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| author | ajwong@chromium.org <ajwong@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-05-16 22:35:14 +0000 |
|---|---|---|
| committer | ajwong@chromium.org <ajwong@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-05-16 22:35:14 +0000 |
| commit | 935405891d4f2cb40c4fe287e3e4c06ade5c38ce (patch) | |
| tree | d71dd33fe46eeddb200d92dda1d02c9c0b8a7c10 /base/template_util.h | |
| parent | 409dc6ef2d6095d71f6ea4f59b07106b91626d24 (diff) | |
| download | chromium_src-935405891d4f2cb40c4fe287e3e4c06ade5c38ce.zip chromium_src-935405891d4f2cb40c4fe287e3e4c06ade5c38ce.tar.gz chromium_src-935405891d4f2cb40c4fe287e3e4c06ade5c38ce.tar.bz2 | |
Support binding WeakPtr<> to methods with void return types.
This should give functionality similar to ScopedRunnableMethodFactory.
Note that binding a WeakPtr only make sense with methods with void return types. If the return type is not void, then it is unclear what the function should return when the pointer is invalidated.
This code adds a compile time assert to check the return type.
BUG=35223
TEST=unittests
Review URL: http://codereview.chromium.org/7015064
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@85549 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/template_util.h')
| -rw-r--r-- | base/template_util.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/base/template_util.h b/base/template_util.h index e48af91..66e6a61 100644 --- a/base/template_util.h +++ b/base/template_util.h @@ -1,4 +1,4 @@ -// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Copyright (c) 2011 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. @@ -37,6 +37,9 @@ template <class T> struct is_non_const_reference : false_type {}; template <class T> struct is_non_const_reference<T&> : true_type {}; template <class T> struct is_non_const_reference<const T&> : false_type {}; +template <class T> struct is_void : false_type {}; +template <> struct is_void<void> : true_type {}; + namespace internal { // Types YesType and NoType are guaranteed such that sizeof(YesType) < |