1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/common/mutex.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,77 @@
1.4 +/*
1.5 +******************************************************************************
1.6 +*
1.7 +* Copyright (C) 1997-2013, International Business Machines
1.8 +* Corporation and others. All Rights Reserved.
1.9 +*
1.10 +******************************************************************************
1.11 +*/
1.12 +//----------------------------------------------------------------------------
1.13 +// File: mutex.h
1.14 +//
1.15 +// Lightweight C++ wrapper for umtx_ C mutex functions
1.16 +//
1.17 +// Author: Alan Liu 1/31/97
1.18 +// History:
1.19 +// 06/04/97 helena Updated setImplementation as per feedback from 5/21 drop.
1.20 +// 04/07/1999 srl refocused as a thin wrapper
1.21 +//
1.22 +//----------------------------------------------------------------------------
1.23 +#ifndef MUTEX_H
1.24 +#define MUTEX_H
1.25 +
1.26 +#include "unicode/utypes.h"
1.27 +#include "unicode/uobject.h"
1.28 +#include "umutex.h"
1.29 +
1.30 +U_NAMESPACE_BEGIN
1.31 +
1.32 +//----------------------------------------------------------------------------
1.33 +// Code within that accesses shared static or global data should
1.34 +// should instantiate a Mutex object while doing so. You should make your own
1.35 +// private mutex where possible.
1.36 +
1.37 +// For example:
1.38 +//
1.39 +// UMutex myMutex;
1.40 +//
1.41 +// void Function(int arg1, int arg2)
1.42 +// {
1.43 +// static Object* foo; // Shared read-write object
1.44 +// Mutex mutex(&myMutex); // or no args for the global lock
1.45 +// foo->Method();
1.46 +// // When 'mutex' goes out of scope and gets destroyed here, the lock is released
1.47 +// }
1.48 +//
1.49 +// Note: Do NOT use the form 'Mutex mutex();' as that merely forward-declares a function
1.50 +// returning a Mutex. This is a common mistake which silently slips through the
1.51 +// compiler!!
1.52 +//
1.53 +
1.54 +class U_COMMON_API Mutex : public UMemory {
1.55 +public:
1.56 + inline Mutex(UMutex *mutex = NULL);
1.57 + inline ~Mutex();
1.58 +
1.59 +private:
1.60 + UMutex *fMutex;
1.61 +
1.62 + Mutex(const Mutex &other); // forbid copying of this class
1.63 + Mutex &operator=(const Mutex &other); // forbid copying of this class
1.64 +};
1.65 +
1.66 +inline Mutex::Mutex(UMutex *mutex)
1.67 + : fMutex(mutex)
1.68 +{
1.69 + umtx_lock(fMutex);
1.70 +}
1.71 +
1.72 +inline Mutex::~Mutex()
1.73 +{
1.74 + umtx_unlock(fMutex);
1.75 +}
1.76 +
1.77 +U_NAMESPACE_END
1.78 +
1.79 +#endif //_MUTEX_
1.80 +//eof
