/*
 * 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.
 */

#ifndef MUL_AT_EXIST_
#define MUL_AT_EXIST_

namespace base {
  class AtExitManager {
  public:
    typedef void (*AtExitCallbackType)(void*);
    AtExitManager();

    // The dtor calls all the registered callbacks. Do not try to register more
    // callbacks after this point.
    ~AtExitManager();

    static void RegisterCallback(AtExitCallbackType func, void* param);
    // Registers the specified task to be called at exit.
    static void RegisterTask(fastdelegate::Task<void>* task);
    // Calls the functions registered with RegisterCallback in LIFO order. It
    // is possible to register new callbacks after calling this function.
    static void ProcessCallbacksNow();

  private:
    CriticalSection m_cs;
    std::stack<fastdelegate::Task<void>*> stack_;

    DISALLOW_COPY_AND_ASSIGN_(AtExitManager);
  };
} //end base

#endif