add timer

1 files changed, 59 insertions, 0 deletions

diff --git a/xmake/core/base/timer.lua b/xmake/core/base/timer.lua
new file mode 100644
index 000000000..49dd6be5d
--- /dev/null
+++ b/xmake/core/base/timer.lua
@@ -0,0 +1,59 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+-- 
+-- Copyright (C) 2015 - 2019, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        timer.lua
+--
+
+-- load modules
+local heap   = require("base/heap")
+local object = require("base/object")
+
+-- define module: timer
+local timer  = timer or object()
+
+-- get all timer tasks
+function timer:_tasks()
+    return self._TASKS
+end
+
+-- post timer task at the absolute time and will be auto-remove it after be expired
+function timer:post_at(when, period, repeat, task)
+    -- TODO
+end
+
+-- get timer name
+function timer:name()
+    return self._NAME
+end
+
+-- init timer
+function timer:init(name)
+    self._NAME  = name
+    self._TASKS = heap.valueheap {cmp = function(a, b)
+        return a.when < b.when
+    end}
+end
+
+-- new timer
+function timer:new(name)
+    self = self()
+    self:init(name)
+    return self
+end
+
+-- return module: timer
+return timer