1//===- llvm/Support/Win32/Mutex.inc - Win32 Mutex Implementation -*- 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) Mutex 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" 20#include "llvm/Support/Mutex.h" 21 22namespace llvm { 23 24sys::MutexImpl::MutexImpl(bool /*recursive*/) 25{ 26 data_ = new CRITICAL_SECTION; 27 InitializeCriticalSection((LPCRITICAL_SECTION)data_); 28} 29 30sys::MutexImpl::~MutexImpl() 31{ 32 DeleteCriticalSection((LPCRITICAL_SECTION)data_); 33 delete (LPCRITICAL_SECTION)data_; 34 data_ = 0; 35} 36 37bool 38sys::MutexImpl::acquire() 39{ 40 EnterCriticalSection((LPCRITICAL_SECTION)data_); 41 return true; 42} 43 44bool 45sys::MutexImpl::release() 46{ 47 LeaveCriticalSection((LPCRITICAL_SECTION)data_); 48 return true; 49} 50 51bool 52sys::MutexImpl::tryacquire() 53{ 54 return TryEnterCriticalSection((LPCRITICAL_SECTION)data_); 55} 56 57} 58