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authorJiyoung Yun <jy910.yun@samsung.com>2016-11-23 19:09:09 +0900
committerJiyoung Yun <jy910.yun@samsung.com>2016-11-23 19:09:09 +0900
commit4b4aad7217d3292650e77eec2cf4c198ea9c3b4b (patch)
tree98110734c91668dfdbb126fcc0e15ddbd93738ca /src/mscorlib/src/System/Runtime/Remoting
parentfa45f57ed55137c75ac870356a1b8f76c84b229c (diff)
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Imported Upstream version 1.1.0upstream/1.1.0
Diffstat (limited to 'src/mscorlib/src/System/Runtime/Remoting')
-rw-r--r--src/mscorlib/src/System/Runtime/Remoting/ObjectHandle.cs81
1 files changed, 81 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/Runtime/Remoting/ObjectHandle.cs b/src/mscorlib/src/System/Runtime/Remoting/ObjectHandle.cs
new file mode 100644
index 0000000000..d10df9d57b
--- /dev/null
+++ b/src/mscorlib/src/System/Runtime/Remoting/ObjectHandle.cs
@@ -0,0 +1,81 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*============================================================
+**
+**
+**
+** ObjectHandle wraps object references. A Handle allows a
+** marshal by value object to be returned through an
+** indirection allowing the caller to control when the
+** object is loaded into their domain.
+**
+**
+===========================================================*/
+
+namespace System.Runtime.Remoting{
+
+ using System;
+ using System.Security.Permissions;
+ using System.Runtime.InteropServices;
+ using System.Runtime.Remoting;
+#if FEATURE_REMOTING
+ using System.Runtime.Remoting.Activation;
+ using System.Runtime.Remoting.Lifetime;
+#endif
+
+ [ClassInterface(ClassInterfaceType.AutoDual)]
+ [System.Runtime.InteropServices.ComVisible(true)]
+ public class ObjectHandle:
+#if FEATURE_REMOTING
+ MarshalByRefObject,
+#endif
+ IObjectHandle
+ {
+ private Object WrappedObject;
+
+ private ObjectHandle()
+ {
+ }
+
+ public ObjectHandle(Object o)
+ {
+ WrappedObject = o;
+ }
+
+ public Object Unwrap()
+ {
+ return WrappedObject;
+ }
+
+ // ObjectHandle has a finite lifetime. For now the default
+ // lifetime is being used, this can be changed in this method to
+ // specify a custom lifetime.
+#if FEATURE_REMOTING
+ [System.Security.SecurityCritical] // auto-generated_required
+ public override Object InitializeLifetimeService()
+ {
+ BCLDebug.Trace("REMOTE", "ObjectHandle.InitializeLifetimeService");
+
+ //
+ // If the wrapped object has implemented InitializeLifetimeService to return null,
+ // we don't want to go to the base class (which will result in a lease being
+ // requested from the MarshalByRefObject, which starts up the LeaseManager,
+ // which starts up the ThreadPool, adding three threads to the process.
+ // We check if the wrapped object is a MarshalByRef object, and call InitializeLifetimeServices on it
+ // and if it returns null, we return null. Otherwise we fall back to the old behavior.
+ //
+
+ MarshalByRefObject mbr = WrappedObject as MarshalByRefObject;
+ if (mbr != null) {
+ Object o = mbr.InitializeLifetimeService();
+ if (o == null)
+ return null;
+ }
+ ILease lease = (ILease)base.InitializeLifetimeService();
+ return lease;
+ }
+#endif // FEATURE_REMOTING
+ }
+}