From 6c7d6f761bd656cb1978e62bc48df8f9a4763a23 Mon Sep 17 00:00:00 2001
From: "M. J. Fromberger" <fromberger@interchain.io>
Date: Fri, 5 Nov 2021 03:31:06 -0700
Subject: [PATCH] Remove unused libs/cmap. (#7245)

A follow-up to #7197.
---
 libs/cmap/cmap.go      |  91 ---------------------------------
 libs/cmap/cmap_test.go | 113 -----------------------------------------
 2 files changed, 204 deletions(-)
 delete mode 100644 libs/cmap/cmap.go
 delete mode 100644 libs/cmap/cmap_test.go

diff --git a/libs/cmap/cmap.go b/libs/cmap/cmap.go
deleted file mode 100644
index 5aa82e807..000000000
--- a/libs/cmap/cmap.go
+++ /dev/null
@@ -1,91 +0,0 @@
-package cmap
-
-import (
-	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
-)
-
-// CMap is a goroutine-safe map
-type CMap struct {
-	m map[string]interface{}
-	l tmsync.Mutex
-}
-
-func NewCMap() *CMap {
-	return &CMap{
-		m: make(map[string]interface{}),
-	}
-}
-
-func (cm *CMap) Set(key string, value interface{}) {
-	cm.l.Lock()
-	cm.m[key] = value
-	cm.l.Unlock()
-}
-
-// GetOrSet returns the existing value if present. Othewise, it stores `newValue` and returns it.
-func (cm *CMap) GetOrSet(key string, newValue interface{}) (value interface{}, alreadyExists bool) {
-
-	cm.l.Lock()
-	defer cm.l.Unlock()
-
-	if v, ok := cm.m[key]; ok {
-		return v, true
-	}
-
-	cm.m[key] = newValue
-	return newValue, false
-}
-
-func (cm *CMap) Get(key string) interface{} {
-	cm.l.Lock()
-	val := cm.m[key]
-	cm.l.Unlock()
-	return val
-}
-
-func (cm *CMap) Has(key string) bool {
-	cm.l.Lock()
-	_, ok := cm.m[key]
-	cm.l.Unlock()
-	return ok
-}
-
-func (cm *CMap) Delete(key string) {
-	cm.l.Lock()
-	delete(cm.m, key)
-	cm.l.Unlock()
-}
-
-func (cm *CMap) Size() int {
-	cm.l.Lock()
-	size := len(cm.m)
-	cm.l.Unlock()
-	return size
-}
-
-func (cm *CMap) Clear() {
-	cm.l.Lock()
-	cm.m = make(map[string]interface{})
-	cm.l.Unlock()
-}
-
-func (cm *CMap) Keys() []string {
-	cm.l.Lock()
-
-	keys := make([]string, 0, len(cm.m))
-	for k := range cm.m {
-		keys = append(keys, k)
-	}
-	cm.l.Unlock()
-	return keys
-}
-
-func (cm *CMap) Values() []interface{} {
-	cm.l.Lock()
-	items := make([]interface{}, 0, len(cm.m))
-	for _, v := range cm.m {
-		items = append(items, v)
-	}
-	cm.l.Unlock()
-	return items
-}
diff --git a/libs/cmap/cmap_test.go b/libs/cmap/cmap_test.go
deleted file mode 100644
index 68a052bdb..000000000
--- a/libs/cmap/cmap_test.go
+++ /dev/null
@@ -1,113 +0,0 @@
-package cmap
-
-import (
-	"fmt"
-	"strings"
-	"sync"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestIterateKeysWithValues(t *testing.T) {
-	cmap := NewCMap()
-
-	for i := 1; i <= 10; i++ {
-		cmap.Set(fmt.Sprintf("key%d", i), fmt.Sprintf("value%d", i))
-	}
-
-	// Testing size
-	assert.Equal(t, 10, cmap.Size())
-	assert.Equal(t, 10, len(cmap.Keys()))
-	assert.Equal(t, 10, len(cmap.Values()))
-
-	// Iterating Keys, checking for matching Value
-	for _, key := range cmap.Keys() {
-		val := strings.ReplaceAll(key, "key", "value")
-		assert.Equal(t, val, cmap.Get(key))
-	}
-
-	// Test if all keys are within []Keys()
-	keys := cmap.Keys()
-	for i := 1; i <= 10; i++ {
-		assert.Contains(t, keys, fmt.Sprintf("key%d", i), "cmap.Keys() should contain key")
-	}
-
-	// Delete 1 Key
-	cmap.Delete("key1")
-
-	assert.NotEqual(
-		t,
-		len(keys),
-		len(cmap.Keys()),
-		"[]keys and []Keys() should not be equal, they are copies, one item was removed",
-	)
-}
-
-func TestContains(t *testing.T) {
-	cmap := NewCMap()
-
-	cmap.Set("key1", "value1")
-
-	// Test for known values
-	assert.True(t, cmap.Has("key1"))
-	assert.Equal(t, "value1", cmap.Get("key1"))
-
-	// Test for unknown values
-	assert.False(t, cmap.Has("key2"))
-	assert.Nil(t, cmap.Get("key2"))
-}
-
-func BenchmarkCMapHas(b *testing.B) {
-	m := NewCMap()
-	for i := 0; i < 1000; i++ {
-		m.Set(string(rune(i)), i)
-	}
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		m.Has(string(rune(i)))
-	}
-}
-
-func TestCMap_GetOrSet_Parallel(t *testing.T) {
-
-	tests := []struct {
-		name        string
-		newValue    interface{}
-		parallelism int
-	}{
-		{"test1", "a", 4},
-		{"test2", "a", 40},
-		{"test3", "a", 1},
-	}
-
-	//nolint:scopelint
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			cm := NewCMap()
-
-			wg := sync.WaitGroup{}
-			wg.Add(tt.parallelism)
-			for i := 0; i < tt.parallelism; i++ {
-				go func() {
-					defer wg.Done()
-					gotValue, _ := cm.GetOrSet(tt.name, tt.newValue)
-					assert.EqualValues(t, tt.newValue, gotValue)
-				}()
-			}
-			wg.Wait()
-		})
-	}
-}
-
-func TestCMap_GetOrSet_Exists(t *testing.T) {
-	cm := NewCMap()
-
-	gotValue, exists := cm.GetOrSet("key", 1000)
-	assert.False(t, exists)
-	assert.EqualValues(t, 1000, gotValue)
-
-	gotValue, exists = cm.GetOrSet("key", 2000)
-	assert.True(t, exists)
-	assert.EqualValues(t, 1000, gotValue)
-}