1 files changed, 60 insertions, 0 deletions
diff --git a/src/runtime/testdata/testprogcgo/trace.go b/src/runtime/testdata/testprogcgo/trace.go
new file mode 100644
index 0000000..875434b
--- /dev/null
+++ b/src/runtime/testdata/testprogcgo/trace.go
@@ -0,0 +1,60 @@
+// Copyright 2023 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.
+
+package main
+
+/*
+// Defined in trace_*.c.
+void cCalledFromGo(void);
+*/
+import "C"
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"runtime/trace"
+)
+
+func init() {
+	register("Trace", Trace)
+}
+
+// Trace is used by TestTraceUnwindCGO.
+func Trace() {
+	file, err := os.CreateTemp("", "testprogcgo_trace")
+	if err != nil {
+		log.Fatalf("failed to create temp file: %s", err)
+	}
+	defer file.Close()
+
+	if err := trace.Start(file); err != nil {
+		log.Fatal(err)
+	}
+	defer trace.Stop()
+
+	goCalledFromGo()
+	<-goCalledFromCThreadChan
+
+	fmt.Printf("trace path:%s", file.Name())
+}
+
+// goCalledFromGo calls cCalledFromGo which calls back into goCalledFromC and
+// goCalledFromCThread.
+func goCalledFromGo() {
+	C.cCalledFromGo()
+}
+
+//export goCalledFromC
+func goCalledFromC() {
+	trace.Log(context.Background(), "goCalledFromC", "")
+}
+
+var goCalledFromCThreadChan = make(chan struct{})
+
+//export goCalledFromCThread
+func goCalledFromCThread() {
+	trace.Log(context.Background(), "goCalledFromCThread", "")
+	close(goCalledFromCThreadChan)
+}