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// **********************************************************************
//
// Copyright (c) 2003-2010 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#ifndef ICE_UTIL_STATIC_MUTEX_H
#define ICE_UTIL_STATIC_MUTEX_H
#include <IceUtil/Config.h>
#include <IceUtil/Lock.h>
#include <IceUtil/ThreadException.h>
#if defined(_MSC_VER) && (_MSC_VER < 1300)
//
// Old versions of the Platform SDK don't have InterlockedCompareExchangePointer
//
# ifndef InterlockedCompareExchangePointer
# define InterlockedCompareExchangePointer(Destination, ExChange, Comperand) \
InterlockedCompareExchange(Destination, ExChange, Comperand)
# endif
#endif
namespace IceUtil
{
//
// Forward declaration for friend.
//
class Cond;
//
// Simple non-recursive Mutex implementation.
// These mutexes are POD types (see ISO C++ 9(4) and 8.5.1) and must be
// initialized statically using ICE_STATIC_MUTEX_INITIALIZER.
//
//
class ICE_UTIL_API StaticMutex
{
public:
//
// Lock & TryLock typedefs.
//
typedef LockT<StaticMutex> Lock;
typedef TryLockT<StaticMutex> TryLock;
//
// Note that lock/tryLock & unlock in general should not be used
// directly. Instead use Lock & TryLock.
//
ICE_DEPRECATED_API void lock() const;
//
// Returns true if the lock was acquired, and false otherwise.
//
ICE_DEPRECATED_API bool tryLock() const;
ICE_DEPRECATED_API void unlock() const;
#ifdef _WIN32
ICE_DEPRECATED_API mutable CRITICAL_SECTION* _mutex;
#else
ICE_DEPRECATED_API mutable pthread_mutex_t _mutex;
#endif
#if !defined(_MSC_VER) && !defined(__BCPLUSPLUS__)
// COMPILERBUG
// VC++ BC++ considers that aggregates should not have private members ...
// even if it's just functions.
private:
#endif
//
// LockState and the lock/unlock variations are for use by the
// Condition variable implementation.
//
#ifdef _WIN32
struct LockState
{
};
#else
struct LockState
{
pthread_mutex_t* mutex;
};
#endif
void unlock(LockState&) const;
void lock(LockState&) const;
#ifdef _WIN32
bool initialized() const;
void initialize() const;
#endif
#ifndef _MSC_VER
friend class Cond;
#endif
};
#ifdef _WIN32
# define ICE_STATIC_MUTEX_INITIALIZER { 0 }
#else
# define ICE_STATIC_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER }
#endif
} // End namespace IceUtil
#endif
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