69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
// Package easylock ...
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//
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// Description : 分段的锁
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 2021-02-24 10:44 下午
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package easylock
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import "git.zhangdeman.cn/zhangdeman/util"
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// NewSegment 获取分段锁
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 11:20 下午 2021/2/24
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func NewSegment(segmentCnt int) (EasyLock, error) {
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if segmentCnt <= 0 {
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return nil, segmentError()
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}
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s := &segment{
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lockTable: make([]EasyLock, segmentCnt),
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segmentCnt: segmentCnt,
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lockCnt: &LockCnt{
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Write: 0,
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Read: 0,
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},
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}
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for i := 0; i < segmentCnt; i++ {
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s.lockTable[i] = NewLock()
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}
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return s, nil
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}
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type segment struct {
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lockTable []EasyLock
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segmentCnt int
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lockCnt *LockCnt
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base
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}
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func (s *segment) Lock(optionFuncList ...OptionFunc) error {
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defer s.AddRLockCnt(s.lockCnt)
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o := s.ParseOption(optionFuncList...)
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return s.lockTable[util.Hash.GetHashIDMod(o.flag, s.segmentCnt)].Lock()
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}
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func (s *segment) Unlock(optionFuncList ...OptionFunc) error {
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defer s.DecreaseLockCnt(s.lockCnt)
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o := s.ParseOption(optionFuncList...)
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return s.lockTable[util.Hash.GetHashIDMod(o.flag, s.segmentCnt)].Unlock()
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}
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func (s *segment) RLock(optionFuncList ...OptionFunc) error {
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defer s.AddRLockCnt(s.lockCnt)
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o := s.ParseOption(optionFuncList...)
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return s.lockTable[util.Hash.GetHashIDMod(o.flag, s.segmentCnt)].RLock()
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}
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func (s *segment) RUnlock(optionFuncList ...OptionFunc) error {
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defer s.DecreaseRLockCnt(s.lockCnt)
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o := s.ParseOption(optionFuncList...)
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return s.lockTable[util.Hash.GetHashIDMod(o.flag, s.segmentCnt)].RUnlock()
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}
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func (s *segment) GetLockCnt() *LockCnt {
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return s.lockCnt
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}
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