1//= llvm/Support/Win32/ThreadLocal.inc - Win32 Thread Local Data -*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the Win32 specific (non-pthread) ThreadLocal class.
11//
12//===----------------------------------------------------------------------===//
13
14//===----------------------------------------------------------------------===//
15//=== WARNING: Implementation here must contain only generic Win32 code that
16//===          is guaranteed to work on *all* Win32 variants.
17//===----------------------------------------------------------------------===//
18
19#include "Windows.h"
20#include "llvm/Support/ThreadLocal.h"
21
22namespace llvm {
23using namespace sys;
24
25ThreadLocalImpl::ThreadLocalImpl() {
26  DWORD* tls = new DWORD;
27  *tls = TlsAlloc();
28  assert(*tls != TLS_OUT_OF_INDEXES);
29  data = tls;
30}
31
32ThreadLocalImpl::~ThreadLocalImpl() {
33  DWORD* tls = static_cast<DWORD*>(data);
34  TlsFree(*tls);
35  delete tls;
36}
37
38const void* ThreadLocalImpl::getInstance() {
39  DWORD* tls = static_cast<DWORD*>(data);
40  return TlsGetValue(*tls);
41}
42
43void ThreadLocalImpl::setInstance(const void* d){
44  DWORD* tls = static_cast<DWORD*>(data);
45  int errorcode = TlsSetValue(*tls, const_cast<void*>(d));
46  assert(errorcode != 0);
47  (void)errorcode;
48}
49
50void ThreadLocalImpl::removeInstance() {
51  setInstance(0);
52}
53
54}
55