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[added] proper tracebacks to errors in async tasks with xpcall (only works for functions with :call, not coroutines with :add)

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This commit is contained in:
Max Cahill 2020-07-24 09:15:28 +10:00
parent 8c5fa157c7
commit 84197b5216
1 changed files with 9 additions and 2 deletions
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11
async.lua
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@ -12,7 +12,7 @@
getting a reference to the task for manipulation
attaching multiple callbacks
cancelling
` proper error traces with internal xpcall?
` proper error traces for coroutines with async:add, additional wrapper?
]]
local path = (...):gsub("async", "")
@ -29,7 +29,14 @@ end
--add a task to the kernel
function async:call(f, args, callback, error_callback)
self:add(coroutine.create(f), args, callback, error_callback)
self:add(coroutine.create(function(...)
local results = {xpcall(f, debug.traceback, ...)}
local success = table.remove(results, 1)
if not success then
error(table.remove(results, 1))
end
return unpack(results)
end), args, callback, error_callback)
end
--add an already-existing coroutine to the kernel