| // Copyright 2020 The Bazel Authors. All rights reserved. |
| // |
| // 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 bzltestutil |
| |
| import ( |
| "fmt" |
| "os" |
| "os/signal" |
| "runtime" |
| "syscall" |
| ) |
| |
| func RegisterTimeoutHandler() { |
| // When the Bazel test timeout is reached, Bazel sends a SIGTERM. We print stack traces for all |
| // goroutines just like native go test would. We do not panic (like native go test does) because |
| // users may legitimately want to use SIGTERM in tests and prints are less disruptive than |
| // panics in that case. |
| // See https://github.com/golang/go/blob/e816eb50140841c524fd07ecb4eaa078954eb47c/src/testing/testing.go#L2351 |
| c := make(chan os.Signal, 1) |
| signal.Notify(c, syscall.SIGTERM) |
| go func() { |
| <-c |
| buf := make([]byte, 1<<24) |
| stacklen := runtime.Stack(buf, true) |
| fmt.Printf("Received SIGTERM, printing stack traces of all goroutines:\n%s", buf[:stacklen]) |
| }() |
| } |