95 lines
1.6 KiB
Go
95 lines
1.6 KiB
Go
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package helpers
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import (
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"fmt"
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"strings"
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"sync"
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"time"
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"github.com/evanw/esbuild/internal/logger"
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)
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type Timer struct {
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mutex sync.Mutex
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data []timerData
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}
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type timerData struct {
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name string
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time time.Time
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isEnd bool
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}
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func (t *Timer) Begin(name string) {
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if t != nil {
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t.data = append(t.data, timerData{
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name: name,
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time: time.Now(),
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})
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}
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}
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func (t *Timer) End(name string) {
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if t != nil {
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t.data = append(t.data, timerData{
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name: name,
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time: time.Now(),
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isEnd: true,
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})
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}
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}
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func (t *Timer) Fork() *Timer {
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if t != nil {
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return &Timer{}
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}
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return nil
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}
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func (t *Timer) Join(other *Timer) {
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if t != nil && other != nil {
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t.mutex.Lock()
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defer t.mutex.Unlock()
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t.data = append(t.data, other.data...)
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}
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}
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func (t *Timer) Log(log logger.Log) {
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if t == nil {
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return
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}
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type pair struct {
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timerData
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index uint32
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}
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var notes []logger.MsgData
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var stack []pair
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indent := 0
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for _, item := range t.data {
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if !item.isEnd {
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top := pair{timerData: item, index: uint32(len(notes))}
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notes = append(notes, logger.MsgData{})
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stack = append(stack, top)
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indent++
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} else {
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indent--
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last := len(stack) - 1
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top := stack[last]
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stack = stack[:last]
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if item.name != top.name {
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panic("Internal error")
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}
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notes[top.index].Text = fmt.Sprintf("%s%s: %dms",
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strings.Repeat(" ", indent),
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top.name,
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item.time.Sub(top.time).Milliseconds())
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}
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}
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log.AddWithNotes(logger.Info, nil, logger.Range{},
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"Timing information (times may not nest hierarchically due to parallelism)", notes)
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}
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