LLVM  6.0.0svn
ThreadLocal.cpp
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1 //===- ThreadLocal.cpp - Thread Local Data ----------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the llvm::sys::ThreadLocal class.
11 //
12 //===----------------------------------------------------------------------===//
13 
15 #include "llvm/Config/config.h"
16 #include "llvm/Support/Compiler.h"
17 
18 //===----------------------------------------------------------------------===//
19 //=== WARNING: Implementation here must contain only TRULY operating system
20 //=== independent code.
21 //===----------------------------------------------------------------------===//
22 
23 #if !defined(LLVM_ENABLE_THREADS) || LLVM_ENABLE_THREADS == 0
24 // Define all methods as no-ops if threading is explicitly disabled
25 namespace llvm {
26 using namespace sys;
29 void ThreadLocalImpl::setInstance(const void* d) {
30  static_assert(sizeof(d) <= sizeof(data), "size too big");
31  void **pd = reinterpret_cast<void**>(&data);
32  *pd = const_cast<void*>(d);
33 }
35  void **pd = reinterpret_cast<void**>(&data);
36  return *pd;
37 }
39  setInstance(nullptr);
40 }
41 }
42 #elif defined(LLVM_ON_UNIX)
43 #include "Unix/ThreadLocal.inc"
44 #elif defined( LLVM_ON_WIN32)
45 #include "Windows/ThreadLocal.inc"
46 #else
47 #warning Neither LLVM_ON_UNIX nor LLVM_ON_WIN32 set in Support/ThreadLocal.cpp
48 #endif
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
char data[sizeof(ThreadLocalDataTy)]
Definition: ThreadLocal.h:32
void setInstance(const void *d)