)

// MultiValueMap represents a map where each key might be associated with
// multiple values.
type MultiValueMap map[string]sets.String

// Insert adds given (key, value) pair into the map.
func (m MultiValueMap) Insert(key, value string) MultiValueMap {
	sets.InsertOrNew(m, key, value)
	return m
}

// Delete removes given (key, value) pair out of the map.

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package pprof

import "unsafe"

// A profMap is a map from (stack, tag) to mapEntry.
// It grows without bound, but that's assumed to be OK.
type profMap struct {
	hash    map[uintptr]*profMapEntry
	all     *profMapEntry
	last    *profMapEntry
	free    []profMapEntry
	freeStk []uintptr
}

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import "runtime"

type T [10]int

var m map[*T]int

//go:noinline
func F() {
	m = map[*T]int{
		K(): V(), // the key temp should be live across call to V
	}
}

//go:noinline
func V() int { runtime.GC(); runtime.GC(); runtime.GC(); return 123 }

//go:noinline

	t := n.Type()
	hmapType := reflectdata.MapType()
	hint := n.Len

	// var h *hmap
	var h ir.Node
	if n.Esc() == ir.EscNone {
		// Allocate hmap on stack.

		// var hv hmap
		// h = &hv
		h = stackTempAddr(init, hmapType)

		// Allocate one bucket pointed to by hmap.buckets on stack if hint
		// is not larger than BUCKETSIZE. In case hint is larger than

Shinsuke Sugaya <******@****.***> 1553287182 +0900

// Source: ../../cmd/compile/internal/types2/map.go

// Copyright 2011 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.

package types

// A Map represents a map type.
type Map struct {
	key, elem Type
}

// NewMap returns a new map for the given key and element types.
func NewMap(key, elem Type) *Map {
	return &Map{key: key, elem: elem}
}

package config

import (
	"fmt"

	"istio.io/istio/pkg/test/scopes"
)

type Map map[string]any

func (m Map) Map(key string) Map {
	nested, ok := m[key]
	if !ok {
		return nil
	}
	out, ok := nested.(Map)
	if !ok {
		return nil
	}
	return out
}

func (m Map) String(key string) string {
	v, ok := m[key]
	if !ok || v == nil {
		return ""
	}
	str, ok := v.(string)

}

func concurrentMapWrites() {
	m := map[int]int{}
	c := make(chan struct{})
	go func() {
		for i := 0; i < 10000; i++ {
			m[5] = 0
			runtime.Gosched()
		}
		c <- struct{}{}
	}()
	go func() {
		for i := 0; i < 10000; i++ {
			m[6] = 0
			runtime.Gosched()
		}
		c <- struct{}{}
	}()
	<-c
	<-c
}

func concurrentMapReadWrite() {
	m := map[int]int{}
	c := make(chan struct{})

// The zero Map is empty and ready for use. A Map must not be copied after first use.
//
// In the terminology of [the Go memory model], Map arranges that a write operation
// “synchronizes before” any read operation that observes the effect of the write, where
// read and write operations are defined as follows.
// [Map.Load], [Map.LoadAndDelete], [Map.LoadOrStore], [Map.Swap], [Map.CompareAndSwap],
// and [Map.CompareAndDelete] are read operations;

	mss := make(map[string]string)
	mspa := make(map[string][]string)
	// BUG need an interface map both ways too

	type T struct {
		i int64 // can't use string here; struct values are only compared at the top level
		f float32
	}
	mipT := make(map[int]*T)
	mpTi := make(map[*T]int)
	mit := make(map[int]T)
	//	mti := make(map[T] int)

	type M map[int]int
	mipM := make(map[int]M)

	var apT [2 * count]*T