Design Mode-proxy Model)

Basic proxy mode Execution Process

1. initialize proxy)

1.1 initialize the real class)

1.1.1 set whether the flag is complete

1.2 construct the execution proxy class

1.2.1 register the "Create method" Event

1.2.2 load the "creation method of real classes" into the thread (generally, the demo is not used primarily)

1.2.3 start thread (generally not used. Demo-based)

2. Proxy registration events

3. proxy class Creation Method

3.1 determine whether the real class is loaded (it is impossible for the first time)

3.1 create a base class

4. Execute the creation method of the real class

4.1 set the completion mark

4.2 check whether the creation method is complete

5. Wait until the real class is created

6. Once completed, the real-class notification observer

7. Finally, the proxy class returns the result of the real class to the interface.