whatcanGOwrong

go/pkg/mod/github.com/go-delve/delve@v1.23.0/_fixtures/teststepconcurrent.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"fmt"
+	"time"
+	"sync"
+)
+
+var v int = 99
+var wg sync.WaitGroup
+var s string
+
+func Foo(x, y int) (z int) {
+	//s = fmt.Sprintf("x=%d, y=%d, z=%d\n", x, y, z)
+	z = x + y
+	return
+}
+
+func Threads(fn func(x, y int) int) {
+	for j := 0; j < 100; j++ {
+		wg.Add(1)
+		go func() {
+			for k := 0; k < 100; k++ {
+				fn(1, 2)
+				time.Sleep(10 * time.Millisecond)
+			}
+			wg.Done()
+		}()
+	}
+}
+
+func main() {
+	x := v
+	y := x * x
+	var z int
+	Threads(Foo)
+	for i := 0; i < 100; i++ {
+		z = Foo(x, y)
+	}
+	fmt.Printf("z=%d\n", z)
+	wg.Wait()
+}