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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 "net/dns/serial_worker.h" | 5 #include "net/dns/serial_worker.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/location.h" | 8 #include "base/location.h" |
9 #include "base/message_loop/message_loop_proxy.h" | 9 #include "base/message_loop/message_loop_proxy.h" |
10 #include "base/threading/worker_pool.h" | 10 #include "base/threading/worker_pool.h" |
11 | 11 |
12 namespace net { | 12 namespace net { |
13 | 13 |
14 SerialWorker::SerialWorker() | 14 SerialWorker::SerialWorker() |
15 : message_loop_(base::MessageLoopProxy::current()), | 15 : message_loop_(base::MessageLoopProxy::current()), state_(IDLE) { |
16 state_(IDLE) {} | 16 } |
17 | 17 |
18 SerialWorker::~SerialWorker() {} | 18 SerialWorker::~SerialWorker() { |
| 19 } |
19 | 20 |
20 void SerialWorker::WorkNow() { | 21 void SerialWorker::WorkNow() { |
21 DCHECK(message_loop_->BelongsToCurrentThread()); | 22 DCHECK(message_loop_->BelongsToCurrentThread()); |
22 switch (state_) { | 23 switch (state_) { |
23 case IDLE: | 24 case IDLE: |
24 if (!base::WorkerPool::PostTask(FROM_HERE, base::Bind( | 25 if (!base::WorkerPool::PostTask( |
25 &SerialWorker::DoWorkJob, this), false)) { | 26 FROM_HERE, base::Bind(&SerialWorker::DoWorkJob, this), false)) { |
26 #if defined(OS_POSIX) | 27 #if defined(OS_POSIX) |
27 // See worker_pool_posix.cc. | 28 // See worker_pool_posix.cc. |
28 NOTREACHED() << "WorkerPool::PostTask is not expected to fail on posix"; | 29 NOTREACHED() << "WorkerPool::PostTask is not expected to fail on posix"; |
29 #else | 30 #else |
30 LOG(WARNING) << "Failed to WorkerPool::PostTask, will retry later"; | 31 LOG(WARNING) << "Failed to WorkerPool::PostTask, will retry later"; |
31 const int kWorkerPoolRetryDelayMs = 100; | 32 const int kWorkerPoolRetryDelayMs = 100; |
32 message_loop_->PostDelayedTask( | 33 message_loop_->PostDelayedTask( |
33 FROM_HERE, | 34 FROM_HERE, |
34 base::Bind(&SerialWorker::RetryWork, this), | 35 base::Bind(&SerialWorker::RetryWork, this), |
35 base::TimeDelta::FromMilliseconds(kWorkerPoolRetryDelayMs)); | 36 base::TimeDelta::FromMilliseconds(kWorkerPoolRetryDelayMs)); |
(...skipping 17 matching lines...) Expand all Loading... |
53 } | 54 } |
54 | 55 |
55 void SerialWorker::Cancel() { | 56 void SerialWorker::Cancel() { |
56 DCHECK(message_loop_->BelongsToCurrentThread()); | 57 DCHECK(message_loop_->BelongsToCurrentThread()); |
57 state_ = CANCELLED; | 58 state_ = CANCELLED; |
58 } | 59 } |
59 | 60 |
60 void SerialWorker::DoWorkJob() { | 61 void SerialWorker::DoWorkJob() { |
61 this->DoWork(); | 62 this->DoWork(); |
62 // If this fails, the loop is gone, so there is no point retrying. | 63 // If this fails, the loop is gone, so there is no point retrying. |
63 message_loop_->PostTask(FROM_HERE, base::Bind( | 64 message_loop_->PostTask(FROM_HERE, |
64 &SerialWorker::OnWorkJobFinished, this)); | 65 base::Bind(&SerialWorker::OnWorkJobFinished, this)); |
65 } | 66 } |
66 | 67 |
67 void SerialWorker::OnWorkJobFinished() { | 68 void SerialWorker::OnWorkJobFinished() { |
68 DCHECK(message_loop_->BelongsToCurrentThread()); | 69 DCHECK(message_loop_->BelongsToCurrentThread()); |
69 switch (state_) { | 70 switch (state_) { |
70 case CANCELLED: | 71 case CANCELLED: |
71 return; | 72 return; |
72 case WORKING: | 73 case WORKING: |
73 state_ = IDLE; | 74 state_ = IDLE; |
74 this->OnWorkFinished(); | 75 this->OnWorkFinished(); |
(...skipping 15 matching lines...) Expand all Loading... |
90 case WAITING: | 91 case WAITING: |
91 state_ = IDLE; | 92 state_ = IDLE; |
92 WorkNow(); | 93 WorkNow(); |
93 return; | 94 return; |
94 default: | 95 default: |
95 NOTREACHED() << "Unexpected state " << state_; | 96 NOTREACHED() << "Unexpected state " << state_; |
96 } | 97 } |
97 } | 98 } |
98 | 99 |
99 } // namespace net | 100 } // namespace net |
100 | |
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