[#674] util: Rename SyncWorkerPool with PseudoWorkerPool

`SyncWorkerPool` name is more appropriate for worker pool of size 1.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/services/object/put/service.go

@@ -60,8 +60,8 @@ type cfg struct {
 
 func defaultCfg() *cfg {
 	return &cfg{
-		remotePool: new(util.SyncWorkerPool),
-		localPool:  new(util.SyncWorkerPool),
+		remotePool: new(util.PseudoWorkerPool),
+		localPool:  new(util.PseudoWorkerPool),
 		log:        zap.L(),
 	}
 }

pkg/util/worker_pool.go

@@ -11,13 +11,13 @@ type WorkerPool interface {
 	Submit(func()) error
 }
 
-// SyncWorkerPool represents synchronous worker pool.
-type SyncWorkerPool struct{}
+// PseudoWorkerPool represents pseudo worker pool which executes submitted job immediately in the caller's routine..
+type PseudoWorkerPool struct{}
 
 // Submit executes passed function immediately.
 //
 // Always returns nil.
-func (SyncWorkerPool) Submit(fn func()) error {
+func (PseudoWorkerPool) Submit(fn func()) error {
 	fn()
 
 	return nil