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Diffstat (limited to 'pkg/goid/goid_test.go')
-rw-r--r--pkg/goid/goid_test.go81
1 files changed, 0 insertions, 81 deletions
diff --git a/pkg/goid/goid_test.go b/pkg/goid/goid_test.go
deleted file mode 100644
index 54be11d63..000000000
--- a/pkg/goid/goid_test.go
+++ /dev/null
@@ -1,81 +0,0 @@
-// Copyright 2020 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 goid
-
-import (
- "runtime"
- "sync"
- "testing"
- "time"
-)
-
-func TestUniquenessAndConsistency(t *testing.T) {
- const (
- numGoroutines = 5000
-
- // maxID is not an intrinsic property of goroutine IDs; it is only a
- // property of how the Go runtime currently assigns them. Future
- // changes to the Go runtime may require that maxID be raised, or that
- // assertions regarding it be removed entirely.
- maxID = numGoroutines + 1000
- )
-
- var (
- goidsMu sync.Mutex
- goids = make(map[int64]struct{})
- checkedWG sync.WaitGroup
- exitCh = make(chan struct{})
- )
- for i := 0; i < numGoroutines; i++ {
- checkedWG.Add(1)
- go func() {
- id := Get()
- if id > maxID {
- t.Errorf("observed unexpectedly large goroutine ID %d", id)
- }
- goidsMu.Lock()
- if _, dup := goids[id]; dup {
- t.Errorf("observed duplicate goroutine ID %d", id)
- }
- goids[id] = struct{}{}
- goidsMu.Unlock()
- checkedWG.Done()
- for {
- if curID := Get(); curID != id {
- t.Errorf("goroutine ID changed from %d to %d", id, curID)
- // Don't spam logs by repeating the check; wait quietly for
- // the test to finish.
- <-exitCh
- return
- }
- // Check if the test is over.
- select {
- case <-exitCh:
- return
- default:
- }
- // Yield to other goroutines, and possibly migrate to another P.
- runtime.Gosched()
- }
- }()
- }
- // Wait for all goroutines to perform uniqueness checks.
- checkedWG.Wait()
- // Wait for an additional second to allow goroutines to spin checking for
- // ID consistency.
- time.Sleep(time.Second)
- // Request that all goroutines exit.
- close(exitCh)
-}