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truffle/src/main/java/org/jruby/truffle/tools/CallFrequency.java
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/* | ||
* Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved. This | ||
* code is released under a tri EPL/GPL/LGPL license. You can use it, | ||
* redistribute it and/or modify it under the terms of the: | ||
* | ||
* Eclipse Public License version 1.0 | ||
* GNU General Public License version 2 | ||
* GNU Lesser General Public License version 2.1 | ||
*/ | ||
package org.jruby.truffle.tools; | ||
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import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary; | ||
import com.oracle.truffle.api.object.DynamicObject; | ||
import org.jruby.truffle.Layouts; | ||
import org.jruby.truffle.RubyContext; | ||
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import java.util.ArrayList; | ||
import java.util.Collections; | ||
import java.util.Date; | ||
import java.util.HashMap; | ||
import java.util.List; | ||
import java.util.Map; | ||
import java.util.concurrent.atomic.AtomicLong; | ||
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public class CallFrequency { | ||
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private final RubyContext context; | ||
private final Map<String, AtomicLong> calls = new HashMap<>(); | ||
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public CallFrequency(RubyContext context) { | ||
this.context = context; | ||
} | ||
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@TruffleBoundary | ||
public void called(Object receiver, Object name) { | ||
final DynamicObject metaClass = context.getCoreLibrary().getMetaClass(receiver); | ||
final String formatted = Layouts.CLASS.getFields(metaClass).getName() + "#" + name; | ||
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AtomicLong count; | ||
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synchronized (this) { | ||
count = calls.get(formatted); | ||
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if (count == null) { | ||
count = new AtomicLong(); | ||
calls.put(formatted, count); | ||
} | ||
} | ||
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count.incrementAndGet(); | ||
} | ||
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public void start() { | ||
final Thread printThread = new Thread(() -> { | ||
while (true) { | ||
try { | ||
Thread.sleep(1000); | ||
} catch (InterruptedException e) { | ||
// Doesn't matter | ||
} | ||
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synchronized (this) { | ||
final List<Map.Entry<String, AtomicLong>> entries = new ArrayList<>(calls.entrySet()); | ||
entries.sort((a, b) -> Long.compare(a.getValue().get(), b.getValue().get())); | ||
Collections.reverse(entries); | ||
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while (entries.size() > 10) { | ||
entries.remove(10); | ||
} | ||
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System.err.println(System.currentTimeMillis()); | ||
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for (Map.Entry<String, AtomicLong> entry : entries) { | ||
System.err.println(" " + entry.getValue().get() + " " + entry.getKey()); | ||
} | ||
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calls.clear(); | ||
} | ||
} | ||
}); | ||
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printThread.setDaemon(true); | ||
printThread.start(); | ||
} | ||
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} |