Subversion Repositories sudoku

#include "counters.h"

static void initCounter(hwCounter_t &x, uint64_t counterConfig)

{

  if(!x.init)

    {

      memset(&(x.attr), 0, sizeof(x.attr));

      x.attr.disabled = 0;

      x.attr.type = PERF_TYPE_HARDWARE;

      x.attr.config =  counterConfig;

      pid_t pid = 0;

      int cpu = -1;

      int group_fd = -1;

      unsigned long flags = 0;

      x.fd = syscall(__NR_perf_event_open, &(x.attr), pid,

                     cpu, group_fd, flags);

      assert(x.fd >= 0);

      x.init = true;

    }

}

void initTicks(hwCounter_t &x)

{

  initCounter(x,PERF_COUNT_HW_CPU_CYCLES);

}

void initInsns(hwCounter_t &x)

{

  initCounter(x,PERF_COUNT_HW_INSTRUCTIONS);

}

uint64_t getTicks(hwCounter_t &x)

{

  int rc;

  if(!x.init)

    {

      initTicks(x);

    }

  rc = read(x.fd,&(x.buffer),sizeof(x.buffer));

  assert(rc == sizeof(x.buffer));

  return x.buffer;

}

uint64_t getInsns(hwCounter_t &x)

{

  int rc;

  if(!x.init)

    {

      initInsns(x);

    }

  rc = read(x.fd,&(x.buffer),sizeof(x.buffer));

  assert(rc == sizeof(x.buffer));

  return x.buffer;

}