// Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors // Licensed under the MIT License: // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. #pragma once #include "common.h" #include "function.h" #include "exception.h" KJ_BEGIN_HEADER namespace kj { class Thread { // A thread! Pass a lambda to the constructor, and it runs in the thread. The destructor joins // the thread. If the function throws an exception, it is rethrown from the thread's destructor // (if not unwinding from another exception). public: explicit Thread(Function<void()> func); KJ_DISALLOW_COPY(Thread); ~Thread() noexcept(false); #if !_WIN32 void sendSignal(int signo); // Send a Unix signal to the given thread, using pthread_kill or an equivalent. #endif void detach(); // Don't join the thread in ~Thread(). private: struct ThreadState { ThreadState(Function<void()> func); Function<void()> func; Function<void(Function<void()>)> initializer; kj::Maybe<kj::Exception> exception; unsigned int refcount; // Owned by the parent thread and the child thread. void unref(); }; ThreadState* state; #if _WIN32 void* threadHandle; #else unsigned long long threadId; // actually pthread_t #endif bool detached = false; #if _WIN32 static unsigned long __stdcall runThread(void* ptr); #else static void* runThread(void* ptr); #endif }; } // namespace kj KJ_END_HEADER