static void Marshalling()
{
//the AppDomain of current executing thread
AppDomain currentThreadDomain = System.Threading.Thread.GetDomain();
//currentThreadDomain = System.AppDomain.CurrentDomain; //same as above
Console.WriteLine("Current AppDomain friendly name: " + currentThreadDomain.FriendlyName); //CLRviaCsharp.exe
Console.WriteLine(Environment.NewLine);
//Assembly.GetEntryAssembly而不是AppDomain.xxx
string exeAssemblyName = System.Reflection.Assembly.GetEntryAssembly().FullName;
Console.WriteLine("Assembly that has Main method in current AppDomain：" + exeAssemblyName);
Console.WriteLine(Environment.NewLine);
//the log from other assembly in this appdomain
MyTestLibrary.DllMethod();
Console.WriteLine(Environment.NewLine);
//Marshal by ref
Console.WriteLine("#1 : Cross AppDomain boundary by proxy ref");
AppDomain ad2 = null;
ad2 = AppDomain.CreateDomain("AppDomain #2", null, null); //null -> 继承当前domain的安全性和配置设定
//通过string参数指定assembly和类型名
//线程跳转到AppDomain 2, 加载assembly, 创建对象
//回到AppDomain 1, 根据指定创建代理类型, 创建代理对象, 返回代理对象引用至ors
ObjRefSend ors = null;
//ors = new ObjRefSend();
//ors.Method_Void_NoParams();
ors = (ObjRefSend)ad2.CreateInstanceAndUnwrap(exeAssemblyName, "ObjRefSend"); //TODO ?
Console.WriteLine("CLR says ors type is " + ors.GetType());
Console.WriteLine("Actually is it a Proxy instance? " + System.Runtime.Remoting.RemotingServices.IsTransparentProxy(ors)); //RemoteingService is not in Intellisense
Console.WriteLine("proxy obj 'release manager' life time: " + ors.GetLifetimeService());
ors.Method_Void_NoParams(); //call method on proxy instance, execute back in AD2
AppDomain.Unload(ad2);
try
{
ors.Method_Void_NoParams();
}
catch (AppDomainUnloadedException e)
{
Console.WriteLine("Call Fails because " + e.Message);
}
Console.WriteLine(Environment.NewLine);
Console.WriteLine("#2 : Cross AppDomain boundary by value");
ad2 = AppDomain.CreateDomain("AppDomain #2", null, null);
ors = (ObjRefSend)ad2.CreateInstanceAndUnwrap(exeAssemblyName, "ObjRefSend");
ObjValueSend ovs = ors.Method_Return_NoParams(); //返回类型是可序列化类型, Ad2中创建一个对象, 其序列化后的bytes回到Ad1, 反序列化得到完全复制的另一个对象
ovs.MemberMethod();
AppDomain.Unload(ad2);
try
{
ovs.MemberMethod();
} catch (AppDomainUnloadedException e)
{
Console.WriteLine("Call Fails because " + e.Message);
} finally
{
Console.WriteLine("Call Succeeds");
}
Console.WriteLine(Environment.NewLine);
Console.WriteLine("#3 : Object Cannot cross AppDomain boundary");
ad2 = AppDomain.CreateDomain("AppDomain #2", null, null);
ors = (ObjRefSend)ad2.CreateInstanceAndUnwrap(exeAssemblyName, "ObjRefSend");
try
{
ObjCannotSend ocs = ors.Method_Return_Params("pass in string");
} catch (System.Runtime.Serialization.SerializationException e)
{
Console.WriteLine("Call Fails because " + e.Message);
}
}
public ObjCannotSend Method_Return_Params(string s) //参数也必须符合隔离, string是值封送而且有特殊处理
{
ObjCannotSend ocs = new ObjCannotSend();
return(ocs);
}