1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "task_runner_adapter.h"
6
7 #include <lib/async/cpp/task.h>
8 #include <lib/async/default.h>
9 #include <lib/zx/time.h>
10
11 #include "flutter/fml/message_loop_impl.h"
12
13 namespace flutter_runner {
14
15 class CompatTaskRunner : public fml::TaskRunner {
16 public:
CompatTaskRunner(async_dispatcher_t * dispatcher)17 CompatTaskRunner(async_dispatcher_t* dispatcher)
18 : fml::TaskRunner(nullptr), forwarding_target_(dispatcher) {
19 FML_DCHECK(forwarding_target_);
20 }
21
PostTask(fml::closure task)22 void PostTask(fml::closure task) override {
23 async::PostTask(forwarding_target_, std::move(task));
24 }
25
PostTaskForTime(fml::closure task,fml::TimePoint target_time)26 void PostTaskForTime(fml::closure task, fml::TimePoint target_time) override {
27 async::PostTaskForTime(
28 forwarding_target_, std::move(task),
29 zx::time(target_time.ToEpochDelta().ToNanoseconds()));
30 }
31
PostDelayedTask(fml::closure task,fml::TimeDelta delay)32 void PostDelayedTask(fml::closure task, fml::TimeDelta delay) override {
33 async::PostDelayedTask(forwarding_target_, std::move(task),
34 zx::duration(delay.ToNanoseconds()));
35 }
36
RunsTasksOnCurrentThread()37 bool RunsTasksOnCurrentThread() override {
38 return forwarding_target_ == async_get_default_dispatcher();
39 }
40
41 private:
42 async_dispatcher_t* forwarding_target_;
43
44 FML_DISALLOW_COPY_AND_ASSIGN(CompatTaskRunner);
45 FML_FRIEND_MAKE_REF_COUNTED(CompatTaskRunner);
46 FML_FRIEND_REF_COUNTED_THREAD_SAFE(CompatTaskRunner);
47 };
48
CreateFMLTaskRunner(async_dispatcher_t * dispatcher)49 fml::RefPtr<fml::TaskRunner> CreateFMLTaskRunner(
50 async_dispatcher_t* dispatcher) {
51 return fml::MakeRefCounted<CompatTaskRunner>(dispatcher);
52 }
53
54 } // namespace flutter_runner
55