} catch (Exception e) {
                    fail("Concurrent session handling failed: " + e.getMessage());
                } finally {
                    latch.countDown();
                }
            });
        }

        assertTrue(latch.await(10, TimeUnit.SECONDS));
        executor.shutdown();
    }

    @Test

                    executor.execute(new ResolveTask(
                            classLoader, latch, artifact, session, node.getRemoteRepositories(), result));
                } else {
                    latch.countDown();
                }
            }
            try {
                latch.await();
            } catch (InterruptedException e) {
                result.addErrorArtifactException(

                  started.countDown();
                  try {
                    return method.invoke(delegate, args);
                  } catch (InvocationTargetException e) {
                    throw e.getCause();
                  } finally {
                    awaitUninterruptibly(canReturn);
                    returned.countDown();
                  }
                }

            exc -> {}
        );
        CountDownLatch latch = new CountDownLatch(shards.size());
        for (int i = 0; i < shards.size(); i++) {
            consumer.consumeResult(shards.get(i), () -> latch.countDown());
        }
        latch.await();
        SearchPhaseController.ReducedQueryPhase phase = consumer.reduce();
        executor.shutdownNow();
        return phase;
    }

    Future<?> first = blocked.submit(() -> executor.execute(Runnables.doNothing()));
    future.get(10, SECONDS);
    assertThrows(RejectedExecutionException.class, () -> executor.execute(Runnables.doNothing()));
    latch.countDown();
    ExecutionException expected =
        assertThrows(ExecutionException.class, () -> first.get(10, SECONDS));
    assertThat(expected).hasCauseThat().isInstanceOf(RejectedExecutionException.class);
  }

    val latch = CountDownLatch(1)
    Thread {
      sleep(delayMillis)
      if (cancelMode == CANCEL) {
        call.cancel()
      } else {
        threadToCancel!!.interrupt()
      }
      latch.countDown()
    }.apply { start() }
    return latch
  }

  companion object {
    // The size of the socket buffers in bytes.
    private const val SOCKET_BUFFER_SIZE = 256 * 1024
  }
}

                execJob.jvmOptions("-Xmx" + i + "m");
            }
            latch.countDown();
        });

        Thread t2 = new Thread(() -> {
            for (int i = 0; i < 100; i++) {
                execJob.jvmOptions("-Xms" + i + "m");
            }
            latch.countDown();
        });

        t1.start();
        t2.start();

                        if (result == mockConfig) {
                            successCount.incrementAndGet();
                        }
                    } finally {
                        latch.countDown();
                    }
                }).start();
            }

            latch.await(5, java.util.concurrent.TimeUnit.SECONDS);

        .addNetworkInterceptor(
          Interceptor { chain ->
            try {
              chain.proceed(chain.request())
            } finally {
              firstConnectLatch.countDown()
            }
          },
        ).build()

    // Set up a same-connection retry.
    serverIpv4.enqueue(
      MockResponse
        .Builder()

    Future<?> first = blocked.submit(() -> executor.execute(Runnables.doNothing()));
    future.get(10, SECONDS);
    assertThrows(RejectedExecutionException.class, () -> executor.execute(Runnables.doNothing()));
    latch.countDown();
    ExecutionException expected =
        assertThrows(ExecutionException.class, () -> first.get(10, SECONDS));
    assertThat(expected).hasCauseThat().isInstanceOf(RejectedExecutionException.class);
  }