import (
	"context"

	api "go.opentelemetry.io/otel/metric"

	"istio.io/istio/pkg/log"
)

type counter struct {
	baseMetric
	c api.Float64Counter
	// precomputedAddOption is just a precomputation to avoid allocations on each record call
	precomputedAddOption []api.AddOption
}

var _ Metric = &counter{}

func newCounter(o options) *counter {
	c, err := meter().Float64Counter(o.name,
		api.WithDescription(o.description),

// run

// Copyright 2015 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.

// Test that tiny allocations with finalizers are correctly profiled.
// Previously profile special records could have been processed prematurely
// (while the object is still live).

package main

import (
	"runtime"
	"time"
	"unsafe"
)

func main() {

//
//   - ASSIGNABLE: Equal to SHARED - RESERVED. Exclusive CPUs are allocated
//     from this pool.
//
//   - EXCLUSIVE ALLOCATIONS: CPU sets assigned exclusively to one container.
//     These are stored as explicit assignments in the state.
//
// When an exclusive allocation is made, the static policy also updates the
// default cpuset in the state abstraction. The CPU manager's periodic

 *
 * This type will ensure that all contents are immutable upon construction,
 * in order to allow instances of this type to be safely reused whenever possible
 * to avoid unnecessary memory allocations.
 *
 * Note that while this class is not itself {@code final}, all fields are private, so
 * subclassing should not break the immutability contract.
 */
public class ImmutableCapabilities {

	SDSDefaultResourceName = "default"

	// SDSRootResourceName is the sdsconfig name for root CA, used for fetching root cert.
	SDSRootResourceName = "ROOTCA"
)

// Preconfigured SDS configs to avoid excessive memory allocations
var (
	defaultSDSConfig = &tls.SdsSecretConfig{
		Name: SDSDefaultResourceName,
		SdsConfig: &core.ConfigSource{
			ConfigSourceSpecifier: &core.ConfigSource_ApiConfigSource{
				ApiConfigSource: &core.ApiConfigSource{

// TODO: fields are not labels, and the validation rules for them do not apply.
func toSelectableFields(slice *resource.ResourceSlice) fields.Set {
	// The purpose of allocation with a given number of elements is to reduce
	// amount of allocations needed to create the fields.Set. If you add any
	// field here or the number of object-meta related fields changes, this should
	// be adjusted.
	fields := make(fields.Set, 3)

	}
	c.cache.Set(keyFunc(dataCtx), transformer, c.ttl)
}

func keyFunc(dataCtx value.Context) string {
	return toString(dataCtx.AuthenticatedData())
}

// toString performs unholy acts to avoid allocations
func toString(b []byte) string {
	// unsafe.SliceData relies on cap whereas we want to rely on len
	if len(b) == 0 {
		return ""
	}
	// Copied from go 1.20.1 strings.Builder.String

		})
	}
	b.build()
	return nil
}

// scaleHeapSample adjusts the data from a heap Sample to
// account for its probability of appearing in the collected
// data. heap profiles are a sampling of the memory allocations
// requests in a program. We estimate the unsampled value by dividing
// each collected sample by its probability of appearing in the
// profile. heap profiles rely on a poisson process to determine

// SEC 1, Version 2.0, Section 2.3.3. Note that the encoding of the point at
// infinity is shorter than all other encodings.
func (p *P256Point) Bytes() []byte {
	// This function is outlined to make the allocations inline in the caller
	// rather than happen on the heap.
	var out [1 + 2*p256ElementLength]byte
	return p.bytes(&out)
}

func (p *P256Point) bytes(out *[1 + 2*p256ElementLength]byte) []byte {

      + timeSeries.standardOptions.withUnit('bytes'),

    bytesRate(title, targets, desc=''):
      self.base(title, targets, desc)
      + timeSeries.standardOptions.withUnit('Bps'),

    allocations(title, targets, desc=''):
      self.base(title, targets, desc)
      + timeSeries.standardOptions.withUnit('Bps')
      + timeSeries.standardOptions.withOverrides([
        fieldOverride.byQuery.new('B')