CN107291394B - Storage space reservation method and device - Google Patents
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- CN107291394B CN107291394B CN201710500842.7A CN201710500842A CN107291394B CN 107291394 B CN107291394 B CN 107291394B CN 201710500842 A CN201710500842 A CN 201710500842A CN 107291394 B CN107291394 B CN 107291394B
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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
- G06F3/0629—Configuration or reconfiguration of storage systems
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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
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0644—Management of space entities, e.g. partitions, extents, pools
Abstract
The disclosure relates to a storage space reservation method and device, which are used for ensuring that an operating system and/or an application program of electronic equipment can normally run when the space is insufficient, and improving the reliability of the electronic equipment. The method comprises the following steps: defining a reserved variable for reserving a storage space; assigning the size of a preset space to the reserved variable; and reserving the storage space with the preset space size in the storage module through the reserved variable so as to be used by an operating system and/or an application program.
Description
Technical Field
The present disclosure relates to the field of information technologies, and in particular, to a storage space reservation method and apparatus.
Background
With the continuous development of scientific technology, electronic technology has also been rapidly developed, and various electronic devices, such as mobile phones, PADs (tablet computers), etc., have become an indispensable part of people's entertainment life, and these electronic devices enrich people's life. Electronic devices are all loaded with operating systems, and the Android (Android) system is one of the mainstream operating systems at present.
Currently, in the Android system, a storage module, such as SDcard (Secure Digital MemoryCard), may be hung in FUSE (file system in user space). After the FUSE is used,/data (data file)/sdcard (user file) share the same partition, and in the partition, the storage space is dynamically accessed by/data and/sdcard, so that the user can use flexibly.
However,/data and/sdcard dynamically occupy data partition space, if the user fills the entire partition with/sdcard, the operating system or some applications will not run properly.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a method and an apparatus for reserving a storage space, which are used to ensure that an operating system and/or an application program of an electronic device can operate normally when the space is insufficient, and improve the reliability of the electronic device.
According to a first aspect of the embodiments of the present disclosure, there is provided a storage space reservation method applied to an electronic device, including:
defining a reserved variable for reserving a storage space;
assigning the size of a preset space to the reserved variable;
and reserving the storage space with the preset space size in the storage module through the reserved variable so as to allow an operating system and/or an application program to directly use the storage space when the space is insufficient.
Optionally, after reserving the storage space with the size of the preset space in the storage module, the method further includes:
detecting the data volume of data to be written when receiving the operation of writing data;
and when the data volume of the data to be written is larger than the available space size of the storage module, outputting prompt information for prompting that the storage space is insufficient, wherein the available space size is the space size obtained by subtracting the preset space size from the total free space size included by the storage module.
Optionally, defining a reserved variable for reserving a storage space includes:
the reserved variable is defined in a data structure in a service used to manage storage space.
Optionally, assigning the size of the preset space to the reserved variable includes:
and when the service is started, transmitting the preset space size to the reserved variable through an option for reserving a storage space.
Optionally, reserving, by using the reserved variable, a storage space with the size of the preset space in a storage module includes:
and when the storage module is mounted, transmitting the size of the reserved space to a user space file system FUSE in a kernel state through the reserved variable so as to reserve the storage space with the size of the preset space.
According to a second aspect of the embodiments of the present disclosure, there is provided a storage space reservation apparatus applied to an electronic device, including:
a definition module configured to define a reserved variable for reserving a storage space;
an assignment module configured to assign a preset space size to the reserved variable;
and the reservation module is configured to reserve a storage space with the preset space size in the storage module through the reservation variable, so that the operating system and/or the application program can directly use the storage space when the space is insufficient.
Optionally, the apparatus further comprises:
the detection module is configured to detect the data volume of the data to be written when receiving the operation of writing the data after reserving the storage space with the preset space size in the storage module;
and the output module is configured to output prompt information for prompting that the storage space is insufficient when the data volume of the data to be written is larger than the available space size of the storage module, wherein the available space size is the space size obtained by subtracting the preset space size from the total free space size included in the storage module.
Optionally, the defining module further includes:
a definition submodule configured to define the reserved variable in a data structure in a service for managing storage space.
Optionally, the assignment module further includes:
a transfer module configured to transfer the preset space size to the reserved variable through an option for reserving a storage space when the service is started.
Optionally, the reservation module further includes:
and the reserved submodule is configured to transmit the size of the reserved space to a user space file system FUSE in a kernel state through the reserved variable when the storage module is mounted so as to reserve the storage space with the size of the preset space.
According to a third aspect of the embodiments of the present disclosure, there is provided a storage space reservation apparatus, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
defining a reserved variable for reserving a storage space;
assigning the size of a preset space to the reserved variable;
and reserving the storage space with the preset space size in the storage module through the reserved variable so as to allow an operating system and/or an application program to directly use the storage space when the space is insufficient.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the steps of the storage space reservation method provided by the first aspect of the present disclosure.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the size of the reserved space can be set, the defined reserved variable is assigned, then the storage space with the size of the preset space is reserved in the storage module, and the reserved space can be used by an operating system and/or an application program. Therefore, the data written by the user through the sdcard cannot occupy the reserved storage space, the operating system and the application program of the electronic equipment can also use the reserved storage space when the space is insufficient, the system and the application are not crashed to be incapable of being started, and the reliability of the electronic equipment is high.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flow chart illustrating a method of reserving storage space according to an example embodiment.
Fig. 2 is a block diagram illustrating a storage space reservation apparatus according to an example embodiment.
Fig. 3 is another block diagram illustrating a storage space reservation apparatus according to an example embodiment.
Fig. 4 is another block diagram illustrating a storage space reservation apparatus according to an example embodiment.
Fig. 5 is another block diagram illustrating a storage space reservation apparatus according to an example embodiment.
Fig. 6 is another block diagram illustrating a storage space reservation apparatus according to an example embodiment.
Fig. 7 is a block diagram illustrating a storage space reservation apparatus according to an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The electronic device in the embodiment of the present disclosure may be, for example, a different electronic device such as a PC, a PAD, and a mobile phone based on an Android system, which is not limited in the embodiment of the present disclosure.
In addition, the term "and/or" herein is an association relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.
Fig. 1 is a flowchart illustrating a method for reserving a storage space, according to an exemplary embodiment, where the method for reserving a storage space is used in an electronic device, as shown in fig. 1, and includes the following steps.
In step S11, a reserved variable for reserving a storage space is defined.
In step S12, a preset space size is assigned to the reserved variable.
In step S13, a storage space with a preset space size is reserved in the storage module by reserving a variable for the operating system and/or the application program.
The preset space size may be a preset space size, and as to what the preset space size is, the embodiment of the present disclosure is not limited, for example, the preset space size may be set to be 128M, or the preset space size may also be set to be 64M, and the like.
And assigning the preset space size to a defined reserved variable, and reserving a storage space with the preset space size in a storage module through the reserved variable for an operating system and/or an application program installed in the electronic equipment. For example, if the preset space size is set to 128M, the value 128M is assigned to a defined reserved variable (e.g., defined as reserved _ size variable), that is, reserved _ size 134217728(128M 134217728 bytes), so that the reserved 128M memory space can be reserved in the memory module through reserved _ size, and the system process and/or the application program of the operating system can directly use the reserved 128M memory space when the space is insufficient, thereby ensuring the normal operation of the system and the application, and ensuring better reliability of the electronic device.
Optionally, after a storage space with a preset space size is reserved in the storage module, the data size of the data to be written may be detected when the operation of writing the data is received, and then when the data size of the data to be written is larger than the available space size of the storage module, prompt information for prompting that the storage space is insufficient may be output, where the available space size is a space size obtained by subtracting the preset space size from the total free space size included in the storage module.
That is to say, after a storage space for an operating system and/or an application program is reserved in a storage module, the reserved space is used by the operating system and/or the application program, and a file written by a user based on FUSE cannot use the reserved storage space, so if the data amount of data to be written by the user is larger than the space size (i.e. the available space size) obtained by subtracting the preset space size from the free space size in the storage module, and the data cannot be written, a prompt message can be output to prompt the user that the storage space is insufficient.
For example, the total space size of the storage module is 8G, the preset space size is 128M, the current total free space size of the storage module is 500M, the data amount of the data to be written by the user is 400M, then the data to be written cannot be written because the data amount of the data to be written is larger than the space size obtained by subtracting the preset space size from the free space size (400M >500M-128M), and the electronic device may output a prompt message, such as "storage space is insufficient", and the like. By the mode, the user cannot write the data into the reserved storage space, so that the reserved space can be ensured to be only used by an operating system and/or an application program, and meanwhile, the user can know that the written data exceeds the available space, and the reliability of the electronic equipment is high.
Alternatively, the reserved variable for reserving the storage space may be defined in a data structure in a service for managing the storage space.
For example, a reserved _ size variable (i.e., a reserved variable) may be set in the data structure fuse _ global in the SDcard service for managing SDcard storage space to hold the set size of the storage space to be reserved. Therefore, the reserved variables can be well defined, and the storage space can be reserved by the reserved variables.
Optionally, the preset space size is assigned to the reserved variable, and the preset space size may be transferred to the reserved variable through an option for reserving a storage space when the service is started.
For example, if the preset space size is 128M, the reserved variable is reserved _ size, and the service for managing the storage space may be sdcard service, then when the parent process vold service creating the sdcard service starts the sdcard service, the preset space size 128M may be passed to the reserved variable through an option (for example, referred to as an "r option") for reserving the storage space, that is, information that the preset space size is 128M is saved in the reserved _ size. Therefore, the size of the space to be reserved can be directly assigned to the reserved variable, and the storage space can be further reserved through the reserved variable.
Optionally, a storage space with a preset space size is reserved in the storage module through the reserved variable, and when the storage module is mounted, the reserved space size can be transmitted to the user space file system FUSE in the kernel state through the reserved variable, so that the storage space with the preset space size is reserved.
For example, when mounting (mount)/sdcard in sdcard service, a preset space size may be transferred to the FUSE file system in a kernel state through reserved _ size, thereby implementing the reservation of the storage space. Therefore, a certain space can be reserved in the storage module for the operating system and/or the application program to use, the operating system or the application program is prevented from being crashed, and the reliability of the electronic equipment is high.
Fig. 2 is a block diagram illustrating a storage space reservation apparatus 100 according to an exemplary embodiment. Referring to fig. 2, the apparatus 100 includes a definition module 121, an assignment module 122, and a reservation module 123.
The defining module 121 is configured to define a reserved variable for reserving a storage space;
the assignment module 122 is configured to assign a preset space size to a reserved variable;
the reservation module 123 is configured to reserve a storage space of a preset space size in the storage module by reserving a variable for use by the operating system and/or the application program.
Optionally, as shown in fig. 3, the apparatus 100 further includes:
the detecting module 124 is configured to, after reserving a storage space with a preset space size in the storage module, detect a data amount of data to be written when receiving an operation of writing data;
and the output module 125 is configured to output prompt information for prompting that the storage space is insufficient when the data amount of the data to be written is larger than the available space size of the storage module, wherein the available space size is the space size obtained by subtracting the preset space size from the total free space size included in the storage module.
Optionally, as shown in fig. 4, the defining module 121 further includes:
a definition submodule 1211 configured to define a reserved variable in a data structure in a service for managing a storage space.
Optionally, as shown in fig. 5, the assignment module 122 further includes:
a transfer module 1221 configured to transfer the preset space size to a reserved variable through an option for reserving a storage space when starting the service.
Optionally, as shown in fig. 6, the reservation module 123 further includes:
the reserved submodule 1231 is configured to, when the storage module is mounted, transmit the size of the reserved space to the user space file system FUSE in the kernel state through a reserved variable, so as to reserve a storage space with the size of the preset space.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
The present disclosure also provides a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the storage space reservation method provided by the present disclosure.
Fig. 7 is a block diagram illustrating a storage space reservation apparatus 700 according to an example embodiment. For example, the apparatus 700 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 7, apparatus 700 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input/output (I/O) interface 712, a sensor component 714, and a communication component 716.
The processing component 702 generally controls overall operation of the device 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 702 may include one or more processors 720 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 702 may include one or more modules that facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 707 and the processing component 702.
The memory 704 is configured to store various types of data to support operations at the apparatus 700. Examples of such data include instructions for any application or method operating on device 700, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 704 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power component 706 provides power to the various components of the device 700. The power components 706 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the apparatus 700.
The multimedia component 708 includes a screen that provides an output interface between the device 700 and a user, in some embodiments, the screen may include a liquid crystal display (L CD) and a Touch Panel (TP). if the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
The audio component 710 is configured to output and/or input audio signals. For example, audio component 710 includes a Microphone (MIC) configured to receive external audio signals when apparatus 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 704 or transmitted via the communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.
The I/O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 714 includes one or more sensors for providing status assessment of various aspects of the apparatus 700. For example, sensor assembly 714 may detect an open/closed state of device 700, the relative positioning of components, such as a display and keypad of device 700, sensor assembly 714 may also detect a change in position of device 700 or a component of device 700, the presence or absence of user contact with device 700, orientation or acceleration/deceleration of device 700, and a change in temperature of device 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 716 is configured to facilitate wired or wireless communication between the apparatus 700 and other devices. The apparatus 700 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 716 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), programmable logic devices (P L D), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 704 comprising instructions, executable by the processor 720 of the device 700 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. A storage space reservation method is applied to electronic equipment and is characterized by comprising the following steps:
defining a reserved variable for reserving a storage space;
assigning the size of a preset space to the reserved variable;
reserving a storage space with the preset space size in a storage module through the reserved variable so as to enable an operating system and/or an application program to directly use the storage space when the space is insufficient;
the reserving, in a storage module, a storage space of the preset space size by the reserved variable includes: when the storage module is mounted, transmitting the size of the reserved space to a user space file system FUSE in a kernel state through the reserved variable so as to reserve a storage space with the size of the preset space;
after reserving the storage space with the preset space size in the storage module, the method further includes:
detecting the data volume of data to be written when receiving the operation of writing data;
and when the data volume of the data to be written is larger than the available space size of the storage module, outputting prompt information for prompting that the storage space is insufficient, wherein the available space size is the space size obtained by subtracting the preset space size from the total free space size included by the storage module.
2. The method of claim 1, wherein defining a reserved variable for reserving storage space comprises:
the reserved variable is defined in a data structure in a service used to manage storage space.
3. The method of claim 2, wherein assigning a preset space size to the reserved variable comprises:
and when the service is started, transmitting the preset space size to the reserved variable through an option for reserving a storage space.
4. A storage space reservation device applied to electronic equipment is characterized by comprising:
a definition module configured to define a reserved variable for reserving a storage space;
an assignment module configured to assign a preset space size to the reserved variable;
the reservation module is configured to reserve a storage space with the preset space size in the storage module through the reservation variable, so that an operating system and/or an application program can directly use the storage space when the space is insufficient;
the reservation module includes:
a reservation submodule configured to transfer the size of the reserved space to a user space file system FUSE in a kernel state through the reserved variable when the storage module is mounted, so as to reserve the storage space with the size of the preset space
The device further comprises:
the detection module is configured to detect the data volume of the data to be written when receiving the operation of writing the data after reserving the storage space with the preset space size in the storage module;
and the output module is configured to output prompt information for prompting that the storage space is insufficient when the data volume of the data to be written is larger than the available space size of the storage module, wherein the available space size is the space size obtained by subtracting the preset space size from the total free space size included in the storage module.
5. The apparatus of claim 4, wherein the definition module comprises:
a definition submodule configured to define the reserved variable in a data structure in a service for managing storage space.
6. The apparatus of claim 5, wherein the assignment module comprises:
a transfer module configured to transfer the preset space size to the reserved variable through an option for reserving a storage space when the service is started.
7. A storage space reservation apparatus, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
defining a reserved variable for reserving a storage space;
assigning the size of a preset space to the reserved variable;
reserving a storage space with the preset space size in a storage module through the reserved variable so as to enable an operating system and/or an application program to directly use the storage space when the space is insufficient;
the reserving, in a storage module, a storage space of the preset space size by the reserved variable includes: when the storage module is mounted, transmitting the size of the reserved space to a user space file system FUSE in a kernel state through the reserved variable so as to reserve a storage space with the size of the preset space;
the processor is further configured to:
detecting the data volume of data to be written when receiving the operation of writing data;
and when the data volume of the data to be written is larger than the available space size of the storage module, outputting prompt information for prompting that the storage space is insufficient, wherein the available space size is the space size obtained by subtracting the preset space size from the total free space size included by the storage module.
8. A computer-readable storage medium, on which computer program instructions are stored, which program instructions, when executed by a processor, carry out the steps of the method according to any one of claims 1 to 3.
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| CN103383660A (en) * | 2013-04-01 | 2013-11-06 | 华为终端有限公司 | Method and device for realizing functions of cache partition of Android system as well as terminal equipment |
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