CN103559080B - Constrained Execution of Background Application Code on Mobile Devices - Google Patents
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Abstract
The subject disclosure is directed towards a technology by which background application code (e.g., provided by third-party developers) runs on a mobile device in a way that is constrained with respect to resource usage. A resource manager processes a resource reservation request for background code, to determine whether the requested resources meet constraint criteria for that type of background code. If the criteria are met and the resources are available, the resources are reserved, whereby the background code is ensured priority access to its reserved resources. As a result, a properly coded background application that executes within its constraints will not experience glitches or other problems (e.g., unexpected termination) and thereby provide a good user experience.
Description
Technical field
The present invention relates to mobile device application, more particularly to the background application of mobile device.
Background technology
People want mobile device and can once complete many things, such as browse web, play music, notify to them
Particular event etc..It is practically without single application and can completes many possible tasks, so mobile device is configured with
Some discrete applications and (include that be phase with " first party " supplier of mobile device when manufacturer from " third party " application vendor
With the situation of entity) download the ability of more applications.
At present, application dividually (can be with the relative high powers of such as PC etc of parallel running with them in mobile device
Computing device is contrary) on run.Expecting, " in the same time ", operation was applied user to be given more in accordance with need on the mobile apparatus
The experience wanted.For such as moving for given its computing capability, limited screen real estate, battery, the network bandwidth etc.
For the affined equipment of resource of equipment etc, this is problematic.
In the various methods for employing this problem of solution in the past.Such as conventional desktop operating system, some moving operations
The various applications of simple system ground parallel running, it is assumed that the system has enough resources to complete task and the vacation of all activities
Determine user and can manage Consumer's Experience (UX, including user interface or UI) problem.This often leads to poor Consumer's Experience, such as exists
The glitch occurred in the case of resource is insufficient and other problemses.Other platforms allow one or more applications to continue executing with,
Even if user has switched from these applications, but these platforms do not ensure the seriality (quality) with regard to servicing；For example, if
Resource starts to use up, then application is terminated.
The content of the invention
Present invention is provided and will be further described in detailed description below to introduce in simplified form
Some representative concepts.Present invention is not intended to the key feature or essential feature for identifying theme required for protection,
It is not intended in any way that would limit the scope of the claimed subject matter use.
In short, each side of theme as herein described be related to a kind of backstage code be allowed to by which it is constrained with resource
Mode run, give priority using retained resource (for example, under non-abnormal operating conditions) to backstage code
Technology.After the reservation request for receiving request for the device resource of backstage code, explorer determines that the reservation is asked
Whether meet policy criteria, include whether that enough resources (for example, CPU and memorizer) may be used to guarantee that backstage code can
With the priority for using just requested device resource.If it is, retaining device resource is used for backstage code.If
Available without enough resources, then the request fails.In this way, for example, it is ensured that backstage code with enough resource operations with
Avoid glitch, be not abruptly terminated.
Policy criteria generally comprises the constrained of the type for the backstage code corresponding with request is retained.For example,
Background audio player agency is only permitted request and limited amount memory distribution is allocated.Policy criteria typically also includes
Indicate which resource is allowed to and/or is rejected the data that used by backstage code, for example, turning navigation backstage code one by one can
Using GPS mechanism as resource, but screen display may not be used.
On the one hand, when reservation is asked successfully, application example manager starts the example of backstage code for performing.Should
The life cycle of management backstage code is further configured to Instance Manager, active state (in this condition, backstage code is included in
Perform) at least a portion of mobile backstage code and resting state (in this condition, backstage code is not performed) between.
On the one hand, describe to receive service request from application, the request includes being that background proxy retains asking for resource
Ask.Process (for example, corresponding to explorer) determines whether to retain resource for background proxy, and if it is, retains
Resource.Background proxy is called (for example, to be performed at least one background task to be communicated with system service, is wrapped to perform code
Include using it is pent when).When background proxy and the resource being retained no longer is needed, discharge resource and simultaneously abandon retaining.
Detailed description below is read in conjunction with the accompanying, other advantages of the present invention can become apparent.
Description of the drawings
It is unrestricted as an example, the present invention is shown in the drawings, in accompanying drawing identical reference indicate it is identical or
Similar element, in accompanying drawing：
Fig. 1 is represented for managing the example set of resource (include provide to backstage application code one group of affined resource)
The block diagram of part.
Fig. 2 is the block diagram/controlling stream graph for representing exemplary background code life cycle.
Fig. 3 is the expression of the resource boundaries frame for each live load (process group).
Fig. 4 is the expression of example application model framework, and the application model includes being configured to provide holding in a mobile device
The component of capable backstage code.
Fig. 5 is to represent exemplary operations to prepare backstage code to play the block diagram/controlling stream graph of background audio.
Fig. 6 is the flow chart for representing the exemplary step for providing the backstage code for performing in a mobile device.
Fig. 7 is represent the one or more aspects that wherein may be implemented in embodiments described herein exemplary, non-
The block diagram of restricted computing system or operating environment, for example, in the example of mobile telephone equipment.
Specific embodiment
The each side of technique described herein relate generally to a kind of background application code and are configured by which and are allowed to fortune
OK, but in resource use it is subject to the technology of system restriction.This allows third party developer to provide can be used as non-foreground code
Come the code for performing.Exemplary background code scene includes that background audio is played, periodically logins (checking into) social activity
Networking site, the backstage to content are downloaded for using, arranging alarm and notice etc. on foreground after a while.Some of these scenes
(for example, background audio is played, social networking is logined, geo-fence/geography cache etc.) can be by making application code rear
Run to operate in platform.
For this purpose, life cycle and the centralized service for performing for management backstage application code is described, and before protecting
Stage body tests the resource management system performed from background application, while so that background application can still be obtained performs progress.Also
Describe one kind that general warranty can start given experience (for example it is assumed that system is not in abnormality) in itself in future
Mechanism.
Usually, before background application code is allowed to operation, background application code request is the special using retaining of it
Quantitative resource (for example, CPU is used and memorizer) and/or certain types of resource (for example, ancillary equipment).If request exists
In the acceptable policy constraints of the background application code of the type/meet the type background application code acceptable plan
Slightly constrain, and requested resource is available in the time, then retain requested resource (otherwise for background application code
Request failure).If resource be retained, ensure resource under typical equipment operation (i.e. except possible abnormal conditions it
It is available to background application code outward).In this way, backstage resource it can ask and the resource that retains in terms of suffer restraints, but
If being that resource is successfully reserved, when needing, resource will be available.As a result, it is properly encoded with its constraint
The background application of execution will not experience glitch or other problemses (for example, unexpected termination), and thereby provide good
Consumer's Experience.
It should be appreciated that any example herein is nonrestrictive.Therefore, the invention is not restricted to described here any
Specific embodiment, aspect, concept, structure, function or example.Conversely, embodiment described herein, aspect, concept, knot
Any one in structure, function or example be all it is nonrestrictive, and the present invention be generally possible to calculate and mobile device in
There is provided the various modes of benefit and advantage to use.
Fig. 1 is the block diagram for illustrating each component in an example implementation, is included in mobile device (such asElectricity
Words) the middle application model that backstage execution is provided.For this purpose, the request 102 relevant with application task is by control application resource manager
106 (for example, system shell) task list component 104 is managed.
Usually, system resource 108 (illustrating in such as frame 111-116) is distributed to main memory and is existed by explorer 106
Process on equipment.In addition to 112 resource of CPU111 and memorizer, resource may include that the network bandwidth 113, dribbling is wide by 114 and (use
In the I/O of any non-volatile memories type, be not necessarily disk), screen display 115 and ancillary equipment/sensor 116, such as
Equipment microphone, equipment camera, accelerometer, gyroscope, GPS mechanism etc..
The type of process includes system process, foreground process and background proxy process.Work entering with perform function together
Journey is referred to here as " live load " (although it is also feasible that live load may also comprise individual process).For example, Fig. 1 thus
Show system workload 120, foreground load 121 and background proxy live load 122-124.
Ensure to be determined in advance as related to the process type and needed by the process to the live load 124 of each type
Each resource amount, as " bounding box " 118 in Fig. 1 is generally represented.For example, the CPU 111 and memorizer of a certain amount
112 are needed by each background work load (or agent process), and are retained for the live load in initial request, or if
Fail without the available then request of enough resources.The amount (if not failing) of guaranteed each resource can be with corresponding application
Class it is corresponding, for example, background audio agency can be given so many memorizeies and CPU, and different background proxies can quilt
Give different amounts of memorizer and CPU.
Explorer 106 is implemented for control to the access of specific resources (such as camera or microphone) to prevent their quilts
The strategy that for example background proxy is accessed.Used as another example, foreground load 121 obtains background process live load and cannot protect
The screen display resource stayed.The additional detail for describing other resources below and retaining with regard to resource.
Thus, the component of application model described herein includes system process/live load, including application code fragment
(include the Consumer's Experience (UX, including user interface components) applied and also can include for a large amount of industry needed for the UX are presented
Business logic) foreground application/live load.The component of application model may also include background proxy/live load, including execution should
Real work (for example, streaming music, perform geo-location service etc., be included in after foreground application is closed) generation
Chip segment, but typically do not include visual user interface components.Background proxy is relevant with foreground application, but should independently of foreground
With；In one implementation, background proxy in the proxy operation (wherein main frame includes one or more tasks containing application
The process of example).
The function relevant with resource management of task list component 104 is included such as when session (user interface live load)
Be activated or when background proxy main frame is created the live load of instantiation suitable type (one as described here more
Individual process) and the live load is deleted when the main frame in live load terminates.When operating duty is changed into non-from movable
When (and being changed into activity from inactive) of activity, live load is also attached to reservations (correspondingly by task list component 104
In bounding box)/from reservation mask work load.104 monitoring host computer of task list component is created and by each created main frame
It is added to suitable live load, monitoring host computer to terminate and the main frame and monitoring host computer being terminated is removed from its live load
Status Change simultaneously changes the state of its live load for including in case of need.
In one implementation, the component for being related to backstage execution also includes application example manager 126 (AIM), including management
Life cycle of background proxy/live load 122-124 representative client assign them the central service of work.It is related to backstage
The other assemblies of execution include using one or more background proxies (such as entering media to be played performing each work item
Row queue up) background service (such as media services).System UX is provided also, such as playback controls or toast (toast) are notified, it
Allow users to interact (vice versa) in the way of limited with background proxy.
System workload 120 includes various system processs.In one implementation, the such example of only one of which.
System process (such as TelShell.exe 440 and NK.exe 442, Fig. 4 and ServicesD.exe) and other processes belong to
In this live load, but no main frame belongs to this live load.
Certain function that system workload 120 is provided includes the foreground UI that system is provided, such as including screen locking, frame unit
Part (using hurdle, toast etc.), incoming call experience, alarm and prompting etc..The background audio playback that system is provided, including
Media services (554, Fig. 5, for example,Media queue) built-in music playback, do not use any main frame for media solution
Code or playback controls.System workload 120 can also carry out background process, and such as email synchronization, download and installation update
With application etc..
The process that process in system workload 120 is usually represented in other live loads carrys out work.For example, if front
Platform task instances make protected server library (PSL) method call to TelShell.exe, then TelShell.exe will be used
Resource is performing this PSL method.Note, system have measurement server processes in resource using and be attributed to visitor
The ability of family machine (or making requests on) process, and therefore such process resource using being considered as system workload sheet
A part for body.
UI live loads include one group of UI main frame that the visual user for being worked to provide based on UI together is experienced.Worked by UI
The UI pages that load shows form session, i.e. there is man-to-man mapping between UI live loads and session.Enter without system
Journey is included in such live load.
The UI live loads of the UI main frames comprising activity are referred to as the UI live loads of activity, and it is current aobvious in foreground
Show UI UI live loads (for example, foreground load 121).Other UI live loads are considered as inactive.Because
The UI main frames of one time only one of which activity, so the UI live loads of only one of which activity at any given time.Sometimes
Wait, when system workload 120 is providing foreground UI, the UI live loads that may not there is activity (for example, are showing lock
During screen).There may be some inactive UI live loads in the same time, quantity determined by the size of storehouse backward (its by
The frame server component control of TelShell, as described in one or more related applications).
The a kind of of application model realizes that specifying that the main frame being in the UI live loads of activity is successfully completed disables or cancel,
It is contrary with the main frame being comprised in inactive UI live loads.When the UI main frames in UI live loads terminate, the UI works
Make load to terminate.UI main frames generally because its backed off after random for completing in its task instances and terminate, or because in its task reality
Example completed disable after dehydrated (dehydrated) and terminate.
The component for being easy to background work to load scene is also described herein, including the above-mentioned of the resource consumption of managing main frame should
With explorer 106.Backstage UX live loads include working together to provide the background host computer of non-vision Consumer's Experience, such as
Background audio playback or one by one turning guide, playback video flowing to external display are while read Email (example on phone
Such as, using DLNA/ DLNA technologies) etc..Note, no system process needs to be included in such work
In loading.
The backstage UX live loads of the background host computer comprising activity are referred to as the backstage UX live loads of activity.Only comprising non-
The backstage UX live loads of the background host computer of activity are considered as inactive.
The use of the background audio playback of third party's media decoder and/or playback agent is feasible (and at one or many
It is described in individual related application).At any given time, a playlist is at most being played in media services, and it is by one
Individual application is possessed；Via strategy, a media item from playlist can be played a time at most.Equally, it is specific
The background proxy of playlist is hosted in identical background host computer.These constraints (taking together) are implied in such one kind
In realization, may at most there is a movable backstage UX live load a time.They also imply that each backstage UX
Live load all includes a background host computer.
Fig. 2 illustrates the life cycle of backstage UX live loads.As represented by frame 220, after startup agency creates activity
Platform UX live loads, or alternatively have activated inactive backstage UX live loads.The agency's (frame 222) cancelled in main frame makes
Obtain backstage UX live loads and be changed into inactive.When the agency in main frame completes, main frame can be changed into dormancy (frame 224；Dormancy should
It is described in one or more related applications).Main frame quilt in inactive backstage UX live loads is not required
Allow to successfully complete cancellation.
When the background host computer in the UX live loads of backstage terminates, backstage UX live loads terminate.Background host computer is usual
Only after its all of background proxy is completed, when which it is employed just to terminate when model is informed and will be exited.
Another type of background work load is background process live load, and it includes working together to represent using execution
One group of background host computer of some background process；(different from backstage UX live loads, background process live load does not provide any use
Family is experienced, and user is generally unaware of the live load and exists).The example of background process live load is included periodically from rear
Platform to server update customer location, when call screen is closed downloads of media etc..Note, no system process needs to be included
In background process live load.
In one implementation, each background process live load all includes a background host computer.Backstage master comprising activity
The background process live load of machine is referred to as the background process live load of activity；The backstage of inactive background host computer is included only
It is considered as inactive to process live load.
It is multiple using registrable background process, but a kind of realize allowing at time most movable backstage
Reason live load.If multiple background process live loads are scheduled to perform in the same time, serialization their execution
Can be acceptance, or if resource is allowed, be performed in parallel their (for example, less batteries of this consumption).Should not
The main frame in inactive background process live load is asked to successfully complete cancellation；The life cycle of background process live load
It is similar with the lifetimes and status conversion of backstage UX live loads with State Transferring.
A kind of other kinds of live load is opportunistic live load, and it is not required to have and successfully completes its work
Any main frame made.Inactive live load (inactive UI, inactive backstage UX and the work of inactive background process
Load) be opportunism workload type example.
As described herein, a part for policy in resource management is supporting reality only enough resources are known a priori by
This feature is supported when now there is the feature of suitable user experience；If new live load may cause equipment itself or existing
Live load stop normally working, then without the new live load.In other words, only when knowing (in typical situation
Under) just offer is propped up to the particular job load when having enough resources to perform well for the process of particular job load
Hold.A kind of exception of such case is for opportunism live load, i.e. opportunism live load successfully need not run
Finish, and therefore need not guarantee there are enough resources.
For this purpose, in terms of specification resource requirement, " normally working "/" health with regard to live load can be predefined
".For each workload type, the reality well write of the workload type for example, is predefined by analyzing
The amount of each resource needed for example is to provide good Consumer's Experience.Note, determine each money needed for system workload
The amount in source needs to arouse attention, because system workload can represent other live loads to complete work, and therefore system
Process needs to consider to its client computer the amount for providing the resource needed for service and includes needing in their resource by the resource requirement
In asking.
Operationally, if particular job load is just at least obtaining the amount of the resource needed for its workload type, should
Particular job load is considered as health.As an example, it is considered to (for example, via experiment) nearly all UI work in activity
The CPU of the needs at most 75% per 16ms is loaded to work well.Operationally, as long as the UI live loads of current active can
75% CPU is obtained per 16ms, it is regarded as (i.e. in CPU uses) of health.
In the case where the live load of behavioral deficiency needs to compare the more resources desired by its type, such work
Make load to be not qualified as normally working in the constraint of the resource requirement for being distributed.To avoid interference other live loads,
In one implementation, such live load is not allocated more resources to attempt to make them become health.
Fig. 3 illustrates the conceptual view of live load and its bounding box, wherein hatched frame represents idling-resource.Note
Meaning, for the frame for being marked as 330, " from the main frame of a certain inactive live load " is noted from inactive work
The main frame of load is only allowed to survival in the case where resource is the free time.
Can considered to be in bounding box corresponding to each live load for retaining, the size of bounding box is by its live load
Type wants the amount of the resource needed for health to determine；(note, the not of uniform size of the live load in shown frame is representational surely
And/or relevant with size).For example, background audio live load need the memorizer of a certain amount, a certain CPU time etc. so as to
Glitch or other interference that audio frequency is could be noted without user are played smoothly.Conceptually, for can be in live load
Between the resource of each type that divides there may be different bounding boxes.
To decide whether to allow new background work to load, system distributed based on any other Current resource come for this
Scape checks whether the bounding box (for example, each resource) of the live load meets equipment.If it is, system allows the scene；
If it is not, then the scene is not allowed to (retain request failure).Alternatively, the resource requirement of existing scene can be ejected or be repaiied
Just, so that resource becomes available to new scene.Negotiation is also feasible, for example, after it have rejected reservation, retain request
Can be resubmited to require a certain less amount of resource, so that be for example written as can be with the operator scheme of a certain reduction
The background work load of operation can be realized.
In order that live load (except opportunism live load) is operationally kept fit, application resource manager is true
Guarantor's process has the access right of limit priority to the resource of the border inframe of their own.In other words, application resource manager is true
Protect for each bounding box X, the resource request from the process for belonging to X is only when any process for being not belonging to X is ejected from X
And still there is no enough resources and can just fail during the request to meet.Therefore, system workload can for example be used and be protected
The resource (such as memory cache) stayed and/or use more CPU, however system do not possess the reservation and
It is encoded as understanding that the cache may need to be released and it may receive or may not receive extra CPU.
Note there is physical constraint to universal resource management strategy, because the process of system workload is limited to border
Frame and when the bounding box is full, their resource request failure there is uncertain result and/or may be led
Cause equipment becomes unstable.In one implementation, when system process needs more resources, the bounding box of system workload
It is allowed to increase.Such growth may imply that the bounding box of a certain other live loads shrinks in size, and this causes the work
Become unhealthy as load, but this is than allowing system workload (it provides prior function, such as call experience)
Become unhealthy more preferable.Therefore, the resource " guarantee " made to nonsystematic live load has an accident, including for such as when
The bounding box of system workload has become full and has needed abnormal conditions when increasing.
Fig. 4 also illustrates that additional in the framework of the example implementation that application resource manager 106 is integrated into application model
Details.In one implementation, during application resource manager 106 includes the process 440 for reside in system shell (TelShell)
Static library.Application resource manager 106 is operated and is retained for safeguarding, wherein retain
Frame, and including one group of resource quota.Resource quota can be in the form of (resource type, size) tuple, and it is described to protect
Stay and how many resources remained.For example, following to retain comprising two resource quota/tuples, which can be set as：(CPU, 10%
Every five seconds for example), (memorizer, 10MB) }, its every five seconds for example retains the memorizer of CPU and 10 Mbytes of 10%.
When retaining with live load associated there, application resource manager 106 operates to ensure that the work
The process of load has the access right of limit priority to the resource for retaining.Therefore, if the backstage UX live load quilts of activity
The reservation being assigned in above example, then application resource manager guarantee that the main frame in the movable backstage UX live loads can be total to
With the CPU of memorizer and every five seconds for example 10% using 10MB.
Retain comprising one or more resource quotas.Live load includes one or more main frames.When any given
Between, reservation is associated with a live load.Live load can be associated with a reservation a time.Each main frame is in office
How preset time is in a live load；(technically, main frame the same time can in multiple live loads, although this
May not be allowed by model).Main frame different time can different operating load in, although may can not possibly by main frame from compared with
Big bounding box moves to less bounding box, because some resources (such as memorizer) for currently consuming may not be to return
Receive.
As an example of the typical case's interaction between system component described herein, in one example using backstage media
Playback.Note, for the backstage for being related to position tracking, data syn-chronization, voip call, the application code such as turning guide one by one
Other scenes for performing, generally there are same pattern.
As depicted in fig. 5, it is considered to which user starts foreground application 552 to initiate audio experience.Using foreground application
552, user selects the parameter (the music track list that for example, will be played on backstage) of required backstage experience.
Fig. 5 illustrates the fundamental block diagram of the scene for media playback and data/controlling stream graph.Note, as illustrated, application
552 storages 560 with agency 558 with the isolation of themselves, and media services have the data storage 562 of their own, it
May include queue.The step of following institute's labelling the numeral corresponding to zone circle in Fig. 5：
1. application create service request (" play this song and when you need next song callback me ")
2. service request system retains resource for agency's experience
3. system retains resource to guarantee that agency can perform its work in future
4. service commences play out song
5. user closes application
6. current title terminates
7. service request system calling is acted on behalf of to obtain next song
8. system starts new process and calls agency
9. background proxy execution logic next song information is provided
10. system is hung up or destroys the agency
11. current titles terminate ... (being back to step 5)
12. playback are completed
13. service to notifications no longer need retain
14. systems are abandoned retaining.
As can be seen, foreground application 552 (via API Calls) creates background service 554, and to media playback backstage
Service request is submitted in service 554 to, it is desirable to which it represents foreground application and performs audio playback.Media playback background service 554 requires system
556 (explorers 106 of Fig. 1 and 4) of system retain some resources for background proxy 558, so that it can be in time in the future
Point is performed and there is high deterministic success rate (to note, such as the exception of failure of operating system etc itself can prevent this
The execution of sample).It is assumed that it is successful to retain, then media playback background service 554 starts audio playback experience.
When media playback background service 554 determines that it needs the participation of application code and (for example, to continue to provide to experience
The URL of the next song played), work item is submitted to 556 (for example, the application example pipe in Fig. 1 and 4 of system by background service
Reason device is 126).Application example manager 126 attempts to find the suitable proxy for running background proxy 558 wherein.If
There is no such main frame, a new main frame is created using the resource for previously having been retained by explorer 106.Now should
The suitable resource constraint such as the memorizer that can be used with agency and the amount of CPU.
Work item is assigned to background proxy 558, and it performs the logic of the application specific for needed for meeting it, for example, even
It is connected to web services 564 to download track metadata and the data are supplied to media playback background service 554.
Once background proxy 558 has been completed its work item, application example manager 126 freely reclaims its money on demand
Source (for example, is performed or termination completely by hanging up which).However, agency still can keep dormancy in memory, for example, in case
Agency 558 was required again in future.
If background service 554 has more work do, it is returned to obtain the participation of application code, as above institute
State.Otherwise, once having met service request (or user explicitly or implicitly indicates to stop experience), release resource is protected
Stay and the request is considered as completing.
Note, at any time point, user can return to the example of foreground application 552, and further directly or indirectly
Ground is interacted with background service 554 via system event etc. or itself is interacted with background proxy 558.In addition, user can use system
UX (such as general Playback controls), to affect background service (for example, jumping to next song), this can further call background proxy
To complete work item.
Used as general introduction, Fig. 6 is to illustrate retain request flow process about exemplary step for what background work was loaded with processing
Figure, receives request in step 602 and starts.Step 604 represents strategy of the system searching for the background work load of this type
Criterion, for example, which resource is allowed to, and in these resources for the restriction of each resource what is (if there is
Words).For example, background audio agency need a certain (predetermined, rational) memorizer for measuring and a certain amount CPU and can
Other resources of energy, but do not need screen display.Turning guide background proxy needs a certain memorizer and CPU one by one, and right
The access of GPS sensor data, but also without screen display.
Step 606 selects resource, step 608 to assess to determine whether requested resource is allowed to use from reservation tuple
In the live load of this type.If it is not, then process is terminated in step 618 by making request failure.
If permitted to, then whether whether step 610 assessment requested resource amount (if desired) can use and in strategy
In constrained, for example, the CPU of only so many percentage ratios, only so many memorizeies etc..Note, some resources or permitted
Perhaps access or be denied access to, for example, Memory-limited, but gps data is unrestricted (or can not visit because it may have access to
Ask), and therefore step 610 is not suitable for these resources.Note, as whether meeting a part of considering resource of policy criteria
Availability or as the separate condition for needing to meet in addition to policy criteria to consider Resource Availability be usually of equal value.
If the amount asked is in the restriction of any predetermined amount of being allowed for and be currently available, in step
Rapid 612 retain the resource.If requested resource is unavailable or has exceeded the predetermined amount of being allowed for (if there is),
Step 610 is branched off into step 618, and there process is terminated by making request unsuccessfully.
Other resources that step 614 pair retains in tuple repeat the process, for example, assess each resource in order.When for
When retaining request reservation requested resource, ask successfully in step 616.Now, background proxy can be activated；It can quilt afterwards
Refuse to the access beyond those resources for initially retaining, for example, in one implementation, background proxy is not allocated beyond initial
The more memorizeies for retaining (if requested while in operation).
Illustrative Operating Environment
Fig. 7 illustrates the example of the suitable mobile device 700 of each side that can realize theme described herein thereon.
Mobile device 700 is only an example of equipment, it is not intended that use range to each side of theme described herein or
Function proposes any restriction.Mobile device 700 was also not construed as appointing shown in EXEMPLARY MOBILE DEVICE 700
One component or its combination have any dependence or requirement.
With reference to Fig. 7, for realizing that the example devices of each side of subject matter described herein include mobile device 700.
In some embodiments, mobile device 700 include cell phone, allow with the handheld device of the voice communication of other handheld devices,
A certain other voice communication apparatus etc..In these embodiments, mobile device 700 can match somebody with somebody the camera for being ready for use on shooting photo, though
So this may not be required in other embodiments.In other embodiments, mobile device 700 includes personal digital assistant
(PDA) electricity of, handheld gaming devices, notebook, printer, including Set Top Box, media center or other electrical equipment etc.
Device, other mobile devices etc..In other embodiment, mobile device 700 may include generally to be construed to non-moving equipment, such as
Personal computer, server etc..
The component of mobile device 700 can including but not limited to, processing unit 705, system storage 710 and will be including being
System memorizer 710 is coupled to the bus 715 of processing unit 705 in interior various system components.Bus 715 may include several types
Any one of bus structures, including memory bus, storage control, peripheral bus and use various total wire bodies
Local bus of any one in architecture etc..Bus 715 allows to transmit data between the various assemblies of mobile device 700.
Mobile device 700 can include various computer-readable mediums.Computer-readable medium can be set by movement
Standby 700 any usable mediums for accessing, and include volatibility and non-volatile media and removable, irremovable medium.
Unrestricted as an example, computer-readable medium may include computer-readable storage medium and communication media.Computer-readable storage medium
Including for any of storage such as computer-readable instruction, data structure, program module or information as other data
Method or technique is come the volatibility realized and non-volatile, removable and irremovable medium.Computer-readable storage medium include but
It is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other CDs
Storage, cartridge, tape, disk storage or other magnetic storage apparatus or can be used for store information needed and can be by moving
Any other medium that equipment 700 is accessed.
Communication media embodies computer-readable generally with the modulated message signal such as carrier wave or other transmission mechanisms
Instruction, data structure, program module or other data, and including any information-delivery media.Term " modulated message signal "
Refer to the signal that one or more feature is set or changed in the way of coding information in the signal.As an example and
Unrestricted, communication media includes wire medium, and such as cable network or direct line connect, and wireless medium, such as acoustics,
RF, bluetoothWireless USB, infrared, WiFi, WiMAX and other wireless mediums.Above-mentioned combination in any should also be included in calculating
In the range of machine computer-readable recording medium.
System storage 710 includes the computer-readable storage medium of volatibility and/or nonvolatile memory form, and can wrap
Include read only memory (ROM) and random access memory (RAM).On the mobile devices such as cell phone, operating system generation
Code 720 is included in ROM sometimes, although in other embodiments, what this was not required.Similarly, 725 usual position of application program
In RAM, but equally in other embodiments, during application program can be located at ROM or in other computer-readable memories.Heap
730 provide the memorizer for the state being associated with operating system 720 and application program 725.For example, 720 He of operating system
Application program 725 during its operation can be stored in variable and data structure in heap 730.
Mobile device 700 may also include other removable/nonremovable, volatile, nonvolatile memorizeies.As showing
Example, Fig. 7 illustrate flash card 735, hard disk drive 736, and memory stick 737.For example, Miniaturizable hard disk drive 736 with
Adapt to accumulator groove.Mobile device 700 can be deposited with the non-volatile removable of these types via removable memory interface 731
Memory interface, or can be via USB (universal serial bus) (USB), IEEE 7394, one or more cable ports 740, or antenna 765
Connection.In these embodiments, removable memory equipment 735-737 can be via communication module 732 and mobile device interface.
In some embodiments, the memorizer of not all these types can be all included on single mobile device.In other embodiment
In, one or more in the removable memory of these and other types can be included on single mobile device.
In certain embodiments, hard disk drive 736 can be connected in the way of mobile device 700 is more permanently attached to.
For example, hard disk drive 736 may be connected to such as parallel advanced technology annex (PATA), Serial Advanced Technology Attachment (SATA) or
Other may be connected to the interfaces such as the adnexa of bus 715.In such embodiment, remove hard disk drive and can relate to remove mobile setting
Standby 700 shell simultaneously to be removed and be connected to the screw of the supporting structure in mobile device 700 by hard disk drive 736 or other are tight
Firmware.
Above description and the movable memory equipment 735-737 that figure 7 illustrates and its associated Computer Storage are situated between
Matter provides the storage to the computer-readable instruction for mobile device 700, program module, data structure and other data.Example
Such as, removable memory equipment 735-737 can store shot by mobile device 700 image, voice recording, associated person information,
Program, for the data etc. of program.
User can be input into order in mobile device 700 by the input equipment such as keypad 741 and microphone 742 and believe
Breath.In certain embodiments, display 743 can be touch sensitive screen and user can be allowed to be input into order and information thereon.Key
Area 741 and display 743 can be connected to processing unit 705 by being coupled to the user input interface 750 of bus 715, but also may be used
Connected by other interfaces and bus structures, such as communication module 732 and cable port 740.Motion detection 752 can be used to determine to setting
Standby 700 postures made.
For example, user can talk via microphone 742 and via being input on keypad 741 or touch-sensitive display 743
Text message to communicate with other users.Audio unit 755 can provide the signal of telecommunication with drive the speaker 744 and receive and numeral
Change is received from the audio signal of microphone 742.
Mobile device 700 may include to provide signal to drive the video unit 760 of camera 761.Video unit 760 can also connect
The image that obtained by camera 761 of receipts and these images are supplied to including the processing unit 705 on mobile device 700 and/or
Memorizer.The image obtained by camera 761 may include video, one or more images for not forming video or its a certain combination.
Communication module 732 can provide signal to one or more antenna 765 and receive from it signal.One of antenna 765 can
Launch and receive the message for cellular phone network.Another antenna can be launched and receive bluetoothMessage.Another antenna (or altogether
Enjoy antenna) can launch via wireless ethernet network standard and receive internet message.
Further, the location-based information such as such as gps signal is supplied to GPS interface and mechanism 772 by antenna.GPS
Mechanism 772 makes corresponding gps data (such as time and coordinate) can be used to process again.
In certain embodiments, can be launched using single antenna and/or be received for more than a type of network
Message.For example, voice and blocking message can be launched and be received to single antenna.
When operating in networked environment, mobile device 700 may be connected to one or more remote equipments.Remote equipment
May include personal computer, server, router, network PC, cell phone, media-playback device, peer device or other are normal
The network node seen, and generally comprise above with respect to many or whole elements described in mobile device 700.
The each side of subject matter described herein can be together with numerous other universal or special computing system environment or configuration
Operation.Include suitable for the example of the known computing system, environment and/or configuration of each side of theme described herein,
But it is not limited to, personal computer, server computer, hand-held or laptop devices, multicomputer system, based on microprocessor
System, Set Top Box, programmable consumer electronics, network PC, minicomputer, mainframe computer, including said system or
Distributed computing environment of any one in equipment etc..
The each side of theme described herein be able to can be held in computers such as the program modules performed by mobile device
Described in the general context of row instruction.In general, program module includes performing particular task or realizes specific abstract data
The routine of type, program, object, component, data structure etc..The each side of subject matter described herein can also be appointed wherein
It is engaged in being realized by the distributed computing environment performed by the remote processing devices of communication network links.In distributed computing environment
In, program module is may be located at including in the local and remote computer-readable storage medium including memory storage device.
In addition, although frequently use term server herein, it can be appreciated that the term can also be covered client computer, divide
The set of cloth one or more processes on one or more computers, one or more independent storage devices, one or
The set of multiple other equipments, more than the combination of one or more, etc..
Conclusion
Although the present invention is susceptible to various modifications and replacing structure, its some illustrative embodiment is shown in the drawings
And be described in detail above.It is to be appreciated, however, that this is not intended to limit the invention to disclosed concrete form, but phase
Instead, it is intended to all modifications, replacing structure and equivalents that covering falls within the spirit and scope of the present invention.
Claims (9)
1. a kind of method for performing at least one processor at least in part in a computing environment, methods described include：
Receiving (602) asks the reservation of the device resource for backstage code to be asked,
It is determined that (608,610) are described to retain whether request meets policy criteria, include whether that enough resources may be used to guarantee
The backstage code can have the priority using just requested device resource, and
If it is, retain (612) described device resource so that the backstage code is used,
The life cycle of the backstage code is managed, including starts at least one of background proxy corresponding to the backstage code
To enter the active state that the background proxy is performed wherein, and
The movement background proxy between the background proxy is not performed wherein resting state and the active state.
2. the method for claim 1, it is characterised in that determine and described retain whether request meets the policy criteria also
Including at least some of resource, determining those requested resources whether corresponding to the backstage code for retaining request
In the constrained of type, and if it is not, then make the request failure.
3. the method for claim 1, it is characterised in that determine and described retain whether request meets the policy criteria also
Including at least one resource is determined the resource whether be allowed to by the backstage code use.
4. a kind of system in a computing environment, the system include：
Explorer (106), the explorer are configured to
The resource of constraint backstage code is used, including can by compareing resource reservation request (102) assessment strategy criterion and resource
Determined whether to retain requested resource for the backstage code with property, and
If meeting policy criteria and resource being available, the explorer retains resource for the backstage code and indicates institute
State reservation request be it is successful,
The life cycle of the backstage code is managed, including starts at least one of background proxy corresponding to the backstage code
To enter the active state that the background proxy is performed wherein, and
The movement background proxy between the background proxy is not performed wherein resting state and the active state.
5. system as claimed in claim 4, it is characterised in that also including application example manager, the application example management
Device is configured to the example for starting the backstage code when the reservation is asked successfully for performing.
6. system as claimed in claim 4, it is characterised in that the explorer be system code, foreground code and after
Platform code retains resource, and the resource includes CPU, memorizer, the network bandwidth, non-volatile memories bandwidth, screen display, equipment
Microphone, equipment camera, equipment accelerometer, equipment gyroscope, equipment GPS mechanism, or it is CPU, memorizer, the network bandwidth, non-volatile
Property memory bandwidth, screen display, equipment microphone, equipment camera, equipment accelerometer, equipment gyroscope, equipment GPS mechanism it is any
Combination.
7. a kind of method of the constrained execution of the background application code on mobile device, including：
(602) service request is received from application, the request includes the request to be background proxy reservation resource；
It is determined that whether (608,610) will retain resource for the background proxy, and if it is, retain the resource, including
Start at least one of background proxy corresponding to the backstage code to enter the work that the background proxy is performed wherein
Dynamic state；
The background proxy (558) is called to perform code；
It is determined that when (222) no longer need the background proxy and the resource for being retained；And
Discharge the resource (108) and abandon the reservation.
8. method as claimed in claim 7, it is characterised in that the background proxy communicates with performing at least with system service
Individual background task or the background proxy perform code after application is closed, or the background proxy is led to system service
Letter performs both codes to perform at least one background task and the background proxy after application is closed.
9. method as claimed in claim 7, it is characterised in that also including hanging up or terminate the background proxy.
Applications Claiming Priority (10)
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| US201161442753P | 2011-02-14 | 2011-02-14 | |
| US201161442713P | 2011-02-14 | 2011-02-14 | |
| US201161442735P | 2011-02-14 | 2011-02-14 | |
| US201161442701P | 2011-02-14 | 2011-02-14 | |
| US61/442,713 | 2011-02-14 | ||
| US61/442,735 | 2011-02-14 | ||
| US61/442,753 | 2011-02-14 | ||
| US61/442,701 | 2011-02-14 | ||
| US13/162,936 | 2011-06-17 | ||
| US13/162,936 US9060196B2 (en) | 2011-02-14 | 2011-06-17 | Constrained execution of background application code on mobile devices |
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| CN103559080A CN103559080A (en) | 2014-02-05 |
| CN103559080B true CN103559080B (en) | 2017-04-12 |
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| US9678797B2 (en) * | 2014-03-10 | 2017-06-13 | Microsoft Technology Licensing, Llc | Dynamic resource management for multi-process applications |
| CN104268011A (en) * | 2014-09-25 | 2015-01-07 | 北京网秦天下科技有限公司 | Instruction processing method, device and system of mobile device |
| CN109714640B (en) * | 2017-10-26 | 2022-01-21 | 创盛视联数码科技（北京）有限公司 | Method for playing live video |
| CN112363836A (en) * | 2020-11-12 | 2021-02-12 | 四川长虹电器股份有限公司 | Android system camera resource control method |
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| CN101821997A (en) * | 2007-10-11 | 2010-09-01 | 微软公司 | Hierarchical reservation resource scheduling infrastructure |
| CN101673216A (en) * | 2008-09-09 | 2010-03-17 | 联想(北京)有限公司 | Method and device for closing application program |
| CN101859261A (en) * | 2010-06-09 | 2010-10-13 | 中兴通讯股份有限公司 | Control method and control equipment for releasing memory |
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