CN107341065B - Method and device for outputting debugging information - Google Patents
Method and device for outputting debugging information Download PDFInfo
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- CN107341065B CN107341065B CN201611040943.2A CN201611040943A CN107341065B CN 107341065 B CN107341065 B CN 107341065B CN 201611040943 A CN201611040943 A CN 201611040943A CN 107341065 B CN107341065 B CN 107341065B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0766—Error or fault reporting or storing
- G06F11/0778—Dumping, i.e. gathering error/state information after a fault for later diagnosis
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/362—Software debugging
- G06F11/3636—Software debugging by tracing the execution of the program
Abstract
The application provides a method and a device for outputting debugging information, wherein the method comprises the following steps: the method comprises the steps that a loader Bootloader obtains a preset mark value before an operating system is guided; the Bootloader stores the acquired marking value into a parameter queue; in the process of booting the operating system by the Bootloader, transmitting the parameter queue in which the marking value is stored to the operating system; after receiving the parameter queue transmitted by the Bootloader, the operating system acquires a mark value stored in the parameter queue; the operating system judges whether the marking value is a preset value or not; and under the condition that the marking value is a preset value, the operating system modifies the level of debugging information output so that the level of debugging information output is higher than or equal to the lowest output level. By applying the embodiment of the application, the preset marking value for controlling the operating system to modify the output level of the debugging information is transmitted to the operating system through the Bootloader, so that the operating system is controlled to output the debugging information.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a method and an apparatus for outputting debug information.
Background
With the development of embedded technology, the updating speed of embedded devices is faster and faster.
The failure of the new equipment is analyzed and solved by manpower in both the development stage and the maintenance stage, and the debugging is omitted in the processes.
Particularly, in the maintenance process, once the device is down in the starting process, the existing operating system cannot output debugging information, so that the problem is difficult to accurately locate by a maintainer.
In the prior art, after the device is sent out and crashed, a maintainer needs to restart the operating system and recompile the system version, and manually modify the level of information output in the operating system, so that the operating system can output debugging information; and then restarting the operating system again, wherein the operating system can output the debugging information, and the maintenance personnel check where and what problems occur according to the output debugging information, so as to repair the problems.
As described above, in the prior art, the process of outputting the debugging information is complex, and the problem of positioning is slow, which results in low efficiency of solving the problem.
Disclosure of Invention
The method and the device for outputting the debugging information solve the problems that in the prior art, the process of outputting the debugging information is complex, the positioning problem is slow, and the problem solving efficiency is low.
According to the method for outputting the debugging information provided by the embodiment of the application, the method comprises the following steps:
the method comprises the steps that a loader Bootloader obtains a preset mark value before an operating system is guided; the marking value is used for controlling the operating system to modify the output level of the debugging information;
the Bootloader stores the acquired marking value into a parameter queue;
in the process of booting the operating system by the Bootloader, transmitting the parameter queue in which the marking value is stored to the operating system;
after receiving the parameter queue transmitted by the Bootloader, the operating system acquires a mark value stored in the parameter queue;
the operating system judges whether the marking value is a preset value or not;
and under the condition that the marking value is a preset value, the operating system modifies the level of debugging information output so that the level of debugging information output is higher than or equal to the lowest output level.
Optionally, the storing, by the Bootloader, the obtained tag value in a parameter queue includes:
and the Bootloader stores the acquired mark value at the tail of the parameter queue.
Optionally, after the operating system receives the parameter queue transferred by the Bootloader, the method further includes:
checking the parameter queue;
and in the case that the verification is passed, executing the step of acquiring the mark value stored in the parameter queue.
Optionally, the check includes a Cyclic Redundancy Check (CRC) check.
Optionally, the flag value is a constant of at least 4 bytes.
According to an embodiment of the present application, an apparatus for outputting debug information includes:
the device comprises an acquisition unit, a storage unit and a control unit, wherein the acquisition unit is used for acquiring a preset mark value before a loader Bootloader guides an operating system; the marking value is used for controlling the operating system to modify the output level of the debugging information;
the Bootloader stores the acquired marking value into a parameter queue;
the transfer unit is used for transferring the parameter queue stored with the marking value to the operating system in the process of guiding the operating system by the Bootloader;
the receiving unit is used for acquiring a mark value stored in a parameter queue after the operating system receives the parameter queue transmitted by the Bootloader;
the operating system judges whether the marking value is a preset value or not;
and the modifying unit is used for modifying the level of the debugging information output by the operating system under the condition that the marking value is a preset value, so that the level of the debugging information output is higher than or equal to the lowest output level.
Optionally, the storage unit specifically includes:
and the Bootloader stores the acquired mark value at the tail of the parameter queue.
Optionally, the receiving unit specifically includes:
the receiving subunit checks the parameter queue in the process of guiding the operating system by the Bootloader;
and the acquisition subunit acquires the mark value stored in the parameter queue under the condition that the verification is passed.
Optionally, the check includes a Cyclic Redundancy Check (CRC) check.
Optionally, the flag value is a constant of at least 4 bytes.
In the embodiment of the application, a preset marking value for controlling the output level of the modification information of the operating system is transmitted to the operating system through the Bootloader, and the operating system can be enabled to modify the output level of the debugging information under the condition that the marking value is a preset value, so that the debugging information is output. Therefore, after the device sends the downtime, the user only needs to restart the device and set the marking value under the Bootloader to the preset value, and the operating system can output the debugging information after restarting the device again. The operation process is greatly simplified, and the system version does not need to be compiled again, so that the problem can be quickly positioned, and the problem solving efficiency is improved.
Drawings
FIG. 1 is a flowchart of a method for outputting debug information according to an embodiment of the present application;
FIG. 2 is a hardware structure diagram of a device where the apparatus for outputting debug information according to the present application is located;
fig. 3 is a block diagram of an apparatus for outputting debug information according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
As mentioned above, in the prior art, the operating system of the device generally does not output the debugging information; once the equipment is down, the maintenance personnel cannot quickly locate the problem; the operating system can only be restarted and the system version is recompiled, and the level of information output in the operating system is artificially modified, so that the operating system can output debugging information; the operating system is then restarted again, at which point the operating system may output debug information. In this way, it is clear that the problem is solved less efficiently. Moreover, after the problem is solved, the maintenance personnel must change the compiled system version back to the original system version, which further increases the workload of the maintenance personnel. In addition, because all the systems are compiled by maintenance personnel manually, the conditions such as compiling errors and the like are easy to occur, and the process is uncontrollable.
To solve the above problem, please refer to fig. 1, which is a flowchart of a method for outputting debug information according to an embodiment of the present application, including the following steps:
step 110: the method comprises the steps that a loader Bootloader obtains a preset mark value before an operating system is guided; the flag value is used to control the operating system to modify the level of debug information output.
In the related art, BootLoader is run before the operating system is started. Hardware devices can be initialized, memory space maps can be established, and the like, so that the software and hardware environment of the system is brought to a proper state, and a correct environment is prepared for finally calling an operating system kernel.
In this embodiment, a method for configuring a tag may be newly provided under the Bootloader. Generally, the default flag value indicates that the operating system outputs normally, i.e., does not output debug information as the original operating system does.
After the device is down, the user may restart the device and reconfigure the marked value at the Bootloader by means of a command line, configuration options, a configuration file, or the like, for example, configuring the marked value as a value that can control the operating system to output the debugging information. Then, the device is restarted again.
After the device is restarted each time, a loader Bootloader needs to acquire a preset mark value before an operating system is booted.
It is worth mentioning that the flag value is a constant greater than 4 bytes. Such as 111111.
By setting the flag value more complicated, the situation that the flag value is duplicated with other parameter values can be avoided, and unnecessary errors in transmission can be avoided.
Step 120: and the Bootloader stores the acquired marking value into a parameter queue.
In this embodiment, in the boot process of the Bootloader, the generated parameter queue needs to be transferred to the operating system. The parameters in the parameter queue are all necessary for starting the operating system, and comprise PMC, EBI, SMC, SDRAM, USART and the like.
In this embodiment, the Bootloader may store the obtained tag value in a parameter queue.
Specifically, the Bootloader stores the acquired mark value at the tail of the parameter queue.
Of course, in other embodiments, the tag value may be stored in any other location of the parameter queue.
Step 130: and in the process of booting the operating system by the Bootloader, transmitting the parameter queue in which the marking value is stored to the operating system.
In this embodiment, after the Bootloader is started, an operating system may be booted; and in the process of booting the operating system by the Bootloader, the parameter queue in which the mark value is stored can be transmitted to the operating system.
Step 140: and after receiving the parameter queue transmitted by the Bootloader, the operating system acquires the mark value stored in the parameter queue.
In this embodiment, after receiving the parameter queue transmitted by the Bootloader, the operating system starts the operating system according to the original flow; the difference is that, because a tag value is added to the parameter queue, the operating system needs to obtain the tag value stored in the parameter queue.
Step 150: and the operating system judges whether the marking value is a preset value.
The preset value can be a value set artificially.
If the flag value is a preset value, further performing the following step 160;
if the marking value is not the preset value, the debugging information does not need to be output, so that the operating system does not need to process the marking value.
Step 160: and under the condition that the marking value is a preset value, the operating system modifies the level of debugging information output so that the level of debugging information output is higher than or equal to the lowest output level.
In this embodiment, when the flag value is a preset value, it indicates that the user needs the operating system to output the debugging information, so that the operating system needs to modify the level of the debugging information output, so that the level of the debugging information output is higher than or equal to the lowest output level.
For example, the lowest output level in an operating system is 6 levels; under normal circumstances, the level of debug information output is typically below 6 levels;
and if the mark value transmitted by the Bootloader is a preset value, the operating system needs to modify the output level of the debugging information to be greater than or equal to 6 levels. Therefore, the debugging information can be output, and the user can locate the problem according to the output debugging information.
In the embodiment of the application, a preset marking value for controlling the output level of the modification information of the operating system is transmitted to the operating system through the Bootloader, and the operating system can be enabled to modify the output level of the debugging information under the condition that the marking value is a preset value, so that the debugging information is output. Therefore, after the device sends the downtime, the user only needs to restart the device and set the marking value under the Bootloader to the preset value, and the operating system can output the debugging information after restarting the device again. The operation process is greatly simplified, and the system version does not need to be compiled again, so that the problem can be quickly positioned, and the problem solving efficiency is improved.
In another specific embodiment of the present application, after the operating system receives the parameter queue transferred by the Bootloader in step 130, the method further includes:
checking the parameter queue;
and in the case that the verification is passed, executing the step of acquiring the mark value stored in the parameter queue.
In this embodiment, in order to ensure the starting safety of the operating system, the received parameter queue may be checked; only the queue parameter that passes the check can be used.
It is noted that the Check may include a CRC (Cyclic Redundancy Check) Check, an MD5(Message Digest Algorithm, fifth edition) Check, a parity Check, or the like.
Corresponding to the foregoing method embodiment for outputting debug information, the present application also provides an embodiment of an apparatus for outputting debug information.
The embodiments of the apparatus for outputting debugging information of the present application can be applied to embedded devices respectively. The device embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. The software implementation is taken as an example, and is formed by reading corresponding computer program instructions in the nonvolatile memory into the memory for operation through the processor of the device where the software implementation is located as a logical means. From a hardware level, as shown in fig. 2, a hardware structure diagram of a device in which the apparatus for outputting the debugging information of the present application is located is shown, and in addition to the processor, the network interface, the memory, and the nonvolatile memory shown in fig. 2, the device in which the apparatus is located in the embodiment may also include other hardware according to the actual function of the output debugging information.
Referring to fig. 3, a block diagram of an apparatus for outputting debug information according to an embodiment of the present application is shown, where the apparatus may include: an acquisition unit 210, a storage unit 220, a delivery unit 230, a receiving unit 240, a judgment unit 250, and a modification unit 260.
The obtaining unit 210 obtains a preset flag value before the loader Bootloader boots the operating system; the marking value is used for controlling the operating system to modify the output level of the debugging information;
the saving unit 220, the Bootloader saving the obtained mark value to the parameter queue;
the transfer unit 230 is configured to transfer the parameter queue in which the flag value is stored to the operating system in a process of booting the operating system by the Bootloader;
the receiving unit 240 is configured to obtain a flag value stored in a parameter queue after the operating system receives the parameter queue transmitted by the Bootloader;
a determining unit 250, where the operating system determines whether the flag value is a preset value;
a modifying unit 260, where the flag value is a preset value, the operating system modifies a level of the debug information output such that the level of the debug information output is higher than or equal to a lowest output level.
In an alternative implementation:
the saving unit 220 specifically includes:
and the Bootloader stores the acquired mark value at the tail of the parameter queue.
In an alternative implementation:
the receiving unit 240 specifically includes:
the receiving subunit checks the parameter queue in the process of guiding the operating system by the Bootloader;
and the acquisition subunit acquires the mark value stored in the parameter queue under the condition that the verification is passed.
In an alternative implementation:
the check includes a cyclic redundancy check, CRC, check.
In an alternative implementation:
the flag value is a constant of at least 4 bytes.
According to the embodiment of the application, the Bootloader can transmit a preset marking value for controlling the output level of the modification information of the operating system to the operating system, and the operating system can be enabled to modify the output level of the debugging information under the condition that the marking value is a preset value, so that the debugging information is output. Therefore, after the device sends the downtime, the user only needs to restart the device and set the marking value under the Bootloader to the preset value, and the operating system can output the debugging information after restarting the device again. The operation process is greatly simplified, and the system version does not need to be compiled again, so that the problem can be quickly positioned, and the problem solving efficiency is improved.
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.
The implementation process of the functions and actions of each unit in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method of outputting debug information, the method comprising:
the method comprises the steps that a loader Bootloader obtains a preset mark value before an operating system is guided; the marking value is used for controlling the operating system to modify the output level of the debugging information;
the Bootloader stores the acquired marking value into a parameter queue;
in the process of booting the operating system by the Bootloader, transmitting the parameter queue in which the marking value is stored to the operating system;
after receiving the parameter queue transmitted by the Bootloader, the operating system acquires a mark value stored in the parameter queue;
the operating system judges whether the marking value is a preset value or not;
and under the condition that the marking value is a preset value, the operating system modifies the level of debugging information output so that the level of debugging information output is higher than or equal to the lowest output level.
2. The method according to claim 1, wherein the Bootloader stores the obtained tag value in a parameter queue, specifically comprising:
and the Bootloader stores the acquired mark value at the tail of the parameter queue.
3. The method of claim 1, wherein after the operating system receives the parameter queue passed by the Bootloader, the method further comprises:
checking the parameter queue;
and in the case that the verification is passed, executing the step of acquiring the mark value stored in the parameter queue.
4. The method of claim 3, wherein the check comprises a Cyclic Redundancy Check (CRC) check.
5. The method of claim 1, wherein the flag value is a constant of at least 4 bytes.
6. An apparatus for outputting debug information, the apparatus comprising:
the device comprises an acquisition unit, a storage unit and a control unit, wherein the acquisition unit is used for acquiring a preset mark value before a loader Bootloader guides an operating system; the flag value is used for controlling the operating system to modify the level of debugging information output;
the Bootloader stores the acquired marking value into a parameter queue;
the transfer unit is used for transferring the parameter queue stored with the marking value to the operating system in the process of guiding the operating system by the Bootloader;
the receiving unit is used for acquiring a mark value stored in a parameter queue after the operating system receives the parameter queue transmitted by the Bootloader;
the operating system judges whether the marking value is a preset value or not;
and the modifying unit is used for modifying the level of the debugging information output by the operating system under the condition that the marking value is a preset value, so that the level of the debugging information output is higher than or equal to the lowest output level.
7. The apparatus according to claim 6, wherein the saving unit specifically comprises:
and the Bootloader stores the acquired mark value at the tail of the parameter queue.
8. The apparatus according to claim 6, wherein the receiving unit specifically includes:
the receiving subunit checks the parameter queue in the process of guiding the operating system by the Bootloader;
and the acquisition subunit acquires the mark value stored in the parameter queue under the condition that the verification is passed.
9. The apparatus of claim 8, wherein the check comprises a Cyclic Redundancy Check (CRC) check.
10. The apparatus of claim 6, wherein the flag value is a constant of at least 4 bytes.
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