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typedef void (*SighandlerTypesighandler_t)(int signum); extern SighandlerTypesighandler_t signal( int signum, SighandlerTypesighandler_t handler ); |
Signal handlers can be interrupted by signals, including their own. If a signal is not reset before its handler is called, the handler can interrupt its own execution. A handler that always successfully executes its code despite interrupting itself or being interrupted is asynchronous-safe.
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