### onWorkerStart
*****
<br>
此事件在`Worker`进程`Task`进程启动时发生。这里创建的对象可以在进程生命周期内使用。原型:
~~~
function onWorkerStart(swoole_server $server, int $worker_id);
~~~
* `onWorkerStart`/`onStart`是并发执行的,没有先后顺序
* 可以通过`$server->taskworker`属性来判断当前是`Worker`进程还是`Task`进程
* 设置了`worker_num`和`task_worker_num`超过`1`时,每个进程都会触发一次`onWorkerStart`事件,可通过判断`$worker_id`区分不同的工作进程
* 由 worker 进程向 task 进程发送任务,task 进程处理完全部任务之后通过onFinish回调函数通知 worker 进程。例如,我们在后台操作向十万个用户群发通知邮件,操作完成后操作的状态显示为发送中,这时我们可以继续其他操作。等邮件群发完毕后,操作的状态自动改为已发送。
<br>
### **注意事项**
* 发生致命错误或者代码中主动调用`exit`时,`Worker`/`Task`进程会退出,管理进程会重新创建新的进程。这可能导致死循环,不停地创建销毁进程
- 序章
- 1.环境搭建
- PHP7源码编译安装
- Swoole源码编译安装
- Mysql5.7源码安装
- Redis安装
- 2.搭建Echo服务器
- 3.Server服务器
- 函数列表
- Server::__construct
- Server->set
- Server->on
- Server->start
- Server->send
- WebSocket
- Server->push
- Server->exist
- Server::pack
- Server::unpack
- Server->disconnect
- Server->isEstablished
- 配置选项
- reactor_num
- worker_num
- max_request
- max_conn
- daemonize
- backlog
- log_file
- log_level
- upload_tmp_dir
- http_parse_post
- document_root
- http_compression
- 事件回调函数
- onStart
- onWorkerStart
- onConnect
- onReceive
- onPacket
- onRequest
- 请求Request
- Http\Request->$header
- Http\Request->$server
- Http\Request->$get
- Http\Request->$post
- Http\Request->$cookie
- Http\Request->$files
- Http\Request->rawContent
- Http\Request->getData
- 响应Response
- Http\Response->header
- Http\Response->cookie
- Http\Response->status
- Http\Response->redirect
- Http\Response->write
- Http\Response->sendfile
- Http\Response->end
- Http\Response->detach
- Http\Response::create
- onClose
- onOpen
- onMessage
- 创建服务器
- TCP服务器
- UDP服务器
- HTTP服务器
- WebSocket服务器
- 4.定时器Timer
- 5.进程Process
- Process::__construct
- Process->start
- Process->name
- Process->exec
- Process->write
- Process->read
- Process->setTimeout
- Process->setBlocking
- Process->useQueue
- Process->statQueue
- Process->freeQueue
- Process->push
- Process->pop
- Process->close
- Process->exit
- Process::kill
- Process::wait
- Process::daemon
- Process::signal
- 6.内存Memory
- Table
- Table->__construct
- Table->column
- Table->create
- Table->set
- Table->incr
- Table->decr
- Table->get
- Table->exist
- Table->count
- Table->del
- Channel
- Channel->__construct
- Channel->push
- Channel->pop
- Channel->stats
- 7.协程Coroutine
- Coroutine
- Coroutine::list
- Coroutine::set
- Coroutine::stats
- Coroutine::create
- Coroutine::exist
- Coroutine::getCid
- Coroutine::getContext
- Coroutine::defer
- Coroutine::getBackTrace
- Coroutine::yield
- Coroutine::resume
- Coroutine::fread
- Coroutine::fgets
- Coroutine::fwrite
- Coroutine::sleep
- Coroutine::gethostbyname
- Coroutine::getaddrinfo
- Coroutine::exec
- Coroutine::readFile
- Coroutine::writeFile
- Coroutine::statvfs
- Coroutine::getPcid
- Coroutine\Channel
- Coroutine\Channel->__construct
- Coroutine\Channel->push
- Coroutine\Channel->pop
- Coroutine\Channel->stats
- Coroutine\Channel->close
- Coroutine\Channel->length
- Coroutine\Channel->isEmpty
- Coroutine\Channel->isFull
- Coroutine\Channel->$capacity
- Coroutine\Channel->$errCode
- Coroutine\Client
- Coroutine\Client->connect
- Coroutine\Client->send
- Coroutine\Client->recv
- Coroutine\Client->close
- Coroutine\Client->peek
- Coroutine\Client->set
- Coroutine\Http\Client
- Coroutine\Http\Client->get
- Coroutine\Http\Client->post
- 其他
- 并行和并发的区别
- 堆、栈、队列