Revert "Merge branch 'dont-use-atomic' into 'master'"

This reverts merge request !653

2 files changed, 6 insertions, 23 deletions

diff --git a/STYLE.md b/STYLE.md
index d72775073..3a6ae2bad 100644
--- a/STYLE.md
+++ b/STYLE.md
@@ -107,15 +107,4 @@ instead of:
 func (server) GetBlob(_ *pb.GetBlobRequest, _ pb.BlobService_GetBlobServer) error {
     return helper.Unimplemented
 }
-```
-
-## Concurrency
-
-The [documentation of "sync/atomic"](https://golang.org/pkg/sync/atomic/) says:
-
-> These functions require great care to be used correctly. Except for
-special, low-level applications, synchronization is better done with
-channels or the facilities of the sync package.
-
-Gitaly is not a low-level application so we should avoid "sync/atomic".
-We use channels and [package "sync"](https://golang.org/pkg/sync/).
+```
\ No newline at end of file
diff --git a/internal/middleware/limithandler/testhelper_test.go b/internal/middleware/limithandler/testhelper_test.go
index e197b18f4..40eff4f01 100644
--- a/internal/middleware/limithandler/testhelper_test.go
+++ b/internal/middleware/limithandler/testhelper_test.go
@@ -1,29 +1,23 @@
 package limithandler_test
 
 import (
-	"sync"
+	"sync/atomic"
 
 	pb "gitlab.com/gitlab-org/gitaly/internal/middleware/limithandler/testpb"
 	"golang.org/x/net/context"
 )
 
 type server struct {
-	requestCount int
-	sync.Mutex
-	blockCh chan (struct{})
+	requestCount uint64
+	blockCh      chan (struct{})
 }
 
 func (s *server) registerRequest() {
-	s.Lock()
-	s.requestCount++
-	s.Unlock()
+	atomic.AddUint64(&s.requestCount, 1)
 }
 
 func (s *server) getRequestCount() int {
-	s.Lock()
-	count := s.requestCount
-	s.Unlock()
-	return count
+	return int(atomic.LoadUint64(&s.requestCount))
 }
 
 func (s *server) Unary(ctx context.Context, in *pb.UnaryRequest) (*pb.UnaryResponse, error) {