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50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
/*
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* This file is subject to the terms and conditions defined in
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* file 'LICENSE.md', which is part of this source code package.
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*/
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package e2etest
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import (
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"fmt"
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"runtime"
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"strings"
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"time"
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)
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type memoryMeasure struct {
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start runtime.MemStats
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startTime time.Time
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end runtime.MemStats
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endTime time.Time
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}
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func startMemoryMeasurement() memoryMeasure {
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var m memoryMeasure
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runtime.ReadMemStats(&m.start)
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m.startTime = time.Now().UTC()
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return m
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}
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// Stops finishes the measurement.
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func (m *memoryMeasure) Stop() {
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runtime.ReadMemStats(&m.end)
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m.endTime = time.Now().UTC()
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}
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func (m memoryMeasure) Summary() string {
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alloc := float64(m.end.Alloc) - float64(m.start.Alloc)
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mallocs := int64(m.end.Mallocs) - int64(m.start.Mallocs)
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frees := int64(m.end.Frees) - int64(m.start.Frees)
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duration := m.endTime.Sub(m.startTime)
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var b strings.Builder
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b.WriteString(fmt.Sprintf("Duration: %.2f seconds\n", duration.Seconds()))
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b.WriteString(fmt.Sprintf("Alloc: %.2f MB\n", alloc/1024.0/1024.0))
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b.WriteString(fmt.Sprintf("Mallocs: %d\n", mallocs))
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b.WriteString(fmt.Sprintf("Frees: %d\n", frees))
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return b.String()
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}
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