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exectime.go
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exectime.go
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/*
_____ _____ _____ ____ ______ _____ ------
| | | | | | | | | | | | |
| | | | | | | | | | | | |
| --- | | | | |-----| |---- | | |-----| |----- ------
| | | | | | | | | | | | |
| ____| |_____ | ____| | ____| | |_____| _____| |_____ |_____
Licensed under the MIT License <http://opensource.org/licenses/MIT>.
Copyright © 2023-2024 Seagate Technology LLC and/or its Affiliates
Copyright © 2020-2024 Microsoft Corporation. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE
*/
package exectime
import (
"fmt"
"io"
"os"
"time"
)
type Timer struct {
out io.Writer
timeMap map[string]time.Time
statsMap map[string]*RunningStatistics
debug bool
}
var timer *Timer
func StatTimeCurrentBlock(name string) func() { return timer.StatTimeCurrentBlock(name) }
func (t *Timer) StatTimeCurrentBlock(key string) func() {
if t.debug {
start := time.Now()
return func() {
dur := time.Since(start)
stat := t.statsMap[key]
if stat == nil {
t.statsMap[key] = NewRunningStatistics()
t.statsMap[key].Push(dur)
} else {
t.statsMap[key].Push(dur)
}
}
}
return func() {}
}
func PrintStats() { timer.PrintStats() }
func (t *Timer) PrintStats() {
if t.debug {
separator := "\n\n\n******************************************Stats******************************************\n\n\n"
_, err := t.out.Write([]byte(separator))
if err != nil {
fmt.Printf("Timer::PrintStats: error writing [%s]\n", err)
}
for key, stat := range t.statsMap {
total := stat.Mean() * time.Duration(stat.N)
msg := fmt.Sprintf("%s: avg=%s, std=%s, total=%s, ops/sec=%f\n", key, stat.Mean(), stat.StandardDeviation(), total, (1.0 / float64(stat.Mean().Seconds())))
_, err = t.out.Write([]byte(msg))
if err != nil {
fmt.Printf("Timer::PrintStats: error writing [%s]\n", err)
}
}
}
}
func TimeCurrentBlock(name string) func() { return timer.TimeCurrentBlock(name) }
func (t *Timer) TimeCurrentBlock(name string) func() {
if t.debug {
start := time.Now()
return func() {
msg := fmt.Sprintf("%s took %v\n", name, time.Since(start))
_, err := t.out.Write([]byte(msg))
if err != nil {
fmt.Printf("Timer::TimeCurrentBlock for %s: error [%s]\n", name, err)
}
}
} else {
return func() {}
}
}
func SwitchOnDebug() { timer.SwitchOnDebug() }
func (t *Timer) SwitchOnDebug() {
t.debug = true
}
func SwitchOffDebug() { timer.SwitchOffDebug() }
func (t *Timer) SwitchOffDebug() {
t.debug = false
}
func Start(key string) { timer.Start(key) }
func (t *Timer) Start(key string) {
t.timeMap[key] = time.Now()
}
func Stop(key string) { timer.Stop(key) }
func (t *Timer) Stop(key string) {
last := t.timeMap[key]
msg := fmt.Sprintf("%s took %v\n", key, time.Since(last))
_, err := t.out.Write([]byte(msg))
if err != nil {
fmt.Printf("Timer::TimeCurrentBlock for %s: error [%s]", key, err)
}
}
func New(out io.Writer, debug bool) *Timer {
return &Timer{
out: out,
debug: debug,
timeMap: make(map[string]time.Time),
statsMap: make(map[string]*RunningStatistics),
}
}
func SetDefault(out io.Writer, debug bool) {
timer = &Timer{
out: out,
debug: debug,
timeMap: make(map[string]time.Time),
statsMap: make(map[string]*RunningStatistics),
}
}
func init() {
timer = New(os.Stdout, true)
}