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internal/debug: use pprof goroutine writer for debug_stacks #16892

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Merged
karalabe merged 4 commits into from
Jun 14, 2018
+4 −3
Merged

internal/debug: use pprof goroutine writer for debug_stacks #16892

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d5868b6
debug: Use pprof goroutine writer in debug.Stacks() to ensure all gor…
ryanschneider Jun 5, 2018
205b26b
internal/debug: simplify stacks handler
fjl Jun 14, 2018
53e5166
fix typo
karalabe Jun 14, 2018
0c022a7
fix pointer receiver
karalabe Jun 14, 2018
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7 changes: 4 additions & 3 deletions internal/debug/api.go
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
package debug

import (
"bytes"
"errors"
"io"
"os"
Expand Down Expand Up @@ -190,9 +191,9 @@ func (*HandlerT) WriteMemProfile(file string) error {

// Stacks returns a printed representation of the stacks of all goroutines.
func (*HandlerT) Stacks() string {
buf := make([]byte, 1024*1024)
buf = buf[:runtime.Stack(buf, true)]
return string(buf)
buf := new(bytes.Buffer)
pprof.Lookup("goroutine").WriteTo(buf, 2)
return buf.String()
}

// FreeOSMemory returns unused memory to the OS.
Expand Down