/// <summary>
/// Determines the platform architecture the OS is running a process in. Wow mode processes
/// will report INTEL (32bit) otherwise all processes run in the native system architecture
/// </summary>
static public ProcessorArchitecture GetArchitectureFromPid(int pid)
{
NativeMethods.SYSTEM_INFO info;
NativeMethods.GetSystemInfo(out info);
bool isWow = false;
if (info.wProcessorArchitecture == ProcessorArchitecture.PROCESSOR_ARCHITECTURE_INTEL)
{
// We know that we need an x86 context
return(ProcessorArchitecture.PROCESSOR_ARCHITECTURE_INTEL);
}
else
{
// We cannot make this call if we know we're executing on a 32-bit OS, so we wait until
// we know that we're running under a 64-bit OS where this method is defined.
// 0x0400 = PROCESS_QUERY_INFORMATION
using (SafeWin32Handle hProcess = NativeMethods.OpenProcess(0x0400, false, pid))
{
NativeMethods.IsWow64Process(hProcess, ref isWow);
}
if (isWow)
{
// Even though we're running on a 64-bit OS, we are currently in WOW mode.
return(ProcessorArchitecture.PROCESSOR_ARCHITECTURE_INTEL);
}
// From this point on, we know that we're not running a 32-bit OS. We can fully trust the
// value in wProcessorArchitecture
else
{
return(info.wProcessorArchitecture);
}
}
}
/// <summary>
/// Attach to a process with the given Process ID
/// Only debug the specified CLR version; all others are ignored.
/// </summary>
/// <param name="processId">The Process ID to attach to.</param>
/// <param name="attachContinuationEvent">A OS event handle which must be set to unblock the debuggee
/// when first continuing from attach</param>
/// <param name="version">The version string for the CLR instance to debug.</param>
/// <returns>The resulting MDbgProcess.</returns>
public MDbgProcess Attach(int processId,
Microsoft.Samples.Debugging.Native.SafeWin32Handle attachContinuationEvent,
string version)
{
Debug.Assert(version != null);
MDbgProcess p = m_processMgr.CreateLocalProcess(new CorDebugger(version));
p.Attach(processId, attachContinuationEvent);
return(p);
}
public static extern bool SetEvent(SafeWin32Handle eventHandle);
public static extern SafeMapViewHandle MapViewOfFile(SafeWin32Handle hFileMappingObject, uint
dwDesiredAccess, uint dwFileOffsetHigh, uint dwFileOffsetLow,
IntPtr dwNumberOfBytesToMap);
public static extern bool IsWow64Process(SafeWin32Handle hProcess, ref bool isWow);
public static void AttachCmd(string arguments)
{
const string versionArg = "ver";
const string continuationEventArg = "attachEvent";
const string pidArg = "pid";
ArgParser ap = new ArgParser(arguments, versionArg + ":1;" + continuationEventArg + ":1;" + pidArg + ":1");
if (ap.Count > 1)
{
throw new MDbgShellException("Wrong # of arguments.");
}
if (!ap.Exists(0) && !ap.OptionPassed(pidArg))
{
WriteOutput("Please choose some process to attach");
ProcessEnumCmd("");
return;
}
int pid;
if (ap.Exists(0))
{
pid = ap.AsInt(0);
if (ap.OptionPassed(pidArg))
{
WriteOutput("Do not specify pid option when also passing pid as last argument");
return;
}
}
else
{
Debug.Assert(ap.OptionPassed(pidArg)); // verified above
pid = ap.GetOption(pidArg).AsInt;
}
//
// Do some sanity checks to give useful end-user errors.
//
// Can't attach to ourselves!
if (Process.GetCurrentProcess().Id == pid)
{
throw new MDbgShellException("Cannot attach to myself!");
}
// Can't attach to a process that we're already debugging.
// ICorDebug may enforce this, but the error may not be very descriptive for an end-user.
// For example, ICD may propogate an error from the OS, and the OS may return
// something like AccessDenied if another debugger is already attached.
// This only checks for cases where this same instance of MDbg is already debugging
// the process of interest.
foreach (MDbgProcess procOther in Debugger.Processes)
{
if (pid == procOther.CorProcess.Id)
{
throw new MDbgShellException("Can't attach to process " + pid + " because it's already being debugged");
}
}
// Get the OS handle if there was one
SafeWin32Handle osEventHandle = null;
if (ap.OptionPassed(continuationEventArg))
{
osEventHandle = new SafeWin32Handle(new IntPtr(ap.GetOption(continuationEventArg).AsHexOrDecInt));
}
// determine the version to attach to
string version = null;
if (ap.OptionPassed(versionArg))
{
version = ap.GetOption(versionArg).AsString;
}
else
{
version = MdbgVersionPolicy.GetDefaultAttachVersion(pid);
}
if (version == null)
{
throw new MDbgShellException("Can't determine what version of the CLR to attach to in process " +
pid + ". Use -ver to specify a version");
}
// attach
MDbgProcess p;
p = Debugger.Attach(pid, osEventHandle, version);
p.Go().WaitOne();
if (osEventHandle != null)
{
osEventHandle.Dispose();
}
}
public static extern bool SetEvent(SafeWin32Handle eventHandle);
public static extern SafeMapViewHandle MapViewOfFile(SafeWin32Handle hFileMappingObject, uint
dwDesiredAccess, uint dwFileOffsetHigh, uint dwFileOffsetLow,
IntPtr dwNumberOfBytesToMap);
public static extern bool IsWow64Process(SafeWin32Handle hProcess, ref bool isWow);
public void Attach(int processId, SafeWin32Handle attachContinuationEvent, CorRemoteTarget target)
{
Debug.Assert(!IsAlive);
if (IsAlive)
throw new InvalidOperationException("cannot call Attach on active process");
m_stopGo = new V2StopGoController(this);
m_processAttaching = true;
try
{
m_corProcess = m_corDebugger.DebugActiveProcess(processId,/*win32Attach*/ false, target);
NativeProcessCreated();
}
catch
{
// if an attach fails, we need to remove the process object from active processes.
CleanAfterProcessExit();
throw;
}
// User's breakpoint should start with number 0. When launching, 1st breakpoint created is
// special -- user entry point and it's given number 0.
// In case of attach we don't create any such breakpoint but we still want
// to start numbering breakpoints with 1; therefore we'll increase free breakpoint number.
if (Breakpoints.m_freeBreakpointNumber == 0)
{
Breakpoints.m_freeBreakpointNumber = 1;
}
InitDebuggerCallbacks();
// resume the debuggee
// for pure managed debugging this is legal as long as DebugActiveProcess has returned
if (attachContinuationEvent != null)
{
Microsoft.Samples.Debugging.Native.NativeMethods.SetEvent(attachContinuationEvent);
attachContinuationEvent.Close();
}
}
/// <summary>
/// Attach to a process by Process ID (PID)
/// </summary>
/// <param name="processId">The PID to attach to.</param>
/// <param name="attachContinuationEvent">A OS event handle which must be set to unblock the debuggee
/// when first continuing from attach</param>
public void Attach(int processId, SafeWin32Handle attachContinuationEvent)
{
Attach(processId, attachContinuationEvent, null);
}
