69 lines
No EOL
2.7 KiB
Markdown
69 lines
No EOL
2.7 KiB
Markdown
# Debug
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Native VSCode debugger. Currently only using GDB.
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## Usage
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Open your project and click the debug button in your sidebar. At the top right press
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the little gear icon and select GDB. It will automatically generate the configuration
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you need.
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Now you need to change `target` to the application you want to debug relative
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to the cwd. (Which is the workspace root by default)
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Before debugging you need to compile your application first, then you can run it using
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the green start button in the debug sidebar. For this you could use the `preLaunchTask`
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argument vscode allows you to do. Debugging multithreaded applications is currently not
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implemented. Adding breakpoints while the program runs will not interrupt it immediately.
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For that you need to pause & resume the program once first. However adding breakpoints
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while its paused works as expected.
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Extending variables is very limited as it does not support child values of variables.
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Watching expressions works partially but the result does not get properly parsed and
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it shows the raw GDB output of the command. It will run `data-evaluate-expression`
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to check for variables.
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While running you will get a console where you can manually type GDB commands or GDB/MI
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commands prepended with a hyphen `-`. The console shows all output GDB gives separated
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in `stdout` for the application, `stderr` for errors and `log` for GDB log messages.
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Some exceptions/signals like segmentation faults will be catched and displayed but
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it does not support for example most D exceptions.
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### Attaching to existing processes
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Attaching to existing processes currently only works by specifying the PID in the
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`launch.json` and setting `request` to `"attach"`. You also need to specify the executable
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path for GDB to find the debug symbols.
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```
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"request": "attach",
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"executable": "./bin/executable",
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"target": "4285"
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```
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This will attach to PID 4285 which should already run. GDB will pause the program on entering.
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### Using `gdbserver` for remote debugging
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You can also connect to a gdbserver instance and debug using that. For that modify the
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`launch.json` by setting `request` to `"attach"` and `remote` to `true` and specifing the
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port and optionally hostname in `target`.
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```
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"request": "attach",
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"executable": "./bin/executable",
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"target": ":2345",
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"remote": true
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```
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This will attach to the running process managed by gdbserver on localhost:2345. You might
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need to hit the start button in the debug bar at the top first to start the program.
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## [Issues](https://github.com/WebFreak001/code-debug) |