gistfile1.txt

#include <iostream>
#include <csignal>
#include <stdexcept>

// Global variable to track whether an exception was thrown
bool exceptionThrown = false;

// Signal handler function
void signalHandler(int signum) {
    if (exceptionThrown) {
        // Handle the exception here, or perform any necessary cleanup
        std::cerr << "Caught an exception during signal handling." << std::endl;
    }

    // Optionally, re-raise the signal to terminate the program
    signal(signum, SIG_DFL);
    raise(signum);
}

int main() {
    // Register the signal handler
    signal(SIGUSR1, signalHandler);

    try {
        // Your code that uses the library here
        // If an exception is thrown, set the global flag
    } catch (const std::exception& e) {
        std::cerr << "Caught an exception: " << e.what() << std::endl;
        exceptionThrown = true;
    }

    // Continue with normal program execution

    // If you want to trigger the signal handler to catch an exception on exit
    if (exceptionThrown) {
        kill(getpid(), SIGUSR1);
    }

    return 0;
}