internal static ServerIdentity FindOrCreateServerIdentity(MarshalByRefObject obj, string objURI, int flags)
{
ServerIdentity idObj = null;
bool flag;
idObj = (ServerIdentity)MarshalByRefObject.GetIdentity(obj, out flag);
if (idObj == null)
{
Context serverCtx = null;
if (obj is ContextBoundObject)
{
serverCtx = Thread.CurrentContext;
}
else
{
serverCtx = DefaultContext;
}
ServerIdentity id = new ServerIdentity(obj, serverCtx);
if (flag)
{
idObj = obj.__RaceSetServerIdentity(id);
}
else
{
RealProxy realProxy = null;
realProxy = RemotingServices.GetRealProxy(obj);
realProxy.IdentityObject = id;
idObj = (ServerIdentity)realProxy.IdentityObject;
}
}
if (IdOps.bStrongIdentity(flags))
{
ReaderWriterLock tableLock = TableLock;
bool flag2 = !tableLock.IsWriterLockHeld;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
if (flag2)
{
tableLock.AcquireWriterLock(0x7fffffff);
}
if ((idObj.ObjURI == null) || !idObj.IsInIDTable())
{
SetIdentity(idObj, objURI, DuplicateIdentityOption.Unique);
}
if (idObj.IsDisconnected())
{
idObj.SetFullyConnected();
}
}
finally
{
if (flag2 && tableLock.IsWriterLockHeld)
{
tableLock.ReleaseWriterLock();
}
}
}
return(idObj);
}
internal IMessageSink GetServerObjectChain(out MarshalByRefObject obj)
{
obj = null;
if (!this.IsSingleCall())
{
if (this._serverObjectChain == null)
{
bool lockTaken = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
Monitor.Enter(this, ref lockTaken);
if (this._serverObjectChain == null)
{
MarshalByRefObject tPOrObject = base.TPOrObject;
this._serverObjectChain = this._srvCtx.CreateServerObjectChain(tPOrObject);
}
}
finally
{
if (lockTaken)
{
Monitor.Exit(this);
}
}
}
return(this._serverObjectChain);
}
MarshalByRefObject serverObj = null;
IMessageSink sink = null;
if (((base._tpOrObject != null) && (this._firstCallDispatched == 0)) && (Interlocked.CompareExchange(ref this._firstCallDispatched, 1, 0) == 0))
{
serverObj = (MarshalByRefObject)base._tpOrObject;
sink = this._serverObjectChain;
if (sink == null)
{
sink = this._srvCtx.CreateServerObjectChain(serverObj);
}
}
else
{
serverObj = (MarshalByRefObject)Activator.CreateInstance(this._srvType, true);
if (RemotingServices.GetObjectUri(serverObj) != null)
{
throw new RemotingException(string.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Remoting_WellKnown_CtorCantMarshal"), new object[] { base.URI }));
}
if (!RemotingServices.IsTransparentProxy(serverObj))
{
serverObj.__RaceSetServerIdentity(this);
}
else
{
RemotingServices.GetRealProxy(serverObj).IdentityObject = this;
}
sink = this._srvCtx.CreateServerObjectChain(serverObj);
}
obj = serverObj;
return(sink);
}
internal static ServerIdentity FindOrCreateServerIdentity(MarshalByRefObject obj, string objURI, int flags)
{
bool fServer;
ServerIdentity serverIdentity1 = (ServerIdentity)MarshalByRefObject.GetIdentity(obj, out fServer);
if (serverIdentity1 == null)
{
Context serverCtx = !(obj is ContextBoundObject) ? IdentityHolder.DefaultContext : Thread.CurrentContext;
ServerIdentity id = new ServerIdentity(obj, serverCtx);
if (fServer)
{
serverIdentity1 = obj.__RaceSetServerIdentity(id);
}
else
{
RealProxy realProxy = RemotingServices.GetRealProxy((object)obj);
ServerIdentity serverIdentity2 = id;
realProxy.IdentityObject = (Identity)serverIdentity2;
serverIdentity1 = (ServerIdentity)realProxy.IdentityObject;
}
if (IdOps.bIsInitializing(flags))
{
serverIdentity1.IsInitializing = true;
}
}
if (IdOps.bStrongIdentity(flags))
{
ReaderWriterLock tableLock = IdentityHolder.TableLock;
bool flag = !tableLock.IsWriterLockHeld;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
if (flag)
{
tableLock.AcquireWriterLock(int.MaxValue);
}
if (serverIdentity1.ObjURI == null || !serverIdentity1.IsInIDTable())
{
IdentityHolder.SetIdentity((Identity)serverIdentity1, objURI, DuplicateIdentityOption.Unique);
}
if (serverIdentity1.IsDisconnected())
{
serverIdentity1.SetFullyConnected();
}
}
finally
{
if (flag && tableLock.IsWriterLockHeld)
{
tableLock.ReleaseWriterLock();
}
}
}
return(serverIdentity1);
}
} // CasualResolveReference
//
//
// This is typically called when we need to create/establish
// an identity for a serverObject.
internal static ServerIdentity FindOrCreateServerIdentity(
MarshalByRefObject obj, String objURI, int flags)
{
Message.DebugOut("Entered FindOrCreateServerIdentity \n");
ServerIdentity srvID = null;
bool bLock = false;
try
{
bool fServer;
srvID = (ServerIdentity)MarshalByRefObject.GetIdentity(obj, out fServer);
if (srvID == null)
{
// Create a new server identity and add it to the
// table. IdentityHolder will take care of races
Context serverCtx = null;
if (obj is ContextBoundObject)
{
serverCtx = Thread.CurrentContext;
}
else
{
serverCtx = DefaultContext;
}
BCLDebug.Assert(null != serverCtx, "null != serverCtx");
ServerIdentity serverID = new ServerIdentity(obj, serverCtx);
// Set the identity depending on whether we have the server or proxy
if (fServer)
{
srvID = obj.__RaceSetServerIdentity(serverID);
BCLDebug.Assert(srvID == MarshalByRefObject.GetIdentity(obj), "Bad ID state!");
}
else
{
RealProxy rp = null;
rp = RemotingServices.GetRealProxy(obj);
BCLDebug.Assert(null != rp, "null != rp");
rp.IdentityObject = serverID;
srvID = (ServerIdentity)rp.IdentityObject;
}
Message.DebugOut("Created ServerIdentity \n");
}
// NOTE: for purely x-context cases we never execute this ...
// the server ID is not put in the ID table.
if (IdOps.bStrongIdentity(flags))
{
TableLock.AcquireWriterLock(INFINITE);
bLock = true;
// It is possible that we are marshaling out of this app-domain
// for the first time. We need to do two things
// (1) If there is no URI associated with the identity then go ahead
// and generate one.
// (2) Add the identity to the URI -> Identity map if not already present
// (For purely x-context cases we don't need the URI)
// (3) If the object ref is null, then this object hasn't been
// marshalled yet.
// (4) if id was created through SetObjectUriForMarshal, it would be
// in the ID table
if ((srvID.ObjURI == null) ||
(srvID.IsInIDTable() == false))
{
// we are marshalling a server object, so there should not be a
// a different identity at this location.
SetIdentity(srvID, objURI, DuplicateIdentityOption.Unique);
}
// If the object is marked as disconnect, mark it as connected
if (srvID.IsDisconnected())
{
srvID.SetFullyConnected();
}
}
}
finally
{
if (bLock)
{
TableLock.ReleaseWriterLock();
}
}
Message.DebugOut("Leaving FindOrCreateServerIdentity \n");
BCLDebug.Assert(null != srvID, "null != srvID");
return(srvID);
}
internal IMessageSink GetServerObjectChain(out MarshalByRefObject obj)
{
obj = null;
// NOTE: Lifetime relies on the Identity flags for
// SingleCall and Singleton being set by the time this getter
// is called.
// get
// {
if (!this.IsSingleCall())
{
// This is the common case
if (_serverObjectChain == null)
{
lock (this)
{
if (_serverObjectChain == null)
{
MarshalByRefObject srvObj =
(MarshalByRefObject)
this.TPOrObject;
_serverObjectChain =
_srvCtx.CreateServerObjectChain(
srvObj);
}
}
}
BCLDebug.Assert(null != _serverObjectChain,
"null != _serverObjectChain");
return(_serverObjectChain);
}
else
{
// ---------- SINGLE CALL WKO --------------
// In this case, we are expected to provide
// a fresh server object for each dispatch.
// Since the server object chain is object
// specific, we must create a fresh chain too.
// We must be in the correct context for this
// to succeed.
BCLDebug.Assert(Thread.CurrentContext == _srvCtx,
"Bad context mismatch");
// For singleCall we create a fresh object & its chain
// on each dispatch!
MarshalByRefObject srvObj = (MarshalByRefObject)
Activator.CreateInstance((Type)_srvType, true);
// make sure that object didn't Marshal itself.
// (well known objects should live up to their promise
// of exporting themselves through exactly one url)
String tempUri = RemotingServices.GetObjectUri(srvObj);
if (tempUri != null)
{
throw new RemotingException(
String.Format(
Environment.GetResourceString(
"Remoting_WellKnown_CtorCantMarshal"),
this.URI));
}
// Set the identity depending on whether we have the server
// or proxy
if (!RemotingServices.IsTransparentProxy(srvObj))
{
#if _DEBUG
Identity idObj = srvObj.__RaceSetServerIdentity(this);
#else
srvObj.__RaceSetServerIdentity(this);
#endif
#if _DEBUG
BCLDebug.Assert(idObj == this, "Bad ID state!");
BCLDebug.Assert(idObj == MarshalByRefObject.GetIdentity(srvObj), "Bad ID state!");
#endif
}
else
{
RealProxy rp = null;
rp = RemotingServices.GetRealProxy(srvObj);
BCLDebug.Assert(null != rp, "null != rp");
// #if _DEBUG
// Identity idObj = (ServerIdentity) rp.SetIdentity(this);
// #else
rp.IdentityObject = this;
// #endif
}
// This is passed out to the caller so that for single-call
// case we can call Dispose when the incoming call is done
obj = srvObj;
// Create the object chain and return it
return(_srvCtx.CreateServerObjectChain(srvObj));
}
// }
}
[System.Security.SecurityCritical] // auto-generated
internal static ServerIdentity FindOrCreateServerIdentity(
MarshalByRefObject obj, String objURI, int flags)
{
Message.DebugOut("Entered FindOrCreateServerIdentity \n");
ServerIdentity srvID = null;
bool fServer;
srvID = (ServerIdentity)MarshalByRefObject.GetIdentity(obj, out fServer);
if (srvID == null)
{
// Create a new server identity and add it to the
// table. IdentityHolder will take care of ----s
Context serverCtx = null;
if (obj is ContextBoundObject)
{
serverCtx = Thread.CurrentContext;
}
else
{
serverCtx = DefaultContext;
}
Contract.Assert(null != serverCtx, "null != serverCtx");
ServerIdentity serverID = new ServerIdentity(obj, serverCtx);
// Set the identity depending on whether we have the server or proxy
if (fServer)
{
srvID = obj.__RaceSetServerIdentity(serverID);
Contract.Assert(srvID == MarshalByRefObject.GetIdentity(obj), "Bad ID state!");
}
else
{
RealProxy rp = null;
rp = RemotingServices.GetRealProxy(obj);
Contract.Assert(null != rp, "null != rp");
rp.IdentityObject = serverID;
srvID = (ServerIdentity)rp.IdentityObject;
}
// DevDiv 720951 and 911924:
// CreateWellKnownObject creates a ServerIdentity and places it in URITable
// before it is fully initialized. This transient flag is set to to prevent
// other concurrent operations from using it. CreateWellKnownObject is the
// only code path that sets this flag, and by default it is false.
if (IdOps.bIsInitializing(flags))
{
srvID.IsInitializing = true;
}
Message.DebugOut("Created ServerIdentity \n");
}
#if false
// Check that we are asked to create the identity for the same
// URI as the one already associated with the server object.
// It is an error to associate two URIs with the same server
// object
// GopalK: Try eliminating the test because it is also done by GetOrCreateIdentity
if ((null != objURI) && (null != srvID.ObjURI))
{
if (string.Compare(objURI, srvID.ObjURI, StringComparison.OrdinalIgnoreCase) == 0) // case-insensitive compare
{
Message.DebugOut("Trying to associate a URI with identity again .. throwing execption \n");
throw new RemotingException(
String.Format(
Environment.GetResourceString(
"Remoting_ResetURI"),
srvID.ObjURI, objURI));
}
}
#endif
// NOTE: for purely x-context cases we never execute this ...
// the server ID is not put in the ID table.
if (IdOps.bStrongIdentity(flags))
{
// We need to guarantee that finally is not interrupted so that the lock is released.
// TableLock has a long path without reliability contract. To avoid adding contract on
// the path, we will use ReaderWriterLock directly.
ReaderWriterLock rwlock = TableLock;
bool takeAndRelease = !rwlock.IsWriterLockHeld;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
if (takeAndRelease)
{
rwlock.AcquireWriterLock(INFINITE);
}
// It is possible that we are marshaling out of this app-domain
// for the first time. We need to do two things
// (1) If there is no URI associated with the identity then go ahead
// and generate one.
// (2) Add the identity to the URI -> Identity map if not already present
// (For purely x-context cases we don't need the URI)
// (3) If the object ref is null, then this object hasn't been
// marshalled yet.
// (4) if id was created through SetObjectUriForMarshal, it would be
// in the ID table
if ((srvID.ObjURI == null) ||
(srvID.IsInIDTable() == false))
{
// we are marshalling a server object, so there should not be a
// a different identity at this location.
SetIdentity(srvID, objURI, DuplicateIdentityOption.Unique);
}
// If the object is marked as disconnect, mark it as connected
if (srvID.IsDisconnected())
{
srvID.SetFullyConnected();
}
}
finally
{
if (takeAndRelease && rwlock.IsWriterLockHeld)
{
rwlock.ReleaseWriterLock();
}
}
}
Message.DebugOut("Leaving FindOrCreateServerIdentity \n");
Contract.Assert(null != srvID, "null != srvID");
return(srvID);
}
internal IMessageSink GetServerObjectChain(out MarshalByRefObject obj)
{
obj = null;
// NOTE: Lifetime relies on the Identity flags for
// SingleCall and Singleton being set by the time this getter
// is called.
if (!this.IsSingleCall())
{
// This is the common case
if (_serverObjectChain == null)
{
lock (this)
{
if (_serverObjectChain == null)
{
MarshalByRefObject srvObj =
(MarshalByRefObject)
this.TPOrObject;
_serverObjectChain =
_srvCtx.CreateServerObjectChain(
srvObj);
}
}
}
BCLDebug.Assert(null != _serverObjectChain,
"null != _serverObjectChain");
return(_serverObjectChain);
}
else
{
// ---------- SINGLE CALL WKO --------------
// In this case, we are expected to provide
// a fresh server object for each dispatch.
// Since the server object chain is object
// specific, we must create a fresh chain too.
// We must be in the correct context for this
// to succeed.
// NOTE: It may be useful to recycle the context too
// but for V1 we will keep the context we setup for
// the first object around and always dispatch the call
// through that context ... when we are here we have
// already been through the server sink chain. We will
// only dispatch through the object sink chain of the
// object we will create below ... if for some reason
// the object creates its own context we will not go
// through the server sink chain for that context again.
// We should fix this in V-next and always create everything
// from scratch for single-call wellKnown objects
BCLDebug.Assert(Thread.CurrentContext == _srvCtx,
"Bad context mismatch");
MarshalByRefObject srvObj = null;
IMessageSink objChain = null;
if (_tpOrObject != null && _firstCallDispatched == 0 && Interlocked.CompareExchange(ref _firstCallDispatched, 1, 0) == 0)
{
// use the instance of server object created to
// set up the pipeline.
srvObj = (MarshalByRefObject)_tpOrObject;
objChain = _serverObjectChain;
if (objChain == null)
{
objChain = _srvCtx.CreateServerObjectChain(srvObj);
}
}
else
{
// For singleCall we create a fresh object & its chain
// on each dispatch!
srvObj = (MarshalByRefObject)
Activator.CreateInstance((Type)_srvType, true);
// make sure that object didn't Marshal itself.
// (well known objects should live up to their promise
// of exporting themselves through exactly one url)
String tempUri = RemotingServices.GetObjectUri(srvObj);
if (tempUri != null)
{
throw new RemotingException(
String.Format(
Environment.GetResourceString(
"Remoting_WellKnown_CtorCantMarshal"),
this.URI));
}
// Set the identity depending on whether we have the server
// or proxy
if (!RemotingServices.IsTransparentProxy(srvObj))
{
#if _DEBUG
Identity idObj = srvObj.__RaceSetServerIdentity(this);
#else
srvObj.__RaceSetServerIdentity(this);
#endif
#if _DEBUG
BCLDebug.Assert(idObj == this, "Bad ID state!");
BCLDebug.Assert(idObj == MarshalByRefObject.GetIdentity(srvObj), "Bad ID state!");
#endif
}
else
{
RealProxy rp = null;
rp = RemotingServices.GetRealProxy(srvObj);
BCLDebug.Assert(null != rp, "null != rp");
// #if _DEBUG
// Identity idObj = (ServerIdentity) rp.SetIdentity(this);
// #else
rp.IdentityObject = this;
// #endif
#if _DEBUG
// REVIEW: turn these on after adding a clean way to
// reset identity-s on x-context proxies ... (id needs
// to be set in the proxy && on the _serverObject in
// the proxy)
// BCLDebug.Assert(idObj == this, "Bad ID state!" );
// BCLDebug.Assert(idObj == rp.IdentityObject, "Bad ID state!" );
#endif
}
// Create the object chain and return it
objChain = _srvCtx.CreateServerObjectChain(srvObj);
}
// This is passed out to the caller so that for single-call
// case we can call Dispose when the incoming call is done
obj = srvObj;
return(objChain);
}
}