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1691fa27d7
Just a cleanup, no functionality change is intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224227 91177308-0d34-0410-b5e6-96231b3b80d8
70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
//=== llvm/Support/Unix/ThreadLocal.inc - Unix Thread Local Data -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Unix specific (non-pthread) ThreadLocal class.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only generic UNIX code that
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//=== is guaranteed to work on *all* UNIX variants.
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//===----------------------------------------------------------------------===//
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#if defined(HAVE_PTHREAD_H) && defined(HAVE_PTHREAD_GETSPECIFIC)
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#include <cassert>
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#include <pthread.h>
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#include <stdlib.h>
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namespace llvm {
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using namespace sys;
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ThreadLocalImpl::ThreadLocalImpl() : data() {
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static_assert(sizeof(pthread_key_t) <= sizeof(data), "size too big");
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pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
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int errorcode = pthread_key_create(key, nullptr);
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assert(errorcode == 0);
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(void) errorcode;
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}
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ThreadLocalImpl::~ThreadLocalImpl() {
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pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
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int errorcode = pthread_key_delete(*key);
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assert(errorcode == 0);
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(void) errorcode;
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}
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void ThreadLocalImpl::setInstance(const void* d) {
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pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
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int errorcode = pthread_setspecific(*key, d);
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assert(errorcode == 0);
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(void) errorcode;
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}
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void *ThreadLocalImpl::getInstance() {
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pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
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return pthread_getspecific(*key);
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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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#else
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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) { data = const_cast<void*>(d);}
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void *ThreadLocalImpl::getInstance() { return data; }
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void ThreadLocalImpl::removeInstance() { setInstance(0); }
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}
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#endif
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