Index: base/worker_pool_job.cc |
diff --git a/base/worker_pool_job.cc b/base/worker_pool_job.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..51af53c637466501684603fe771d6c75c074ed82 |
--- /dev/null |
+++ b/base/worker_pool_job.cc |
@@ -0,0 +1,72 @@ |
+// Copyright (c) 2010 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "base/worker_pool_job.h" |
+ |
+#include "base/logging.h" |
+#include "base/message_loop_proxy.h" |
+#include "base/worker_pool.h" |
+ |
+namespace base { |
+ |
+WorkerPoolJob::WorkerPoolJob() |
+ : origin_loop_(base::MessageLoopProxy::CreateForCurrentThread()), |
+ canceled_(false), |
+ state_(NONE) {} |
+ |
+WorkerPoolJob::~WorkerPoolJob() {} |
+ |
+void WorkerPoolJob::StartJob() { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ DCHECK_EQ(state_, NONE); |
eroman
2011/01/05 01:24:52
Can the state DCHECK be more restrictive?
i.e, I
|
+ state_ = RUNNING; |
+ bool posted = WorkerPool::PostTask( |
+ FROM_HERE, |
+ NewRunnableMethod(this, &WorkerPoolJob::RunJobOnWorkerPool), |
+ true /* is_slow */); |
+ DCHECK(posted); |
+} |
+ |
+void WorkerPoolJob::CancelJob() { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ DCHECK_NE(state_, NONE); |
+ DCHECK_NE(state_, DONE); |
eroman
2011/01/05 01:24:52
Can these two checks be combined into:
DCHECK_EQ(R
|
+ DCHECK(!canceled_); |
+ canceled_ = true; |
+} |
+ |
+bool WorkerPoolJob::canceled() const { |
+ // No thread check since RunJob() implementations may check to see if they've |
+ // been canceled so they can bail out early. |
eroman
2011/01/05 01:24:52
I don't think this comment is true anymore.
|
+ DCHECK_NE(state_, NONE); |
+ return canceled_; |
+} |
+ |
+void WorkerPoolJob::RunJobOnWorkerPool() { |
+ DCHECK(!thread_checker_.CalledOnValidThread()); |
+ |
+ RunJob(); |
+ |
+ origin_loop_->PostTask( |
+ FROM_HERE, |
+ NewRunnableMethod(this, &WorkerPoolJob::CompleteJobOnOriginLoop)); |
+} |
+ |
+void WorkerPoolJob::CompleteJobOnOriginLoop() { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ DCHECK_NE(state_, NONE); |
eroman
2011/01/05 01:24:52
Can these two statnments be combined into:
DCHECK
|
+ DCHECK_NE(state_, DONE); |
+ |
+ // No need to lock, since writes only happen on origin loop. |
+ if (canceled_) { |
+ state_ = DONE; |
+ return; |
+ } |
+ |
+ OnJobCompleted(); |
+ |
+ state_ = DONE; |
eroman
2011/01/05 01:24:52
nit: I wander if you want to set state_ to DONE be
|
+} |
+ |
+} // namespace base |