1 // Copyright 2011 The Chromium 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 "cc/trees/proxy.h" 6 7 #include "base/message_loop/message_loop_proxy.h" 8 #include "base/single_thread_task_runner.h" 9 #include "cc/trees/blocking_task_runner.h" 10 11 namespace cc { 12 13 base::SingleThreadTaskRunner* Proxy::MainThreadTaskRunner() const { 14 return main_task_runner_.get(); 15 } 16 17 bool Proxy::HasImplThread() const { return !!impl_task_runner_.get(); } 18 19 base::SingleThreadTaskRunner* Proxy::ImplThreadTaskRunner() const { 20 return impl_task_runner_.get(); 21 } 22 23 bool Proxy::IsMainThread() const { 24 #if DCHECK_IS_ON 25 if (impl_thread_is_overridden_) 26 return false; 27 28 bool is_main_thread = base::PlatformThread::CurrentId() == main_thread_id_; 29 if (is_main_thread && main_task_runner_.get()) { 30 DCHECK(main_task_runner_->BelongsToCurrentThread()); 31 } 32 return is_main_thread; 33 #else 34 return true; 35 #endif 36 } 37 38 bool Proxy::IsImplThread() const { 39 #if DCHECK_IS_ON 40 if (impl_thread_is_overridden_) 41 return true; 42 if (!impl_task_runner_.get()) 43 return false; 44 return impl_task_runner_->BelongsToCurrentThread(); 45 #else 46 return true; 47 #endif 48 } 49 50 #if DCHECK_IS_ON 51 void Proxy::SetCurrentThreadIsImplThread(bool is_impl_thread) { 52 impl_thread_is_overridden_ = is_impl_thread; 53 } 54 #endif 55 56 bool Proxy::IsMainThreadBlocked() const { 57 #if DCHECK_IS_ON 58 return is_main_thread_blocked_; 59 #else 60 return true; 61 #endif 62 } 63 64 #if DCHECK_IS_ON 65 void Proxy::SetMainThreadBlocked(bool is_main_thread_blocked) { 66 is_main_thread_blocked_ = is_main_thread_blocked; 67 } 68 #endif 69 70 Proxy::Proxy(scoped_refptr<base::SingleThreadTaskRunner> main_task_runner, 71 scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner) 72 #if !DCHECK_IS_ON 73 : main_task_runner_(main_task_runner), 74 impl_task_runner_(impl_task_runner), 75 blocking_main_thread_task_runner_( 76 BlockingTaskRunner::Create(main_task_runner)) { 77 #else 78 : main_task_runner_(main_task_runner), 79 impl_task_runner_(impl_task_runner), 80 blocking_main_thread_task_runner_( 81 BlockingTaskRunner::Create(main_task_runner)), 82 main_thread_id_(base::PlatformThread::CurrentId()), 83 impl_thread_is_overridden_(false), 84 is_main_thread_blocked_(false) { 85 #endif 86 } 87 88 Proxy::~Proxy() { 89 DCHECK(IsMainThread()); 90 } 91 92 } // namespace cc 93