/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2006, University of Maryland
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.classfile;

/**
 * Static methods for accessing objects that are global to an analysis session.
 * Hopefully, this will be limited to the analysis cache.
 * 
 * @author David Hovemeyer
 */
public abstract class Global {
    private static final InheritableThreadLocal<IAnalysisCache> analysisCacheThreadLocal = new InheritableThreadLocal<IAnalysisCache>();

    /**
     * Remove the analysis cache for the current thread. This should be called
     * after all analysis is complete
     * 
     */
    public static void removeAnalysisCacheForCurrentThread() {
        analysisCacheThreadLocal.remove();
    }

    /**
     * Set the analysis cache for the current thread. This should be called
     * before any detectors or analyses that need the cache are used.
     * 
     * @param analysisCache
     *            the analysis cache to set for the current thread
     */
    public static void setAnalysisCacheForCurrentThread(IAnalysisCache analysisCache) {
        analysisCacheThreadLocal.set(analysisCache);
    }

    /**
     * Get the analysis cache for the current thread.
     * 
     * @return the analysis cache for the current thread
     */
    public static IAnalysisCache getAnalysisCache() {
        return analysisCacheThreadLocal.get();
    }
}