private string GetOutputDebugString(OUTPUT_DEBUG_STRING_INFO debugString)
{
if (_processInformation == null)
{
return("<no process handle>");
}
// Note: Sometimes when debugging unit tests, we get AccessViolationException reading bytes from the debuggee.
#if false
return("<no processed>");
#else
var isUnicode = (debugString.fUnicode != 0);
var byteCount = (uint)(debugString.nDebugStringLength * (isUnicode ? sizeof(char) : sizeof(byte)));
var bytes = new byte[byteCount];
uint bytesRead;
if (!Win32.Processes.NativeMethods.ReadProcessMemory(_processInformation.ProcessHandle, debugString.lpDebugStringData, bytes, byteCount, out bytesRead))
{
return(string.Format("<error getting debug string from process: {0}>", new LastWin32ErrorException().Message));
}
var message = (isUnicode ? Conversion.Utf16ToString(bytes) : Conversion.Utf8ToString(bytes));
message = message.TrimEnd('\r', '\n');
return(message);
#endif
}
public void PrintDebugString(OUTPUT_DEBUG_STRING_INFO outputDbgStrInfo)
{
using (SafeProcessHandle hProcess = Process.OpenProcess(ProcessAccessFlags.VmRead, false, pid))
{
if (hProcess.IsInvalid)
{
throw new ArgumentException(String.Format("Unable to open process {0}, error {x:8}", pid, Marshal.GetLastWin32Error()));
}
var dbgString = new byte[outputDbgStrInfo.nDebugStringLength];
uint numberOfBytesRead;
var result = Process.ReadProcessMemory(hProcess, outputDbgStrInfo.lpDebugStringData, dbgString, outputDbgStrInfo.nDebugStringLength, out numberOfBytesRead);
if (result)
{
if (outputDbgStrInfo.fUnicode == 0)
{
Console.WriteLine("Debug String: {0}", Encoding.ASCII.GetString(dbgString));
}
else
{
Console.WriteLine("Debug String: {0}", Encoding.Unicode.GetString(dbgString));
}
}
}
}
// returns a message from the event
static string GetMessageFromDebugEvent(CorProcess corProcess, OUTPUT_DEBUG_STRING_INFO eventOds)
{
bool isUnicode = eventOds.fUnicode != 0;
byte[] buffer = new byte[isUnicode?eventOds.nDebugStringLenght * 2:eventOds.nDebugStringLenght];
int bytesRead = corProcess.ReadMemory(eventOds.lpDebugStringData.ToInt64(), buffer);
Debug.Assert(buffer.Length == bytesRead);
System.Text.StringBuilder sb = new System.Text.StringBuilder();
for (int i = 0; i < buffer.Length; i++)
{
int val;
if (isUnicode)
{
val = (int)buffer[i] + ((int)buffer[i + 1] << 8);
i++;
}
else
{
val = buffer[i];
}
sb.Append((char)val);
}
return(sb.ToString());
}
public void PrintDebugString(OUTPUT_DEBUG_STRING_INFO outputDbgStrInfo)
{
var dbgString = new byte[outputDbgStrInfo.nDebugStringLength];
uint numberOfBytesRead;
var result = ProcessNativeMethod.ReadProcessMemory(hProcess, outputDbgStrInfo.lpDebugStringData, dbgString, outputDbgStrInfo.nDebugStringLength, out numberOfBytesRead);
if (result)
{
if (outputDbgStrInfo.fUnicode == 0)
{
Console.WriteLine("Debug String: {0}", Encoding.ASCII.GetString(dbgString));
}
else
{
Console.WriteLine("Debug String: {0}", Encoding.Unicode.GetString(dbgString));
}
}
}