go runtime_error ai_generated true

fatal error: 所有 goroutine 都休眠了 - 死锁！（从已关闭的 channel 接收）

fatal error: all goroutines are asleep - deadlock! (receive from closed channel)

ID: go/channel-receive-from-closed-channel-ok

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80%修复率
90%置信度
0证据数
2024-05-20首次发现

版本兼容性

版本状态引入弃用备注
1.0+ active — — —

根因分析

某个 goroutine 阻塞在从已关闭且为空的 channel 接收数据，而其他 goroutine 也处于阻塞状态，导致死锁。

English

A goroutine is blocked receiving from a channel that is closed and empty, but other goroutines are also blocked, leading to a deadlock.

generic

解决方案

  1. 95% 成功率 
    v, ok := <-ch
if !ok {
    return
}
  2. 98% 成功率 
    for v := range ch {
    // process v
}

无效尝试

常见但无效的做法:

  1. 95% 失败

    Sleep does not unblock a deadlock; it only delays the inevitable fatal error

  2. 90% 失败

    The deadlock is logical, not related to parallelism