Replace bespoke WaitGroupErr with errgroup

PiperOrigin-RevId: 406027220

2 files changed, 0 insertions, 59 deletions

diff --git a/pkg/sync/BUILD b/pkg/sync/BUILD
index 517f16329..73791b456 100644
--- a/pkg/sync/BUILD
+++ b/pkg/sync/BUILD
@@ -26,7 +26,6 @@ go_library(
         "rwmutex_unsafe.go",
         "seqcount.go",
         "sync.go",
-        "wait.go",
     ],
     marshal = False,
     stateify = False,
diff --git a/pkg/sync/wait.go b/pkg/sync/wait.go
deleted file mode 100644
index f8e7742a5..000000000
--- a/pkg/sync/wait.go
+++ /dev/null
@@ -1,58 +0,0 @@
-// Copyright 2021 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package sync
-
-// WaitGroupErr is similar to WaitGroup but allows goroutines to report error.
-// Only the first error is retained and reported back.
-//
-// Example usage:
-// 	wg := WaitGroupErr{}
-// 	wg.Add(1)
-// 	go func() {
-//			defer wg.Done()
-//			if err := ...; err != nil {
-//				wg.ReportError(err)
-//				return
-// 			}
-// 	}()
-//	return wg.Error()
-//
-type WaitGroupErr struct {
-	WaitGroup
-
-	// mu protects firstErr.
-	mu Mutex
-
-	// firstErr holds the first error reported. nil is no error occurred.
-	firstErr error
-}
-
-// ReportError reports an error. Note it does not call Done().
-func (w *WaitGroupErr) ReportError(err error) {
-	w.mu.Lock()
-	defer w.mu.Unlock()
-	if w.firstErr == nil {
-		w.firstErr = err
-	}
-}
-
-// Error waits for the counter to reach 0 and returns the first reported error
-// if any.
-func (w *WaitGroupErr) Error() error {
-	w.Wait()
-	w.mu.Lock()
-	defer w.mu.Unlock()
-	return w.firstErr
-}