Owen Anderson | 0c2185a | 2009-06-16 20:19:28 +0000 | [diff] [blame] | 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. |
| 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 | |
Owen Anderson | 1c613d7 | 2009-06-18 18:26:15 +0000 | [diff] [blame] | 23 | RWMutexImpl::RWMutexImpl() { } |
Owen Anderson | 0c2185a | 2009-06-16 20:19:28 +0000 | [diff] [blame] | 24 | |
Owen Anderson | 1c613d7 | 2009-06-18 18:26:15 +0000 | [diff] [blame] | 25 | RWMutexImpl::~RWMutexImpl() { } |
Owen Anderson | 0c2185a | 2009-06-16 20:19:28 +0000 | [diff] [blame] | 26 | |
Owen Anderson | 1c613d7 | 2009-06-18 18:26:15 +0000 | [diff] [blame] | 27 | bool RWMutexImpl::reader_acquire() { |
Owen Anderson | 0c2185a | 2009-06-16 20:19:28 +0000 | [diff] [blame] | 28 | return true; |
| 29 | } |
| 30 | |
Owen Anderson | 1c613d7 | 2009-06-18 18:26:15 +0000 | [diff] [blame] | 31 | bool RWMutexImpl::reader_release() { |
Owen Anderson | 0c2185a | 2009-06-16 20:19:28 +0000 | [diff] [blame] | 32 | return true; |
| 33 | } |
| 34 | |
Owen Anderson | 1c613d7 | 2009-06-18 18:26:15 +0000 | [diff] [blame] | 35 | bool RWMutexImpl::writer_acquire() { |
Owen Anderson | 0c2185a | 2009-06-16 20:19:28 +0000 | [diff] [blame] | 36 | return true; |
| 37 | } |
| 38 | |
Owen Anderson | 1c613d7 | 2009-06-18 18:26:15 +0000 | [diff] [blame] | 39 | bool RWMutexImpl::writer_release() { |
Owen Anderson | 0c2185a | 2009-06-16 20:19:28 +0000 | [diff] [blame] | 40 | return true; |
| 41 | } |
| 42 | |
| 43 | } |