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Merge pull request #537 from xiaoliwang/fix1

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Go 1.14 调度调整，对附录中的一个特性进行补充说明
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Xargin 2021-04-27 15:33:11 +08:00 committed by GitHub
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appendix/appendix-a-trap.md
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@ -146,7 +146,7 @@ func main() {
## 独占CPU导致其它Goroutine饿死 ## 独占CPU导致其它Goroutine饿死
Goroutine是协作式抢占调度，Goroutine本身不会主动放弃CPU： Goroutine 是协作式抢占调度（Go1.14版本之前），Goroutine本身不会主动放弃CPU：
```go ```go
func main() { func main() {
@ -197,6 +197,8 @@ func main() {
} }
``` ```
Go1.14 版本引入基于系统信号的异步抢占调度，可以避免 Goroutine 饿死的情况。
## 不同Goroutine之间不满足顺序一致性内存模型 ## 不同Goroutine之间不满足顺序一致性内存模型
因为在不同的Goroutine，main函数中无法保证能打印出`hello, world`: 因为在不同的Goroutine，main函数中无法保证能打印出`hello, world`: