func (m *CirconusMetrics) SetHistogramValue(metric string, val float64) {
	hist := m.NewHistogram(metric)

	m.hm.Lock()
	hist.rw.Lock()
	hist.hist.RecordValue(val)
	hist.rw.Unlock()
	m.hm.Unlock()
}
func (m *CirconusMetrics) SetHistogramValue(metric string, val float64) {
	hist := m.NewHistogram(metric)

	m.hm.Lock()
	hist.rw.Lock()
	hist.hist.RecordValue(val)
	hist.rw.Unlock()
	m.hm.Unlock()
}
// SetHistogramValue adds a value to a histogram