1 /* 2 * Copyright (c) 2013, 2019, 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 30 import jdk.jfr.events.FileWriteEvent; 31 32 /** 33 * See {@link JITracer} for an explanation of this code. 34 */ 35 @JIInstrumentationTarget("java.io.FileOutputStream") 36 final class FileOutputStreamInstrumentor { 37 38 private FileOutputStreamInstrumentor() { 39 } 40 41 private String path; 42 43 @SuppressWarnings("deprecation") 44 @JIInstrumentationMethod 45 public void write(int b) throws IOException { 46 FileWriteEvent event = FileWriteEvent.EVENT.get(); 47 if (!event.isEnabled()) { 48 write(b); 49 return; 50 } 51 try { 52 event.begin(); 53 write(b); 54 event.bytesWritten = 1; 55 } finally { 56 event.path = path; 57 event.commit(); 58 event.reset(); 59 } 60 } 61 62 @SuppressWarnings("deprecation") 63 @JIInstrumentationMethod 64 public void write(byte b[]) throws IOException { 65 FileWriteEvent event = FileWriteEvent.EVENT.get(); 66 if (!event.isEnabled()) { 67 write(b); 68 return; 69 } 70 try { 71 event.begin(); 72 write(b); 73 event.bytesWritten = b.length; 74 } finally { 75 event.path = path; 76 event.commit(); 77 event.reset(); 78 } 79 } 80 81 @SuppressWarnings("deprecation") 82 @JIInstrumentationMethod 83 public void write(byte b[], int off, int len) throws IOException { 84 FileWriteEvent event = FileWriteEvent.EVENT.get(); 85 if (!event.isEnabled()) { 86 write(b, off, len); 87 return; 88 } 89 try { 90 event.begin(); 91 write(b, off, len); 92 event.bytesWritten = len; 93 } finally { 94 event.path = path; 95 event.commit(); 96 event.reset(); 97 } 98 } 99 }