| //= llvm/Support/Win32/ThreadLocal.inc - Win32 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 Win32 specific (non-pthread) ThreadLocal class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| //===----------------------------------------------------------------------===// |
| //=== WARNING: Implementation here must contain only generic Win32 code that |
| //=== is guaranteed to work on *all* Win32 variants. |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Support/Windows/WindowsSupport.h" |
| #include "llvm/Support/ThreadLocal.h" |
| |
| namespace llvm { |
| |
| sys::ThreadLocalImpl::ThreadLocalImpl() : data() { |
| static_assert(sizeof(DWORD) <= sizeof(data), "size too big"); |
| DWORD* tls = reinterpret_cast<DWORD*>(&data); |
| *tls = TlsAlloc(); |
| assert(*tls != TLS_OUT_OF_INDEXES); |
| } |
| |
| sys::ThreadLocalImpl::~ThreadLocalImpl() { |
| DWORD* tls = reinterpret_cast<DWORD*>(&data); |
| TlsFree(*tls); |
| } |
| |
| void *sys::ThreadLocalImpl::getInstance() { |
| DWORD* tls = reinterpret_cast<DWORD*>(&data); |
| return TlsGetValue(*tls); |
| } |
| |
| void sys::ThreadLocalImpl::setInstance(const void* d){ |
| DWORD* tls = reinterpret_cast<DWORD*>(&data); |
| int errorcode = TlsSetValue(*tls, const_cast<void*>(d)); |
| assert(errorcode != 0); |
| (void)errorcode; |
| } |
| |
| void sys::ThreadLocalImpl::removeInstance() { |
| setInstance(0); |
| } |
| |
| } |