com.sun.javafx.tk.quantum.PerformanceTrackerHelper Maven / Gradle / Ivy
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.javafx.tk.quantum;
import com.sun.javafx.tk.Toolkit;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
/**
* Class containing implementation for logging, and performance tracking.
*/
abstract class PerformanceTrackerHelper {
private static final PerformanceTrackerHelper instance = createInstance();
public static PerformanceTrackerHelper getInstance() {
return instance;
}
private PerformanceTrackerHelper() {
}
private static PerformanceTrackerHelper createInstance() {
PerformanceTrackerHelper trackerImpl = AccessController.doPrivileged(
new PrivilegedAction() {
@Override
public PerformanceTrackerHelper run() {
try {
if (System.getProperty("sun.perflog") != null) {
final PerformanceTrackerHelper trackerImpl =
new PerformanceTrackerDefaultImpl();
if (System.getProperty(
"sun.perflog.fx.exitflush") != null) {
Runtime.getRuntime().addShutdownHook(
new Thread() {
@Override
public void run() {
trackerImpl.outputLog();
}
});
}
return trackerImpl;
}
} catch (Throwable t) {
}
return null;
}
});
if (trackerImpl == null) {
trackerImpl = new PerformanceTrackerDummyImpl();
}
return trackerImpl;
}
public abstract void logEvent(final String s);
public abstract void outputLog();
public abstract boolean isPerfLoggingEnabled();
public final long nanoTime() {
return Toolkit.getToolkit().getMasterTimer().nanos();
}
private static final class PerformanceTrackerDefaultImpl
extends PerformanceTrackerHelper {
private long firstTime;
private long lastTime;
private final Method logEventMethod;
private final Method outputLogMethod;
private final Method getStartTimeMethod;
private final Method setStartTimeMethod;
public PerformanceTrackerDefaultImpl() throws ClassNotFoundException,
NoSuchMethodException {
final Class perfLoggerClass =
Class.forName("sun.misc.PerformanceLogger", true, null);
logEventMethod =
perfLoggerClass.getMethod("setTime", String.class);
outputLogMethod =
perfLoggerClass.getMethod("outputLog");
getStartTimeMethod =
perfLoggerClass.getMethod("getStartTime");
setStartTimeMethod =
perfLoggerClass.getMethod("setStartTime", String.class,
long.class);
}
@Override
public void logEvent(final String s) {
final long time = System.currentTimeMillis();
if (firstTime == 0) {
firstTime = time;
}
try {
logEventMethod.invoke(
null,
"JavaFX> " + s + " ("
+ (time - firstTime) + "ms total, "
+ (time - lastTime) + "ms)");
} catch (IllegalAccessException ex) {
} catch (IllegalArgumentException ex) {
} catch (InvocationTargetException ex) {
}
lastTime = time;
}
@Override
public void outputLog() {
logLaunchTime();
// Output the log
try {
outputLogMethod.invoke(null);
} catch (Exception e) {
}
}
@Override
public boolean isPerfLoggingEnabled() {
return true;
}
private void logLaunchTime() {
try {
// Attempt to log launchTime, if not set already
if ((Long) getStartTimeMethod.invoke(null) <= 0) {
// Standalone apps record launch time as sysprop
String launchTimeString = AccessController.doPrivileged(
new PrivilegedAction() {
@Override
public String run() {
return System.getProperty("launchTime");
}
});
if (launchTimeString != null
&& !launchTimeString.equals("")) {
long launchTime = Long.parseLong(launchTimeString);
setStartTimeMethod.invoke(
null, "LaunchTime", launchTime);
}
}
} catch (Throwable t) {
t.printStackTrace();
}
}
}
private static final class PerformanceTrackerDummyImpl
extends PerformanceTrackerHelper {
@Override
public void logEvent(final String s) {
}
@Override
public void outputLog() {
}
@Override
public boolean isPerfLoggingEnabled() {
return false;
}
}
}