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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "base/sequence_checker_impl.h" | 5 #include "base/sequence_checker_impl.h" |
| 6 | 6 |
| 7 #include "base/logging.h" | 7 #include "base/logging.h" |
| 8 #include "base/memory/ptr_util.h" | 8 #include "base/memory/ptr_util.h" |
| 9 #include "base/sequence_token.h" | 9 #include "base/sequence_token.h" |
| 10 #include "base/threading/sequenced_worker_pool.h" | 10 #include "base/threading/sequenced_worker_pool.h" |
| 11 #include "base/threading/thread_checker_impl.h" | 11 #include "base/threading/thread_checker_impl.h" |
| 12 | 12 |
| 13 namespace base { | 13 namespace base { |
| 14 | 14 |
| 15 class SequenceCheckerImpl::Core { | 15 class SequenceCheckerImpl::Core { |
| 16 public: | 16 public: |
| 17 Core() | 17 Core() |
| 18 : sequence_token_(SequenceToken::GetForCurrentThread()), | 18 : sequence_token_(SequenceToken::GetForCurrentThread()), |
| 19 sequenced_worker_pool_token_( | 19 sequenced_worker_pool_token_( |
| 20 SequencedWorkerPool::GetSequenceTokenForCurrentThread()) { | 20 SequencedWorkerPool::GetSequenceTokenForCurrentThread()) { |
| 21 // SequencedWorkerPool doesn't use SequenceToken and code outside of | 21 // SequencedWorkerPool doesn't use SequenceToken and code outside of |
| 22 // SequenceWorkerPool doesn't set a SequencedWorkerPool token. | 22 // SequenceWorkerPool doesn't set a SequencedWorkerPool token. |
| 23 DCHECK(!sequence_token_.IsValid() || | 23 DCHECK(!sequence_token_.IsValid() || |
| 24 !sequenced_worker_pool_token_.IsValid()); | 24 !sequenced_worker_pool_token_.IsValid()); |
| 25 } | 25 } |
| 26 | 26 |
| 27 ~Core() = default; | 27 ~Core() = default; |
| 28 | 28 |
| 29 bool CalledOnValidThread() const { | 29 bool CalledOnValidSequence() const { |
| 30 if (sequence_token_.IsValid()) | 30 if (sequence_token_.IsValid()) |
| 31 return sequence_token_ == SequenceToken::GetForCurrentThread(); | 31 return sequence_token_ == SequenceToken::GetForCurrentThread(); |
| 32 | 32 |
| 33 if (sequenced_worker_pool_token_.IsValid()) { | 33 if (sequenced_worker_pool_token_.IsValid()) { |
| 34 return sequenced_worker_pool_token_.Equals( | 34 return sequenced_worker_pool_token_.Equals( |
| 35 SequencedWorkerPool::GetSequenceTokenForCurrentThread()); | 35 SequencedWorkerPool::GetSequenceTokenForCurrentThread()); |
| 36 } | 36 } |
| 37 | 37 |
| 38 // SequenceChecker behaves as a ThreadChecker when it is not bound to a | 38 // SequenceChecker behaves as a ThreadChecker when it is not bound to a |
| 39 // valid sequence token. | 39 // valid sequence token. |
| (...skipping 11 matching lines...) Expand all Loading... |
| 51 ThreadCheckerImpl thread_checker_; | 51 ThreadCheckerImpl thread_checker_; |
| 52 }; | 52 }; |
| 53 | 53 |
| 54 SequenceCheckerImpl::SequenceCheckerImpl() : core_(MakeUnique<Core>()) {} | 54 SequenceCheckerImpl::SequenceCheckerImpl() : core_(MakeUnique<Core>()) {} |
| 55 SequenceCheckerImpl::~SequenceCheckerImpl() = default; | 55 SequenceCheckerImpl::~SequenceCheckerImpl() = default; |
| 56 | 56 |
| 57 bool SequenceCheckerImpl::CalledOnValidSequence() const { | 57 bool SequenceCheckerImpl::CalledOnValidSequence() const { |
| 58 AutoLock auto_lock(lock_); | 58 AutoLock auto_lock(lock_); |
| 59 if (!core_) | 59 if (!core_) |
| 60 core_ = MakeUnique<Core>(); | 60 core_ = MakeUnique<Core>(); |
| 61 return core_->CalledOnValidThread(); | 61 return core_->CalledOnValidSequence(); |
| 62 } | 62 } |
| 63 | 63 |
| 64 void SequenceCheckerImpl::DetachFromSequence() { | 64 void SequenceCheckerImpl::DetachFromSequence() { |
| 65 AutoLock auto_lock(lock_); | 65 AutoLock auto_lock(lock_); |
| 66 core_.reset(); | 66 core_.reset(); |
| 67 } | 67 } |
| 68 | 68 |
| 69 } // namespace base | 69 } // namespace base |
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