| 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 "flutter/fml/message_loop.h" |
| 6 | |
| 7 | #include <utility> |
| 8 | |
| 9 | #include "flutter/fml/memory/ref_counted.h" |
| 10 | #include "flutter/fml/memory/ref_ptr.h" |
| 11 | #include "flutter/fml/message_loop_impl.h" |
| 12 | #include "flutter/fml/task_runner.h" |
| 13 | #include "flutter/fml/thread_local.h" |
| 14 | |
| 15 | namespace fml { |
| 16 | |
| 17 | FML_THREAD_LOCAL ThreadLocalUniquePtr<MessageLoop> tls_message_loop; |
| 18 | |
| 19 | MessageLoop& MessageLoop::GetCurrent() { |
| 20 | auto* loop = tls_message_loop.get(); |
| 21 | FML_CHECK(loop != nullptr) |
| 22 | << "MessageLoop::EnsureInitializedForCurrentThread was not called on " |
| 23 | "this thread prior to message loop use."; |
| 24 | return *loop; |
| 25 | } |
| 26 | |
| 27 | void MessageLoop::EnsureInitializedForCurrentThread() { |
| 28 | if (tls_message_loop.get() != nullptr) { |
| 29 | // Already initialized. |
| 30 | return; |
| 31 | } |
| 32 | tls_message_loop.reset(ptr: new MessageLoop()); |
| 33 | } |
| 34 | |
| 35 | bool MessageLoop::IsInitializedForCurrentThread() { |
| 36 | return tls_message_loop.get() != nullptr; |
| 37 | } |
| 38 | |
| 39 | MessageLoop::MessageLoop() |
| 40 | : loop_(MessageLoopImpl::Create()), |
| 41 | task_runner_(fml::MakeRefCounted<fml::TaskRunner>(args&: loop_)) { |
| 42 | FML_CHECK(loop_); |
| 43 | FML_CHECK(task_runner_); |
| 44 | } |
| 45 | |
| 46 | MessageLoop::~MessageLoop() = default; |
| 47 | |
| 48 | void MessageLoop::Run() { |
| 49 | loop_->DoRun(); |
| 50 | } |
| 51 | |
| 52 | void MessageLoop::Terminate() { |
| 53 | loop_->DoTerminate(); |
| 54 | } |
| 55 | |
| 56 | fml::RefPtr<fml::TaskRunner> MessageLoop::GetTaskRunner() const { |
| 57 | return task_runner_; |
| 58 | } |
| 59 | |
| 60 | fml::RefPtr<MessageLoopImpl> MessageLoop::GetLoopImpl() const { |
| 61 | return loop_; |
| 62 | } |
| 63 | |
| 64 | void MessageLoop::AddTaskObserver(intptr_t key, const fml::closure& callback) { |
| 65 | loop_->AddTaskObserver(key, callback); |
| 66 | } |
| 67 | |
| 68 | void MessageLoop::RemoveTaskObserver(intptr_t key) { |
| 69 | loop_->RemoveTaskObserver(key); |
| 70 | } |
| 71 | |
| 72 | void MessageLoop::RunExpiredTasksNow() { |
| 73 | loop_->RunExpiredTasksNow(); |
| 74 | } |
| 75 | |
| 76 | TaskQueueId MessageLoop::GetCurrentTaskQueueId() { |
| 77 | auto* loop = tls_message_loop.get(); |
| 78 | FML_CHECK(loop != nullptr) |
| 79 | << "MessageLoop::EnsureInitializedForCurrentThread was not called on " |
| 80 | "this thread prior to message loop use."; |
| 81 | return loop->GetLoopImpl()->GetTaskQueueId(); |
| 82 | } |
| 83 | |
| 84 | } // namespace fml |
| 85 |