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authorAllan Sandfeld Jensen <allan.jensen@qt.io>2020-10-12 14:27:29 +0200
committerAllan Sandfeld Jensen <allan.jensen@qt.io>2020-10-13 09:35:20 +0000
commitc30a6232df03e1efbd9f3b226777b07e087a1122 (patch)
treee992f45784689f373bcc38d1b79a239ebe17ee23 /chromium/base/threading/sequence_bound.h
parent7b5b123ac58f58ffde0f4f6e488bcd09aa4decd3 (diff)
downloadqtwebengine-chromium-85-based.tar.gz
BASELINE: Update Chromium to 85.0.4183.14085-based
Change-Id: Iaa42f4680837c57725b1344f108c0196741f6057 Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Diffstat (limited to 'chromium/base/threading/sequence_bound.h')
-rw-r--r--chromium/base/threading/sequence_bound.h24
1 files changed, 3 insertions, 21 deletions
diff --git a/chromium/base/threading/sequence_bound.h b/chromium/base/threading/sequence_bound.h
index b235fe221c3..3ee8ef6e4c9 100644
--- a/chromium/base/threading/sequence_bound.h
+++ b/chromium/base/threading/sequence_bound.h
@@ -94,26 +94,6 @@ namespace base {
// SequenceBound<MyDerivedClass>(main_task_runner, ctor args);
// auto c = new SomeConsumer(std::move(widget)); // upcasts to MyClass
-namespace internal {
-
-// If we can't cast |Base*| into |Derived*|, then it's a virtual base if and
-// only if |Base| is actually a base class of |Derived|. Otherwise (including
-// unrelated types), it isn't. We default to Derived* so that the
-// specialization below will apply when the cast to |Derived*| is valid.
-template <typename Base, typename Derived, typename = Derived*>
-struct is_virtual_base_of : public std::is_base_of<Base, Derived> {};
-
-// If we can cast |Base*| into |Derived*|, then it's definitely not a virtual
-// base. When this happens, we'll match the default third template argument.
-template <typename Base, typename Derived>
-struct is_virtual_base_of<Base,
- Derived,
- decltype(static_cast<Derived*>(
- static_cast<Base*>(nullptr)))> : std::false_type {
-};
-
-} // namespace internal
-
template <typename T>
class SequenceBound {
public:
@@ -134,7 +114,9 @@ class SequenceBound {
Args&&... args)
: impl_task_runner_(std::move(task_runner)) {
// Allocate space for but do not construct an instance of |T|.
- storage_ = AlignedAlloc(sizeof(T), alignof(T));
+ // AlignedAlloc() requires alignment be a multiple of sizeof(void*).
+ storage_ = AlignedAlloc(
+ sizeof(T), sizeof(void*) > alignof(T) ? sizeof(void*) : alignof(T));
t_ = reinterpret_cast<T*>(storage_);
// Post construction to the impl thread.