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.
[edit] Parameters sig - the signal to be sent. It can be an implementation-defined value or one of the following values: [edit] Return valueâ0â upon success, non-zero value on failure.
[edit] Example#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[edit] See also
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