code: /*
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.rxjava3.internal.operators.flowable;
  
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.reactivestreams.*;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.exceptions.*;
  import io.reactivex.rxjava3.functions.BiPredicate;
  import io.reactivex.rxjava3.internal.subscriptions.SubscriptionArbiter;
  
  public final class FlowableRetryBiPredicate<T> extends AbstractFlowableWithUpstream<T, T> {
      final BiPredicate<? super Integer, ? super Throwable> predicate;
      public FlowableRetryBiPredicate(
              Flowable<T> source,
              BiPredicate<? super Integer, ? super Throwable> predicate) {
          super(source);
          this.predicate = predicate;
      }
  
      @Override
      public void subscribeActual(Subscriber<? super T> s) {
          SubscriptionArbiter sa = new SubscriptionArbiter(false);
          s.onSubscribe(sa);
  
          RetryBiSubscriber<T> rs = new RetryBiSubscriber<>(s, predicate, sa, source);
          rs.subscribeNext();
      }
  
      static final class RetryBiSubscriber<T> extends AtomicInteger implements FlowableSubscriber<T> {
  
          private static final long serialVersionUID = -7098360935104053232L;
  
          final Subscriber<? super T> downstream;
          final SubscriptionArbiter sa;
          final Publisher<? extends T> source;
          final BiPredicate<? super Integer, ? super Throwable> predicate;
          int retries;
  
          long produced;
  
          RetryBiSubscriber(Subscriber<? super T> actual,
                  BiPredicate<? super Integer, ? super Throwable> predicate, SubscriptionArbiter sa, Publisher<? extends T> source) {
              this.downstream = actual;
              this.sa = sa;
              this.source = source;
              this.predicate = predicate;
          }
  
          @Override
          public void onSubscribe(Subscription s) {
              sa.setSubscription(s);
          }
  
          @Override
          public void onNext(T t) {
              produced++;
              downstream.onNext(t);
          }
  
          @Override
          public void onError(Throwable t) {
              boolean b;
              try {
                  b = predicate.test(++retries, t);
              } catch (Throwable e) {
                  Exceptions.throwIfFatal(e);
                  downstream.onError(new CompositeException(t, e));
                  return;
              }
              if (!b) {
                  downstream.onError(t);
                  return;
              }
              subscribeNext();
          }
  
          @Override
          public void onComplete() {
              downstream.onComplete();
          }
  
          /**
           * Subscribes to the source again via trampolining.
           */
          void subscribeNext() {
              if (getAndIncrement() == 0) {
                  int missed = 1;
                  for (;;) {
                      if (sa.isCancelled()) {
                          return;
                      }
  
                      long p = produced;
                      if (p != 0L) {
                          produced = 0L;
                          sa.produced(p);
                      }
  
                      source.subscribe(this);
  
                      missed = addAndGet(-missed);
                      if (missed == 0) {
                          break;
                      }
                  }
              }
          }
      }
  }
  