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timebuckets.go
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timebuckets.go
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package profiling
import (
"sync"
"time"
"github.com/adamwalz/keybase-client/go/logger"
"github.com/keybase/clockwork"
"golang.org/x/net/context"
)
type ctxKeyType string
var ctxKey = ctxKeyType("timebuckets")
type TimeBuckets struct {
sync.Mutex
clock clockwork.Clock
log logger.Logger
times map[string]time.Duration
}
func NewTimeBuckets(clock clockwork.Clock, log logger.Logger) *TimeBuckets {
return &TimeBuckets{
clock: clock,
log: log,
times: make(map[string]time.Duration),
}
}
func (t *TimeBuckets) Record(bucketName string) FinFn {
start := t.clock.Now()
return func() {
duration := t.clock.Since(start)
t.Lock()
defer t.Unlock()
t.times[bucketName] += duration
}
}
func (t *TimeBuckets) Get(bucketName string) time.Duration {
t.Lock()
defer t.Unlock()
return t.times[bucketName]
}
func (t *TimeBuckets) Log(ctx context.Context, bucketName string) {
t.log.CDebugf(ctx, "TimeBucket %s [time=%s]", bucketName, t.Get(bucketName))
}
func (t *TimeBuckets) LogIfNonZero(ctx context.Context, bucketName string) {
d := t.Get(bucketName)
if d != 0 {
t.log.CDebugf(ctx, "TimeBucket %s [time=%s]", bucketName, d)
}
}
type FinFn func()
func WithTimeBuckets(ctx context.Context, clock clockwork.Clock, log logger.Logger) (context.Context, *TimeBuckets) {
v, ok := ctx.Value(ctxKey).(*TimeBuckets)
if ok && v != nil {
return ctx, v
}
buckets := NewTimeBuckets(clock, log)
ctx = context.WithValue(ctx, ctxKey, buckets)
return ctx, buckets
}