go crashdump 源码
golang crashdump 代码
文件路径：/src/runtime/testdata/testprog/crashdump.go
// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"fmt"
"os"
"runtime"
)
func init() {
register("CrashDumpsAllThreads", CrashDumpsAllThreads)
}
func CrashDumpsAllThreads() {
const count = 4
runtime.GOMAXPROCS(count + 1)
chans := make([]chan bool, count)
for i := range chans {
chans[i] = make(chan bool)
go crashDumpsAllThreadsLoop(i, chans[i])
}
// Wait for all the goroutines to start executing.
for _, c := range chans {
<-c
}
// Tell our parent that all the goroutines are executing.
if _, err := os.NewFile(3, "pipe").WriteString("x"); err != nil {
fmt.Fprintf(os.Stderr, "write to pipe failed: %v\n", err)
os.Exit(2)
}
select {}
}
func crashDumpsAllThreadsLoop(i int, c chan bool) {
close(c)
for {
for j := 0; j < 0x7fffffff; j++ {
}
}
}
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