CN101887361A - Method for efficiently processing delayed tasks under multi-thread environment - Google Patents
Method for efficiently processing delayed tasks under multi-thread environment Download PDFInfo
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- CN101887361A CN101887361A CN2009100840910A CN200910084091A CN101887361A CN 101887361 A CN101887361 A CN 101887361A CN 2009100840910 A CN2009100840910 A CN 2009100840910A CN 200910084091 A CN200910084091 A CN 200910084091A CN 101887361 A CN101887361 A CN 101887361A
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Abstract
The invention discloses a method for efficiently processing delayed tasks under the multi-thread environment, which comprises that: one class is taken as a base class of all tasks, and other concrete delayed tasks succeed the base class; when a program is started, a task list processor is initialized, which comprises a to-be-processed task list, and after all timed tasks are initialized, all the timed tasks are added into the task list to wait for execution; when an application program is started, a task dispatcher is initialized; when the application wants to execute a delay to a task to be executed at a certain time point, a concrete task object succeeding the task base class and rewriting an Execute () method is initialized, and the task is added to the task list by an AddDuty method of the task list processor; and finally, the task dispatcher executes the Execute () method of the task list processor at short intervals. Through the method, the delayed tasks can be executed under the multi-thread complex environment.
Description
Technical field
The present invention relates to a kind of under multi-thread environment the efficient method of handling delayed tasks, particularly a kind of use C# (C# be Microsoft's issue a kind of OO, run on the high-level programming language on the .NET Framework.It has comprised such as single succession, interface, with the almost same grammer of Java be compiled into the process that intermediate code is reruned, has been the leading role of the .NET windows of Microsoft network frame.) technology efficient method of handling delayed tasks under multi-thread environment.
Background technology
The service routine that operates under the multi-thread environment is generally much complicated than single-threaded because need in this case to shared resource synchronously.And .Net itself provides thread pool, this is when improving efficiency of service, also having increased the complicacy of exploitation to a certain extent, is the decision of .Net thread pool because which thread user's request is specifically distributed to, and the developer can not determine new user's request will by which thread process.
If general wanting allows thread carry out after a while again, can adopt the Thread.Sleep method, the method will be waken up execution again to reach the purpose of time-delay after will allowing thread silence for a moment.Though the method is simple; but may influence other users; use a server thread Processing tasks simultaneously because may have a plurality of clients; server rashly certain thread Sleep; may make other use the request of the client of this thread process task also to be suspended, this can influence user experience even programmed logic is taken place chaotic usually greatly.
Summary of the invention
Technical matters to be solved by this invention provides a kind of under multi-thread environment, use with user thread independently the clock thread trigger timed task, making the processed method that task that time-delay carries out can stability and high efficiency.
A kind of method of under multi-thread environment, efficiently handling delayed tasks of the present invention, this method comprises following step at least:
Step 1: with the base class of a class as all tasks, other concrete delayed tasks must be inherited this base class.This type of has attribute a: ExecuteTime to represent the time that task is performed, and has empty method a: Execute () to be used for by after having arrived task execution time, carries out concrete operations;
Step 2: during program start, task list processor of initialization at first, it comprises a to-be-processed task list, and all timed tasks are after initialization is good, and it is medium pending to add this task list.This processor has two method: Execute () and AddDuty (Duty duty), previous method be used for the executing the task task of tabulation the inside, and a back method is used for specific tasks are added to task list;
Step 3: when application program launching, task dispatcher of initialization, it comprises a clock: the Timer object, it excited once every a bit of time, the Execute () method of the list object of executing the task;
Step 4: when application is wanted to carry out the task of the execution sometime of delaying time, must one of initialization have inherited the task base class and rewritten the specific tasks object of Execute () method, by AddDuty (Duty duty) method of task list processor task has been added in the task list then;
Step 5: a bit of time of every mistake, can execute the task the Execute () method of list processor of task dispatcher, the method is taken out all task objects in order, judges the execution time, if between carrying out＞current time, then carry out the Execute () method of this task object;
A kind of method of under multi-thread environment, efficiently handling delayed tasks that the present invention relates to, make under the complex environment of multithreading, the task that time-delay is carried out can be carried out, because the clock thread can be not shared with any one client-requested, so when it carries out timed task, can not impact to the Any user request.
Embodiment
Key step of the present invention is as follows:
Step 1: with the base class of a class as all tasks, other concrete delayed tasks must be inherited this base class;
Step 2: during program start, task list processor of initialization at first, it comprises a to-be-processed task list, and all timed tasks are after initialization is good, and it is medium pending to add this task list;
Step 3: when application program launching, task dispatcher of initialization, it excited once every a bit of time, the Execute () method of the list object of executing the task;
Step 4: when application is wanted to carry out the task of the execution sometime of delaying time, must one of initialization have inherited the task base class and rewritten the specific tasks object of Execute () method, by AddDuty (Duty duty) method of task list processor task has been added in the task list then;
Step 5: a bit of time of every mistake, can execute the task the Execute () method of list processor of task dispatcher, the method is taken out all task objects in order, judges the execution time, if between carrying out＞current time, then carry out the Execute () method of this task object;
When above-mentioned technical scheme is implemented, initialization task and specifically execute the task and realized loose coupling, this has increased the extensibility of timed task system greatly, in addition, because use independent clock thread to come regularly triggering task, make the execution stability and high efficiency more of under the complex environment of multithreading timed task, even the shared thread of a plurality of clients is arranged, when carrying out timed task, existing Any user thread can not be affected.
It should be noted last that above embodiment is only in order to explanation and unrestricted technical scheme described in the invention; Therefore, although this instructions has been described in detail the present invention with reference to the above embodiments,, those of ordinary skill in the art should be appreciated that still and can make amendment or replacement to the present invention with being equal to; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. efficient method of handling delayed tasks under multi-thread environment, it is characterized in that: this method comprises following step at least:
Step 1: with the base class of a class as all tasks, other concrete delayed tasks must be inherited this base class.
Step 2: during program start, task list processor of initialization at first, it comprises a to-be-processed task list, and all timed tasks are after initialization is good, and it is medium pending to add this task list.
Step 3: when application program launching, task dispatcher of initialization, it comprises a clock: the Timer object, it excited once every a bit of time, the Execute () method of the list object of executing the task.
Step 4: when application is wanted to carry out the task of the execution sometime of delaying time, must one of initialization have inherited the task base class and rewritten the specific tasks object of Execute () method, by the AddDuty method of task list processor task has been added in the task list then.
Step 5: a bit of time of every mistake, can execute the task the Execute () method of list processor of task dispatcher, the method is taken out all task objects in order, judges the execution time, if between carrying out＞current time, then carry out the Execute () method of this task object.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100840910A CN101887361A (en) | 2009-05-14 | 2009-05-14 | Method for efficiently processing delayed tasks under multi-thread environment |
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| CN2009100840910A CN101887361A (en) | 2009-05-14 | 2009-05-14 | Method for efficiently processing delayed tasks under multi-thread environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068861A (en) * | 2015-07-09 | 2015-11-18 | 合肥君正科技有限公司 | Transaction execution method and device |
| CN109766131A (en) * | 2017-11-06 | 2019-05-17 | 上海宝信软件股份有限公司 | The system and method for the intelligent automatic upgrading of software is realized based on multithreading |
-
2009
- 2009-05-14 CN CN2009100840910A patent/CN101887361A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068861A (en) * | 2015-07-09 | 2015-11-18 | 合肥君正科技有限公司 | Transaction execution method and device |
| CN109766131A (en) * | 2017-11-06 | 2019-05-17 | 上海宝信软件股份有限公司 | The system and method for the intelligent automatic upgrading of software is realized based on multithreading |
| CN109766131B (en) * | 2017-11-06 | 2022-04-01 | 上海宝信软件股份有限公司 | System and method for realizing intelligent automatic software upgrading based on multithreading technology |
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