Attach to Process
The Attach to process feature allows you to debug a project which you are developing in IntelliJ IDEA, but that you are unable to launch directly from your IDE for some reason.
The process intended for debugging can be launched from your operating system, or using the IntelliJ IDEA terminal. In either way, it should be launched in the debug mode using the following startup parameters:
Attach to a process
From the main menu, chooseor press Ctrl+Alt+F5.
From the list of available processes, select the desired process.
Simplify your search by typing the first letters of its name or PID. If there are several debuggers that can be used for the selected process, you can choose among them in the popup menu.
Note that in case the process you have attached to does not provide debug information, breakpoints will be unavailable and stepping will be performed in the disassembly view.
When finished, detach the process: select the Stop the process button of the Debug Tool Window.or click the