1 // 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ****************************************************************************** 5 * Copyright (C) 2014, International Business Machines 6 * Corporation and others. All Rights Reserved. 7 ****************************************************************************** 8 * sharedbreakiterator.h 9 */ 10 11 #ifndef __SHARED_BREAKITERATOR_H__ 12 #define __SHARED_BREAKITERATOR_H__ 13 14 #include "unicode/utypes.h" 15 #include "sharedobject.h" 16 17 #if !UCONFIG_NO_BREAK_ITERATION 18 19 U_NAMESPACE_BEGIN 20 21 class BreakIterator; 22 23 // SharedBreakIterator encapsulates a shared BreakIterator. Because 24 // BreakIterator has mutable semantics, clients must ensure that all uses 25 // of a particular shared BreakIterator is protected by the same mutex 26 // ensuring that only one thread at a time gets access to that shared 27 // BreakIterator. Clients can accomplish this by creating a mutex for all 28 // uses of break iterator within a particular class. Then objects of that 29 // class may then freely share break iterators among themselves. However, 30 // these shared break iterators must never be exposed outside of that class. 31 class U_I18N_API SharedBreakIterator : public SharedObject { 32 public: 33 SharedBreakIterator(BreakIterator *biToAdopt); 34 virtual ~SharedBreakIterator(); 35 36 BreakIterator *get() const { return ptr; } 37 BreakIterator *operator->() const { return ptr; } 38 BreakIterator &operator*() const { return *ptr; } 39 private: 40 BreakIterator *ptr; 41 SharedBreakIterator(const SharedBreakIterator &); 42 SharedBreakIterator &operator=(const SharedBreakIterator &); 43 }; 44 45 U_NAMESPACE_END 46 47 #endif 48 49 #endif 50
