CN113703985B - Memory management method, medium and electronic equipment - Google Patents
Memory management method, medium and electronic equipment Download PDFInfo
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- CN113703985B CN113703985B CN202111114662.8A CN202111114662A CN113703985B CN 113703985 B CN113703985 B CN 113703985B CN 202111114662 A CN202111114662 A CN 202111114662A CN 113703985 B CN113703985 B CN 113703985B
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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
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
- G06F9/5016—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals the resource being the memory
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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
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
- G06F9/5022—Mechanisms to release resources
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- General Physics & Mathematics (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention provides a memory management method, a medium and electronic equipment. The memory management method comprises the following steps: detecting whether a storage medium is accessed to the system; executing a first management sub-method when the storage medium is detected to be accessed to the system; detecting the memory condition of the system; and when the shortage of the memory is detected, executing a second management sub-method. The memory management method can reduce or even eliminate the problem of blocking when writing the document.
Description
Technical Field
The present invention relates to a memory management method, and in particular, to a memory management method, a medium, and an electronic device.
Background
With the development of technology, many electronic devices have audio and video recording functions, such as video recorders, smartphones, computers equipped with cameras, and the like. In practical application, when an electronic device is used for recording an audio and video file, the situation of blocking and/or frame loss often occurs, which causes problems of frame missing, information loss and the like in the acquired audio and video file, thereby influencing the integrity of the file.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a memory management method, a medium and an electronic device, which are used for solving the above-mentioned related problems in the prior art.
To achieve the above and other related objects, a first aspect of the present invention provides a memory management method, applied to a system, the memory management method comprising: detecting whether a storage medium is accessed to the system; executing a first management sub-method when the storage medium is detected to be accessed to the system; detecting the memory condition of the system; executing a second management sub-method when the shortage of the memory is detected; the first management sub-method comprises the following steps: acquiring FAT table information of a first storage medium, wherein the first storage medium refers to the detected storage medium accessed to the system; creating a plurality of memory pages in a memory according to FAT table information of the first storage medium as a first memory page; writing FAT table information of the first storage medium into the first memory page; adding a content marking attribute for the first memory page, and configuring the content marking attribute of the first memory page to mark the first memory page as storing important FAT table information; the second management sub-method comprises the following steps: acquiring a second memory page to be released; judging whether the second memory page is marked as storing important FAT table information or not according to the content marking attribute of the second memory page; when the second memory page is marked as storing important FAT table information, judging whether a second storage medium is in a separated state with the system, wherein the second storage medium is a storage medium corresponding to the FAT table information stored in the second memory page; and when the second memory page is not marked as storing important FAT table information and/or the second storage medium is in a separated state with the system, releasing the second memory page, otherwise, keeping the information of the second memory page unchanged.
In an embodiment of the first aspect, the storage medium is a magnetic disk or a memory card, the magnetic disk is connected to the system in a mounted manner, and the memory card is connected to the system in an inserted manner.
In an embodiment of the first aspect, the memory management method further includes: and responding to an attribute configuration instruction input by a user to configure the content marking attribute of the first memory page.
In an embodiment of the first aspect, the memory management method further includes: and executing the second management sub-method in response to a memory release instruction input by a user.
In an embodiment of the first aspect, the first storage medium is configured to store video frames in real time.
In an embodiment of the first aspect, the implementation method for storing the acquired video frames in the first storage medium in real time includes: acquiring FAT table information of the first storage medium from a memory of the system; and storing the acquired video frames to the first storage medium in real time according to the FAT table information of the first storage medium.
A second aspect of the present invention provides another memory management method, applied to a system, where the memory management method includes: when detecting that a storage medium is accessed to the system, acquiring FAT table information of the storage medium; creating a plurality of memory pages in the memory according to the FAT table information as a first memory page; writing the FAT table information into the first memory page; and adding a content marking attribute to the first memory page, and configuring the content marking attribute of the first memory page to mark the first memory page as storing important FAT table information, wherein the first memory page marked as storing important FAT table information is forbidden to be released in a lasting period of the first memory page, and the lasting period is a period between an access time and a separation time of the storage medium.
A third aspect of the present invention provides a memory management method, applied to a system, where the memory management method includes: when the memory shortage is detected or a memory release instruction input by a user is received, a second memory page to be released is acquired; judging whether the second memory page is marked as storing important FAT table information or not according to the content marking attribute of the second memory page; when the second memory page is marked as storing important FAT table information, judging whether a second storage medium is in a separated state with the system, wherein the second storage medium is a storage medium corresponding to the FAT table information stored in the second memory page; and when the second memory page is not marked as storing important FAT table information and/or the second storage medium is in a separated state with the system, releasing the second memory page, otherwise, keeping the information of the second memory page unchanged.
A fourth aspect of the present invention provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the memory management method of any of the first, second or third aspects of the present invention.
A fifth aspect of the present invention provides an electronic device, comprising: a memory having a computer program stored thereon; and the processor is in communication connection with the memory and executes the memory management method according to any one of the first aspect, the second aspect or the third aspect of the invention when the computer program is called.
As described above, the memory management method according to one or more embodiments of the present invention has the following advantages:
the memory management method comprises a first management sub-method and a second management sub-method, wherein the first management sub-method can write the complete FAT table information of the storage medium into a memory page, and the second management sub-method can ensure that the memory page written with the FAT table information of the storage medium cannot be released when the storage medium is connected with a system. Based on the method, when recording the audio and video file, FAT table information of the storage medium can be directly read from the memory, so that the situation of jamming or even frame loss can not occur, and the integrity of the file is ensured.
Drawings
FIG. 1A is a flow chart illustrating a memory management method according to an embodiment of the invention.
FIG. 1B is a flowchart showing a memory management method according to an embodiment of the invention in step S12.
FIG. 1C is a flowchart illustrating a memory management method according to an embodiment of the invention in step S14.
FIG. 2 is a flow chart showing key steps of a memory management method according to an embodiment of the invention.
FIG. 3 is a flow chart illustrating a memory management method according to an embodiment of the invention.
FIG. 4 is a flow chart illustrating a memory management method according to an embodiment of the invention.
Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Description of element reference numerals
500. Electronic equipment
510. Memory device
520. Processor and method for controlling the same
530. Display device
S11 to S14 steps
S121 to S124 steps
S141 to S144 steps
S21 to S22 steps
S31 to S34 steps
S41 to S44 steps
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the illustrations, not according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex. Moreover, relational terms such as "first," "second," and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
When an electronic device is used for recording an audio and video file, the situation of blocking and/or frame loss often occurs, which can cause the problems of frame missing, information loss and the like in the acquired audio and video file, thereby influencing the integrity of the file. The inventor has made a great deal of research and practice to solve this problem, and finally confirms that the situation of jamming and/or frame loss occurs when recording audio and video files, and the reason is that: in the prior art, when writing in an audio and video file, a FAT table corresponding to the file is firstly searched from a memory, if the FAT table cannot be searched in the memory, the corresponding FAT table is required to be read into the memory from a storage medium such as a disk, and if the storage medium is busy at the moment, the FAT table can take a long time to read from the storage medium, so that the phenomena of audio and video frame loss, clamping, etc. are caused; in addition, the FAT table is stored in the memory in the form of a memory page (page), and although the memory page accessed by the FAT table is stored in the memory, when the memory is insufficient or the application layer performs a cache clearing operation, the FAT table information in the corresponding memory page is cleared, and then the FAT table still needs to be read in the storage medium if the FAT table is to be obtained. Based on the above, the invention provides a memory management method for reducing or even eliminating frame loss and/or blocking existing in the recording process of an audio/video file.
In an embodiment of the present invention, the memory management method is applied to a software system in an electronic device, for example, an audio/video recording device. Specifically, referring to fig. 1A, the memory management method in this embodiment includes:
s11, detecting whether a storage medium is accessed to the system. Wherein the storage medium is, for example, a magnetic disk or a memory card, the magnetic disk is connected to the system in a mounted manner and separated from the system in an uninstalled manner, and the memory card is connected to the system in an inserted manner and separated from the system in an extracted manner.
S12, when the storage medium is detected to be accessed into the system, executing a first management sub-method.
S13, detecting the memory condition of the system.
And S14, when the shortage of the memory is detected, executing a second management sub-method, wherein in the step S14, whether the shortage of the memory exists or not can be judged according to the actual requirement, for example, when the quantity of the available memory in the system is smaller than a preset threshold value, the shortage of the memory in the system can be considered.
Referring to fig. 1B, the first management sub-method in this embodiment includes:
s121, acquiring FAT table information of a first storage medium, wherein the first storage medium refers to the detected storage medium accessed to the system, and the acquired FAT table information of the first storage medium is complete in the step.
S122, creating a plurality of memory pages in the memory according to the FAT table information of the first storage medium as a first memory page. Specifically, a corresponding number of memory pages are created from the memory according to the FAT table size of the first storage medium as the first memory pages. For example, if the FAT table size of the first storage medium is 1MB and the size of a single memory page is 4KB, then step S122 needs to create 256 memory pages in the memory as the first memory page.
S123, writing FAT table information of the first storage medium into the first memory page.
S124, adding content marking attribute for the first memory page, and configuring the content marking attribute of the first memory page to mark the first memory page as storing important FAT table information. The first memory page marked as storing important FAT table information is forbidden to be released in a duration period of the first memory page, wherein the duration period is a time period between an access time of the storage medium and a separation time, the access time is a time when the first storage medium is accessed to the system, and the separation time is a time when the first storage medium is separated from the system.
Referring to fig. 1C, the second management sub-method in this embodiment includes:
s141, acquiring a second memory page to be released. The second memory page refers to a free memory page in the memory, for example, a memory page that is not used for a long time, and the second memory page may be the first memory page or may be another memory page other than the first memory page.
S142, judging whether the second memory page is marked as storing important FAT table information according to the content marking attribute of the second memory page. Specifically, if the second memory page does not have the content marking attribute, the second memory page is indicated that the FAT table information is not stored; if the second memory page has a content tag attribute, whether the second memory page is marked with important FAT table information is determined according to the content tag attribute.
S143, judging whether a second storage medium is in a separated state with the system when the second memory page is marked as storing important FAT table information, wherein the second storage medium is a storage medium corresponding to the FAT table information stored in the second memory page.
S144, when the second memory page is not marked as storing important FAT table information and/or the second storage medium is in a separated state with the system, releasing the second memory page, otherwise, keeping the information of the second memory page unchanged.
As can be seen from the above description, the memory management method according to the present embodiment includes a first management sub-method and a second management sub-method. The first management sub-method can write the complete FAT table information of the first storage medium into the memory page, and the second management sub-method can ensure that the memory page written with the FAT table information is not automatically released by the system when the second storage medium is in an access system state. Based on this, when writing a file into the first storage medium, the FAT table information of the first storage medium can be directly read from the memory without reading data from the first storage medium, so that no write-in stuck condition occurs. Similarly, when recording audio and video files and writing the files into the first storage medium, the conditions of jamming and frame loss are avoided, and therefore the integrity of the files is guaranteed.
In addition, in this embodiment, when the storage medium access system is detected, the FAT table information of the storage medium is read and written into the memory, at this time, since the storage medium is just accessed to the system, and is usually idle, the FAT table information of the storage medium can be quickly read and written into the first memory page, and if the data needs to be written into the storage medium at this time, no blocking and/or frame loss occurs.
It should be noted that, in this embodiment, the first storage medium is used to store files, including but not limited to audio/video files. For audio and video files, the memory management method of the embodiment can reduce or even eliminate the problem of blocking and frame loss during file writing, while for non-audio and video files, the memory management method of the embodiment can reduce or even eliminate the problem of blocking during writing. In addition, the steps S11 to S12 and S13 to S14 may be performed simultaneously or sequentially, and the order of execution is not limited by the present invention.
In an embodiment of the present invention, the memory management method further includes: and responding to an attribute configuration instruction input by a user to configure the content marking attribute of the first memory page. Specifically, the user may mark the memory page as storing important FAT table information or as not storing important FAT table information by inputting the attribute configuration instruction.
The embodiment allows the user to modify the content marking attribute of the first memory page by inputting an instruction according to actual requirements, thereby allowing a specific first memory page to be released in a continuous period to increase the available memory as much as possible.
In an embodiment of the present invention, the memory management method further includes: and executing the second management sub-method in response to a memory release instruction input by a user. The embodiment allows the user to control the system to execute the second management sub-method by inputting the instruction so as to release the free memory pages in the memory.
In an embodiment of the present invention, the first storage medium is configured to store the acquired video frames in real time, where the video frames are acquired by a video acquisition device such as a camera.
Optionally, referring to fig. 2, the implementation method for storing the acquired video frames in the first storage medium in real time includes:
s21, acquiring FAT table information of the first storage medium from the memory of the system.
S22, storing the collected video frames to the first storage medium in real time according to FAT table information of the first storage medium.
In this embodiment, since the complete FAT table information of the first storage medium is stored in the first memory page of the memory, and the first memory page storing the FAT table information is not released in the lifetime thereof, step S21 can always read the FAT table information of the first storage medium from the memory as long as the first storage medium is in the state of accessing the system. The present embodiment can reduce or even eliminate the problem of video frames being stuck and/or lost in storage, relative to the way FAT table information is read from the first storage medium.
The invention also provides another memory management method which is applied to a system. Specifically, referring to fig. 3, in an embodiment of the present invention, the memory management method includes:
s31, when the storage medium is detected to be accessed into the system, FAT table information of the storage medium is acquired.
S32, creating a plurality of memory pages in the memory according to the FAT table information to serve as a first memory page.
S33, writing the FAT table information into the first memory page.
And S34, adding a content marking attribute to the first memory page, and configuring the content marking attribute of the first memory page to mark the first memory page as storing important FAT table information, wherein the first memory page marked as storing important FAT table information is forbidden to be released in a lasting period of the first memory page, and the lasting period is a period between an access time and a separation time of the storage medium.
The steps S31 to S34 are similar to the steps S121 to S124 shown in fig. 1B, and are not repeated here for saving the description space. As can be seen from the above description, the memory management method according to the present embodiment can write the complete FAT table information into the first memory page of the memory when the storage medium is accessed to the system, and can ensure that the first memory page is not released within the lifetime thereof by adding and configuring the memory tag attribute of the first memory page. Therefore, according to the memory management method of this embodiment, only the FAT table information needs to be read from the memory when the file needs to be written into the storage medium.
The invention also provides a memory management method which is applied to a system. Specifically, referring to fig. 4, in an embodiment of the present invention, the memory management method includes:
s41, when the memory shortage is detected or a memory release instruction input by a user is received, a second memory page to be released is acquired.
S42, judging whether the second memory page is marked as storing important FAT table information according to the content marking attribute of the second memory page.
S43, judging whether a second storage medium is in a separated state with the system when the second memory page is marked as storing important FAT table information, wherein the second storage medium is a storage medium corresponding to the FAT table information stored in the second memory page.
S44, when the second memory page is not marked as storing important FAT table information and/or the second storage medium is in a separated state with the system, releasing the second memory page, otherwise, keeping the information of the second memory page unchanged.
The steps S41 to S44 are similar to the steps S141 to S144 shown in fig. 1C, and are not repeated here for saving the description space. As can be seen from the above description, the memory management method of the present embodiment does not release the memory page marked as storing the important FAT table information when the second storage medium is in the state of accessing the system, so as to ensure that the FAT table information of the second storage medium is not automatically deleted by the system within the lifetime of the memory page after being written into the memory page.
Based on the above description of the memory management method, the present invention also provides a computer-readable storage medium having a computer program stored thereon. The computer program, when executed by a processor, implements the memory management method shown in fig. 1A, 3 or 4.
Based on the above description of the memory management method, the invention also provides an electronic device. In particular, referring to fig. 5, in an embodiment of the invention, the electronic device 500 includes a memory 510 and a processor 520. The memory 510 stores a computer program, and the processor 520 is communicatively connected to the memory 510, and implements the memory management method shown in fig. 1A, 3 or 4 when the computer program is called.
Optionally, the electronic device 500 further comprises a display 530, where the display 530 is communicatively connected to the memory 510 and the processor 520, for displaying a related GUI interaction interface of the memory management method.
The protection scope of the memory management method of the present invention is not limited to the execution sequence of the steps listed in this embodiment, and all the schemes implemented by adding or removing steps and replacing steps according to the prior art made by the principles of the present invention are included in the protection scope of the present invention.
In summary, the memory management method according to one or more embodiments of the present invention includes a first management sub-method and a second management sub-method. The first management sub-method can write the complete FAT table information of the first storage medium into the memory page, and the second management sub-method can ensure that the memory page written with the FAT table information is not released when the second storage medium is in an access system state. Based on this, when writing a file into the first storage medium, the FAT table information of the first storage medium can be directly read from the memory without reading data from the first storage medium, so that no write-in stuck condition occurs. Similarly, when recording audio and video files and writing the files into the first storage medium, the conditions of jamming and frame loss are avoided, and therefore the integrity of the files is guaranteed. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A memory management method, applied to a system, comprising:
detecting whether a storage medium is accessed to the system;
executing a first management sub-method when the storage medium is detected to be accessed to the system;
detecting the memory condition of the system;
executing a second management sub-method when the shortage of the memory is detected;
the first management sub-method comprises the following steps:
acquiring FAT table information of a first storage medium, wherein the first storage medium refers to the detected storage medium accessed to the system;
creating a plurality of memory pages in a memory according to FAT table information of the first storage medium as a first memory page;
writing FAT table information of the first storage medium into the first memory page;
adding a content marking attribute for the first memory page, and configuring the content marking attribute of the first memory page to mark the first memory page as storing important FAT table information;
the second management sub-method comprises the following steps:
acquiring a second memory page to be released;
judging whether the second memory page is marked as storing important FAT table information or not according to the content marking attribute of the second memory page;
when the second memory page is marked as storing important FAT table information, judging whether a second storage medium is in a separated state with the system, wherein the second storage medium is a storage medium corresponding to the FAT table information stored in the second memory page;
and when the second memory page is not marked as storing important FAT table information and/or the second storage medium is in a separated state with the system, releasing the second memory page, otherwise, keeping the information of the second memory page unchanged.
2. The memory management method according to claim 1, wherein: the storage medium is a magnetic disk or a memory card, the magnetic disk is connected with the system in a mounting mode, and the memory card is connected with the system in an inserting mode.
3. The memory management method according to claim 1 or 2, characterized in that the memory management method further comprises: and responding to an attribute configuration instruction input by a user to configure the content marking attribute of the first memory page.
4. A memory management method according to any one of claims 1-3, wherein the memory management method further comprises: and executing the second management sub-method in response to a memory release instruction input by a user.
5. The memory management method according to claim 1, wherein: the first storage medium is for storing video frames in real time.
6. The memory management method according to claim 5, wherein the implementation method for storing the acquired video frames in the first storage medium in real time includes:
acquiring FAT table information of the first storage medium from a memory of the system;
and storing the acquired video frames to the first storage medium in real time according to the FAT table information of the first storage medium.
7. A memory management method, applied to a system, comprising:
when detecting that a storage medium is accessed to the system, acquiring FAT table information of the storage medium;
creating a plurality of memory pages in the memory according to the FAT table information as a first memory page;
writing the FAT table information into the first memory page;
and adding a content marking attribute to the first memory page, and configuring the content marking attribute of the first memory page to mark the first memory page as storing important FAT table information, wherein the first memory page marked as storing important FAT table information is forbidden to be released in a lasting period of the first memory page, and the lasting period is a period between an access time and a separation time of the storage medium.
8. A memory management method, applied to a system, comprising:
when the memory shortage is detected or a memory release instruction input by a user is received, a second memory page to be released is acquired;
judging whether the second memory page is marked as storing important FAT table information or not according to the content marking attribute of the second memory page;
when the second memory page is marked as storing important FAT table information, judging whether a second storage medium is in a separated state with the system, wherein the second storage medium is a storage medium corresponding to the FAT table information stored in the second memory page;
and when the second memory page is not marked as storing important FAT table information and/or the second storage medium is in a separated state with the system, releasing the second memory page, otherwise, keeping the information of the second memory page unchanged.
9. A computer-readable storage medium having stored thereon a computer program, characterized by: the computer program, when executed by a processor, implements the memory management method of any of claims 1-8.
10. An electronic device, the electronic device comprising:
a memory having a computer program stored thereon;
a processor, communicatively coupled to the memory, which when invoked performs the memory management method of any one of claims 1-8.
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| KR20060073407A (en) * | 2004-12-24 | 2006-06-28 | 후지쯔 가부시끼가이샤 | Method and program for file information write processing |
| CN101140586A (en) * | 2007-09-30 | 2008-03-12 | 浙江大学 | Method for building file systems on NAND flash memory in embedded system |
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