src/hotspot/share/gc/z/zStat.cpp

*** 422,434 ****
  
    const uint32_t ncpus = ZCPU::count();
    for (uint32_t i = 0; i < ncpus; i++) {
      ZStatSamplerData* const cpu_data = get_cpu_local<ZStatSamplerData>(i);
      if (cpu_data->_nsamples > 0) {
!       const uint64_t nsamples = Atomic::xchg((uint64_t)0, &cpu_data->_nsamples);
!       const uint64_t sum = Atomic::xchg((uint64_t)0, &cpu_data->_sum);
!       const uint64_t max = Atomic::xchg((uint64_t)0, &cpu_data->_max);
        all._nsamples += nsamples;
        all._sum += sum;
        if (all._max < max) {
          all._max = max;
        }
--- 422,434 ----
  
    const uint32_t ncpus = ZCPU::count();
    for (uint32_t i = 0; i < ncpus; i++) {
      ZStatSamplerData* const cpu_data = get_cpu_local<ZStatSamplerData>(i);
      if (cpu_data->_nsamples > 0) {
!       const uint64_t nsamples = Atomic::xchg(&cpu_data->_nsamples, (uint64_t)0);
!       const uint64_t sum = Atomic::xchg(&cpu_data->_sum, (uint64_t)0);
!       const uint64_t max = Atomic::xchg(&cpu_data->_max, (uint64_t)0);
        all._nsamples += nsamples;
        all._sum += sum;
        if (all._max < max) {
          all._max = max;
        }
*** 457,467 ****
    uint64_t counter = 0;
  
    const uint32_t ncpus = ZCPU::count();
    for (uint32_t i = 0; i < ncpus; i++) {
      ZStatCounterData* const cpu_data = get_cpu_local<ZStatCounterData>(i);
!     counter += Atomic::xchg((uint64_t)0, &cpu_data->_counter);
    }
  
    ZStatSample(_sampler, counter);
  }
  
--- 457,467 ----
    uint64_t counter = 0;
  
    const uint32_t ncpus = ZCPU::count();
    for (uint32_t i = 0; i < ncpus; i++) {
      ZStatCounterData* const cpu_data = get_cpu_local<ZStatCounterData>(i);
!     counter += Atomic::xchg(&cpu_data->_counter, (uint64_t)0);
    }
  
    ZStatSample(_sampler, counter);
  }
  
*** 479,489 ****
    ZStatCounterData all;
  
    const uint32_t ncpus = ZCPU::count();
    for (uint32_t i = 0; i < ncpus; i++) {
      ZStatCounterData* const cpu_data = get_cpu_local<ZStatCounterData>(i);
!     all._counter += Atomic::xchg((uint64_t)0, &cpu_data->_counter);
    }
  
    return all;
  }
  
--- 479,489 ----
    ZStatCounterData all;
  
    const uint32_t ncpus = ZCPU::count();
    for (uint32_t i = 0; i < ncpus; i++) {
      ZStatCounterData* const cpu_data = get_cpu_local<ZStatCounterData>(i);
!     all._counter += Atomic::xchg(&cpu_data->_counter, (uint64_t)0);
    }
  
    return all;
  }