The Tor Browser: content/base/src/nsStubMutationObserver.h@deefc01c0e14

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 /*

     7  * nsStubMutationObserver is an implementation of the nsIMutationObserver

     8  * interface (except for the methods on nsISupports) that is intended to be

     9  * used as a base class within the content/layout library.  All methods do

    10  * nothing.

    11  */

    13 #ifndef nsStubMutationObserver_h_

    14 #define nsStubMutationObserver_h_

    16 #include "nsIMutationObserver.h"

    18 /**

    19  * There are two advantages to inheriting from nsStubMutationObserver

    20  * rather than directly from nsIMutationObserver:

    21  *  1. smaller compiled code size (since there's no need for the code

    22  *     for the empty virtual function implementations for every

    23  *     nsIMutationObserver implementation)

    24  *  2. the performance of document's loop over observers benefits from

    25  *     the fact that more of the functions called are the same (which

    26  *     can reduce instruction cache misses and perhaps improve branch

    27  *     prediction)

    28  */

    29 class nsStubMutationObserver : public nsIMutationObserver {

    30 public:

    31   NS_DECL_NSIMUTATIONOBSERVER

    32 };

    34 #endif /* !defined(nsStubMutationObserver_h_) */

The Tor Browser / file revision

content/base/src/nsStubMutationObserver.h@deefc01c0e14

content/base/src/nsStubMutationObserver.h