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1 //= llvm/Support/Unix/RWMutex.inc - Unix Reader/Writer Mutual Exclusion Lock  =//
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 Unix specific (non-pthread) RWMutex class.
11 //
12 //===----------------------------------------------------------------------===//
13
14 //===----------------------------------------------------------------------===//
15 //=== WARNING: Implementation here must contain only generic UNIX code that
16 //===          is guaranteed to work on *all* UNIX variants.
17 //===----------------------------------------------------------------------===//
18
19 namespace llvm {
20
21 using namespace sys;
22
23 RWMutexImpl::RWMutexImpl() { }
24
25 RWMutexImpl::~RWMutexImpl() { }
26
27 bool RWMutexImpl::reader_acquire() {
28   return true;
29 }
30
31 bool RWMutexImpl::reader_release() {
32   return true;
33 }
34
35 bool RWMutexImpl::writer_acquire() {
36   return true;
37 }
38
39 bool RWMutexImpl::writer_release() {
40   return true;
41 }
42
43 }