need := len(buf)         // number of bytes requested by caller
	hdr := r.opts.HeaderSize // remaining header bytes
	var tokens int           // number of tokens to request

	if hdr > 0 { // available tokens go towards header first
		if hdr < b { // all of header can be accommodated
			r.opts.HeaderSize = 0
			need = int(math.Min(float64(b-hdr), float64(need))) // use remaining tokens towards payload
			tokens = need + hdr

// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Addr2line is a minimal simulation of the GNU addr2line tool,
// just enough to support pprof.
//
// Usage:
//
//	go tool addr2line binary
//
// Addr2line reads hexadecimal addresses, one per line and with optional 0x prefix,

package cmd

import (
	"context"
	"fmt"
	"net/url"
	"runtime"
	"sort"
	"time"

	"github.com/minio/dperf/pkg/dperf"
	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/auth"
	xioutil "github.com/minio/minio/internal/ioutil"
)

const speedTest = "speedtest"

type speedTestOpts struct {
	objectSize       int
	concurrencyStart int

	if len(pdb.Stmts.Keys()) != 0 {
		t.Fatalf("prepared stmt should be empty")
	}
}

func isUsingClosedConnError(err error) bool {
	// https://github.com/golang/go/blob/e705a2d16e4ece77e08e80c168382cdb02890f5b/src/database/sql/sql.go#L2717
	return err.Error() == "sql: statement is closed"
}

// TestPreparedStmtConcurrentClose test calling close and executing SQL concurrently

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Parse input AST and prepare Prog structure.

package main

import (
	"fmt"
	"go/ast"
	"go/format"
	"go/parser"
	"go/scanner"
	"go/token"
	"os"
	"strings"
)

func parse(name string, src []byte, flags parser.Mode) *ast.File {

// Module misc contains binaries that pertain to specific platforms
// (Android, iOS, and WebAssembly), as well as some miscellaneous
// tests and tools.
module misc

// go.mod and go.sum files are needed for the go tool modules queries,
// and the testdata directories for tests.  It is common for tests to
// reach out into testdata from parent packages.
func adbCopyTree(deviceCwd, subdir string) error {
	dir := ""
	for {
		for _, name := range []string{"testdata", "go.mod", "go.sum"} {
			hostPath := filepath.Join(dir, name)
			if _, err := os.Stat(hostPath); err != nil {

	}
	return key
}

// replayItems - Reads the items from the store and replays.
func replayItems[I any](store Store[I], doneCh <-chan struct{}, log logger, id string) <-chan Key {
	keyCh := make(chan Key)

	go func() {
		defer xioutil.SafeClose(keyCh)

		retryTicker := time.NewTicker(retryInterval)
		defer retryTicker.Stop()

		for {
			for _, key := range store.List() {
				select {
				case keyCh <- key:

	buf := make([]byte, 512)

	go func() {
		for {
			rb.Read(buf)
		}
	}()

	for b.Loop() {
		rb.Write(data)
	}
}

func BenchmarkRingBuffer_AsyncReadBlocking(b *testing.B) {
	const sz = 512
	const buffers = 10
	rb := New(sz * buffers)
	rb.SetBlocking(true)
	data := []byte(strings.Repeat("a", sz))
	buf := make([]byte, sz)

	go func() {
		for {
			rb.Read(buf)
		}
	}()

	// See golang.org/issue/7856
	r := NewReader([]byte{})
	var wg sync.WaitGroup
	for i := 0; i < 5; i++ {
		wg.Add(2)
		go func() {
			defer wg.Done()
			var buf [1]byte
			r.Read(buf[:])
		}()
		go func() {
			defer wg.Done()
			r.Read(nil)
		}()
	}
	wg.Wait()
}

func TestReaderWriteTo(t *testing.T) {
	for i := 0; i < 30; i += 3 {
		var l int