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get_stacks.go
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/
get_stacks.go
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// Copyright 2019 The Cockroach Authors.
//
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
//
// As of the Change Date specified in that file, in accordance with
// the Business Source License, use of this software will be governed
// by the Apache License, Version 2.0, included in the file
// licenses/APL.txt.
package log
import "runtime"
// getStacks is a wrapper for runtime.Stack that attempts to recover the data for all goroutines.
func getStacks(all bool) []byte {
// We don't know how big the traces are, so grow a few times if they don't fit. Start large, though.
n := 10000
if all {
n = 100000
}
var trace []byte
for i := 0; i < 5; i++ {
trace = make([]byte, n)
nbytes := runtime.Stack(trace, all)
if nbytes < len(trace) {
return trace[:nbytes]
}
n *= 2
}
return trace
}