| package threadsafe |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import ( |
| "sync" |
| |
| "github.com/apache/trafficcontrol/traffic_monitor/cache" |
| ) |
| |
| // CacheKbpses wraps a map of cache kbps measurements to be safe for multiple |
| // reader goroutines and one writer. |
| type CacheKbpses struct { |
| v *cache.Kbpses |
| m *sync.RWMutex |
| } |
| |
| // NewCacheKbpses creates and returns a new, empty CacheKbpses, |
| // initializing internal pointer values. |
| func NewCacheKbpses() CacheKbpses { |
| v := cache.Kbpses{} |
| return CacheKbpses{m: &sync.RWMutex{}, v: &v} |
| } |
| |
| // Get returns the internal map of cache kbps measurements. The returned map |
| // MUST NOT be modified. If modification is necessary, copy. |
| func (o *CacheKbpses) Get() cache.Kbpses { |
| o.m.RLock() |
| defer o.m.RUnlock() |
| return *o.v |
| } |
| |
| // Set sets the internal map of cache kbps measurements. This MUST NOT be called |
| // by multiple goroutines. |
| func (o *CacheKbpses) Set(v cache.Kbpses) { |
| o.m.Lock() |
| *o.v = v |
| o.m.Unlock() |
| } |