pid | 易学教程

swoole快速入门

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$serv = new swoole_server('0.0.0.0', 9501); $serv->set([ 'worker_num' => 4, //worker 进程数 cpu的1-4倍,可以采用 ps -aft|grep php 来查看 'max_request' => 10000, ]); $serv->manager_pid; //管理进程的PID，通过向管理进程发送SIGUSR1信号可实现柔性重启 $serv->master_pid; //主进程的PID，通过向主进程发送SIGTERM信号可安全关闭服务器 $serv->connections; //当前服务器的客户端连接，可使用foreach遍历所有连接来源： CSDN 作者：万里长城迢迢远链接： https://blog.csdn.net/xonmao2008/article/details/103444592

What is the ___mac_get_pid symbol in a node profile?

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问题 I am profiling some multi-process nodejs code run on OSX. I'm seeing: [C++]: ticks total nonlib name 23398 63.6% 63.8% ___mac_get_pid What is ___mac_get_pid ? It's name is certainly suggestive that it's some code that "gets a PID on a Mac", but the time seems excessive. Googling has provided nothing useful. 回答1: __mac_get_pid is the syscall behind mac_get_pid library function. It is described in man page mac_get : http://man.cx/mac_get(3) mac_get_pid .. get the label of a file, socket, socket

how to stop rabbitmq servers

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问题 I am trying to start a node app and I think rabbitmq is getting in the way. Similar to this thread: "node with name "rabbit" already running", but also "unable to connect to node 'rabbit'" $ ps aux | grep erl rabbitmq 1327 0.0 0.0 2376 300 ? S Dec13 0:00 /usr/lib/erlang/erts-5.8.5/bin/epmd -daemon rabbitmq 1344 0.0 0.3 59560 14888 ? Sl Dec13 0:10 /usr/lib/erlang/erts-5.8.5/bin/beam.smp -W w -K true -A30 -P 1048576 -- -root /usr/lib/erlang -progname erl -- -home /var/lib/rabbitmq -- -noshell

多进程案例

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PHP的pcntl多进程 2013-07-26 18:03 by 轩脉刃, 11446 阅读, 5 评论, 收藏 , 编辑 PHP使用PCNTL系列的函数也能做到多进程处理一个事务。比如我需要从数据库中获取80w条的数据，再做一系列后续的处理，这个时候，用单进程？你可以等到明年今天了。。。所以应该使用pcntl函数了。假设我想要启动20个进程，将1-80w的数据分成20份来做，主进程等待所有子进程都结束了才退出： 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 $max = 800000; $workers = 20; $pids = array (); for ( $i = 0; $i < $workers ; $i ++){ $pids [ $i ] = pcntl_fork(); switch ( $pids [ $i ]) { case -1: echo "fork error : {$i} \r\n" ; exit ; case 0: $param = array ( 'lastid' => $max / $workers * $i , 'maxid' => $max / $workers * ( $i +1), ); $this ->executeWorker(

Java获取当前进程ID（PID）

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之前并不知道Java中如何能够获取当前进程（也就是包含当前Java程序的JVM所在进程）的进程ID，还以为要通过JNI或者通过Runtime.exec执行shell命令等方式才能获取到当前进程的进程ID，今天在偶然中看到一种在Java程序里，获取当前进程ID的方法，记录下来，以后应该会用到：）首先，从JDK1.5之后，Java开始提供包：java.lang.management java.lang.management 提供了一系列的用来在运行时管理和监督JVM和OS的管理接口。今天我将用到的就是这个包中的一个类：ManagementFactory。获取pid的程序代码如下： import sun . management . ManagementFactory ; // get name representing the running Java virtual machine. String name = ManagementFactory . getRuntimeMXBean ( ) . getName ( ) ; System . out . println ( name ) ; // get pid String pid = name . split ( "@" ) [ 0 ] ; System . out . println ( “Pid is : ” ＋ pid

利用python管理windows进程

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#单独获取当前目录名 import os def name(): return os.path.split(os.getcwd())[-1] #WIN关闭一个进程 import ctypes def kill(pid): """kill function for Win32""" kernel32 = ctypes.windll.kernel32 handle = kernel32.OpenProcess(1, 0, pid) #使用termina函数结束进程 return (0 != kernel32.TerminateProcess(handle, 0)) 来源： oschina 链接： https://my.oschina.net/u/58394/blog/62881

How to list all background pids in bash

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问题 Either I am not able to phrase my search correctly or the answer is not easy to find!, but I am trying to figure out how to list all of my background task PIDs. For example: So far I have found that to list the last PID we use: $! But now I want to list the PID of the task before that (if one exists), but I can't find how to do that. Utlimatly I want to list all my background task PIDs. I know we can also find last job ID with: %% (last job in list) %1 (first job in list) %2 (second job in

How to check if an arbitrary PID is running using Node.js?

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问题 Is there some way to check if an arbitrary PID is running or alive on the system, using Node.js? Assume that the Node.js script has the appropriate permissions to read /proc or the Windows equivalent. This could be done either synchronously: if (isAlive(pid)) { //do stuff } Or asynchronously: getProcessStatus(pid, function(status) { if (status === "alive") { //do stuff } } Note that I'm hoping to find a solution for this that works with an arbitrary system PID , not just the PID of a running

Windows batch file : PID of last process?

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问题 I am launching a browser from batch file. START "www.google.com" I would like to know the PID of this browser window launched. There can be many browser windows launched on a single machine. I need to find the PID of the process which was launched by my batch file only. I tried with WINDOWTITLE filter. But its not a good idea as titles may change in future. I am using Windows XP/7 Any help would be appreciated. Thanks. 回答1: For what it worth (question is more than 2 years old) this code do

MySQL won't shutdown: “Stop server: ERROR! MySQL server PID file could not be found!”

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Beginner here! I had the server up and running and functioning yesterday, but today I can't connect to my site. I tried to shutdown the MySQL server but the ff error was given Stop server: ERROR! MySQL server PID file could not be found! The server is running using MySQL Workbench. To be fair, I was using the MySQL Preference Pane and/or the command line yesterday sudo /usr/local/mysql/support-files/mysql.server start I've seen many kinds of solutions online, all very different. I've tried some to no avail. (Also, I don't even know what and where the PID file is...) Any suggestions? Thank you