// (C) 2001 Ximian, Inc. http://www.ximian.com
//
+//
+// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
using System;
+using System.Diagnostics;
+using System.Text;
using System.Reflection;
using System.Threading;
using System.Collections;
using System.Runtime.Remoting.Lifetime;
using System.Runtime.CompilerServices;
using System.Runtime.Serialization;
+using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
namespace System.Runtime.Remoting
// Holds the identities of the objects, using uri as index
static Hashtable uri_hash = new Hashtable ();
+ static BinaryFormatter _serializationFormatter;
+ static BinaryFormatter _deserializationFormatter;
+
internal static string app_id;
static int next_id = 1;
+ static readonly BindingFlags methodBindings = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
+
+ // Holds information in xdomain calls. Names are short to minimize serialized size.
+ [Serializable]
+ class CACD {
+ public object d; /* call data */
+ public object c; /* call context */
+ }
static RemotingServices ()
{
+ RemotingSurrogateSelector surrogateSelector = new RemotingSurrogateSelector ();
+ StreamingContext context = new StreamingContext (StreamingContextStates.Remoting, null);
+ _serializationFormatter = new BinaryFormatter (surrogateSelector, context);
+ _deserializationFormatter = new BinaryFormatter (null, context);
+
RegisterInternalChannels ();
- app_id = "/" + Guid.NewGuid().ToString().Replace('-', '_') + "/";
+ app_id = Guid.NewGuid().ToString().Replace('-', '_') + "/";
CreateWellKnownServerIdentity (typeof(RemoteActivator), "RemoteActivationService.rem", WellKnownObjectMode.Singleton);
}
private RemotingServices () {}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
- internal extern static object InternalExecute (MonoMethod method, Object obj,
+ internal extern static object InternalExecute (MethodBase method, Object obj,
Object[] parameters, out object [] out_args);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
{
ReturnMessage result;
- MonoMethod method = (MonoMethod) target.GetType().GetMethod(reqMsg.MethodName, BindingFlags.Public|BindingFlags.NonPublic|BindingFlags.Instance, null, (Type[]) reqMsg.MethodSignature, null);
-
- try {
+ Type tt = target.GetType ();
+ MethodBase method = reqMsg.MethodBase.DeclaringType == tt ? reqMsg.MethodBase : tt.GetMethod(reqMsg.MethodName, BindingFlags.Public|BindingFlags.NonPublic|BindingFlags.Instance, null, (Type[]) reqMsg.MethodSignature, null);
+ object oldContext = CallContext.SetCurrentCallContext (reqMsg.LogicalCallContext);
+
+ try
+ {
object [] out_args;
object rval = InternalExecute (method, target, reqMsg.Args, out out_args);
- result = new ReturnMessage (rval, out_args, out_args.Length,
- reqMsg.LogicalCallContext, reqMsg);
- } catch (Exception e) {
+ // Collect parameters with Out flag from the request message
+ // FIXME: This can be done in the unmanaged side and will be
+ // more efficient
+
+ ParameterInfo[] parameters = method.GetParameters();
+ object[] returnArgs = new object [parameters.Length];
+
+ int n = 0;
+ int noa = 0;
+ foreach (ParameterInfo par in parameters)
+ {
+ if (par.IsOut && !par.ParameterType.IsByRef)
+ returnArgs [n++] = reqMsg.GetArg (par.Position);
+ else if (par.ParameterType.IsByRef)
+ returnArgs [n++] = out_args [noa++];
+ else
+ returnArgs [n++] = null;
+ }
+
+ result = new ReturnMessage (rval, returnArgs, n, CallContext.CreateLogicalCallContext (true), reqMsg);
+ }
+ catch (Exception e)
+ {
result = new ReturnMessage (e, reqMsg);
}
-
+
+ CallContext.RestoreCallContext (oldContext);
return result;
}
if (proxy.GetProxiedType().IsContextful && (proxy.ObjectIdentity is ServerIdentity))
identity = proxy.ObjectIdentity as ServerIdentity;
else
- throw new ArgumentException ("The obj parameter is a proxy");
+ throw new ArgumentException ("The obj parameter is a proxy.");
}
- else
+ else {
identity = obj.ObjectIdentity;
+ obj.ObjectIdentity = null;
+ }
if (identity == null || !identity.IsConnected)
return false;
public static Type GetServerTypeForUri (string uri)
{
- Identity ident = GetIdentityForUri (uri);
+ ServerIdentity ident = GetIdentityForUri (uri) as ServerIdentity;
if (ident == null) return null;
return ident.ObjectType;
}
public static string GetObjectUri (MarshalByRefObject obj)
{
Identity ident = GetObjectIdentity(obj);
- if (ident != null) return ident.ObjectUri;
+ if (ident is ClientIdentity) return ((ClientIdentity)ident).TargetUri;
+ else if (ident != null) return ident.ObjectUri;
else return null;
}
public static object Unmarshal (ObjRef objref, bool fRefine)
{
- // FIXME: use type name when fRefine==true
-
Type classToProxy = fRefine ? objref.ServerType : typeof (MarshalByRefObject);
+ if (classToProxy == null) classToProxy = typeof (MarshalByRefObject);
if (objref.IsReferenceToWellKnow)
return GetRemoteObject(objref, classToProxy);
if (identity != null)
{
- if (identity.ObjectType.IsContextful && !identity.IsConnected)
+ if (proxy.GetProxiedType().IsContextful && !identity.IsConnected)
{
// Unregistered local contextbound object. Register now.
ClientActivatedIdentity cboundIdentity = (ClientActivatedIdentity)identity;
return cboundIdentity.CreateObjRef(requested_type);
}
else if (uri != null)
- throw new RemotingException ("It is not possible marshal a proxy of a remote object");
+ throw new RemotingException ("It is not possible marshal a proxy of a remote object.");
return proxy.ObjectIdentity.CreateObjRef(requested_type);
}
if (uri == null)
{
- uri = NewUri();
- CreateClientActivatedServerIdentity (obj, requested_type, uri);
+ if (obj.ObjectIdentity == null)
+ {
+ uri = NewUri();
+ CreateClientActivatedServerIdentity (obj, requested_type, uri);
+ }
}
else
{
- ClientActivatedIdentity identity = uri_hash [uri] as ClientActivatedIdentity;
+ ClientActivatedIdentity identity = GetIdentityForUri ("/" + uri) as ClientActivatedIdentity;
if (identity == null || obj != identity.GetServerObject())
CreateClientActivatedServerIdentity (obj, requested_type, uri);
}
- return obj.CreateObjRef(requested_type);
+ if (IsTransparentProxy (obj))
+ return RemotingServices.GetRealProxy(obj).ObjectIdentity.CreateObjRef (requested_type);
+ else
+ return obj.CreateObjRef(requested_type);
}
static string NewUri ()
{
- return app_id + Environment.TickCount + "_" + next_id++;
+ int n = Interlocked.Increment (ref next_id);
+ return app_id + Environment.TickCount + "_" + n + ".rem";
}
public static RealProxy GetRealProxy (object proxy)
{
- if (!IsTransparentProxy(proxy)) throw new RemotingException("Cannot get the real proxy from an object that is not a transparent proxy");
+ if (!IsTransparentProxy(proxy)) throw new RemotingException("Cannot get the real proxy from an object that is not a transparent proxy.");
return (RealProxy)((TransparentProxy)proxy)._rp;
}
{
Type type = Type.GetType (msg.TypeName);
if (type == null)
- throw new RemotingException ("Type '" + msg.TypeName + "' not found!");
-
- BindingFlags bflags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
- if (msg.MethodSignature == null)
- return type.GetMethod (msg.MethodName, bflags);
+ throw new RemotingException ("Type '" + msg.TypeName + "' not found.");
+
+ return GetMethodBaseFromName (type, msg.MethodName, (Type[]) msg.MethodSignature);
+ }
+
+ internal static MethodBase GetMethodBaseFromName (Type type, string methodName, Type[] signature)
+ {
+ if (type.IsInterface) {
+ return FindInterfaceMethod (type, methodName, signature);
+ }
+ else {
+ MethodBase method = null;
+ if (signature == null)
+ method = type.GetMethod (methodName, methodBindings);
+ else
+ method = type.GetMethod (methodName, methodBindings, null, (Type[]) signature, null);
+
+ if (method != null)
+ return method;
+
+ if (signature == null)
+ return type.GetConstructor (methodBindings, null, Type.EmptyTypes, null);
+ else
+ return type.GetConstructor (methodBindings, null, signature, null);
+ }
+ }
+
+ static MethodBase FindInterfaceMethod (Type type, string methodName, Type[] signature)
+ {
+ MethodBase method = null;
+
+ if (signature == null)
+ method = type.GetMethod (methodName, methodBindings);
else
- return type.GetMethod (msg.MethodName, bflags, null, (Type[]) msg.MethodSignature, null);
+ method = type.GetMethod (methodName, methodBindings, null, signature, null);
+
+ if (method != null) return method;
+
+ foreach (Type t in type.GetInterfaces ()) {
+ method = FindInterfaceMethod (t, methodName, signature);
+ if (method != null) return method;
+ }
+
+ return null;
}
public static void GetObjectData(object obj, SerializationInfo info, StreamingContext context)
else return ident.CreateObjRef(null);
}
+ public static object GetLifetimeService (MarshalByRefObject obj)
+ {
+ if (obj == null) return null;
+ return obj.GetLifetimeService ();
+ }
+
+ public static IMessageSink GetEnvoyChainForProxy (MarshalByRefObject obj)
+ {
+ if (IsTransparentProxy(obj))
+ return ((ClientIdentity)GetRealProxy (obj).ObjectIdentity).EnvoySink;
+ else
+ throw new ArgumentException ("obj must be a proxy.","obj");
+ }
+
[MonoTODO]
+ [Conditional ("REMOTING_PERF")]
+ public static void LogRemotingStage (int stage)
+ {
+ throw new NotImplementedException ();
+ }
+
public static string GetSessionIdForMethodMessage(IMethodMessage msg)
{
- throw new NotImplementedException ();
+ // It seems that this it what MS returns.
+ return msg.Uri;
}
public static bool IsMethodOverloaded(IMethodMessage msg)
{
- Type type = msg.MethodBase.DeclaringType;
- MemberInfo[] members = type.GetMember (msg.MethodName, MemberTypes.Method, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
- return members.Length > 1;
+ const BindingFlags bfinst = BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance;
+ MonoType type = (MonoType) msg.MethodBase.DeclaringType;
+ return type.GetMethodsByName (msg.MethodName, bfinst, false, type).Length > 1;
}
public static bool IsObjectOutOfAppDomain(object tp)
{
+ // TODO: use internal call for better performance
Identity ident = GetObjectIdentity((MarshalByRefObject)tp);
- if (ident != null) return !ident.IsFromThisAppDomain;
- else return false;
+ return ident is ClientIdentity;
}
public static bool IsObjectOutOfContext(object tp)
{
- ServerIdentity ident = GetObjectIdentity((MarshalByRefObject)tp) as ServerIdentity;
- if (ident != null) return ident.Context != System.Threading.Thread.CurrentContext;
- else return false;
+ // TODO: use internal call for better performance
+ Identity ident = GetObjectIdentity((MarshalByRefObject)tp);
+ if (ident == null) return false;
+
+ ServerIdentity sident = ident as ServerIdentity;
+ if (sident != null) return sident.Context != System.Threading.Thread.CurrentContext;
+ else return true;
}
public static bool IsOneWay(MethodBase method)
{
- // TODO: use internal call for better performance
- object[] atts = method.GetCustomAttributes (typeof (OneWayAttribute), false);
- return atts.Length > 0;
+ return method.IsDefined (typeof (OneWayAttribute), false);
}
- public static bool IsAsyncMessage(IMessage msg)
+ internal static bool IsAsyncMessage(IMessage msg)
{
if (! (msg is MonoMethodMessage)) return false;
else if (((MonoMethodMessage)msg).IsAsync) return true;
public static void SetObjectUriForMarshal(MarshalByRefObject obj, string uri)
{
- if (IsTransparentProxy (obj)) throw new RemotingException ("SetObjectUriForMarshal method should only be called for MarshalByRefObjects that exist in the current AppDomain.");
+ if (IsTransparentProxy (obj)) {
+ RealProxy proxy = RemotingServices.GetRealProxy(obj);
+ Identity identity = proxy.ObjectIdentity;
+
+ if (identity != null && !(identity is ServerIdentity) && !proxy.GetProxiedType().IsContextful)
+ throw new RemotingException ("SetObjectUriForMarshal method should only be called for MarshalByRefObjects that exist in the current AppDomain.");
+ }
+
Marshal (obj, uri);
}
{
lock (uri_hash)
{
- return (Identity)uri_hash [uri];
+ return (Identity)uri_hash [GetNormalizedUri(uri)];
}
}
return obj.ObjectIdentity;
}
- internal static ClientIdentity GetOrCreateClientIdentity(ObjRef objRef, Type proxyType)
+ internal static ClientIdentity GetOrCreateClientIdentity(ObjRef objRef, Type proxyType, out object clientProxy)
{
// This method looks for an identity for the given url.
// If an identity is not found, it creates the identity and
// It will also get the object uri from the url.
object channelData = objRef.ChannelInfo != null ? objRef.ChannelInfo.ChannelData : null;
- string url = (channelData == null) ? objRef.URI : null;
string objectUri;
- IMessageSink sink = GetClientChannelSinkChain (url, channelData, out objectUri);
+ IMessageSink sink = GetClientChannelSinkChain (objRef.URI, channelData, out objectUri);
if (objectUri == null) objectUri = objRef.URI;
lock (uri_hash)
{
- ClientIdentity identity = uri_hash [objRef.URI] as ClientIdentity;
- if (identity != null)
- return identity; // Object already registered
+ clientProxy = null;
+ string uri = GetNormalizedUri (objRef.URI);
+
+ ClientIdentity identity = uri_hash [uri] as ClientIdentity;
+ if (identity != null)
+ {
+ // Object already registered
+ clientProxy = identity.ClientProxy;
+ if (clientProxy != null) return identity;
+
+ // The proxy has just been GCed, so its identity cannot
+ // be reused. Just dispose it.
+ DisposeIdentity (identity);
+ }
// Creates an identity and a proxy for the remote object
identity = new ClientIdentity (objectUri, objRef);
identity.ChannelSink = sink;
+ // Registers the identity
+ uri_hash [uri] = identity;
+
if (proxyType != null)
{
RemotingProxy proxy = new RemotingProxy (proxyType, identity);
- identity.ClientProxy = (MarshalByRefObject) proxy.GetTransparentProxy();
+ CrossAppDomainSink cds = sink as CrossAppDomainSink;
+ if (cds != null)
+ proxy.SetTargetDomain (cds.TargetDomainId);
+
+ clientProxy = proxy.GetTransparentProxy();
+ identity.ClientProxy = (MarshalByRefObject) clientProxy;
}
- // Registers the identity
- uri_hash [objRef.URI] = identity;
return identity;
}
}
IMessageSink sink = ChannelServices.CreateClientChannelSinkChain (url, channelData, out objectUri);
if (sink == null)
{
- if (url != null) \r
+ if (url != null)
{
string msg = String.Format ("Cannot create channel sink to connect to URL {0}. An appropriate channel has probably not been registered.", url);
throw new RemotingException (msg);
}
- else \r
+ else
{
string msg = String.Format ("Cannot create channel sink to connect to the remote object. An appropriate channel has probably not been registered.", url);
throw new RemotingException (msg);
lock (uri_hash)
{
if (uri_hash.ContainsKey (identity.ObjectUri))
- throw new RemotingException ("Uri already in use: " + identity.ObjectUri);
+ throw new RemotingException ("Uri already in use: " + identity.ObjectUri + ".");
uri_hash[identity.ObjectUri] = identity;
}
internal static object GetProxyForRemoteObject (ObjRef objref, Type classToProxy)
{
- ClientActivatedIdentity identity = uri_hash [objref.URI] as ClientActivatedIdentity;
+ ClientActivatedIdentity identity = GetIdentityForUri (objref.URI) as ClientActivatedIdentity;
if (identity != null) return identity.GetServerObject ();
else return GetRemoteObject (objref, classToProxy);
}
internal static object GetRemoteObject(ObjRef objRef, Type proxyType)
{
- ClientIdentity id = GetOrCreateClientIdentity (objRef, proxyType);
- return id.ClientProxy;
+ object proxy;
+ GetOrCreateClientIdentity (objRef, proxyType, out proxy);
+ return proxy;
+ }
+
+ // This method is called by the runtime
+ internal static object GetServerObject (string uri)
+ {
+ ClientActivatedIdentity identity = GetIdentityForUri (uri) as ClientActivatedIdentity;
+ if (identity == null) throw new RemotingException ("Server for uri '" + uri + "' not found");
+ return identity.GetServerObject ();
}
+ // This method is called by the runtime
+ internal static byte[] SerializeCallData (object obj)
+ {
+ LogicalCallContext ctx = CallContext.CreateLogicalCallContext (false);
+ if (ctx != null) {
+ CACD cad = new CACD ();
+ cad.d = obj;
+ cad.c = ctx;
+ obj = cad;
+ }
+
+ if (obj == null) return null;
+ MemoryStream ms = new MemoryStream ();
+ _serializationFormatter.Serialize (ms, obj);
+ return ms.ToArray ();
+ }
+
+ // This method is called by the runtime
+ internal static object DeserializeCallData (byte[] array)
+ {
+ if (array == null) return null;
+
+ MemoryStream ms = new MemoryStream (array);
+ object obj = _deserializationFormatter.Deserialize (ms);
+
+ if (obj is CACD) {
+ CACD cad = (CACD) obj;
+ obj = cad.d;
+ CallContext.UpdateCurrentCallContext ((LogicalCallContext) cad.c);
+ }
+ return obj;
+ }
+
+ // This method is called by the runtime
+ internal static byte[] SerializeExceptionData (Exception ex)
+ {
+ try {
+ int retry = 4;
+
+ do {
+ try {
+ MemoryStream ms = new MemoryStream ();
+ _serializationFormatter.Serialize (ms, ex);
+ return ms.ToArray ();
+ }
+ catch (Exception e) {
+ if (e is ThreadAbortException) {
+ Thread.ResetAbort ();
+ retry = 5;
+ ex = e;
+ }
+ else if (retry == 2) {
+ ex = new Exception ();
+ ex.SetMessage (e.Message);
+ ex.SetStackTrace (e.StackTrace);
+ }
+ else
+ ex = e;
+ }
+ retry--;
+ }
+ while (retry > 0);
+
+ return null;
+ }
+ catch (Exception tex)
+ {
+ byte[] data = SerializeExceptionData (tex);
+ Thread.ResetAbort ();
+ return data;
+ }
+ }
+
internal static object GetDomainProxy(AppDomain domain)
{
byte[] data = null;
Context currentContext = Thread.CurrentContext;
- AppDomain currentDomain = AppDomain.InternalSetDomain (domain);
- try
+
+ try
{
- data = domain.GetMarshalledDomainObjRef ();
+ data = (byte[])AppDomain.InvokeInDomain (domain, typeof (AppDomain).GetMethod ("GetMarshalledDomainObjRef", BindingFlags.Instance|BindingFlags.NonPublic), domain, null);
}
- finally
+ finally
{
- AppDomain.InternalSetDomain (currentDomain);
AppDomain.InternalSetContext (currentContext);
- }
+ }
MemoryStream stream = new MemoryStream (data);
ObjRef appref = (ObjRef) CADSerializer.DeserializeObject (stream);
CrossAppDomainChannel.RegisterCrossAppDomainChannel();
}
- internal static void DisposeIdentity (ServerIdentity ident)
+ internal static void DisposeIdentity (Identity ident)
{
- uri_hash.Remove (ident.ObjectUri);
+ lock (uri_hash)
+ {
+ if (!ident.Disposed) {
+ ClientIdentity clientId = ident as ClientIdentity;
+ if (clientId != null)
+ uri_hash.Remove (GetNormalizedUri (clientId.TargetUri));
+ else
+ uri_hash.Remove (ident.ObjectUri);
+
+ ident.Disposed = true;
+ }
+ }
}
internal static Identity GetMessageTargetIdentity (IMessage msg)
lock (uri_hash)
{
- return uri_hash [((IMethodMessage)msg).Uri] as ServerIdentity;
+ string uri = GetNormalizedUri (((IMethodMessage)msg).Uri);
+ return uri_hash [uri] as ServerIdentity;
}
}
if (msg is IInternalMessage)
((IInternalMessage)msg).TargetIdentity = ident;
}
+
+ internal static bool UpdateOutArgObject (ParameterInfo pi, object local, object remote)
+ {
+ if (local is StringBuilder)
+ {
+ StringBuilder sb = local as StringBuilder;
+ sb.Remove (0, sb.Length);
+ sb.Append (remote.ToString());
+ return true;
+ }
+ else if (pi.ParameterType.IsArray && ((Array)local).Rank == 1)
+ {
+ Array alocal = (Array) local;
+ if (alocal.Rank == 1)
+ {
+ Array.Copy ((Array) remote, alocal, alocal.Length);
+ return true;
+ }
+ else
+ {
+ // TODO
+ }
+ }
+ return false;
+ }
+
+ static string GetNormalizedUri (string uri)
+ {
+ if (uri.StartsWith ("/")) return uri.Substring (1);
+ else return uri;
+ }
#endregion
}
projects / mono.git / blobdiff