Home / cs-notes / Language / Java / Concurrent / Code / Future / CompletableFuture / fire

    /**
     * Post-processing by dependent after successful UniCompletion
     * tryFire.  Tries to clean stack of source a, and then either runs
     * postComplete or returns this to caller, depending on mode.
     */
    final CompletableFuture<T> postFire(CompletableFuture<?> a, int mode) {
        if (a != null && a.stack != null) {
            if (mode < 0 || a.result == null)
                a.cleanStack();
            else
                a.postComplete();
        }
        if (result != null && stack != null) {
            if (mode < 0)
                return this;
            else
                postComplete();
        }
        return null;
    }