CN112231176A - Simple and convenient log recording method for VxWorks operating system - Google Patents
Simple and convenient log recording method for VxWorks operating system Download PDFInfo
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- CN112231176A CN112231176A CN202011099179.2A CN202011099179A CN112231176A CN 112231176 A CN112231176 A CN 112231176A CN 202011099179 A CN202011099179 A CN 202011099179A CN 112231176 A CN112231176 A CN 112231176A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3065—Monitoring arrangements determined by the means or processing involved in reporting the monitored data
Abstract
The invention relates to a simple log recording method for a VxWorks operating system, and belongs to the field of embedded software development. Adding a system log library source file logLib.c attached to a VxWorks operating system development environment into a VxWorks Image project; modifying logLib.c in VxWorks Image engineering, and adding a mounting point of a custom log processing function in the logLib.c; developing a related system log recording program based on a function format of a user-defined mounting point, and integrating the system log recording program into VxWorks Image engineering; and modifying the compiling sequence of each source file in the VxWorks Image project, moving logLib.o to the top, compiling and running the VxWorks Image project. The log recording method of the VxWorks operating system can simply and conveniently control the write-in frequency, error processing, overtime time and other related configurations of the log, easily realize the self-defined log recording function, and has the advantages of simple configuration, low cost, high safety and convenient use.
Description
Technical Field
The invention belongs to the field of embedded software development, and particularly relates to a simple and convenient log recording method for a VxWorks operating system.
Background
The system log is important data for recording and analyzing the operation process of the operating system. The VxWorks operating system is used as a common operating system in the embedded field, provides a self-contained system log library LogLib, and can mount a file descriptor of a standard file IO in the log library to write the system log into a persistent storage medium such as a hard disk, a memory card and the like.
However, the file writing function of the log library provided in the system does not provide configuration attributes regarding writing frequency, error handling and the like, and is inconvenient to use. If a user wishes to customize the file writing method of the system log, there are two conventional methods. The first is self-defining VxWorks Source Bui ld engineering, editing and modifying the related function files of the kernel, and then recompiling the whole kernel file. The method has some problems, firstly, the engineering has more compiling contents, relatively complex configuration and high cost, and the engineering customized by some un-open kernels is difficult to compile completely. Secondly, searching a related function of the LogLib in the running memory, and performing memory coverage by using the modified function. The method has low safety, is very troublesome to process and is inconvenient to use.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problems that how to provide a simple log recording method for a VxWorks operating system is to solve the problems that the file writing function of a log library of the VxWorks operating system is inconvenient to use, and the file writing method for customizing a system log by a user is complex in configuration, high in cost, low in safety and the like.
(II) technical scheme
In order to solve the technical problem, the invention provides a simple log recording method for a VxWorks operating system, which comprises the following steps:
s1, adding a system log library source file logLib.c attached to the VxWorks operating system development environment into a VxWorks Image project;
s2, modifying logLib.c in VxWorks Image engineering, and adding a mount point of a custom log processing function;
s3, developing a related system log recording program based on the function format of the custom mounting point, and integrating the system log recording program into VxWorks Image engineering;
s4, modifying the compiling sequence of each source file in the VxWorks Image project, moving logLib.o to the forefront, and compiling and running the VxWorks Image project.
Further, the step S2 specifically includes: adding a function pointer with the same parameter as the logMsg function, and determining the function pointer as a global variable; adding judgment null for the function pointer in the lprintf function, and executing if the function pointer is not null; the global function pointer variable is the mount point of the custom log processing function.
Further, the total operation flow after modifying loglib.c in the step S2 is as follows: and taking out a log from the message queue, calling the original log function processing of the system, judging whether the mounting point is mounted, calling a self-defined log processing function if the mounting point is mounted, and ending the log processing if the mounting point is not mounted.
Further, the method for implementing the custom log processing function in step S3 includes: recording the time of the log, and temporarily storing the time and 7 parameters which are originally the same as the logMsg function into another message queue; then a task is operated, the task reads the temporary stored message queue and writes the log information in the message queue into a persistent storage medium; and in the function, relevant configuration is controlled, and a self-defined log recording function is realized.
Further, the relevant configurations include write frequency, error handling, and timeout time.
Further, the step S4 specifically includes: in a VxWorks operating system development environment Workbench, modifying the attribute of a corresponding VxWorks Image project, selecting a Content tab in a Bui ld Properties option page, finding the logLib.o in the Content tab, adjusting the sequence of the logLib.o to the top through an up button on the right side, namely compiling the top, and then compiling the VxWorks Image project and running in a target environment.
(III) advantageous effects
The invention provides a simple and convenient VxWorks operating system log recording method, which can conveniently replace a related processing method of a system log library LogLib in compiling VxWorks Image engineering by utilizing a built-in mechanism of a development environment matched with a VxWorks operating system, and realizes the user-defined recording of system logs. The log recording method of the VxWorks operating system can simply and conveniently control the write-in frequency, error processing, overtime time and other related configurations of the log, easily realize the self-defined log recording function, and has the advantages of simple configuration, low cost, high safety and convenient use.
Drawings
FIG. 1 is a flow chart of the process associated with a mount point of the present invention.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The embodiment of the invention provides a simpler VxWorks operating system log recording method, which can conveniently replace a related processing method of a system log library LogLib in a VxWorks Image project by utilizing a built-in mechanism of a development environment matched with a VxWorks operating system, and can realize custom recording of a system log.
The implementation method for the log record of the VxWorks operating system comprises the following steps:
and adding a system log library source file loglib.c attached to the VxWorks operating system development environment into the VxWorks Image project.
And modifying logLib.c in VxWorks Image engineering, and adding a mounting point of a custom log processing function into the logLib.c.
And developing a related system log recording program based on a function format of a custom mounting point, and integrating the system log recording program into VxWorks Image engineering.
And modifying the compiling sequence of each source file in the VxWorks Image project, moving logLib.o to the top, compiling and running the VxWorks Image project.
In this embodiment, a method for recording a system log will be described step by step, and a final product after the method is a customized VxWorks Image project with a system log custom recording method. The method comprises the following specific steps:
step 1: and adding a system log library source file loglib.c attached to the VxWorks operating system development environment into the VxWorks Image project.
Generally, neither a third-party customized VxWorks operating system library nor a system library carried along with a development environment can adjust the content of loglib.c, and the development environment of the VxWorks operating system carries the source code loglib.c of a system log library, so that the source file is directly imported into a VxWork Image project to be developed.
Step 2: and modifying logLib.c in VxWorks Image engineering, and adding a mounting point of a custom log processing function into the logLib.c.
Modifying loglib.c content, taking out a log from a message queue as shown in the general operation flow shown in figure 1, calling the original log function processing of the system, judging whether a mounting point is mounted, calling a self-defined log processing function if the mounting point is mounted, and ending the log processing if the mounting point is not mounted.
The specific modification method comprises the following steps: adding a function pointer with the same parameter as the logMsg function, and determining the function pointer as a global variable; the lprintf function is executed by adding a null for the function pointer and if not null. The global function pointer variable is the mount point of the custom log processing function.
And step 3: and developing a related system log recording program based on a function format of a custom mounting point, and integrating the system log recording program into VxWorks Image engineering.
The specific implementation method of the mounting point function is not unique, and generally may be: recording the time of the log, and temporarily storing the time and 7 parameters which are originally the same as the logMsg function into another message queue; and then a task is operated, the task reads the temporarily stored message queue, the log information in the message queue is written into the persistent storage medium, and in the function, the write-in frequency, error processing, timeout time and other related configurations are controlled, so that the self-defined log recording function is realized.
And 4, step 4: and modifying the compiling sequence of each source file in the VxWorks Image project, moving logLib.o to the top, compiling and running the VxWorks Image project.
In a VxWorks operating system development environment Workbench, modifying the attribute of a corresponding VxWorks Image project, selecting a Content tab in a Bui ld Properties tab, finding the logLib.o in the Content tab, and adjusting the sequence of the logLib.o to the top through an up button on the right side, namely compiling the top. The VxWorks Image project is then compiled and run in the target environment.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A simple log recording method for a VxWorks operating system is characterized by comprising the following steps:
s1, adding a system log library source file logLib.c attached to the VxWorks operating system development environment into a VxWorks Image project;
s2, modifying logLib.c in VxWorks Image engineering, and adding a mount point of a custom log processing function;
s3, developing a related system log recording program based on the function format of the custom mounting point, and integrating the system log recording program into VxWorks Image engineering;
s4, modifying the compiling sequence of each source file in the VxWorks Image project, moving logLib.o to the forefront, and compiling and running the VxWorks Image project.
2. The convenient VxWorks operating system logging method of claim 1, wherein said step S2 specifically comprises: adding a function pointer with the same parameter as the logMsg function, and determining the function pointer as a global variable; adding judgment null for the function pointer in the lprintf function, and executing if the function pointer is not null; the global function pointer variable is the mount point of the custom log processing function.
3. The convenient VxWorks operating system logging method of claim 1, wherein the total running flow after modifying logLib.c in step S2 is as follows: and taking out a log from the message queue, calling the original log function processing of the system, judging whether the mounting point is mounted, calling a self-defined log processing function if the mounting point is mounted, and ending the log processing if the mounting point is not mounted.
4. The convenient VxWorks operating system logging method of any one of claims 1-3, wherein the implementation method of the custom log processing function in step S3 includes: recording the time of the log, and temporarily storing the time and 7 parameters which are originally the same as the logMsg function into another message queue; then a task is operated, the task reads the temporary stored message queue and writes the log information in the message queue into a persistent storage medium; and in the function, relevant configuration is controlled, and a self-defined log recording function is realized.
5. The trivial VxWorks operating system logging method of claim 4, wherein the relevant configurations include write frequency, error handling and timeout time.
6. The convenient VxWorks operating system logging method of claim 1, wherein said step S4 specifically comprises: in a VxWorks operating system development environment Workbench, modifying the attribute of a corresponding VxWorks Image project, selecting a Content tab in a Build Properties option page, finding the logLib.o in the Content tab, adjusting the sequence of the logLib.o to the top through an up button on the right side, namely compiling the top, and then compiling the VxWorks Image project and running in a target environment.
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