1 //= llvm/Support/Win32/ThreadLocal.inc - Win32 Thread Local Data -*- 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 file implements the Win32 specific (non-pthread) ThreadLocal class.
12 //===----------------------------------------------------------------------===//
14 //===----------------------------------------------------------------------===//
15 //=== WARNING: Implementation here must contain only generic Win32 code that
16 //=== is guaranteed to work on *all* Win32 variants.
17 //===----------------------------------------------------------------------===//
19 #include "WindowsSupport.h"
20 #include "llvm/Support/ThreadLocal.h"
24 sys::ThreadLocalImpl::ThreadLocalImpl() : data() {
25 static_assert(sizeof(DWORD) <= sizeof(data), "size too big");
26 DWORD* tls = reinterpret_cast<DWORD*>(&data);
28 assert(*tls != TLS_OUT_OF_INDEXES);
31 sys::ThreadLocalImpl::~ThreadLocalImpl() {
32 DWORD* tls = reinterpret_cast<DWORD*>(&data);
36 void *sys::ThreadLocalImpl::getInstance() {
37 DWORD* tls = reinterpret_cast<DWORD*>(&data);
38 return TlsGetValue(*tls);
41 void sys::ThreadLocalImpl::setInstance(const void* d){
42 DWORD* tls = reinterpret_cast<DWORD*>(&data);
43 int errorcode = TlsSetValue(*tls, const_cast<void*>(d));
44 assert(errorcode != 0);
48 void sys::ThreadLocalImpl::removeInstance() {