internal EventTraceLog(long handle, Guid session_guid, string session_name, SafeHGlobalBuffer properties)
{
_handle = handle;
SessionGuid = session_guid;
SessionName = session_name;
_properties = properties.Detach();
_providers = new List <EnabledProvider>();
}
private SafeBuffer GetInitialBuffer()
{
if (Buffer != null)
{
return(new SafeHGlobalBuffer(Buffer.DangerousGetHandle(), (int)Buffer.ByteLength, false));
}
else if (Bytes != null)
{
return(new SafeHGlobalBuffer(Bytes));
}
else
{
using (var buffer = new SafeHGlobalBuffer(Marshal.SizeOf(Value)))
{
Marshal.StructureToPtr(Value, buffer.DangerousGetHandle(), false);
return(buffer.Detach());
}
}
}
private static NtResult <SafeHGlobalBuffer> GetDeviceInterfaceProperty(string device_instance, DEVPROPKEY key, out DEVPROPTYPE type, bool throw_on_error)
{
int length = 0;
var result = DeviceNativeMethods.CM_Get_Device_Interface_PropertyW(device_instance, key, out type, SafeHGlobalBuffer.Null, ref length, 0);
if (result != CrError.BUFFER_SMALL)
{
return(result.ToNtStatus().CreateResultFromError <SafeHGlobalBuffer>(throw_on_error));
}
using (var buffer = new SafeHGlobalBuffer(length))
{
return(DeviceNativeMethods.CM_Get_Device_Interface_PropertyW(device_instance, key, out type, buffer,
ref length, 0).ToNtStatus().CreateResult(throw_on_error, () => buffer.Detach()));
}
}
private static NtResult <SafeHGlobalBuffer> GetClassProperty(Guid class_guid, CmClassType flags, DEVPROPKEY key, out DEVPROPTYPE type, bool throw_on_error)
{
int length = 0;
var result = DeviceNativeMethods.CM_Get_Class_PropertyW(class_guid, key, out type, SafeHGlobalBuffer.Null, ref length, flags);
if (result != CrError.BUFFER_SMALL)
{
return(result.ToNtStatus().CreateResultFromError <SafeHGlobalBuffer>(throw_on_error));
}
using (var buffer = new SafeHGlobalBuffer(length))
{
return(DeviceNativeMethods.CM_Get_Class_PropertyW(class_guid, key, out type, buffer,
ref length, flags).ToNtStatus().CreateResult(throw_on_error, () => buffer.Detach()));
}
}
private static NtResult <SafeHGlobalBuffer> GetDeviceRegistryPropertyBuffer(Guid class_guid, CmDeviceProperty property, bool throw_on_error)
{
int length = 0;
var result = DeviceNativeMethods.CM_Get_Class_Registry_PropertyW(class_guid, property, out RegistryValueType reg_type,
SafeHGlobalBuffer.Null, ref length, 0, IntPtr.Zero);
if (result != CrError.BUFFER_SMALL)
{
return(result.ToNtStatus().CreateResultFromError <SafeHGlobalBuffer>(throw_on_error));
}
using (var buffer = new SafeHGlobalBuffer(length))
{
return(DeviceNativeMethods.CM_Get_Class_Registry_PropertyW(class_guid, property, out reg_type,
buffer, ref length, 0, IntPtr.Zero).ToNtStatus().CreateResult(throw_on_error, () => buffer.Detach()));
}
}
