mirror of
https://github.com/fleetdm/fleet
synced 2026-05-06 06:48:54 +00:00
45 lines
859 B
Go
45 lines
859 B
Go
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package ctxerr
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import (
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"fmt"
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"path/filepath"
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"runtime"
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)
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const (
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maxDepth = 10 // maximum number of stack frames to record
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)
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type stackTracer interface {
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List() []string
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}
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// stack holds a snapshot of program counters.
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type stack []uintptr
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// newStack captures a stack trace. skip specifies the number of frames to skip from
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// a stack trace. skip=0 records stack.New call as the innermost frame.
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func newStack(skip int) stack {
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pc := make([]uintptr, maxDepth+1)
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pc = pc[:runtime.Callers(skip+2, pc)]
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return stack(pc)
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}
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// List collects stack traces formatted as strings.
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func (s stack) List() []string {
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var lines []string
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cf := runtime.CallersFrames(s)
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for {
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f, more := cf.Next()
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line := fmt.Sprintf("%s (%s:%d)", f.Function, filepath.Base(f.File), f.Line)
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lines = append(lines, line)
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if !more {
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break
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}
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}
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return lines
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}
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