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#ifndef SRC_HISTOGRAM_INL_H_
#define SRC_HISTOGRAM_INL_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "histogram.h"
#include "base_object-inl.h"
#include "node_internals.h"
namespace node {
void Histogram::Reset() {
Mutex::ScopedLock lock(mutex_);
hdr_reset(histogram_.get());
exceeds_ = 0;
count_ = 0;
prev_ = 0;
}
double Histogram::Add(const Histogram& other) {
Mutex::ScopedLock lock(mutex_);
count_ += other.count_;
exceeds_ += other.exceeds_;
if (other.prev_ > prev_)
prev_ = other.prev_;
return static_cast<double>(hdr_add(histogram_.get(), other.histogram_.get()));
}
size_t Histogram::Count() const {
Mutex::ScopedLock lock(mutex_);
return count_;
}
int64_t Histogram::Min() const {
Mutex::ScopedLock lock(mutex_);
return hdr_min(histogram_.get());
}
int64_t Histogram::Max() const {
Mutex::ScopedLock lock(mutex_);
return hdr_max(histogram_.get());
}
double Histogram::Mean() const {
Mutex::ScopedLock lock(mutex_);
return hdr_mean(histogram_.get());
}
double Histogram::Stddev() const {
Mutex::ScopedLock lock(mutex_);
return hdr_stddev(histogram_.get());
}
int64_t Histogram::Percentile(double percentile) const {
Mutex::ScopedLock lock(mutex_);
CHECK_GT(percentile, 0);
CHECK_LE(percentile, 100);
return hdr_value_at_percentile(histogram_.get(), percentile);
}
template <typename Iterator>
void Histogram::Percentiles(Iterator&& fn) {
Mutex::ScopedLock lock(mutex_);
hdr_iter iter;
hdr_iter_percentile_init(&iter, histogram_.get(), 1);
while (hdr_iter_next(&iter)) {
double key = iter.specifics.percentiles.percentile;
fn(key, iter.value);
}
}
bool Histogram::Record(int64_t value) {
Mutex::ScopedLock lock(mutex_);
bool recorded = hdr_record_value(histogram_.get(), value);
if (!recorded)
exceeds_++;
else
count_++;
return recorded;
}
uint64_t Histogram::RecordDelta() {
Mutex::ScopedLock lock(mutex_);
uint64_t time = uv_hrtime();
int64_t delta = 0;
if (prev_ > 0) {
CHECK_GE(time, prev_);
delta = time - prev_;
if (hdr_record_value(histogram_.get(), delta))
count_++;
else
exceeds_++;
}
prev_ = time;
return delta;
}
size_t Histogram::GetMemorySize() const {
Mutex::ScopedLock lock(mutex_);
return hdr_get_memory_size(histogram_.get());
}
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_HISTOGRAM_INL_H_
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