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-rw-r--r--src/runtime/testdata/testprog/vdso.go54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/runtime/testdata/testprog/vdso.go b/src/runtime/testdata/testprog/vdso.go
new file mode 100644
index 0000000..d2a300d
--- /dev/null
+++ b/src/runtime/testdata/testprog/vdso.go
@@ -0,0 +1,54 @@
+// Copyright 2019 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.
+
+// Invoke signal hander in the VDSO context (see issue 32912).
+
+package main
+
+import (
+ "fmt"
+ "os"
+ "runtime/pprof"
+ "time"
+)
+
+func init() {
+ register("SignalInVDSO", signalInVDSO)
+}
+
+func signalInVDSO() {
+ f, err := os.CreateTemp("", "timeprofnow")
+ if err != nil {
+ fmt.Fprintln(os.Stderr, err)
+ os.Exit(2)
+ }
+
+ if err := pprof.StartCPUProfile(f); err != nil {
+ fmt.Fprintln(os.Stderr, err)
+ os.Exit(2)
+ }
+
+ t0 := time.Now()
+ t1 := t0
+ // We should get a profiling signal 100 times a second,
+ // so running for 1 second should be sufficient.
+ for t1.Sub(t0) < time.Second {
+ t1 = time.Now()
+ }
+
+ pprof.StopCPUProfile()
+
+ name := f.Name()
+ if err := f.Close(); err != nil {
+ fmt.Fprintln(os.Stderr, err)
+ os.Exit(2)
+ }
+
+ if err := os.Remove(name); err != nil {
+ fmt.Fprintln(os.Stderr, err)
+ os.Exit(2)
+ }
+
+ fmt.Println("success")
+}