folly::symbolizer::SignalCallback

Add a callback to be run when receiving a fatal signal. They will also be called by LOG(FATAL) and abort() (as those raise SIGABRT internally).

Synopsis

Declared in <folly/debugging/symbolizer/SignalHandler.h>

using SignalCallback = void(*)();

These callbacks must be async‐signal‐safe, so don't even think of using LOG(...) or printf or malloc / new or doing anything even remotely fun.

All these fatal callback must be added before calling installFatalSignalCallbacks(), below.

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