f785676f2a
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
//===- ThreadLocal.cpp - 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 llvm::sys::ThreadLocal class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Config/config.h"
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#include "llvm/Support/ThreadLocal.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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typedef int SIZE_TOO_BIG[sizeof(d) <= sizeof(data) ? 1 : -1];
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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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const 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(0);
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}
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}
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#else
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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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typedef int SIZE_TOO_BIG[sizeof(pthread_key_t) <= sizeof(data) ? 1 : -1];
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pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
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int errorcode = pthread_key_create(key, NULL);
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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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const 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(0);
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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( LLVM_ON_WIN32)
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#include "Windows/ThreadLocal.inc"
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#else
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#warning Neither LLVM_ON_UNIX nor LLVM_ON_WIN32 set in Support/ThreadLocal.cpp
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#endif
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#endif
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