CN110515751A - A kind of method and system of load operating VxWorks real-time guard process - Google Patents
A kind of method and system of load operating VxWorks real-time guard process Download PDFInfo
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- CN110515751A CN110515751A CN201810495580.4A CN201810495580A CN110515751A CN 110515751 A CN110515751 A CN 110515751A CN 201810495580 A CN201810495580 A CN 201810495580A CN 110515751 A CN110515751 A CN 110515751A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/004—Error avoidance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44568—Immediately runnable code
- G06F9/44578—Preparing or optimising for loading
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- Theoretical Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a kind of method and system of load operating VxWorks real-time guard process.Method includes: to construct a temporary file system based on memory；The executable code file of compiled VxWorks real-time guard process is write in the temporary file system；Call the relevant interface for starting the executable code file, executable code file described in start-up loading.Method according to the invention it is possible to which being detached from file system realizes that the start-up loading of VxWorks real-time guard process improves the operation stability of VxWorks real-time guard process to reduce the operation hardware requirement of VxWorks real-time guard process.
Description
Technical field
Electronic technology field of the present invention, and in particular to a kind of method of load operating VxWorks real-time guard process and be
System.
Background technique
VxWorks operating system is a kind of very widely used operating system in the prior art, traditional application journey
Sequence is the .out program that DKM (Downloadable Kernel Module) is generated, task where .out program directly with
System kernel is shared with a piece of memory headroom, can directly other if occurring the BUG such as RAM leakage etc in .out
It is engaged in or causes system crash.
Since vxWorks 6.4, vxWorks operating system introduces real-time guard process (VxWorks realtime
Process project, RTP) mode programming.Each RTP process is completely independent in RTP real-time process, and program is in RTP process
Any mistake that portion occurs all is limited in inside RTP process, discharges all resources automatically when deleting RTP real-time process.RTP with
Unlike other multi-process OS, the RTP real-time process of VxWorks has complete static certainty, provides protection against
Highest real-time response certainty and rapidity are provided simultaneously, and complete storage error detection and storage report can be provided
Function.Dynamic link library and sharing data area function also provide simultaneously.RTP real-time guard process and the original higher property of VWorks
Energy real-time task constitutes the super equipment platform that protectiveness and real-time have both together.
The advantages of RTP real-time guard mode is that application program is mutually indepedent, is independent of each other, and increases the stabilization of kernel
Property, the disadvantage is that the memory copying of " kernel state " and " User space ", execution efficiency decrease, keyed CPU speed is getting faster,
The sacrifice of this point efficiency is more and more insignificant.But compared to traditional DKM (downloadble kernel
Module project), RTP is suitble to multiple team's independent works, then summarizes debugging.
But that the generation of the RTP real-time process of vxWorks operating system is executable file .vxe, is similar to
Exe executable file under Windows environment, file load depend on file system.However, embedded system under normal conditions
Resource is limited, and not all embedded system has the storage chip of large capacity to establish file system, and is based on
There is being easily damaged, the file being stored in file system is easy to lose the file system of vxWorks operating system building itself
The problems such as losing or damaging.
Summary of the invention
The present invention provides a kind of methods of load operating VxWorks real-time guard process, which comprises
A temporary file system is constructed based on memory；
The executable code file of compiled VxWorks real-time guard process is write in the temporary file system；
Call the relevant interface for starting the executable code file, executable code file described in start-up loading.
In one embodiment, the executable code file of compiled VxWorks real-time guard process is write into described face
When file system in, comprising:
The executable code file is stored in data storage；
The executable code file in the data storage is read to the memory；
The executable code file in the memory is write in the temporary file system.
In one embodiment, the executable code file in the data storage is read to memory, wherein with two
The form of system reads the executable code file in the data storage to memory.
In one embodiment, the executable code file in the data storage is read to memory, wherein access
Absolute address in the data storage reads the executable code file to memory.
In one embodiment, it accesses the absolute address in the data storage and reads the executable code file in
Deposit, wherein obtain the executable code file in the offset and size relative to the data storage base address.
In one embodiment:
The executable code file in the data storage is read to memory, wherein generate in the memory
One image file as the executable code file content；
The temporary file system is written into the image file in the memory, it is raw in the temporary file system
At corresponding executable code program；
Call the relevant interface for starting the executable code program, executable code program described in start-up loading.
In one embodiment, the method also includes:
The executable code program is deleted after executable code program described in start-up loading.
The invention also provides a kind of storage medium, it is stored on the storage medium and method as described herein can be achieved
Program code.
The invention also provides a kind of system of load operating VxWorks real-time guard process, the system comprises:
Memory；
Data storage；
Procedure load module is configured under vxworks operating system environment based on the memory and the data
Memory realizes the method for the invention.
In one embodiment, the data storage is flash storage.
Method according to the invention it is possible to it is detached from the start-up loading that file system realizes VxWorks real-time guard process, from
And the operation hardware requirement of VxWorks real-time guard process is reduced, improve the stable of VxWorks real-time guard process
Property.
Other feature or advantage of the invention will illustrate in the following description.Also, Partial Feature of the invention or
Advantage will be become apparent by specification, or be appreciated that by implementing the present invention.The purpose of the present invention and part
Advantage can be realized or be obtained by step specifically noted in the specification, claims and drawings.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example and is used together to explain the present invention, be not construed as limiting the invention.In the accompanying drawings:
Fig. 1 and Fig. 3 is the method flow diagram of different embodiments according to the present invention；
Fig. 2 is method partial process view according to an embodiment of the invention.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, implementation personnel of the invention whereby
Can fully understand that how the invention applies technical means to solve technical problems, and reach technical effect realization process and according to
The present invention is embodied according to above-mentioned realization process.As long as each embodiment it should be noted that do not constitute conflict, in the present invention
And each feature in each embodiment can be combined with each other, be formed by technical solution protection scope of the present invention it
It is interior.
VxWorks operating system is a kind of very widely used operating system in the prior art, traditional application journey
Sequence is the .out program that DKM (Downloadable Kernel Module) is generated, task where .out program directly with
System kernel is shared with a piece of memory headroom, can directly other if occurring the BUG such as RAM leakage etc in .out
It is engaged in or causes system crash.
Since vxWorks 6.4, vxWorks operating system introduces real-time guard process (VxWorks real time
Process project, RTP) mode programming.Each RTP process is completely independent in RTP real-time process, and program is in RTP process
Any mistake that portion occurs all is limited in inside RTP process, discharges all resources automatically when deleting RTP real-time process.RTP with
Unlike other multi-process OS, the RTP real-time process of VxWorks has complete static certainty, provides protection, protective function
While highest real-time response certainty and rapidity are provided, and complete storage error detection and storage report can be provided
Accuse function.Dynamic link library and sharing data area function also provide simultaneously.RTP real-time guard process is original higher with VWorks
Performance real-time task constitutes the super equipment platform that protectiveness and real-time have both together.
The advantages of RTP real-time guard mode is that application program is mutually indepedent, is independent of each other, and increases the stabilization of kernel
Property, the disadvantage is that the memory copying of " kernel state " and " User space ", execution efficiency decrease, keyed CPU speed is getting faster,
The sacrifice of this point efficiency is more and more insignificant.But compared to traditional DKM (downloadble kernel
Module project), RTP is suitble to multiple team's independent works, then summarizes debugging.
But that the generation of the RTP real-time process of vxWorks operating system is executable file .vxe, is similar to
Exe executable file under Windows environment, file load depend on file system.However, embedded system under normal conditions
Resource is limited, and not all embedded system has the storage chip of large capacity to establish file system, and is based on
There is being easily damaged, the file being stored in file system is easy to lose the file system of vxWorks operating system building itself
The problems such as losing or damaging.
In view of the above-mentioned problems, the invention proposes a kind of methods of load operating VxWorks real-time guard process.Specifically
, the protection of the task of RTP is to go to realize based on MMU, the process scheme solve kernel protection and real-time and certainty it
Between contradiction.User can according to need dynamic creation/deletion RTP real-time guard process or only operate in a part of program
In RTP real-time guard process.Each RTP real-time process is completely independent, and the RTP real-time process under VxWorks has complete quiet
Step response can be provided protection against in the case where ensureing real-time response certainty and rapidity.
The executable code that RTP engineering generates is .vxe, and similar exe file, entrance is main function.The RTP work of default
Journey main function terminates, and just the main all tasks created are also all terminated.It can be using the interface of default for RTP process
Function is called, if system starting operation vxWorks, it is necessary to which .vxe program, which is put under a file system, just can be carried out
It calls, such as/TFFS.
Based on above-mentioned analysis, in the method for the invention, memory construction file system is not utilized, but structure based on memory
Temporary file system (Ramdisk) is made, using the startup environment of the virtual .vxe file of temporary file system, to realize .vxe text
The start-up loading of part.
Next the implementation process based on flow chart the present invention is described in detail embodiment.It is walked shown in the flow chart of attached drawing
Suddenly it can be executed in the computer system comprising such as a group of computer-executable instructions.Although showing in flow charts each
The logical order of step, but in some cases, it can be with the steps shown or described are performed in an order that is different from the one herein.
As shown in Figure 1, in one embodiment, constructing a temporary file system (S110) based on memory；It is needing to start
When loading VxWorks real-time guard process, the executable code file of compiled VxWorks real-time guard process is write and is faced
When file system in (S120)；Call the relevant interface of the executable code file of starting VxWorks real-time guard process, starting
Load the executable code file in temporary file system.
In above method step, due to not needing to establish file system, memory space is greatly saved, so that
VxWorks real-time guard process can be using in the embedded product being limited with memory space.Also, due to not using file system
System, caused file is lost or file corruption etc. when can be to avoid file system corruption, improves the entirety of embedded system
Reliability.
Method according to the invention it is possible to it is detached from the start-up loading that file system realizes VxWorks real-time guard process, from
And the operation hardware requirement of VxWorks real-time guard process is reduced, improve the stable of VxWorks real-time guard process
Property.
Further, in one embodiment, the executable code file of VxWorks real-time guard process is stored in specifically
In data storage.Specifically, as shown in Fig. 2, in one embodiment, method the following steps are included:
The executable code file of VxWorks real-time guard process is stored in data storage (S221)；
The executable code file in data storage is read to memory (S222)；
Executable code file in memory is write into temporary file system (S223).
Further, in one embodiment, data storage is flash storage.
Further, in one embodiment, in step S222, in the form of binary read data storage in can
Code file is executed to memory.
Specifically, in one embodiment, vxWorks operating system constructs a temporary file system Ramdisk first；It will
Compiled RTP real-time process .vxe file is stored in Flash, is then read the content of .vxe in the form of binary interior
In depositing, then by file read-write interface, the file in memory is write in temporary file system, then starting .vxe is being called to connect
Mouth starting .vxe program.
Further, in one embodiment, it in step S222, accesses described in the absolute address reading in data storage
Executable code file is to memory.Further, in one embodiment, depositing relative to data for executable code file is obtained
The offset and size of reservoir base address.
Specifically, in one embodiment, in step S222, generating one and executable code file content in memory
The same image file；In step S223, temporary file system is written into the image file in memory, in temporary file system
It is middle to generate corresponding executable code program；Finally, calling the relevant interface of starting executable code program, start-up loading can be held
Line code program.
The method of the present invention passes through the .vxe file that will be stored in Flash chip, first reads memory, then in Ramdisk
Interim .vxe file is constructed, the load operating of .vxe file is finally realized.Method And Principle is succinct, does not need to increase new connect
Mouth function, complexity is low, and maintenance difficulties are low, good reliability.
Further, in one embodiment, method further include:
Executable code program is deleted after start-up loading executable code program.
Specifically, in one embodiment, the corresponding workflow of method is as shown in Figure 3.
S310 judges whether execution parameter is legal, if not conforming to rule terminates program.
S320 reads the .vxe file of flash storage weight to memory, since .vxe file is to be stored directly in Flash
On storage chip, without using file system without directly opening file, pass through the .vxe being pointing directly in Flash memory chip
The initial address of file, and it is obtained in the offset address and size of flash storage weight facing memory base address.
.vxe file map in memory is re-written in temporary file system Ramdisk, in Ramdisk by S330
Generate the identical .vxe file of a content.
S340, calls the function interface of starting .vxe, and the .vxe program in start-up loading Ramdisk realizes .vxe file
Load operating.
S350 deletes the interim .vxe program in Ramdisk.
Method of the invention is not needed using file system, is directly read again from flash storage and is taken .vxe file to memory,
And pour into memory file in Ramdisk again, the same image .vxe file of a content is generated, start-up loading is passed through
.vxe file in Ramdisk realizes the load operating of .vxe file indirectly.For this method using simplicity, principle is flexibly understandable,
Easily realize very much the load operating .vxe program from Flash.
Based on method of the invention, the invention also provides a kind of storage medium, it is stored on the storage medium achievable
The program code of method as described herein.
Further, based on method of the invention, the invention also provides a kind of load operating VxWorks real-time guard into
The system of journey.Specifically, in one embodiment, system includes:
Memory；
Data storage；
Procedure load module is configured under vxworks operating system environment based on memory and data storage is real
Now method as described in the present invention.
While it is disclosed that embodiment content as above but described only to facilitate understanding the present invention and adopting
Embodiment is not intended to limit the invention.Method of the present invention can also have other various embodiments.Without departing substantially from
In the case where essence of the present invention, those skilled in the art make various corresponding changes or change in accordance with the present invention
Shape, but these corresponding changes or deformation all should belong to scope of protection of the claims of the invention.
Claims (10)
1. a kind of method of load operating VxWorks real-time guard process, which is characterized in that the described method includes:
A temporary file system is constructed based on memory；
The executable code file of compiled VxWorks real-time guard process is write in the temporary file system；
Call the relevant interface for starting the executable code file, executable code file described in start-up loading.
2. the method according to claim 1, wherein holding compiled VxWorks real-time guard process
Line code file is write in the temporary file system, comprising:
The executable code file is stored in data storage；
The executable code file in the data storage is read to the memory；
The executable code file in the memory is write in the temporary file system.
3. according to the method described in claim 2, it is characterized in that, reading the executable code in the data storage
File is to memory, wherein the executable code file in the data storage is read in the form of binary to memory.
4. according to the method described in claim 3, it is characterized in that, reading the executable code in the data storage
File is to memory, wherein accesses the absolute address in the data storage and reads the executable code file to memory.
5. according to the method described in claim 4, it is characterized in that, the absolute address accessed in the data storage reads institute
Executable code file is stated to memory, wherein obtain the executable code file relative to the data storage base
The offset and size of address.
6. the method according to any one of claim 2~5, it is characterised in that:
The executable code file in the data storage is read to memory, wherein generate one in the memory
Image file as the executable code file content；
The temporary file system is written into the image file in the memory, the generation pair in the temporary file system
The executable code program answered；
Call the relevant interface for starting the executable code program, executable code program described in start-up loading.
7. according to the method described in claim 6, it is characterized in that, the method also includes:
The executable code program is deleted after executable code program described in start-up loading.
8. a kind of storage medium, which is characterized in that being stored on the storage medium can be achieved such as any one of claim 1-7
The program code of the method.
9. a kind of system of load operating VxWorks real-time guard process, which is characterized in that the system comprises:
Memory；
Data storage；
Procedure load module is configured under vxworks operating system environment store based on the memory and the data
Device realizes such as method of any of claims 1-7.
10. system according to claim 9, which is characterized in that the data storage is flash storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810495580.4A CN110515751B (en) | 2018-05-22 | 2018-05-22 | Method and system for loading and running VxWorks real-time protection process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810495580.4A CN110515751B (en) | 2018-05-22 | 2018-05-22 | Method and system for loading and running VxWorks real-time protection process |
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