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 22 namespace llvm { 23 using namespace sys; 24 25 ThreadLocalImpl::ThreadLocalImpl() { 26 DWORD* tls = new DWORD; 27 *tls = TlsAlloc(); 28 assert(*tls != TLS_OUT_OF_INDEXES); 29 data = tls; 30 } 31 32 ThreadLocalImpl::~ThreadLocalImpl() { 33 DWORD* tls = static_cast<DWORD*>(data); 34 TlsFree(*tls); 35 delete tls; 36 } 37 38 const void* ThreadLocalImpl::getInstance() { 39 DWORD* tls = static_cast<DWORD*>(data); 40 return TlsGetValue(*tls); 41 } 42 43 void 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 50 void ThreadLocalImpl::removeInstance() { 51 setInstance(0); 52 } 53 54 } 55
