// not locked for writing on entry to Unlock.
//
// As with Mutexes, a locked [RWMutex] is not associated with a particular
// goroutine. One goroutine may [RWMutex.RLock] ([RWMutex.Lock]) a RWMutex and then
// arrange for another goroutine to [RWMutex.RUnlock] ([RWMutex.Unlock]) it.
func (rw *RWMutex) Unlock() {
	if race.Enabled {
		_ = rw.w.state
		race.Release(unsafe.Pointer(&rw.readerSem))

)

// This is a copy of sync/rwmutex.go rewritten to work in the runtime.

// A rwmutex is a reader/writer mutual exclusion lock.
// The lock can be held by an arbitrary number of readers or a single writer.
// This is a variant of sync.RWMutex, for the runtime package.
// Like mutex, rwmutex blocks the calling M.
// It does not interact with the goroutine scheduler.
type rwmutex struct {

	if err != nil {
		t.Fatal(err)
	}
	fmt.Println(token)

	u1, err := xnet.ParseHTTPURL(server.URL)
	if err != nil {
		t.Fatal(err)
	}

	pubKeys := publicKeys{
		RWMutex: &sync.RWMutex{},
		pkMap:   map[string]interface{}{},
	}
	pubKeys.add("76b95ae5-33ef-4283-97b7-d2a85dc2d8f4", []byte("WNGvKVyyNmXq0TraSvjaDN9CtpFgx35IXtGEffMCPR0"))

	if len(pubKeys.pkMap) != 1 {

package krt

import (
	"sync"

	"istio.io/istio/pkg/ptr"
	"istio.io/istio/pkg/util/sets"
)

// Index maintains a simple index over an informer
type Index[I any, K comparable] struct {
	mu      sync.RWMutex
	objects map[K]sets.Set[Key[I]]
	c       Collection[I]
	extract func(o I) []K
}

// Lookup finds all objects matching a given key
func (i *Index[I, K]) Lookup(k K) []I {
	i.mu.RLock()
	defer i.mu.RUnlock()

type bucketThrottle struct {
	*rate.Limiter
	NodeBandwidthPerSec int64
}

// Monitor holds the state of the global bucket monitor
type Monitor struct {
	tlock sync.RWMutex // mutex for bucket throttling
	mlock sync.RWMutex // mutex for bucket measurement

	bucketsThrottle    map[BucketOptions]*bucketThrottle
	bucketsMeasurement map[BucketOptions]*bucketMeasurement // Buckets with objects in flight

	"k8s.io/kubernetes/pkg/scheduler/framework"
)

// waitingPodsMap a thread-safe map used to maintain pods waiting in the permit phase.
type waitingPodsMap struct {
	pods map[types.UID]*waitingPod
	mu   sync.RWMutex
}

// NewWaitingPodsMap returns a new waitingPodsMap.
func NewWaitingPodsMap() *waitingPodsMap {
	return &waitingPodsMap{
		pods: make(map[types.UID]*waitingPod),
	}
}

// add a new WaitingPod to the map.

}

type TrustAnchorUpdate struct {
	TrustAnchorConfig
	Source Source
}

type TrustBundle struct {
	sourceConfig       map[Source]TrustAnchorConfig
	mutex              sync.RWMutex
	mergedCerts        []string
	updatecb           func()
	endpointMutex      sync.RWMutex
	endpoints          []string
	endpointUpdateChan chan struct{}
	remoteCaCertPool   *x509.CertPool
	meshConfig         mesh.Watcher
}

var (

		UpgradeManifests:                 &metav1.Duration{Duration: constants.UpgradeManifestsTimeout},
	}
}

var (
	activeTimeouts *Timeouts = nil
	timeoutMutex             = &sync.RWMutex{}
)

func init() {
	SetDefaultTimeouts(&activeTimeouts)
}

// GetActiveTimeouts gets the active timeouts structure.
func GetActiveTimeouts() *Timeouts {
	timeoutMutex.RLock()
	defer timeoutMutex.RUnlock()

	"github.com/minio/minio/internal/config/ilm"
)

var globalILMConfig = ilmConfig{
	cfg: ilm.Config{
		ExpirationWorkers: 100,
		TransitionWorkers: 100,
	},
}

type ilmConfig struct {
	mu  sync.RWMutex
	cfg ilm.Config
}

func (c *ilmConfig) getExpirationWorkers() int {
	c.mu.RLock()
	defer c.mu.RUnlock()

	return c.cfg.ExpirationWorkers
}

func (c *ilmConfig) getTransitionWorkers() int {

			return features.EnableEnvoyFilterMetrics
		}),
	)
)

var (
	envoyFilterStatusMap = map[string]map[string]bool{} // Map of Envoy filter name, patch and status.
	envoyFilterMutex     sync.RWMutex
)

// IncrementEnvoyFilterMetric increments filter metric.
func IncrementEnvoyFilterMetric(name string, pt PatchType, applied bool) {
	if !features.EnableEnvoyFilterMetrics {
		return
	}
	envoyFilterMutex.Lock()