Process\Pool 必须设置onWorkerStart 否则无法getProcess()

[HBSpy]

Please answer these questions before submitting your issue. Thanks!

1. What did you do? If possible, provide a simple script for reproducing the error.

 $pool = new Swoole\Process\Pool(2, SWOOLE_IPC_SOCKET);                                                                                                 
                                                                                                                                                        
 $pool->on('message', function($pool, $data){                                                                                                           
    var_dump($pool->getProcess());                                                                                                                     
 });                                                                                                                                                    
                                                                                                                                                        
 /* $pool->on('workerStart', function($pool, $id){ */                                                                                                   
 /* }); */                                                                                                                                              
                                                                                                                                                       
 $pool->listen('unix:/tmp/fuck.sock');                                                                                                                  
$pool->start();

2. What did you expect to see?
   object(Swoole\Process)SW_BUFFER_SIZE=8192 #4 (6) {
   ["pipe"]=>
   NULL
   ["callback"]=>
   NULL
   ["msgQueueId"]=>
   NULL
   ["msgQueueKey"]=>
   NULL
   ["pid"]=>
   int(4172)
   ["id"]=>
   int(1)
   }

3. What did you see instead?

bool(false)

4. What version of Swoole are you using (show your php --ri swoole)?

Swoole => enabled
Author => Swoole Team team@swoole.com
Version => 4.4.7
Built => Oct 15 2019 16:50:59
coroutine => enabled
epoll => enabled
eventfd => enabled
signalfd => enabled
cpu_affinity => enabled
spinlock => enabled
rwlock => enabled
sockets => enabled
openssl => OpenSSL 1.0.2k-fips 26 Jan 2017
http2 => enabled
pcre => enabled
zlib => enabled
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 (including version of kernel & php & gcc) ?

PHP 7.3.7 (cli) (built: Jul 31 2019 11:40:53) ( NTS )
gcc version 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)

[matyhtf]

请贴出一些详细的代码，你的使用场景是什么？

[twose]

这样的用法没什么意义