/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* 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).
*
* You should have received a copy of the GNU General Public License version
* 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.btrace.samples;
import com.sun.btrace.BTraceUtils;
import com.sun.btrace.Profiler;
import com.sun.btrace.annotations.*;
/**
* This script demonstrates new capabilities built into BTrace 1.2
* <ol>
* <li>Shortened syntax - when omitting "public" identifier in the class
* definition one can safely omit all other modifiers when declaring methods
* and variables</li>
* <li>Extended syntax for <b>@ProbeMethodName</b> annotation - you can use
* <b>fqn</b> parameter to request a fully qualified method name instead of
* the short one</li>
* <li>Profiling support - you can use {@linkplain Profiler} instance to gather
* performance data with the smallest overhead possible
* </ol>
* @since 1.2
*/
@BTrace class Profiling {
@Property
Profiler swingProfiler = BTraceUtils.Profiling.newProfiler();
@OnMethod(clazz="/javax\\.swing\\..*/", method="/.*/")
void entry(@ProbeMethodName(fqn=true) String probeMethod) {
BTraceUtils.Profiling.recordEntry(swingProfiler, probeMethod);
}
@OnMethod(clazz="/javax\\.swing\\..*/", method="/.*/", location=@Location(value=Kind.RETURN))
void exit(@ProbeMethodName(fqn=true) String probeMethod, @Duration long duration) {
BTraceUtils.Profiling.recordExit(swingProfiler, probeMethod, duration);
}
@OnTimer(5000)
void timer() {
BTraceUtils.Profiling.printSnapshot("Swing performance profile", swingProfiler);
}
}