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Create 2272 release branch for CEF3.
git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/2272@1993 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt
154
include/base/internal/cef_raw_scoped_refptr_mismatch_checker.h
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154
include/base/internal/cef_raw_scoped_refptr_mismatch_checker.h
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// Copyright (c) 2011 Google Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Do not include this header file directly. Use base/cef_callback.h instead.
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#ifndef CEF_INCLUDE_BASE_INTERNAL_CEF_RAW_SCOPED_REFPTR_MISMATCH_CHECKER_H_
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#define CEF_INCLUDE_BASE_INTERNAL_CEF_RAW_SCOPED_REFPTR_MISMATCH_CHECKER_H_
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#include "include/base/cef_build.h"
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#include "include/base/cef_ref_counted.h"
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#include "include/base/cef_template_util.h"
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#include "include/base/cef_tuple.h"
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// It is dangerous to post a task with a T* argument where T is a subtype of
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// RefCounted(Base|ThreadSafeBase), since by the time the parameter is used, the
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// object may already have been deleted since it was not held with a
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// scoped_refptr. Example: http://crbug.com/27191
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// The following set of traits are designed to generate a compile error
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// whenever this antipattern is attempted.
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namespace base {
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namespace cef_internal {
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template <typename T>
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struct NeedsScopedRefptrButGetsRawPtr {
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#if defined(OS_WIN)
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enum {
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value = base::false_type::value
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};
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#else
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enum {
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// Human readable translation: you needed to be a scoped_refptr if you are a
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// raw pointer type and are convertible to a RefCounted(Base|ThreadSafeBase)
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// type.
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value = (is_pointer<T>::value &&
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(is_convertible<T, subtle::RefCountedBase*>::value ||
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is_convertible<T, subtle::RefCountedThreadSafeBase*>::value))
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};
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#endif
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};
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template <typename Params>
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struct ParamsUseScopedRefptrCorrectly {
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enum { value = 0 };
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};
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template <>
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struct ParamsUseScopedRefptrCorrectly<Tuple0> {
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enum { value = 1 };
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};
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template <typename A>
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struct ParamsUseScopedRefptrCorrectly<Tuple1<A> > {
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enum { value = !NeedsScopedRefptrButGetsRawPtr<A>::value };
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};
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template <typename A, typename B>
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struct ParamsUseScopedRefptrCorrectly<Tuple2<A, B> > {
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enum { value = !(NeedsScopedRefptrButGetsRawPtr<A>::value ||
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NeedsScopedRefptrButGetsRawPtr<B>::value) };
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};
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template <typename A, typename B, typename C>
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struct ParamsUseScopedRefptrCorrectly<Tuple3<A, B, C> > {
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enum { value = !(NeedsScopedRefptrButGetsRawPtr<A>::value ||
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NeedsScopedRefptrButGetsRawPtr<B>::value ||
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NeedsScopedRefptrButGetsRawPtr<C>::value) };
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};
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template <typename A, typename B, typename C, typename D>
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struct ParamsUseScopedRefptrCorrectly<Tuple4<A, B, C, D> > {
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enum { value = !(NeedsScopedRefptrButGetsRawPtr<A>::value ||
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NeedsScopedRefptrButGetsRawPtr<B>::value ||
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NeedsScopedRefptrButGetsRawPtr<C>::value ||
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NeedsScopedRefptrButGetsRawPtr<D>::value) };
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};
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template <typename A, typename B, typename C, typename D, typename E>
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struct ParamsUseScopedRefptrCorrectly<Tuple5<A, B, C, D, E> > {
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enum { value = !(NeedsScopedRefptrButGetsRawPtr<A>::value ||
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NeedsScopedRefptrButGetsRawPtr<B>::value ||
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NeedsScopedRefptrButGetsRawPtr<C>::value ||
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NeedsScopedRefptrButGetsRawPtr<D>::value ||
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NeedsScopedRefptrButGetsRawPtr<E>::value) };
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};
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template <typename A, typename B, typename C, typename D, typename E,
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typename F>
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struct ParamsUseScopedRefptrCorrectly<Tuple6<A, B, C, D, E, F> > {
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enum { value = !(NeedsScopedRefptrButGetsRawPtr<A>::value ||
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NeedsScopedRefptrButGetsRawPtr<B>::value ||
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NeedsScopedRefptrButGetsRawPtr<C>::value ||
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NeedsScopedRefptrButGetsRawPtr<D>::value ||
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NeedsScopedRefptrButGetsRawPtr<E>::value ||
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NeedsScopedRefptrButGetsRawPtr<F>::value) };
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};
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template <typename A, typename B, typename C, typename D, typename E,
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typename F, typename G>
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struct ParamsUseScopedRefptrCorrectly<Tuple7<A, B, C, D, E, F, G> > {
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enum { value = !(NeedsScopedRefptrButGetsRawPtr<A>::value ||
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NeedsScopedRefptrButGetsRawPtr<B>::value ||
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NeedsScopedRefptrButGetsRawPtr<C>::value ||
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NeedsScopedRefptrButGetsRawPtr<D>::value ||
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NeedsScopedRefptrButGetsRawPtr<E>::value ||
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NeedsScopedRefptrButGetsRawPtr<F>::value ||
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NeedsScopedRefptrButGetsRawPtr<G>::value) };
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};
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template <typename A, typename B, typename C, typename D, typename E,
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typename F, typename G, typename H>
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struct ParamsUseScopedRefptrCorrectly<Tuple8<A, B, C, D, E, F, G, H> > {
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enum { value = !(NeedsScopedRefptrButGetsRawPtr<A>::value ||
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NeedsScopedRefptrButGetsRawPtr<B>::value ||
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NeedsScopedRefptrButGetsRawPtr<C>::value ||
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NeedsScopedRefptrButGetsRawPtr<D>::value ||
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NeedsScopedRefptrButGetsRawPtr<E>::value ||
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NeedsScopedRefptrButGetsRawPtr<F>::value ||
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NeedsScopedRefptrButGetsRawPtr<G>::value ||
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NeedsScopedRefptrButGetsRawPtr<H>::value) };
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};
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} // namespace cef_internal
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} // namespace base
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#endif // CEF_INCLUDE_BASE_INTERNAL_CEF_RAW_SCOPED_REFPTR_MISMATCH_CHECKER_H_
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