63 lines
1.2 KiB
Go
63 lines
1.2 KiB
Go
/*
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* Copyright 2020 The Dragonfly Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package synclock
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import (
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"sync"
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"go.uber.org/atomic"
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)
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type countRWMutex struct {
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sync.RWMutex
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count *atomic.Int32
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}
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func newCountRWMutex() *countRWMutex {
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return &countRWMutex{
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count: atomic.NewInt32(0),
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}
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}
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func (cm *countRWMutex) reset() {
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cm.count.CAS(cm.count.Load(), 0)
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}
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func (cm *countRWMutex) inc() int32 {
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return cm.count.Inc()
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}
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func (cm *countRWMutex) dec() int32 {
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return cm.count.Dec()
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}
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func (cm *countRWMutex) lock(rLock bool) {
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if rLock {
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cm.RLock()
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} else {
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cm.Lock()
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}
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}
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func (cm *countRWMutex) unlock(rLock bool) {
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if rLock {
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cm.RUnlock()
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} else {
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cm.Unlock()
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}
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}
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