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Merge pull request #54 from idbrii/capture-w-func
async: Use function to capture ...
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commit
840f4ba703
59
async.lua
59
async.lua
@ -49,6 +49,35 @@ function async:add(co, args, callback, error_callback)
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})
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end
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local function process_resume(self, td, success, msg, ...)
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local co, args, cb, error_cb = unpack(td)
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--error?
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if not success then
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if error_cb then
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error_cb(msg)
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else
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local err = ("failure in async task:\n\n\t%s\n")
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:format(tostring(msg))
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error(err)
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end
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end
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--check done
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if coroutine.status(co) == "dead" then
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--done? run callback with result
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if cb then
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cb(msg, ...)
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end
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else
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--if not completed, re-add to the appropriate queue
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if msg == "stall" then
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--add to stalled queue as signalled stall
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table.insert(self.tasks_stalled, td)
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else
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table.insert(self.tasks, td)
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end
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end
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end
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--update some task in the kernel
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function async:update()
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--grab task definition
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@ -65,34 +94,8 @@ function async:update()
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end
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--run a step
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--(using unpack because coroutine is also nyi and it's core to this async model)
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local co, args, cb, error_cb = unpack(td)
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--(8 temps rather than table churn capturing varargs)
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local success, a, b, c, d, e, f, g, h = coroutine.resume(co, unpack(args))
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--error?
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if not success then
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if error_cb then
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error_cb(a)
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else
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local err = ("failure in async task:\n\n\t%s\n")
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:format(tostring(a))
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error(err)
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end
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end
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--check done
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if coroutine.status(co) == "dead" then
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--done? run callback with result
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if cb then
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cb(a, b, c, d, e, f, g, h)
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end
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else
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--if not completed, re-add to the appropriate queue
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if a == "stall" then
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--add to stalled queue as signalled stall
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table.insert(self.tasks_stalled, td)
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else
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table.insert(self.tasks, td)
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end
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end
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local co, args = unpack(td)
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process_resume(self, td, coroutine.resume(co, unpack(args)))
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return true
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end
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