private IMethodInvocationHandler WaitForRealMethodInvocationHandler()
{
// Wait for the real invocation handler to finish being contructed
m_CreatorInterfaceInvocationHandler.m_FinishedEvent.WaitOne();
IMethodInvocationHandler realMethodInvocationHandler = m_CreatorInterfaceInvocationHandler.m_RealInvocationHandler.GetInvocationHandlerFor(m_MethodCaller, m_ReturnType, m_TargetMethod);
return(realMethodInvocationHandler);
}
/// <summary>
/// Creates a new method that has the same signature as an existing one, but just calls a methodInvocationHandler when it's called.
/// </summary>
/// <param name="methodInvocationHandler">The thing that handles the call</param>
/// <param name="signature">A method whose signature we want to duplicate</param>
/// <param name="delegateType">The specific type of the delegate you'd like to create (it's safe to cast the return value to this type)</param>
public Delegate CreateDelegateProxy(IMethodInvocationHandler methodInvocationHandler, MethodInfo signature, Type delegateType)
{
Type proxyType;
lock (m_Sync)
{
m_DelegateProxyCache.TryGetValue(delegateType, out proxyType);
}
if (proxyType == null)
{
TypeBuilder typeBuilder = GetFreshType();
// Create a field in which to put the IMethodInvocationHandler
FieldBuilder invocationHandlerField = typeBuilder.DefineField(c_FieldNameForInvocationHandler,
typeof(IMethodInvocationHandler),
FieldAttributes.Private);
Type[] parameterTypes = GetParameterTypes(signature);
MethodBuilder methodBuilder = typeBuilder.DefineMethod(c_DelegateMethodName, MethodAttributes.Public,
signature.ReturnType, parameterTypes);
BuildForwarderMethod(methodBuilder, parameterTypes, m_InvokeHappenedMethod, invocationHandlerField);
// Finalise the type
proxyType = typeBuilder.CreateType();
// Cache it
lock (m_Sync)
{
m_DelegateProxyCache[delegateType] = proxyType;
}
}
object proxyInstance = Activator.CreateInstance(proxyType);
// Put the invocation handler in a field
FieldInfo writeableInvocationHandlerField = proxyType.GetField(c_FieldNameForInvocationHandler, BindingFlags.Instance | BindingFlags.NonPublic);
writeableInvocationHandlerField.SetValue(proxyInstance, methodInvocationHandler);
return(Delegate.CreateDelegate(delegateType, proxyInstance, proxyType.GetMethod(c_DelegateMethodName)));
}
/// <summary>
/// Creates a new method that has the same signature as an existing one, but just calls a methodInvocationHandler when it's called.
/// </summary>
/// <param name="methodInvocationHandler">The thing that handles the call</param>
/// <param name="signature">A method whose signature we want to duplicate</param>
/// <param name="delegateType">The specific type of the delegate you'd like to create (it's safe to cast the return value to this type)</param>
public Delegate CreateDelegateProxy(IMethodInvocationHandler methodInvocationHandler, MethodInfo signature, Type delegateType)
{
Type proxyType;
lock (m_Sync)
{
m_DelegateProxyCache.TryGetValue(delegateType, out proxyType);
}
if (proxyType == null)
{
TypeBuilder typeBuilder = GetFreshType();
// Create a field in which to put the IMethodInvocationHandler
FieldBuilder invocationHandlerField = typeBuilder.DefineField(c_FieldNameForInvocationHandler,
typeof (IMethodInvocationHandler),
FieldAttributes.Private);
Type[] parameterTypes = GetParameterTypes(signature);
MethodBuilder methodBuilder = typeBuilder.DefineMethod(c_DelegateMethodName, MethodAttributes.Public,
signature.ReturnType, parameterTypes);
BuildForwarderMethod(methodBuilder, parameterTypes, m_InvokeHappenedMethod, invocationHandlerField);
// Finalise the type
proxyType = typeBuilder.CreateType();
// Cache it
lock (m_Sync)
{
m_DelegateProxyCache[delegateType] = proxyType;
}
}
object proxyInstance = Activator.CreateInstance(proxyType);
// Put the invocation handler in a field
FieldInfo writeableInvocationHandlerField = proxyType.GetField(c_FieldNameForInvocationHandler, BindingFlags.Instance | BindingFlags.NonPublic);
writeableInvocationHandlerField.SetValue(proxyInstance, methodInvocationHandler);
return Delegate.CreateDelegate(delegateType, proxyInstance, proxyType.GetMethod(c_DelegateMethodName));
}
