@asynccontextmanager
async def contextmanager_in_threadpool(
    cm: ContextManager[_T],
) -> AsyncGenerator[_T, None]:
    # blocking __exit__ from running waiting on a free thread
    # can create race conditions/deadlocks if the context manager itself
    # has its own internal pool (e.g. a database connection pool)
    # to avoid this we let __exit__ run without a capacity limit

 * Don't start a new attempt until 250 ms after the most recent attempt was started.
 * Keep whichever TCP connection succeeds first and cancel all the others.
 * Race TCP only. Only attempt a TLS handshake on the winning TCP connection.

    printEvent("callStart");
  }

  @Override public void callEnd(Call call) {
    printEvent("callEnd");
  }

  ...
}
```

We can use this listener to race a pair of concurrent HTTP requests:

```java
Request washingtonPostRequest = new Request.Builder()
    .url("https://www.washingtonpost.com/")
    .build();

	// Close the underlying writer.
	// This will also flush the ring buffer if used.
	err := b.iow.Close()

	// Wait for all data to be written before returning else it causes race conditions.
	// Race condition is because of io.PipeWriter implementation. i.e consider the following
	// sequent of operations:
	// 1) pipe.Write()
	// 2) pipe.Close()

        run: |
          sudo apt install jq -y
          sudo sysctl net.ipv6.conf.all.disable_ipv6=0
          sudo sysctl net.ipv6.conf.default.disable_ipv6=0
          make
          make test

      "plan 1 TLS connected",
    )

    taskFaker.assertNoMoreTasks()
  }

  /**
   * This test performs two races:
   *
   *  * The first race is between plan0 and plan1, with a 250 ms head start for plan0.
   *  * The second race is between plan2 and plan3, with a 250 ms head start for plan2.
   *
   * We get plan0 and plan1 from the route planner.

import javax.annotation.CheckForNull;

/**
 * Exception indicating that a recursive delete can't be performed because the file system does not
 * have the support necessary to guarantee that it is not vulnerable to race conditions that would
 * allow it to delete files and directories outside of the directory being deleted (i.e., {@link
 * SecureDirectoryStream} is not supported).
 *

    assertThrows(IllegalArgumentException.class, () -> multiset.add(KEY, COUNT_TO_ADD));
  }

  /**
   * Simulate some of the races that can happen on add. We can't easily simulate the race that
   * happens when an {@link AtomicInteger#compareAndSet} fails, but we can simulate the case where
   * the putIfAbsent returns a non-null value, and the case where the replace() of an observed zero

	pkill -9 minio || sudo pkill -9 minio
	rm -rf /tmp/sitea
	rm -rf /tmp/siteb
	echo "done"
}

cleanup

export MINIO_CI_CD=1
export MINIO_BROWSER=off

make install-race

# Start MinIO instances
echo -n "Starting MinIO instances ..."
minio server --address 127.0.0.1:9001 --console-address ":10000" "http://127.0.0.1:9001/tmp/sitea/data/disterasure/xl{1...4}" \

@ElementTypesAreNonnullByDefault
public enum RecursiveDeleteOption {
  /**
   * Specifies that the recursive delete should not throw an exception when it can't be guaranteed
   * that it can be done securely, without vulnerability to race conditions (i.e. when the file
   * system does not support {@link SecureDirectoryStream}).
   *
   * <p><b>Warning:</b> On a file system that supports symbolic links, it is possible for an