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-rw-r--r--util/timer.lua151
1 files changed, 93 insertions, 58 deletions
diff --git a/util/timer.lua b/util/timer.lua
index 7e2e9414..70678ab2 100644
--- a/util/timer.lua
+++ b/util/timer.lua
@@ -6,78 +6,113 @@
-- COPYING file in the source package for more information.
--
+local indexedbheap = require "util.indexedbheap";
+local log = require "util.logger".init("timer");
local server = require "net.server";
-local math_min = math.min
-local math_huge = math.huge
local get_time = require "util.time".now
-local t_insert = table.insert;
-local pairs = pairs;
+local async = require "util.async";
local type = type;
-
-local data = {};
-local new_data = {};
+local debug_traceback = debug.traceback;
+local tostring = tostring;
+local xpcall = xpcall;
local _ENV = nil;
+-- luacheck: std none
-local _add_task;
-if not server.event then
- function _add_task(delay, callback)
- local current_time = get_time();
- delay = delay + current_time;
- if delay >= current_time then
- t_insert(new_data, {delay, callback});
- else
- local r = callback(current_time);
- if r and type(r) == "number" then
- return _add_task(r, callback);
- end
+local _add_task = server.add_task;
+
+local _server_timer;
+local _active_timers = 0;
+local h = indexedbheap.create();
+local params = {};
+local next_time = nil;
+local _id, _callback, _now, _param;
+local function _call() return _callback(_now, _id, _param); end
+local function _traceback_handler(err) log("error", "Traceback[timer]: %s", debug_traceback(tostring(err), 2)); end
+local function _on_timer(now)
+ local peek;
+ while true do
+ peek = h:peek();
+ if peek == nil or peek > now then break; end
+ local _;
+ _, _callback, _id = h:pop();
+ _now = now;
+ _param = params[_id];
+ params[_id] = nil;
+ --item(now, id, _param); -- FIXME pcall
+ local success, err = xpcall(_call, _traceback_handler);
+ if success and type(err) == "number" then
+ h:insert(_callback, err + now, _id); -- re-add
+ params[_id] = _param;
end
end
- server._addtimer(function()
- local current_time = get_time();
- if #new_data > 0 then
- for _, d in pairs(new_data) do
- t_insert(data, d);
- end
- new_data = {};
- end
+ if peek ~= nil and _active_timers > 1 and peek == next_time then
+ -- Another instance of _on_timer already set next_time to the same value,
+ -- so it should be safe to not renew this timer event
+ peek = nil;
+ else
+ next_time = peek;
+ end
- local next_time = math_huge;
- for i, d in pairs(data) do
- local t, callback = d[1], d[2];
- if t <= current_time then
- data[i] = nil;
- local r = callback(current_time);
- if type(r) == "number" then
- _add_task(r, callback);
- next_time = math_min(next_time, r);
- end
- else
- next_time = math_min(next_time, t - current_time);
- end
- end
- return next_time;
- end);
-else
- local event = server.event;
- local event_base = server.event_base;
- local EVENT_LEAVE = (event.core and event.core.LEAVE) or -1;
+ if peek then
+ -- peek is the time of the next event
+ return peek - now;
+ end
+ _active_timers = _active_timers - 1;
+end
+local function add_task(delay, callback, param)
+ local current_time = get_time();
+ local event_time = current_time + delay;
- function _add_task(delay, callback)
- local event_handle;
- event_handle = event_base:addevent(nil, 0, function ()
- local ret = callback(get_time());
- if ret then
- return 0, ret;
- elseif event_handle then
- return EVENT_LEAVE;
- end
+ local id = h:insert(callback, event_time);
+ params[id] = param;
+ if next_time == nil or event_time < next_time then
+ next_time = event_time;
+ if _server_timer then
+ _server_timer:close();
+ _server_timer = nil;
+ else
+ _active_timers = _active_timers + 1;
end
- , delay);
+ _server_timer = _add_task(next_time - current_time, _on_timer);
end
+ return id;
+end
+local function stop(id)
+ params[id] = nil;
+ local result, item, result_sync = h:remove(id);
+ local peek = h:peek();
+ if peek ~= next_time and _server_timer then
+ next_time = peek;
+ _server_timer:close();
+ if next_time ~= nil then
+ _server_timer = _add_task(next_time - get_time(), _on_timer);
+ end
+ end
+ return result, item, result_sync;
+end
+local function reschedule(id, delay)
+ local current_time = get_time();
+ local event_time = current_time + delay;
+ h:reprioritize(id, delay);
+ if next_time == nil or event_time < next_time then
+ next_time = event_time;
+ _add_task(next_time - current_time, _on_timer);
+ end
+ return id;
+end
+
+local function sleep(s)
+ local wait, done = async.waiter();
+ add_task(s, done);
+ wait();
end
return {
- add_task = _add_task;
+ add_task = add_task;
+ stop = stop;
+ reschedule = reschedule;
+ sleep = sleep;
};
+