ABAP function group 和 Tomcat library 重复加载问题

ABAP

ABAP help文档里对**LOAD-OF-PROGRAM"的关键字是这样描述的：

This event keyword defines the program constructor of an executable program, a module pool, a function group, or a subroutine pool. The program constructor is an event block whose event is raised by the ABAP-runtime environment when one of the executable programs mentioned above is loaded into the internal session.

以Function group为例，每当一个function group里的任意一个function module第一次被调用时，对应的ABAP program被加载到internal session里，同时ABAP运行时抛出LOAD-OF-PROGRAM, 执行应用程序员编写的事件处理逻辑。

现在我有一个名为ZTOMCAT的function group。其LOAD-OF-PROGRAM就负责弹出调试器。

我有两个report。Report 2的源代码：