llvm-6502/lib/Support/Unix/ThreadLocal.inc
David Majnemer 1691fa27d7 ThreadLocal: Move Unix-specific code out of Support/ThreadLocal.cpp
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
2014-12-15 01:19:53 +00:00

70 lines
2.2 KiB
C++

//=== llvm/Support/Unix/ThreadLocal.inc - Unix Thread Local Data -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Unix specific (non-pthread) ThreadLocal class.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only generic UNIX code that
//=== is guaranteed to work on *all* UNIX variants.
//===----------------------------------------------------------------------===//
#if defined(HAVE_PTHREAD_H) && defined(HAVE_PTHREAD_GETSPECIFIC)
#include <cassert>
#include <pthread.h>
#include <stdlib.h>
namespace llvm {
using namespace sys;
ThreadLocalImpl::ThreadLocalImpl() : data() {
static_assert(sizeof(pthread_key_t) <= sizeof(data), "size too big");
pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
int errorcode = pthread_key_create(key, nullptr);
assert(errorcode == 0);
(void) errorcode;
}
ThreadLocalImpl::~ThreadLocalImpl() {
pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
int errorcode = pthread_key_delete(*key);
assert(errorcode == 0);
(void) errorcode;
}
void ThreadLocalImpl::setInstance(const void* d) {
pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
int errorcode = pthread_setspecific(*key, d);
assert(errorcode == 0);
(void) errorcode;
}
void *ThreadLocalImpl::getInstance() {
pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
return pthread_getspecific(*key);
}
void ThreadLocalImpl::removeInstance() {
setInstance(nullptr);
}
}
#else
namespace llvm {
using namespace sys;
ThreadLocalImpl::ThreadLocalImpl() : data() { }
ThreadLocalImpl::~ThreadLocalImpl() { }
void ThreadLocalImpl::setInstance(const void* d) { data = const_cast<void*>(d);}
void *ThreadLocalImpl::getInstance() { return data; }
void ThreadLocalImpl::removeInstance() { setInstance(0); }
}
#endif