Function sigKillChildHandler

app/redis-6.2.6/src/server.c:5824–5829

This is the signal handler for children process. It is currently useful * in order to track the SIGUSR1, that we send to a child in order to terminate * it in a clean way, without the parent detecting an error and stop * accepting writes because of a write error condition. */

 * it in a clean way, without the parent detecting an error and stop
 * accepting writes because of a write error condition. */
static void sigKillChildHandler(int sig) {
    UNUSED(sig);
    int level = server.in_fork_child == CHILD_TYPE_MODULE? LL_VERBOSE: LL_WARNING;
    serverLogFromHandler(level, "Received SIGUSR1 in child, exiting now.");
    exitFromChild(SERVER_CHILD_NOERROR_RETVAL);
}

void setupChildSignalHandlers(void) {
    struct sigaction act;