/*
* 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 jdk.jfr.events.FileReadEvent;
import jdk.jfr.events.FileWriteEvent;
/**
* See {@link JITracer} for an explanation of this code.
*/
@JIInstrumentationTarget("java.io.RandomAccessFile")
final class RandomAccessFileInstrumentor {
private RandomAccessFileInstrumentor() {
}
private String path;
@SuppressWarnings("deprecation")
@JIInstrumentationMethod
public int read() throws IOException {
FileReadEvent event = FileReadEvent.EVENT.get();
if (!event.isEnabled()) {
return read();
}
int result = 0;
try {
event.begin();
result = read();
if (result < 0) {
event.endOfFile = true;
} else {
event.bytesRead = 1;
}
} finally {
event.path = path;
event.commit();
event.reset();
}
return result;
}
@SuppressWarnings("deprecation")
@JIInstrumentationMethod
public int read(byte b[]) throws IOException {
FileReadEvent event = FileReadEvent.EVENT.get();
if (!event.isEnabled()) {
return read(b);
}
int bytesRead = 0;
try {
event.begin();
bytesRead = read(b);
} 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(byte b[], int off, int len) throws IOException {
FileReadEvent event = FileReadEvent.EVENT.get();
if (!event.isEnabled()) {
return read(b, off, len);
}
int bytesRead = 0;
try {
event.begin();
bytesRead = read(b, off, len);
} finally {
if (bytesRead < 0) {
event.endOfFile = true;
} else {
event.bytesRead = bytesRead;
}
event.path = path;
event.commit();
event.reset();
}
return bytesRead;
}
@SuppressWarnings("deprecation")
@JIInstrumentationMethod
public void write(int b) throws IOException {
FileWriteEvent event = FileWriteEvent.EVENT.get();
if (!event.isEnabled()) {
write(b);
return;
}
try {
event.begin();
write(b);
event.bytesWritten = 1;
} finally {
event.path = path;
event.commit();
event.reset();
}
}
@SuppressWarnings("deprecation")
@JIInstrumentationMethod
public void write(byte b[]) throws IOException {
FileWriteEvent event = FileWriteEvent.EVENT.get();
if (!event.isEnabled()) {
write(b);
return;
}
try {
event.begin();
write(b);
event.bytesWritten = b.length;
} finally {
event.path = path;
event.commit();
event.reset();
}
}
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