daemon

I can't run my Rails application with daemons gem

由 可紊 提交于 2019-12-11 11:52:18
问题 I want to use Daemons gem with my Rails project so I can easily monitore it with Monit, this gem will allow me to create PIDs and use commands like start and stop . Anyways it seems I can't use it with rails somehow, I create a file and named it admin : require 'rubygems' require 'daemons' ROOT_PATH = File.expand_path("#{File.dirname __FILE__}/../") require "#{ROOT_PATH}/config/environment" Daemons.run("#{ROOT_PATH}/script/rails" , :dir_mode => :system, :log_output => true ) When I try to run

Does a Java Daemon Thread Share Heap or Perm Gen with Spawning Process?

由 妖精的绣舞 提交于 2019-12-11 10:43:15
问题 If I create a Daemon thread from my program (a non-daemon process), are the heap and perm gen memory spaces shared with the new thread or is it allocated anew? If the daemon thread gets its own spaces, are the JVM memory tuning args like max heap size, etc respected in the creation of the new thread? 回答1: are the heap and perm gen memory spaces shared with the new thread or is it allocated anew? All threads (daemon status does not matter) share heap and perm memory spaces. Each thread has it

Docker daemon processes

由 独自空忆成欢 提交于 2019-12-11 10:14:35
问题 I have found, that Docker daemon runs more than in one instance. I have got PID(13399) with service docker status , but there are also different PIDs. I have created only one container. 回答1: As you can see in the list the stats are basically the same (MEM, etc.). These processes are actually just forks from the original process. Forking is usually used to execute another application in the environment of the parent process (in this case: docker). I don't know what docker specifically uses it

python线程对象属性

由 天涯浪子 提交于 2019-12-11 09:10:26
t.name 线程名称 t.setName() 设置线程名称 t.getName() 获取线程名称 t.is_alive() 查看线程是否在生命周期内 t.daemon 设置主线程和分支线程的退出关系 t.setDaemon() 设置daemon属性值，设置主线恒退出分支线程也随之退出 t.isDaemon() 查看daemon属性值 from threading import Thread from time import sleep def fun ( ) : sleep ( 3 ) print ( '进程属性设置' ) t = Thread ( target = fun , name = 'AI' , daemon = True ) #name给线程取名,daemon设置主线程退出时分支线程也随之退出 t . setDaemon ( True ) #也可以在这儿设置主线程退出分支线程随之退出，不会和join()一起使用，因为矛盾 t . setName ( 'Tarena' ) print ( 'Name:' , t . getName ( ) ) #获取线程名 print ( 'is alive:' , t . is_alive ( ) ) print ( 'is daemon:' , isDaemon ( ) ) #在线程中别用exit(),在一个线程内执行exit()

Data exchange between daemon and launch agent

由 无人久伴 提交于 2019-12-11 07:44:40
问题 Mac OS X Snow Leopard and Lion. I have a daemon (which runs from root) and launch agent which runs from current user. How can daemon request data (or send command) to launch agent? 回答1: If you want to achieve simple IPC between the daemon and agent, refer to my answer here : OS X - Communication between launch daemon and launch agent. Make sure to set up this socket-based communication on separate threads, so as not to interrupt the flow of your program. 来源： https://stackoverflow.com

Yarn nodemanager not starting up. Getting no errors

由 Deadly 提交于 2019-12-11 07:43:33
问题 I have Hadoop 2.7.4 installed on Ubuntu 16.04. I'm trying to run it in Pseudo Mode. I have a '/hadoop' partition mounted for all my hadoop files, NameNode and DataNode files. My core-site.xml is: <configuration> <property> <name>fs.defaultFS</name> <value>hdfs://localhost:9000</value> </property> </configuration> My hdfs-site.xml is: <configuration> <property> <name>dfs.replication</name> <value>1</value> </property> <property> <name>dfs.name.dir</name> <value>/hadoop/nodes/namenode</value> <

mysql connection from daemon written in php

由 倖福魔咒の 提交于 2019-12-11 06:25:58
问题 i have written a daemon to fetch some stuff from mysql and make some curl requests based on the info from mysql. since i'm fluent in php i've written this daemon in php using System_Daemon from pear. this works fine but i'm curious about the best approach for connecting to mysql. feels weird to create a new mysql connection every couple of seconds, should i try a persistent connection? any other input? keeping potential memory leaks to a minimum is of the essence... cleaned up the script,

Python多线程编程(一）：threading 模块 Thread 类的用法详解

由 混江龙づ霸主 提交于 2019-12-11 06:04:37
我们进行程序开发的时候，肯定避免不了要处理并发的情况。 一般并发的手段有采用多进程和多线程。 但线程比进程更轻量化，系统开销一般也更低，所以大家更倾向于用多线程的方式处理并发的情况。 Python 提供多线程编程的方式。 本文基于 Python3 讲解,Python 实现多线程编程需要借助于 threading 模块。 所以，我们要在代码中引用它。 import threading threading 模块中最核心的内容是 Thread 这个类。 我们要创建 Thread 对象,然后让它们运行，每个 Thread 对象代表一个线程，在每个线程中我们可以让程序处理不同的任务，这就是多线程编程。 值得注意的是，程序运行时默认就是在主线程上 创建 Thread 对象有 2 种手段。 直接创建 Thread ，将一个 callable 对象从类的构造器传递进去，这个 callable 就是回调函数，用来处理任务。 编写一个自定义类继承 Thread，然后复写 run() 方法，在 run() 方法中编写任务处理代码，然后创建这个 Thread 的子类。 直接创建 Thread 对象。 class threading.Thread(group=None, target=None, name=None, args=(), kwargs={}, *, daemon=None) Thread

Emacs C-x C-c overriding save-buffers-kill-terminal if within last open frame

由 女生的网名这么多〃 提交于 2019-12-11 03:17:51
问题 I have setup emacs -daemon to run on login to Gnome and associated emacsclient with .cpp and .py files that I work with in Eclipse in order that emacs is used as my default editor for these files when selected within Eclipse. This way I can get a good work flow combining the editing capabilities of emacs and the project/build management and debugging facilities of Eclipse. Anyhoo... I want to prevent C-x C-c from closing the Emacs frame I am currently editing in if it is the only Emacs frame

Perl Daemon Not Working with Sleep()

由 霸气de小男生 提交于 2019-12-11 02:42:47
问题 I wrote a simple test daemon using Proc::Daemon . Here is the daemon: #!/usr/bin/perl use Proc::Daemon; $daemon = Proc::Daemon->new( work_dir => '/scripts/', child_STDOUT => '/scripts/child.log', child_STDERR => '+>>debugchild.txt', pid_file => 'pid.txt', exec_command => 'perl /scripts/test.pl' ); foreach(@ARGV) { if ( /install/i ) { $Kid_1_PID = $daemon->Init; } elsif (/remove/i) { $stopped = $daemon->Kill_Daemon(); } } And here is test that it executes: #!/usr/local/bin/perl while (1) {
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