/***** BEGIN LICENSE BLOCK *****
 * Version: EPL 2.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Eclipse Public
 * License Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/epl-v20.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the EPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the EPL, the GPL or the LGPL.
 ***** END LICENSE BLOCK *****/

package org.jruby.runtime.profile;

/**
 * Each {@link org.jruby.runtime.ThreadContext ThreadContext} has an ProfileCollection property in profile mode.
 * The methods of this class will be called by jruby.
 *
 * @author Andre Kullmann
 */
public interface ProfileCollection {

    /**
     * Begin profiling a new method, aggregating the current time diff in the previous
     * method's profile slot.
     *
     * @param calledMethod the serial number of the next method to profile
     */
    public void profileEnter( long calledMethod );

    /**
     * Fall back to previously profiled method after current method has returned.
     *
     * @param callingMethod the serial number of the next method to profile
     * @param  startTime the nano timestamp at which the given callingMethod was entered
     */
    public void profileExit( long callingMethod, long startTime );
}
