Function killAppendOnlyChild

app/redis-6.2.6/src/aof.c:215–232

Kills an AOFRW child process if exists */

/* Kills an AOFRW child process if exists */
void killAppendOnlyChild(void) {
    int statloc;
    /* No AOFRW child? return. */
    if (server.child_type != CHILD_TYPE_AOF) return;
    /* Kill AOFRW child, wait for child exit. */
    serverLog(LL_NOTICE,"Killing running AOF rewrite child: %ld",
        (long) server.child_pid);
    if (kill(server.child_pid,SIGUSR1) != -1) {
        while(waitpid(-1, &statloc, 0) != server.child_pid);
    }
    /* Reset the buffer accumulating changes while the child saves. */
    aofRewriteBufferReset();
    aofRemoveTempFile(server.child_pid);
    resetChildState();
    server.aof_rewrite_time_start = -1;
    /* Close pipes used for IPC between the two processes. */
    aofClosePipes();
}

/* Called when the user switches from "appendonly yes" to "appendonly no"
 * at runtime using the CONFIG command. */