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Allow customization of signal handler in registration, add flushing #259

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nextsilicon-itay-bookstein

Thank you for making this library, it's very useful to us!

This PR tries to address a couple of minor pain points we encountered when using the library:

  • Makes signal handler installation logic reusable and allows for caller to specify an alternative handler (Linux/Darwin)
  • Adds flushing of the output streams from crash handlers

馃槃

This allows for easier wrapping of the already-publicly-exposed
handler logic without duplicating the registration logic in the
client.
@bombela
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bombela commented Oct 3, 2022

Thank you for offering your work.

The signal handler that comes with backward-cpp is an example more than something ready for all use-cases. Consider it as a basic example ready for copy paste to make your own.

With my experience maintaining this library over the year, I have observed that implementation of signal handlers can change widely depending of the application (sync, async, threading etc). Therefore I think it is better to keep this outside of backward-cpp.

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