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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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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package jdk.jfr.internal.instrument;

import java.io.IOException;

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("java.io.RandomAccessFile") final class RandomAccessFileInstrumentor { private RandomAccessFileInstrumentor() { } private String path; @SuppressWarnings("deprecation") @JIInstrumentationMethod public int read() throws IOException { EventHandler handler = Handlers.FILE_READ; if (!handler.isEnabled()) { return read(); } int result = 0; long bytesRead = 0; boolean endOfFile = false; long start = 0; try { start = EventHandler.timestamp(); result = read(); if (result < 0) { endOfFile = true; } else { bytesRead = 1; } } finally { long duration = EventHandler.timestamp() - start; if (handler.shouldCommit(duration)) { handler.write(start, duration, path, bytesRead, endOfFile); } } return result; } @SuppressWarnings("deprecation") @JIInstrumentationMethod public int read(byte b[]) throws IOException { EventHandler handler = Handlers.FILE_READ; if (!handler.isEnabled()) { return read(b); } int bytesRead = 0; long start = 0; try { start = EventHandler.timestamp(); bytesRead = read(b); } finally { long duration = EventHandler.timestamp() - start; if (handler.shouldCommit(duration)) { if (bytesRead < 0) { handler.write(start, duration, path, 0L, true); } else { handler.write(start, duration, path, bytesRead, false); } } } return bytesRead; } @SuppressWarnings("deprecation") @JIInstrumentationMethod public int read(byte b[], int off, int len) throws IOException { EventHandler handler = Handlers.FILE_READ; if (!handler.isEnabled()) { return read(b, off, len); } int bytesRead = 0; long start = 0; try { start = EventHandler.timestamp(); bytesRead = read(b, off, len); } finally { long duration = EventHandler.timestamp() - start; if (handler.shouldCommit(duration)) { if (bytesRead < 0) { handler.write(start, duration, path, 0L, true); } else { handler.write(start, duration, path, bytesRead, false); } } } return bytesRead; } @SuppressWarnings("deprecation") @JIInstrumentationMethod public void write(int b) throws IOException { EventHandler handler = Handlers.FILE_WRITE; if (!handler.isEnabled()) { write(b); return; } long bytesWritten = 0; long start = 0; try { start = EventHandler.timestamp(); write(b); bytesWritten = 1; } finally { long duration = EventHandler.timestamp() - start; if (handler.shouldCommit(duration)) { handler.write(start, duration, path, bytesWritten); } } } @SuppressWarnings("deprecation") @JIInstrumentationMethod public void write(byte b[]) throws IOException { EventHandler handler = Handlers.FILE_WRITE; if (!handler.isEnabled()) { write(b); return; } long bytesWritten = 0; long start = 0; try { start = EventHandler.timestamp(); write(b); bytesWritten = b.length; } finally { long duration = EventHandler.timestamp(); if (handler.shouldCommit(duration)) { handler.write(start, duration, path, bytesWritten); } } } @SuppressWarnings("deprecation") @JIInstrumentationMethod public void write(byte b[], int off, int len) throws IOException { EventHandler handler = Handlers.FILE_WRITE; if (!handler.isEnabled()) { write(b, off, len); return; } long bytesWritten = 0; long start = 0; try { start = EventHandler.timestamp(); write(b, off, len); bytesWritten = len; } finally { long duration = EventHandler.timestamp() - start; if (handler.shouldCommit(duration)) { handler.write(start, duration, path, bytesWritten); } } } }