go resource_error ai_generated true

致命错误：运行时：内存不足（定时器通道泄漏）

fatal error: runtime: out of memory (timer channel leak)

ID: go/goroutine-timer-channel-leak

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80%修复率
84%置信度
0证据数
2025-01-15首次发现

版本兼容性

版本状态引入弃用备注
1.20 active — — —
1.21 active — — —

根因分析

创建大量 time.Timer 或 time.Ticker 而不停止它们，导致协程和通道泄漏，耗尽内存。

English

Creating many time.Timer or time.Ticker without stopping them, causing goroutine and channel leaks that exhaust memory.

generic

解决方案

  1. 95% 成功率 Always stop timers after use with defer. 
    timer := time.NewTimer(1 * time.Second)
defer timer.Stop()
select {
case <-timer.C:
    // do something
}
  2. 90% 成功率 Use time.NewTicker and stop it when done. 
    ticker := time.NewTicker(1 * time.Second)
defer ticker.Stop()
for range ticker.C {
    // periodic work
    if condition {
        break
    }
}

无效尝试

常见但无效的做法:

  1. Using time.After in a loop without resetting. 90% 失败

    Each call to time.After creates a new timer; if not stopped, they accumulate.

  2. Assuming timers are garbage collected after firing. 80% 失败

    Timers are not GC'd until they fire or are stopped; if not stopped, they remain in memory.