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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 "content/browser/cancelable_request.h" | 5 #include "content/browser/cancelable_request.h" |
| 6 | 6 |
| 7 CancelableRequestProvider::CancelableRequestProvider() | 7 CancelableRequestProvider::CancelableRequestProvider() |
| 8 : next_handle_(1) { | 8 : next_handle_(1) { |
| 9 } | 9 } |
| 10 | 10 |
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| 47 void CancelableRequestProvider::CancelRequestLocked( | 47 void CancelableRequestProvider::CancelRequestLocked( |
| 48 const CancelableRequestMap::iterator& item) { | 48 const CancelableRequestMap::iterator& item) { |
| 49 pending_request_lock_.AssertAcquired(); | 49 pending_request_lock_.AssertAcquired(); |
| 50 if (item == pending_requests_.end()) { | 50 if (item == pending_requests_.end()) { |
| 51 NOTREACHED() << "Trying to cancel an unknown request"; | 51 NOTREACHED() << "Trying to cancel an unknown request"; |
| 52 return; | 52 return; |
| 53 } | 53 } |
| 54 | 54 |
| 55 item->second->consumer()->OnRequestRemoved(this, item->first); | 55 item->second->consumer()->OnRequestRemoved(this, item->first); |
| 56 item->second->set_canceled(); | 56 item->second->set_canceled(); |
| 57 completed_requests_[item->first] = pending_requests_[item->first]; |
| 57 pending_requests_.erase(item); | 58 pending_requests_.erase(item); |
| 58 } | 59 } |
| 59 | 60 |
| 60 void CancelableRequestProvider::RequestCompleted(Handle handle) { | 61 void CancelableRequestProvider::RequestCompleted(Handle handle) { |
| 61 CancelableRequestConsumerBase* consumer = NULL; | 62 CancelableRequestConsumerBase* consumer = NULL; |
| 62 { | 63 { |
| 63 base::AutoLock lock(pending_request_lock_); | 64 base::AutoLock lock(pending_request_lock_); |
| 64 | 65 |
| 65 CancelableRequestMap::iterator i = pending_requests_.find(handle); | 66 CancelableRequestMap::iterator i = pending_requests_.find(handle); |
| 66 if (i == pending_requests_.end()) { | 67 if (i == pending_requests_.end()) { |
| 67 NOTREACHED() << "Trying to cancel an unknown request"; | 68 NOTREACHED() << "Trying to cancel an unknown request"; |
| 68 return; | 69 return; |
| 69 } | 70 } |
| 70 consumer = i->second->consumer(); | 71 consumer = i->second->consumer(); |
| 71 | 72 |
| 72 // This message should only get sent if the class is not cancelled, or | 73 // This message should only get sent if the class is not cancelled, or |
| 73 // else the consumer might be gone). | 74 // else the consumer might be gone). |
| 74 DCHECK(!i->second->canceled()); | 75 DCHECK(!i->second->canceled()); |
| 75 | 76 |
| 77 completed_requests_[i->first] = pending_requests_[i->first]; |
| 76 pending_requests_.erase(i); | 78 pending_requests_.erase(i); |
| 77 } | 79 } |
| 78 | 80 |
| 79 // Notify the consumer that the request is gone | 81 // Notify the consumer that the request is gone |
| 80 consumer->OnRequestRemoved(this, handle); | 82 consumer->OnRequestRemoved(this, handle); |
| 81 } | 83 } |
| 82 | 84 |
| 85 bool CancelableRequestProvider::IsRequestCompleted(Handle handle) { |
| 86 CancelableRequestMap::iterator i = completed_requests_.find(handle); |
| 87 return i != completed_requests_.end(); |
| 88 } |
| 89 |
| 83 // MSVC doesn't like complex extern templates and DLLs. | 90 // MSVC doesn't like complex extern templates and DLLs. |
| 84 #if !defined(COMPILER_MSVC) | 91 #if !defined(COMPILER_MSVC) |
| 85 // Emit our most common CancelableRequestConsumer. | 92 // Emit our most common CancelableRequestConsumer. |
| 86 template class CancelableRequestConsumerTSimple<int>; | 93 template class CancelableRequestConsumerTSimple<int>; |
| 87 | 94 |
| 88 // And the most common subclass of it. | 95 // And the most common subclass of it. |
| 89 template class CancelableRequestConsumerT<int, 0>; | 96 template class CancelableRequestConsumerT<int, 0>; |
| 90 #endif | 97 #endif |
| 91 | 98 |
| 92 CancelableRequestBase::CancelableRequestBase() | 99 CancelableRequestBase::CancelableRequestBase() |
| 93 : provider_(NULL), | 100 : provider_(NULL), |
| 94 consumer_(NULL), | 101 consumer_(NULL), |
| 95 handle_(0) { | 102 handle_(0) { |
| 96 callback_thread_ = MessageLoop::current(); | 103 callback_thread_ = MessageLoop::current(); |
| 97 } | 104 } |
| 98 | 105 |
| 99 CancelableRequestBase::~CancelableRequestBase() { | 106 CancelableRequestBase::~CancelableRequestBase() { |
| 100 } | 107 } |
| 101 | 108 |
| 102 void CancelableRequestBase::Init(CancelableRequestProvider* provider, | 109 void CancelableRequestBase::Init(CancelableRequestProvider* provider, |
| 103 CancelableRequestProvider::Handle handle, | 110 CancelableRequestProvider::Handle handle, |
| 104 CancelableRequestConsumerBase* consumer) { | 111 CancelableRequestConsumerBase* consumer) { |
| 105 DCHECK(handle_ == 0 && provider_ == NULL && consumer_ == NULL); | 112 DCHECK(handle_ == 0 && provider_ == NULL && consumer_ == NULL); |
| 106 provider_ = provider; | 113 provider_ = provider; |
| 107 consumer_ = consumer; | 114 consumer_ = consumer; |
| 108 handle_ = handle; | 115 handle_ = handle; |
| 109 } | 116 } |
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