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// Copyright 2020 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package harness holds utility code for running benchmarks on Docker.
package harness
import (
"flag"
"fmt"
"os"
"gvisor.dev/gvisor/pkg/test/dockerutil"
)
var (
help = flag.Bool("help", false, "print this usage message")
debug = flag.Bool("debug", false, "turns on debug messages for individual benchmarks")
)
// Init performs any harness initilialization before runs.
func Init() error {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: %s -- --test.bench=<regex>\n", os.Args[0])
flag.PrintDefaults()
}
flag.Parse()
if *help {
flag.Usage()
os.Exit(0)
}
dockerutil.EnsureSupportedDockerVersion()
return nil
}
// SetFixedBenchmarks causes all benchmarks to run once.
//
// This must be set if they cannot scale with N. Note that this uses 1ns
// instead of 1x due to https://github.com/golang/go/issues/32051.
func SetFixedBenchmarks() {
flag.Set("test.benchtime", "1ns")
}
// GetMachine returns this run's implementation of machine.
func GetMachine() (Machine, error) {
return &localMachine{}, nil
}
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