Exemplos de pinCPU em C++ (Cpp)

Exemplo n.º 1

Arquivo: CPUPET.c Projeto: iashishjha/CPUPET

void *worker_thread(void *pmyid) {
  long myid, validateLength, length, i, j, k, l, m;
  float sum;
  
  float *src1, *src2, *dst;
  float *asrc1, *asrc2, *adst;
    
  myid = (long) pmyid;
  printf("THREAD#%02ld START!!!\n", myid);

//cpu affinity  
  pinCPU(pmyid);
  
//init and alloc  
  mem_alloc_init(pmyid);
  
//sync-point
//  worker_thread_sync(pmyid);

//do-work 
  matmul_c(pmyid); 
   
//validate
  matmul_validate(pmyid);
    
//clean-up
  mem_dealloc(pmyid);
  
  if(DODEBUG) fflush(stdout);
  printf("THREAD#%02ld END!!!\n", myid);
  if(DODEBUG) fflush(stdout);
    
  if(myid) pthread_exit((void*)pmyid);
}

Exemplo n.º 2

Arquivo: main.c Projeto: rschoene/ftalat

int main(int argc, char** argv)
{
   struct sched_param sp;
   pthread_t bgth;

   if ( argc != 3 && argc != 5 )
   {
      usage();
      return -1;
   }

   unsigned int coreID = 0;
   unsigned int startFreq = 0;
   unsigned int targetFreq = 0;
   
   unsigned int argcCounter = 1;
   
   // Option for core specification
   if ( strcmp(argv[1],"-c")==0 )
   {
      if ( sscanf(argv[2],"%u",&coreID) != 1 )
      {
         fprintf(stderr,"Fail to get the core ID argument\n");
         return -2;
      }
      argcCounter +=2;
      
      if ( argc != 5 )
      {
         fprintf(stderr,"Missing frequencies arguments\n");
         usage();
         return -1;
      }
   }

   if ( sscanf(argv[argcCounter],"%u",&startFreq) != 1 )
   {
      fprintf(stderr,"Fail to get the start frequency argument\n");
      return -3;
   }

   if ( sscanf(argv[argcCounter+1],"%u",&targetFreq) != 1 )
   {
      fprintf(stderr,"Fail to get the target freq argument\n");
      return -4;
   }
   
   // Additional checks
   if ( coreID >= getCoreNumber() )
   {
      fprintf(stdout,"The core ID that user gave is invalid\n");
      fprintf(stdout,"Core ID is set to 0\n");
      coreID = 0;
   }
   
   initFreqInfo();
   
   if ( isFreqAvailable(coreID,startFreq) == 0 )
   {
      fprintf(stdout,"The starting frequency that you have entered (%d) is not available for the core %d\n",startFreq,coreID);
      fprintf(stdout,"Aborting");
      cleanup();
      return -6;
   }
   
   if ( isFreqAvailable(coreID,targetFreq) == 0 )
   {
      fprintf(stdout,"The target frequency that you have entered (%d) is not available for the core %d\n",targetFreq,coreID);
      fprintf(stdout,"Aborting");
      cleanup();
      return -7;
   }
   
   initCoreRelations();
   
   
#ifdef _DUMP
   openDump("./results.dump",NB_TRY_REPET_LOOP*NB_VALIDATION_REPET);
#endif

   // stay on cpu 2
   pinCPU(coreID);

   // create a background task to keep CPU awaken
   pthread_create(&bgth, NULL, thfn, NULL);
      
   // go realtime, max prio
   sched_getparam(0, &sp);
   sp.sched_priority = sched_get_priority_max(SCHED_FIFO);
   if (sched_setscheduler(0, SCHED_FIFO, &sp))
   {
      perror("setscheduler background");
   }

   if ( setCPUGovernor("userspace") != 0 )
   {
      fprintf(stderr,"We are unable to set \"userspace\" governor. Do you have cpufreq and permissions ?\n");
      cleanup();
      return -5;
   }

   // Set the minimal frequency
   if ( openFreqSetterFiles() != 0 )
   {
      cleanup();
      return -3;
   }

   setFreqForAllRelatedCore(coreID,getMinAvailableFreq(coreID));
   runTest(startFreq, targetFreq, coreID);

   // kill bg thread
   pthread_cancel(bgth);

   cleanup();
   return 0;
}