Index: base/task_scheduler/task_scheduler.h |
diff --git a/base/task_scheduler/task_scheduler.h b/base/task_scheduler/task_scheduler.h |
index fe3d5e53ee919fe4ebfedbd1b10ef06ad6c3283b..385edd77a8bbf4df73a043753c624d19d1c0afb1 100644 |
--- a/base/task_scheduler/task_scheduler.h |
+++ b/base/task_scheduler/task_scheduler.h |
@@ -11,6 +11,8 @@ |
#include "base/base_export.h" |
#include "base/callback_forward.h" |
#include "base/memory/ref_counted.h" |
+#include "base/sequenced_task_runner.h" |
+#include "base/single_thread_task_runner.h" |
#include "base/task_runner.h" |
#include "base/task_scheduler/task_traits.h" |
@@ -43,11 +45,21 @@ class BASE_EXPORT TaskScheduler { |
const TaskTraits& traits, |
const Closure& task) = 0; |
- // Returns a TaskRunner whose PostTask invocations will result in scheduling |
- // Tasks with |traits| which will be executed according to |execution_mode|. |
+ // Returns a TaskRunner whose PostTask invocations result in scheduling tasks |
+ // using |traits|. Tasks may run in any order and in parallel. |
virtual scoped_refptr<TaskRunner> CreateTaskRunnerWithTraits( |
- const TaskTraits& traits, |
- ExecutionMode execution_mode) = 0; |
+ const TaskTraits& traits) = 0; |
+ |
+ // Returns a SequencedTaskRunner whose PostTask invocations result in |
+ // scheduling tasks using |traits|. Tasks run one at a time in posting order. |
+ virtual scoped_refptr<SequencedTaskRunner> |
+ CreateSequencedTaskRunnerWithTraits(const TaskTraits& traits) = 0; |
+ |
+ // Returns a SingleThreadTaskRunner whose PostTask invocations result in |
+ // scheduling tasks using |traits|. Tasks run on a single thread in posting |
+ // order. |
+ virtual scoped_refptr<SingleThreadTaskRunner> |
+ CreateSingleThreadTaskRunnerWithTraits(const TaskTraits& traits) = 0; |
// Returns a vector of all histograms available in this task scheduler. |
virtual std::vector<const HistogramBase*> GetHistograms() const = 0; |