add a new MachineModuleInfoMachO class, which is the per-module
[llvm/avr.git] / lib / System / Unix / RWMutex.inc
blobe83d41ef4cfeb3a6dac649bada5350975ade73eb
1 //= llvm/System/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.
12 //===----------------------------------------------------------------------===//
14 //===----------------------------------------------------------------------===//
15 //=== WARNING: Implementation here must contain only generic UNIX code that
16 //===          is guaranteed to work on *all* UNIX variants.
17 //===----------------------------------------------------------------------===//
19 namespace llvm {
21 using namespace sys;
23 RWMutexImpl::RWMutexImpl() { }
25 RWMutexImpl::~RWMutexImpl() { }
27 bool RWMutexImpl::reader_acquire() {
28   return true;
31 bool RWMutexImpl::reader_release() {
32   return true;
35 bool RWMutexImpl::writer_acquire() {
36   return true;
39 bool RWMutexImpl::writer_release() {
40   return true;