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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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package jdk.jfr.internal.instrument;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;

import jdk.jfr.events.Handlers;
import jdk.jfr.internal.handlers.EventHandler;

See JITracer for an explanation of this code.
/** * See {@link JITracer} for an explanation of this code. */
@JIInstrumentationTarget("sun.nio.ch.SocketChannelImpl") final class SocketChannelImplInstrumentor { private SocketChannelImplInstrumentor() { } private InetSocketAddress remoteAddress; @SuppressWarnings("deprecation") @JIInstrumentationMethod public int read(ByteBuffer dst) throws IOException { EventHandler handler = Handlers.SOCKET_READ; if (!handler.isEnabled()) { return read(dst); } int bytesRead = 0; long start = 0; try { start = EventHandler.timestamp();; bytesRead = read(dst); } finally { long duration = EventHandler.timestamp() - start; if (handler.shouldCommit(duration)) { String hostString = remoteAddress.getAddress().toString(); int delimiterIndex = hostString.lastIndexOf('/'); String host = hostString.substring(0, delimiterIndex); String address = hostString.substring(delimiterIndex + 1); int port = remoteAddress.getPort(); if (bytesRead < 0) { handler.write(start, duration, host, address, port, 0, 0L, true); } else { handler.write(start, duration, host, address, port, 0, bytesRead, false); } } } return bytesRead; } @SuppressWarnings("deprecation") @JIInstrumentationMethod public long read(ByteBuffer[] dsts, int offset, int length) throws IOException { EventHandler handler = Handlers.SOCKET_READ; if (!handler.isEnabled()) { return read(dsts, offset, length); } long bytesRead = 0; long start = 0; try { start = EventHandler.timestamp(); bytesRead = read(dsts, offset, length); } finally { long duration = EventHandler.timestamp() - start; if (handler.shouldCommit(duration)) { String hostString = remoteAddress.getAddress().toString(); int delimiterIndex = hostString.lastIndexOf('/'); String host = hostString.substring(0, delimiterIndex); String address = hostString.substring(delimiterIndex + 1); int port = remoteAddress.getPort(); if (bytesRead < 0) { handler.write(start, duration, host, address, port, 0, 0L, true); } else { handler.write(start, duration, host, address, port, 0, bytesRead, false); } } } return bytesRead; } @SuppressWarnings("deprecation") @JIInstrumentationMethod public int write(ByteBuffer buf) throws IOException { EventHandler handler = Handlers.SOCKET_WRITE; if (!handler.isEnabled()) { return write(buf); } int bytesWritten = 0; long start = 0; try { start = EventHandler.timestamp(); bytesWritten = write(buf); } finally { long duration = EventHandler.timestamp() - start; if (handler.shouldCommit(duration)) { String hostString = remoteAddress.getAddress().toString(); int delimiterIndex = hostString.lastIndexOf('/'); String host = hostString.substring(0, delimiterIndex); String address = hostString.substring(delimiterIndex + 1); int port = remoteAddress.getPort(); long bytes = bytesWritten < 0 ? 0 : bytesWritten; handler.write(start, duration, host, address, port, bytes); } } return bytesWritten; } @SuppressWarnings("deprecation") @JIInstrumentationMethod public long write(ByteBuffer[] srcs, int offset, int length) throws IOException { EventHandler handler = Handlers.SOCKET_WRITE; if (!handler.isEnabled()) { return write(srcs, offset, length); } long bytesWritten = 0; long start = 0; try { start = EventHandler.timestamp(); bytesWritten = write(srcs, offset, length); } finally { long duration = EventHandler.timestamp() - start; if (handler.shouldCommit(duration)) { String hostString = remoteAddress.getAddress().toString(); int delimiterIndex = hostString.lastIndexOf('/'); String host = hostString.substring(0, delimiterIndex); String address = hostString.substring(delimiterIndex + 1); int port = remoteAddress.getPort(); long bytes = bytesWritten < 0 ? 0 : bytesWritten; handler.write(start, duration, host, address, port, bytes); } } return bytesWritten; } }