chore: healthcheck only once check at same time

adapter/outboundgroup/groupbase.go

@@ -111,11 +111,11 @@ func (gb *GroupBase) URLTest(ctx context.Context, url string) (map[string]uint16
 		wg.Add(1)
 		go func() {
 			delay, err := proxy.URLTest(ctx, url)
-			lock.Lock()
 			if err == nil {
+				lock.Lock()
 				mp[proxy.Name()] = delay
-			}
 				lock.Unlock()
+			}
 
 			wg.Done()
 		}()

adapter/provider/healthcheck.go

@@ -2,6 +2,7 @@ package provider
 
 import (
 	"context"
+	"github.com/Dreamacro/clash/common/singledo"
 	"time"
 
 	"github.com/Dreamacro/clash/common/batch"
@@ -26,6 +27,7 @@ type HealthCheck struct {
 	lazy      bool
 	lastTouch *atomic.Int64
 	done      chan struct{}
+	singleDo  *singledo.Single[struct{}]
 }
 
 func (hc *HealthCheck) process() {
@@ -63,6 +65,7 @@ func (hc *HealthCheck) touch() {
 }
 
 func (hc *HealthCheck) check() {
+	_, _, _ = hc.singleDo.Do(func() (struct{}, error) {
 		b, _ := batch.New[bool](context.Background(), batch.WithConcurrencyNum[bool](10))
 		for _, proxy := range hc.proxies {
 			p := proxy
@@ -73,7 +76,10 @@ func (hc *HealthCheck) check() {
 				return false, nil
 			})
 		}
+
 		b.Wait()
+		return struct{}{}, nil
+	})
 }
 
 func (hc *HealthCheck) close() {
@@ -88,5 +94,6 @@ func NewHealthCheck(proxies []C.Proxy, url string, interval uint, lazy bool) *He
 		lazy:      lazy,
 		lastTouch: atomic.NewInt64(0),
 		done:      make(chan struct{}, 1),
+		singleDo:  singledo.NewSingle[struct{}](time.Second),
 	}
 }