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https://github.com/hanzoai/visor.git
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Fabricio VoznikaandgVisor bot
0b39816a36
Getting state of a stopped container would fail and could lead containerd to not detecting that the container had actually stopped. Now stopped and deleted containers return `stopped` state. Also makes other messages more consistent when container is stopped. Some where still sending messages to runsc and failing in different ways. Now they go through `initState` state machine like the other messages. There are a few changes to improve debugability with it as well. Fixes #5861 PiperOrigin-RevId: 380698513
49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
// Copyright 2021 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package shim
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import (
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"os"
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"os/signal"
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"runtime"
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"sync"
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"syscall"
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"github.com/containerd/containerd/log"
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)
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var once sync.Once
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func setDebugSigHandler() {
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once.Do(func() {
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dumpCh := make(chan os.Signal, 1)
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signal.Notify(dumpCh, syscall.SIGUSR2)
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go func() {
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buf := make([]byte, 10240)
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for range dumpCh {
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for {
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n := runtime.Stack(buf, true)
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if n >= len(buf) {
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buf = make([]byte, 2*len(buf))
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continue
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}
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log.L.Debugf("User requested stack trace:\n%s", buf[:n])
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}
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}
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}()
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log.L.Debugf("For full process dump run: kill -%d %d", syscall.SIGUSR2, os.Getpid())
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})
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}
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