text: // debug_util.h
  
  /*    Copyright 2009 10gen Inc.
   *
   *    This program is free software: you can redistribute it and/or  modify
   *    it under the terms of the GNU Affero General Public License, version 3,
   *    as published by the Free Software Foundation.
   *
   *    This program 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 Affero General Public License for more details.
   *
   *    You should have received a copy of the GNU Affero General Public License
   *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
   *
   *    As a special exception, the copyright holders give permission to link the
   *    code of portions of this program with the OpenSSL library under certain
   *    conditions as described in each individual source file and distribute
   *    linked combinations including the program with the OpenSSL library. You
   *    must comply with the GNU Affero General Public License in all respects
   *    for all of the code used other than as permitted herein. If you modify
   *    file(s) with this exception, you may extend this exception to your
   *    version of the file(s), but you are not obligated to do so. If you do not
   *    wish to do so, delete this exception statement from your version. If you
   *    delete this exception statement from all source files in the program,
   *    then also delete it in the license file.
   */
  
  #pragma once
  
  
  namespace mongo {
  
  #if defined(_DEBUG)
  enum { DEBUG_BUILD = 1 };
  const bool debug = true;
  #else
  enum { DEBUG_BUILD = 0 };
  const bool debug = false;
  #endif
  
  #define MONGO_DEV if (DEBUG_BUILD)
  #define DEV MONGO_DEV
  
  #define MONGO_DEBUGGING if (0)
  #define DEBUGGING MONGO_DEBUGGING
  
  // The following declare one unique counter per enclosing function.
  // NOTE The implementation double-increments on a match, but we don't really care.
  #define MONGO_SOMETIMES(occasion, howOften) \
      for (static unsigned occasion = 0; ++occasion % howOften == 0;)
  #define SOMETIMES MONGO_SOMETIMES
  
  #define MONGO_OCCASIONALLY SOMETIMES(occasionally, 16)
  #define OCCASIONALLY MONGO_OCCASIONALLY
  
  #define MONGO_RARELY SOMETIMES(rarely, 128)
  #define RARELY MONGO_RARELY
  
  #define MONGO_ONCE for (static bool undone = true; undone; undone = false)
  #define ONCE MONGO_ONCE
  
  }  // namespace mongo
  