LCOV - code coverage report
Current view: top level - netwerk/base - AutoClose.h (source / functions) Hit Total Coverage
Test: output.info Lines: 20 20 100.0 %
Date: 2017-07-14 16:53:18 Functions: 7 7 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
       5             :  * You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef mozilla_net_AutoClose_h
       8             : #define mozilla_net_AutoClose_h
       9             : 
      10             : #include "nsCOMPtr.h"
      11             : 
      12             : namespace mozilla { namespace net {
      13             : 
      14             : // Like an nsAutoPtr for XPCOM streams (e.g. nsIAsyncInputStream) and other
      15             : // refcounted classes that need to have the Close() method called explicitly
      16             : // before they are destroyed.
      17             : template <typename T>
      18             : class AutoClose
      19             : {
      20             : public:
      21           7 :   AutoClose() { }
      22           5 :   ~AutoClose(){
      23           5 :     Close();
      24           5 :   }
      25             : 
      26           6 :   explicit operator bool() const
      27             :   {
      28           6 :     return mPtr;
      29             :   }
      30             : 
      31           3 :   already_AddRefed<T> forget()
      32             :   {
      33           3 :     return mPtr.forget();
      34             :   }
      35             : 
      36           4 :   void takeOver(nsCOMPtr<T> & rhs)
      37             :   {
      38           4 :     Close();
      39           4 :     mPtr = rhs.forget();
      40           4 :   }
      41             : 
      42             :   void takeOver(AutoClose<T> & rhs)
      43             :   {
      44             :     Close();
      45             :     mPtr = rhs.mPtr.forget();
      46             :   }
      47             : 
      48           9 :   void CloseAndRelease()
      49             :   {
      50           9 :     Close();
      51           9 :     mPtr = nullptr;
      52           9 :   }
      53             : 
      54             :   T* operator->() const MOZ_NO_ADDREF_RELEASE_ON_RETURN
      55             :   {
      56             :     return mPtr.operator->();
      57             :   }
      58             : 
      59             : private:
      60          18 :   void Close()
      61             :   {
      62          18 :     if (mPtr) {
      63           1 :       mPtr->Close();
      64             :     }
      65          18 :   }
      66             : 
      67             :   void operator=(const AutoClose<T> &) = delete;
      68             :   AutoClose(const AutoClose<T> &) = delete;
      69             : 
      70             :   nsCOMPtr<T> mPtr;
      71             : };
      72             : 
      73             : } // namespace net
      74             : } // namespace mozilla
      75             : 
      76             : #endif // mozilla_net_AutoClose_h

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