Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=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
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef nsXPTCUtils_h__
       8             : #define nsXPTCUtils_h__
       9             : 
      10             : #include "xptcall.h"
      11             : #include "mozilla/MemoryReporting.h"
      12             : 
      13             : /**
      14             :  * A helper class that initializes an xptcall helper at construction
      15             :  * and releases it at destruction.
      16             :  */
      17             : class nsAutoXPTCStub : protected nsIXPTCProxy
      18             : {
      19             : public:
      20             :   nsISomeInterface* mXPTCStub;
      21             : 
      22             : protected:
      23         939 :   nsAutoXPTCStub() : mXPTCStub(nullptr) {}
      24             : 
      25             :   nsresult
      26         939 :   InitStub(const nsIID& aIID)
      27             :   {
      28         939 :     return NS_GetXPTCallStub(aIID, this, &mXPTCStub);
      29             :   }
      30             : 
      31         140 :   ~nsAutoXPTCStub()
      32         280 :   {
      33         140 :     if (mXPTCStub) {
      34         140 :       NS_DestroyXPTCallStub(mXPTCStub);
      35             :     }
      36         140 :   }
      37             : 
      38             :   size_t
      39           0 :   SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
      40             :   {
      41           0 :     return mXPTCStub ? NS_SizeOfIncludingThisXPTCallStub(mXPTCStub, aMallocSizeOf) : 0;
      42             :   }
      43             : };
      44             : 
      45             : #endif // nsXPTCUtils_h__