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111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/*
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* Memory Manager Information and Test driver
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*
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* Copyright 2006 Aleksey Bragin <alekset@reactos.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; see the file COPYING.LIB.
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* If not, write to the Free Software Foundation,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* INCLUDES *******************************************************************/
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#include <ddk/ntddk.h>
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#include "memtest.h"
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//#define NDEBUG
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#include <debug.h>
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HANDLE MonitorThreadHandle;
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/* FUNCTIONS ***********************************************************/
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static VOID NTAPI
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MonitorThread(PVOID Ignored)
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{
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SYSTEM_PERFORMANCE_INFORMATION PerformanceInfo;
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ULONG Length;
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LARGE_INTEGER Interval, SystemTime;
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/* Main loop */
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while (TRUE)
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{
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Interval.QuadPart = -300 * 10000; // 300 ms
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/* Query information */
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if (ZwQuerySystemInformation(SystemPerformanceInformation,
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(PVOID) &PerformanceInfo,
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sizeof(SYSTEM_PERFORMANCE_INFORMATION),
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&Length) != NO_ERROR)
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{
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break;
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}
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/* Query current system time */
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KeQuerySystemTime(&SystemTime);
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DbgPrint("%I64d;%d;%d\n", SystemTime.QuadPart,
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PerformanceInfo.CommittedPages, PerformanceInfo.AvailablePages);
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/* Wait for a bit. */
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KeDelayExecutionThread(KernelMode, FALSE, &Interval);
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}
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DPRINT("Finishing monitoring thread.\n");
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PsTerminateSystemThread(0);
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}
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VOID
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StartMemoryMonitor()
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{
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NTSTATUS Status;
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Status = PsCreateSystemThread(
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&MonitorThreadHandle,
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THREAD_ALL_ACCESS,
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NULL,
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NULL,
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NULL,
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MonitorThread,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Failed to start a monitoring thread\n");
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return;
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}
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}
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/* PUBLIC FUNCTIONS ***********************************************************/
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/*
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* DriverEntry
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*/
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NTSTATUS
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NTAPI
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DriverEntry(PDRIVER_OBJECT DriverObject,
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PUNICODE_STRING RegistryPath)
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{
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DbgPrint("\n===============================================\n Memory Manager Information and Test driver\n");
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DbgPrint("Time;Memory pages allocated;Memory pages free\n");
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StartMemoryMonitor();
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return STATUS_SUCCESS;
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}
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