# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1525385417 -7200
# Node ID 7a9b680a79fb4ef5259c0aad0bfddf1911961e77
# Parent  5dbebb7627ef74aff27aef1c4ace7bf4edd98aea
util.async: Move runner id into log tag

Avoids string concatenation in every logger call

diff -r 5dbebb7627ef -r 7a9b680a79fb util/async.lua
--- a/util/async.lua	Fri May 11 16:03:35 2018 +0200
+++ b/util/async.lua	Fri May 04 00:10:17 2018 +0200
@@ -1,4 +1,5 @@
-local log = require "util.logger".init("util.async");
+local logger = require "util.logger";
+local log = logger.init("util.async");
 local new_id = require "util.id".short;
 
 local function checkthread()
@@ -135,8 +136,10 @@
 end
 local function default_func(f) f(); end
 local function runner(func, watchers, data)
+	local id = new_id();
+	local _log = logger.init("runner" .. id);
 	return setmetatable({ func = func or default_func, thread = false, state = "ready", notified_state = "ready",
-		queue = {}, watchers = watchers or { error = default_error_watcher }, data = data, id = new_id() }
+		queue = {}, watchers = watchers or { error = default_error_watcher }, data = data, id = id, _log = _log; }
 	, runner_mt);
 end
 
@@ -219,7 +222,7 @@
 end
 
 function runner_mt:log(level, fmt, ...)
-	return log(level, "[runner %s] "..fmt, self.id, ...);
+	return self._log(level, fmt, ...);
 end
 
 function runner_mt:onready(f)