/// <summary>
/// Writes out trace data. data should be a series of structures, starting with a
/// EVENT_TRACE_HEADER structure.
/// </summary>
/// <param name="data"></param>
public void Trace(EVENT_TRACE_HEADER header, params object[] data) {
IntPtr traceData;
int size = Marshal.SizeOf(typeof(EVENT_TRACE_HEADER));
for (int i = 0; i < data.Length; i++) {
string strData;
byte[] asciiStrData;
if ((strData = data[i] as string) != null) {
size += strData.Length * 2 + 2;
} else if ((asciiStrData = data[i] as byte[]) != null) {
size += asciiStrData.Length + 1;
} else {
size += Marshal.SizeOf(data[i]);
}
}
IntPtr tempData = traceData = Marshal.AllocHGlobal(size);
try {
if (traceData == IntPtr.Zero) {
throw new OutOfMemoryException();
}
tempData = new IntPtr(tempData.ToInt64() + Marshal.SizeOf(typeof(EVENT_TRACE_HEADER)));
for (int i = 0; i < data.Length; i++) {
string strData;
byte[] asciiStrData;
if ((strData = data[i] as string) != null) {
for (int j = 0; j < strData.Length; j++) {
Marshal.WriteInt16(tempData, j * 2, strData[j]);
}
Marshal.WriteInt16(tempData, strData.Length * 2, 0);
tempData = new IntPtr(tempData.ToInt64() + strData.Length * 2 + 2);
} else if ((asciiStrData = data[i] as byte[]) != null) {
for (int j = 0; j < asciiStrData.Length; j++) {
Marshal.WriteByte(tempData, j, asciiStrData[j]);
}
Marshal.WriteByte(tempData, asciiStrData.Length, 0);
tempData = new IntPtr(tempData.ToInt64() + asciiStrData.Length + 1);
} else {
Marshal.StructureToPtr(data[i], tempData, false);
tempData = new IntPtr(tempData.ToInt64() + Marshal.SizeOf(data[i]));
}
}
header.Size = (ushort)size;
Marshal.StructureToPtr(header, traceData, false);
var res = EtlNativeMethods.TraceEvent(_handle, traceData);
if (res != 0) {
throw new Win32Exception((int)res);
}
} finally {
Marshal.FreeHGlobal(traceData);
}
}
/// <summary>
/// Writes out trace data. data should be a series of structures, starting with a
/// EVENT_TRACE_HEADER structure.
/// </summary>
/// <param name="data"></param>
public void Trace(EVENT_TRACE_HEADER header, params object[] data)
{
IntPtr traceData;
int size = Marshal.SizeOf(typeof(EVENT_TRACE_HEADER));
for (int i = 0; i < data.Length; i++)
{
string strData;
byte[] asciiStrData;
if ((strData = data[i] as string) != null)
{
size += strData.Length * 2 + 2;
}
else if ((asciiStrData = data[i] as byte[]) != null)
{
size += asciiStrData.Length + 1;
}
else
{
size += Marshal.SizeOf(data[i]);
}
}
IntPtr tempData = traceData = Marshal.AllocHGlobal(size);
try
{
if (traceData == IntPtr.Zero)
{
throw new OutOfMemoryException();
}
tempData = new IntPtr(tempData.ToInt64() + Marshal.SizeOf(typeof(EVENT_TRACE_HEADER)));
for (int i = 0; i < data.Length; i++)
{
string strData;
byte[] asciiStrData;
if ((strData = data[i] as string) != null)
{
for (int j = 0; j < strData.Length; j++)
{
Marshal.WriteInt16(tempData, j * 2, strData[j]);
}
Marshal.WriteInt16(tempData, strData.Length * 2, 0);
tempData = new IntPtr(tempData.ToInt64() + strData.Length * 2 + 2);
}
else if ((asciiStrData = data[i] as byte[]) != null)
{
for (int j = 0; j < asciiStrData.Length; j++)
{
Marshal.WriteByte(tempData, j, asciiStrData[j]);
}
Marshal.WriteByte(tempData, asciiStrData.Length, 0);
tempData = new IntPtr(tempData.ToInt64() + asciiStrData.Length + 1);
}
else
{
Marshal.StructureToPtr(data[i], tempData, false);
tempData = new IntPtr(tempData.ToInt64() + Marshal.SizeOf(data[i]));
}
}
header.Size = (ushort)size;
Marshal.StructureToPtr(header, traceData, false);
var res = EtlNativeMethods.TraceEvent(_handle, traceData);
if (res != 0)
{
throw new Win32Exception((int)res);
}
}
finally
{
Marshal.FreeHGlobal(traceData);
}
}