Imported Upstream version 4.8.1

[platform/upstream/gcc48.git] / gcc / testsuite / go.test / test / bench / garbage / tree2.go

diff --git a/gcc/testsuite/go.test/test/bench/garbage/tree2.go b/gcc/testsuite/go.test/test/bench/garbage/tree2.go
index 6d78f72..a171c69 100644 (file)
--- a/gcc/testsuite/go.test/test/bench/garbage/tree2.go
+++ b/gcc/testsuite/go.test/test/bench/garbage/tree2.go
@@ -11,6 +11,7 @@ import (
        "os"
        "runtime"
        "runtime/pprof"
+       "time"
        "unsafe"
 )
 
@@ -30,6 +31,7 @@ var (
        heap        *Object
        calls       [20]int
        numobjects  int64
+       memstats    runtime.MemStats
 )
 
 func buildHeap() {
@@ -55,10 +57,10 @@ func buildTree(objsize, size float64, depth int) (*Object, float64) {
 
 func gc() {
        runtime.GC()
-       runtime.UpdateMemStats()
-       pause := runtime.MemStats.PauseTotalNs
-       inuse := runtime.MemStats.Alloc
-       free := runtime.MemStats.TotalAlloc - inuse
+       runtime.ReadMemStats(&memstats)
+       pause := memstats.PauseTotalNs
+       inuse := memstats.Alloc
+       free := memstats.TotalAlloc - inuse
        fmt.Printf("gc pause: %8.3f ms; collect: %8.0f MB; heapsize: %8.0f MB\n",
                float64(pause-lastPauseNs)/1e6,
                float64(free-lastFree)/1048576,
@@ -71,9 +73,9 @@ func main() {
        flag.Parse()
        buildHeap()
        runtime.GOMAXPROCS(*cpus)
-       runtime.UpdateMemStats()
-       lastPauseNs = runtime.MemStats.PauseTotalNs
-       lastFree = runtime.MemStats.TotalAlloc - runtime.MemStats.Alloc
+       runtime.ReadMemStats(&memstats)
+       lastPauseNs = memstats.PauseTotalNs
+       lastFree = memstats.TotalAlloc - memstats.Alloc
        if *cpuprofile != "" {
                f, err := os.Create(*cpuprofile)
                if err != nil {
@@ -82,7 +84,12 @@ func main() {
                pprof.StartCPUProfile(f)
                defer pprof.StopCPUProfile()
        }
-       for i := 0; i < 10; i++ {
+       const N = 10
+       var t0 time.Time
+       for i := 0; i < N; i++ {
+               t0 = time.Now()
                gc()
        }
+       // Standard gotest benchmark output, collected by build dashboard.
+       gcstats("BenchmarkTree2", N, time.Now().Sub(t0))
 }