projekt pk_os_go

pk_os_go/g4.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+    "fmt"
+    "os"
+    "runtime"
+    "runtime/trace"
+    "time"
+    debug "runtime/debug"
+)
+
+func child(c chan string) {
+    for msg := range c {
+        c <- msg
+    }
+}
+
+func main() {
+    f, err := os.Create("trace.out")
+    if err != nil {
+        panic(err)
+    }
+    defer f.Close()
+
+    if err := trace.Start(f); err != nil {
+        panic(err)
+    }
+    defer trace.Stop()
+
+    runtime.GOMAXPROCS(1)
+    debug.SetGCPercent(-1)
+
+    c := make(chan string)
+    go child(c)
+
+    const niters = 2000000
+    for i := 0; i < niters; i++ {
+        c <- "test"
+        reply := <-c
+        if len(reply) != 4 {
+            panic("err")
+        }
+    }
+
+    fmt.Println("done")
+    time.Sleep(1 * time.Second)
+}