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|
#! /usr/bin/env ruby
# -*- coding: UTF-8 -*-
#
# Copyright 2012 Jérémy Zurcher <jeremy@asynk.ch>
#
# This file is part of iotas.
#
# iotas is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# iotas is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with iotas. If not, see <http://www.gnu.org/licenses/>.
#
module Iotas
#
class Spin < Room
#
def initialize n, o={}
super n, nil
#
@pool = {} # per particle class free list
@world = {} # global iotas index
@sys_fifo = [] # system particles fifo list
@app_fifo = [] # application particles fifo list
#
@run = false
@hibernation = o['hibernation']||false
@hibernate_path = 'iotas-hibernate-'+n+'.json'
@debug_errors = o[:debug_errors]||o['debug_errors']||false
@debug_routing = o[:debug_routing]||o['debug_routing']||false
#
if not o.empty?
o['iotas'].each do |name,iota|
Iotas::Room.json_create(iota.merge!('parent'=>self))
end if o['iotas']
o['app_fifo'].each do |particle|
@app_fifo << Iotas::Particle.json_create(particle.merge!('spin'=>self))
end if o['app_fifo']
o['sys_fifo'].each do |particle|
@sys_fifo << Iotas::Particle.json_create(particle.merge!('spin'=>self))
end if o['sys_fifo']
end
end
#
attr_accessor :run, :hibernate_path, :debug_errors, :debug_routing
#
def to_json *a
{
'kls' => self.class.name,
'timestamp' => Time.now,
'name' => @name,
'hibernation' => @hibernation,
'iotas' => @iotas,
'sys_fifo' => @sys_fifo,
'app_fifo' => @app_fifo,
'debug_errors' => @debug_errors,
'debug_routing' => @debug_routing
}.to_json(*a)
end
#
def self.json_create o
raise Iotas::Exception.new "JSON #{o['kls']} != #{self.name}" if o['kls'] != self.name
self.new o['name'], o
end
#
def add_to_world iota
@world[iota.path] = iota
end
#
def search_world path
@world[path]
end
#
def clear!
@iotas.clear
@pool.clear
@sys_fifo.clear
@app_fifo.clear
end
#
#
def release_p p
# hope there is no circular loop
while p2=p.merged_shift
release_p p2
end
( @pool[p.class] ||= [] ) << p
end
#
def require_p p_kls
l = @pool[p_kls]
return p_kls.new if l.nil?
p = l.pop
return p_kls.new if p.nil?
p.reset!
p
end
#
def post_p p
@app_fifo << p
end
#
def post_sys_p p
@sys_fifo << p
end
#
def process_sys_p p
if p.action==Iotas::SYS_ACT_HIBERNATE
stop!
hibernate! p[FIELD_HIBERNATE_PATH]
else
super p
end
end
#
def spin!
@iotas.values.each do |iota| iota.start! end unless @hibernation
@run = true
@hibernation = false
while @run and (@sys_fifo.length>0 or @app_fifo.length>0)
while @run and @sys_fifo.length>0
p = @sys_fifo.shift
p.dst.process_sys_p p
end
while @run and @app_fifo.length>0
p = @app_fifo.shift
p.dst.process_p p
break
end
end
@iotas.values.each do |iota| iota.stop! end unless @hibernation
end
#
def stop!
@run=false
end
#
def hibernate! path=nil
@hibernation = true
File.open(path||@hibernate_path,'w') do |f| f << JSON.pretty_generate(self) end
end
#
def self.resume! path
self.json_create JSON.load File.open(path,'r') { |f| f.read }
end
#
end
#
end
#
# EOF
|
