256
#define MASK_QUED_EVENTS ( MAX_QUED_EVENTS - 1 )
sysEvent_t eventQue[MAX_QUED_EVENTS];
int eventHead = 0;
int eventTail = 0;
/*
================
Sys_QueEvent
Ptr should either be null, or point to a block of data that can
be freed by the game later.
================
*/
void Sys_QueEvent( sysEventType_t type, int value, int value2, int ptrLength, void *ptr, int inputDeviceNum ) {
sysEvent_t * ev = &eventQue[ eventHead & MASK_QUED_EVENTS ];
if ( eventHead - eventTail >= MAX_QUED_EVENTS ) {
common->Printf("Sys_QueEvent: overflow\n");
// we are discarding an event, but don't leak memory
if ( ev->evPtr ) {
Mem_Free( ev->evPtr );
}
eventTail++;
}
eventHead++;
ev->evType = type;
ev->evValue = value;
ev->evValue2 = value2;
ev->evPtrLength = ptrLength;
ev->evPtr = ptr;
ev->inputDevice = inputDeviceNum;
}
/*
=============
Sys_PumpEvents
This allows windows to be moved during renderbump
=============
*/
void Sys_PumpEvents() {
MSG msg;
// pump the message loop
while( PeekMessage( &msg, NULL, 0, 0, PM_NOREMOVE ) ) {
if ( !GetMessage( &msg, NULL, 0, 0 ) ) {
common->Quit();
}
// save the msg time, because wndprocs don't have access to the timestamp
if ( win32.sysMsgTime && win32.sysMsgTime > (int)msg.time ) {
// don't ever let the event times run backwards
// common->Printf( "Sys_PumpEvents: win32.sysMsgTime (%i) > msg.time (%i)\n", win32.sysMsgTime, msg.time );
} else {
win32.sysMsgTime = msg.time;
}
TranslateMessage (&msg);
DispatchMessage (&msg);
}
}
/*
================
Sys_GenerateEvents
================
*/
void Sys_GenerateEvents() {
static int entered = false;
char *s;
if ( entered ) {
return;
}
entered = true;
// pump the message loop
Sys_PumpEvents();
// grab or release the mouse cursor if necessary
IN_Frame();
// check for console commands
s = Sys_ConsoleInput();
if ( s ) {
char *b;
int len;
len = strlen( s ) + 1;
b = (char *)Mem_Alloc( len, TAG_EVENTS );
strcpy( b, s );
Sys_QueEvent( SE_CONSOLE, 0, 0, len, b, 0 );
}
entered = false;
}
/*
================
Sys_ClearEvents
================
*/
void Sys_ClearEvents() {
eventHead = eventTail = 0;
}
/*
================
Sys_GetEvent
================
*/
sysEvent_t Sys_GetEvent() {
sysEvent_t ev;
// return if we have data
if ( eventHead > eventTail ) {
eventTail++;
return eventQue[ ( eventTail - 1 ) & MASK_QUED_EVENTS ];
}
// return the empty event
memset( &ev, 0, sizeof( ev ) );
return ev;
}
//================================================================
/*
=================
Sys_In_Restart_f
Restart the input subsystem
=================
*/
void Sys_In_Restart_f( const idCmdArgs &args ) {
Sys_ShutdownInput();
Sys_InitInput();
}
/*
================
Sys_AlreadyRunning
returns true if there is a copy of D3 running already
================
*/
bool Sys_AlreadyRunning() {
#ifndef DEBUG
if ( !win32.win_allowMultipleInstances.GetBool() ) {
hProcessMutex = ::CreateMutex( NULL, FALSE, "DOOM3" );
if ( ::GetLastError() == ERROR_ALREADY_EXISTS || ::GetLastError() == ERROR_ACCESS_DENIED ) {
return true;
}
}
#endif
return false;
}
/*
================
Sys_Init
The cvar system must already be setup
================
*/
#define OSR2_BUILD_NUMBER 1111
#define WIN98_BUILD_NUMBER 1998
void Sys_Init() {
CoInitialize( NULL );
// get WM_TIMER messages pumped every millisecond
// SetTimer( NULL, 0, 100, NULL );
cmdSystem->AddCommand( "in_restart", Sys_In_Restart_f, CMD_FL_SYSTEM, "restarts the input system" );
//
// Windows user name
//
win32.win_username.SetString( Sys_GetCurrentUser() );
//
// Windows version
//
win32.osversion.dwOSVersionInfoSize = sizeof( win32.osversion );
if ( !GetVersionEx( (LPOSVERSIONINFO)&win32.osversion ) )
Sys_Error( "Couldn't get OS info" );
if ( win32.osversion.dwMajorVersion < 4 ) {
Sys_Error( GAME_NAME " requires Windows version 4 (NT) or greater" );
}
if ( win32.osversion.dwPlatformId == VER_PLATFORM_WIN32s ) {
Sys_Error( GAME_NAME " doesn't run on Win32s" );
}
if( win32.osversion.dwPlatformId == VER_PLATFORM_WIN32_NT ) {
if( win32.osversion.dwMajorVersion <= 4 ) {
win32.sys_arch.SetString( "WinNT (NT)" );
} else if( win32.osversion.dwMajorVersion == 5 && win32.osversion.dwMinorVersion == 0 ) {
win32.sys_arch.SetString( "Win2K (NT)" );
} else if( win32.osversion.dwMajorVersion == 5 && win32.osversion.dwMinorVersion == 1 ) {
win32.sys_arch.SetString( "WinXP (NT)" );
} else if ( win32.osversion.dwMajorVersion == 6 ) {
win32.sys_arch.SetString( "Vista" );
} else {
win32.sys_arch.SetString( "Unknown NT variant" );
}
} else if( win32.osversion.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS ) {
if( win32.osversion.dwMajorVersion == 4 && win32.osversion.dwMinorVersion == 0 ) {
// Win95
if( win32.osversion.szCSDVersion[1] == 'C' ) {
win32.sys_arch.SetString( "Win95 OSR2 (95)" );
} else {
win32.sys_arch.SetString( "Win95 (95)" );
}
} else if( win32.osversion.dwMajorVersion == 4 && win32.osversion.dwMinorVersion == 10 ) {
// Win98
if( win32.osversion.szCSDVersion[1] == 'A' ) {
win32.sys_arch.SetString( "Win98SE (95)" );
} else {
win32.sys_arch.SetString( "Win98 (95)" );
}
} else if( win32.osversion.dwMajorVersion == 4 && win32.osversion.dwMinorVersion == 90 ) {
// WinMe
win32.sys_arch.SetString( "WinMe (95)" );
} else {
win32.sys_arch.SetString( "Unknown 95 variant" );
}
} else {
win32.sys_arch.SetString( "unknown Windows variant" );
}
//
// CPU type
//
if ( !idStr::Icmp( win32.sys_cpustring.GetString(), "detect" ) ) {
idStr string;
common->Printf( "%1.0f MHz ", Sys_ClockTicksPerSecond() / 1000000.0f );
win32.cpuid = Sys_GetCPUId();
string.Clear();
if ( win32.cpuid & CPUID_AMD ) {
string += "AMD CPU";
} else if ( win32.cpuid & CPUID_INTEL ) {
string += "Intel CPU";
} else if ( win32.cpuid & CPUID_UNSUPPORTED ) {
string += "unsupported CPU";
} else {
string += "generic CPU";
}
string += " with ";
if ( win32.cpuid & CPUID_MMX ) {
string += "MMX & ";
}
if ( win32.cpuid & CPUID_3DNOW ) {
string += "3DNow! & ";
}
if ( win32.cpuid & CPUID_SSE ) {
string += "SSE & ";
}
if ( win32.cpuid & CPUID_SSE2 ) {
string += "SSE2 & ";
}
if ( win32.cpuid & CPUID_SSE3 ) {
string += "SSE3 & ";
}
if ( win32.cpuid & CPUID_HTT ) {
string += "HTT & ";
}
string.StripTrailing( " & " );
string.StripTrailing( " with " );
win32.sys_cpustring.SetString( string );
} else {
common->Printf( "forcing CPU type to " );
idLexer src( win32.sys_cpustring.GetString(), idStr::Length( win32.sys_cpustring.GetString() ), "sys_cpustring" );
idToken token;
int id = CPUID_NONE;
while( src.ReadToken( &token ) ) {
if ( token.Icmp( "generic" ) == 0 ) {
id |= CPUID_GENERIC;
} else if ( token.Icmp( "intel" ) == 0 ) {
id |= CPUID_INTEL;
} else if ( token.Icmp( "amd" ) == 0 ) {
id |= CPUID_AMD;
} else if ( token.Icmp( "mmx" ) == 0 ) {
id |= CPUID_MMX;
} else if ( token.Icmp( "3dnow" ) == 0 ) {
id |= CPUID_3DNOW;
} else if ( token.Icmp( "sse" ) == 0 ) {
id |= CPUID_SSE;
} else if ( token.Icmp( "sse2" ) == 0 ) {
id |= CPUID_SSE2;
} else if ( token.Icmp( "sse3" ) == 0 ) {
id |= CPUID_SSE3;
} else if ( token.Icmp( "htt" ) == 0 ) {
id |= CPUID_HTT;
}
}
if ( id == CPUID_NONE ) {
common->Printf( "WARNING: unknown sys_cpustring '%s'\n", win32.sys_cpustring.GetString() );
id = CPUID_GENERIC;
}
win32.cpuid = (cpuid_t) id;
}
common->Printf( "%s\n", win32.sys_cpustring.GetString() );
common->Printf( "%d MB System Memory\n", Sys_GetSystemRam() );
common->Printf( "%d MB Video Memory\n", Sys_GetVideoRam() );
if ( ( win32.cpuid & CPUID_SSE2 ) == 0 ) {
common->Error( "SSE2 not supported!" );
}
win32.g_Joystick.Init();
}
/*
================
Sys_Shutdown
================
*/
void Sys_Shutdown() {
CoUninitialize();
}
/*
================
Sys_GetProcessorId
================
*/
cpuid_t Sys_GetProcessorId() {
return win32.cpuid;
}
/*
================
Sys_GetProcessorString
================
*/
const char *Sys_GetProcessorString() {
return win32.sys_cpustring.GetString();
}
//=======================================================================
//#define SET_THREAD_AFFINITY
/*
====================
Win_Frame
====================
*/
void Win_Frame() {
// if "viewlog" has been modified, show or hide the log console
if ( win32.win_viewlog.IsModified() ) {
win32.win_viewlog.ClearModified();
}
}
extern "C" { void _chkstk( int size ); };
void clrstk();
/*
====================
TestChkStk
====================
*/
void TestChkStk() {
int buffer[0x1000];
buffer[0] = 1;
}
/*
====================
HackChkStk
====================
*/
void HackChkStk() {
DWORD old;
VirtualProtect( _chkstk, 6, PAGE_EXECUTE_READWRITE, &old );
*(byte *)_chkstk = 0xe9;
*(int *)((int)_chkstk+1) = (int)clrstk - (int)_chkstk - 5;
TestChkStk();
}
/*
====================
GetExceptionCodeInfo
====================
*/
const char *GetExceptionCodeInfo( UINT code ) {
switch( code ) {
case EXCEPTION_ACCESS_VIOLATION: return "The thread tried to read from or write to a virtual address for which it does not have the appropriate access.";
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: return "The thread tried to access an array element that is out of bounds and the underlying hardware supports bounds checking.";
case EXCEPTION_BREAKPOINT: return "A breakpoint was encountered.";
case EXCEPTION_DATATYPE_MISALIGNMENT: return "The thread tried to read or write data that is misaligned on hardware that does not provide alignment. For example, 16-bit values must be aligned on 2-byte boundaries; 32-bit values on 4-byte boundaries, and so on.";
case EXCEPTION_FLT_DENORMAL_OPERAND: return "One of the operands in a floating-point operation is denormal. A denormal value is one that is too small to represent as a standard floating-point value.";
case EXCEPTION_FLT_DIVIDE_BY_ZERO: return "The thread tried to divide a floating-point value by a floating-point divisor of zero.";
case EXCEPTION_FLT_INEXACT_RESULT: return "The result of a floating-point operation cannot be represented exactly as a decimal fraction.";
case EXCEPTION_FLT_INVALID_OPERATION: return "This exception represents any floating-point exception not included in this list.";
case EXCEPTION_FLT_OVERFLOW: return "The exponent of a floating-point operation is greater than the magnitude allowed by the corresponding type.";
case EXCEPTION_FLT_STACK_CHECK: return "The stack overflowed or underflowed as the result of a floating-point operation.";
case EXCEPTION_FLT_UNDERFLOW: return "The exponent of a floating-point operation is less than the magnitude allowed by the corresponding type.";
case EXCEPTION_ILLEGAL_INSTRUCTION: return "The thread tried to execute an invalid instruction.";
case EXCEPTION_IN_PAGE_ERROR: return "The thread tried to access a page that was not present, and the system was unable to load the page. For example, this exception might occur if a network connection is lost while running a program over the network.";
case EXCEPTION_INT_DIVIDE_BY_ZERO: return "The thread tried to divide an integer value by an integer divisor of zero.";
case EXCEPTION_INT_OVERFLOW: return "The result of an integer operation caused a carry out of the most significant bit of the result.";
case EXCEPTION_INVALID_DISPOSITION: return "An exception handler returned an invalid disposition to the exception dispatcher. Programmers using a high-level language such as C should never encounter this exception.";
case EXCEPTION_NONCONTINUABLE_EXCEPTION: return "The thread tried to continue execution after a noncontinuable exception occurred.";
case EXCEPTION_PRIV_INSTRUCTION: return "The thread tried to execute an instruction whose operation is not allowed in the current machine mode.";
case EXCEPTION_SINGLE_STEP: return "A trace trap or other single-instruction mechanism signaled that one instruction has been executed.";
case EXCEPTION_STACK_OVERFLOW: return "The thread used up its stack.";
default: return "Unknown exception";
}
}
/*
====================
EmailCrashReport
emailer originally from Raven/Quake 4
====================
*/
void EmailCrashReport( LPSTR messageText ) {
static int lastEmailTime = 0;
if ( Sys_Milliseconds() < lastEmailTime + 10000 ) {
return;
}
lastEmailTime = Sys_Milliseconds();
HINSTANCE mapi = LoadLibrary( "MAPI32.DLL" );
if( mapi ) {
LPMAPISENDMAIL MAPISendMail = ( LPMAPISENDMAIL )GetProcAddress( mapi, "MAPISendMail" );
if( MAPISendMail ) {
MapiRecipDesc toProgrammers =
{
0, // ulReserved
MAPI_TO, // ulRecipClass
"DOOM 3 Crash", // lpszName
"SMTP:programmers@idsoftware.com", // lpszAddress
0, // ulEIDSize
0 // lpEntry
};
MapiMessage message = {};
message.lpszSubject = "DOOM 3 Fatal Error";
message.lpszNoteText = messageText;
message.nRecipCount = 1;
message.lpRecips = &toProgrammers;
MAPISendMail(
0, // LHANDLE lhSession
0, // ULONG ulUIParam
&message, // lpMapiMessage lpMessage
MAPI_DIALOG, // FLAGS flFlags
0 // ULONG ulReserved
);
}
FreeLibrary( mapi );
}
}
int Sys_FPU_PrintStateFlags( char *ptr, int ctrl, int stat, int tags, int inof, int inse, int opof, int opse );
/*
====================
_except_handler
====================
*/
EXCEPTION_DISPOSITION __cdecl _except_handler( struct _EXCEPTION_RECORD *ExceptionRecord, void * EstablisherFrame,
struct _CONTEXT *ContextRecord, void * DispatcherContext ) {
static char msg[ 8192 ];
char FPUFlags[2048];
Sys_FPU_PrintStateFlags( FPUFlags, ContextRecord->FloatSave.ControlWord,
ContextRecord->FloatSave.StatusWord,
ContextRecord->FloatSave.TagWord,
ContextRecord->FloatSave.ErrorOffset,
ContextRecord->FloatSave.ErrorSelector,
ContextRecord->FloatSave.DataOffset,
ContextRecord->FloatSave.DataSelector );
sprintf( msg,
"Please describe what you were doing when DOOM 3 crashed!\n"
"If this text did not pop into your email client please copy and email it to programmers@idsoftware.com\n"
"\n"
"-= FATAL EXCEPTION =-\n"
"\n"
"%s\n"
"\n"
"0x%x at address 0x%08p\n"
"\n"
"%s\n"
"\n"
"EAX = 0x%08x EBX = 0x%08x\n"
"ECX = 0x%08x EDX = 0x%08x\n"
"ESI = 0x%08x EDI = 0x%08x\n"
"EIP = 0x%08x ESP = 0x%08x\n"
"EBP = 0x%08x EFL = 0x%08x\n"
"\n"
"CS = 0x%04x\n"
"SS = 0x%04x\n"
"DS = 0x%04x\n"
"ES = 0x%04x\n"
"FS = 0x%04x\n"
"GS = 0x%04x\n"
"\n"
"%s\n",
com_version.GetString(),
ExceptionRecord->ExceptionCode,
ExceptionRecord->ExceptionAddress,
GetExceptionCodeInfo( ExceptionRecord->ExceptionCode ),
ContextRecord->Eax, ContextRecord->Ebx,
ContextRecord->Ecx, ContextRecord->Edx,
ContextRecord->Esi, ContextRecord->Edi,
ContextRecord->Eip, ContextRecord->Esp,
ContextRecord->Ebp, ContextRecord->EFlags,
ContextRecord->SegCs,
ContextRecord->SegSs,
ContextRecord->SegDs,
ContextRecord->SegEs,
ContextRecord->SegFs,
ContextRecord->SegGs,
FPUFlags
);
EmailCrashReport( msg );
common->FatalError( msg );
// Tell the OS to restart the faulting instruction
return ExceptionContinueExecution;
}
#define TEST_FPU_EXCEPTIONS /* FPU_EXCEPTION_INVALID_OPERATION | */ \
/* FPU_EXCEPTION_DENORMALIZED_OPERAND | */ \
/* FPU_EXCEPTION_DIVIDE_BY_ZERO | */ \
/* FPU_EXCEPTION_NUMERIC_OVERFLOW | */ \
/* FPU_EXCEPTION_NUMERIC_UNDERFLOW | */ \
/* FPU_EXCEPTION_INEXACT_RESULT | */ \
0
/*
==================
WinMain
==================
*/
int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow ) {
const HCURSOR hcurSave = ::SetCursor( LoadCursor( 0, IDC_WAIT ) );
Sys_SetPhysicalWorkMemory( 192 << 20, 1024 << 20 );
Sys_GetCurrentMemoryStatus( exeLaunchMemoryStats );
#if 0
DWORD handler = (DWORD)_except_handler;
__asm
{ // Build EXCEPTION_REGISTRATION record:
push handler // Address of handler function
push FS:[0] // Address of previous handler
mov FS:[0],ESP // Install new EXECEPTION_REGISTRATION
}
#endif
win32.hInstance = hInstance;
idStr::Copynz( sys_cmdline, lpCmdLine, sizeof( sys_cmdline ) );
// done before Com/Sys_Init since we need this for error output
Sys_CreateConsole();
// no abort/retry/fail errors
SetErrorMode( SEM_FAILCRITICALERRORS );
for ( int i = 0; i < MAX_CRITICAL_SECTIONS; i++ ) {
InitializeCriticalSection( &win32.criticalSections[i] );
}
// make sure the timer is high precision, otherwise
// NT gets 18ms resolution
timeBeginPeriod( 1 );
// get the initial time base
Sys_Milliseconds();
#ifdef DEBUG
// disable the painfully slow MS heap check every 1024 allocs
_CrtSetDbgFlag( 0 );
#endif
// Sys_FPU_EnableExceptions( TEST_FPU_EXCEPTIONS );
Sys_FPU_SetPrecision( FPU_PRECISION_DOUBLE_EXTENDED );
common->Init( 0, NULL, lpCmdLine );
#if TEST_FPU_EXCEPTIONS != 0
common->Printf( Sys_FPU_GetState() );
#endif
if ( win32.win_notaskkeys.GetInteger() ) {
DisableTaskKeys( TRUE, FALSE, /*( win32.win_notaskkeys.GetInteger() == 2 )*/ FALSE );
}
// hide or show the early console as necessary
if ( win32.win_viewlog.GetInteger() ) {
Sys_ShowConsole( 1, true );
} else {
Sys_ShowConsole( 0, false );
}
#ifdef SET_THREAD_AFFINITY
// give the main thread an affinity for the first cpu
SetThreadAffinityMask( GetCurrentThread(), 1 );
#endif
::SetCursor( hcurSave );
::SetFocus( win32.hWnd );
// main game loop
while( 1 ) {
Win_Frame();
#ifdef DEBUG
Sys_MemFrame();
#endif
// set exceptions, even if some crappy syscall changes them!
Sys_FPU_EnableExceptions( TEST_FPU_EXCEPTIONS );
// run the game
common->Frame();
}
// never gets here
return 0;
}
/*
====================
clrstk
I tried to get the run time to call this at every function entry, but
====================
*/
static int parmBytes;
__declspec( naked ) void clrstk() {
// eax = bytes to add to stack
__asm {
mov [parmBytes],eax
neg eax ; compute new stack pointer in eax
add eax,esp
add eax,4
xchg eax,esp
mov eax,dword ptr [eax] ; copy the return address
push eax
; clear to zero
push edi
push ecx
mov edi,esp
add edi,12
mov ecx,[parmBytes]
shr ecx,2
xor eax,eax
cld
rep stosd
pop ecx
pop edi
ret
}
}
/*
==================
idSysLocal::OpenURL
==================
*/
void idSysLocal::OpenURL( const char *url, bool doexit ) {
static bool doexit_spamguard = false;
HWND wnd;
if (doexit_spamguard) {
common->DPrintf( "OpenURL: already in an exit sequence, ignoring %s\n", url );
return;
}
common->Printf("Open URL: %s\n", url);
if ( !ShellExecute( NULL, "open", url, NULL, NULL, SW_RESTORE ) ) {
common->Error( "Could not open url: '%s' ", url );
return;
}
wnd = GetForegroundWindow();
if ( wnd ) {
ShowWindow( wnd, SW_MAXIMIZE );
}
if ( doexit ) {
doexit_spamguard = true;
cmdSystem->BufferCommandText( CMD_EXEC_APPEND, "quit\n" );
}
}
/*
==================
idSysLocal::StartProcess
==================
*/
void idSysLocal::StartProcess( const char *exePath, bool doexit ) {
TCHAR szPathOrig[_MAX_PATH];
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
strncpy( szPathOrig, exePath, _MAX_PATH );
if( !CreateProcess( NULL, szPathOrig, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi ) ) {
common->Error( "Could not start process: '%s' ", szPathOrig );
return;
}
if ( doexit ) {
cmdSystem->BufferCommandText( CMD_EXEC_APPEND, "quit\n" );
}
}
/*
==================
Sys_SetFatalError
==================
*/
void Sys_SetFatalError( const char *error ) {
}
/*
================
Sys_SetLanguageFromSystem
================
*/
extern idCVar sys_lang;
void Sys_SetLanguageFromSystem() {
sys_lang.SetString( Sys_DefaultLanguage() );
}
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