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Quack 3: Arena
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Literally A Penguin
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215
win32/q_shwin.c
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215
win32/q_shwin.c
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/*
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Copyright (C) 1997-2001 Id Software, Inc.
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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 the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "../qcommon/qcommon.h"
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#include "winquake.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <direct.h>
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#include <io.h>
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#include <conio.h>
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//===============================================================================
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int hunkcount;
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byte *membase;
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int hunkmaxsize;
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int cursize;
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#define VIRTUAL_ALLOC
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void *Hunk_Begin (int maxsize)
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{
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// reserve a huge chunk of memory, but don't commit any yet
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cursize = 0;
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hunkmaxsize = maxsize;
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#ifdef VIRTUAL_ALLOC
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membase = VirtualAlloc (NULL, maxsize, MEM_RESERVE, PAGE_NOACCESS);
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#else
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membase = malloc (maxsize);
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memset (membase, 0, maxsize);
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#endif
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if (!membase)
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Sys_Error ("VirtualAlloc reserve failed");
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return (void *)membase;
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}
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void *Hunk_Alloc (int size)
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{
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void *buf;
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// round to cacheline
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size = (size+31)&~31;
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#ifdef VIRTUAL_ALLOC
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// commit pages as needed
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// buf = VirtualAlloc (membase+cursize, size, MEM_COMMIT, PAGE_READWRITE);
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buf = VirtualAlloc (membase, cursize+size, MEM_COMMIT, PAGE_READWRITE);
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if (!buf)
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{
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FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &buf, 0, NULL);
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Sys_Error ("VirtualAlloc commit failed.\n%s", buf);
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}
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#endif
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cursize += size;
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if (cursize > hunkmaxsize)
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Sys_Error ("Hunk_Alloc overflow");
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return (void *)(membase+cursize-size);
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}
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int Hunk_End (void)
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{
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// free the remaining unused virtual memory
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#if 0
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void *buf;
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// write protect it
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buf = VirtualAlloc (membase, cursize, MEM_COMMIT, PAGE_READONLY);
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if (!buf)
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Sys_Error ("VirtualAlloc commit failed");
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#endif
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hunkcount++;
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//Com_Printf ("hunkcount: %i\n", hunkcount);
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return cursize;
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}
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void Hunk_Free (void *base)
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{
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if ( base )
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#ifdef VIRTUAL_ALLOC
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VirtualFree (base, 0, MEM_RELEASE);
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#else
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free (base);
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#endif
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hunkcount--;
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}
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//===============================================================================
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/*
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================
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Sys_Milliseconds
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================
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*/
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int curtime;
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int Sys_Milliseconds (void)
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{
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static int base;
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static qboolean initialized = false;
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if (!initialized)
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{ // let base retain 16 bits of effectively random data
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base = timeGetTime() & 0xffff0000;
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initialized = true;
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}
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curtime = timeGetTime() - base;
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return curtime;
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}
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void Sys_Mkdir (char *path)
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{
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_mkdir (path);
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}
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//============================================
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char findbase[MAX_OSPATH];
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char findpath[MAX_OSPATH];
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int findhandle;
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static qboolean CompareAttributes( unsigned found, unsigned musthave, unsigned canthave )
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{
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if ( ( found & _A_RDONLY ) && ( canthave & SFF_RDONLY ) )
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return false;
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if ( ( found & _A_HIDDEN ) && ( canthave & SFF_HIDDEN ) )
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return false;
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if ( ( found & _A_SYSTEM ) && ( canthave & SFF_SYSTEM ) )
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return false;
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if ( ( found & _A_SUBDIR ) && ( canthave & SFF_SUBDIR ) )
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return false;
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if ( ( found & _A_ARCH ) && ( canthave & SFF_ARCH ) )
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return false;
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if ( ( musthave & SFF_RDONLY ) && !( found & _A_RDONLY ) )
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return false;
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if ( ( musthave & SFF_HIDDEN ) && !( found & _A_HIDDEN ) )
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return false;
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if ( ( musthave & SFF_SYSTEM ) && !( found & _A_SYSTEM ) )
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return false;
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if ( ( musthave & SFF_SUBDIR ) && !( found & _A_SUBDIR ) )
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return false;
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if ( ( musthave & SFF_ARCH ) && !( found & _A_ARCH ) )
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return false;
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return true;
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}
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char *Sys_FindFirst (char *path, unsigned musthave, unsigned canthave )
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{
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struct _finddata_t findinfo;
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if (findhandle)
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Sys_Error ("Sys_BeginFind without close");
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findhandle = 0;
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COM_FilePath (path, findbase);
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findhandle = _findfirst (path, &findinfo);
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if (findhandle == -1)
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return NULL;
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if ( !CompareAttributes( findinfo.attrib, musthave, canthave ) )
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return NULL;
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Com_sprintf (findpath, sizeof(findpath), "%s/%s", findbase, findinfo.name);
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return findpath;
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}
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char *Sys_FindNext ( unsigned musthave, unsigned canthave )
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{
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struct _finddata_t findinfo;
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if (findhandle == -1)
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return NULL;
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if (_findnext (findhandle, &findinfo) == -1)
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return NULL;
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if ( !CompareAttributes( findinfo.attrib, musthave, canthave ) )
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return NULL;
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Com_sprintf (findpath, sizeof(findpath), "%s/%s", findbase, findinfo.name);
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return findpath;
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}
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void Sys_FindClose (void)
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{
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if (findhandle != -1)
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_findclose (findhandle);
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findhandle = 0;
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}
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//============================================
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