从初始化程序中止共享库的加载

Question

I have a shared library that sets up shared memory in its initializer. When I can't allocate the shared memory, I would like to abort the loading of this library by the calling program, so that this program's load will fail and can act accordingly.

I am using QLibrary.isloaded() to check if the library is loaded in the calling program.

How can I prevent the library from being loaded when an error in the initializer occurs?

Answer 1

Since you mention Qt, perhaps using QPluginLoader is better. Read more about Qt Plugins and make your plugin return a pointer to a QObject, which would be NULL to indicate failure.