csutil/threading/win32_tls.h Source File (Crystal Space 2.0 Public API Reference)

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csutil/threading/win32_tls.h

    00001 /*
    00002   Copyright (C) 2008 by Michael Gist
    00003
    00004   This library is free software; you can redistribute it and/or
    00005   modify it under the terms of the GNU Lesser General Public
    00006   License as published by the Free Software Foundation; either
    00007   version 2 of the License, or (at your option) any later version.
    00008
    00009   This library is distributed in the hope that it will be useful,
    00010   but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012   Library General Public License for more details.
    00013
    00014   You should have received a copy of the GNU Library General Public
    00015   License along with this library; if not, write to the Free
    00016   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00017 */
    00018
    00019 #ifndef __CS_CSUTIL_THREADING_WIN32_TLS_H__
    00020 #define __CS_CSUTIL_THREADING_WIN32_TLS_H__
    00021
    00022 #if !defined(CS_PLATFORM_WIN32)
    00023 #error "This file is only for Windows and requires you to include csysdefs.h before"
    00024 #else
    00025
    00026 #include "thread.h"
    00027
    00028 namespace CS
    00029 {
    00030   namespace Threading
    00031   {
    00032     namespace Implementation
    00033     {
    00034       class ThreadLocalBase
    00035       {
    00036       public:
    00037         typedef void (* DestructorFn)(void*);
    00038
    00039         ThreadLocalBase (DestructorFn dtor = 0) : dtor (dtor)
    00040         {
    00041           threadIndex = TlsAlloc();
    00042           // Register for later cleanup
    00043           if (dtor != 0)
    00044             ThreadBase::RegisterTlsInstance (this);
    00045         }
    00046
    00047         ~ThreadLocalBase()
    00048         {
    00049           // Remove from cleanup set
    00050           if (dtor != 0)
    00051             ThreadBase::UnregisterTlsInstance (this);
    00052
    00053           if(threadIndex != TLS_OUT_OF_INDEXES)
    00054           {
    00055             TlsFree(threadIndex);
    00056           }
    00057         }
    00058
    00059         void SetValue(void* data) const
    00060         {
    00061           TlsSetValue(threadIndex, data);
    00062         }
    00063
    00064         void* GetValue() const
    00065         {
    00066           return TlsGetValue(threadIndex);
    00067         }
    00068
    00069       protected:
    00070         friend class ThreadBase;
    00071
    00072         void CleanupInstance ()
    00073         {
    00074           void* p = TlsGetValue (threadIndex);
    00075           if (p != 0) dtor (p);
    00076         }
    00077
    00078         DWORD threadIndex;
    00079         DestructorFn dtor;
    00080       };
    00081     }
    00082   } // Threading
    00083 } // CS
    00084
    00085 #endif // !defined(CS_PLATFORM_WIN32)
    00086
    00087 #endif // __CS_CSUTIL_THREADING_WIN32_TLS_H__