1 /* 2 * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.internal.instrument; 27 28 import java.io.IOException; 29 import java.net.InetAddress; 30 31 import jdk.jfr.events.SocketReadEvent; 32 33 /** 34 * See {@link JITracer} for an explanation of this code. 35 */ 36 @JIInstrumentationTarget("java.net.SocketInputStream") 37 @JITypeMapping(from = "jdk.jfr.internal.instrument.SocketInputStreamInstrumentor$AbstractPlainSocketImpl", 38 to = "java.net.AbstractPlainSocketImpl") 39 final class SocketInputStreamInstrumentor { 40 41 private SocketInputStreamInstrumentor() { 42 } 43 44 @SuppressWarnings("deprecation") 45 @JIInstrumentationMethod 46 int read(byte b[], int off, int length, int timeout) throws IOException { 47 SocketReadEvent event = SocketReadEvent.EVENT.get(); 48 if (!event.isEnabled()) { 49 return read(b, off, length, timeout); 50 } 51 int bytesRead = 0; 52 try { 53 event.begin(); 54 bytesRead = read(b, off, length, timeout); 55 } finally { 56 event.end(); 57 if (event.shouldCommit()) { 58 String hostString = impl.address.toString(); 59 int delimiterIndex = hostString.lastIndexOf('/'); 60 61 event.host = hostString.substring(0, delimiterIndex); 62 event.address = hostString.substring(delimiterIndex + 1); 63 event.port = impl.port; 64 if (bytesRead < 0) { 65 event.endOfStream = true; 66 } else { 67 event.bytesRead = bytesRead; 68 } 69 event.timeout = timeout; 70 71 event.commit(); 72 event.reset(); 73 } 74 } 75 return bytesRead; 76 } 77 78 private AbstractPlainSocketImpl impl = null; 79 80 void silenceFindBugsUnwrittenField(InetAddress dummy) { 81 impl.address = dummy; 82 } 83 84 static class AbstractPlainSocketImpl { 85 InetAddress address; 86 int port; 87 } 88 }