gmlock

内存锁模块，也称之为动态互斥锁模块，支持按照给定键名动态生成互斥锁，并发安全并支持Try*Lock特性。

...

func Lock(key string)
func LockFunc(key string, f func())
func RLock(key string)
func RLockFunc(key string, f func())
func RUnlock(key string)
func Remove(key string)
func TryLock(key string) bool
func TryLockFunc(key string, f func()) bool
func TryRLock(key string) bool
func TryRLockFunc(key string, f func()) bool
func Unlock(key string)
type Locker
    func New() *Locker
    func (l *Locker) Clear()
    func (l *Locker) Lock(key string)
    func (l *Locker) LockFunc(key string, f func())
    func (l *Locker) RLock(key string)
    func (l *Locker) RLockFunc(key string, f func())
    func (l *Locker) RUnlock(key string)
    func (l *Locker) Remove(key string)
    func (l *Locker) TryLock(key string) bool
    func (l *Locker) TryLockFunc(key string, f func()) bool
    func (l *Locker) TryRLock(key string) bool
    func (l *Locker) TryRLockFunc(key string, f func()) bool
    func (l *Locker) Unlock(key string)

示例1，基本使用

package main

import (
    "time"
    "sync"
    "github.com/gogf/gf/os/glog"
    "github.com/gogf/gf/os/gmlock"
)

func main() {
    key := "lock"
    wg  := sync.WaitGroup{}
    for i := 0; i < 10; i++ {
        wg.Add(1)
        go func(i int) {
            gmlock.Lock(key)
            glog.Println(i)
            time.Sleep(time.Second)
            gmlock.Unlock(key)
            wg.Done()
        }(i)
    }
    wg.Wait()
}

...

2018-10-15 23:57:28.295 9
2018-10-15 23:57:29.296 0
2018-10-15 23:57:30.296 1
2018-10-15 23:57:31.296 2
2018-10-15 23:57:32.296 3
2018-10-15 23:57:33.297 4
2018-10-15 23:57:34.297 5
2018-10-15 23:57:35.297 6
2018-10-15 23:57:36.298 7
2018-10-15 23:57:37.298 8

示例2，TryLock非阻塞锁

TryLock方法是有返回值的，它表示用来尝试获取锁，如果获取成功，则返回true；如果获取失败（即互斥锁已被其他goroutine获取），则返回false。

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