1 // Copyright 2012 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/functional/callback_internal.h"
6
7 #include "base/check.h"
8 #include "base/notreached.h"
9
10 namespace base {
11 namespace internal {
12
13 namespace {
14
QueryCancellationTraitsForNonCancellables(const BindStateBase *,BindStateBase::CancellationQueryMode mode)15 bool QueryCancellationTraitsForNonCancellables(
16 const BindStateBase*,
17 BindStateBase::CancellationQueryMode mode) {
18 switch (mode) {
19 case BindStateBase::IS_CANCELLED:
20 return false;
21 case BindStateBase::MAYBE_VALID:
22 return true;
23 }
24 NOTREACHED();
25 }
26
27 } // namespace
28
Destruct(const BindStateBase * bind_state)29 void BindStateBaseRefCountTraits::Destruct(const BindStateBase* bind_state) {
30 bind_state->destructor_(bind_state);
31 }
32
BindStateBase(InvokeFuncStorage polymorphic_invoke,void (* destructor)(const BindStateBase *))33 BindStateBase::BindStateBase(InvokeFuncStorage polymorphic_invoke,
34 void (*destructor)(const BindStateBase*))
35 : BindStateBase(polymorphic_invoke,
36 destructor,
37 &QueryCancellationTraitsForNonCancellables) {}
38
BindStateBase(InvokeFuncStorage polymorphic_invoke,void (* destructor)(const BindStateBase *),bool (* query_cancellation_traits)(const BindStateBase *,CancellationQueryMode))39 BindStateBase::BindStateBase(
40 InvokeFuncStorage polymorphic_invoke,
41 void (*destructor)(const BindStateBase*),
42 bool (*query_cancellation_traits)(const BindStateBase*,
43 CancellationQueryMode))
44 : polymorphic_invoke_(polymorphic_invoke),
45 destructor_(destructor),
46 query_cancellation_traits_(query_cancellation_traits) {}
47
48 BindStateHolder& BindStateHolder::operator=(BindStateHolder&&) noexcept =
49 default;
50
51 BindStateHolder::BindStateHolder(const BindStateHolder&) = default;
52
53 BindStateHolder& BindStateHolder::operator=(const BindStateHolder&) = default;
54
55 BindStateHolder::~BindStateHolder() = default;
56
Reset()57 void BindStateHolder::Reset() {
58 bind_state_ = nullptr;
59 }
60
IsCancelled() const61 bool BindStateHolder::IsCancelled() const {
62 DCHECK(bind_state_);
63 return bind_state_->IsCancelled();
64 }
65
MaybeValid() const66 bool BindStateHolder::MaybeValid() const {
67 DCHECK(bind_state_);
68 return bind_state_->MaybeValid();
69 }
70
71 } // namespace internal
72 } // namespace base
73