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 public: 19 nsISomeInterface* mXPTCStub; 20 21 protected: nsAutoXPTCStub()22 nsAutoXPTCStub() : mXPTCStub(nullptr) {} 23 InitStub(const nsIID & aIID)24 nsresult InitStub(const nsIID& aIID) { 25 return NS_GetXPTCallStub(aIID, this, &mXPTCStub); 26 } 27 ~nsAutoXPTCStub()28 ~nsAutoXPTCStub() { 29 if (mXPTCStub) { 30 NS_DestroyXPTCallStub(mXPTCStub); 31 } 32 } 33 SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf)34 size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const { 35 return mXPTCStub 36 ? NS_SizeOfIncludingThisXPTCallStub(mXPTCStub, aMallocSizeOf) 37 : 0; 38 } 39 }; 40 41 #endif // nsXPTCUtils_h__ 42