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src/scopeguard.h 2.62 KB
7ba6afb5   Steven de Ridder   Initial commit. d...
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  /* ****************************************************************************
   * Copyright 2019 Open Systems Development BV                                 *
   *                                                                            *
   * 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 OSDEV_COMPONENTS_SCOPEGUARD_H
  #define OSDEV_COMPONENTS_SCOPEGUARD_H
  
  #include <functional>
  
  namespace osdev {
  namespace components {
  
  using CleanUpFunction = std::function<void() noexcept>;
  
  /**
   * @brief Ensures that a cleanup function is called at the end of the current scope.
   */
  class ScopeGuard
  {
  public:
  
      /**
       * @brief   Constructs a RAII instance that will call cleanupFunc in it's destructor.
       * @param   cleanupFunc The cleanup function to call at the end of the current scope.
       *          This cleanup function must not throw exceptions. If it does, the behaviour
       *          is undefined.
       */
      ScopeGuard( const CleanUpFunction& cleanupFunc );
  
      // not copyable
      ScopeGuard( const ScopeGuard& ) = delete;
      ScopeGuard& operator=( const ScopeGuard& ) = delete;
  
      ~ScopeGuard() noexcept;
  
  private:
      CleanUpFunction m_cleanupFunc;
  };
  
  }   /* End namespace components */
  }   /* End namespace osdev */
  
  #endif  /* OSDEV_COMPONENTS_SCOPEGUARD_H */