reactos/reactos/ntoskrnl/mm/wset.c
Casper Hornstrup 17c0b5798e Reverted latest changes.
svn path=/trunk/; revision=3473
2002-09-08 10:23:54 +00:00

67 lines
2 KiB
C

/*
* ReactOS kernel
* Copyright (C) 1998, 1999, 2000, 2001 ReactOS Team
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: wset.c,v 1.16 2002/09/08 10:23:37 chorns Exp $
*
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/mm/wset.c
* PURPOSE: Manages working sets
* PROGRAMMER: David Welch (welch@cwcom.net)
* UPDATE HISTORY:
* Created 22/05/98
*/
/* INCLUDES *****************************************************************/
#include <ddk/ntddk.h>
#include <internal/mm.h>
#include <internal/ps.h>
#include <ntos/minmax.h>
#define NDEBUG
#include <internal/debug.h>
/* FUNCTIONS *****************************************************************/
NTSTATUS
MmTrimUserMemory(ULONG Target, ULONG Priority, PULONG NrFreedPages)
{
PHYSICAL_ADDRESS CurrentPhysicalAddress;
PHYSICAL_ADDRESS NextPhysicalAddress;
NTSTATUS Status;
(*NrFreedPages) = 0;
CurrentPhysicalAddress = MmGetLRUFirstUserPage();
while (CurrentPhysicalAddress.QuadPart != 0 && Target > 0)
{
NextPhysicalAddress = MmGetLRUNextUserPage(CurrentPhysicalAddress);
Status = MmPageOutPhysicalAddress(CurrentPhysicalAddress);
if (NT_SUCCESS(Status))
{
DPRINT("Succeeded\n");
Target--;
(*NrFreedPages)++;
}
CurrentPhysicalAddress = NextPhysicalAddress;
}
return(STATUS_SUCCESS);
}