SLF4J Extensions is a library of 3 components: Profiler, Extended logger, Event Logging, Logging added with Java agent.

Here is the source code for SLF4J Extensions You can download its pre-compiled version slf4j-ext-1.7.31.jar at SLF4J Download Website.

⏎ org/slf4j/profiler/ProfilerRegistry.java

/**
 * Copyright (c) 2004-2011 QOS.ch
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
package org.slf4j.profiler;

import java.util.HashMap;
import java.util.Map;

/**
 * A minimalist registry of profilers.
 * 
 * @author Ceki Gülcü
 */
public class ProfilerRegistry {

    private static final InheritableThreadLocal<ProfilerRegistry> inheritableThreadLocal = new InheritableThreadLocal<ProfilerRegistry>();

    Map<String, Profiler> profilerMap = new HashMap<String, Profiler>();

    public void put(Profiler profiler) {
        put(profiler.getName(), profiler);
    }

    public void put(String name, Profiler profiler) {
        profilerMap.put(name, profiler);
    }

    public static ProfilerRegistry getThreadContextInstance() {
        ProfilerRegistry pr = inheritableThreadLocal.get();
        if (pr == null) {
            pr = new ProfilerRegistry();
            inheritableThreadLocal.set(pr);
        }
        return pr;
    }

    public Profiler get(String name) {
        return profilerMap.get(name);
    }

    public void clear() {
        profilerMap.clear();
    }
}

⏎ org/slf4j/profiler/ProfilerRegistry.java

Or download all of them as a single archive file:

File name: slf4j-ext-1.7.31-sources.jar
File size: 40408 bytes
Release date: 2021-06-17
Download 

⇒ Source Code for SLF4J 1.7.31 Migrator

⇐ Source Code for SLF4J 1.7.31 Bridge to Log4J 1.3

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