diff options
Diffstat (limited to 'pkg/goid/goid_test.go')
-rw-r--r-- | pkg/goid/goid_test.go | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/pkg/goid/goid_test.go b/pkg/goid/goid_test.go deleted file mode 100644 index 31970ce79..000000000 --- a/pkg/goid/goid_test.go +++ /dev/null @@ -1,74 +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. - -// +build race - -package goid - -import ( - "runtime" - "sync" - "testing" -) - -func TestInitialGoID(t *testing.T) { - const max = 10000 - if id := goid(); id < 0 || id > max { - t.Errorf("got goid = %d, want 0 < goid <= %d", id, max) - } -} - -// TestGoIDSquence verifies that goid returns values which could plausibly be -// goroutine IDs. If this test breaks or becomes flaky, the structs in -// goid_unsafe.go may need to be updated. -func TestGoIDSquence(t *testing.T) { - // Goroutine IDs are cached by each P. - runtime.GOMAXPROCS(1) - - // Fill any holes in lower range. - for i := 0; i < 50; i++ { - var wg sync.WaitGroup - wg.Add(1) - go func() { - wg.Done() - - // Leak the goroutine to prevent the ID from being - // reused. - select {} - }() - wg.Wait() - } - - id := goid() - for i := 0; i < 100; i++ { - var ( - newID int64 - wg sync.WaitGroup - ) - wg.Add(1) - go func() { - newID = goid() - wg.Done() - - // Leak the goroutine to prevent the ID from being - // reused. - select {} - }() - wg.Wait() - if max := id + 100; newID <= id || newID > max { - t.Errorf("unexpected goroutine ID pattern, got goid = %d, want %d < goid <= %d (previous = %d)", newID, id, max, id) - } - id = newID - } -} |