mirror of https://github.com/fatedier/frp
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.3 KiB
61 lines
1.3 KiB
// Copyright 2017 fatedier, fatedier@gmail.com
|
|
//
|
|
// Licensed 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.
|
|
|
|
package metric
|
|
|
|
import (
|
|
"sync/atomic"
|
|
)
|
|
|
|
type Counter interface {
|
|
Count() int64
|
|
Inc(int64)
|
|
Dec(int64)
|
|
Snapshot() Counter
|
|
Clear()
|
|
}
|
|
|
|
func NewCounter() Counter {
|
|
return &StandardCounter{
|
|
count: 0,
|
|
}
|
|
}
|
|
|
|
type StandardCounter struct {
|
|
count int64
|
|
}
|
|
|
|
func (c *StandardCounter) Count() int64 {
|
|
return atomic.LoadInt64(&c.count)
|
|
}
|
|
|
|
func (c *StandardCounter) Inc(count int64) {
|
|
atomic.AddInt64(&c.count, count)
|
|
}
|
|
|
|
func (c *StandardCounter) Dec(count int64) {
|
|
atomic.AddInt64(&c.count, -count)
|
|
}
|
|
|
|
func (c *StandardCounter) Snapshot() Counter {
|
|
tmp := &StandardCounter{
|
|
count: atomic.LoadInt64(&c.count),
|
|
}
|
|
return tmp
|
|
}
|
|
|
|
func (c *StandardCounter) Clear() {
|
|
atomic.StoreInt64(&c.count, 0)
|
|
}
|