Timer and TimerTask - 未名空间MITBBS历史存档

国际科技财经博客移民网络热点娱乐民生时事公众号

Redian新闻

>未名空间

>Java - 爪哇娇娃

Timer and TimerTask

Timer and TimerTask# Java - 爪哇娇娃

p*p2006-01-24 08:01

1 楼

There is lots of timer taskes in my software, such as session time out, auto-
reload and clean.... I use TimerTask.run and Timer.schedule(...) to implement
them.
In order to save rescoure, I use a single Timer for all such taskes in my
Application(somehow as a static). My question is, could it be a performance
hit when tousand such taskes running on single Timer, or i'd better use more
timers.

c*n2006-01-24 08:01

2 楼

-
implement
From the Timer() class:
Implementation note: This class scales to large numbers of concurrently
scheduled tasks (thousands should present no problem). Internally, it uses a
binary heap to represent its task queue, so the cost to schedule a task is O(
log n), where n is the number of concurrently scheduled tasks.

【在 p***p 的大作中提到】

: There is lots of timer taskes in my software, such as session time out, auto-
: reload and clean.... I use TimerTask.run and Timer.schedule(...) to implement
: them.
: In order to save rescoure, I use a single Timer for all such taskes in my
: Application(somehow as a static). My question is, could it be a performance
: hit when tousand such taskes running on single Timer, or i'd better use more
: timers.

p*p2006-01-24 08:01

3 楼

Thanx, so the summery is?

(

【在 c*****n 的大作中提到】

:
: -
: implement
: From the Timer() class:
: Implementation note: This class scales to large numbers of concurrently
: scheduled tasks (thousands should present no problem). Internally, it uses a
: binary heap to represent its task queue, so the cost to schedule a task is O(
: log n), where n is the number of concurrently scheduled tasks.