47 lines
929 B
Go
47 lines
929 B
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at http://mozilla.org/MPL/2.0/.
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package model
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import (
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"fmt"
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"sync"
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"time"
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)
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type Holder interface {
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Holder() (string, int)
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}
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func deadlockDetect(mut sync.Locker, timeout time.Duration, name string) {
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go func() {
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for {
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time.Sleep(timeout / 4)
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ok := make(chan bool, 2)
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go func() {
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mut.Lock()
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mut.Unlock()
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ok <- true
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}()
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go func() {
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time.Sleep(timeout)
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ok <- false
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}()
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if r := <-ok; !r {
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msg := fmt.Sprintf("deadlock detected at %s", name)
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if hmut, ok := mut.(Holder); ok {
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holder, goid := hmut.Holder()
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msg = fmt.Sprintf("deadlock detected at %s, current holder: %s at routine %d", name, holder, goid)
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}
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panic(msg)
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}
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}
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}()
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}
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