mirror of
https://github.com/openhardwaremonitor/openhardwaremonitor
synced 2025-08-22 18:07:09 +00:00
107 lines
4.1 KiB
C#
107 lines
4.1 KiB
C#
/*
|
|
|
|
Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
|
|
The contents of this file are subject to the Mozilla Public License Version
|
|
1.1 (the "License"); you may not use this file except in compliance with
|
|
the License. You may obtain a copy of the License at
|
|
|
|
http://www.mozilla.org/MPL/
|
|
|
|
Software distributed under the License is distributed on an "AS IS" basis,
|
|
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
for the specific language governing rights and limitations under the License.
|
|
|
|
The Original Code is the Open Hardware Monitor code.
|
|
|
|
The Initial Developer of the Original Code is
|
|
Michael Möller <m.moeller@gmx.ch>.
|
|
Portions created by the Initial Developer are Copyright (C) 2009-2010
|
|
the Initial Developer. All Rights Reserved.
|
|
|
|
Contributor(s):
|
|
|
|
Alternatively, the contents of this file may be used under the terms of
|
|
either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
in which case the provisions of the GPL or the LGPL are applicable instead
|
|
of those above. If you wish to allow use of your version of this file only
|
|
under the terms of either the GPL or the LGPL, and not to allow others to
|
|
use your version of this file under the terms of the MPL, indicate your
|
|
decision by deleting the provisions above and replace them with the notice
|
|
and other provisions required by the GPL or the LGPL. If you do not delete
|
|
the provisions above, a recipient may use your version of this file under
|
|
the terms of any one of the MPL, the GPL or the LGPL.
|
|
|
|
*/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Reflection;
|
|
using System.Reflection.Emit;
|
|
using System.Runtime.InteropServices;
|
|
|
|
namespace OpenHardwareMonitor.Hardware {
|
|
|
|
internal static class PInvokeDelegateFactory {
|
|
|
|
private static readonly ModuleBuilder moduleBuilder =
|
|
AppDomain.CurrentDomain.DefineDynamicAssembly(
|
|
new AssemblyName("PInvokeDelegateFactoryInternalAssembly"),
|
|
AssemblyBuilderAccess.Run).DefineDynamicModule(
|
|
"PInvokeDelegateFactoryInternalModule");
|
|
|
|
private static readonly IDictionary<DllImportAttribute, Type> wrapperTypes =
|
|
new Dictionary<DllImportAttribute, Type>();
|
|
|
|
public static void CreateDelegate<T>(DllImportAttribute dllImportAttribute,
|
|
out T newDelegate) where T : class
|
|
{
|
|
Type wrapperType;
|
|
wrapperTypes.TryGetValue(dllImportAttribute, out wrapperType);
|
|
|
|
if (wrapperType == null) {
|
|
wrapperType = CreateWrapperType(typeof(T), dllImportAttribute);
|
|
wrapperTypes.Add(dllImportAttribute, wrapperType);
|
|
}
|
|
|
|
newDelegate = Delegate.CreateDelegate(typeof(T), wrapperType,
|
|
dllImportAttribute.EntryPoint) as T;
|
|
}
|
|
|
|
|
|
private static Type CreateWrapperType(Type delegateType,
|
|
DllImportAttribute dllImportAttribute) {
|
|
|
|
TypeBuilder typeBuilder = moduleBuilder.DefineType(
|
|
"PInvokeDelegateFactoryInternalWrapperType" + wrapperTypes.Count);
|
|
|
|
MethodInfo methodInfo = delegateType.GetMethod("Invoke");
|
|
|
|
ParameterInfo[] parameterInfos = methodInfo.GetParameters();
|
|
int parameterCount = parameterInfos.GetLength(0);
|
|
|
|
Type[] parameterTypes = new Type[parameterCount];
|
|
for (int i = 0; i < parameterCount; i++)
|
|
parameterTypes[i] = parameterInfos[i].ParameterType;
|
|
|
|
MethodBuilder methodBuilder = typeBuilder.DefinePInvokeMethod(
|
|
dllImportAttribute.EntryPoint, dllImportAttribute.Value,
|
|
MethodAttributes.Public | MethodAttributes.Static |
|
|
MethodAttributes.PinvokeImpl, CallingConventions.Standard,
|
|
methodInfo.ReturnType, parameterTypes,
|
|
dllImportAttribute.CallingConvention,
|
|
dllImportAttribute.CharSet);
|
|
|
|
foreach (ParameterInfo parameterInfo in parameterInfos)
|
|
methodBuilder.DefineParameter(parameterInfo.Position + 1,
|
|
parameterInfo.Attributes, parameterInfo.Name);
|
|
|
|
if (dllImportAttribute.PreserveSig)
|
|
methodBuilder.SetImplementationFlags(MethodImplAttributes.PreserveSig);
|
|
|
|
return typeBuilder.CreateType();
|
|
}
|
|
}
|
|
}
|