1218885Sdim//===- ThreadLocal.cpp - Thread Local Data ----------------------*- C++ -*-===// 2218885Sdim// 3218885Sdim// The LLVM Compiler Infrastructure 4218885Sdim// 5218885Sdim// This file is distributed under the University of Illinois Open Source 6218885Sdim// License. See LICENSE.TXT for details. 7218885Sdim// 8218885Sdim//===----------------------------------------------------------------------===// 9218885Sdim// 10218885Sdim// This file implements the llvm::sys::ThreadLocal class. 11218885Sdim// 12218885Sdim//===----------------------------------------------------------------------===// 13218885Sdim 14218885Sdim#include "llvm/Config/config.h" 15276479Sdim#include "llvm/Support/Compiler.h" 16218885Sdim#include "llvm/Support/ThreadLocal.h" 17218885Sdim 18218885Sdim//===----------------------------------------------------------------------===// 19218885Sdim//=== WARNING: Implementation here must contain only TRULY operating system 20218885Sdim//=== independent code. 21218885Sdim//===----------------------------------------------------------------------===// 22218885Sdim 23234353Sdim#if !defined(LLVM_ENABLE_THREADS) || LLVM_ENABLE_THREADS == 0 24218885Sdim// Define all methods as no-ops if threading is explicitly disabled 25218885Sdimnamespace llvm { 26218885Sdimusing namespace sys; 27261991SdimThreadLocalImpl::ThreadLocalImpl() : data() { } 28218885SdimThreadLocalImpl::~ThreadLocalImpl() { } 29239462Sdimvoid ThreadLocalImpl::setInstance(const void* d) { 30276479Sdim static_assert(sizeof(d) <= sizeof(data), "size too big"); 31239462Sdim void **pd = reinterpret_cast<void**>(&data); 32239462Sdim *pd = const_cast<void*>(d); 33218885Sdim} 34280031Sdimvoid *ThreadLocalImpl::getInstance() { 35239462Sdim void **pd = reinterpret_cast<void**>(&data); 36239462Sdim return *pd; 37239462Sdim} 38239462Sdimvoid ThreadLocalImpl::removeInstance() { 39276479Sdim setInstance(nullptr); 40218885Sdim} 41218885Sdim} 42218885Sdim#elif defined(LLVM_ON_UNIX) 43218885Sdim#include "Unix/ThreadLocal.inc" 44218885Sdim#elif defined( LLVM_ON_WIN32) 45218885Sdim#include "Windows/ThreadLocal.inc" 46218885Sdim#else 47226633Sdim#warning Neither LLVM_ON_UNIX nor LLVM_ON_WIN32 set in Support/ThreadLocal.cpp 48218885Sdim#endif 49