| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| #ifndef MainThread_h |
| #define MainThread_h |
| |
| #include <functional> |
| #include <stdint.h> |
| #include <wtf/Function.h> |
| #include <wtf/Optional.h> |
| |
| namespace WTF { |
| |
| class PrintStream; |
| |
| typedef uint32_t ThreadIdentifier; |
| |
| // Must be called from the main thread. |
| WTF_EXPORT_PRIVATE void initializeMainThread(); |
| |
| WTF_EXPORT_PRIVATE void callOnMainThread(Function<void ()>&&); |
| |
| #if PLATFORM(COCOA) |
| WTF_EXPORT_PRIVATE void callOnWebThreadOrDispatchAsyncOnMainThread(void (^block)()); |
| #endif |
| |
| WTF_EXPORT_PRIVATE void setMainThreadCallbacksPaused(bool paused); |
| |
| WTF_EXPORT_PRIVATE bool isMainThread(); |
| |
| WTF_EXPORT_PRIVATE bool canAccessThreadLocalDataForThread(ThreadIdentifier); |
| |
| #if USE(WEB_THREAD) |
| WTF_EXPORT_PRIVATE bool isWebThread(); |
| WTF_EXPORT_PRIVATE bool isUIThread(); |
| WTF_EXPORT_PRIVATE void initializeWebThread(); |
| WTF_EXPORT_PRIVATE void initializeApplicationUIThreadIdentifier(); |
| WTF_EXPORT_PRIVATE void initializeWebThreadIdentifier(); |
| void initializeWebThreadPlatform(); |
| #else |
| inline bool isWebThread() { return isMainThread(); } |
| inline bool isUIThread() { return isMainThread(); } |
| #endif // USE(WEB_THREAD) |
| |
| WTF_EXPORT_PRIVATE void initializeGCThreads(); |
| |
| enum class GCThreadType { |
| Main, |
| Helper |
| }; |
| |
| void printInternal(PrintStream&, GCThreadType); |
| |
| WTF_EXPORT_PRIVATE void registerGCThread(GCThreadType); |
| WTF_EXPORT_PRIVATE std::optional<GCThreadType> mayBeGCThread(); |
| WTF_EXPORT_PRIVATE bool isMainThreadOrGCThread(); |
| |
| // NOTE: these functions are internal to the callOnMainThread implementation. |
| void initializeMainThreadPlatform(); |
| void scheduleDispatchFunctionsOnMainThread(); |
| void dispatchFunctionsFromMainThread(); |
| |
| #if OS(DARWIN) && !PLATFORM(GTK) |
| #if !USE(WEB_THREAD) |
| // This version of initializeMainThread sets up the main thread as corresponding |
| // to the process's main thread, and not necessarily the thread that calls this |
| // function. It should only be used as a legacy aid for Mac WebKit. |
| WTF_EXPORT_PRIVATE void initializeMainThreadToProcessMainThread(); |
| #endif // !USE(WEB_THREAD) |
| void initializeMainThreadToProcessMainThreadPlatform(); |
| #endif |
| |
| } // namespace WTF |
| |
| using WTF::GCThreadType; |
| using WTF::callOnMainThread; |
| using WTF::canAccessThreadLocalDataForThread; |
| using WTF::isMainThread; |
| using WTF::isMainThreadOrGCThread; |
| using WTF::isUIThread; |
| using WTF::isWebThread; |
| using WTF::mayBeGCThread; |
| using WTF::setMainThreadCallbacksPaused; |
| #if PLATFORM(COCOA) |
| using WTF::callOnWebThreadOrDispatchAsyncOnMainThread; |
| #endif |
| #if USE(WEB_THREAD) |
| using WTF::initializeWebThread; |
| using WTF::initializeApplicationUIThreadIdentifier; |
| using WTF::initializeWebThreadIdentifier; |
| #endif |
| |
| #endif // MainThread_h |