//===- ThreadLocal.cpp - Thread Local Data ----------------------*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file implements the llvm::sys::ThreadLocal class. // //===----------------------------------------------------------------------===// #include "llvm/Support/ThreadLocal.h" #include "llvm/Config/llvm-config.h" #include "llvm/Support/Compiler.h" //===----------------------------------------------------------------------===// //=== WARNING: Implementation here must contain only TRULY operating system //=== independent code. //===----------------------------------------------------------------------===// #if !defined(LLVM_ENABLE_THREADS) || LLVM_ENABLE_THREADS == 0 // Define all methods as no-ops if threading is explicitly disabled namespace llvm { using namespace sys; ThreadLocalImpl::ThreadLocalImpl() : data() { } ThreadLocalImpl::~ThreadLocalImpl() { } void ThreadLocalImpl::setInstance(const void* d) { static_assert(sizeof(d) <= sizeof(data), "size too big"); void **pd = reinterpret_cast<void**>(&data); *pd = const_cast<void*>(d); } void *ThreadLocalImpl::getInstance() { void **pd = reinterpret_cast<void**>(&data); return *pd; } void ThreadLocalImpl::removeInstance() { setInstance(nullptr); } } #elif defined(LLVM_ON_UNIX) #include "Unix/ThreadLocal.inc" #elif defined( _WIN32) #include "Windows/ThreadLocal.inc" #else #warning Neither LLVM_ON_UNIX nor _WIN32 set in Support/ThreadLocal.cpp #endif |