CN1908906A - Method for monitoring software operation state - Google Patents
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Abstract
The disclosed monitor method for software running comprises: creating register tack list, defining one mark to label whether there is operating on the list; monitoring the initiation, registering target task; repeated checking the register task list by the monitor task to decide whether there is abnormal register task; yes to enter the abnormal handling. This invention can monitor multiple running tasks and handles different abnormal.
Description
Technical field
The present invention relates to a kind of method that the running status of software is monitored, especially relate to the method for supervising of software operation state under a kind of multitask environment.
Background technology
In single task software, house dog (Watchdog) technology is a kind of technology of monitoring software running status of comparative maturity.In the system that adopts watchdog technique, a hardware watchdog counter that is independent of CPU (central processing unit) is arranged, after powering on, this house dog counter begins counting, the CPU that can reset when overflowing, this just requires software regularly to empty this house dog counter.If software does not empty the house dog counter on time, think that then this software enters abnormality, the house dog counter CPU that can overflow and reset, thus reset software.
When adopting watchdog technique in the multitask software, each task all can regularly empty the house dog counter in the system, to reach all monitored purpose of each task.Yet, adopt watchdog technique can produce following several respects problem in the multitask software: when certain task enters abnormality in the software, though this task does not empty the house dog counter, but other tasks can regularly empty the house dog counter, thereby cause the supervisory function bit of watchdog technique to lose efficacy; The task that the software medium priority is high frequently obtains right of execution, and the task of low priority can not get operation, because the high task of priority can empty the house dog counter, this makes watchdog technique can't monitor software and enters abnormality.In addition, watchdog technique abnormality processing means are too single, after software enters abnormality, and the house dog counter CPU that just simply resets, not other abnormality processing means.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of method for supervising of software operation state, adopt the present invention can distinguish the running status of monitoring each task in the multitask software independently, and can make corresponding abnormality processing at different abnormal conditions.
In order to solve the problems of the technologies described above, the invention provides a kind of method for supervising of software operation state, this method is monitored the running status of corresponding task in the software by computer system, comprise that at least one registered task, priority are higher than the monitor task of registered task, registered task tabulation and mutex, performing step is as follows:
(a1) structure registered task tabulation, and define one be used to identify whether have task operating registered task tabulation sign as mutex, registered task tabulation empties counter number of times record by representing separately each node of registered task to form in the packets of information explanatory note in brackets volume task name of each node preservation, abnormality processing function pointer, rolling counters forward, counter thresholding, the sense cycle;
(a2) monitor task initialization registered task tabulation, need monitored task after registration, to become registered task then, registration process is not used in the node for of the information that comprises registered task name, abnormality processing function pointer, counter thresholding that this task provided being saved in the registered task tabulation, can empty the rolling counters forward in this node after the registered task operation;
(a3) monitor task judges whether to exist the registered task of abnormality according to the tabulation of certain time interval rechecking registered task, if exist, enters corresponding abnormality processing according to the abnormality processing function pointer of preserving in the node.
Further, this method also has following characteristics: the information that each node is preserved also comprises the node service marking, if this node uses, then the node service marking is true.
Further, this method also has following characteristics, and monitor task is tabulated to registered task and checked that the time interval of judgement is a sense cycle, and its monitoring logic comprises the steps:
(b1) whether the node service marking of inspection present node is true, if true, execution in step (b2), otherwise execution in step (b5);
(b2) check whether empty counter number of times record in the sense cycle of present node is zero, if zero, execution in step (b3) then, otherwise execution in step (b5);
(b3) rolling counters forward adds 1, and detects this rolling counters forward value and whether surpass its counter thresholding, if surpass, and execution in step (b4) then, otherwise execution in step (b5);
(b4) judge that the registered task that this node is represented is in abnormality, and enter corresponding abnormality processing according to the abnormality processing function pointer of preserving in this node;
(b5) check next node in the registered task tabulation, repeating step (b1) is to (b5), the detection of all nodes in finishing the registered task tabulation.
Further, this method also has following characteristics: the information that each node is preserved also comprises and empties counter number of times high threshold and empty counter number of times low threshold, and the information that registered task is saved to the registered task tabulation in registration process also comprises and empties counter number of times high threshold and empty counter number of times low threshold.
Further, this method also has following characteristics, and monitor task is tabulated to registered task and checked that the time interval of judgement is a counting interval, and several counting intervals are formed a sense cycle, and its monitoring logic comprises the steps:
(c1) whether the node service marking of inspection present node is true, if true, execution in step (c2), otherwise execution in step (c7);
(c2) check in the sense cycle of present node to empty whether the counter number of times that empties in the current counting interval is zero in the counter number of times record, if zero, execution in step (c3) then, otherwise execution in step (c5);
(c3) rolling counters forward adds 1, and detects this rolling counters forward value and whether surpass its counter thresholding, if surpass, and execution in step (c4) then, otherwise execution in step (c7);
(c4) judge that the registered task that this node is represented is in abnormality, and enter corresponding abnormality processing, then execution in step (c7) according to the abnormality processing function pointer of preserving in this node;
(c5) judge whether to finish a sense cycle, if, execution in step (c6), otherwise execution in step (c7);
(c6) add up and empty counter number of times record in the sense cycle of this node, if accumulation result is greater than emptying counter number of times high threshold or less than emptying counter number of times low threshold, the registered task of then judging this node representative is in abnormality, and enters corresponding abnormality processing according to the abnormality processing function pointer of preserving in this node;
(c7) check next node in the registered task tabulation, repeating step (c1) is to (c7), the detection of all nodes in finishing the registered task tabulation.
Further, this method also has following characteristics: monitor task initialization registered task tabulation operation comprises that the node service marking with each node in the registered task tabulation is not changed to use, and with other information zero clearings in the node.
Further, this method also has following characteristics: the data structure that realizes the registered task tabulation is tabulation, array or chained list; The specific implementation form of described monitor task and registered task can be process, process, the thread in the operating system, or is the Interrupt Process of processor, or the functional module for independently writing; The way of realization of described mutex comprises the mutex that variable, register and operating system provide, and monitor task or each registered task must at first obtain this mutex before the tabulation of operation registered task.
Further, this method also has following characteristics, and when registered task does not need can nullify it when monitored again, log off procedure comprises the steps:
(d1) obtain mutex;
(d2) in registered task tabulation, find the node of this registered task information of preservation according to the registered task name, the node service marking of node is installed not to be changed to use, and remaining nodal information zero clearing;
(d3) discharge mutex.
Compared with prior art, the present invention has the following advantages:
A, because the present invention carries out rolling counters forward by registered task tabulation respectively to each registered task, and judge according to the counter thresholding of setting, thereby can eliminate influencing each other between the registered task, monitoring when realizing to a plurality of registered task running status;
B, since the present invention in can provide the abnormality processing function pointer by registered task, thereby can provide abnormality processing means flexibly, neither be subjected to the restriction of house dog hardware capability, also be not subjected to the restriction of the specific implementation of monitor task, registered task can adopt any abnormality processing means neatly according to the demand of self;
Empty counter records in C, the sense cycle by the accumulative total registered task, can obtain the information that registered task takies CPU time, when the registered task operation is too frequent or very few, can regulates by abnormality processing function, thereby can make running software more steady.
Description of drawings
Fig. 1 is the data structure synoptic diagram of registered task tabulation among the present invention;
Fig. 2 is a block diagram of the present invention;
Fig. 3 is a monitoring logic operational flow diagram among the present invention.
Embodiment
In order to understand the present invention in depth, the present invention is described in detail below in conjunction with drawings and the specific embodiments.
The registered task tabulation is a kernel data structure of the present invention, is the tabulation that is used to preserve registered task information, can also adopt the different pieces of information structure to realize the registered task tabulation, as array or chained list.The size of registered task tabulation is by the quantity decision of registered task.
In embodiments of the invention, the registered task tabulation is made up of a plurality of nodes, as shown in Figure 1, each node is preserved the information of a registered task, and the information that node is preserved comprises that emptying the counter number of times in node service marking, registered task name, abnormality processing function pointer, rolling counters forward, counter thresholding, the sense cycle writes down, empties counter number of times high threshold and empty counter number of times low threshold.
Wherein, whether the node service marking has been used to preserve the sign of a registered task information for this node;
The identifier of registered task registered task by name in the registered task tabulation;
The abnormality processing function pointer is the means that monitor task carries out abnormality processing, can be set flexibly according to self needs by registered task;
Rolling counters forward is to preserve the current counting of the counter of this registered task tabulation node, and the monitor task major cycle moves once, and counter adds 1, and the counting interval is defined as required time of monitor task major cycle operation;
Described counter gate is limited to the maximum count value of counter, is provided by registered task, if rolling counters forward surpasses this value, monitor task decidable registered task enters abnormality;
Empty counter number of times record in the sense cycle and be meant that registered task empties the counter number of times in each counting interval in a sense cycle, sense cycle is the time interval that monitor task accumulative total registered task empties the counter number of times, a sense cycle can be made up of several counting intervals, and emptying the counter number of times is the number of times of registered task with the rolling counters forward zero clearing;
Emptying counter number of times high threshold, emptying counter number of times low threshold is registered task empties the counter number of times in a sense cycle maximal value and minimum value, provide by registered task, if empty the counter number of times in the sense cycle greater than emptying counter number of times high threshold, perhaps less than emptying counter number of times low threshold, monitor task thinks that registered task enters abnormality.
As shown in Figure 2, the present invention monitors the running status of corresponding task in the software by computer system, its ingredient comprises monitor task, at least one registered task, mutex and registered task tabulation, and the priority of monitor task is higher than all registered tasks.Wherein, monitor task is the task of monitoring registered task running status, and registered task then is meant the task of monitored Mission Monitor.The priority of monitor task is higher than all registered tasks, is not registered task and blocks to guarantee it.Described task is meant and takies the relatively independent part of working time of processor in the computer system in the software, its specific implementation form can be process, process, the thread in the operating system, or the Interrupt Process of processor, or the functional module of independently writing, but be not limited to above several form.Described mutex is one and is used for identifying the sign that whether has task operating the registered task tabulation that can adopt various ways to realize this mutex, as the mutex that variable, register or operating system provide, this does not change the spirit and scope of the invention.Because monitor task and all registered task co-operate registered tasks tabulation among the present invention, so adopt mutex to guarantee the consistance of data in the registered task tabulation; Therefore, task must be obtained this mutex earlier, could operate the registered task tabulation then.
By means of this method of computer system operation in start-up course to registered task tabulation memory allocated space, construct the registered task tabulation, and define a global variable as mutex, start monitor task then, monitor task need be finished following two parts work, at first be the initial work of finishing the registered task tabulation at initial phase, the process of initialization registered task tabulation comprises the steps:
Step 11 is obtained mutex;
Step 12 is not changed to the node service marking of all nodes in the registered task tabulation and uses, with other information zero clearings in the node;
Step 13 discharges mutex.
Secondly, after finishing the registered task list initialization, monitor task enters major cycle, among the present invention required time of monitor task major cycle operation is defined as the counting interval, moves major cycle repeatedly according to the counting interval, and major cycle comprises the steps:
Step 21 is obtained mutex;
Step 22, the operation monitoring logic, this monitoring logic will be explained hereinafter explanation as shown in Figure 3;
Step 23 discharges mutex;
Step 24 after time-delay a period of time, allows other task run, in this section delay time registered task can register, operations such as zero clearing and cancellation, return step 21.
Monitor task is finished after the registered task list initialization, just can start can be monitored task, can monitored task such as the needs monitoring then must registration, become registered task after succeeding in registration, the work that registered task is finished is for registering, emptying counter and cancellation, and wherein Zhu Ce process comprises the steps:
Step 31 is obtained mutex;
Step 32 is sought a node service marking and is the ont yet node of usefulness in registered task tabulation;
Step 33, the information that the monitored task of these needs is provided is saved in the node described in the step 32, described packets of information explanatory note in brackets volume task name, abnormality processing function pointer, counter thresholding, empties counter number of times high threshold, empties counter number of times low threshold;
Step 34 is changed to the node service marking of node described in the step 32 and uses;
Step 35 discharges mutex.
Registered task can be at any time, empties counter according to self needs, and registered task can move and once empty counter once or for several times, also can move just to empty once for several times, and the process that empties counter comprises the steps:
Step 41 is obtained mutex;
Step 42 finds the node of this registered task information of preservation in registered task tabulation according to the registered task name;
Step 43 with the rolling counters forward zero clearing of the described node that finds in the step 42, and empties operation note with this and empties in the counter number of times record in sense cycle;
Step 44 discharges mutex.
Registered task can make its no longer monitored Mission Monitor by cancellation, and log off procedure comprises the steps:
Step 51 is obtained mutex;
Step 52 finds the node of this registered task information of preservation according to the registered task name in registered task tabulation, the node service marking of described node is not changed to uses other information zero clearings;
Step 53 discharges mutex.
Letterless box indicating circulation sign refers to the major cycle of monitor task among Fig. 2; The necessary registration earlier of registered task, nullify the back, and register, nullify and must occur in pairs.Registered task can be after registration, and any time before nullifying empties counter, but can not empty counter after nullifying before registration.
As shown in Figure 3, the operation of the monitoring logic in the monitor task major cycle comprises the steps:
Whether step 301, the node service marking of checking present node be for being used, and promptly whether the node service marking is true, if, execution in step 302, otherwise, execution in step 312;
Step 302 empties in the sense cycle of inspection present node in the counter number of times record, and whether the counter number of times that empties in the current counting interval is zero, if, execution in step 303, otherwise, execution in step 306;
Step 304 detects this rolling counters forward value and whether surpasses its counter thresholding, if, execution in step 305, otherwise execution in step 306;
Step 305 judges that this registered task can not get operation for a long time and enters abnormality, and enters corresponding abnormality processing according to the abnormality processing function pointer of preserving in this node that execution in step 312 then;
Step 306 judges whether to finish a sense cycle, if, execution in step 307, otherwise, execution in step 312;
Step 307 empties counter number of times record in the described sense cycle that adds up;
Step 308 is judged accumulation result whether greater than emptying counter number of times high threshold, if greater than, execution in step 309, otherwise execution in step 310;
Step 309 judges that this registered task operation too frequently enters abnormality, and enters corresponding abnormality processing according to the abnormality processing function pointer of preserving in this node that execution in step 312 then;
Step 310 is judged accumulation result whether less than emptying counter number of times low threshold, if less than, execution in step 311, otherwise execution in step 312;
Step 311 is judged that working time that this registered task obtains is very few and is entered abnormality, and enters corresponding abnormality processing according to the abnormality processing function pointer of preserving in this node, and execution in step 312 then;
In sum, adopt the present invention's running status of a plurality of tasks in the monitoring software simultaneously, and the abnormality processing means are flexible, not limited by the specific implementation of monitor task, can effectively improve the self-healing property and the stability of multitask software.
Claims (10)
1, a kind of method for supervising of software operation state, this method is monitored the running status of corresponding task in the software by computer system, comprise that at least one registered task, priority are higher than the monitor task of registered task, registered task tabulation and mutex, performing step is as follows:
(a1) structure registered task tabulation, and define one be used to identify whether have task operating registered task tabulation sign as mutex, registered task tabulation empties counter number of times record by representing separately each node of registered task to form in the packets of information explanatory note in brackets volume task name of each node preservation, abnormality processing function pointer, rolling counters forward, counter thresholding, the sense cycle;
(a2) monitor task initialization registered task tabulation, need monitored task after registration, to become registered task then, registration process is not used in the node for of the information that comprises registered task name, abnormality processing function pointer, counter thresholding that this task provided being saved in the registered task tabulation, can empty the rolling counters forward in this node after the registered task operation;
(a3) monitor task judges whether to exist the registered task of abnormality according to the tabulation of certain time interval rechecking registered task, if exist, enters corresponding abnormality processing according to the abnormality processing function pointer of preserving in the node.
2, the method for supervising of software operation state according to claim 1 is characterized in that: the information that each node is preserved also comprises the node service marking, if this node uses, then the node service marking is true.
3, the method for supervising of software operation state according to claim 2 is characterized in that, monitor task is tabulated to registered task and checked that the time interval of judgement is a sense cycle, and its monitoring logic comprises the steps:
(b1) whether the node service marking of inspection present node is true, if true, execution in step (b2), otherwise execution in step (b5);
(b2) check whether empty counter number of times record in the sense cycle of present node is zero, if zero, execution in step (b3) then, otherwise execution in step (b5);
(b3) rolling counters forward adds 1, and detects this rolling counters forward value and whether surpass its counter thresholding, if surpass, and execution in step (b4) then, otherwise execution in step (b5);
(b4) judge that the registered task that this node is represented is in abnormality, and enter corresponding abnormality processing according to the abnormality processing function pointer of preserving in this node;
(b5) check next node in the registered task tabulation, repeating step (b1) is to (b5), the detection of all nodes in finishing the registered task tabulation.
4, the method for supervising of software operation state according to claim 2, it is characterized in that, the information that each node is preserved also comprises and empties counter number of times high threshold and empty counter number of times low threshold, and the information that registered task is saved to the registered task tabulation in registration process also comprises and empties counter number of times high threshold and empty counter number of times low threshold.
5, the method for supervising of software operation state according to claim 4, it is characterized in that, monitor task is tabulated to registered task and is checked that the time interval of judgement is a counting interval, and several counting intervals are formed a sense cycle, and its monitoring logic comprises the steps:
(c1) whether the node service marking of inspection present node is true, if true, execution in step (c2), otherwise execution in step (c7);
(c2) check in the sense cycle of present node to empty whether the counter number of times that empties in the current counting interval is zero in the counter number of times record, if zero, execution in step (c3) then, otherwise execution in step (c5);
(c3) rolling counters forward adds 1, and detects this rolling counters forward value and whether surpass its counter thresholding, if surpass, and execution in step (c4) then, otherwise execution in step (c7);
(c4) judge that the registered task that this node is represented is in abnormality, and enter corresponding abnormality processing, then execution in step (c7) according to the abnormality processing function pointer of preserving in this node;
(c5) judge whether to finish a sense cycle, if, execution in step (c6), otherwise execution in step (c7);
(c6) add up and empty counter number of times record in the sense cycle of this node, if accumulation result is greater than emptying counter number of times high threshold or less than emptying counter number of times low threshold, the registered task of then judging this node representative is in abnormality, and enters corresponding abnormality processing according to the abnormality processing function pointer of preserving in this node;
(c7) check next node in the registered task tabulation, repeating step (c1) is to (c7), the detection of all nodes in finishing the registered task tabulation.
6, the method for supervising of software operation state according to claim 2, it is characterized in that: monitor task initialization registered task tabulation operation comprises that the node service marking with each node in the registered task tabulation is not changed to use, and with other information zero clearings in the node.
7, the method for supervising of software operation state according to claim 6 is characterized in that: the data structure that realizes the registered task tabulation is tabulation, array or chained list.
8, the method for supervising of software operation state according to claim 7, it is characterized in that: the specific implementation form of described monitor task and registered task can be process, process, the thread in the operating system, or be the Interrupt Process of processor, or functional module for independently writing.
9, the method for supervising of software operation state according to claim 8, it is characterized in that: the way of realization of described mutex comprises the mutex that variable, register and operating system provide, and monitor task or each registered task must at first obtain this mutex before the tabulation of operation registered task.
10, the method for supervising of software operation state according to claim 9 is characterized in that, when registered task does not need can nullify it when monitored again, log off procedure comprises the steps:
(d1) obtain mutex;
(d2) in registered task tabulation, find the node of this registered task information of preservation according to the registered task name, the node service marking of node is installed not to be changed to use, and remaining nodal information zero clearing;
(d3) discharge mutex.
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| CN101937371A (en) * | 2010-08-27 | 2011-01-05 | 北京星网锐捷网络技术有限公司 | Method and device for monitoring task execution state in embedded system |
| CN103425562A (en) * | 2012-05-18 | 2013-12-04 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Software disconnection monitoring system and method |
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| CN111651325A (en) * | 2020-06-02 | 2020-09-11 | 中电科航空电子有限公司 | Airborne equipment task monitoring system and method |
| CN112612672A (en) * | 2020-12-18 | 2021-04-06 | 四川九洲电器集团有限责任公司 | Embedded software real-time running state monitoring method |
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