|  | //= llvm/Support/Unix/RWMutex.inc - Unix Reader/Writer Mutual Exclusion Lock  =// | 
|  | // | 
|  | //                     The LLVM Compiler Infrastructure | 
|  | // | 
|  | // This file is distributed under the University of Illinois Open Source | 
|  | // License. See LICENSE.TXT for details. | 
|  | // | 
|  | //===----------------------------------------------------------------------===// | 
|  | // | 
|  | // This file implements the Unix specific (non-pthread) RWMutex class. | 
|  | // | 
|  | //===----------------------------------------------------------------------===// | 
|  |  | 
|  | //===----------------------------------------------------------------------===// | 
|  | //=== WARNING: Implementation here must contain only generic UNIX code that | 
|  | //===          is guaranteed to work on *all* UNIX variants. | 
|  | //===----------------------------------------------------------------------===// | 
|  |  | 
|  | namespace llvm { | 
|  |  | 
|  | using namespace sys; | 
|  |  | 
|  | RWMutexImpl::RWMutexImpl() { } | 
|  |  | 
|  | RWMutexImpl::~RWMutexImpl() { } | 
|  |  | 
|  | bool RWMutexImpl::reader_acquire() { | 
|  | return true; | 
|  | } | 
|  |  | 
|  | bool RWMutexImpl::reader_release() { | 
|  | return true; | 
|  | } | 
|  |  | 
|  | bool RWMutexImpl::writer_acquire() { | 
|  | return true; | 
|  | } | 
|  |  | 
|  | bool RWMutexImpl::writer_release() { | 
|  | return true; | 
|  | } | 
|  |  | 
|  | } |