If you require more control over the ImageJ side - such as picking a semi-random port if port 8000 is already in use - you can also use the -agentlib:jdwp=. Now you only need to make sure that the port matches the value that you specified (in the example above, 8000, Eclipse's default port number). right-click on the Remote Java Application item in the left-hand side list and select New. to inspect variables' values), and after clicking on Run>Debug Configurations. In Eclipse (or whatever JDWP-enabled debugger) select the correct project so that the source code can be found, mark the break-points where you want execution to halt (e.g. To start ImageJ in said mode, you need to pass the -debugger= option: JDWP ( Java Debug Wire Protocol) to the rescue!Īfter starting the Java Virtual Machine in a special mode, debuggers (such as Eclipse's built-in one) can attach to it. jar files, both of which are incompatible with Eclipse debugging). Sometimes, we need to debug things directly in ImageJ, for example because there might be issues with the plugin discovery (ImageJ wants to find the plugins in /plugins/, and often we want to bundle them as. if it does not require an image to run, simply use the n(plugin, parameters) method. If your plugin is not a filter plugin, i.e. You need to replace the first argument by a valid path to a sample image and the second argument by the name of your plugin (typically the class name with underscores replaced by spaces). To make things easier, we provide helper methods in fiji-lib in the class fiji.Debug to run plugins, and to load images and run filter plugins:ĭnFilter("/home/clown/my-profile.jpg", "Gaussian Blur", "radius=2") To debug a plugin in an IDE, you most likely need to provide a main() method. See the Troubleshooting page for instructions.ĭebugging plugins in an IDE (Netbeans, IntelliJ, Eclipse, etc) To debug problems with ImageJ, it is often helpful to launch it in debug mode. 12 Interactive debugging using a shared Terminal session.10 Debugging Swing (Event Dispatch Thread) issues.8.2 This is an ultra quick start to jdb, the default Java debugger.8.1 How to attach the Java debugger jdb to a running ImageJ process.4 Debugging shared (dynamic) library issues. 2 Debugging plugins in an IDE (Netbeans, IntelliJ, Eclipse, etc).I don't have permission to Atjaden's ticket. Service#getPort()įor example 10 times in works, but on 11 it hangs. It seems like it depends on count call of the method: Idea 2017.3.2(Ultimate edition) under Linux.Īpplication is hanging on ( according to jstack): Our application works in Run mode and hangs in Debug mode. We have the same s i t u ation as Atjaden has. Enable Mute Renderers option in the Debug tool window Variables view context menu.Settings (Preferences on macOS) | Build, Execution, Deployment | Debugger | Data Views | Java | Predict condition values and exceptions based on data flow analysis.Settings (Preferences on macOS) | Build, Execution, Deployment | Debugger | Data Views | Editor | Show values inline.It is updated on every debugger stop, try to minimize it to improve stepping performance. Memory tab in the debugger toolwindow.Note that custom toString() methods can also change the semantics of the application when running under debugger in case the code inside these methods changes the state of your application. If toString() methods take a long time to complete, disable this option. Enable alternative views for Collections classes and Enable toString()’ object view options enabled in Settings (Preferences on macOS) | Build, Execution, Deployment | Debugger | Data Views.Try disabling this option to improve the performance. Show method return values option is enabled in the Debugger tool window.iws file if you are using the old project format) and look for any breakpoints inside the method_breakpoints node. idea/workspace.xml file in the project root directory (or. To verify that you don't have any method breakpoints open. Remove method breakpoints and consider using the regular line breakpoints. Method breakpoints will slow down debugger a lot because of the JVM design, they are expensive to evaluate.Debugger performance can be affected by the following:
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