Equalizer 1.0

commandCache.h

00001 
00002 /* Copyright (c) 2006-2011, Stefan Eilemann <eile@equalizergraphics.com> 
00003  *
00004  * This library is free software; you can redistribute it and/or modify it under
00005  * the terms of the GNU Lesser General Public License version 2.1 as published
00006  * by the Free Software Foundation.
00007  *  
00008  * This library is distributed in the hope that it will be useful, but WITHOUT
00009  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00010  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
00011  * details.
00012  * 
00013  * You should have received a copy of the GNU Lesser General Public License
00014  * along with this library; if not, write to the Free Software Foundation, Inc.,
00015  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00016  */
00017 
00018 #ifndef CO_COMMANDCACHE_H
00019 #define CO_COMMANDCACHE_H
00020 
00021 #include <co/types.h>
00022 #include <co/api.h>
00023 #include <co/base/atomic.h> // member
00024 #include <co/base/thread.h> // thread-safety checks
00025 
00026 namespace co
00027 {
00028     class Command;
00029     
00036     class CommandCache
00037     {
00038     public:
00039         CO_API CommandCache();
00040         CO_API ~CommandCache();
00041 
00043         CO_API Command& alloc( NodePtr node, LocalNodePtr localNode,
00044                                const uint64_t size );
00045 
00047         CO_API Command& clone( Command& from );
00048 
00050         void flush();
00051 
00052     private:
00053         enum Cache
00054         {
00055             CACHE_SMALL,
00056             CACHE_BIG,
00057             CACHE_ALL
00058         };
00059 
00060         typedef std::vector< Command* > Data;
00061         typedef Data::const_iterator DataCIter;
00062 
00064         Data _cache[ CACHE_ALL ];
00065 
00067         DataCIter _position[ CACHE_ALL ];
00068 
00070         base::a_int32_t _free[ CACHE_ALL ];
00071 
00073         int32_t _maxFree[ CACHE_ALL ];
00074 
00075         void _compact( const Cache which );
00076         Command& _newCommand( const Cache which );
00077 
00078         friend std::ostream& operator << ( std::ostream&, const CommandCache& );
00079         EQ_TS_VAR( _thread );
00080     };
00081 
00082     std::ostream& operator << ( std::ostream&, const CommandCache& );
00083 }
00084 
00085 #endif //CO_COMMANDCACHE_H
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