CN101072124A - Log obtaining method - Google Patents
Log obtaining method Download PDFInfo
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- CN101072124A CN101072124A CN 200710075185 CN200710075185A CN101072124A CN 101072124 A CN101072124 A CN 101072124A CN 200710075185 CN200710075185 CN 200710075185 CN 200710075185 A CN200710075185 A CN 200710075185A CN 101072124 A CN101072124 A CN 101072124A
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Abstract
The method is applicable to multitask system of possessing authorization for accessing file system and obtaining files. The method includes steps: (1) setting up threshold value of log data in internal memory; (2) when a task needs to print log, the method stores data of log to internal memory; (3) determining capacity of data smaller than the said threshold, and returning back the multitask system, continuing processing each task; other executing step (4); (4) writing the said data to log file in use for storing log data. The invention solves issues of malposed, repeated and lost log. When fault occurs, analyzing log correctly can locate position of fault. Thus, the invention discloses method of solving fault for user effectively.
Description
Technical field
The present invention relates to the multitask embedded system, in particular, a kind of method of in the multitask embedded system, obtaining daily record.
Background technology
Obtaining log (daily record) in the multitask embedded system is meant in system's running, note in each task run process the path and the value of each each state of variable at that time of process, be in order when breaking down, to analyze according to log, judge system operation the path of process whether correct, and whether each variable is normal with each state value, thereby the place of orienting problem.
In the prior art, the method for obtaining 1og that adopts in the multitask embedded system as shown in Figure 1, the task that each priority is different, for example task I and task J are by data are sent in the print out task, and then output on the terminal by print out task.As shown in Figures 2 and 3, because the priority difference of each task that will print in the system, these tasks are different again with the priority of print out task, thereby cause the log that finally sees dislocation to occur from terminal, repeat, and the problem of losing, that is to say and can't correctly effectively write down the sequential that each task is carried out, when breaking down, also can't carry out correct analysis, also just can't correctly orient the problem place certainly log.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
The object of the present invention is to provide a kind of method of obtaining daily record, being applied to can the access file system and obtain in the multitask system of file, can correctly, effectively obtain the daily record of system.
Technical scheme of the present invention is as follows:
A kind of method of obtaining daily record is applied to have the access file System Privileges and obtains in the multitask system of file, and it comprises step: A1, the threshold value of data shared capacity in internal memory of daily record is set; A2, when a task needs print log, with the storage of described daily record to internal memory; The capacity of A3, the described data of judgement returns described multitask system less than described threshold value, continues to handle each task, otherwise execution in step A4; A4, described data are write the journal file that is used for storing daily record data.
Described method, wherein, described steps A 4 specifically comprises: create the journal file that is used for storing daily record data, described data are write described journal file.
Described method, wherein, also comprise steps A 5: the user calls described journal file.
Described method, wherein, described steps A 1 also comprises: adjust described threshold value according to memory size.
Described method, wherein, described steps A 1 also comprises: dynamically adjust described threshold value according to memory size.
Described method, wherein, described steps A 4 also comprises: return described multitask system, continue to handle each task.
Adopt such scheme, the invention solves log and dislocation occurs, repeat, and the problem of losing, when breaking down by log is carried out correct analysis, thereby can correctly orient the problem place, provide effective solution for the user fixes a breakdown.
Description of drawings
Fig. 1 is the method schematic diagram that obtains log of prior art;
Fig. 2 is the wrong log file schematic diagram of prior art;
Fig. 3 is the contrast schematic diagram of the correct log file of prior art;
Fig. 4 is the method schematic diagram that obtains log of the present invention;
Fig. 5 is the flow chart of the inventive method.
Embodiment
Below preferred embodiment of the present invention is described in detail.
As shown in Figure 5, the invention provides a kind of method of obtaining daily record, be applied to have the access file System Privileges and obtain in the multitask system of file, it comprises step:
A1, the threshold value of data shared capacity in internal memory of daily record is set; The user can be provided with described threshold value (threshold voluntarily, also claim threshold values), can also adjust the size of described threshold value according to memory size, also can be by system according to the automatic size of adjusting described threshold value of memory size, the present invention does not limit the application of these concrete modes.
A2, when a task needs print log, with the storage of described daily record to internal memory;
The capacity of A3, the described data of judgement returns described multitask system less than described threshold value, continues to handle each task, otherwise execution in step A4;
A4, described data are write the journal file that is used for storing daily record data.Described steps A 4 specifically comprises: create the journal file that is used for storing daily record data, described data are write described journal file.Log data stacks can be write in the same journal file, also can be during greater than described threshold value at the capacity of described data, a newly-built journal file writes described data in the new journal file.Described steps A 4 can also comprise: return described multitask system, continue to handle each task.
Method of the present invention can also comprise steps A 5: the user calls described journal file, analyzes detailed content wherein, thereby fixes a breakdown.
For example, particularly, as shown in Figure 4, this method is described below:
(1) certain task I or the task J in the executive system;
(2) when task I or task J will print log, earlier data directly are kept in the internal memory, judge that then whether the log size of preserving in the current internal memory surpasses threshold values (threshold also claims threshold value), if surpass, then forwards step (3) to; If do not surpass, then get back to step (1), so repeatedly;
(3) log in the internal memory is saved in the file system, gets back to step 1, so repeatedly;
Because when each task will be printed log, all be directly to be kept at data in the internal memory, do not relate to the switching of task, when reaching a certain size, data volume writes file, thereby guaranteed the sequential of log, can correctly effectively get access to our needed log, the dislocation of log can not occur, repeat, perhaps lose.
Because originally printed log also is a task, and a priority is also arranged, each task will relate to when printing and print out task between task switch, thereby cause the log of some tasks to repeat, the log of some tasks loses.And the inventive method does not just relate to the switching between each task and the print out task by writing direct internal memory, has guaranteed the sequential of log.
The present invention can determine the size of each log file by setting threshold values, the frequency of can be more rational definite access file system, and file system is read in can be not frequent write; When breaking down by analyzing the place that log that this kind method obtains can correct positioning goes wrong.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (6)
1, a kind of method of obtaining daily record is applied to have the access file System Privileges and obtains in the multitask system of file, and it comprises step:
A1, the threshold value of data shared capacity in internal memory of daily record is set;
A2, when a task needs print log, with the storage of described daily record to internal memory;
The capacity of A3, the described data of judgement returns described multitask system less than described threshold value, continues to handle each task, otherwise execution in step A4;
A4, described data are write the journal file that is used for storing daily record data.
2, method according to claim 1 is characterized in that, described steps A 4 specifically comprises: create the journal file that is used for storing daily record data, described data are write described journal file.
3, method according to claim 1 is characterized in that, also comprises steps A 5: the user calls described journal file.
4, method according to claim 1 is characterized in that, described steps A 1 also comprises: adjust described threshold value according to memory size.
5, method according to claim 1 is characterized in that, described steps A 1 also comprises: dynamically adjust described threshold value according to memory size.
According to the arbitrary described method of claim 1 to 5, it is characterized in that 6, described steps A 4 also comprises: return described multitask system, continue to handle each task.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710075185 CN101072124A (en) | 2007-06-22 | 2007-06-22 | Log obtaining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710075185 CN101072124A (en) | 2007-06-22 | 2007-06-22 | Log obtaining method |
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| Publication Number | Publication Date |
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| CN101072124A true CN101072124A (en) | 2007-11-14 |
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| CN 200710075185 Pending CN101072124A (en) | 2007-06-22 | 2007-06-22 | Log obtaining method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010099754A1 (en) * | 2009-03-06 | 2010-09-10 | 成都市华为赛门铁克科技有限公司 | Log information transmission method and apparatus |
| CN102209134A (en) * | 2010-03-30 | 2011-10-05 | 深圳富泰宏精密工业有限公司 | System and method for automatically retrieving log |
| CN102521070A (en) * | 2011-11-18 | 2012-06-27 | 深圳中兴网信科技有限公司 | Mirror image recovering method of journal information based on internal memory |
| CN102609484A (en) * | 2012-01-19 | 2012-07-25 | 北京神州数码思特奇信息技术股份有限公司 | General method for managing log of system |
| CN102769546A (en) * | 2012-08-01 | 2012-11-07 | 北京经纬恒润科技有限公司 | Method and system for message segmentation storage |
| CN103176888A (en) * | 2011-12-22 | 2013-06-26 | 阿里巴巴集团控股有限公司 | Log recording method and log recording system |
| CN103226340A (en) * | 2013-04-16 | 2013-07-31 | 深圳市汇川控制技术有限公司 | Programmable logic controller and realization method |
| CN107995234A (en) * | 2016-10-26 | 2018-05-04 | 北京国双科技有限公司 | Data transmission method and device |
| CN111063195A (en) * | 2019-11-19 | 2020-04-24 | 珠海市德宇辉煌信息科技有限公司 | License plate recognition device and system |
-
2007
- 2007-06-22 CN CN 200710075185 patent/CN101072124A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010099754A1 (en) * | 2009-03-06 | 2010-09-10 | 成都市华为赛门铁克科技有限公司 | Log information transmission method and apparatus |
| CN102209134A (en) * | 2010-03-30 | 2011-10-05 | 深圳富泰宏精密工业有限公司 | System and method for automatically retrieving log |
| CN102521070A (en) * | 2011-11-18 | 2012-06-27 | 深圳中兴网信科技有限公司 | Mirror image recovering method of journal information based on internal memory |
| CN103176888A (en) * | 2011-12-22 | 2013-06-26 | 阿里巴巴集团控股有限公司 | Log recording method and log recording system |
| CN103176888B (en) * | 2011-12-22 | 2018-01-23 | 阿里巴巴集团控股有限公司 | A kind of method and system of log recording |
| CN102609484A (en) * | 2012-01-19 | 2012-07-25 | 北京神州数码思特奇信息技术股份有限公司 | General method for managing log of system |
| CN102769546A (en) * | 2012-08-01 | 2012-11-07 | 北京经纬恒润科技有限公司 | Method and system for message segmentation storage |
| CN103226340A (en) * | 2013-04-16 | 2013-07-31 | 深圳市汇川控制技术有限公司 | Programmable logic controller and realization method |
| CN107995234A (en) * | 2016-10-26 | 2018-05-04 | 北京国双科技有限公司 | Data transmission method and device |
| CN107995234B (en) * | 2016-10-26 | 2021-08-10 | 北京国双科技有限公司 | Data transmission method and device |
| CN111063195A (en) * | 2019-11-19 | 2020-04-24 | 珠海市德宇辉煌信息科技有限公司 | License plate recognition device and system |
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