mirror of
https://github.com/dhewm/dhewm3.git
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146 lines
4.1 KiB
C++
146 lines
4.1 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code 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. See the
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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 Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 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 Source Code. If not, please request a copy in writing from id Software at the address below.
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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.
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===========================================================================
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*/
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#include "sys/platform.h"
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#include "sys/win32/win_local.h"
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#include <lmerr.h>
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#include <lmcons.h>
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#include <lmwksta.h>
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#include <errno.h>
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#include <fcntl.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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================
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Sys_GetSystemRam
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returns amount of physical memory in MB
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================
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*/
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int Sys_GetSystemRam( void ) {
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MEMORYSTATUSEX statex;
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statex.dwLength = sizeof ( statex );
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GlobalMemoryStatusEx (&statex);
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int physRam = statex.ullTotalPhys / ( 1024 * 1024 );
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// HACK: For some reason, ullTotalPhys is sometimes off by a meg or two, so we round up to the nearest 16 megs
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physRam = ( physRam + 8 ) & ~15;
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return physRam;
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}
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/*
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================
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Sys_GetDriveFreeSpace
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returns in megabytes
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================
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*/
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int Sys_GetDriveFreeSpace( const char *path ) {
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DWORDLONG lpFreeBytesAvailable;
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DWORDLONG lpTotalNumberOfBytes;
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DWORDLONG lpTotalNumberOfFreeBytes;
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int ret = 26;
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//FIXME: see why this is failing on some machines
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if ( ::GetDiskFreeSpaceEx( path, (PULARGE_INTEGER)&lpFreeBytesAvailable, (PULARGE_INTEGER)&lpTotalNumberOfBytes, (PULARGE_INTEGER)&lpTotalNumberOfFreeBytes ) ) {
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ret = ( double )( lpFreeBytesAvailable ) / ( 1024.0 * 1024.0 );
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}
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return ret;
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}
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/*
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================
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Sys_GetCurrentMemoryStatus
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returns OS mem info
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all values are in kB except the memoryload
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================
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*/
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void Sys_GetCurrentMemoryStatus( sysMemoryStats_t &stats ) {
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MEMORYSTATUSEX statex;
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unsigned __int64 work;
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memset( &statex, 0, sizeof( statex ) );
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statex.dwLength = sizeof( statex );
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GlobalMemoryStatusEx( &statex );
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memset( &stats, 0, sizeof( stats ) );
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stats.memoryLoad = statex.dwMemoryLoad;
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work = statex.ullTotalPhys >> 20;
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stats.totalPhysical = *(int*)&work;
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work = statex.ullAvailPhys >> 20;
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stats.availPhysical = *(int*)&work;
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work = statex.ullAvailPageFile >> 20;
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stats.availPageFile = *(int*)&work;
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work = statex.ullTotalPageFile >> 20;
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stats.totalPageFile = *(int*)&work;
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work = statex.ullTotalVirtual >> 20;
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stats.totalVirtual = *(int*)&work;
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work = statex.ullAvailVirtual >> 20;
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stats.availVirtual = *(int*)&work;
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work = statex.ullAvailExtendedVirtual >> 20;
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stats.availExtendedVirtual = *(int*)&work;
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}
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/*
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================
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Sys_LockMemory
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================
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*/
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bool Sys_LockMemory( void *ptr, int bytes ) {
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return ( VirtualLock( ptr, (SIZE_T)bytes ) != FALSE );
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}
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/*
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================
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Sys_UnlockMemory
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================
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*/
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bool Sys_UnlockMemory( void *ptr, int bytes ) {
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return ( VirtualUnlock( ptr, (SIZE_T)bytes ) != FALSE );
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}
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/*
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================
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Sys_SetPhysicalWorkMemory
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================
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*/
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void Sys_SetPhysicalWorkMemory( int minBytes, int maxBytes ) {
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::SetProcessWorkingSetSize( GetCurrentProcess(), minBytes, maxBytes );
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}
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