threadpinning.cpp

            /**
             * pin the current thread 
             */
            cpu_set_t   *cpuset( nullptr );
            size_t cpu_allocate_size( -1 );
#if   (__GLIBC_MINOR__ > 9 ) && (__GLIBC__ == 2 )
            const int8_t   processors_to_allocate( 1 );
            cpuset = CPU_ALLOC( processors_to_allocate );
            assert( cpuset != nullptr );
            cpu_allocate_size = CPU_ALLOC_SIZE( processors_to_allocate );
            CPU_ZERO_S( cpu_allocate_size, cpuset );
#else
            cpu_allocate_size = sizeof( cpu_set_t );
            cpuset = (cpu_set_t*) malloc( cpu_allocate_size );
            assert( cpuset != nullptr );
            CPU_ZERO( cpuset );
#endif
            CPU_SET( d->core,
                     cpuset );
            errno = 0;
            if( sched_setaffinity( 0 /* calling thread */,
                                  cpu_allocate_size,
                                  cpuset ) != 0 )
            {
               perror( "Failed to set affinity for cycle counter!!" );
               exit( EXIT_FAILURE );
            }
            /** wait till we know we're on the right processor **/
            pthread_yield();