Class: ProcessHelper

Inherits:
Object
  • Object
show all
Defined in:
lib/common/socket/rlib/process_helper.rb

Overview

require ‘log4s’

This class suply local process related mehtods

Author

chenjie

Date

2009-4-30

Class Method Summary collapse

Class Method Details

.get_thread_num(module_name) ⇒ Object

获取模块进程的线程数

  • module_name

return thead number or 0(process not running)



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# File 'lib/common/socket/rlib/process_helper.rb', line 58

def ProcessHelper.get_thread_num(module_name)
	str = `pstree | grep #{module_name}`
	mdata = str.scan /.*---(\d+).*/
	if mdata.size > 0 then
 return mdata[0][0].to_i
	else
 return 0
	end
end

.is_process_running?(module_name) ⇒ Boolean

判断进程是否正在运行return true/false

Returns:

  • (Boolean) 


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# File 'lib/common/socket/rlib/process_helper.rb', line 46

def ProcessHelper.is_process_running?(module_name)
	res = `pstree | grep #{module_name} | wc -l`
	if res.to_i > 0 then 
 return true
	else
 return false
	end
end

.kill_process(module_name) ⇒ Object

execute killall to kill a process, if the process is supervised, then it will restart return: void



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# File 'lib/common/socket/rlib/process_helper.rb', line 36

def ProcessHelper.kill_process(module_name)
	cmd_str = "killall -9 #{module_name}"
#   		$log.debug "kill process cmd = #{cmd_str}"
 		`#{cmd_str}`
 		sleep 1
end

.start_process(module_name, super_path = "/home/space/space/", child_path = "./bin/") ⇒ Object

用supervise启动单个模块进程

  • module_name module name, e.g.: appui

  • super_path default “/home/space/space”

  • sample Env.start_process(“/home/space/space”, “loadspace.sh”)

return true/false



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# File 'lib/common/socket/rlib/process_helper.rb', line 18

def ProcessHelper.start_process(module_name,super_path="/home/space/space/", child_path="./bin/")
	cmd_str = "cd #{super_path}; nohup #{child_path}#{module_name} >/dev/null 2>&1 &"
#   	$log.debug "start process: "+cmd_str
 	system "#{cmd_str}"

  	sleep 2
 	if ProcessHelper.is_process_running?(module_name) then
#      		$log.debug "process #{module_name} is running"
    		return true
  	else
#      		$log.debug "process #{module_name} is not running"
    		return false
  	end
end