Line data    Source code

       1             : 
       2             : /* Copyright (c) 2010-2013, Stefan Eilemann <eile@equalizergraphics.com>
       3             :  *                    2012, Daniel Nachbaur <danielnachbaur@gmail.com>
       4             :  *
       5             :  * This library is free software; you can redistribute it and/or modify it under
       6             :  * the terms of the GNU Lesser General Public License version 2.1 as published
       7             :  * by the Free Software Foundation.
       8             :  *
       9             :  * This library is distributed in the hope that it will be useful, but WITHOUT
      10             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      11             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      12             :  * details.
      13             :  *
      14             :  * You should have received a copy of the GNU Lesser General Public License
      15             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      16             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      17             :  */
      18             : 
      19             : #include <pthread.h>
      20             : #include <test.h>
      21             : #include <lunchbox/clock.h>
      22             : #include <lunchbox/compiler.h>
      23             : #include <lunchbox/mtQueue.h>
      24             : #include <lunchbox/thread.h>
      25             : #include <iostream>
      26             : 
      27             : #define NOPS 100000
      28             : #define NTHREADS 4
      29             : 
      30           1 : lunchbox::MTQueue< uint64_t > queue;
      31           1 : lunchbox::MTQueue< uint64_t >::Group group( NTHREADS + 1 );
      32             : 
      33             : #ifdef LB_GCC_4_6_OR_LATER
      34             : #  pragma GCC diagnostic ignored "-Wunused-but-set-variable"
      35             : #endif
      36           4 : class ReadThread : public lunchbox::Thread
      37             : {
      38             : public:
      39           4 :     virtual ~ReadThread() {}
      40           4 :     virtual void run() { run_(); }
      41             : 
      42           5 :     static void run_()
      43             :     {
      44           5 :         uint64_t item = 0xffffffffffffffffull;
      45             : #ifndef NDEBUG
      46           5 :         uint64_t last = 0;
      47             : #endif
      48       99610 :         while( queue.popBarrier( item, group ))
      49             :         {
      50             : #ifndef NDEBUG
      51       99661 :             TESTINFO( last < item, last << " >= " << item );
      52       99600 :             last = item;
      53             : #endif
      54             :         }
      55           5 :         TEST( queue.isEmpty( ));
      56           5 :     }
      57             : };
      58             : 
      59           1 : int main( int, char** )
      60             : {
      61           5 :     ReadThread reader[ NTHREADS ];
      62           5 :     for( size_t i = 0; i < NTHREADS; ++i )
      63           4 :         TEST( reader[i].start( ));
      64             : 
      65           2 :     lunchbox::Clock clock;
      66      100000 :     for( size_t i = 1 ; i < NOPS; ++i )
      67       99999 :         queue.push( i );
      68           1 :     const float time = clock.getTimef();
      69             : 
      70           1 :     ReadThread::run_();
      71             : 
      72           5 :     for( size_t i = 0; i < NTHREADS; ++i )
      73           4 :         TEST( reader[i].join( ));
      74             : 
      75           1 :     std::cout << NOPS/time << " writes/ms" << std::endl;
      76           6 :     return EXIT_SUCCESS;
      77           3 : }