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koreader/frontend/ui/message/filemessagequeue.lua
2016-02-15 22:34:28 -08:00

53 lines
1.6 KiB
Lua

local ffi = require("ffi")
local DEBUG = require("dbg")
local MessageQueue = require("ui/message/messagequeue")
local _ = require("ffi/zeromq_h")
local czmq = ffi.load("libs/libczmq.so.1")
local filemq = ffi.load("libs/libfmq.so.1")
local FileMessageQueue = MessageQueue:new{
client = nil,
server = nil,
}
function FileMessageQueue:init()
if self.client ~= nil then
self.fmq_recv = filemq.fmq_client_recv
self.filemq = self.client
self.poller = czmq.zpoller_new(filemq.fmq_client_handle(self.client), nil)
elseif self.server ~= nil then
-- TODO: currently fmq_server_recv API is not available
--self.fmq_recv = filemq.fmq_server_recv
self.filemq = self.server
-- TODO: currently fmq_server_handle API is not available
--self.poller = czmq.zpoller_new(filemq.fmq_server_handle(self.server), nil)
end
end
function FileMessageQueue:stop()
if self.client ~= nil then
DEBUG("stop filemq client")
filemq.fmq_client_destroy(ffi.new('fmq_client_t *[1]', self.client))
end
if self.server ~= nil then
DEBUG("stop filemq server")
filemq.fmq_server_destroy(ffi.new('fmq_server_t *[1]', self.server))
end
if self.poller ~= nil then
czmq.zpoller_destroy(ffi.new('zpoller_t *[1]', self.poller))
end
end
function FileMessageQueue:waitEvent()
if not self.poller then return end
if czmq.zpoller_wait(self.poller, 0) ~= nil then
local msg = self.fmq_recv(self.filemq)
if msg ~= nil then
table.insert(self.messages, msg)
end
end
return self:handleZMsgs(self.messages)
end
return FileMessageQueue