b424d0232b
These includes are needed. The current code includes them in .cpp files *before* including these include files, but that is not very clean, and not useful. Actually including what a header file needs makes it more clear what it drags in, it doesn't drag in more then before. It also allows to include these headers without having to includes needed for the included header file in a specific order, in every .cpp file.
93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
/**
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* @file llrefcount.h
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* @brief Base class for reference counted objects for use with LLPointer
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*
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* $LicenseInfo:firstyear=2002&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LLREFCOUNT_H
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#define LLREFCOUNT_H
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#include <boost/noncopyable.hpp>
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#include "llpreprocessor.h" // LL_COMMON_API
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#include "stdtypes.h" // S32
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#include "llerror.h" // llassert
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#define LL_REF_COUNT_DEBUG 0
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#if LL_REF_COUNT_DEBUG
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#include "llthread.h" // LLMutexRootPool
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#endif
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//----------------------------------------------------------------------------
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// RefCount objects should generally only be accessed by way of LLPointer<>'s
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// see llthread.h for LLThreadSafeRefCount
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//----------------------------------------------------------------------------
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class LL_COMMON_API LLRefCount
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{
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protected:
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LLRefCount(const LLRefCount& other);
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LLRefCount& operator=(const LLRefCount&);
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virtual ~LLRefCount(); // use unref()
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public:
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LLRefCount();
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#if LL_REF_COUNT_DEBUG
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void ref() const ;
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S32 unref() const ;
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#else
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inline void ref() const
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{
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mRef++;
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}
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inline S32 unref() const
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{
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llassert(mRef >= 1);
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if (0 == --mRef)
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{
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delete this;
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return 0;
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}
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return mRef;
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}
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#endif
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//NOTE: when passing around a const LLRefCount object, this can return different results
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// at different types, since mRef is mutable
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S32 getNumRefs() const
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{
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return mRef;
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}
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private:
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mutable S32 mRef;
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#if LL_REF_COUNT_DEBUG
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mutable LLMutexRootPool mMutex ;
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mutable AIThreadID mLockedThreadID ;
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mutable BOOL mCrashAtUnlock ;
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#endif
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};
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#endif
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