Read virtual memory of a process.

data/resources/StringResources.resx

@@ -5735,7 +5735,16 @@ Microsoft.Tools.WindowsInstallerXml.Extensions.NetFxCompiler, WixNetFxExtension<
     <value>Jump to address:</value>
   </data>
   <data name="MainWindow.Windows.Debug.MemoryPad.Refresh" xml:space="preserve">
-    <value>Refresh</value>
+    <value>Refresh current addresses</value>
+  </data>
+  <data name="MainWindow.Windows.Debug.MemoryPad.NextAddress" xml:space="preserve">
+    <value>Next virtual addresses</value>
+  </data>
+  <data name="MainWindow.Windows.Debug.MemoryPad.AddressNotFound" xml:space="preserve">
+    <value>The address {0} was not found!</value>
+  </data>
+  <data name="MainWindow.Windows.Debug.MemoryPad.PreviousAddress" xml:space="preserve">
+    <value>Previous virtual addresses</value>
   </data>
   <data name="MainWindow.Windows.Debug.ParallelStack" xml:space="preserve">
     <value>Parallel Stacks</value>

data/resources/image/BitmapResources/BitmapResources.res

@@ -48,6 +48,8 @@ OutputPad.Toolbar.ToggleWordWrap    = OutputPadIcons\ToggleWordWrap.png
 
 #Memory pad
 MemoryPad.Icon  		    		 			= PadIcons\memory.png
+MemoryPad.NextMemoryIcon  		     			= PadIcons\nextmemory.png
+MemoryPad.PreviousMemoryIcon	     			= PadIcons\previousmemory.png
 
 Icons.16x16.OpenFolderBitmap                      = ProjectBrowserIcons\Folder.Open.png
 Icons.16x16.ClosedFolderBitmap                    = ProjectBrowserIcons\Folder.Closed.png

src/AddIns/Debugger/Debugger.AddIn/Debugger.AddIn.addin

@@ -199,14 +199,32 @@
 	</Path>
 	
 	<Path name="/SharpDevelop/Pads/MemoryPad/ToolBar">
-		<ToolbarItem id="JumpToAddressLabel" type="Item" label="${res:MainWindow.Windows.Debug.MemoryPad.JumpTo}" class="ICSharpCode.SharpDevelop.Gui.Pads.JumpToAddressCommand"/>
-		<ToolbarItem id="JumpToAddressCombo" type="ComboBox" class="ICSharpCode.SharpDevelop.Gui.Pads.JumpToAddressCommand"/>
-		<ToolbarItem id="Separator1" type="Separator"/>
+		<ToolbarItem id="PreviousAddressLabel" 
+		             type="Item"
+		             icon="MemoryPad.PreviousMemoryIcon"
+		             tooltip="${res:MainWindow.Windows.Debug.MemoryPad.PreviousAddress}" 
+		             class="ICSharpCode.SharpDevelop.Gui.Pads.PreviousAddressCommand"/>
+		<ToolbarItem id="NextAddressLabel" 
+		             type="Item"
+		             icon="MemoryPad.NextMemoryIcon"
+		             tooltip="${res:MainWindow.Windows.Debug.MemoryPad.NextAddress}" 
+		             class="ICSharpCode.SharpDevelop.Gui.Pads.NextAddressCommand"/>
+		<ToolbarItem id="Separator1" 
+		             type="Separator"/>
+		<ToolbarItem id="JumpToAddressLabel" 
+		             type="Item" 
+		             label="${res:MainWindow.Windows.Debug.MemoryPad.JumpTo}" 
+		             class="ICSharpCode.SharpDevelop.Gui.Pads.JumpToAddressCommand"/>
+		<ToolbarItem id="JumpToAddressCombo" 
+		             type="ComboBox" 
+		             class="ICSharpCode.SharpDevelop.Gui.Pads.JumpToAddressCommand"/>
+		<ToolbarItem id="Separator2" 
+		             type="Separator"/>
 		<ToolbarItem id="RefreshMemory" 
 		             type="Item"
 		             icon="Icons.16x16.Refresh"
 		             tooltip="${res:MainWindow.Windows.Debug.MemoryPad.Refresh}"
-		             class="ICSharpCode.SharpDevelop.Gui.Pads.RefreshMemoryCommand"/>
+		             class="ICSharpCode.SharpDevelop.Gui.Pads.RefreshAddressCommand"/>
 	</Path>
 	
 	<Path name="/SharpDevelop/Services/DebuggerService/Visualizers">

src/AddIns/Debugger/Debugger.AddIn/Pads/Commands/MemoryPadCommands.cs

@@ -40,9 +40,9 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 		}
 	}
 	
-	public sealed class RefreshMemoryCommand : AbstractCommand
+	public abstract class ItemMemoryCommand : AbstractCommand
 	{
-		MemoryPad pad;
+		protected MemoryPad pad;
 		
 		protected override void OnOwnerChanged(EventArgs e)
 		{
@@ -52,13 +52,38 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 			
 			base.OnOwnerChanged(e);
 		}
+	}
+	
+	public sealed class RefreshAddressCommand : ItemMemoryCommand
+	{
+		public override void Run()
+		{
+			if (this.pad == null)
+				return;
+			
+			this.pad.Refresh();
+		}
+	}
 	
+	public sealed class NextAddressCommand : ItemMemoryCommand
+	{
+		public override void Run()
+		{
+			if (this.pad == null)
+				return;
+			
+			this.pad.MoveToNextAddress();
+		}
+	}
+	
+	public sealed class PreviousAddressCommand : ItemMemoryCommand
+	{
 		public override void Run()
 		{
 			if (this.pad == null)
 				return;
 			
-			this.pad.Refresh(true);
+			this.pad.MoveToPreviousAddress();
 		}
 	}
 }

src/AddIns/Debugger/Debugger.AddIn/Pads/MemoryPad.cs

@@ -18,11 +18,13 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 {
 	public sealed class MemoryPad : DebuggerPad
 	{
-		Dictionary<long, int> addressesMapping = new Dictionary<long, int>();
+		int currentAddressIndex;
 		ConsoleControl console;
 		int addressStep = 16;
 		
 		Process debuggedProcess;
+		List<Tuple<long, long>> memoryAddresses = new List<Tuple<long, long>>();
+		Dictionary<long, int> addressesMapping = new Dictionary<long, int>();
 		
 		public MemoryPad()
 		{
@@ -40,13 +42,12 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 		
 		protected override void SelectProcess(Process process)
 		{
-			if (debuggedProcess != null) {
-				debuggedProcess.Paused -= OnProcessPaused;
-			}
+			if (process == null)
+				return;
+			
 			debuggedProcess = process;
-			if (debuggedProcess != null) {
-				debuggedProcess.Paused += OnProcessPaused;
-			}
+			memoryAddresses = debuggedProcess.GetMemoryAddresses();
+			currentAddressIndex = 0;
 		}
 		
 		public override void RefreshPad()
@@ -62,16 +63,33 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 					address = address.Substring(2);
 				
 				long addr = Int64.Parse(address, NumberStyles.AllowHexSpecifier);
-				long mod = addr % addressStep;
 				
+				// find index for the address or the near addess
+				currentAddressIndex = memoryAddresses.Search(addr);
+				if (currentAddressIndex == -1) {
+					MessageService.ShowMessage(
+						string.Format(ResourceService.GetString("MainWindow.Windows.Debug.MemoryPad.AddressNotFound"), address), 
+						ResourceService.GetString("MainWindow.Windows.Debug.MemoryPad"));
+					
+					currentAddressIndex = 0;
+					return;
+				}
+				
+				// refresh pad
+				Refresh();
+				
+				// find line
+				long mod = addr % addressStep;
 				int line;
 				if (addressesMapping.ContainsKey(addr - mod))
 					line = addressesMapping[addr - mod];
 				else
 					line = 1;
 
+				// jump
 				console.SelectText(line, 0, 8);
 				console.JumpToLine(line);
+				
 			} catch (System.Exception ex) {
 				#if DEBUG
 				LoggingService.Error(ex.Message);
@@ -79,34 +97,33 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 			}
 		}
 		
-		public void Refresh(bool force = false)
+		public void Refresh()
 		{
 			if (debuggedProcess == null || debugger.IsProcessRunning)
 				return;
 			
-			if (!force && addressesMapping.Count > 0)
+			if (memoryAddresses.Count == 0)
 				return;
 			
-			if (force) {
-				addressesMapping.Clear();
-				console.Clear();
-			}
+			console.Clear();addressesMapping.Clear();
 			
-			long address;
-			byte[] memory = debuggedProcess.ReadProcessMemory(out address);
+			// get current address
+			var item = memoryAddresses[currentAddressIndex];
+			long address = item.Item1;
+			long size = item.Item2;
 			
-			if (memory == null)
-				return;
+			byte[] memory = debuggedProcess.ReadProcessMemory(address, size);
+			System.Diagnostics.Debug.Assert(memory != null);
 			
-			int index = 0;
 			int div = memory.Length / addressStep;
 			int mod = memory.Length % addressStep;
+			int index = 0;
 			
 			while (index < div) {
 				StringBuilder sb = new StringBuilder();
 				addressesMapping.Add(address, index + 1);
 				// write address
-				sb.Append(address.ToString("X8"));address += addressStep;
+				sb.Append(address.ToString("X8")); address += (long)addressStep;
 				sb.Append(" ");
 				
 				// write bytes
@@ -127,7 +144,6 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 				
 				// start writing in console
 				console.Append(sb.ToString());
-				
 				index++;
 			}
 			
@@ -161,9 +177,46 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 			}
 		}
 		
-		private void OnProcessPaused(object sender, ProcessEventArgs e)
+		public void MoveToPreviousAddress()
 		{
+			if (debuggedProcess == null || debugger.IsProcessRunning)
+				return;
+			
+			if (currentAddressIndex == 0)
+				return;
+			
+			currentAddressIndex--;
 			Refresh();
 		}
+		
+		public void MoveToNextAddress()
+		{
+			if (debuggedProcess == null || debugger.IsProcessRunning)
+				return;
+			
+			if (currentAddressIndex == memoryAddresses.Count)
+				return;
+			
+			currentAddressIndex++;
+			Refresh();
+		}
+	}
+	
+	internal static class MemoryPadExtensions
+	{
+		internal static int Search(this List<Tuple<long, long>> source, long item1)
+		{
+			if (source == null)
+				throw new NullReferenceException("Source is null!");
+			
+			for (int i = 0; i < source.Count - 1; i++) {
+				if (source[i + 1].Item1 < item1)
+					continue;
+				
+				return i;
+			}
+			
+			return -1;
+		}
 	}
 }

src/AddIns/Debugger/Debugger.Core/Interop/NativeMethods.cs

@@ -4,6 +4,7 @@
 #pragma warning disable 1591
 
 using System;
+using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Text;
 
@@ -38,6 +39,62 @@ namespace Debugger.Interop
 		Synchronize = 0x00100000
 	}
 	
+	[StructLayout(LayoutKind.Sequential)]
+	public struct SYSTEM_INFO
+	{
+		internal _PROCESSOR_INFO_UNION uProcessorInfo;
+		public uint dwPageSize;
+		public IntPtr lpMinimumApplicationAddress;
+		public IntPtr lpMaximumApplicationAddress;
+		public IntPtr dwActiveProcessorMask;
+		public uint dwNumberOfProcessors;
+		public uint dwProcessorType;
+		public uint dwAllocationGranularity;
+		public ushort dwProcessorLevel;
+		public ushort dwProcessorRevision;
+	}
+
+	[StructLayout(LayoutKind.Explicit)]
+	public struct _PROCESSOR_INFO_UNION
+	{
+		[FieldOffset(0)]
+		internal uint dwOemId;
+		[FieldOffset(0)]
+		internal ushort wProcessorArchitecture;
+		[FieldOffset(2)]
+		internal ushort wReserved;
+	}
+	
+	[Flags]
+	public enum AllocationType
+	{
+		Commit = 0x1000,
+		Reserve = 0x2000,
+		Decommit = 0x4000,
+		Release = 0x8000,
+		Reset = 0x80000,
+		Physical = 0x400000,
+		TopDown = 0x100000,
+		WriteWatch = 0x200000,
+		LargePages = 0x20000000
+	}
+
+	[Flags]
+	public enum MemoryProtection
+	{
+		Execute = 0x10,
+		ExecuteRead = 0x20,
+		ExecuteReadWrite = 0x40,
+		ExecuteWriteCopy = 0x80,
+		NoAccess = 0x01,
+		ReadOnly = 0x02,
+		ReadWrite = 0x04,
+		WriteCopy = 0x08,
+		GuardModifierflag = 0x100,
+		NoCacheModifierflag = 0x200,
+		WriteCombineModifierflag = 0x400
+	}
+	
 	public static class NativeMethods
 	{
 		[DllImport("kernel32.dll")]
@@ -74,45 +131,59 @@ namespace Debugger.Interop
 			out int lpNumberOfBytesRead
 		);
 		
-		public static byte[] ReadProcessMemory(this Process process, out long baseAddress)
-		{
-			uint handle = process.CorProcess.GetHandle();
-			
-			var proc = System.Diagnostics.Process.GetProcessById((int)process.Id);
-			baseAddress = proc.MainModule.BaseAddress.ToInt64();
-			long addr = baseAddress;
+		[DllImport("kernel32.dll", SetLastError = true)]
+		public static extern void GetSystemInfo(out SYSTEM_INFO lpSystemInfo);
 		
-			byte[] memory = null;
+		[DllImport("kernel32.dll", SetLastError=true, ExactSpelling=true)]
+		public static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress, uint dwSize, AllocationType flAllocationType, MemoryProtection flProtect);
 		
-			while (true)
+		public static List<Tuple<long, long>> GetMemoryAddresses(this Process process)
 		{
-				byte[] temp = new byte[1024];
-				int outSize;
-				bool success = ReadProcessMemory(new IntPtr(handle), new IntPtr(addr), temp, temp.Length, out outSize);
+			var result = new List<Tuple<long, long>>();
+			SYSTEM_INFO sysinfo = new SYSTEM_INFO();
+			GetSystemInfo(out sysinfo);
 			
-				addr += 1024;
+			uint handle = process.CorProcess.GetHandle();
+			long address = 0;
+			MEMORY_BASIC_INFORMATION m = new MEMORY_BASIC_INFORMATION();
 			
-				if (outSize == 0)
+			while (address < sysinfo.lpMaximumApplicationAddress.ToInt64())
+			{
+				if (!VirtualQueryEx(new IntPtr(handle), new IntPtr(address), out m, (uint)Marshal.SizeOf(m)))
 					break;
 				
-				if (memory == null) {
-					memory = new byte[outSize];
-					Array.Copy(temp, memory, outSize);
-				} else {
-					// expand memory
-					byte[] newTemp = new byte[memory.Length];
-					Array.Copy(memory, newTemp, memory.Length);
-					
-					memory = new byte[memory.Length + outSize];
-					Array.Copy(newTemp, memory, newTemp.Length);
-					Array.Copy(temp, 0, memory, newTemp.Length, outSize);
+				try {
+					byte[] temp = new byte[m.RegionSize.ToInt64()];
+					int outSize;
+					if (!ReadProcessMemory(new IntPtr(handle), new IntPtr(address), temp, temp.Length, out outSize))
+						continue;
+				} catch {
+					continue;
+				} finally {
+					// next address
+					address = m.BaseAddress.ToInt64() + m.RegionSize.ToInt64();
 				}
 				
-				if (!success) // break when we cannot read anymore
-					break;
+				result.Add(new Tuple<long, long>(m.BaseAddress.ToInt64(), m.RegionSize.ToInt64()));
+			}
+			
+			return result;
+		}
+		
+		public static byte[] ReadProcessMemory(this Process process, long startAddress, long size)
+		{
+			uint handle = process.CorProcess.GetHandle();
+			
+			byte[] temp = new byte[size];
+			int outSize;
+			bool success = ReadProcessMemory(new IntPtr(handle), new IntPtr(startAddress), temp, temp.Length, out outSize);
+			
+			if (!success || outSize == 0) {
+				var proc = System.Diagnostics.Process.GetProcessById((int)process.Id);
+				return process.ReadProcessMemory(proc.MainModule.BaseAddress.ToInt64(), (long)4096);
 			}
 			
-			return memory;
+			return temp;
 		}
 	}
 }

src/Main/Base/Project/Src/Gui/Pads/AbstractConsolePad.cs

@@ -294,7 +294,6 @@ namespace ICSharpCode.SharpDevelop.Gui
 			this.Children.Add(editor);
 			
 			editor.TextArea.ReadOnlySectionProvider = readOnlyRegion = new BeginReadOnlySectionProvider();
-			
 			editor.TextArea.TextEntered += new TextCompositionEventHandler(editor_TextArea_TextEntered);
 			editor.TextArea.PreviewKeyDown += new KeyEventHandler(editor_TextArea_PreviewKeyDown);
 		}