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