std::raise

 

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unreachable (C++23)
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system	getenv
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signal raise sig_atomic_t	SIG_DFLSIG_IGN SIG_ERR
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SIGABRTSIGFPESIGILL	SIGINTSIGSEGVSIGTERM
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Defined in header <csignal>
int raise(int sig );

Sends signal sig to the program. The signal handler (specified using the std::signal() function) is invoked.

If the user-defined signal handling strategy is not set using std::signal() yet, it is implementation-defined whether the signal will be ignored or default handler will be invoked.

Parameters

sig

-

the signal to be sent. It can be an implementation-defined value or one of the following values: SIGABRTSIGFPESIGILLSIGINTSIGSEGVSIGTERM defines signal types (macro constant)

Return value

​0​ upon success, non-zero value on failure.

Example

Run this code

#include <csignal>#include <iostream>   void signal_handler(int signal){std::cout<<"Received signal "<< signal <<'\n';}   int main(){// Install a signal handlerstd::signal(SIGTERM, signal_handler);   std::cout<<"Sending signal "<<SIGTERM<<'\n'; std::raise(SIGTERM);}

Possible output:

Sending signal 15 Received signal 15

See also

signal	sets a signal handler for particular signal (function)
C documentation for raise