Software / code / prosody
Changeset
8407:f652e1ea2f69
util.async: Factor out thread check into a function
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Tue, 21 Nov 2017 21:48:14 +0100 |
| parents | 8406:e39edc6d1523 |
| children | 8408:b751bee6a829 |
| files | util/async.lua |
| diffstat | 1 files changed, 10 insertions(+), 8 deletions(-) [+] |
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--- a/util/async.lua Mon Nov 20 02:22:09 2017 +0100 +++ b/util/async.lua Tue Nov 21 21:48:14 2017 +0100 @@ -1,5 +1,13 @@ local log = require "util.logger".init("util.async"); +local function checkthread() + local thread = coroutine.running(); + if not thread then + error("Not running in an async context, see https://prosody.im/doc/developers/util/async"); + end + return thread; +end + local function runner_continue(thread) -- ASSUMPTION: runner is in 'waiting' state (but we don't have the runner to know for sure) if coroutine.status(thread) ~= "suspended" then -- This should suffice @@ -25,10 +33,7 @@ end local function waiter(num) - local thread = coroutine.running(); - if not thread then - error("Not running in an async context, see https://prosody.im/doc/developers/util/async"); - end + local thread = checkthread(); num = num or 1; local waiting; return function () @@ -48,10 +53,7 @@ local function guarder() local guards = {}; return function (id, func) - local thread = coroutine.running(); - if not thread then - error("Not running in an async context, see https://prosody.im/doc/developers/util/async"); - end + local thread = checkthread(); local guard = guards[id]; if not guard then guard = {};
