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atomicAdjust.h
00001 // Filename: atomicAdjust.h
00002 // Created by:  drose (09Aug02)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef ATOMICADJUST_H
00016 #define ATOMICADJUST_H
00017 
00018 #include "dtoolbase.h"
00019 #include "selectThreadImpl.h"
00020 
00021 #if defined(THREAD_DUMMY_IMPL)||defined(THREAD_SIMPLE_IMPL)
00022 
00023 #include "atomicAdjustDummyImpl.h"
00024 typedef AtomicAdjustDummyImpl AtomicAdjust;
00025 
00026 #elif  defined(__i386__) || defined(_M_IX86)
00027 // For an i386 architecture, we'll always use the i386 implementation.
00028 // It should be safe for any OS, and it might be a bit faster than
00029 // any OS-provided calls.
00030 
00031 #include "atomicAdjustI386Impl.h"
00032 typedef AtomicAdjustI386Impl AtomicAdjust;
00033 
00034 // These symbols are defined if the compare_and_exchange() methods are
00035 // implemented natively, without recourse to external locks.  If these
00036 // are not defined, users may elect to implement an operation with
00037 // some other method than compare_and_exchange(), which might be
00038 // faster.
00039 #define HAVE_ATOMIC_COMPARE_AND_EXCHANGE 1
00040 #define HAVE_ATOMIC_COMPARE_AND_EXCHANGE_PTR 1
00041 
00042 #elif defined(THREAD_WIN32_IMPL)
00043 
00044 #include "atomicAdjustWin32Impl.h"
00045 typedef AtomicAdjustWin32Impl AtomicAdjust;
00046 
00047 #define HAVE_ATOMIC_COMPARE_AND_EXCHANGE 1
00048 #define HAVE_ATOMIC_COMPARE_AND_EXCHANGE_PTR 1
00049 
00050 #elif defined(THREAD_LINUX_IMPL)
00051 
00052 #error Linux native threads are currently implemented only for i386; use Posix threads instead.
00053 
00054 #elif defined(THREAD_POSIX_IMPL)
00055 
00056 #include "atomicAdjustPosixImpl.h"
00057 typedef AtomicAdjustPosixImpl AtomicAdjust;
00058 
00059 #endif
00060 
00061 #endif
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