std::raise

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 handler
    std::signal(SIGTERM, signal_handler);

    std::cout << "Sending signal " << SIGTERM << '\n';
    std::raise(SIGTERM);
}

Possible output:

Sending signal 15
Received signal 15

Language
Headers
Freestanding and hosted implementations
Named requirements
Language support library
Concepts library (C++20)
Diagnostics library
Utilities library
Strings library
Containers library
Algorithms library
Iterators library
Numerics library
Input/output library
Localizations library
Regular expressions library (C++11)
Atomic operations library (C++11)
Thread support library (C++11)
Filesystem library (C++17)
Technical Specifications

std::raise

Parameters

Return value

Example

See also