CN107766145A - EMS memory management process and device under dual system - Google Patents
EMS memory management process and device under dual system Download PDFInfo
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- CN107766145A CN107766145A CN201610688737.6A CN201610688737A CN107766145A CN 107766145 A CN107766145 A CN 107766145A CN 201610688737 A CN201610688737 A CN 201610688737A CN 107766145 A CN107766145 A CN 107766145A
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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
Abstract
The present invention provides the EMS memory management process and device under a kind of dual system, and this method includes：Receive the operating system switching command of user's input；According to operating system switching command, it is determined that operating in first operating system on foreground and operating in second operating system on backstage；The first maximum committed memory is set for the first operating system, the second maximum committed memory is set for the second operating system；Wherein, the first maximum committed memory is more than the second maximum committed memory.EMS memory management process under dual system provided by the invention, the maximum committed memory of control operation system changes because operating in the difference on foreground and backstage, the operating system for avoiding running background takes excessive internal memory, so as to increase memory usage, the running software fluency for the operating system for operating in foreground is improved, improves memory management effect.
Description
Technical field
The present invention relates to the EMS memory management process under computer realm, more particularly to a kind of dual system and device.
Background technology
With the development of computer technology, research staff develops more and more can be in the intelligence such as mobile phone, computer eventually
The software run on end, facility is provided with the daily life for user and work.But due to the internal memory of intelligent terminal,
The resource-constraineds such as central processing unit (Central Processing Unit, abbreviation CPU), internal memory, run in intelligent terminal soft
Part is more, then may cause the fluency of running software to reduce.
To ensure the fluency of running software, memory management module is typically provided with intelligent terminal, to make full use of
Physical memory.The process that memory management module will be run in system, is divided according to significance level.And in memory source anxiety,
The relatively low process of significance level is killed to reach the purpose of releasing memory automatically according to the significance level of process.
Existing EMS memory management process is applied to the common smart machine for being equipped with single operating system, but more and more
Smart machine start to be equipped with dual system, when each setting memory management module for two systems, two memory management moulds
Block is operated according to respective maximum committed memory respectively, and therefore, the operating system for operating in backstage has memory source quilt
The situation of waste, so as to cause to operate in the operation fluency of various softwares in the operating system on foreground to reduce.Therefore, it is existing
EMS memory management process is not suitable for being equipped with the smart machine of dual system, and management effect is poor.
The content of the invention
The present invention provides the EMS memory management process and device under a kind of dual system, to solve existing EMS memory management process
The smart machine of dual system it is not suitable for being equipped with, the problem of management effect is poor.
The present invention provides the EMS memory management process under a kind of dual system, including：
Receive the operating system switching command of user's input；
According to the operating system switching command, it is determined that operating in first operating system on foreground and operating in the of backstage
Two operating systems；
The first maximum committed memory is set for first operating system, the second maximum is set for second operating system
Committed memory；
Wherein, the described first maximum committed memory is more than the described second maximum committed memory.
EMS memory management process under dual system as described above, it is described to set the first maximum to account for for first operating system
With internal memory, the second maximum committed memory is set for second operating system, including：
According to the total internal memory for the equipment for carrying the dual system, set for first operating system in the first maximum occupancy
Deposit, the second maximum committed memory is set for second operating system.
EMS memory management process under dual system as described above, the first maximum occupancy is being set for first operating system
Internal memory, after setting the second maximum committed memory for second operating system, methods described also includes：
Memory threshold is set for each process of first operating system according to the described first maximum committed memory；
Memory threshold is set for each process of second operating system according to the described second maximum committed memory.
EMS memory management process under dual system as described above, the operating system switching command include exiting front stage operation
The operating system for exiting mark and entering front stage operation of operating system enter inlet identity, wherein, it is described according to the operation
System switching command, it is determined that operate in first operating system on foreground and operate in second operating system on backstage, including：
By it is described enter inlet identity indicated by operating system, as first operating system, mark institute is exited by described
The operating system of instruction, as second operating system.
The memory management device under a kind of dual system provided in an embodiment of the present invention is described below, the apparatus and method are one by one
It is corresponding, to realize the EMS memory management process under the dual system in above-described embodiment, there is identical technical characteristic and technology to imitate
Fruit, the present invention repeat no more to this.
The present invention provides the memory management device under a kind of dual system, including：
Receiving module, for receiving the operating system switching command of user's input；
Running status determining module, for according to the operating system switching command, it is determined that operating in first behaviour on foreground
Make system and operate in second operating system on backstage；
Maximum committed memory setup module, for setting the first maximum committed memory for first operating system, for institute
State the second operating system and the second maximum committed memory is set；
Wherein, the described first maximum committed memory is more than the described second maximum committed memory.
Memory management device under dual system as described above, the maximum committed memory setup module are specifically used for, root
According to the total internal memory for the equipment for carrying the dual system, the first maximum committed memory is set for first operating system, is described
Second operating system sets the second maximum committed memory.
Memory management device under dual system as described above, described device also include proceeding internal memory threshold setting module,
The proceeding internal memory threshold setting module is used for,
Memory threshold is set for each process of first operating system according to the described first maximum committed memory；
Memory threshold is set for each process of second operating system according to the described second maximum committed memory.
Memory management device under dual system as described above, the operating system switching command include exiting front stage operation
The operating system for exiting mark and entering front stage operation of operating system enter inlet identity, the running status determining module tool
Body is used for, by it is described enter inlet identity indicated by operating system, as first operating system, to exit mark signified by described
The operating system shown, as second operating system.
EMS memory management process and device under dual system provided by the invention, by receiving the operation system of user's input
Unite after switching command, it is different most for the second operating system distribution for operating in first operating system on foreground with operating in backstage
Big committed memory so that the maximum committed memory of operating system changes because operating in the difference on foreground and backstage, avoids
The operating system of running background takes excessive internal memory, so as to increase memory usage, improves the operation for operating in foreground
The running software fluency of system, improves memory management effect.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, for ability
For the those of ordinary skill of domain, without having to pay creative labor, it can also be obtained according to these accompanying drawings other
Accompanying drawing.
Fig. 1 is the schematic flow sheet of the EMS memory management process embodiment one under dual system provided by the invention；
Fig. 2 is the schematic flow sheet of the EMS memory management process embodiment two under dual system provided by the invention；
Fig. 3 is the application scenarios schematic diagram of the EMS memory management process under dual system provided by the invention；
Fig. 4 is the structural representation of the memory management device embodiment one under dual system provided by the invention；
Fig. 5 is the structural representation of the memory management device embodiment two under dual system provided by the invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
With the popularization of the smart machine of dual operating systems, the software carried in the smart machine of dual operating systems is also more next
It is more, when the software of operation is more, that the non-of each software is matched somebody with somebody be present.Now, it is the EMS memory management process of single operating system is straight
Scoop out and use in dual operating systems, the problem of internal memory waste be present.The present invention provides a kind of EMS memory management process, on solving
State problem.
The smart machine of dual operating systems is equipped with, three systems can be divided into according to the relation used with user, including
All the time backstage is operated in, the root system system of infrastructure service is only provided, user is used, the foreground system interacted be present with user,
And user is not used, in the background system of running background.Root system system provides infrastructure service, it is ensured that the basic function of smart machine
Normally, its EMS memory occupation is relatively stable, therefore need not carry out memory management.And work system uses with living system in user
When, the software difference of operation is opened, then can cause the difference of EMS memory occupation, therefore is both needed to carry out memory management.
Exemplary, smart machine can be mobile phone, and two Android operation systems are equipped with mobile phone, and user is used
The operating system interacted is foregrounding system, and another operating system is background operating system, and can run need not
The software that user often interacts.User can realize the switching of two operating system by the closing key or system software on mobile phone,
Change the operating system for operating in foreground.The present invention is hereafter by taking mobile phone and Android operation system as an example, people in the art
Member is it should be understood that this is not limitation of the invention.
The EMS memory management process under dual system provided by the invention is described in detail using specific embodiment below.
One aspect of the present invention provides the EMS memory management process under a kind of dual system.Fig. 1 is under dual system provided by the invention
EMS memory management process embodiment one schematic flow sheet, the executive agent of this method is memory management device, and the device can be with
Realized, can be integrated in existing smart machine by way of software or hardware.The present invention is not limited this.Such as Fig. 1
Shown, this method includes：
S101, the operating system switching command for receiving user's input；
S102, according to operating system switching command, it is determined that operate in foreground the first operating system and operate in backstage
Second operating system；
S103, it is that the first operating system sets the first maximum committed memory, sets the second maximum to account for for the second operating system
Use internal memory；
Wherein, the first maximum committed memory is more than the second maximum committed memory.
Specifically, in S101, memory management device receives the operating system switching command of user's input, exemplary,
User can realize the switching of operating system by from current foregrounding system, logging in activation background operating system；
Order line statement can be inputted by being united in root system, set foregrounding system and background operating system；Can also be according to intelligence
Button reserved in equipment etc., realizes one key switching.The foregrounding system that can include respectively specifying that in switching command is with after
Platform operating system, it can also be used to specify handover operation, memory management device is incited somebody to action according to when receiving operating system switching command
Existing foregrounding system switches over background operating system.
It should be noted that the first operating system for operating in foreground in above-mentioned steps S102 namely foreground above
Operating system, operate in second operating system namely background operating system on backstage.
Specifically, in S102, when receiving the operating system switching command of user's input, cut according to the operating system
The implementing result of instruction is changed, it is determined that the operating system for operating in foreground after switching, is designated as the first operating system, it is determined that operating in
The operating system on backstage, it is designated as the second operating system.
Specifically, in S103, after the first operating system and the second operating system is determined, it is contemplated that after operating in
The second operating system and user be not present and interact, operation fluency of the user to software therein is insensitive, it is controllable its
Run in less total internal memory, and operate in first operating system on foreground, interacted because user exists with it, to operating in it
The operation fluency of software in first operating system is extremely sensitive, therefore, need binding operation system operate in foreground or
Distribution maximum accounts for big internal memory respectively on backstage, larger maximum committed memory is distributed to operate in the operating system on foreground, so as to keep away
The waste of the operating system to internal memory on backstage is exempted to operate in, has increased memory usage, improve running software fluency.
EMS memory management process under dual system provided by the invention, by switching in the operating system for receiving user's input
After instruction, taken for different maximum of the second operating system distribution for operating in first operating system on foreground with operating in backstage
Internal memory so that the maximum committed memory of operating system changes because operating in the difference on foreground and backstage, avoids backstage
The operating system of operation takes excessive internal memory, so as to increase memory usage, improves the operating system that operates in foreground
Running software fluency, improve memory management effect.
Further, on the basis of embodiment illustrated in fig. 1, the process for setting maximum committed memory is carried out specifically
It is bright.For the first operating system, the first maximum committed memory is being set, when for the second operating system, the second maximum committed memory is set,
Specifically include：
According to the total internal memory for the equipment for carrying dual system, the first maximum committed memory is set for the first operating system, for the
Two operating systems set the second maximum committed memory.
Exemplary, the first operating system and the second operating system are installed on smart machine, two operating system energy
The total internal memory for adding and the equipment being not to be exceeded for the maximum committed memory enough transferred, further, it is contemplated that user is to operating in
The operation fluency of software on background operating system is insensitive, and to operating in the operation stream of the software in foregrounding system
Freely spend extremely sensitive, therefore the first maximum committed memory is set greater than the second maximum committed memory.
Optionally, when distributing maximum committed memory for the first operating system, it is also contemplated that the installation of the first operating system
Software sum, and the quantity for the software being currently running.If the software sum installed in the first operating system is less, user is just
During normal use, the software of unlatching is less, then can suitably reduce the first maximum committed memory.
Exemplary, when specifically setting maximum committed memory, the control group (control in root system kernel can be passed through
Groups, abbreviation Cgroups) maximum memory that comes the operating system of dynamic configuration first and the second operating system takes.Cgroups
Be can limit, record, the mechanism of internal memory used in isolated process group.When the process run in operating system attempts what is taken
Internal memory has exceeded the limitation of maximum committed memory, can trigger low memory (out of memory, abbreviation oom), cause process quilt
Kill, to avoid internal memory from excessively taking.
Further, on the basis of above-described embodiment, the detailed process for setting maximum committed memory is carried out specifically
It is bright.
In view of in operating system, running multiple processes, different processes are different from the level of interaction of user, some processes
Interacted with user, some processes but operate in the backstage of current operation system although not interacted with user, for
Family provides critical services, also has the complete task of process executed no longer active.After maximum committed memory is distributed for operating system, also
It need to be the internal memory that each course allocation can take.
According to the running situation of each process in operating system, and each process and the level of interaction of user, process can be drawn
It is divided into foreground process, it is seen that process, desktop process, secondary service, background process, content provider, null process.
Wherein, foreground process is most important process in operating system, is the process interacted with user.
It can be seen that process refers to that subprogram interface can be seen by a user, but not on foreground and user mutual.
Desktop process is used to be presented total program management of the file and icon in desktop in front of the user.
Secondary service refer to one comprising have been turned on service process be exactly service processes, service no user interface, not with
User's direct interaction, but can be in backstage longtime running, there is provided user's critical function of concern.
Background process refers to not comprising any service having been started up, and does not have the visible interactive window of user.
Content provider is used to realize the shared of data among varying processes.
Null process is not include any process for enlivening component, therefore can be removed first in Installed System Memory anxiety.
According to above-mentioned classification, Fig. 2 is that the flow of the EMS memory management process embodiment two under dual system provided by the invention is shown
It is intended to.As shown in Fig. 2 setting the first maximum committed memory for the first operating system, the second maximum is set for the second operating system
After committed memory, in addition to：
S201, each process setting memory threshold according to the first maximum committed memory for the first operating system；
S202, each process setting memory threshold according to the second maximum committed memory for the second operating system.
It is exemplary, it is determined that after the maximum committed memory of the first operating system (or second operating system), for this first
The foreground process of operating system (or second operating system), it is seen that process, desktop process, secondary service, background process, content carry
Donor and null process difference storage allocation threshold values, and according to vertical order, the memory threshold being assigned to is more and more lower.When
When process is intended to occupy over the internal memory of memory threshold, it will cause process to be killed.When memory source is less, according to by rear
Order forward, reduce EMS memory occupation.For example, first kill null process, kill internal memory provider process again.
When implementing memory threshold distribution, the oom parameters of each operating system can be set by memory management device
Put.
Optionally, memory threshold can be 0.
Optionally, on the basis of any of the above-described embodiment, operating system switching command includes exiting the behaviour of front stage operation
That makees the operating system for exiting mark and entering front stage operation of system enters inlet identity.When user is performed a certain operating system
Exit foregrounding system, and after another operating system is logged in as foregrounding system, obtain operating system switching command.
After operating system switching command is obtained, according to operating system switching command, it is determined that operate in foreground the first operating system and
Second operating system on backstage is operated in, is specifically included：
The operating system indicated by inlet identity will be entered, as the first operating system, will move out the indicated operation system of mark
System, as the second operating system.
Optionally, the operating system of three and the above, memory management provided by the invention can be also equipped with smart machine
Method is applied to the memory management of multiple operating systems.
Optionally, on the basis of any of the above-described embodiment, Fig. 3 is the memory management side under dual system provided by the invention
The application scenarios schematic diagram of method.As shown in figure 3, the first operating system 10 and the second operating system 20 are equipped with smart machine,
Memory management device 30 is provided with the root system system of smart machine, is provided with the first operating system and monitors service unit 11, the
It is provided with two operating systems 20 and monitors service unit 22.In the specific implementation, the monitoring in the first operating system 10 services dress
Put 11 and the second monitoring service unit 22 in operating system 20, for listen to operating system by foreground be switched to backstage or
After being switched to foreground from the background, the oom of operating system is modified according to the instruction of memory management device 30.
Memory management device under a kind of dual system that another aspect of the present invention also provides, the device can be by softwares/hard
Part realizes that the present invention is not limited this.The apparatus and method embodiment corresponds, double in above-described embodiment to realize
EMS memory management process under system, has identical technical characteristic and technique effect, and the embodiment of the present invention repeats no more to this.
Fig. 4 is the structural representation of the memory management device embodiment one under dual system provided by the invention.Such as Fig. 4 institutes
Show, the device includes：
Receiving module 401, for receiving the operating system switching command of user's input；
Running status determining module 402, for according to operating system switching command, it is determined that operating in first operation on foreground
System and the second operating system for operating in backstage；
Maximum committed memory setup module 403, it is second for setting the first maximum committed memory for the first operating system
Operating system sets the second maximum committed memory.
Optionally, on the basis of embodiment illustrated in fig. 4, maximum committed memory setup module 403 is specifically used for, according to taking
Total internal memory of the equipment of dual system is carried, the first maximum committed memory is set for the first operating system, set for the second operating system
Second maximum committed memory；
Wherein, the first maximum committed memory is more than the second maximum committed memory.
Optionally, on the basis of above-described embodiment, the process of each operating system includes foreground process, it is seen that process, table
Face process, secondary service, background process, content provider, null process.
On the basis of Fig. 4 embodiments, Fig. 5 is the memory management device embodiment two under dual system provided by the invention
Structural representation.As shown in figure 5, the device also includes, proceeding internal memory threshold setting module 404, proceeding internal memory threshold value sets mould
Block 404 is specifically used for：
Memory threshold is set for each process of the first operating system according to the first maximum committed memory；
Memory threshold is set for each process of the second operating system according to the second maximum committed memory.
Optionally, on the basis of above-described embodiment, operating system switching command includes exiting the operation system of front stage operation
The operating system for exiting mark and entering front stage operation of system enters inlet identity, and running status determining module 402 is specifically used for, will
Enter the operating system indicated by inlet identity, as the first operating system, the indicated operating system of mark is will move out, as second
Operating system.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (8)
- A kind of 1. EMS memory management process under dual system, it is characterised in that including：Receive the operating system switching command of user's input；According to the operating system switching command, it is determined that operating in first operating system on foreground and operating in second behaviour on backstage Make system；The first maximum committed memory is set for first operating system, the second maximum occupancy is set for second operating system Internal memory；Wherein, the described first maximum committed memory is more than the described second maximum committed memory.
- 2. according to the method for claim 1, it is characterised in that described to set the first maximum to account for for first operating system With internal memory, the second maximum committed memory is set for second operating system, including：According to the total internal memory for the equipment for carrying the dual system, the first maximum committed memory is set for first operating system, For second operating system, the second maximum committed memory is set.
- 3. method according to claim 1 or 2, it is characterised in that the first maximum is being set for first operating system Committed memory, after setting the second maximum committed memory for second operating system, methods described also includes：Memory threshold is set for each process of first operating system according to the described first maximum committed memory；Memory threshold is set for each process of second operating system according to the described second maximum committed memory.
- 4. method according to claim 1 or 2, it is characterised in that the operating system switching command includes exiting foreground The operating system for exiting mark and entering front stage operation of the operating system of operation enters inlet identity, wherein, described in the basis Operating system switching command, it is determined that operate in first operating system on foreground and operate in second operating system on backstage, including：By it is described enter inlet identity indicated by operating system, as first operating system, exited described indicated by mark Operating system, as second operating system.
- A kind of 5. memory management device under dual system, it is characterised in that including：Receiving module, for receiving the operating system switching command of user's input；Running status determining module, for according to the operating system switching command, it is determined that operating in the first operation system on foreground Unite and operate in second operating system on backstage；Maximum committed memory setup module, for setting the first maximum committed memory for first operating system, for described the Two operating systems set the second maximum committed memory；Wherein, the described first maximum committed memory is more than the described second maximum committed memory.
- 6. device according to claim 5, it is characterised in that the maximum committed memory setup module is specifically used for, root According to the total internal memory for the equipment for carrying the dual system, the first maximum committed memory is set for first operating system, is described Second operating system sets the second maximum committed memory.
- 7. the device according to claim 5 or 6, it is characterised in that described device also includes proceeding internal memory threshold value and sets mould Block, the proceeding internal memory threshold setting module are used for,Memory threshold is set for each process of first operating system according to the described first maximum committed memory；Memory threshold is set for each process of second operating system according to the described second maximum committed memory.
- 8. the device according to claim 5 or 6, it is characterised in that the operating system switching command includes exiting foreground The operating system for exiting mark and entering front stage operation of the operating system of operation enters inlet identity, and the running status determines mould Block is specifically used for, by it is described enter inlet identity indicated by operating system, as first operating system, mark is exited by described Indicated operating system, as second operating system.
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