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/*
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* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package jdk.jfr.internal;
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import static jdk.jfr.internal.LogLevel.DEBUG;
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import static jdk.jfr.internal.LogLevel.WARN;
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import static jdk.jfr.internal.LogTag.JFR;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.channels.FileChannel;
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import java.nio.file.StandardOpenOption;
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import java.security.AccessControlContext;
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import java.security.AccessController;
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import java.time.Duration;
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import java.time.Instant;
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import java.time.LocalDateTime;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.LinkedHashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import java.util.StringJoiner;
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import java.util.TimerTask;
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import java.util.TreeMap;
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import jdk.jfr.Configuration;
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import jdk.jfr.FlightRecorderListener;
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import jdk.jfr.Recording;
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import jdk.jfr.RecordingState;
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public final class PlatformRecording implements AutoCloseable {
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private final PlatformRecorder recorder;
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private final long id;
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// Recording settings
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private Map<String, String> settings = new LinkedHashMap<>();
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private Duration duration;
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private Duration maxAge;
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private long maxSize;
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private WriteableUserPath destination;
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private boolean toDisk = true;
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private String name;
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private boolean dumpOnExit;
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// Timestamp information
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private Instant stopTime;
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private Instant startTime;
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// Misc, information
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private RecordingState state = RecordingState.NEW;
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private long size;
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private final LinkedList<RepositoryChunk> chunks = new LinkedList<>();
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private volatile Recording recording;
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private TimerTask stopTask;
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private TimerTask startTask;
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private AccessControlContext noDestinationDumpOnExitAccessControlContext;
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private boolean shuoldWriteActiveRecordingEvent = true;
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PlatformRecording(PlatformRecorder recorder, long id) {
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// Typically the access control context is taken
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// when you call dump(Path) or setDdestination(Path),
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// but if no destination is set and dumponexit=true
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// the control context of the recording is taken when the
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// Recording object is constructed. This works well for
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// -XX:StartFlightRecording and JFR.dump
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this.noDestinationDumpOnExitAccessControlContext = AccessController.getContext();
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this.id = id;
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this.recorder = recorder;
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this.name = String.valueOf(id);
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}
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public void start() {
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RecordingState oldState;
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RecordingState newState;
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synchronized (recorder) {
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oldState = recording.getState();
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if (!Utils.isBefore(state, RecordingState.RUNNING)) {
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throw new IllegalStateException("Recording can only be started once.");
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}
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if (startTask != null) {
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startTask.cancel();
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startTask = null;
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startTime = null;
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}
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recorder.start(this);
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Logger.log(LogTag.JFR, LogLevel.INFO, () -> {
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// Only print non-default values so it easy to see
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// which options were added
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StringJoiner options = new StringJoiner(", ");
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if (!toDisk) {
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options.add("disk=false");
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}
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if (maxAge != null) {
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options.add("maxage=" + Utils.formatTimespan(maxAge, ""));
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}
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if (maxSize != 0) {
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options.add("maxsize=" + Utils.formatBytes(maxSize, ""));
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}
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if (dumpOnExit) {
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options.add("dumponexit=true");
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}
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if (duration != null) {
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options.add("duration=" + Utils.formatTimespan(duration, ""));
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}
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if (destination != null) {
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options.add("filename=" + destination.getText());
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}
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String optionText = options.toString();
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if (optionText.length() != 0) {
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optionText = "{" + optionText + "}";
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}
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return "Started recording \"" + getName() + "\" (" + getId() + ") " + optionText;
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});
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newState = recording.getState();
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}
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notifyIfStateChanged(oldState, newState);
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}
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public boolean stop(String reason) {
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return stop(reason, null);
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}
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public boolean stop(String reason, WriteableUserPath alternativePath) {
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return stop(reason, alternativePath, Collections.emptyMap());
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}
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boolean stop(String reason, WriteableUserPath alternativePath, Map<String, String> overlaySettings) {
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RecordingState oldState;
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RecordingState newState;
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synchronized (recorder) {
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oldState = recording.getState();
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if (stopTask != null) {
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stopTask.cancel();
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stopTask = null;
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}
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recorder.stop(this);
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String endTExt = reason == null ? "" : ". Reason \"" + reason + "\".";
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Logger.log(LogTag.JFR, LogLevel.INFO, "Stopped recording \"" + recording.getName() + "\" (" + recording.getId()+ ")" + endTExt);
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this.stopTime = Instant.now();
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newState = recording.getState();
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}
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WriteableUserPath dest = getDestination();
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if (dest == null && alternativePath != null) {
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dest = alternativePath;
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}
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if (dest != null) {
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try {
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copyTo(dest, reason, overlaySettings);
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Logger.log(LogTag.JFR, LogLevel.INFO, "Wrote recording \"" + recording.getName() + "\" (" + recording.getId()+ ") to " + dest.getText());
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notifyIfStateChanged(newState, oldState);
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close(); // remove if copied out
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} catch (IOException e) {
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// throw e; // BUG8925030
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}
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} else {
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notifyIfStateChanged(newState, oldState);
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}
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return true;
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}
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public void scheduleStart(Duration delay) {
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synchronized (recorder) {
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ensureOkForSchedule();
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startTime = Instant.now().plus(delay);
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LocalDateTime now = LocalDateTime.now().plus(delay);
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setState(RecordingState.DELAYED);
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startTask = createStartTask();
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recorder.getTimer().schedule(startTask, delay.toMillis());
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Logger.log(LogTag.JFR, LogLevel.INFO, "Scheduled recording \"" + recording.getName() + "\" (" + recording.getId()+ ") to start at " + now);
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}
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}
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private void ensureOkForSchedule() {
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if (getState() != RecordingState.NEW) {
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throw new IllegalStateException("Only a new recoridng can be scheduled for start");
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}
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}
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private TimerTask createStartTask() {
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// Taking ref. to recording here.
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// Opens up for memory leaks.
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return new TimerTask() {
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@Override
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public void run() {
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synchronized (recorder) {
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if (getState() != RecordingState.DELAYED) {
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return;
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}
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start();
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}
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}
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};
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}
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void scheduleStart(Instant startTime) {
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synchronized (recorder) {
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ensureOkForSchedule();
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this.startTime = startTime;
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setState(RecordingState.DELAYED);
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startTask = createStartTask();
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recorder.getTimer().schedule(startTask, startTime.toEpochMilli());
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}
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}
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public Map<String, String> getSettings() {
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synchronized (recorder) {
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return settings;
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}
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}
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public long getSize() {
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return size;
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}
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public Instant getStopTime() {
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synchronized (recorder) {
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return stopTime;
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}
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}
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public Instant getStartTime() {
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synchronized (recorder) {
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return startTime;
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}
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}
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public Long getMaxSize() {
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synchronized (recorder) {
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return maxSize;
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}
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}
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public Duration getMaxAge() {
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synchronized (recorder) {
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return maxAge;
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}
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}
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public String getName() {
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synchronized (recorder) {
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return name;
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}
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}
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public RecordingState getState() {
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synchronized (recorder) {
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return state;
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}
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}
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@Override
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public void close() {
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RecordingState oldState;
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RecordingState newState;
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synchronized (recorder) {
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oldState = getState();
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if (RecordingState.CLOSED != getState()) {
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if (startTask != null) {
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startTask.cancel();
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startTask = null;
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}
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recorder.finish(this);
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for (RepositoryChunk c : chunks) {
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removed(c);
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}
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chunks.clear();
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setState(RecordingState.CLOSED);
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Logger.log(LogTag.JFR, LogLevel.INFO, "Closed recording \"" + getName() + "\" (" + getId()+ ")");
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}
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newState = getState();
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}
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notifyIfStateChanged(newState, oldState);
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}
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public void copyTo(WriteableUserPath path, String reason, Map<String, String> dumpSettings) throws IOException {
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synchronized (recorder) {
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RecordingState state = getState();
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if (state == RecordingState.CLOSED) {
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throw new IOException("Recording \"" + name + "\" (id=" + id + ") has been closed, no contents to write");
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}
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if (state == RecordingState.DELAYED || state == RecordingState.NEW) {
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throw new IOException("Recording \"" + name + "\" (id=" + id + ") has not started, no contents to write");
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}
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if (state == RecordingState.STOPPED) {
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// have all we need, just write it
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dumpToFile(path, reason, getId());
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return;
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}
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// Recording is RUNNING, create a clone
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try(Recording r = new Recording()) {
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PlatformRecording clone = PrivateAccess.getInstance().getPlatformRecording(r);
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clone.setShouldWriteActiveRecordingEvent(false);
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clone.setName(getName());
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clone.setDestination(path);
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clone.setToDisk(true);
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// We purposely don't clone settings, since
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// a union a == a
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if (!isToDisk()) {
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// force memory contents to disk
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clone.start();
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} else {
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// using existing chunks on disk
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for (RepositoryChunk c : chunks) {
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clone.add(c);
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}
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clone.setState(RecordingState.RUNNING);
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clone.setStartTime(getStartTime());
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}
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if (dumpSettings.isEmpty()) {
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clone.setSettings(getSettings());
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clone.stop(reason); // dumps to destination path here
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} else {
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// Risk of violating lock order here, since
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// clone.stop() will take recorder lock inside
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// metadata lock, but OK if we already
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// have recorder lock when we entered metadata lock
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Thread.holdsLock(recorder);
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synchronized(MetadataRepository.getInstance()) {
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Thread.holdsLock(recorder);
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Map<String, String> oldSettings = getSettings();
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Map<String, String> newSettings = new HashMap<>(oldSettings);
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// replace with dump settings
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newSettings.putAll(dumpSettings);
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clone.setSettings(newSettings);
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clone.stop(reason);
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}
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}
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}
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return;
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}
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}
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private void dumpToFile(WriteableUserPath userPath, String reason, long id) throws IOException {
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userPath.doPriviligedIO(() -> {
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try (ChunksChannel cc = new ChunksChannel(chunks); FileChannel fc = FileChannel.open(userPath.getReal(), StandardOpenOption.WRITE, StandardOpenOption.APPEND)) {
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cc.transferTo(fc);
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fc.force(true);
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}
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return null;
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});
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}
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public boolean isToDisk() {
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synchronized (recorder) {
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return toDisk;
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}
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}
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public void setMaxSize(long maxSize) {
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synchronized (recorder) {
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if (getState() == RecordingState.CLOSED) {
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throw new IllegalStateException("Can't set max age when recording is closed");
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}
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this.maxSize = maxSize;
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trimToSize();
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}
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}
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public void setDestination(WriteableUserPath userSuppliedPath) throws IOException {
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synchronized (recorder) {
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if (Utils.isState(getState(), RecordingState.STOPPED, RecordingState.CLOSED)) {
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throw new IllegalStateException("Destination can't be set on a recording that has been stopped/closed");
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}
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this.destination = userSuppliedPath;
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}
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}
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public WriteableUserPath getDestination() {
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synchronized (recorder) {
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return destination;
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}
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}
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void setState(RecordingState state) {
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synchronized (recorder) {
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this.state = state;
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}
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}
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void setStartTime(Instant startTime) {
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synchronized (recorder) {
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this.startTime = startTime;
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}
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}
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void setStopTime(Instant timeStamp) {
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synchronized (recorder) {
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stopTime = timeStamp;
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}
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}
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public long getId() {
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synchronized (recorder) {
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return id;
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}
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}
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public void setName(String name) {
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synchronized (recorder) {
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ensureNotClosed();
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this.name = name;
|
|
434 |
}
|
|
435 |
}
|
|
436 |
|
|
437 |
private void ensureNotClosed() {
|
|
438 |
if (getState() == RecordingState.CLOSED) {
|
|
439 |
throw new IllegalStateException("Can't change name on a closed recording");
|
|
440 |
}
|
|
441 |
}
|
|
442 |
|
|
443 |
public void setDumpOnExit(boolean dumpOnExit) {
|
|
444 |
synchronized (recorder) {
|
|
445 |
this.dumpOnExit = dumpOnExit;
|
|
446 |
}
|
|
447 |
}
|
|
448 |
|
|
449 |
public boolean getDumpOnExit() {
|
|
450 |
synchronized (recorder) {
|
|
451 |
return dumpOnExit;
|
|
452 |
}
|
|
453 |
}
|
|
454 |
|
|
455 |
public void setToDisk(boolean toDisk) {
|
|
456 |
synchronized (recorder) {
|
|
457 |
if (Utils.isState(getState(), RecordingState.NEW, RecordingState.DELAYED)) {
|
|
458 |
this.toDisk = toDisk;
|
|
459 |
} else {
|
|
460 |
throw new IllegalStateException("Recording option disk can't be changed after recording has started");
|
|
461 |
}
|
|
462 |
}
|
|
463 |
}
|
|
464 |
|
|
465 |
public void setSetting(String id, String value) {
|
|
466 |
synchronized (recorder) {
|
|
467 |
this.settings.put(id, value);
|
|
468 |
if (getState() == RecordingState.RUNNING) {
|
|
469 |
recorder.updateSettings();
|
|
470 |
}
|
|
471 |
}
|
|
472 |
}
|
|
473 |
|
|
474 |
public void setSettings(Map<String, String> settings) {
|
|
475 |
setSettings(settings, true);
|
|
476 |
}
|
|
477 |
|
|
478 |
private void setSettings(Map<String, String> settings, boolean update) {
|
|
479 |
if (LogTag.JFR_SETTING.shouldLog(LogLevel.INFO.level) && update) {
|
|
480 |
TreeMap<String, String> ordered = new TreeMap<>(settings);
|
|
481 |
Logger.log(LogTag.JFR_SETTING, LogLevel.INFO, "New settings for recording \"" + getName() + "\" (" + getId() + ")");
|
|
482 |
for (Map.Entry<String, String> entry : ordered.entrySet()) {
|
|
483 |
String text = entry.getKey() + "=\"" + entry.getValue() + "\"";
|
|
484 |
Logger.log(LogTag.JFR_SETTING, LogLevel.INFO, text);
|
|
485 |
}
|
|
486 |
}
|
|
487 |
synchronized (recorder) {
|
|
488 |
this.settings = new LinkedHashMap<>(settings);
|
|
489 |
if (getState() == RecordingState.RUNNING && update) {
|
|
490 |
recorder.updateSettings();
|
|
491 |
}
|
|
492 |
}
|
|
493 |
}
|
|
494 |
|
|
495 |
|
|
496 |
private void notifyIfStateChanged(RecordingState newState, RecordingState oldState) {
|
|
497 |
if (oldState == newState) {
|
|
498 |
return;
|
|
499 |
}
|
|
500 |
for (FlightRecorderListener cl : PlatformRecorder.getListeners()) {
|
|
501 |
try {
|
|
502 |
cl.recordingStateChanged(getRecording());
|
|
503 |
} catch (RuntimeException re) {
|
|
504 |
Logger.log(JFR, WARN, "Error notifying recorder listener:" + re.getMessage());
|
|
505 |
}
|
|
506 |
}
|
|
507 |
}
|
|
508 |
|
|
509 |
public void setRecording(Recording recording) {
|
|
510 |
this.recording = recording;
|
|
511 |
}
|
|
512 |
|
|
513 |
public Recording getRecording() {
|
|
514 |
return recording;
|
|
515 |
}
|
|
516 |
|
|
517 |
@Override
|
|
518 |
public String toString() {
|
|
519 |
return getName() + " (id=" + getId() + ") " + getState();
|
|
520 |
}
|
|
521 |
|
|
522 |
public void setConfiguration(Configuration c) {
|
|
523 |
setSettings(c.getSettings());
|
|
524 |
}
|
|
525 |
|
|
526 |
public void setMaxAge(Duration maxAge) {
|
|
527 |
synchronized (recorder) {
|
|
528 |
if (getState() == RecordingState.CLOSED) {
|
|
529 |
throw new IllegalStateException("Can't set max age when recording is closed");
|
|
530 |
}
|
|
531 |
this.maxAge = maxAge;
|
|
532 |
if (maxAge != null) {
|
|
533 |
trimToAge(Instant.now().minus(maxAge));
|
|
534 |
}
|
|
535 |
}
|
|
536 |
}
|
|
537 |
|
|
538 |
void appendChunk(RepositoryChunk chunk) {
|
|
539 |
if (!chunk.isFinished()) {
|
|
540 |
throw new Error("not finished chunk " + chunk.getStartTime());
|
|
541 |
}
|
|
542 |
synchronized (recorder) {
|
|
543 |
if (!toDisk) {
|
|
544 |
return;
|
|
545 |
}
|
|
546 |
if (maxAge != null) {
|
|
547 |
trimToAge(chunk.getEndTime().minus(maxAge));
|
|
548 |
}
|
|
549 |
chunks.addLast(chunk);
|
|
550 |
added(chunk);
|
|
551 |
trimToSize();
|
|
552 |
}
|
|
553 |
}
|
|
554 |
|
|
555 |
private void trimToSize() {
|
|
556 |
if (maxSize == 0) {
|
|
557 |
return;
|
|
558 |
}
|
|
559 |
while (size > maxSize && chunks.size() > 1) {
|
|
560 |
RepositoryChunk c = chunks.removeFirst();
|
|
561 |
removed(c);
|
|
562 |
}
|
|
563 |
}
|
|
564 |
|
|
565 |
private void trimToAge(Instant oldest) {
|
|
566 |
while (!chunks.isEmpty()) {
|
|
567 |
RepositoryChunk oldestChunk = chunks.peek();
|
|
568 |
if (oldestChunk.getEndTime().isAfter(oldest)) {
|
|
569 |
return;
|
|
570 |
}
|
|
571 |
chunks.removeFirst();
|
|
572 |
removed(oldestChunk);
|
|
573 |
}
|
|
574 |
}
|
|
575 |
|
|
576 |
void add(RepositoryChunk c) {
|
|
577 |
chunks.add(c);
|
|
578 |
added(c);
|
|
579 |
}
|
|
580 |
|
|
581 |
private void added(RepositoryChunk c) {
|
|
582 |
c.use();
|
|
583 |
size += c.getSize();
|
|
584 |
Logger.log(JFR, DEBUG, ()-> "Recording \"" + name + "\" (" + id + ") added chunk " + c.toString() + ", current size=" + size);
|
|
585 |
}
|
|
586 |
|
|
587 |
private void removed(RepositoryChunk c) {
|
|
588 |
size -= c.getSize();
|
|
589 |
Logger.log(JFR, DEBUG, ()-> "Recording \"" + name + "\" (" + id + ") removed chunk " + c.toString() + ", current size=" + size);
|
|
590 |
c.release();
|
|
591 |
}
|
|
592 |
|
|
593 |
public List<RepositoryChunk> getChunks() {
|
|
594 |
return chunks;
|
|
595 |
}
|
|
596 |
|
|
597 |
public InputStream open(Instant start, Instant end) throws IOException {
|
|
598 |
synchronized (recorder) {
|
|
599 |
if (getState() != RecordingState.STOPPED) {
|
|
600 |
throw new IOException("Recording must be stopped before it can be read.");
|
|
601 |
}
|
|
602 |
List<RepositoryChunk> chunksToUse = new ArrayList<RepositoryChunk>();
|
|
603 |
for (RepositoryChunk chunk : chunks) {
|
|
604 |
if (chunk.isFinished()) {
|
|
605 |
Instant chunkStart = chunk.getStartTime();
|
|
606 |
Instant chunkEnd = chunk.getEndTime();
|
|
607 |
if (start == null || !chunkEnd.isBefore(start)) {
|
|
608 |
if (end == null || !chunkStart.isAfter(end)) {
|
|
609 |
chunksToUse.add(chunk);
|
|
610 |
}
|
|
611 |
}
|
|
612 |
}
|
|
613 |
}
|
|
614 |
if (chunksToUse.isEmpty()) {
|
|
615 |
return null;
|
|
616 |
}
|
|
617 |
return new ChunkInputStream(chunksToUse);
|
|
618 |
}
|
|
619 |
}
|
|
620 |
|
|
621 |
public Duration getDuration() {
|
|
622 |
synchronized (recorder) {
|
|
623 |
return duration;
|
|
624 |
}
|
|
625 |
}
|
|
626 |
|
|
627 |
void setInternalDuration(Duration duration) {
|
|
628 |
this.duration = duration;
|
|
629 |
}
|
|
630 |
|
|
631 |
public void setDuration(Duration duration) {
|
|
632 |
synchronized (recorder) {
|
|
633 |
if (Utils.isState(getState(), RecordingState.STOPPED, RecordingState.CLOSED)) {
|
|
634 |
throw new IllegalStateException("Duration can't be set after a recording has been stopped/closed");
|
|
635 |
}
|
|
636 |
setInternalDuration(duration);
|
|
637 |
if (getState() != RecordingState.NEW) {
|
|
638 |
updateTimer();
|
|
639 |
}
|
|
640 |
}
|
|
641 |
}
|
|
642 |
|
|
643 |
void updateTimer() {
|
|
644 |
if (stopTask != null) {
|
|
645 |
stopTask.cancel();
|
|
646 |
stopTask = null;
|
|
647 |
}
|
|
648 |
if (getState() == RecordingState.CLOSED) {
|
|
649 |
return;
|
|
650 |
}
|
|
651 |
if (duration != null) {
|
|
652 |
stopTask = createStopTask();
|
|
653 |
recorder.getTimer().schedule(stopTask, new Date(startTime.plus(duration).toEpochMilli()));
|
|
654 |
}
|
|
655 |
}
|
|
656 |
|
|
657 |
TimerTask createStopTask() {
|
|
658 |
return new TimerTask() {
|
|
659 |
@Override
|
|
660 |
public void run() {
|
|
661 |
try {
|
|
662 |
stop("End of duration reached");
|
|
663 |
} catch (Throwable t) {
|
|
664 |
// Prevent malicious user to propagate exception callback in the wrong context
|
|
665 |
Logger.log(LogTag.JFR, LogLevel.ERROR, "Could not stop recording. " + t.getMessage());
|
|
666 |
}
|
|
667 |
}
|
|
668 |
};
|
|
669 |
}
|
|
670 |
|
|
671 |
public Recording newCopy(boolean stop) {
|
|
672 |
return recorder.newCopy(this, stop);
|
|
673 |
}
|
|
674 |
|
|
675 |
void setStopTask(TimerTask stopTask) {
|
|
676 |
synchronized (recorder) {
|
|
677 |
this.stopTask = stopTask;
|
|
678 |
}
|
|
679 |
}
|
|
680 |
|
|
681 |
void clearDestination() {
|
|
682 |
destination = null;
|
|
683 |
}
|
|
684 |
|
|
685 |
public AccessControlContext getNoDestinationDumpOnExitAccessControlContext() {
|
|
686 |
return noDestinationDumpOnExitAccessControlContext;
|
|
687 |
}
|
|
688 |
|
|
689 |
void setShouldWriteActiveRecordingEvent(boolean shouldWrite) {
|
|
690 |
this.shuoldWriteActiveRecordingEvent = shouldWrite;
|
|
691 |
}
|
|
692 |
|
|
693 |
boolean shouldWriteMetadataEvent() {
|
|
694 |
return shuoldWriteActiveRecordingEvent;
|
|
695 |
}
|
|
696 |
}
|