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37 lines
662 B
Markdown
37 lines
662 B
Markdown
---
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date: 20200918
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id: 56a802e2-3871-4746-aec4-fa4bdae4d4fd
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title: Golang Mutex
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---
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# Description
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[Mutex](https://golang.org/pkg/sync/#Mutex) allows up to add locks to
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our data so it can be accessed safely in a concurrent manner. While
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locked other threads can't access the data. `Mutexes` should generally
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be used for [managing
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state](https://github.com/golang/go/wiki/MutexOrChannel).
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# Syntax
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``` go
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type Counter struct {
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mu sync.Mutex
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value int
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}
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func (c *Counter) Inc() {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.value++
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}
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func (c *Counter) Value() int {
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return c.value
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}
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func NewCounter() *Counter {
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return &Counter{}
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}
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```
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