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This module implements a sampling CPU and memory profiler (in contrast to the Profiler which uses instrumentation).<BR><BR> CPU profiling requires a JMX connection to the monitored application, once correctly set up you can profile both local and remote applications.<BR><BR> Memory profiling requires Attach API, so only local applications running on JDK 6+ are supported.

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/*
 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 * 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).
 *
 * 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package org.graalvm.visualvm.sampler.cpu;

import org.graalvm.visualvm.lib.jfluid.results.RuntimeCCTNodeProcessor;
import org.graalvm.visualvm.lib.jfluid.results.cpu.FlatProfileContainer;
import org.graalvm.visualvm.lib.jfluid.results.cpu.FlatProfileProvider;
import org.graalvm.visualvm.lib.jfluid.results.cpu.cct.nodes.RuntimeCPUCCTNode;

/**
 *
 * @author Tomas Hurka
 */
final class FlatProfileBuilder implements FlatProfileProvider {
    //~ Instance fields ----------------------------------------------------------------------------------------------------------
    
    private FlatProfileContainer lastFlatProfile = null;
    private RuntimeCPUCCTNode appNode;
    private CCTFlattener cctFlattener;
    
    
    //~ Methods ------------------------------------------------------------------------------------------------------------------
    
    FlatProfileBuilder(RuntimeCPUCCTNode node, CCTFlattener flattener) {
        appNode = node;
        cctFlattener = flattener;
    }
    
    public synchronized FlatProfileContainer createFlatProfile() {
        if (appNode == null) {
            return null;
        }
//        client.getStatus().beginTrans(false);

        try {
            RuntimeCCTNodeProcessor.process(
                appNode, 
                cctFlattener
            );

            lastFlatProfile = cctFlattener.getFlatProfile();

        } finally {
//            client.getStatus().endTrans();
        }

        return lastFlatProfile;
    }
}