| /* |
| * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jfr.internal.instrument; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| import jdk.jfr.events.FileForceEvent; |
| import jdk.jfr.events.FileReadEvent; |
| import jdk.jfr.events.FileWriteEvent; |
| |
| /** |
| * See {@link JITracer} for an explanation of this code. |
| */ |
| @JIInstrumentationTarget("sun.nio.ch.FileChannelImpl") |
| final class FileChannelImplInstrumentor { |
| |
| private FileChannelImplInstrumentor() { |
| } |
| |
| private String path; |
| |
| @SuppressWarnings("deprecation") |
| @JIInstrumentationMethod |
| public void force(boolean metaData) throws IOException { |
| FileForceEvent event = FileForceEvent.EVENT.get(); |
| if (!event.isEnabled()) { |
| force(metaData); |
| return; |
| } |
| try { |
| event.begin(); |
| force(metaData); |
| } finally { |
| event.path = path; |
| event.metaData = metaData; |
| event.commit(); |
| event.reset(); |
| } |
| } |
| |
| @SuppressWarnings("deprecation") |
| @JIInstrumentationMethod |
| public int read(ByteBuffer dst) throws IOException { |
| FileReadEvent event = FileReadEvent.EVENT.get(); |
| if (!event.isEnabled()) { |
| return read(dst); |
| } |
| int bytesRead = 0; |
| try { |
| event.begin(); |
| bytesRead = read(dst); |
| } finally { |
| if (bytesRead < 0) { |
| event.endOfFile = true; |
| } else { |
| event.bytesRead = bytesRead; |
| } |
| event.path = path; |
| event.commit(); |
| event.reset(); |
| } |
| return bytesRead; |
| } |
| |
| @SuppressWarnings("deprecation") |
| @JIInstrumentationMethod |
| public int read(ByteBuffer dst, long position) throws IOException { |
| FileReadEvent event = FileReadEvent.EVENT.get(); |
| if (!event.isEnabled()) { |
| return read(dst, position); |
| } |
| int bytesRead = 0; |
| try { |
| event.begin(); |
| bytesRead = read(dst, position); |
| } finally { |
| if (bytesRead < 0) { |
| event.endOfFile = true; |
| } else { |
| event.bytesRead = bytesRead; |
| } |
| event.path = path; |
| event.commit(); |
| event.reset(); |
| } |
| return bytesRead; |
| } |
| |
| @SuppressWarnings("deprecation") |
| @JIInstrumentationMethod |
| public long read(ByteBuffer[] dsts, int offset, int length) throws IOException { |
| FileReadEvent event = FileReadEvent.EVENT.get(); |
| if (!event.isEnabled()) { |
| return read(dsts, offset, length); |
| } |
| long bytesRead = 0; |
| try { |
| event.begin(); |
| bytesRead = read(dsts, offset, length); |
| } finally { |
| if (bytesRead < 0) { |
| event.endOfFile = true; |
| } else { |
| event.bytesRead = bytesRead; |
| } |
| event.path = path; |
| event.commit(); |
| event.reset(); |
| } |
| return bytesRead; |
| } |
| |
| @SuppressWarnings("deprecation") |
| @JIInstrumentationMethod |
| public int write(ByteBuffer src) throws IOException { |
| FileWriteEvent event = FileWriteEvent.EVENT.get(); |
| if (!event.isEnabled()) { |
| return write(src); |
| } |
| int bytesWritten = 0; |
| try { |
| event.begin(); |
| bytesWritten = write(src); |
| } finally { |
| event.bytesWritten = bytesWritten > 0 ? bytesWritten : 0; |
| event.path = path; |
| event.commit(); |
| event.reset(); |
| } |
| return bytesWritten; |
| } |
| |
| @SuppressWarnings("deprecation") |
| @JIInstrumentationMethod |
| public int write(ByteBuffer src, long position) throws IOException { |
| FileWriteEvent event = FileWriteEvent.EVENT.get(); |
| if (!event.isEnabled()) { |
| return write(src, position); |
| } |
| |
| int bytesWritten = 0; |
| try { |
| event.begin(); |
| bytesWritten = write(src, position); |
| } finally { |
| event.bytesWritten = bytesWritten > 0 ? bytesWritten : 0; |
| event.path = path; |
| event.commit(); |
| event.reset(); |
| } |
| return bytesWritten; |
| } |
| |
| @SuppressWarnings("deprecation") |
| @JIInstrumentationMethod |
| public long write(ByteBuffer[] srcs, int offset, int length) throws IOException { |
| FileWriteEvent event = FileWriteEvent.EVENT.get(); |
| if (!event.isEnabled()) { |
| return write(srcs, offset, length); |
| } |
| long bytesWritten = 0; |
| try { |
| event.begin(); |
| bytesWritten = write(srcs, offset, length); |
| } finally { |
| event.bytesWritten = bytesWritten > 0 ? bytesWritten : 0; |
| event.path = path; |
| event.commit(); |
| event.reset(); |
| } |
| return bytesWritten; |
| } |
| } |