CN104731600A - Implementation method for Android system service plug-in - Google Patents
Implementation method for Android system service plug-in Download PDFInfo
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Abstract
The invention relates to the technical field of Android system construction on an embedded device, in particular to an implementation method for an Android system service plug-in. According to the implementation process, the method comprises the specific steps that the Android service plug-in is started; process initiation configuration is supported in a configuration file; assembly starting configuration is supported in the AndroidManifest.xml; a plug-in service loading frame is supported in the system core service process; default values and configuration files of services and processes are supported under a product catalogue; a depend rule between the services is defined; a configuration analysis module during system operating is programmed; the plug-in is carried out on related services during system support operating period debugging; the service plug-in is achieved and completed. Based on the optimization of an Android main force released version Android 4.4 in the current market, after the most compact system is started, the internal storage is reduced about 100 M, and 30% improvement is achieved in proportion. The system starting time is shortened by 2 s, and the 10% improvement is achieved.
Description
Technical field
The present invention relates to the technical field of embedded device being built Android system, in particular, there is provided a kind of can easily for different product demand custom-built system service method, can saving hardware resource while elevator system performance.
Background technology
Since Android issues first version, the fragmentation of system and compatibility are the problems that the slip-stick artist of Google endeavours to solve always, experience the replacement of several version, and current version has all had great lifting in compatibility or stability.The product of compatible mobile phone, dull and stereotyped different size, the compatible operations for different sorting device is also embodied in up-to-date version.But thing followed problem is huge service framework makes system seem too too fat to move, occupy valuable hard drive space, dragged slowly the travelling speed of system, consume more battery electric quantity.And these also places of always denouncing of vast Android user just.
If Fig. 1 is the primary service structure figure of Android, top service mainly through service manager (ServiceManager) communication mutually, the realization of bottom communication is then driven based on the Binder of kernel.System service mainly contains two parts composition, the service of part upper layer application, Service Management concentrates in this system core process of system service (SystemServer), and the service that part of functions is relatively independent in addition is then dispersed in other this locality (Native) process.Primary system provides the demand that comprehensive function carrys out compatible different platform, and only SystemServer mono-just starts close to 50 services, but necessity of service not existence in particular hardware platform in fact greatly.
Fig. 2 is each process committed memory scale map after primary Android starts, the system adopted is version is Android-4.4.2, the memory source that after being mainly used in that pure Android platform startup is described, each process consumes, the analysis result of these data is prerequisites that the present invention carries out performance Optimization Work.
Fig. 3 is the process analysis of Android system service plug, and its implementation roughly can be divided into three process analysis procedure analyses.Be respectively the fractional analysis of system service plug-in unit, system plugin service framework starts, system service dispatch flow process.It is below invocation step.
Step S301, the fractional analysis of system service plug-in unit start.This part is the precondition realizing Android service plug.The system service framework of Android is of extensive knowledge and profound scholarship, and the service framework that realize plug-in unit must have deep understanding and analysis to whole system service.
Step S302, system service analysis on Necessity.The primary service of Android is mixed together, and the dependence between service is intricate, first must could realize the plug-in unitization management of system service to the relation of interdependence between deactivation system service.The relation of interdependence of this part just between deactivation system service, isolates the kernel service of system simultaneously.Fig. 4 gives the system service that can participate in plug-in unit integrated analysis result.
Step S303, system service take resource analysis.Except the system process committed memory resource analysis result summed up according to Fig. 2, also need the system resource that in combing SystemServer process, each service takies, thus summarize the contribution margin of each service occupying system resources.
Step S304, system service configurationization realize.This step is key point of the present invention, according to above two steps conclude result be guiding theory, summarize can participate in configurationization system service, process, according to hardware platform feature definitions go out serve correspondence config option.Analytical framework when writing plug-in unit service operation, writes plug-in unit service framework.
Step S305, system service configuration file are write.Analytical framework when this step mainly writes configuration file compiling, during to provide system cloud gray model, card cage reads service configuration.
Step S306, system service configurationization terminate.So far the static state of whole system plug-in unit realizes substantially completing.Developer can carry out the configuration file of define system service according to specific hardware platform.
Step S311, system start.This section describes the workflow of whole plug-in unit service framework during system cloud gray model.
Step S312, configuration file are resolved.The parsing of configuration file mainly comprises the loading of configuration file, the validity checking of configuration file, the customized renewal etc. of configuration file.
Step S313, configuration service dependency analysis.The system service dependent Rule that this part mainly analyzes according to S302 checks the rationality of configuration file, provides compatible measure simultaneously.
Step S314, startup plug-in type service framework.Start the plug-in type startup framework that S304 writes.
Step S315, the service of startup plug-in type.According to the configuration file result that S312 and S313 analyzes, start corresponding plug-in services.
Step S316, system have started.System service card cage starts successfully, waits for client call.
Step S321, client service call beginning.This step describes the basic procedure of client call service under system plugin service framework.
Step S322, local service are acted on behalf of.The service of each plug-in unit has a local agent service corresponding with it, to shield the ins and outs of service plug.
Step S323, plug-in type service inspection.Check whether the service of calling starts in plug-in unit service framework.
Step S324, service rely on and check.Check whether other service that the service of calling relies on normally starts.
Step S325, system service dispatch scope check.Check whether client has the authority calling service relevant interface.
The failure of step S326, service call.
The success of step S326, service call.
Consider that the customization of different client to system requires and specific hardware environment, under the prerequisite of not influential system basic function, the service abstraction of system is become the framework of configurableization, solution integration manufacturer can customize different services according to its demand or add privately owned service, and to arrive the expense of minimizing system, the object of optimizing user experience becomes a direction of technical development.
Summary of the invention
Invention broadly provides a kind of general in the implementation framework of Android system service plug, service architecture huge for Android itself is abstracted into configurable structure.Based on method provided by the invention, when customizing the Android system of different product, system service can be increased and decreased fast by configuration file according to different product demand, make the system operated on different hardware platforms be the system of simplifying most, and reach the object improving system running speed and toggle speed, reduce disk and EMS memory occupation space, extend battery.
Concrete technical scheme of the present invention is as follows:
By an implementation method for Android system service plug, the concrete steps of its implementing procedure are:
Step S501, Android service plug melt the beginning;
Process initiation configurationization is supported in step S502, init.rc.The start-up parameter increasing process in init.rc describes, to support the configuration of process initiation.Specifically need to revise the parsing part about configuration file in init.c.
Support in step S503, AndroidManifest.xml that Activity starts configurationization.In Android, part startup service is message initiated by receiving start, therefore needs to revise the resolution logic about application package in PackageParser, the configuration started with Service supportive or assembly.
Plug-in services loading frame is supported in step S504, SystemServer.Containing a large amount of startup services in SystemServer, in order to support that the service of plug-in unit starts, need additionally to write plug-in unitization service loading frame.Specifically need to revise the main function in SystemServer, add plug-in unit service framework thread, add the loading of service, unloading, renewal, inquiry, scope check logic.
The configuration file of Service supportive, process and default value under step S505, product catalogue.Whether this need of work carries out before compiling, specifically control corresponding service according to the service interpolation macro options of the plugable summed up in Fig. 4 and start.
Step S506, define each service between dependent Rule.System service participate in the prerequisite of plug-in unit be not with dependence service-impacting, so must predefined serve well between dependent Rule, avoiding partial service because rely on to serve does not start and makes a mistake.
Command Line Parsing module when step S507, system for writing and compiling run.Generate when configuration file is compiling, this step achieves configuration file in the parsing of runtime and loading, specifically needs the propertyservice of amendment system to serve, utilizes the existing attribute query system of system to realize the conversion action of configuration file.
Step S508, system support the related service plug-in unit of runtime debugging.Actual in debugging module based on the system being finally supplied to user.In system, typical debugging services is the SamplingProfilerService service started in SystemServer, mainly provides statistical analysis of performance to use.
Step S509, battery correlation module plug-in unit.Some Androids to derive on series products not battery correlation module, so this part of cutting can save the unnecessary system overhead of system.Concrete operation relates to the healthd process started in BatteryService and the init.rc file in forbidding SystemServer.
Step S510, Drm correlation module plug-in unit.The audio and video products of current most domestic do not adopt encrypted copyright, so the related service of this part also can cutting under specific applied environment.Concrete needs are startup process drmserver increase config option in init.rc.
Step S511, phone correlation module plug-in unit.In numerous products of current Android, except mobile phone has radio-frequency communication module, other product such as numerous equipment such as box, flat board, navigating instrument are do not need phone correlation module substantially, so cutting phone module is highly significant concerning these products.Specifically need the TelephonyRegistry in cutting SystemServer, forbid that the PhoneApp under packages/services/ starts, forbid the enable logic about BOOT_COMPLETED in the Mms under packages/apps/Mms/.Any system resource can not be taken in the system of whole telephone system like this after cutting.
Step S512, bluetooth correlation module plug-in unit.Not bluetooth module on some non-mobile devices, so can reduce the unnecessary expense of system for the support of being correlated with of the bluetooth of cutting Android on these products itself.Concrete operation is that the BluetoothManagerService started in for SystemServer process increases config option.
Step S513, status bar related service plug-in unit.Except the related service of the product needed such as mobile phone, flat board status bar, other some derivative series products such as box, navigating instrument etc. do not need status bar service, are therefore necessary that increasing unified option controls this function.Concrete operation is for startSystemUi function in SystemServer and StatusBarManagerService service increase config option, forbids the starting up of SystemUI.apk simultaneously.
Step S514, wallpaper related service plug-in unit.Concrete operation one is the WallpaperManagerService service do not started in SystemServer process, and another one waits for the logic of WallPapaer part in the starting procedure of process WindowManagerService.
Step S515, print plug-in unit.Concrete operation is that the PrintManagerService for starting in SystemServer process increases config option.
Step S516, screen locking related service plug-in unit.Concrete operations are the startups forbidding KeyguardServiceDelegate in PhoneWindowManager.Forbid the startup of Keyguard.apk simultaneously.
Step S517, WAP related service plug-in unit.Along with the fast development of smart mobile phone and network, WAP and WAP browser seems to become history.Concrete operations increase config option for WapPushOverSms receives starting up's message.
Step S518, service plugization realize terminating.
Advantage and good effect
Method provided by the invention can meet the customization demand of different client to android system, and the service of plug-in unit can utilize configuration file to carry out the degree of depth customization of system service easily; While meeting different product demand, also reach simplified system and reduce hardware resource consumption thus improve the object of system performance further.
After optimizing based on Android main force release version Android4.4 in the market, the internal memory after the system of simplifying most starts reduces about 100M, proportionally has the lifting of 30%.System start-up time reduces 2s, also has the lifting of 10%.
Accompanying drawing explanation
Fig. 1 is the primary service structure figure of Android;
Fig. 2 is each process committed memory scale map after primary Android starts;
Fig. 3 Android system service plug process analysis chart;
Fig. 4; Give the analysis result that the system service that can participate in plug-in unit is integrated, namely Android system service plugization can cutting service guide look;
Fig. 5 is the implementation schematic diagram of Android system service plug of the present invention.
Embodiment
As shown in Figure 5, be the implementation method of Android system service plug, the concrete steps of its implementing procedure sum up the result of getting off after being through and having started the combing of analysis one by one of process, system service to the primary system of Android:
Step S501, Android service plug melt the beginning.
Process initiation configurationization is supported in step S502, init.rc.The start-up parameter increasing process in init.rc describes, to support the configuration of process initiation.Specifically need to revise the parsing part about configuration file in init.c.
Support in step S503, AndroidManifest.xml that Activity starts configurationization.In Android, part startup service is message initiated by receiving start, therefore needs to revise the resolution logic about application package in PackageParser, the configuration started with Service supportive or assembly.
Plug-in services loading frame is supported in step S504, SystemServer.Containing a large amount of startup services in SystemServer, in order to support that the service of plug-in unit starts, need additionally to write plug-in unitization service loading frame.Specifically need to revise the main function in SystemServer, add plug-in unit service framework thread, add the loading of service, unloading, renewal, inquiry, scope check logic.
The configuration file of Service supportive, process and default value under step S505, product catalogue.Whether this need of work carries out before compiling, specifically control corresponding service according to the service interpolation macro options of the plugable summed up in Fig. 4 and start.
Step S506, define each service between dependent Rule.System service participate in the prerequisite of plug-in unit be not with dependence service-impacting, so must predefined serve well between dependent Rule, avoiding partial service because rely on to serve does not start and makes a mistake.
Command Line Parsing module when step S507, system for writing and compiling run.Generate when configuration file is compiling, this step achieves configuration file in the parsing of runtime and loading, specifically needs the propertyservice of amendment system to serve, utilizes the existing attribute query system of system to realize the conversion action of configuration file.
Step S508, system support the related service plug-in unit of runtime debugging.Actual in debugging module based on the system being finally supplied to user.In system, typical debugging services is the SamplingProfilerService service started in SystemServer, mainly provides statistical analysis of performance to use.
Step S509, battery correlation module plug-in unit.Some Androids to derive on series products not battery correlation module, so this part of cutting can save the unnecessary system overhead of system.Concrete operation relates to the healthd process started in BatteryService and the init.rc file in forbidding SystemServer.
Step S510, Drm correlation module plug-in unit.The audio and video products of current most domestic do not adopt encrypted copyright, so the related service of this part also can cutting under specific applied environment.Concrete needs are startup process drmserver increase config option in init.rc.
Step S511, phone correlation module plug-in unit.In numerous products of current Android, except mobile phone has radio-frequency communication module, other product such as numerous equipment such as box, flat board, navigating instrument are do not need phone correlation module substantially, so cutting phone module is highly significant concerning these products.Specifically need the TelephonyRegistry in cutting SystemServer, forbid that the PhoneApp under packages/services/ starts, forbid the enable logic about BOOT_COMPLETED in the Mms under packages/apps/Mms/.Any system resource can not be taken in the system of whole telephone system like this after cutting.
Step S512, bluetooth correlation module plug-in unit.Not bluetooth module on some non-mobile devices, so can reduce the unnecessary expense of system for the support of being correlated with of the bluetooth of cutting Android on these products itself.Concrete operation is that the BluetoothManagerService started in for SystemServer process increases config option.
Step S513, status bar related service plug-in unit.Except the related service of the product needed such as mobile phone, flat board status bar, other some derivative series products such as box, navigating instrument etc. do not need status bar service, are therefore necessary that increasing unified option controls this function.Concrete operation is for startSystemUi function in SystemServer and StatusBarManagerService service increase config option, forbids the starting up of SystemUI.apk simultaneously.
Step S514, wallpaper related service plug-in unit.Concrete operation one is the WallpaperManagerService service do not started in SystemServer process, and another one waits for the logic of WallPapaer part in the starting procedure of process WindowManagerService.
Step S515, print plug-in unit.Concrete operation is that the PrintManagerService for starting in SystemServer process increases config option.
Step S516, screen locking related service plug-in unit.Concrete operations are the startups forbidding KeyguardServiceDelegate in PhoneWindowManager.Forbid the startup of Keyguard.apk simultaneously.
Step S517, WAP related service plug-in unit.Along with the fast development of smart mobile phone and network, WAP and WAP browser seems to become history.Concrete operations increase config option for WapPushOverSms receives starting up's message.
Step S518, service plugization realize terminating.
After have passed through the optimization of above step, obtain one satisfy the demands after minimization system, the primary system of Android of ratio is not only little much on volume, runs and gets up also to become more smooth, the more important thing is that the service system of plug-in unit is that OEM vendor brings the customizable function of service.
Claims (12)
1., by an implementation method for Android system service plug, the concrete steps of its implementing procedure are:
Step S501, Android service plug melt the beginning;
Process initiation configurationization is supported in step S502, startup configuration file;
In step S503, AndroidManifest.xml, supporting assembly starts configurationization;
Plug-in services loading frame is supported in step S504, system kernel service process;
The configuration file of Service supportive, process and default value under step S505, products catalogue;
Step S506, define each service between dependent Rule;
Command Line Parsing module when step S507, system for writing and compiling run;
Step S508, system support the related service plug-in unit of runtime debugging;
Step S509, battery correlation module plug-in unit;
Step S510, encrypted multimedia correlation module plug-in unit;
Step S511, phone correlation module plug-in unit;
Step S512, bluetooth correlation module plug-in unit;
Step S513, status bar related service plug-in unit;
Step S514, wallpaper related service plug-in unit;
Step S515, print plug-in unit;
Step S516, screen locking related service plug-in unit;
Step S517, Web page push related service plug-in unit;
Step S518, service plugization realize terminating.
2. according to claim 1 by the implementation method of Android system service plug, it is characterized in that, when described step S507 system for writing and compiling runs, Command Line Parsing module is the attribute query service of amendment system, utilizes the existing attribute query system of system to realize the conversion action of configuration file.
3. according to claim 1ly the implementation method of Android system service plug be it is characterized in that, described step S508 system supports that the related service plug-in unit of runtime debugging is the performance evaluation service started in system core service.
4. according to claim 1ly the implementation method of Android system service plug be it is characterized in that, described step S509 battery correlation module plug-in unit is battery service in forbidding system service and starts the battery finger daemon started in configuration file file.
5. according to claim 1ly the implementation method of Android system service plug be it is characterized in that, described step S510 encrypted multimedia correlation module plug-in unit is for the service of startup process encrypted multimedia increases config option in startup configuration file.
6. step is according to claim 1 by the implementation method of Android system service plug, it is characterized in that, described step S511 phone correlation module plug-in unit is the phone distribution service in cutting system service, forbid that the PhoneApp under packages/services/ starts, forbid the enable logic about BOOT_COMPLETED in the Mms under packages/apps/Mms/.
7. according to claim 1ly the implementation method of Android system service plug be it is characterized in that, described step S512 bluetooth correlation module plug-in unit is that the bluetooth manager service started in for system service process increases config option.
8. according to claim 1 by the implementation method of Android system service plug, it is characterized in that, described step S513 status bar related service plug-in unit is for startSystemUi function in system service and status bar management service increase config option, forbids the starting up of SystemUI.apk simultaneously.
9. according to claim 1 by the implementation method of Android system service plug, it is characterized in that, described step S514 wallpaper related service plug-in unit is the wallpaper management service not in start up system service processes, and waits for the logic of wallpaper part in the starting procedure of processing window management service.
10. according to claim 1ly the implementation method of Android system service plug be it is characterized in that, described step S515 print plug-in unit is that the print management service for starting phone windows manager in system service process increases config option.
11. is according to claim 1 by the implementation method of Android system service plug, it is characterized in that, described step S516 screen locking related service plug-in unit is the startup forbidding unblock process in phone windows manager, forbids the startup of Keyguard.apk simultaneously.
The implementation method of Android system service plug according to claim 1ly is characterized in that by 12., and described step S517 Web page push related service plug-in unit is that Web page push service reception starting up message increases config option.
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Application publication date: 20150624 |