1 //===-- llvm/Support/thread.h - Wrapper for <thread> ------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This header is a wrapper for <thread> that works around problems with the
11 // MSVC headers when exceptions are disabled. It also provides llvm::thread,
12 // which is either a typedef of std::thread or a replacement that calls the
13 // function synchronously depending on the value of LLVM_ENABLE_THREADS.
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_SUPPORT_THREAD_H
18 #define LLVM_SUPPORT_THREAD_H
20 #include "llvm/Config/llvm-config.h"
22 #if LLVM_ENABLE_THREADS
27 typedef std::thread thread;
30 #else // !LLVM_ENABLE_THREADS
38 thread(thread &&other) {}
39 template <class Function, class... Args>
40 explicit thread(Function &&f, Args &&... args) {
41 f(std::forward<Args>(args)...);
43 thread(const thread &) = delete;
46 static unsigned hardware_concurrency() { return 1; };
51 #endif // LLVM_ENABLE_THREADS