CN105912447B - A kind of monitoring method of embedded program execution sequence - Google Patents
A kind of monitoring method of embedded program execution sequence Download PDFInfo
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- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3051—Monitoring arrangements for monitoring the configuration of the computing system or of the computing system component, e.g. monitoring the presence of processing resources, peripherals, I/O links, software programs
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Abstract
The invention discloses a kind of monitoring methods of embedded program execution sequence, the monitoring method is by setting embedded program the corresponding partial order mark of functions at different levels, regularly change the numerical value of corresponding partial order mark after each program statement of functions at different levels performs, after the function of each level performs, the exception that sentence is not performed is judged whether according to the numerical value of corresponding partial order mark.Using monitoring method of the present invention, program monitoring coverage can be effectively increased and can be used in the monitoring of the program execution order of arbitrary calling depth.
Description
Technical field
The invention belongs to embedded software Programs to perform surveillance technology field, and in particular to a kind of embedded program performs
The monitoring method of order.
Background technology
In embedded product, a program often wants continual operation for a long time, will not once generating mistake
Disconnected accumulation, when restarting system next time, mistake could eliminate, and serious failure long-term accumulation results even in product
Damage.Therefore the monitoring performed to program just seems extremely important, timely finds mistake, and takes effective solution,
Product itself is protected, prolongs the service life, also provides convenience for the use of user.
There are many monitoring method performed to program, and some by hardware watchdog realizes and monitor that some is in software code
Key position adds the judgement of some flag bits to detect the level of enforcement of program, also has plenty of and carries out piecemeal to code, only
Sequential monitoring is carried out the execution block code.Often there are more failure residuals for these modes, it is impossible to which every is instructed
Sentence is monitored, and in the more complicated embedded system of function call level, can not be detected by these methods,
It is even more impossible to timely processings, exclude hidden danger.
The content of the invention
The purpose of the present invention is to solve defects in the prior art, and program prison can be effectively increased by providing one kind
Control coverage and the monitoring method that can be used in the program execution order of arbitrary calling depth.
In order to achieve the above object, the present invention provides a kind of monitoring method of embedded program execution sequence, by right
The corresponding partial order mark of each level function sets of embedded program is performed in each program statement of each level function
After regularly change the numerical value of corresponding partial order mark, after the function of each level performs, according to correspondence
The numerical value of partial order mark judge whether the exception that sentence is not performed.
Monitoring method of the present invention can also be by setting embedded program global sequence indicia and the corresponding office of function at different levels
Portion's sequence indicia regularly changes corresponding partial order mark after each program statement of functions at different levels performs
Numerical value, after the function of each level performs, sentence is judged whether according to the numerical value of corresponding partial order mark
The exception not being performed；When occurring abnormal, change the global sequence indicia of embedded program, and checking global sequence indicia
As abnormality processing during judgement.
The monitoring method of embedded program execution sequence of the present invention, including step in detail below：
（1）The global sequence indicia of embedded program is defined, and assigns preset value；
（2）At the function entrance that each level is performed in embedded program, judge whether global sequence indicia is default
Value, if preset value, then execution sequence mistake does not occur for present procedure, continues the execution of next statement, if not preset value is then deposited
Execution sequence mistake, it is necessary into exception handler；
（3）Whether inspection needs the function of execution newly to define level function：Whether discriminant function is the upper level returned
Function or the defined next stage function of nesting allocation；If not, to need new definition level function, into next step；Such as
It is then to enter step（5）；
（4）It is new as needed to define level function, the partial order mark of the level is defined, and assigns initial value；
（5）Perform first non-program statement for sequential monitoring in current function；It determines whether that function is nested to adjust
With if nothing, continuing the execution of next statement, if so, return to step（2）, often return and once represent in current level letter
Nested next level function in number；
（6）After a upper program statement performs, the numerical value of the partial order mark of the level function is changed；
（7）Step 4 is repeated to be finished to 6 to current level function；
（8）Whether the partial order mark that the current tail end for performing the level function completed compares the level function is correct：
If there is mistake in the numerical value of partial order mark, then it represents that there is the sentence that perform and is not performed or mistakenly repeats
Multiple sentence is performed, the numerical value of global sequence indicia is changed（It is allowed to not be preset value）, direct return to step（2）It checks
Global sequence indicia, if not preset value then enters exception handler；If the numerical value of partial order mark does not occur mistake,
Represent that all sentences that should be performed all correctly have performed, into next step；
（9）Check whether currently performed function is nested in upper level function, if it is, returning to upper level letter
Number, i.e. return to step（3）；If it is not, then represent that this monitoring terminates.
From above-mentioned steps, pass through step（5）To step（2）It returns, next level function nesting can be continuously increased,
Pass through step（9）To step（2）It returns, upper level function can be constantly returned to, in step（2）And step（9）Between can be real
Existing Multi-nesting and multiple upper layer grade function return, until the last most last layer grade function that reaches is finished.Therefore, originally
Monitoring method realizes multi-layer function order monitoring complicated in embedded program.
Above-mentioned overall situation sequence indicia, for judging whether whole system Program execution sequence exception, preset value occurs
For arbitrary hexadecimal positive integer, such as 0x55U.
Partial order mark, for judging whether the execution sequence in current function exception occurs, initial value is arbitrarily just
Integer.In general, the initial value of partial order mark can be generally assigned to 1.
The numerical value of partial order mark is sexually revised using rule, and such as regularity is incremented by（Add 1 plus 2 etc.）Or successively decrease（Subtract 1,
Subtract 2）Or carry out cycling assignment.When carrying out cycling assignment, refer to cycle sequence indicia according to the numerical value in particular list
Assignment, the numerical value in particular list arbitrarily set the length of list as needed, specific to cycle assignment list in concrete application
It can be defined as " 1,2,3,4,5,6,7,8,9,10 ".According to the order in list after every sentence is performed to partial order mark
Will changes, if the number in list is finished, first continuation for returning to list is right after every sentence of execution in sequence
Partial order mark changes.
Preferred embodiment is：After each sentence performs, 1 is added to the numerical value of local sequence indicia, it so can basis
The numerical value of partial order mark is judged to perform sentence quantity.
Step（8）In to making above-mentioned processing after the program statement of the function of each level of embedded program, be partial order
The numerical value of mark changes sentence and covers in each program statement of each level function.
Step（2）In abnormality processing for cpu reset or into abnormal interrupt service routine or generate diagnostic message use
In showing or notify third party's device and equipment.
The present invention has the following advantages compared with prior art：The present invention can carry out the execution sequence of arbitrary level function
Monitoring, every sentence is contracted to the monitoring of program, local suitable to being carried out after every sentence by the function of each level
The execution sequence situation that can monitor each every sentence of level under arbitrarily complicated system, this method are realized in the change of sequence mark
The coverage rate to program statement is greatly improved, and can flexibly be applied under complication system, it is deep from function call
The limitation of degree.
Description of the drawings
Fig. 1 is the monitoring method flow chart of embedded program execution sequence of the present invention；
Fig. 2 is the embedded program call relation schematic diagram of the application present invention；
Fig. 3 is the logic relation picture that embedded program shown in Fig. 2 carries out program execution order monitoring using the present invention.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the monitoring method of embedded program execution sequence of the present invention concretely comprises the following steps：
The judgement of global sequence indicia, such as mistake are carried out at function entrance（It is not preset value）Abnormality processing is then carried out,
Correctly judging whether this function after is returned by next level function, if not then defining new partial order mark（Make
To define for the first time, then the level respective function is top layer's grade function）, and initial value is assigned to the new partial order mark, then
Into in next step, if by the return of next level function, it is directly entered in next step；
Then, this level function is performed；If there is nesting allocation grade function in this level function, into next level letter
Number still first judges global sequence indicia, such as mistake（It is not preset value）Abnormality processing is then carried out, is correctly reexamined execution
Function is to need new definition level function, just directly performs this function if not, if it is the sub- grade function is defined new
Partial order mark and assign initial value, then perform this level function, and perform this level function and also have nesting allocation function, then after
It is continuous to enter next level function, cycle above-mentioned nesting allocation function step；If other sub- grade functions of this level function never call,
It continues to execute, this grade of partial order mark is changed after each program statement execution of each level function, is entered
In next step；
Judge whether that all functions of this level have all performed, check that this level partial order mark is if having performed
No wrong, mistake then changes global sequence indicia numerical value, and when checking that global sequence indicia judges as abnormality processing, just
It is true then check whether currently performed function is nested in upper level function, if so, returning to upper level function, that is, return to
Above-mentioned Overall Steps are repeated at the function entrance of front, if it is not, then representing that this monitoring terminates, also indicate that the function of all levels
Order is run correct.
As shown in Fig. 2, by taking 3 levels as an example, the division of embedded program function level and function calling relationship are shown
Meaning, as seen from the figure, this method can be used in the programming system of arbitrary calling depth, define 3 levels, and each level includes N number of
Function statement, each level uses a partial order mark, in a level, by the function statement in the level
Afterwards plus change sequence indicia sentence, it is just suitable to the part of this grade by changing sequence indicia sentence often to have performed a function statement
The numerical value of sequence mark changes once, after all sentences of the level perform, whether just to check the numerical value of the partial order mark
Really, the mission function after continuing if correct, if mistake occurs in the numerical value of partial order mark, to global sequence indicia
Numerical value changes, and the mistake of execution sequence can be detected in the inlet of function, and enter exception handler, at wait
Reason.
As shown in figure 3, the example flow diagram of execution sequence monitoring is carried out using the present invention for embedded program in Fig. 2, it is first
First judge whether global sequence indicia is correct at the function entrance, into abnormality processing if mistake, if after correctly performing
Continuous function statement defines the partial order mark of level 1, assigns initial value to the partial order mark, initial value for one or arbitrary just
Integer performs first function statement 1-1 in the level afterwards, because there is function nesting at this, therefore turns in level 2, still
First judge global sequence indicia whether mistake, sequential monitoring process is as previously mentioned, define the partial order mark of level 2, to layer
The partial order mark of grade 2 assigns initial value, performs function statement 2-1, because nested where there is function, jump to level 3, first examines
Look into whether whole sequence indicias are correct, the partial order mark of level 3 defined after correct, then performs function statement 3-1,3-2,
And change the numerical value of the partial order mark of this level after each sentence is performed, if there is mistake in partial order mark
Change global sequence indicia value, and jump at the function entrance, global sequence indicia exception will be detected, and entered abnormal
Processing, if correctly, need to return to previous 2 corresponding position of level, the function statement of level performs where continuing, and changes institute after returning
Partial order flag values in level 2（Such as workflow graph frame 250）, function statement 2-2 is performed, changes partial order mark,
It goes at function 2-N, when going to function statement 2-N, because occurring function nesting again herein, therefore jumps in this order
Level 3, continues to execute function statement 3-3 to 3-N, and every sentence changes the numerical value of the partial order mark of the level after performing
Become, if mistake occurs in partial order mark, change global sequence indicia, and jump at the function entrance, will be detected
Global sequence indicia is abnormal, and enters abnormality processing.If 3 all sentences of level examine the partial order mark of the level after performing
After looking into correctly, the corresponding position of previous level 2 is returned to, the function statement of level performs where continuing, layer where after change return
Partial order flag values in grade 2（Such as workflow graph frame 290）, judge that all function statements of level are finished, check level 2
Partial order mark, correctly then return to level 1, change the partial order flag values of level 1（Such as workflow graph frame 150）, hold
Line function 1-2 to 1-N changes the numerical value of the partial order mark of level 1 after every function statement performs, and in the level
All function statements detect partial order flag values after being finished, and mistake then changes global program's sequence indicia, jumps to
At the function entrance, global sequence indicia exception will be detected, and into abnormality processing, correctly then this monitoring terminates.
It can be seen from the above description that this method is suitable for arbitrarily complicated system, from function call depth limit, energy
It is enough that each sentence is monitored, reach high coverage rate, it is ensured that the correctness of each program executing sequence；Together
When, partial order mark mistake is likely to occur each time for above-mentioned, and system also can according to error log when occurring abnormal
The function of order of occurrence mark mistake is oriented, facilitates the inquiry, processing and correction of abnormal cause.
It is indicated except no special, the feature of method described herein can be combined with each other.
Although listing the implementation example of part herein, those skilled in the art is without departing substantially from the scope of the present invention
Under, alternating combines or any equivalent alternative implementation example described herein of method for realizing the present invention.The application
Any variation or change of the concrete principle method and specific embodiment that are intended to include discussed in text.Therefore, it is of the invention
Only be subject to claim and its equivalent limited.
Claims (3)
1. a kind of monitoring method of embedded program execution sequence, which is characterized in that including step in detail below：
（1）The global sequence indicia of embedded program is defined, and assigns preset value；
（2）At the function entrance that each level is performed in embedded program, judge whether global sequence indicia is preset value, if
For preset value, then execution sequence mistake does not occur for present procedure, continues the execution of next statement, is held if not preset value then exists
The mistake of row order is, it is necessary into exception handler；
（3）Whether inspection needs the function of execution newly to define level function：Whether discriminant function is the upper level function returned
Or the defined next stage function of nesting allocation；If not, to need new definition level function, into next step；If so, then
It enters step（5）；
（4）It is new as needed to define level function, the partial order mark of the level is defined, and assigns initial value；
（5）Perform first non-program statement for sequential monitoring in current function；Determine whether function inset call, such as
Fruit is without continuing the execution of next statement, if so, return to step（2）, often return and once represent embedding in current level function
Next level function is covered；
（6）After a upper program statement performs, the numerical value of the partial order mark of the level function is changed, is shifted gears
Using adding 1 to local sequence indicia or carry out cycling assignment；
（7）Step 4 is repeated to be finished to 6 to current level function；
（8）Whether the partial order mark that the current tail end for performing the level function completed compares the level function is correct：If office
There is mistake in the numerical value of portion's sequence indicia, then it represents that there is the sentence that perform and is not performed or mistakenly repeats
Multiple sentence changes the numerical value of global sequence indicia, direct return to step（2）Global sequence indicia is checked, if not default
Value then enters exception handler；If the numerical value of partial order mark does not occur mistake, then it represents that all sentences that should be performed
It all correctly performs, into next step；
（9）Check whether currently performed function is nested in upper level function, if it is, returning to upper level function, i.e.,
Return to step（3）；If it is not, then represent that this monitoring terminates.
2. monitoring method according to claim 1, which is characterized in that it is described the overall situation sequence indicia preset value for 16 into
Number processed；The initial value of the partial order mark is positive integer.
3. monitoring method according to claim 1, it is characterised in that：The step（2）In abnormality processing answered for CPU
Position is used to showing or notifying third party's device and equipment into abnormal interrupt service routine or generation diagnostic message.
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| CN108646708B (en) * | 2018-05-02 | 2020-05-22 | 阳光电源股份有限公司 | Program flow monitoring method and system |
| CN109388563A (en) * | 2018-09-26 | 2019-02-26 | 北京广利核系统工程有限公司 | Safe and reliable nuclear safe level DCS software execution sequence monitoring method and system |
| CN111474913B (en) * | 2019-01-23 | 2021-07-20 | 北京新能源汽车股份有限公司 | Program operation monitoring method and device and electric automobile |
| CN110727263B (en) * | 2019-10-31 | 2021-02-26 | 南方电网调峰调频发电有限公司 | Method for overhauling abnormal equipment action sequence and monitoring signal jitter state |
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| CN105468517A (en) * | 2015-11-10 | 2016-04-06 | 中国矿业大学 | Statistical error positioning method based on reduction of black-box test case |
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Address after: Water Pavilion Road Jiangning District moling street Nanjing City, Jiangsu province 211100 No. 1266 Patentee after: Nanjing Keyuan Intelligent Technology Group Co.,Ltd. Address before: Water Pavilion Road Jiangning District moling street Nanjing City, Jiangsu province 211100 No. 1266 Patentee before: NANJING SCIYON AUTOMATION GROUP Co.,Ltd. |
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