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/*
* Copyright (c) 2005-2020 Radiance Kirill Grouchnikov. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* o Neither the name of the copyright holder nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.pushingpixels.substance.internal.utils;
import javax.swing.*;
import java.awt.*;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.List;
import java.util.*;
/**
* Tracer for memory usage patterns of Substance look-and-feel. The
* tracer is started when VM has -Dsubstancelaf.traceFile flag. The
* value of this flag specifies the location of trace log file. When activated,
* the tracer runs a thread that collects information on memory usage and
* appends it to the trace log file every X seconds. The
* X (delay) is specified in the constructor. This class is for
* internal use only.
*
* @author Kirill Grouchnikov
*/
public class MemoryAnalyzer extends TrackableThread {
/**
* Sleep delay between trace log iterations.
*/
private long delay;
/**
* Trace logfile name.
*/
private String filename;
/**
* Singleton instance.
*/
private static MemoryAnalyzer instance;
/**
* If true, this tracer has received a request to
* stop.
*/
private static boolean isStopRequest = false;
/**
* Usage strings collected during the sleep time.
*/
private static ArrayList usages;
/**
* Formatting object.
*/
private static SimpleDateFormat sdf;
/**
* Simple constructor.
*
* @param delay
* Sleep delay between trace log iterations.
* @param filename
* Trace logfile name.
*/
private MemoryAnalyzer(long delay, String filename) {
super();
this.delay = delay;
this.filename = filename;
this.setName("Substance memory analyzer");
}
/**
* Starts the memory tracing.
*
* @param delay
* Sleep delay between trace log iterations.
* @param filename
* Trace logfile name.
*/
public static synchronized void commence(long delay, String filename) {
if (instance == null) {
instance = new MemoryAnalyzer(delay, filename);
usages = new ArrayList<>();
// yeah, yeah, it's not multi-thread safe.
sdf = new SimpleDateFormat("HH:mm:ss.SSS");
instance.start();
}
}
/**
* Issues request to stop tracing.
*/
@Override
public synchronized void requestStop() {
isStopRequest = true;
}
/**
* Checks whether a request to stop tracing has been issued.
*
* @return true if a request to stop tracing has been issued,
* false otherwise.
*/
private static synchronized boolean hasStopRequest() {
return isStopRequest;
}
/**
* Checks whether tracer is running.
*
* @return true if tracer is running, false
* otherwise.
*/
public static boolean isRunning() {
return (instance != null);
}
/**
* Adds usage string.
*
* @param usage
* Usage string. Will be output to the trace file at next
* iteration of the tracer.
*/
public static synchronized void enqueueUsage(String usage) {
if (instance != null) {
usages.add(sdf.format(new Date()) + ": " + usage);
}
}
/**
* Returns all queued usages.
*
* @return All queued usages.
*/
public static synchronized ArrayList getUsages() {
ArrayList copy = new ArrayList<>();
copy.addAll(usages);
usages.clear();
return copy;
}
@Override
public void run() {
// output all settings from UIManager
// Need to run on EDT - issue 392
try {
SwingUtilities.invokeAndWait(() -> {
try (BufferedWriter bw = new BufferedWriter(new FileWriter(new File(filename), true))) {
bw.write(sdf.format(new Date()) + "\n");
UIDefaults uidefs = UIManager.getLookAndFeel().getDefaults();
// Retrieve the keys. Can't use an iterator since the
// map may be modified during the iteration. So retrieve
// all at once.
Set
