github.com/dolthub/dolt/go@v0.40.5-0.20240520175717-68db7794bea6/performance/kvbench/mem_store.go (about) 1 // Copyright 2021 Dolthub, Inc. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package kvbench 16 17 import "sync" 18 19 type keyValStore interface { 20 get(key []byte) (val []byte, ok bool) 21 put(key, val []byte) 22 putMany(keys, vals [][]byte) 23 delete(key []byte) 24 } 25 26 type flushingKeyValStore interface { 27 keyValStore 28 flush() 29 } 30 31 type orderedKeyValStore interface { 32 keyValStore 33 getRange(low, hi []byte) (vals [][]byte) 34 deleteRange(low, hi []byte) 35 } 36 37 func newMemStore() keyValStore { 38 return memStore{ 39 store: make(map[string][]byte), 40 mu: &sync.RWMutex{}, 41 } 42 } 43 44 type memStore struct { 45 store map[string][]byte 46 mu *sync.RWMutex 47 } 48 49 var _ keyValStore = memStore{} 50 51 func (m memStore) get(key []byte) (val []byte, ok bool) { 52 m.mu.RLock() 53 defer m.mu.RUnlock() 54 55 val, ok = m.store[string(key)] 56 return val, ok 57 } 58 59 func (m memStore) put(key, val []byte) { 60 m.mu.Lock() 61 defer m.mu.Unlock() 62 63 m.store[string(key)] = val 64 } 65 66 func (m memStore) putMany(keys, vals [][]byte) { 67 m.mu.Lock() 68 defer m.mu.Unlock() 69 70 for i := range keys { 71 m.store[string(keys[i])] = vals[i] 72 } 73 } 74 75 func (m memStore) delete(key []byte) { 76 m.mu.Lock() 77 defer m.mu.Unlock() 78 79 delete(m.store, string(key)) 80 }