ref: 02611e064eceed8d8cda8cc4d6e60f8f1833ea72
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; }