public void DoCallBack(CrossContextDelegate deleg)
{
/*DBG Console.WriteLine("public DoCallBack: targetCtx: "
+ Int32.Format(this.InternalContextID,"x")); DBG*/
if (deleg == null)
{
throw new ArgumentNullException("deleg");
}
if ((_ctxFlags & CTX_FROZEN) == 0)
{
throw new RemotingException(
Environment.GetResourceString(
"Remoting_Contexts_ContextNotFrozenForCallBack"));
}
Context currCtx = Thread.CurrentContext;
if (currCtx == this)
{
// We are already in the target context, just execute deleg
// NOTE: If in the future we decide to leave the context
// and reenter it for this case we will need to change
// Context::RequestCallBack method in VM also!
deleg();
}
else
{
// We pass 0 for target domain ID for x-context case.
currCtx.DoCallBackGeneric(this.InternalContextID, deleg);
GC.KeepAlive(this);
}
}
} // DoCallBackFromEE
// This is called by both the call back functions above.
internal void DoCallBackGeneric(
IntPtr targetCtxID, CrossContextDelegate deleg)
{
TransitionCall msgCall = new TransitionCall(targetCtxID, deleg);
Message.PropagateCallContextFromThreadToMessage(msgCall);
//DBG Console.WriteLine("CallBackGeneric starting!");
IMessage retMsg = this.GetClientContextChain().SyncProcessMessage(msgCall);
if (null != retMsg)
{
Message.PropagateCallContextFromMessageToThread(retMsg);
}
IMethodReturnMessage msg = retMsg as IMethodReturnMessage;
if (null != msg)
{
if (msg.Exception != null)
{
throw msg.Exception;
}
}
//DBG Console.WriteLine("CallBackGeneric finished!");
}
/// <summary>Executes code in another context.</summary>
/// <param name="deleg">The delegate used to request the callback. </param>
/// <PermissionSet>
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="Infrastructure" />
/// </PermissionSet>
public void DoCallBack(CrossContextDelegate deleg)
{
lock (this)
{
if (this.callback_object == null)
{
Context newContext = Context.SwitchToContext(this);
this.callback_object = new ContextCallbackObject();
Context.SwitchToContext(newContext);
}
}
this.callback_object.DoCallBack(deleg);
}
internal void DoCallBackGeneric(IntPtr targetCtxID, CrossContextDelegate deleg)
{
TransitionCall transitionCall = new TransitionCall(targetCtxID, deleg);
Message.PropagateCallContextFromThreadToMessage((IMessage)transitionCall);
IMessage msg = this.GetClientContextChain().SyncProcessMessage((IMessage)transitionCall);
if (msg != null)
{
Message.PropagateCallContextFromMessageToThread(msg);
}
IMethodReturnMessage methodReturnMessage = msg as IMethodReturnMessage;
if (methodReturnMessage != null && methodReturnMessage.Exception != null)
{
throw methodReturnMessage.Exception;
}
}
internal static void DoCallBackFromEE(IntPtr targetCtxID, IntPtr privateData, int targetDomainID)
{
if (targetDomainID == 0)
{
CrossContextDelegate deleg = new CrossContextDelegate(new CallBackHelper(privateData, true, targetDomainID).Func);
Thread.CurrentContext.DoCallBackGeneric(targetCtxID, deleg);
}
else
{
TransitionCall transitionCall = new TransitionCall(targetCtxID, privateData, targetDomainID);
Message.PropagateCallContextFromThreadToMessage((IMessage)transitionCall);
IMessage msg = Thread.CurrentContext.GetClientContextChain().SyncProcessMessage((IMessage)transitionCall);
Message.PropagateCallContextFromMessageToThread(msg);
IMethodReturnMessage methodReturnMessage = msg as IMethodReturnMessage;
if (methodReturnMessage != null && methodReturnMessage.Exception != null)
{
throw methodReturnMessage.Exception;
}
}
}
public void DoCallBack(CrossContextDelegate deleg)
{
if (deleg == null)
{
throw new ArgumentNullException("deleg");
}
if ((this._ctxFlags & 2) == 0)
{
throw new RemotingException(Environment.GetResourceString("Remoting_Contexts_ContextNotFrozenForCallBack"));
}
Context currentContext = Thread.CurrentContext;
if (currentContext == this)
{
deleg();
return;
}
currentContext.DoCallBackGeneric(this.InternalContextID, deleg);
GC.KeepAlive(this);
}
// This is called when EE needs to do a transition and execute some
// code. Before calling, EE determines if this is a x-domain case.
// targetDomainID will be 0 if it is a simple x-context call.
internal static void DoCallBackFromEE(
IntPtr targetCtxID, IntPtr privateData, int targetDomainID)
{
BCLDebug.Assert(targetCtxID != IntPtr.Zero, "Bad transition context");
/*DBG Console.WriteLine("private DoCallBackFromEE: targetCtx: "
+ Int32.Format(targetCtxID,"x")
+ " PvtData: " + Int32.Format(privateData,"x"));DBG*/
if (targetDomainID == 0)
{
CallBackHelper cb = new CallBackHelper(
privateData,
true /*fromEE*/,
targetDomainID);
CrossContextDelegate ctxDel = new CrossContextDelegate(cb.Func);
Thread.CurrentContext.DoCallBackGeneric(targetCtxID, ctxDel);
}
else
{
// for x-appdomain calls, we can't pass a delegate since that
// would require us to deserialize it on the other side which
// is not allowed for non-public methods.
TransitionCall msgCall = new TransitionCall(targetCtxID, privateData, targetDomainID);
Message.PropagateCallContextFromThreadToMessage(msgCall);
//DBG Console.WriteLine("CallBackGeneric starting!");
IMessage retMsg = Thread.CurrentContext.GetClientContextChain().SyncProcessMessage(msgCall);
Message.PropagateCallContextFromMessageToThread(retMsg);
IMethodReturnMessage msg = retMsg as IMethodReturnMessage;
if (null != msg)
{
if (msg.Exception != null)
{
throw msg.Exception;
}
}
}
} // DoCallBackFromEE
public void DoCallBack(CrossContextDelegate deleg)
{
Contract.Requires(deleg != null);
}
public void DoCallBack(CrossContextDelegate deleg)
{
}
public void DoCallBack(CrossContextDelegate deleg)
{
throw new NotImplementedException();
}
