// Copyright 2022 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.

// Support for test coverage with redesigned coverage implementation.

package testing

import (
	"fmt"
	"internal/goexperiment"
	"os"
	_ "unsafe" // for linkname
)

// cover2 variable stores the current coverage mode and a

	if uintptr(v)&(physPageSize-1) != 0 {
		// The Linux implementation requires that the address
		// addr be page-aligned, and allows length to be zero.
		throw("unaligned sysNoHugePageOS")
	}
	madvise(v, n, _MADV_NOHUGEPAGE)
}

func sysHugePageCollapseOS(v unsafe.Pointer, n uintptr) {
	if uintptr(v)&(physPageSize-1) != 0 {
		// The Linux implementation requires that the address

package hash

import "io"

// Hash is the common interface implemented by all hash functions.
//
// Hash implementations in the standard library (e.g. [hash/crc32] and
// [crypto/sha256]) implement the [encoding.BinaryMarshaler] and
// [encoding.BinaryUnmarshaler] interfaces. Marshaling a hash implementation
// allows its internal state to be saved and used for additional processing

	Range(func(key, value any) (shouldContinue bool))
	Clear()
}

var (
	_ mapInterface = &RWMutexMap{}
	_ mapInterface = &DeepCopyMap{}
)

// RWMutexMap is an implementation of mapInterface using a sync.RWMutex.
type RWMutexMap struct {
	mu    sync.RWMutex
	dirty map[any]any
}

func (m *RWMutexMap) Load(key any) (value any, ok bool) {
	m.mu.RLock()
	value, ok = m.dirty[key]

type BucketOptions struct {
	Name           string
	ReplicationARN string // This is optional, and not mandatory.
}

// MonitorReaderOptions provides configurable options for monitor reader implementation.
type MonitorReaderOptions struct {
	BucketOptions
	HeaderSize int
}

// Read implements a throttled read
func (r *MonitoredReader) Read(buf []byte) (n int, err error) {
	if r.throttle == nil {

type KMSLogger struct{}

// LogOnceIf is the implementation of LogOnceIf, accessible using the Logger interface
func (l KMSLogger) LogOnceIf(ctx context.Context, err error, id string, errKind ...interface{}) {
	logger.LogOnceIf(ctx, "kms", err, id, errKind...)
}

// LogIf is the implementation of LogIf, accessible using the Logger interface

// it makes sure that a block on a channel send that unblocks briefly only to
// immediately go back to sleep (in such a way that doesn't reveal any useful
// information, and is purely an artifact of the runtime implementation) doesn't
// make it into the trace.

//go:build ignore

package main

import (
	"context"
	"log"
	"os"
	"runtime"
	"runtime/trace"
	"sync"
)

func main() {

	Version  string             `json:"version"`
	Entries  ClaimInfoStateList `json:"entries,omitempty"`
	Checksum checksum.Checksum  `json:"checksum"`
}

// DraManagerCheckpoint struct is an old implementation of the DraManagerCheckpoint
type DRAManagerCheckpointWithoutResourceHandles struct {
	Version  string                                   `json:"version"`

	return p
}

// wbBufFlush flushes the current P's write barrier buffer to the GC
// workbufs.
//
// This must not have write barriers because it is part of the write
// barrier implementation.
//
// This and everything it calls must be nosplit because 1) the stack
// contains untyped slots from gcWriteBarrier and 2) there must not be
// a GC safe point between the write barrier test in the caller and

	ak, ok := any(a).(Equaler[O])
	if ok {
		return ak.Equals(b)
	}
	pk, ok := any(&a).(Equaler[O])
	if ok {
		return pk.Equals(b)
	}
	// Future improvement: add a default Kubernetes object implementation
	// ResourceVersion is tempting but probably not safe. If we are comparing objects from the API server its fine,
	// but often we will be operating on types generated by the controller itself.