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Diffstat (limited to 'include/llvm/Support/thread.h')
-rw-r--r-- | include/llvm/Support/thread.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/llvm/Support/thread.h b/include/llvm/Support/thread.h new file mode 100644 index 000000000000..2d130418a57f --- /dev/null +++ b/include/llvm/Support/thread.h @@ -0,0 +1,66 @@ +//===-- llvm/Support/thread.h - Wrapper for <thread> ------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This header is a wrapper for <thread> that works around problems with the +// MSVC headers when exceptions are disabled. It also provides llvm::thread, +// which is either a typedef of std::thread or a replacement that calls the +// function synchronously depending on the value of LLVM_ENABLE_THREADS. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_SUPPORT_THREAD_H +#define LLVM_SUPPORT_THREAD_H + +#include "llvm/Config/llvm-config.h" + +#if LLVM_ENABLE_THREADS + +#ifdef _MSC_VER +// concrt.h depends on eh.h for __uncaught_exception declaration +// even if we disable exceptions. +#include <eh.h> + +// Suppress 'C++ exception handler used, but unwind semantics are not enabled.' +#pragma warning(push) +#pragma warning(disable:4530) +#endif + +#include <thread> + +#ifdef _MSC_VER +#pragma warning(pop) +#endif + +namespace llvm { +typedef std::thread thread; +} + +#else // !LLVM_ENABLE_THREADS + +#include <utility> + +namespace llvm { + +struct thread { + thread() {} + thread(thread &&other) {} + template <class Function, class... Args> + explicit thread(Function &&f, Args &&... args) { + f(std::forward<Args>(args)...); + } + thread(const thread &) = delete; + + void join() {} +}; + +} + +#endif // LLVM_ENABLE_THREADS + +#endif |