CN102231124A - Method for guarding tasks of embedded system - Google Patents
Method for guarding tasks of embedded system Download PDFInfo
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- CN102231124A CN102231124A CN2011102020538A CN201110202053A CN102231124A CN 102231124 A CN102231124 A CN 102231124A CN 2011102020538 A CN2011102020538 A CN 2011102020538A CN 201110202053 A CN201110202053 A CN 201110202053A CN 102231124 A CN102231124 A CN 102231124A
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Abstract
The invention discloses a method for guarding tasks of an embedded system, comprising the following steps of: when equipment is started, starting guarding tasks, wherein the guarding tasks are used for scanning a system task list in real time; in the event of monitoring that other tasks do not send signals to the guarding tasks in a timed way, judging that the tasks are operated abnormally or quitted; at this time, according to configuration parameters of the tasks, restarting the tasks or the equipment; meanwhile, when guarded tasks to be monitored are started, needing to register to the guarding tasks; and informing time periods for sending signals in a timed way and response policies after the tasks are abnormal or quit to the guarding tasks, wherein the guarding tasks can return a globally unique management ID (Identification) to the tasks; and the guarded tasks need to send signals to the guarding tasks in a timed way. According to the method disclosed by the invention, a plurality of tasks of the embedded system can be monitored in real time; when the tasks are operated abnormally or quitted, the method can be used for monitoring and responding in time so that the system can return to normal more rapidly; the reliability of the equipment and the flexible abnormal response policies can be provided; and the tasks or the equipment can be restarted selectively according to the characteristics of the tasks.
Description
Technical field
The present invention relates to embedded system, especially the method for guardian system task.
Background technology
Along with the function of embedded device becomes increasingly complex, running in it of task is more and more.Can't monitor each concrete task after the device power operation; unusual or when withdrawing from when task run; thereby equipment can't get access to its relevant information and can't make relevant response and cause equipment operation in malfunction, and if this situation is for causing great accident on the embedded device that runs on some important events.
At present guarding of embedded system task just utilizes hardware watchdog that main task is guarded, and when the main task operation exception or when withdrawing from, equipment is restarted.The method can't monitor other task of system.Unusual or when withdrawing from when other task run, monitoring of equipment less than, also just can't restarting equipment or restart task, thus equipment work causes accident in abnormality.
Summary of the invention
Technical matters to be solved by this invention provides a kind of guard method of embedded system task; in the multitask running environment of embedded system; the task of running on system is monitored; unusual or when withdrawing from when the task run that monitors; can select to restart this task or restarting equipment according to user configuration, thereby make equipment work in just.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of guard method of embedded system task may further comprise the steps:
(1) when device start, starts the task of guarding;
(2) detect whether guard task list be empty, when task list is sky, wait for that other quilts that need monitor guard task start, at first needed to register by the task of guarding to the task of guarding, inform its time cycle of regularly signaling of the task of guarding and task abnormity or withdraw from after response policy, the task of guarding returns to the unique management ID of one the overall situation according to the log-on message of being guarded task;
(3) when task list is not sky, the scan task tabulation according to each log-on message of being guarded task, judges that it is received denys the overtime signal that do not send;
(4) when having monitored by the task of guarding is overtime when not sending signal, judge that this is guarded task unusually or withdraw from, guarded the log-on message of task according to this, this task or equipment are restarted in selection;
(5) when not monitored by the task of guarding is overtime when not sending signal, the instruction hardware watchdog rescans task list; Continue execution in step (2)～(4) then.
As improvement, guarded the response policy of task for restarting task or equipment in the described step (2).
As improvement, to be guarded task use and management ID regularly and sent signal to the task of guarding, it is normal that notice is guarded this task run of task.
The beneficial effect that the present invention is compared with prior art brought is:
1) can real time monitoring the multitask of embedded system, unusual or withdraw from and can in time monitor and can make response when task run, allow system recover faster normally to provide the reliability of equipment;
2) exception response strategy flexibly can select to restart task or restarting equipment according to the characteristics of task.
Description of drawings
Fig. 1 guards the program flow diagram of task for the present invention.
Fig. 2 is for being guarded the program flow diagram of task.
Embodiment
The present invention will be further described below in conjunction with Figure of description.
A kind of guard method of embedded system task as shown in Figure 1, may further comprise the steps:
(1) when device start, starts the task of guarding;
(2) as shown in Figure 2, whether task list is guarded in detection is empty, when task list is sky, wait for that other quilts that need monitor guard task start, at first needed to register by the task of guarding to the task of guarding, inform its time cycle of regularly signaling of the task of guarding and task abnormity or withdraw from after response policy promptly restart task or equipment, the task of guarding returns to the unique management ID of one the overall situation according to the log-on message of being guarded task; Guarded task use and management ID regularly and send signal to the task of guarding, it is normal that notice is guarded this task run of task;
(3) when task list is not sky, the scan task tabulation according to each log-on message of being guarded task, judges that it is received denys the overtime signal that do not send;
(4) when having monitored by the task of guarding is overtime when not sending signal, judge that this is guarded task unusually or withdraw from, guarded the log-on message of task according to this, this task or equipment are restarted in selection;
(5) when not monitored by the task of guarding is overtime when not sending signal, the instruction hardware watchdog rescans task list; Continue execution in step (2)～(4) then.
A kind of function of utilizing the embedded device hardware watchdog that proposes this patent realizes controlling the function of supervision to running on task on the equipment; unusual or when withdrawing from when monitoring task run; can select to restart this task or restarting equipment according to user's configuration, thereby make equipment work in normal condition.
Claims (3)
1. the guard method of an embedded system task is characterized in that: may further comprise the steps:
(1) when device start, starts the task of guarding;
(2) detect whether guard task list be empty, when task list is sky, wait for that other quilts that need monitor guard task start, at first needed to register by the task of guarding to the task of guarding, inform its time cycle of regularly signaling of the task of guarding and task abnormity or withdraw from after response policy, the task of guarding returns to the unique management ID of one the overall situation according to the log-on message of being guarded task;
(3) when task list is not sky, the scan task tabulation according to each log-on message of being guarded task, judges that it is received denys the overtime signal that do not send;
(4) when having monitored by the task of guarding is overtime when not sending signal, judge that this is guarded task unusually or withdraw from, guarded the log-on message of task according to this, this task or equipment are restarted in selection;
(5) when not monitored by the task of guarding is overtime when not sending signal, the instruction hardware watchdog rescans task list; Continue execution in step (2)～(4) then.
2. the guard method of a kind of embedded system task according to claim 1 is characterized in that:
Guarded the response policy of task for restarting task or equipment in the described step (2).
3. the guard method of a kind of embedded system task according to claim 1 is characterized in that:
Guarded task use and management ID regularly and send signal to the task of guarding, it is normal that notice is guarded this task run of task.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110202053.8A CN102231124B (en) | 2011-07-18 | 2011-07-18 | A kind of guard method of tasks of embedded system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110202053.8A CN102231124B (en) | 2011-07-18 | 2011-07-18 | A kind of guard method of tasks of embedded system |
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| CN102231124A true CN102231124A (en) | 2011-11-02 |
| CN102231124B CN102231124B (en) | 2017-08-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103645962A (en) * | 2013-12-18 | 2014-03-19 | 北京华环电子股份有限公司 | Watch-dog implementation method and device based on Nios II system |
| CN104484167A (en) * | 2014-12-05 | 2015-04-01 | 广州华多网络科技有限公司 | Task processing method and device |
| CN106484555A (en) * | 2016-09-29 | 2017-03-08 | 广东欧珀移动通信有限公司 | Abnormality detection and the method recovered and mobile terminal |
| CN106776202A (en) * | 2016-11-25 | 2017-05-31 | 广州日滨科技发展有限公司 | The monitoring method and system of embedded OS task |
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| CN101452420A (en) * | 2008-12-30 | 2009-06-10 | 中兴通讯股份有限公司 | Embedded software abnormal monitoring and handling arrangement and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645962A (en) * | 2013-12-18 | 2014-03-19 | 北京华环电子股份有限公司 | Watch-dog implementation method and device based on Nios II system |
| CN104484167A (en) * | 2014-12-05 | 2015-04-01 | 广州华多网络科技有限公司 | Task processing method and device |
| CN104484167B (en) * | 2014-12-05 | 2018-03-09 | 广州华多网络科技有限公司 | Task processing method and device |
| CN106484555A (en) * | 2016-09-29 | 2017-03-08 | 广东欧珀移动通信有限公司 | Abnormality detection and the method recovered and mobile terminal |
| CN106484555B (en) * | 2016-09-29 | 2019-05-17 | Oppo广东移动通信有限公司 | The method and mobile terminal of abnormality detection and recovery |
| CN106776202A (en) * | 2016-11-25 | 2017-05-31 | 广州日滨科技发展有限公司 | The monitoring method and system of embedded OS task |
| CN106776202B (en) * | 2016-11-25 | 2020-06-26 | 日立楼宇技术（广州）有限公司 | Method and system for monitoring tasks of embedded operating system |
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| CN102231124B (en) | 2017-08-29 |
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