* <ol>
   *   <li>Use sendfile(2) or equivalent. Requires that both the input channel and the output
   *       channel have their own file descriptors. Generally this only happens when both channels
   *       are files or sockets. This performs zero copies - the bytes never enter userspace.
   *   <li>Use mmap(2) or equivalent. Requires that either the input channel or the output channel

<p>
A send statement sends a value on a channel.
The channel expression must be of <a href="#Channel_types">channel type</a>,
the channel direction must permit send operations,
and the type of the value to be sent must be <a href="#Assignability">assignable</a>
to the channel's element type.
</p>

<pre class="ebnf">
SendStmt = Channel "&lt;-" Expression .
Channel  = Expression .
</pre>

<p>

import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.WritableByteChannel;
import java.util.Arrays;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link ByteStreams}.
 *
 * @author Chris Nokleberg
 */

import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.WritableByteChannel;
import java.util.Arrays;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link ByteStreams}.
 *
 * @author Chris Nokleberg
 */

	// The prepared channel is used to synchronize the statement preparation state.
	cacheStmt := &Stmt{
		Transaction: isTransaction,
		prepared:    make(chan struct{}),
	}
	// Cache the Stmt object with the associated key.
	s.Set(key, cacheStmt)
	// Unlock after completing initialization to prevent deadlocks.
	locker.Unlock()

	// Ensure the prepared channel is closed after the function execution completes.

RUN wget https://github.com/bazelbuild/buildtools/releases/download/v8.2.1/buildozer-linux-amd64 -O /usr/local/bin/buildozer && chmod +x /usr/local/bin/buildozer

RUN curl https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-cli-linux-x86_64.tar.gz | \
    tar zxf - google-cloud-sdk && \
    google-cloud-sdk/install.sh --quiet && \
    ln -s /google-cloud-sdk/bin/gcloud /usr/bin/gcloud

* [Hypercorn](https://hypercorn.readthedocs.io/): ASGI‑сервер, среди прочего совместимый с HTTP/2 и Trio.
* [Daphne](https://github.com/django/daphne): ASGI‑сервер, созданный для Django Channels.
* [Granian](https://github.com/emmett-framework/granian): HTTP‑сервер на Rust для Python‑приложений.
* [NGINX Unit](https://unit.nginx.org/howto/fastapi/): NGINX Unit — лёгкая и многофункциональная среда выполнения веб‑приложений.

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.util.concurrent.InterruptibleTask.Blocker;
import java.nio.channels.spi.AbstractInterruptibleChannel;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.locks.LockSupport;
import junit.framework.TestCase;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.util.concurrent.InterruptibleTask.Blocker;
import java.nio.channels.spi.AbstractInterruptibleChannel;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.locks.LockSupport;
import junit.framework.TestCase;

* [Hypercorn](https://hypercorn.readthedocs.io/): um servidor ASGI compatível com HTTP/2, Trio e outros recursos.
* [Daphne](https://github.com/django/daphne): servidor ASGI construído para Django Channels.
* [Granian](https://github.com/emmett-framework/granian): um servidor HTTP Rust para aplicações Python.
* [NGINX Unit](https://unit.nginx.org/howto/fastapi/): NGINX Unit é um runtime de aplicação web leve e versátil.