75 lines
1.3 KiB
Lua
75 lines
1.3 KiB
Lua
local class = require('class')
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local os = _G.os
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local TaskRunner = class()
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local free = { }
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local function createTask(fn)
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local task = table.remove(free)
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if not task then
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task = {
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fn = fn,
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co = coroutine.create(function()
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local args = { }
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while true do
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pcall(task.fn, table.unpack(args))
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task.dead = true
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table.insert(free, task)
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args = { coroutine.yield() }
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end
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end)
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}
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else
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task.dead = nil
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task.fn = fn
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end
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return task
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end
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function TaskRunner:init(args)
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self.tasks = { }
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self.errorMsg = 'Task failed: '
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for k,v in pairs(args or { }) do
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self[k] = v
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end
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end
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function TaskRunner:add(fn)
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table.insert(self.tasks, createTask(fn))
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end
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function TaskRunner:run()
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if #self.tasks > 0 then
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local event = { }
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while true do
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for n = #self.tasks, 1, -1 do
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local task = self.tasks[n]
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if task.filter == nil or task.filter == event[1] or event[1] == "terminate" then
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local ok, param = coroutine.resume(task.co, table.unpack(event))
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if not ok then
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self:onError(param)
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else
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task.filter = param
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end
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if task.dead then
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table.remove(self.tasks, n)
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end
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end
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end
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if #self.tasks == 0 then
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break
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end
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event = { os.pullEventRaw() }
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end
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end
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end
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function TaskRunner:onError(msg)
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_G._syslog(msg.errorMsg .. msg)
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end
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return TaskRunner
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