Function backgroundSaveDoneHandlerSocket

app/redis-6.2.6/src/rdb.c:2799–2822

A background saving child (BGSAVE) terminated its work. Handle this. * This function covers the case of RDB -> Slaves socket transfers for * diskless replication. */

 * This function covers the case of RDB -> Slaves socket transfers for
 * diskless replication. */
static void backgroundSaveDoneHandlerSocket(int exitcode, int bysignal) {
    if (!bysignal && exitcode == 0) {
        serverLog(LL_NOTICE,
            "Background RDB transfer terminated with success");
    } else if (!bysignal && exitcode != 0) {
        serverLog(LL_WARNING, "Background transfer error");
    } else {
        serverLog(LL_WARNING,
            "Background transfer terminated by signal %d", bysignal);
    }
    if (server.rdb_child_exit_pipe!=-1)
        close(server.rdb_child_exit_pipe);
    aeDeleteFileEvent(server.el, server.rdb_pipe_read, AE_READABLE);
    close(server.rdb_pipe_read);
    server.rdb_child_exit_pipe = -1;
    server.rdb_pipe_read = -1;
    zfree(server.rdb_pipe_conns);
    server.rdb_pipe_conns = NULL;
    server.rdb_pipe_numconns = 0;
    server.rdb_pipe_numconns_writing = 0;
    zfree(server.rdb_pipe_buff);
    server.rdb_pipe_buff = NULL;
    server.rdb_pipe_bufflen = 0;
}

/* When a background RDB saving/transfer terminates, call the right handler. */
void backgroundSaveDoneHandler(int exitcode, int bysignal) {