LLVM  6.0.0svn
ThreadLocal.inc
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1 //= llvm/Support/Win32/ThreadLocal.inc - Win32 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 Win32 specific (non-pthread) ThreadLocal class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 //===----------------------------------------------------------------------===//
15 //=== WARNING: Implementation here must contain only generic Win32 code that
16 //=== is guaranteed to work on *all* Win32 variants.
17 //===----------------------------------------------------------------------===//
18 
19 #include "WindowsSupport.h"
21 
22 namespace llvm {
23 
25  static_assert(sizeof(DWORD) <= sizeof(data), "size too big");
26  DWORD* tls = reinterpret_cast<DWORD*>(&data);
27  *tls = TlsAlloc();
28  assert(*tls != TLS_OUT_OF_INDEXES);
29 }
30 
32  DWORD* tls = reinterpret_cast<DWORD*>(&data);
33  TlsFree(*tls);
34 }
35 
37  DWORD* tls = reinterpret_cast<DWORD*>(&data);
38  return TlsGetValue(*tls);
39 }
40 
41 void sys::ThreadLocalImpl::setInstance(const void* d){
42  DWORD* tls = reinterpret_cast<DWORD*>(&data);
43  int errorcode = TlsSetValue(*tls, const_cast<void*>(d));
44  assert(errorcode != 0);
45  (void)errorcode;
46 }
47 
49  setInstance(0);
50 }
51 
52 }
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
void setInstance(const void *d)
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())