/
main.go
116 lines (99 loc) · 1.86 KB
/
main.go
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package main
import (
"bufio"
"fmt"
"io"
"os"
"os/exec"
"strings"
"golang.org/x/sync/errgroup"
)
var versions = []string{
"go1.7.6",
"go1.8.7",
"go1.9.7",
"go1.10.8",
"go1.11.13",
"go1.12.17",
"go1.13.15",
"go1.14.15",
"go1.15.15",
"go1.16.15",
"go1.17.13",
"go1.18.10",
"go1.19.12",
"go1.20.7",
"go1.21.0",
}
func main() {
var g errgroup.Group
g.SetLimit(4)
for _, version := range versions {
version := version
// if _, err := exec.LookPath(version); err == nil {
// continue
// }
g.Go(func() error {
fmt.Println("Installing", version)
must0(run("go", "install", "golang.org/dl/"+version+"@latest"))
must0(run(version, "download"))
return nil
})
}
g.Wait()
for _, version := range versions {
fmt.Println("# Benchmarking ", version)
runtee(version+".log", version, "test", "-bench=.", "-count=6", ".")
}
}
func must[T any](v T, err error) T {
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
return v
}
func must0(err error) {
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
func run(cmd string, args ...string) error {
fmt.Println("# ", cmd, strings.Join(args, " "))
x := exec.Command(cmd, args...)
x.Stderr = os.Stderr
x.Stdout = os.Stdout
return x.Run()
}
func runtee(outfile string, cmd string, args ...string) error {
fmt.Println("# ", cmd, strings.Join(args, " "))
x := exec.Command(cmd, args...)
f, err := os.Create(outfile)
if err != nil {
return err
}
defer f.Close()
bf := bufio.NewWriter(f)
defer bf.Flush()
x.Stderr = os.Stderr
x.Stdout = io.MultiWriter(os.Stdout, bf)
return x.Run()
}
/*
#!/bin/bash
declare -a versions=(
)
echo "# Installing Go versions"
for ver in "${versions[@]}"
do
go install "golang.org/dl/${ver}@latest"
${ver} download
done
echo "# Benchmarking"
for ver in "${versions[@]}"
do
$
{ver} test -bench . -count 6 | tee ${ver}.log
done
*/