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author | kaiwang@chromium.org <kaiwang@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-11-16 04:36:34 +0000 |
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committer | kaiwang@chromium.org <kaiwang@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-11-16 04:36:34 +0000 |
commit | edce70216d642db3b5433c540b2cbef93a183430 (patch) | |
tree | 2fd601b1a31a1ab8f32757e666f5e691a5486ee5 /chrome/common/cancelable_task_tracker.cc | |
parent | bab616bf4343e85877b951c8c96ad58196d23898 (diff) | |
download | chromium_src-edce70216d642db3b5433c540b2cbef93a183430.zip chromium_src-edce70216d642db3b5433c540b2cbef93a183430.tar.gz chromium_src-edce70216d642db3b5433c540b2cbef93a183430.tar.bz2 |
Add function to CancelableTaskTracker and convert BootTimeLoader
BUG=155883
Review URL: https://chromiumcodereview.appspot.com/11410073
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@168134 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'chrome/common/cancelable_task_tracker.cc')
-rw-r--r-- | chrome/common/cancelable_task_tracker.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/chrome/common/cancelable_task_tracker.cc b/chrome/common/cancelable_task_tracker.cc index 3570e05..28ee436 100644 --- a/chrome/common/cancelable_task_tracker.cc +++ b/chrome/common/cancelable_task_tracker.cc @@ -8,6 +8,7 @@ #include "base/bind.h" #include "base/bind_helpers.h" +#include "base/location.h" #include "base/memory/ref_counted.h" #include "base/message_loop_proxy.h" #include "base/synchronization/cancellation_flag.h" @@ -33,6 +34,18 @@ void RunIfNotCanceledThenUntrack(const CancellationFlag* flag, untrack.Run(); } +bool IsCanceled(const CancellationFlag* flag, + base::ScopedClosureRunner* untrack_runner) { + return flag->IsSet(); +} + +void RunOrPostToTaskRunner(TaskRunner* task_runner, const Closure& closure) { + if (task_runner->RunsTasksOnCurrentThread()) + closure.Run(); + else + task_runner->PostTask(FROM_HERE, closure); +} + } // namespace // static @@ -84,6 +97,29 @@ CancelableTaskTracker::TaskId CancelableTaskTracker::PostTaskAndReply( return id; } +CancelableTaskTracker::TaskId CancelableTaskTracker::NewTrackedTaskId( + IsCanceledCallback* is_canceled_cb) { + DCHECK(thread_checker_.CalledOnValidThread()); + DCHECK(base::MessageLoopProxy::current()); + + TaskId id = next_id_; + next_id_++; // int64 is big enough that we ignore the potential overflow. + + // Both owned by |is_canceled_cb|. + CancellationFlag* flag = new CancellationFlag(); + base::ScopedClosureRunner* untrack_runner = new base::ScopedClosureRunner( + Bind(&RunOrPostToTaskRunner, + base::MessageLoopProxy::current(), + Bind(&CancelableTaskTracker::Untrack, + weak_factory_.GetWeakPtr(), id))); + + *is_canceled_cb = Bind(&IsCanceled, + base::Owned(flag), + base::Owned(untrack_runner)); + Track(id, flag); + return id; +} + void CancelableTaskTracker::TryCancel(TaskId id) { DCHECK(thread_checker_.CalledOnValidThread()); |