Capture native stack in Pf2c #47
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Capture native stack frames (the current PC to be more specific) when the sample capture process runs. This implementation uses libbacktrace as its backend, which is the same as the Rust implementation. There should be no problems calling backtrace_simple() in the signal handler as it is marked as async-signal-safe. The first 2 frames will be skipped (not included in the capture) since they will always be capture_native_backtrace() and sigprof_handler().
Main functionaility ported from Ser2 in the Rust implementation.
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Capture native stack frames (the current PC to be more specific) when the sample capture process runs.
This implementation uses libbacktrace as its backend, which is the same as the Rust implementation.
There should be no problems calling backtrace_simple() in the signal handler as it is marked as async-signal-safe. The first 2 frames will be skipped (not included in the capture) since they will always be capture_native_backtrace() and sigprof_handler().