protected void Page_Load(object sender, EventArgs e)
{
try
{
objPageManager = new PageManager();
PageTable objTable = null;
objTable = objPageManager.FetchPage(1);
if (objTable.Rows.Count > 0)
{
lblCompanyProfile.Text = objTable.Rows[0][PageTable.PAGECONTENT_FIELD].ToString();
}
BindHeaders(objTable.Rows[0][PageTable.PAGEMETAKEYWORDS_FIELD].ToString(), objTable.Rows[0][PageTable.PAGEMETADESCRIPTION_FIELD].ToString());
Page.Title = objTable.Rows[0][PageTable.PAGETITLE_FIELD].ToString();
objTable = objPageManager.FetchPage(2);
if (objTable.Rows.Count > 0)
{
lblJobPositions.Text = objTable.Rows[0][PageTable.PAGECONTENT_FIELD].ToString();
}
loadAllService();
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// Creates a new instance of the host mapped memory manager.
/// </summary>
/// <param name="backingMemory">Physical backing memory where virtual memory will be mapped to</param>
/// <param name="addressSpaceSize">Size of the address space</param>
/// <param name="unsafeMode">True if unmanaged access should not be masked (unsafe), false otherwise.</param>
/// <param name="invalidAccessHandler">Optional function to handle invalid memory accesses</param>
public MemoryManagerHostMapped(MemoryBlock backingMemory, ulong addressSpaceSize, bool unsafeMode, InvalidAccessHandler invalidAccessHandler = null)
{
_backingMemory = backingMemory;
_pageTable = new PageTable <ulong>();
_invalidAccessHandler = invalidAccessHandler;
_unsafeMode = unsafeMode;
_addressSpaceSize = addressSpaceSize;
ulong asSize = PageSize;
int asBits = PageBits;
while (asSize < addressSpaceSize)
{
asSize <<= 1;
asBits++;
}
AddressSpaceBits = asBits;
_pageBitmap = new ulong[1 << (AddressSpaceBits - (PageBits + PageToPteShift))];
MemoryAllocationFlags asFlags = MemoryAllocationFlags.Reserve | MemoryAllocationFlags.ViewCompatible;
_addressSpace = new MemoryBlock(asSize, asFlags);
_addressSpaceMirror = new MemoryBlock(asSize, asFlags | MemoryAllocationFlags.ForceWindows4KBViewMapping);
Tracking = new MemoryTracking(this, PageSize, invalidAccessHandler);
_memoryEh = new MemoryEhMeilleure(_addressSpace, Tracking);
}
public static void Setup()
{
Screen.Clear();
Screen.Color = 0x0E;
Screen.SetCursor(24, 0);
Screen.Write('1');
Multiboot.Setup();
Screen.SetCursor(24, 1);
Screen.Write('2');
PIC.Setup();
Screen.SetCursor(24, 2);
Screen.Write('3');
GDT.Setup();
Screen.SetCursor(24, 3);
Screen.Write('4');
IDT.Setup();
Screen.SetCursor(24, 4);
Screen.Write('5');
PageFrameAllocator.Setup();
Screen.SetCursor(24, 5);
Screen.Write('6');
PageTable.Setup();
Screen.SetCursor(24, 6);
Screen.Write('7');
VirtualPageAllocator.Setup();
Screen.SetCursor(24, 7);
Screen.Write('8');
Screen.SetCursor(24, 8);
ProcessManager.Setup();
Screen.Write('9');
Screen.SetCursor(24, 9);
TaskManager.Setup();
Screen.Write('A');
Screen.SetCursor(24, 10);
}
private void loadAllService()
{
PageManager objPageManager1 = new PageManager();
PageTable dtPage1 = new PageTable();
dtPage1 = objPageManager1.FetchServicePages();
}
public void loadProcess(int pId, int textSegmentSize, int dataSegmentSize)
{
int numTextSegmentPages = (int)Math.Ceiling((double)textSegmentSize / pageSize);
int numDataSegmentPages = (int)Math.Ceiling((double)dataSegmentSize / pageSize);
//Create page tables for each segment of the process.
PageTable textTable = new PageTable("text", numTextSegmentPages);
PageTable dataTable = new PageTable("data", numDataSegmentPages);
//Create an inner page to hold the two page tables.
InnerPage innerPage;
//Find a frame for each text segment and update the page table and the frame table.
for (int i = 0; i < numTextSegmentPages; ++i)
{
for (int j = 0; j < numFrames; ++j)
{
//See if frame is empty.
if (string.IsNullOrEmpty(frameTable[j]))
{
//Assign the page to an empty frame.
frameTable[j] = "P" + pId.ToString() + " Text Page " + i.ToString();
physicalMListRowData[j].frameInfoXAML = frameTable[j];
textTable.Table[i] = j;
break;
}
}
}
//Find a frame for each data segment and update the page table and the frame table.
for (int i = 0; i < numDataSegmentPages; ++i)
{
for (int j = 0; j < numFrames; ++j)
{
//See if frame is empty.
if (string.IsNullOrEmpty(frameTable[j]))
{
//Assign the page to an empty frame.
frameTable[j] = "P" + pId.ToString() + " Data Page " + i.ToString();
physicalMListRowData[j].frameInfoXAML = frameTable[j];
dataTable.Table[i] = j;
break;
}
}
}
//For GUI
String textKey = pId.ToString() + "0";
String dataKey = pId.ToString() + "1";
makeRows(textKey, textTable);
makeRows(dataKey, dataTable);
//End for GUI
//Create and populate the inner page.
innerPage = new InnerPage(pId, textTable, dataTable);
//Add the inner page to the outer page table.
outerPageTable.Add(pId, innerPage);
}
public void Test()
{
PageTable t = new PageTable();
t.Total = 10;
Assert.Equal(10, t.Total);
}
/// <summary>
/// Interpret the pointer as a stack pointer to determine the stack
/// height.
/// </summary>
/// <param name="stackPointer">Pointer into the stack.</param>
/// <returns>The stack height of the location pointed to by the
/// argument.</returns>
internal StackHeight(UIntPtr stackPointer)
{
VTable.Assert(stackPointer == UIntPtr.Zero ||
(PageTable.Type(PageTable.Page(stackPointer))
== PageType.Stack));
this.stackPointer = stackPointer;
}
private PageTable GetOrCreateTable(int directory_index)
{
if (Directory[directory_index] == null)
{
Directory[directory_index] = new PageTable(directory_index);
}
return(Directory[directory_index]);
}
public VirtualMachine(VirtualMachine oldVirtualMachine)
{
this.PC = oldVirtualMachine.PC;
this.SP = oldVirtualMachine.SP;
this.IsFinished = oldVirtualMachine.IsFinished;
this.Name = oldVirtualMachine.Name;
this.pg = new PageTable(oldVirtualMachine.pg, oldVirtualMachine.PagesNumber);
this.rm = oldVirtualMachine.rm;
}
public void PageTableTest1()
{
List <PageTableEntry> entries = new List <PageTableEntry>();
entries.Add(new PageTableEntry(0, 0, 0, false, new MemoryPage(0, 0, "Unit Test", -1)));
PageTable t = new PageTable(0, entries);
Assert.IsTrue(t is PageTable && t.Entries.Count == 1);
}
private void RequestPhysicalMemory(uint address, uint size)
{
// Map physical memory space to virtual memory space
for (uint at = address; at < address + size; at += 4096)
{
PageTable.MapVirtualAddressToPhysical(at, at);
}
//return new Memory(new IntPtr(address), size);
}
public void SwapOutTest()
{
PhysicalMemory mem = new PhysicalMemory(10);
PageTable table = new PageTable(0);
MemoryPage m = new MemoryPage(0, 0, "Unit Test", -1);
mem.AddPage(m, 0);
m.SwapOut(0, 0);
Assert.IsTrue(table.Entries[0].SwappedOut);
}
/// <summary>
/// Requests a block of memory from the kernel
/// </summary>
/// <param name="address">The address.</param>
/// <param name="size">The size.</param>
/// <returns></returns>
public override BaseMemory RequestPhysicalMemory(uint address, uint size)
{
// Map physical memory space to virtual memory space
for (uint at = address; at < address + size; at += 4096)
{
PageTable.MapVirtualAddressToPhysical(at, at);
}
return(new Memory(address, size));
}
/// <summary>
/// Gets a block of memory from the kernel
/// </summary>
/// <param name="address">The address.</param>
/// <param name="size">The size.</param>
/// <returns></returns>
public override Memory GetPhysicalMemory(uint address, uint size)
{
// Map physical memory space to virtual memory space
for (uint at = address; at < address + size; at += PageSize)
{
PageTable.MapVirtualAddressToPhysical(at, at);
}
return(new Memory(new IntPtr(address), size));
}
/// <summary>
/// Requests a block of memory from the kernel
/// </summary>
/// <param name="address">The address.</param>
/// <param name="size">The size.</param>
/// <returns></returns>
IMemory IHardwareAbstraction.RequestPhysicalMemory(uint address, uint size)
{
// Map physical memory space to virtual memory space
for (uint at = address; at < address + size; address = address + 4096)
{
PageTable.MapVirtualAddressToPhysical(address, address);
}
return(new Memory(address, size));
}
/// <summary>
/// Gets the page table of the currently selected process and displays it in the lower-left DataGrid.
/// </summary>
/// <param name="processName">The name of the Border associated to the selected process.</param>
private void GetProcessPageTableInfo(string processName)
{
int pid = Int32.Parse(processName[1].ToString());
PageTable pt = OS.GetRunningProcesses()[pid].PageTable;
ProcessPageTable = new ObservableCollection <Machine.Components.Page>(pt.GetPageTableInfo());
dgProcessPageTable.Columns.Clear();
dgProcessPageTable.ItemsSource = ProcessPageTable;
SetColumnNames();
SwitchProcessBorderColor(processName);
}
public ProcessContextBlock()
{
Registers = new uint[10];
Locks = new HashSet<Lock>();
Stack = new PageInfo();
Code = new PageInfo();
GlobalData = new PageInfo();
PageTable = new PageTable {Code, GlobalData, Stack};
}
public VirtualMachine(RealMachine realMachine, int CodeSize, int MaxPages)
{
rm = realMachine;
pg = new PageTable(rm, MaxPages);
PC = 0;
SP = 0;
PagesNumber = MaxPages;
CS = 0;
DS = CodeSize;
SS = ((MaxPages - CodeSize) - (MaxPages - CodeSize) / 2) + CodeSize;
}
/// <summary>
/// Gets a block of memory from the kernel
/// </summary>
/// <param name="address">The address.</param>
/// <param name="size">The size.</param>
/// <returns></returns>
public override ConstrainedPointer GetPhysicalMemory(IntPtr address, uint size)
{
var start = (uint)address.ToInt32();
// Map physical memory space to virtual memory space
for (var at = start; at < start + size; at += PageSize)
{
PageTable.MapVirtualAddressToPhysical(at, at);
}
return(new ConstrainedPointer(address, size));
}
/// <summary>
/// Создает новый процесс
/// </summary>
/// <param name="memory">количество требуемой памяти в байтах</param>
public void CreateNewProcess(string name, int memory, int prioryty)
{
int pid = 0;
// вычислить размер таблицы - количество страниц для храненния таблицы
int pageCountForTable = PageNumberForTable(memory * 2);
try
{
BitArray[] bits = GetFreePages(GetFreePageIndexesInListOfPages(pageCountForTable), out uint offset);
PageTable pageTable = new PageTable(offset, ref bits, pageCountForTable);
pid = CreateRandomPid();
//
// инициализировать таблицу страниц
//
int pageCountToInit = memory / PageSize;
if (FreePages.Count >= pageCountToInit)
{
for (int i = 0; i < pageCountToInit; i++)
{
pageTable.PageTableEntries[i].Adress = FreePages[0];
pageTable.PageTableEntries[i].Present = true;
FreePages.RemoveAt(0);
}
}
else
{
throw new OutOfMemoryException("Невозможно выделить минимум памяти процессу");
}
processes.Add(new Process(name, memory, pid, prioryty, ref pageTable));
//
// создать файл на диске, отвечающий за данный процесс
//
//File.Create(CurrentDirectoryName + processes[processes.Count - 1].Name + ".prc");
StreamWriter writer = new StreamWriter(CurrentDirectoryName + "\\" + processes[processes.Count - 1].FileName);
int recordCount = processes[processes.Count - 1].WSClockEntryMirrors.Count;
for (int i = 0; i < recordCount; i++)
{
WritePageToDrive(writer, processes[processes.Count - 1].PageTable.PageTableEntries[i], i);
processes[processes.Count - 1].WSClockEntryMirrors[i].WrittenIntoFile = true;
}
writer.Close();
}
catch (OutOfMemoryException e)
{
MessageBox.Show(e.Message, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
catch (Exception)
{
MessageBox.Show("Произошло что-то непредвиденное", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
/// <summary>
/// Generates the processes that will be run during our simulation.
/// </summary>
/// <returns>The list of processes to be run during the simulation.</returns>
internal List <Process> GenerateProcesses(int processesCount, int maxPagesPerProcess)
{
List <Process> processes = new List <Process>(processesCount);
for (int pid = 0; pid < processesCount; pid++)
{
PageTable pageTable = new PageTable(Generate(1, maxPagesPerProcess));
Process process = new Process(pid, pageTable);
processes.Add(process);
}
return(processes);
}
private void loadAllService()
{
PageManager objPageManager1 = new PageManager();
PageTable dtPage1 = new PageTable();
dtPage1 = objPageManager1.FetchPage(9);
//dlCountry.DataSource = dtPage1;
//dlCountry.DataBind();
BindHeaders(dtPage1.Rows[0][PageTable.PAGEMETAKEYWORDS_FIELD].ToString(), dtPage1.Rows[0][PageTable.PAGEMETADESCRIPTION_FIELD].ToString());
Page.Title = dtPage1.Rows[0][PageTable.PAGETITLE_FIELD].ToString();
}
public void makeRows(string key, PageTable pageTable)
{
for (int i = 0; i < pageTable.NumPages; ++i)
{
int page = i;
int frame = pageTable.Table[i];
PageCellRow row = new PageCellRow(page, frame);
cellRowDict[key].Add(row);
}
String XAMLCellName = "cell" + key;
updateCellGUI(XAMLCellName, key);
}
private void load_ClinicalStudyMgt()
{
objPageManager1 = new PageManager();
PageTable objTable = new PageTable();
objTable = objPageManager1.FetchServicePage(3);
if (objTable.Rows.Count > 0)
{
div_clinicalstudymgt.InnerHtml = objTable.Rows[0][PageTable.SERVICECONTENT_FIELD].ToString();
}
BindHeaders(objTable.Rows[0][PageTable.PAGEMETAKEYWORDS_FIELD].ToString(), objTable.Rows[0][PageTable.PAGEMETADESCRIPTION_FIELD].ToString());
Page.Title = objTable.Rows[0][PageTable.PAGETITLE_FIELD].ToString();
}
private void load_ServicesOutSourcing()
{
objPageManager1 = new PageManager();
PageTable dtPage1 = new PageTable();
dtPage1 = objPageManager1.FetchServicePage(1);
if (dtPage1.Rows.Count > 0)
{
div_servicesoutsourcing.InnerHtml = dtPage1.Rows[0][PageTable.SERVICECONTENT_FIELD].ToString();
}
BindHeaders(dtPage1.Rows[0][PageTable.PAGEMETAKEYWORDS_FIELD].ToString(), dtPage1.Rows[0][PageTable.PAGEMETADESCRIPTION_FIELD].ToString());
Page.Title = dtPage1.Rows[0][PageTable.PAGETITLE_FIELD].ToString();
}
public VirtualMachine(VirtualMachine oldVirtualMachine)
{
DP = oldVirtualMachine.DP;
PC = oldVirtualMachine.PC;
SP = oldVirtualMachine.SP;
Console = new StringBuilder(oldVirtualMachine.Console.ToString());
IsFinished = oldVirtualMachine.IsFinished;
Name = oldVirtualMachine.Name;
m_realMachine = oldVirtualMachine.m_realMachine;
maxPID++;
PID = maxPID;
PagesTable = new PageTable(oldVirtualMachine.PagesTable);
}
private void load_ClinicalStudySetup()
{
objPageManager1 = new PageManager();
PageTable dtPage1 = new PageTable();
dtPage1 = objPageManager1.FetchServicePage(2);
if (dtPage1.Rows.Count > 0)
{
div_clinicalstudysetup.InnerHtml = dtPage1.Rows[0][PageTable.SERVICECONTENT_FIELD].ToString();
}
BindHeaders(dtPage1.Rows[0][PageTable.PAGEMETAKEYWORDS_FIELD].ToString(), dtPage1.Rows[0][PageTable.PAGEMETADESCRIPTION_FIELD].ToString());
Page.Title = dtPage1.Rows[0][PageTable.PAGETITLE_FIELD].ToString();
}
private void WorkerOnRunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
var hashResult = (HashResult)e.Result;
LoadingIcon.Visibility = Visibility.Hidden;
ProgressBar.Visibility = Visibility.Hidden;
DataGrid.Visibility = Visibility.Visible;
StatisticsPanel.Visibility = Visibility.Visible;
PageDataGrid.ItemsSource = hashResult.PageRepresentations;
BucketDataGrid.ItemsSource = hashResult.BucketRepresentations;
Storage = hashResult.Storage;
PageTable = hashResult.PageTable;
OverflowLabel.Content = $"{hashResult.overflowPct:0.######}%";
CollisionLabel.Content = $"{hashResult.collisionsPct:0.######}%";
AccessLabel.Content = $"{hashResult.avgAccess:#.##}";
}
/// <summary>
/// 执行查询，并返回一张表。
/// </summary>
/// <param name="dbCommand">数据库命令。</param>
/// <param name="dataAdpater">数据源适配器。</param>
/// <returns>一张表。</returns>
public static PageTable ExecuteTable(this DbCommand dbCommand, DbDataAdapter dataAdpater)
{
if (dbCommand == null)
{
throw new ArgumentNullException(nameof(dbCommand));
}
if (dataAdpater == null)
{
throw new ArgumentNullException(nameof(dataAdpater));
}
PageTable table = new PageTable();
dataAdpater.Fill(table);
table.Total = table.Rows.Count;
return(table);
}
public void haltProcess(int pId)
{
//Get a reference to the PCB node for the process.
PCB PCBNode = findPCBNode(pId);
//Get references to the processes page tables.
PageTable textTable = PCBNode.InnerPage.TextTable;
PageTable dataTable = PCBNode.InnerPage.DataTable;
//Go through the text page table.
for (int i = 0; i < PCBNode.NumTextPages; ++i)
{
//Find the frame number for each page in the text page table.
int frame = textTable.Table[i];
//Clear the frame.
frameTable[frame] = "";
physicalMListRowData[frame].frameInfoXAML = frameTable[frame];
}
//Go through the data page table.
for (int i = 0; i < PCBNode.NumDataPages; ++i)
{
//Find the frame number for each page in the data page table.
int frame = dataTable.Table[i];
//Clear the frame.
frameTable[frame] = "";
physicalMListRowData[frame].frameInfoXAML = frameTable[frame];
}
//Remove the inner page table from the outer page table.
outerPageTable.Remove(pId);
//Remove the PCB from the PCB list. This removes all references to the page tables, so they should be garbage collected.
pcbList.Remove(PCBNode);
String XAMLCellText = "cell" + pId.ToString() + "0";
String XAMLCellData = "cell" + pId.ToString() + "1";
DataGrid gridText = (DataGrid)App.Current.MainWindow.FindName(XAMLCellText);
DataGrid dataText = (DataGrid)App.Current.MainWindow.FindName(XAMLCellData);
gridText.Opacity = 0.0;
dataText.Opacity = 0.0;
}
public void IndexTest()
{
var target = new SimpleDatabase_Accessor("RRR", false, true);
target.CreateTable("Car", 96, 36);
PageTable pt = target.DiskReadPageTable("Car");
pt.InsertIndex("aa", 1, 1, 1, Guid.Empty);
pt.InsertIndex("bb", 1, 1, 1, Guid.Empty);
var r = new RecordIndexEntry
{
Key = "aa"
};
pt.WipeoutIndex(r, Guid.Empty);
Assert.IsFalse((from i in pt.RecordIndices where i.Key == "aa" select i).Any());
pt.InsertIndex("aa", 1, 1, 1, Guid.Empty);
Assert.IsTrue(pt.RecordIndices[0].Key == "aa");
}
partial void InsertPageTable(PageTable instance);
private PageTable GetOrCreateTable(int directory_index)
{
if (Directory[directory_index] == null)
Directory[directory_index] = new PageTable(directory_index);
return Directory[directory_index];
}
partial void UpdatePageTable(PageTable instance);
partial void DeletePageTable(PageTable instance);
public Table(string name, PageTable pageTable, DataFileHeader fileHeader)
{
this.Name = name;
this.PageTable = pageTable;
this.FileHeader = fileHeader;
}
