CN113568581B - Multi-application resource recovery method and system for embedded equipment - Google Patents
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- CN113568581B CN113568581B CN202110866227.4A CN202110866227A CN113568581B CN 113568581 B CN113568581 B CN 113568581B CN 202110866227 A CN202110866227 A CN 202110866227A CN 113568581 B CN113568581 B CN 113568581B
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- 238000011084 recovery Methods 0.000 title claims abstract description 89
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0608—Saving storage space on storage systems
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/064—Management of blocks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0652—Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/61—Installation
- G06F8/62—Uninstallation
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a multi-application resource recycling method and a system of embedded equipment, and relates to the technical field of embedded systems, wherein the method comprises the steps of monitoring the state of an application program in real time and initializing a recycling marking table for marking recycling resources when the application program is deleted; acquiring all data blocks of the application program, and adding recovery marks to the data blocks to be recovered in the application program based on a recovery mark table; searching based on the recovery marks to obtain all the data blocks containing the recovery marks, and recovering the storage space occupied by the data blocks obtained by searching; and setting the application program address of the application program corresponding to the data block containing the recovery mark as an invalid value, and sorting all the recovered storage spaces. The invention can enable the storage space of the embedded equipment to be more reasonably used.
Description
Technical Field
The invention relates to the technical field of embedded systems, in particular to a multi-application resource recovery method and system of embedded equipment.
Background
With the continuous development of embedded smart cards, it is becoming more common to accommodate multiple card applications on one smart card. Smart cards allocate a certain amount of memory for each application, however, since the total memory on a smart card is often quite limited, the downloading and use of applications is often limited by the lack of available memory.
In order to solve the problem that the storage space of the smart card is excessively occupied, currently, resources applied to the smart card are generally recovered, so that the effective utilization rate of the storage space of the smart card is improved. However, the current smart card resource recycling method is only applicable to Java cards (smart cards developed in Java language), and requires that the embedded device support a Java card virtual machine, and for a multi-application embedded system developed based on C language (in which an application developed based on C language is run), it is difficult to recycle the application resource running in the system.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a multi-application resource recovery method and a system for embedded equipment, which can enable the storage space of the embedded equipment to be used more reasonably.
In order to achieve the above object, the present invention provides a multi-application resource recovery method for an embedded device, which specifically includes the following steps:
monitoring the state of the application program in real time, and initializing a recovery marking table for marking the recovery resources when the application program is deleted;
acquiring all data blocks of the application program, and adding recovery marks to the data blocks to be recovered in the application program based on a recovery mark table;
searching based on the recovery marks to obtain all the data blocks containing the recovery marks, and recovering the storage space occupied by the data blocks obtained by searching;
and setting the application program address of the application program corresponding to the data block containing the recovery mark as an invalid value, and sorting all the recovered storage spaces.
On the basis of the technical proposal, the method comprises the following steps,
the NVM space of the embedded device includes an application management system, an application configuration area and an application data area;
the application management system is used for managing a plurality of application programs in the NVM space;
the application configuration area is used for storing application program addresses;
the application data area is used for storing application program information, and the application program information comprises a plurality of data blocks.
On the basis of the technical proposal, the method comprises the following steps,
the application program addresses stored in the application configuration area are multiple, and each application program address corresponds to one application program;
the application program information stored in the application data area is a plurality of application program information, and each application program information corresponds to one application program;
and the application program addresses and the application program information are in one-to-one correspondence.
Based on the above technical solution, the specific steps of obtaining all the data blocks of the application program include:
obtaining a storage address of the application program information based on the application program address in the application configuration area;
obtaining a storage address of a data block in the application program information based on the storage address of the application program information;
and obtaining the data block based on the storage address of the data block.
On the basis of the technical scheme, the recovery mark is added to the data block to be recovered in the application program based on the recovery mark table, and the specific steps include:
sequentially acquiring application programs in the NVM space, adding recovery marks to the data blocks to be recovered in the current application program based on the recovery mark table, and adding no recovery marks to the data blocks to be recovered;
judging whether the current application program is the last application program in the NVM space:
if yes, stopping adding the marks of the data blocks;
if not, the next application program is acquired, the data block to be recovered in the current application program is marked based on the recovery marking table, then whether the current application program is the last application program is judged, and the process is repeated until the current application program is the last application program.
On the basis of the technical scheme, the method comprises the specific steps of searching all the data blocks containing the recovery marks based on the recovery marks, and recovering the storage space occupied by the data blocks obtained by searching, wherein the specific steps comprise:
traversing all data blocks of all applications and based on the labels on the data blocks:
if the mark on the current data block is a recovery mark, recovering the storage space occupied by the current data block;
if the flag on the current data block is a no-recycle flag, then the current data block is not processed.
On the basis of the technical scheme, the arrangement of all the recovered storage spaces is specifically as follows: all reclaimed memory is consolidated so that the free memory used is in one contiguous space.
The invention provides a multi-application resource recovery system of embedded equipment, which comprises:
an initialization module for monitoring the state of the application program in real time and initializing a recycle mark table for marking recycle resources when the application program is detected to be deleted;
the marking module is used for acquiring all data blocks of the application program and adding a recycling mark to the data blocks to be recycled in the application program based on the recycling mark table;
the recovery module is used for searching all the data blocks containing the recovery marks based on the recovery marks and recovering the storage space occupied by the data blocks obtained by searching;
and the arrangement module is used for setting the application program address of the application program corresponding to the data block containing the recovery mark as an invalid value and arranging all the recovered storage spaces.
On the basis of the technical proposal, the method comprises the following steps,
the NVM space of the embedded device includes an application management system, an application configuration area and an application data area;
the application management system is used for managing a plurality of application programs in the NVM space;
the application configuration area is used for storing application program addresses;
the application data area is used for storing application program information, and the application program information comprises a plurality of data blocks.
On the basis of the technical proposal, the method comprises the following steps,
the application program addresses stored in the application configuration area are multiple, and each application program address corresponds to one application program;
the application program information stored in the application data area is a plurality of application program information, and each application program information corresponds to one application program;
and the application program addresses and the application program information are in one-to-one correspondence.
Compared with the prior art, the invention has the advantages that: the method realizes accurate marking of the resource condition occupied by the application program by a mode of marking based on the recovery marking table, then gradually recovers the space occupied by the data blocks in the application program developed based on the C language, and sorts the recovered storage space, thereby achieving the purpose of fully using the limited storage space of the embedded equipment and enabling the storage space of the embedded equipment to be used more reasonably.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a multi-application resource recycling method of an embedded device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of NVM space of an embedded device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a multi-application resource recovery method of embedded equipment, which realizes accurate marking of the resource condition occupied by an application program by a mode of marking based on a recovery marking table, then gradually recovers the space occupied by a data block in the application program developed based on a C language, and sorts the recovered storage space, thereby achieving the purpose of fully using the limited storage space of the embedded equipment and enabling the storage space of the embedded equipment to be used more reasonably. The embodiment of the invention correspondingly provides a multi-application resource recycling system of the embedded equipment.
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
Referring to fig. 1, the method for recovering multi-application resources of an embedded device provided by the embodiment of the invention specifically includes the following steps:
s1: monitoring the state of the application program in real time, and initializing a recovery marking table for marking the recovery resources when the application program is deleted;
s2: acquiring all data blocks of the application program, and adding recovery marks to the data blocks to be recovered in the application program based on a recovery mark table;
s3: searching based on the recovery marks to obtain all the data blocks containing the recovery marks, and recovering the storage space occupied by the data blocks obtained by searching;
s4: and setting the application program address of the application program corresponding to the data block containing the recovery mark as an invalid value, and sorting all the recovered storage spaces.
In the embodiment of the present invention, referring to fig. 2, an NVM (Non-Volatile Memory) space of an embedded device includes an application management system, an application configuration area, and an application data area; the application management system is used for managing a plurality of application programs in the NVM space; the application configuration area is used for storing application program addresses; the application data area is used for storing application program information, and the application program information comprises a plurality of data blocks. The application configuration area stores a plurality of application program addresses, and each application program address corresponds to one application program. The application program information stored in the application data area is a plurality of application programs, and each application program information corresponds to one application program. One-to-one correspondence between application addresses and application information. In fig. 2, application n addresses represent application addresses, and application n information represents application information.
For application information, it also includes an application method address, a global NVM variable table, a global RAM (Random Access Memory ) variable table, and application auxiliary information, where the global NVM variable table includes a plurality of NVM variables, and the global RAM variable table includes a plurality of RAM variables.
In the embodiment of the invention, the method for acquiring all the data blocks of the application program comprises the following specific steps:
s211: obtaining a storage address of the application program information based on the application program address in the application configuration area;
s212: obtaining a storage address of a data block in the application program information based on the storage address of the application program information;
s213: and obtaining the data block based on the storage address of the data block.
Adding a recovery mark to a data block to be recovered in an application program based on a recovery mark table, wherein the specific steps comprise:
s221: sequentially acquiring application programs in the NVM space, adding recovery marks to the data blocks to be recovered in the current application program based on the recovery mark table, and adding no recovery marks to the data blocks to be recovered;
s222: judging whether the current application program is the last application program in the NVM space:
if yes, stopping adding the marks of the data blocks;
if not, the next application program is acquired, the data block to be recovered in the current application program is marked based on the recovery marking table, then whether the current application program is the last application program is judged, and the process is repeated until the current application program is the last application program.
When the data block is marked, a first application program in the NVM space is firstly obtained, then a recovery mark is added to the data block to be recovered in the first application program based on a recovery mark table, a non-recovery mark is not required to be added to the recovered data block, then whether the application program is the last application program in the NVM space is judged, and if yes, the mark addition to the data block is stopped; if not, acquiring a second application program in the NVM space, adding a recovery mark to a data block to be recovered in the second application program based on a recovery mark table, adding a non-recovery mark to the data block to be recovered, judging whether the application program is the last application program in the NVM space, and if so, stopping adding the mark to the data block; if not, continuing to acquire the next application program in the NVM space, and so on until the current application program with the completed mark is the last application program in the NVM space.
In the embodiment of the invention, all the data blocks containing the recovery mark are obtained based on the recovery mark search, and the storage space occupied by the data blocks obtained by the recovery search is recovered, and the specific steps comprise:
traversing all data blocks of all applications and based on the labels on the data blocks: if the mark on the current data block is a recovery mark, recovering the storage space occupied by the current data block; if the flag on the current data block is a no-recycle flag, then the current data block is not processed.
In the embodiment of the invention, all the recovered storage spaces are arranged, specifically: all reclaimed memory is consolidated so that the free memory used is in one contiguous space. I.e. the space occupied by the valid data in the storage space is as continuous as possible, and the free space is also as continuous as possible.
The multi-application resource recovery method can recover resources of application programs developed based on the C language in the embedded equipment, and the recovery method can be deployed on most of the embedded equipment, so that limited storage space of the embedded equipment is used more reasonably.
According to the multi-application resource recovery method of the embedded equipment, the accurate marking of the resource condition occupied by the application program is realized by marking based on the recovery marking table, then the space occupied by the data blocks in the application program developed based on the C language is gradually recovered, and the recovered storage space is arranged, so that the purpose of fully using the limited storage space of the embedded equipment is achieved, and the storage space of the embedded equipment can be used more reasonably.
The embodiment of the invention provides a multi-application resource recovery system of embedded equipment, which comprises an initialization module, a marking module, a recovery module and a finishing module.
The initialization module is used for monitoring the state of the application program in real time and initializing a recovery mark table for marking the recovery resources when the application program is deleted; the marking module is used for acquiring all data blocks of the application program and adding a recovery mark to the data blocks to be recovered in the application program based on the recovery mark table; the recovery module is used for searching all the data blocks containing the recovery marks based on the recovery marks and recovering the storage space occupied by the data blocks obtained by searching; the arrangement module is used for setting the application program address of the application program corresponding to the data block containing the recovery mark as an invalid value and arranging all the recovered storage spaces.
In the embodiment of the invention, the NVM space of the embedded device comprises an application management system, an application configuration area and an application data area; the application management system is used for managing a plurality of application programs in the NVM space; the application configuration area is used for storing application program addresses; the application data area is used for storing application program information, and the application program information comprises a plurality of data blocks. The application program addresses stored in the application configuration area are multiple, and each application program address corresponds to one application program; the application program information stored in the application data area is a plurality of application programs, and each application program information corresponds to one application program; one-to-one correspondence between application addresses and application information.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Claims (8)
1. The multi-application resource recovery method of the embedded equipment is characterized by comprising the following steps of:
monitoring the state of the application program in real time, and initializing a recovery marking table for marking the recovery resources when the application program is deleted;
acquiring all data blocks of the application program, and adding recovery marks to the data blocks to be recovered in the application program based on a recovery mark table;
searching based on the recovery marks to obtain all the data blocks containing the recovery marks, and recovering the storage space occupied by the data blocks obtained by searching;
setting the application program address of the application program corresponding to the data block containing the recovery mark as an invalid value, and sorting all the recovered storage spaces;
wherein,,
the NVM space of the embedded device includes an application management system, an application configuration area and an application data area;
the application management system is used for managing a plurality of application programs in the NVM space;
the application configuration area is used for storing application program addresses;
the application data area is used for storing application program information, and the application program information comprises a plurality of data blocks.
2. The multi-application resource recycling method of an embedded device according to claim 1, wherein:
the application program addresses stored in the application configuration area are multiple, and each application program address corresponds to one application program;
the application program information stored in the application data area is a plurality of application program information, and each application program information corresponds to one application program;
and the application program addresses and the application program information are in one-to-one correspondence.
3. The method for recycling multi-application resources of an embedded device according to claim 2, wherein the step of obtaining all data blocks of the application program comprises the following specific steps:
obtaining a storage address of the application program information based on the application program address in the application configuration area;
obtaining a storage address of a data block in the application program information based on the storage address of the application program information;
and obtaining the data block based on the storage address of the data block.
4. The method for recycling multi-application resources of an embedded device according to claim 2, wherein the adding recycling marks to the data blocks to be recycled in the application program based on the recycling mark table comprises the following specific steps:
sequentially acquiring application programs in the NVM space, adding recovery marks to the data blocks to be recovered in the current application program based on the recovery mark table, and adding no recovery marks to the data blocks to be recovered;
judging whether the current application program is the last application program in the NVM space:
if yes, stopping adding the marks of the data blocks;
if not, the next application program is acquired, the data block to be recovered in the current application program is marked based on the recovery marking table, then whether the current application program is the last application program is judged, and the process is repeated until the current application program is the last application program.
5. The method for recycling multi-application resources of an embedded device according to claim 4, wherein the searching based on the recycling mark obtains all the data blocks containing the recycling mark, and recycling the storage space occupied by the data blocks obtained by searching, comprises the specific steps of:
traversing all data blocks of all applications and based on the labels on the data blocks:
if the mark on the current data block is a recovery mark, recovering the storage space occupied by the current data block;
if the flag on the current data block is a no-recycle flag, then the current data block is not processed.
6. The method for recycling multi-application resources of an embedded device according to claim 1, wherein the sorting of all the recycled storage spaces is specifically as follows: all reclaimed memory is consolidated so that the free memory used is in one contiguous space.
7. A multi-application resource reclamation system for an embedded device, comprising:
an initialization module for monitoring the state of the application program in real time and initializing a recycle mark table for marking recycle resources when the application program is detected to be deleted;
the marking module is used for acquiring all data blocks of the application program and adding a recycling mark to the data blocks to be recycled in the application program based on the recycling mark table;
the recovery module is used for searching all the data blocks containing the recovery marks based on the recovery marks and recovering the storage space occupied by the data blocks obtained by searching;
the arrangement module is used for setting the application program address of the application program corresponding to the data block containing the recovery mark as an invalid value and arranging all the recovered storage spaces;
wherein,,
the NVM space of the embedded device includes an application management system, an application configuration area and an application data area;
the application management system is used for managing a plurality of application programs in the NVM space;
the application configuration area is used for storing application program addresses;
the application data area is used for storing application program information, and the application program information comprises a plurality of data blocks.
8. The multi-application resource recovery system of an embedded device of claim 7, wherein:
the application program addresses stored in the application configuration area are multiple, and each application program address corresponds to one application program;
the application program information stored in the application data area is a plurality of application program information, and each application program information corresponds to one application program;
and the application program addresses and the application program information are in one-to-one correspondence.
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| CN103345417A (en) * | 2013-06-06 | 2013-10-09 | 华为技术有限公司 | Method and device for recovering storage space |
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| CN106055372A (en) * | 2016-06-30 | 2016-10-26 | 乐视控股（北京）有限公司 | Method and device for uninstalling application |
| CN110399310A (en) * | 2018-04-18 | 2019-11-01 | 杭州宏杉科技股份有限公司 | A kind of recovery method and device of memory space |
| CN110659217A (en) * | 2019-08-30 | 2020-01-07 | 苏州浪潮智能科技有限公司 | Garbage recycling method, device and equipment for solid state disk and storage medium |
| CN111562983A (en) * | 2020-04-30 | 2020-08-21 | Oppo（重庆）智能科技有限公司 | Memory optimization method and device, electronic equipment and storage medium |
| CN112162701A (en) * | 2020-09-18 | 2021-01-01 | 北京浪潮数据技术有限公司 | Storage space recovery method, device, equipment and computer storage medium |
| CN112395212A (en) * | 2020-11-05 | 2021-02-23 | 华中科技大学 | Method and system for reducing garbage recovery and write amplification of key value separation storage system |
| CN112732191A (en) * | 2021-01-08 | 2021-04-30 | 苏州浪潮智能科技有限公司 | Method, system, device and medium for merging tree merging data based on log structure |
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