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48 lines
1.7 KiB
48 lines
1.7 KiB
4 months ago
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//===- ThreadLocal.cpp - Thread Local Data ----------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the llvm::sys::ThreadLocal class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/ThreadLocal.h"
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#include "llvm/Config/llvm-config.h"
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#include "llvm/Support/Compiler.h"
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only TRULY operating system
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//=== independent code.
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//===----------------------------------------------------------------------===//
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#if !defined(LLVM_ENABLE_THREADS) || LLVM_ENABLE_THREADS == 0
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// Define all methods as no-ops if threading is explicitly disabled
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namespace llvm {
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using namespace sys;
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ThreadLocalImpl::ThreadLocalImpl() : data() { }
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ThreadLocalImpl::~ThreadLocalImpl() { }
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void ThreadLocalImpl::setInstance(const void* d) {
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static_assert(sizeof(d) <= sizeof(data), "size too big");
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void **pd = reinterpret_cast<void**>(&data);
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*pd = const_cast<void*>(d);
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}
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void *ThreadLocalImpl::getInstance() {
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void **pd = reinterpret_cast<void**>(&data);
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return *pd;
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}
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void ThreadLocalImpl::removeInstance() {
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setInstance(nullptr);
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}
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}
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#elif defined(LLVM_ON_UNIX)
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#include "Unix/ThreadLocal.inc"
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#elif defined( _WIN32)
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#include "Windows/ThreadLocal.inc"
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#else
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#warning Neither LLVM_ON_UNIX nor _WIN32 set in Support/ThreadLocal.cpp
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#endif
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