为什么swow可以pcntl_fork，swoole不行？

he426100 commented 1 year ago

Please answer these questions before submitting your issue.

What did you do? If possible, provide a simple script for reproducing the error. 做了个小的命令行程序，引入了psy/psysh，发现跟swoole有冲突，如果用\Swoole\Coroutine\run包裹入口的话psysh用不了，会提示pcntl_fork() has been disabled
What did you expect to see? 期望像swow下那样正常使用
What did you see instead? pcntl_fork() has been disabled
What version of Swoole are you using (show your php --ri swoole)?
```
swoole
```

Swoole => enabled Author => Swoole Team team@swoole.com Version => 5.0.1 Built => Nov 8 2022 11:11:46 coroutine => enabled with boost asm context epoll => enabled eventfd => enabled signalfd => enabled cpu_affinity => enabled spinlock => enabled rwlock => enabled sockets => enabled openssl => OpenSSL 1.1.1m 14 Dec 2021 dtls => enabled http2 => enabled json => enabled curl-native => enabled c-ares => 1.18.1 zlib => 1.2.11 mutex_timedlock => enabled pthread_barrier => enabled futex => enabled mysqlnd => enabled async_redis => enabled

Directive => Local Value => Master Value swoole.enable_coroutine => On => On swoole.enable_library => On => On swoole.enable_preemptive_scheduler => Off => Off swoole.display_errors => On => On swoole.use_shortname => On => On swoole.unixsock_buffer_size => 8388608 => 8388608



5. What is your machine environment used (show your `uname -a` & `php -v` & `gcc -v`) ?
`Linux mrpzx 5.15.79.1-microsoft-standard-WSL2 #1 SMP Wed Nov 23 01:01:46 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux`
`Swoole 5.0.1 (cli) (built: Nov  8 2022 11:12:59) (NTS)`

NathanFreeman commented 1 year ago

因为fork一个多线程结果是不安全的

twose commented 1 year ago

因为libuv支持fork，但也是实验性的，只能覆盖一般的fork情况，建议用proc_open来开启和管理新的进程。

he426100 commented 1 year ago

因为libuv支持fork，但也是实验性的，只能覆盖一般的fork情况，建议用proc_open来开启和管理新的进程。

好的，感谢解答

swoole / swoole-src

为什么swow可以pcntl_fork，swoole不行？ #4945