cfcbb4227f
This does not yet include support for the //go:embed directive added in this release. * Makefile.am (check-runtime): Don't create check-runtime-dir. (mostlyclean-local): Don't remove check-runtime-dir. (check-go-tool, check-vet): Copy in go.mod and modules.txt. (check-cgo-test, check-carchive-test): Add go.mod file. * Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/280172
54 lines
1,004 B
Go
54 lines
1,004 B
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Invoke signal hander in the VDSO context (see issue 32912).
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package main
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import (
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"fmt"
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"os"
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"runtime/pprof"
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"time"
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)
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func init() {
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register("SignalInVDSO", signalInVDSO)
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}
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func signalInVDSO() {
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f, err := os.CreateTemp("", "timeprofnow")
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(2)
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}
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if err := pprof.StartCPUProfile(f); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(2)
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}
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t0 := time.Now()
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t1 := t0
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// We should get a profiling signal 100 times a second,
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// so running for 1 second should be sufficient.
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for t1.Sub(t0) < time.Second {
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t1 = time.Now()
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}
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pprof.StopCPUProfile()
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name := f.Name()
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if err := f.Close(); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(2)
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}
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if err := os.Remove(name); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(2)
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}
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fmt.Println("success")
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}
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