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;doc: DEVFAQ: updates

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Simon Michael 2024-05-01 17:16:08 -10:00
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@ -79,9 +79,11 @@ Starting ghc-debug on socket: ...
Now in another window, you can run [ghc-debug-brick](https://hackage.haskell.org/package/ghc-debug-brick) and it will show the hledger process (until it ends). Press enter to connect. This is not robust. Tips:
- you might need to clear out stale sockets: `rm -f ~/.local/share/ghc-debug/debuggee/sockets/*`
- you might need to kill stale hledger processes: `pkill -fl hledger`
- it might still fail with this error, reasons unclear:\
`rts_resume: called from a different OS thread than rts_pause`
- if it connects and the program is running, press `p` to pause it
- with --debug=-2 or -3 it might fail with this error, reasons unclear:\
`rts_resume: called from a different OS thread than rts_pause`.\
To work around, use --debug=-1.
(This works best with hledger-ui or hledger-web; with hledger, you'll need to give it a big enough data file so that you can connect and pause it before it finishes.)
- once connected, if the program is running, press `p` to pause it
At this point, you can explore memory/profile information, save snapshots, resume execution, etc.