CN113467980A - Log output method, device and system and embedded equipment - Google Patents

Log output method, device and system and embedded equipment Download PDF

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Publication number
CN113467980A
CN113467980A CN202010237434.9A CN202010237434A CN113467980A CN 113467980 A CN113467980 A CN 113467980A CN 202010237434 A CN202010237434 A CN 202010237434A CN 113467980 A CN113467980 A CN 113467980A
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log
target
configuration item
controlling
output
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CN202010237434.9A
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Chinese (zh)
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李东青
周晶晶
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Xian Novastar Electronic Technology Co Ltd
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Xian Novastar Electronic Technology Co Ltd
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Priority to CN202010237434.9A priority Critical patent/CN113467980A/en
Publication of CN113467980A publication Critical patent/CN113467980A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703Error 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
    • G06F11/0766Error or fault reporting or storing
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10File systems; File servers
    • G06F16/18File system types
    • G06F16/1805Append-only file systems, e.g. using logs or journals to store data
    • G06F16/1815Journaling file systems

Abstract

The embodiment of the invention discloses a log output method, a log output device, a log output system and embedded equipment. The log output method comprises the following steps: responding to the operation of starting a target application program by a user, creating a process corresponding to the target application program, and distributing a process identifier for the process; controlling the process to call a log printing interface; controlling the process to read a log configuration file by using the log printing interface, wherein the log configuration file comprises at least one configuration item; and controlling the process to output the target log generated by the target application program according to the target configuration item matched with the process identifier in the configuration items by using the log printing interface. The embodiment of the invention can realize that the embedded equipment outputs the log of the application program according to the configuration items in the log configuration file, and provides convenience for the log management of a user.

Description

Log output method, device and system and embedded equipment
Technical Field
The present invention relates to the field of log management technologies, and in particular, to a log output method, a log output device, a log output system, and an embedded device.
Background
In embedded systems, such as ARM-based linux systems, print logging is an important means to debug and record the activity of applications. Clear and efficient log output can help application developers to quickly locate program problems. Specifically, the log contents indicate errors, warnings, prompt information, and the like. In a complex system running multiple applications, log output is particularly important.
In the related art, log printing is generally performed using a printf/fprintf () function. However, this log printing method is too simple, and it is inconvenient for a user to perform log management when a plurality of applications simultaneously print logs.
Disclosure of Invention
Therefore, to overcome at least some of the drawbacks and disadvantages of the related art, embodiments of the present invention provide a log output method, a log output apparatus, a log output system, and an embedded device.
In one aspect, a log output method provided in an embodiment of the present invention includes: responding to the operation of starting a target application program by a user, creating a process corresponding to the target application program, and distributing a process identifier for the process; controlling the process to call a log printing interface; controlling the process to read a log configuration file by using the log printing interface, wherein the log configuration file comprises at least one configuration item; and controlling the process to output the target log generated by the target application program according to the target configuration item matched with the process identifier in the configuration items by using the log printing interface.
In the above scheme, the log output method calls the log printing interface through the target application program, so that the log printing interface is used for reading the log configuration file, and then the target log generated by the target application program is output according to the target configuration item matched with the process identifier of the process corresponding to the target application program in the configuration items of the log configuration file.
In one embodiment of the present invention, each of the configuration items contains process identifier information and log print location information; the controlling the process, using the log printing interface, to output the target log generated by the target application according to the target configuration item matched with the process identifier in the at least one configuration item of the log configuration file specifically includes: controlling the process to search the at least one configuration item of the log configuration file according to the process identifier by using the log printing interface so as to obtain the target configuration item of which the contained process identifier information is matched with the process identifier; and controlling the process to output the target log to a log printing position pointed by the log printing position information contained in the target configuration item by using the log printing interface.
In one embodiment of the invention, the target configuration item further contains log print level information; the controlling the process, using the log printing interface, outputs the target log generated by the target application program according to the target configuration item matched with the process identifier in the at least one configuration item of the log configuration file, and specifically includes: and controlling the process to filter the logs generated by the target application program by using the log printing interface according to the printing grades corresponding to the log printing grade information so as to obtain the target logs.
In an embodiment of the present invention, the target configuration item further includes one or more items of session type information, log operation option information, and log output mode information.
In another aspect, an embodiment of the present invention provides a log output apparatus, including: the system comprises a creating module, a processing module and a processing module, wherein the creating module is used for responding to the operation of starting a target application program by a user, creating a process corresponding to the target application program and distributing a process identifier for the process; the first control module is used for controlling the process to call the log printing interface; the second control module is used for controlling the process to read a log configuration file by using the log printing interface, wherein the log configuration file comprises at least one configuration item; and the third control module is used for controlling the process to output the target log generated by the target application program according to the target configuration item matched with the process identifier in the configuration items by using the log printing interface.
In the above scheme, the log output device implements target log output by the target application program according to the configuration items of the log configuration file in the following manner, and provides convenience for log management. Specifically, the log output device calls a log printing interface through the target application program, so that the log printing interface is used for reading the log configuration file, and further, the target log generated by the target application program is output according to the target configuration item matched with the process identifier of the process corresponding to the target application program in the configuration items of the log configuration file.
In one embodiment of the present invention, each of the configuration items contains process identifier information and log print location information; the third control module specifically includes: the first control unit is used for controlling the process to search the at least one configuration item of the log configuration file according to the process identifier by using the log printing interface so as to acquire the target configuration item of which the contained process identifier information is matched with the process identifier; and the second control unit is used for controlling the process to output the target log to a log printing position pointed by the log printing position information contained in the target configuration item by using the log printing interface.
In one embodiment of the invention, the target configuration item further contains log print level information; the third control module further includes: and the third control unit is used for controlling the process to filter the log generated by the target application program according to the printing grade corresponding to the log printing grade information by using the log printing interface so as to obtain the target log.
In an embodiment of the present invention, the target configuration item further includes one or more items of session type information, log operation option information, and log output mode information.
In another aspect, an embodiment of the present invention provides a log output system, including: a memory and a processor coupled to the memory; the memory stores a computer program, and the processor executes any one of the log output methods when running the computer program.
In still another aspect, an embodiment of the present invention provides an embedded device, an embedded processor and an installed embedded operating system, for executing the log output method as recited in any one of claims 1 to 4.
One or more of the above technical solutions may have the following advantages or beneficial effects: and calling a log printing interface through the target application program, reading the log configuration file by using the log printing interface, and outputting the target log generated by the target application program according to the target configuration item matched with the process identifier of the process corresponding to the target application program in the configuration items of the log configuration file.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a log output method according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of an embedded device running the log output method of the first embodiment.
Fig. 3 is a schematic diagram of a log configuration file according to a first embodiment of the present invention.
Fig. 4 is a block diagram of a log output device according to a second embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a third control module in fig. 4.
Fig. 6 is a schematic structural diagram of a log output system according to a third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a computer-readable storage medium according to a fourth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1, a log output method of a first embodiment of the present invention is shown. The log output method comprises the following steps:
s12, responding to the operation of starting the target application program by the user, creating a process corresponding to the target application program and distributing a process identifier for the process;
s14, controlling the process to call a log printing interface;
s16, controlling the process to read a log configuration file by using the log printing interface, wherein the log configuration file comprises at least one configuration item; and
and S18, controlling the process to utilize the log printing interface to output the target log generated by the target application program according to the target configuration item matched with the process identifier in the configuration items.
In order to facilitate understanding of the present invention, a detailed description will be given below of the log output method of the present embodiment with reference to fig. 2. The log output method of the present embodiment may be run, for example, on an embedded device 20 including an embedded processor 21. The embedded device 30 here comprises an embedded processor 31, for example an ARM embedded processor, which is for example equipped with an embedded operating system like Linux or Unix operating system.
First, it should be noted that, in the embodiment of the present invention, a log management tool is involved in the process of implementing log management, and the log management tool provides a log printing interface for a program developer, so that a user can call the log printing interface when developing an application program. The journal print interface may be, for example:
#define TR(Level,f...)
aplog _ printf (Level, TR _ LAYER _ GET (), __ func __, f), where Level is the journal print Level, aplog _ printf is the implementation inside the journal print interface TR, TR _ LAYER _ GET () is the session type, __ func __ is the name of the current function, and f is the journal output format, is defined herein. The parameters contained in the journal printing interface finally determine the journal content output by the journal printing interface. It should be noted that the above examples of the journal printing interface are only illustrative, and are not intended to limit the journal printing interface.
In executing the log output method, first, in response to an operation of a user starting a target application, the embedded processor 21 creates a process corresponding to the target application and assigns a process identifier (i.e., a process ID) to the process (corresponding to step S12 in fig. 1). Here, the target application is an application that currently needs to log out.
After that, the embedded processor 21 controls the process to call the log print interface (corresponding to step S14 in fig. 1). Here, the developer adds a journal printing interface in the target application when developing the target application, that is, adds a code line related to the journal printing interface in a corresponding statement line of the target application, for example, adds a code line related to interface printing such as TR ("start") in the target application to implement journal output, so that the target application calls the journal printing interface to perform journal output when running.
Then, the embedded processor 21 controls the process to read a log configuration file using the log printing interface, wherein the log configuration file includes at least one configuration item (corresponding to step S16 in fig. 1). Here, the log configuration file may be generated by a user through a log configuration tool, or may be imported from the outside into the embedded device 20 by the user, and the embodiment of the present invention is not specifically limited herein. The log configuration file has a specific structure, and is in the form of a header structure body and configuration items, wherein the header structure body describes the configuration items. The configuration items are in one-to-one correspondence with the applications, i.e., the processes, and the log configuration file comprises at least one configuration item, i.e., the log configuration file is associated with at least one corresponding application. Here, as shown in fig. 3, the header structure may include, for example, a process identifier (Task), a session type (Layer), a journal operation option (Opts), a journal print level (Levels), a journal output manner (outputs), and a journal print location (outputFilename), which are defined as follows: task is a process name in embedded system 20. Layer may for example be: default (representing that all processes associated with the current Task are output by default), Task _ name (only the log of the current Task associated with the set Task _ name is output), or null. Opts may be, for example, e: enable configuration, i.e. whether the configuration item representing this row is functional, t: output timestamp, i.e. the time when the current application printed the corresponding log, L: output journal print level (levels, hereinafter), F: and outputting the function name corresponding to the output log in the application program or being empty. Levels may be, for example, d: debug type, r: route type, e: error type, or null. Opts may be, for example, o: stdout standard output, e: stderr standard error, f: specify a file, or be empty. An outputFilename may be, for example, a specified file path name. Correspondingly, the configuration item may include, for example, information corresponding to the header structure, that is, process identifier information, session type information, log operation option information, log printing level information, log output mode information, and log printing location information, and of course, the configuration item may include part or all of the above information, which may be customized by a user when creating the log configuration file.
Finally, the embedded processor 21 controls the process to output a target log generated by the target application according to a target configuration item matching the process identifier among the at least one configuration item of the log configuration file by using the log printing interface (corresponding to step S18). That is, the embedded processor 21 makes a corresponding output of the log according to the target configuration item matched with the target application. For example, each configuration item may include, for example, process identifier information and log printing location information, and correspondingly, step S18 specifically includes: the embedded processor 21 controls the process to search the at least one configuration item of the log configuration file according to the process identifier by using the log printing interface so as to obtain the target configuration item of which the contained process identifier information is matched with the process identifier; and controlling the process to output the target log to a log printing position pointed by the log printing position information contained in the target configuration item by using the log printing interface. Of course, in addition to determining the target configuration item corresponding to the target application program through the process identifier information in the configuration item, the embodiment of the present invention may also determine the configuration item corresponding to the process identifier of the target application program through other matching manners, which is not limited herein. In the case that the target configuration item further includes log printing level information, step S18 may further include: and controlling the process to filter the logs generated by the target application program by using the log printing interface according to the printing grades corresponding to the log printing grade information so as to obtain the target logs. Here, the log printing level control can be realized by the configuration item including the log printing level information, so that differential printing (for example, printing only error information in the log information) can be realized. Of course, the target configuration item further includes one or more items of session type information, log operation option information, and log output mode information. The user can customize the specific information of the configuration items according to the needs, and the user can edit the log configuration file in a mode of modifying, deleting or adding the configuration items, so that the flexible management of the log is realized. For example, by modifying the log configuration file, the following functions may be implemented:
a. an application program for controlling log output in the system;
b. controlling the log printing level of the log output by the application program;
c. the location of the application output log is controlled. Txt is output to file, say/tm/test. The/dev/pts/1 is a terminal console.
d. And realizing real-time printing of log information according to the specified length.
In summary, the log output method provided in the embodiment of the present invention calls the log print interface through the target application program, so that the log print interface is used to read the log configuration file, and further, the target log generated by the target application program is output according to the target configuration item, which is matched with the process identifier of the process corresponding to the target application program, in the configuration item of the log configuration file.
[ second embodiment ]
As shown in fig. 4, a second embodiment of the present invention provides a log output apparatus 30, including: a creation module 32, a first control module 34, a second control module 36, and a third control module 38.
The creating module 32 is configured to, for example, respond to an operation of starting a target application program by a user, create a process corresponding to the target application program, and assign a process identifier to the process; the first control module 34 is used for controlling the process call log printing interface, for example; the second control module 36 is, for example, configured to control the process to read a log configuration file using the log printing interface, where the log configuration file includes at least one configuration item; and the third control module 38 is, for example, configured to control the process to output, by using the log printing interface, a target log generated by the target application according to a target configuration item matching the process identifier in the configuration items.
In one embodiment of the present invention, each of the configuration items includes process identifier information and log print location information. For example, as shown in fig. 5, the third control module 38 may include, for example: a first control unit 382, configured to control the process to search the at least one configuration item of the log configuration file according to the process identifier by using the log printing interface to obtain the target configuration item whose included process identifier information matches the process identifier; and the second control unit 384 is used for controlling the process to output the target log to the log printing position pointed by the log printing position information contained in the target configuration item by using the log printing interface.
In one embodiment of the present invention, the target configuration item further includes log print level information. The third control module 38 may also include, for example: a third control unit 386 (as shown in fig. 5) configured to control the process to filter the log generated by the target application according to the print level corresponding to the log print level information by using the log print interface, so as to obtain the target log.
In an embodiment of the present invention, the target configuration item further includes one or more items of session type information, log operation option information, and log output mode information.
For specific working processes and technical effects among the modules in the log output device 30 in this embodiment, reference may be made to the related description of the first embodiment, and details are not repeated here.
[ third embodiment ]
As shown in fig. 6, a log output system 50 according to a third embodiment of the present invention includes: a processor 52 and a memory 54; the memory 54 stores instructions to be executed by the processor 52, and the instructions cause the processor 52 to perform operations to perform the log output method described in the foregoing first embodiment, for example.
[ fourth example ] A
As shown in fig. 7, a computer-readable storage medium 60, which is a non-volatile memory and stores program code, when the program code is executed by one or more processors, for example, causes the one or more processors to execute the log output method described in the foregoing first embodiment.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and technical solutions of the embodiments can be arbitrarily combined and used without conflict between technical features and structures, and without departing from the purpose of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and/or method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units/modules is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units/modules described as separate parts may or may not be physically separate, and parts displayed as units/modules may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units/modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, each functional unit/module in the embodiments of the present invention may be integrated into one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated into one unit/module. The integrated units/modules may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units/modules.
The integrated units/modules, which are implemented in the form of software functional units/modules, may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing one or more processors of a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A log output method, comprising:
responding to the operation of starting a target application program by a user, creating a process corresponding to the target application program, and distributing a process identifier for the process;
controlling the process to call a log printing interface;
controlling the process to read a log configuration file by using the log printing interface, wherein the log configuration file comprises at least one configuration item; and
and controlling the process to output the target log generated by the target application program according to the target configuration item matched with the process identifier in the configuration items by using the log printing interface.
2. The log outputting method according to claim 1, wherein each of the configuration items contains process identifier information and log printing position information;
the controlling the process, using the log printing interface, to output the target log generated by the target application according to the target configuration item matched with the process identifier in the at least one configuration item of the log configuration file specifically includes:
controlling the process to search the at least one configuration item of the log configuration file according to the process identifier by using the log printing interface so as to obtain the target configuration item of which the contained process identifier information is matched with the process identifier; and
and controlling the process to output the target log to a log printing position pointed by the log printing position information contained in the target configuration item by using the log printing interface.
3. The log outputting method according to claim 2, wherein the target configuration item further contains log print level information;
the controlling the process, using the log printing interface, outputs the target log generated by the target application program according to the target configuration item matched with the process identifier in the at least one configuration item of the log configuration file, and specifically includes:
and controlling the process to filter the logs generated by the target application program by using the log printing interface according to the printing grades corresponding to the log printing grade information so as to obtain the target logs.
4. A log output method according to claim 2 or 3, wherein the target configuration item further contains one or more of session type information, log operation option information, and log output mode information.
5. A log output apparatus, comprising:
the system comprises a creating module, a processing module and a processing module, wherein the creating module is used for responding to the operation of starting a target application program by a user, creating a process corresponding to the target application program and distributing a process identifier for the process;
the first control module is used for controlling the process to call the log printing interface;
the second control module is used for controlling the process to read a log configuration file by using the log printing interface, wherein the log configuration file comprises at least one configuration item; and
and the third control module is used for controlling the process to output the target log generated by the target application program according to the target configuration item matched with the process identifier in the configuration items by using the log printing interface.
6. The log output apparatus according to claim 5, wherein each of the configuration items contains process identifier information and log print position information;
the third control module specifically includes:
the first control unit is used for controlling the process to search the at least one configuration item of the log configuration file according to the process identifier by using the log printing interface so as to acquire the target configuration item of which the contained process identifier information is matched with the process identifier; and
and the second control unit is used for controlling the process to output the target log to a log printing position pointed by the log printing position information contained in the target configuration item by using the log printing interface.
7. The log output apparatus according to claim 6, wherein the target configuration item further contains log print level information;
the third control module further includes:
and the third control unit is used for controlling the process to filter the log generated by the target application program according to the printing grade corresponding to the log printing grade information by using the log printing interface so as to obtain the target log.
8. A log output device according to claim 6 or 7, wherein the target configuration item further contains one or more of session type information, log operation option information, and log output mode information.
9. A log output system, comprising: a memory and a processor coupled to the memory; the memory stores a computer program which, when executed by the processor, performs the log output method of any one of claims 1 to 4.
10. An embedded device, comprising:
an embedded processor and an embedded operating system installed for performing the log outputting method of any one of claims 1 to 4.
CN202010237434.9A 2020-03-30 2020-03-30 Log output method, device and system and embedded equipment Pending CN113467980A (en)

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