CN105511963A - Memory optimization method and system based on Android system - Google Patents
Memory optimization method and system based on Android system Download PDFInfo
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- CN105511963A CN105511963A CN201510855329.0A CN201510855329A CN105511963A CN 105511963 A CN105511963 A CN 105511963A CN 201510855329 A CN201510855329 A CN 201510855329A CN 105511963 A CN105511963 A CN 105511963A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
- G06F9/5016—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals the resource being the memory
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0253—Garbage collection, i.e. reclamation of unreferenced memory
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2209/00—Indexing scheme relating to G06F9/00
- G06F2209/50—Indexing scheme relating to G06F9/50
- G06F2209/508—Monitor
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Abstract
The invention discloses a memory optimization method and system based on an Android system. The memory optimization method comprises that after the Android system is turned on, a memory monitoring program monitors the memory value occupied by each process of the Android system; a target program name which is input by a user and needs to be monitored is obtained, the memory value occupied by the target program is queried, whether the memory value occupied by the target program is larger than a memory threshold value set by the user or not is judged; if the memory value occupied by the target program is larger than the memory threshold value set by the user, the memory occupied by the target program is released. According to the invention, the memory usage condition can be monitored actively in real time, waste memory can be recovered timely, one or more assigned programs can be recovered, user preset threshold values can be provided, and the user can manage the memory usage of his device conveniently.
Description
Technical field
The present invention relates to Android applicating developing technology field, particularly relate to a kind of Memory Optimize Method based on android system and system.
Background technology
The program of Android is all write by Java language, so the memory management of Android and the memory management of Java similar, the release of internal memory has been come by Garbage Collector, and Garbage Collector is not reclaim in real time, and can not reclaim for single or designated program.And the another set of memory management of Android is the method taking process of killing completely, this just makes useless junk data in occupation of internal memory, and is forced to useful process to terminate, and internal memory is not reasonably and effectively used.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of the deficiencies in the prior art, the object of the invention is to provide a kind of Memory Optimize Method based on android system and system, be intended to there is useless junk data in occupation of internal memory in the program of android system in solution prior art, and be forced to useful process to terminate, internal memory is not reasonably and effectively used defect.
Technical scheme of the present invention is as follows:
Based on a Memory Optimize Method for android system, wherein, method comprises:
After the start of A, android system, the memory value that each process of internal memory monitoring facilities monitoring android system takies;
B, the needs obtaining user's input carry out the target program title monitored, the memory value that query aim program takies, and judge whether memory value that target program takies is greater than the internal memory threshold values of user's setting;
If the memory value that C target program takies is greater than the internal memory threshold values that user is arranged, the internal memory that release target program takies.
The described Memory Optimize Method based on android system, wherein, also comprises before described steps A:
S, in advance the internal memory monitoring facilities of memory value of each process in monitoring android system is registered as starting up, and internal memory monitoring facilities is set to System Privileges program.
The described Memory Optimize Method based on android system, wherein, described step B specifically comprises:
B1, to be established a communications link by binder and internal memory monitoring facilities, receive the target program title of the needs monitoring of user's input;
B2, internal memory monitoring facilities parse program process number corresponding to target program title, according to the program process number memory value that the target program that inquiry is corresponding takies;
B3, judge the internal memory threshold values whether memory value that target program takies exceedes user and arrange.
The described Memory Optimize Method based on android system, wherein, described step C specifically comprises:
If the memory value that C1 target program takies is greater than the internal memory threshold values that user is arranged, android system receives the rev down process rev instruction of user, sends internal memory release target program signal to internal memory monitoring facilities;
Internal memory operation is reclaimed in C2, execution, the internal memory that release target program takies.
The described Memory Optimize Method based on android system, wherein, also comprises after described step C:
After D, android system perform a memory discharge operation, after dormancy one schedule time, continue the memory value of each process of monitoring android system.
Based on a memory optimizing system for android system, wherein, system comprises:
Monitoring modular, after android system start, the memory value that each process of internal memory monitoring facilities monitoring android system takies;
Inquiry and judge module, carry out the target program title monitored, the memory value that query aim program takies for the needs obtaining user's input, judges whether memory value that target program takies is greater than the internal memory threshold values of user's setting;
Internal memory release module, if the memory value taken for target program is greater than the internal memory threshold values that user is arranged, the internal memory that release target program takies.
The described memory optimizing system based on android system, wherein, described system also comprises:
Pre-setting module, in advance the internal memory monitoring facilities of the memory value of process each in detecting/monitoring android system being registered as starting up, and internal memory monitoring facilities being set to System Privileges program.
The described memory optimizing system based on android system, wherein, described inquiry and judge module specifically comprise:
Target program title acquiring unit, for being established a communications link by binder and internal memory monitoring facilities, receives the target program title of the needs monitoring of user's input;
Resolve and query unit, parse program process number corresponding to target program title for internal memory monitoring facilities, according to the program process number memory value that the target program that inquiry is corresponding takies;
Judging unit, for judging whether the memory value that target program takies exceedes the internal memory threshold values pre-set.
The described memory optimizing system based on android system, wherein, described internal memory release module specifically comprises:
Internal memory release signal transmitting element, if the memory value taken for target program is greater than the internal memory threshold values that user is arranged, android system receives the rev down process rev instruction of user, sends internal memory release target program signal to internal memory monitoring facilities;
Instruction execution unit, for performing recovery internal memory operation, the internal memory that release target program takies.
The described memory optimizing system based on android system, wherein, described system also comprises:
Sleep block, after performing a memory discharge operation, after dormancy one schedule time, continues the memory value of each process of monitoring android system for android system.
Beneficial effect: the invention provides a kind of Memory Optimize Method based on android system and system, can initiatively also monitor the service condition of internal memory in real time and accomplish that rubbish internal memory reclaims in time, also can realize specifying single or multiple program to implement simultaneously, and user preset threshold values is provided, the internal memory that can manage oneself equipment for user uses and provides conveniently.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the preferred embodiment of a kind of Memory Optimize Method based on android system of the present invention.
Fig. 2 is the process flow diagram of the embody rule embodiment of a kind of Memory Optimize Method based on android system of the present invention.
Fig. 3 is the functional schematic block diagram of the preferred embodiment of a kind of memory optimizing system based on android system of the present invention.
Embodiment
For making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Be applicable to the equipment adopting android system in the present invention, be introduced with Android virtual machine instance in the embodiment of the present invention particularly.Android virtual machine can hold (on computer) installation and operation to simulate android system at PC, and can carry out in computer end operation that almost any Android phone can be carried out, even can also connect computer as Android phone, by mobile phone, assistant monitors, and can simulate the Android system of all official versions.
The invention provides a kind of process flow diagram of preferred embodiment of the Memory Optimize Method based on android system, as shown in Figure 1, described method comprises:
After the start of step S100, android system, the memory value that each process of internal memory monitoring facilities monitoring android system takies.
During concrete enforcement, after monitoring the start of monitoring Android virtual machine, internal memory monitoring facilities is utilized to monitor the internal memory storehouse service condition of each process in Android virtual machine.In init.rc file, specifically register this program internal memory monitoring facilities CauseGC, the memory value that each process of monitoring Android virtual machine takies.
Step S200, the needs obtaining user's input carry out the target program title monitored, the memory value that query aim program takies, and judge whether memory value that target program takies is greater than the internal memory threshold values of user's setting.
During concrete enforcement, user to set up with internal memory monitoring facilities by a kind of communication mechanism and communicates, thus makes target program can obtain the target program title of user's input and the internal memory threshold values shared by target program of user's input.The target program title of user's input can be one also can be multiple.When there being multiple program need monitoring and optimize, multiple parameter can being transmitted simultaneously, when printenv imports into, giving tacit consent to and default value optimization is carried out to all programs.The memory value that query aim program takies, and the internal memory threshold values that the memory value taken by target program and user are arranged compares, judges the internal memory threshold values whether memory value that target program takies is greater than user and arranges.
If the memory value that step S300 target program takies is greater than the internal memory threshold values that user is arranged, the internal memory that release target program takies.
During concrete enforcement, if the memory value that target program takies is greater than the internal memory threshold values that user is arranged, perform Memory recycle operation, the internal memory that release target program takies, and redistribute use.
Further, also comprise before described step S100:
Step S1, in advance the internal memory monitoring facilities of memory value of each process in monitoring android system is registered as starting up, and internal memory monitoring facilities is set to System Privileges program.
During concrete enforcement, registers memory monitoring facilities CauseGC starting up in starting up's item init.rc file in advance, and be set to System Privileges program, thus monitor the internal memory service condition of all processes.
Further in embodiment, also comprise after described step S300:
After step S400, android system perform a memory discharge operation, after dormancy one schedule time, continue the memory value of each process of monitoring android system.
During concrete enforcement, memory discharge operation also needs time and resource, and therefore, GC operation can not be too frequent, otherwise can take more cpu resource, the speed that the system that slows down performs.Therefore after executing a Memory recycle, after the dormancy several seconds, then the service condition of circularly monitoring internal memory is gone.Concrete can dormancy 3-5s.
In further embodiment, wherein step S200 specifically comprises:
Step S201, to be established a communications link by binder and internal memory monitoring facilities, receive the target program title of the needs monitoring of user's input;
Step S202, internal memory monitoring facilities parse program process number corresponding to target program title, according to the program process number memory value that the target program that inquiry is corresponding takies;
Step S203, judge the internal memory threshold values whether memory value that target program takies exceedes user and arrange.
During concrete enforcement, user sets up communication by binder and CauseGC, and transmit the program name appName that will monitor and optimize, and the internal memory threshold values threshHold be set to shared by this program, when there being multiple program need monitoring and optimize, multiple parameter can be transmitted simultaneously, when printenv imports into, give tacit consent to and default value optimization is carried out to all programs;
After CauseGC receives appName and threshHold that user imports into, by obtaining run time behaviour machine Runtime.getRuntime (), and perform shell-command procrank|grepappName and the value that first parameter parsed wherein is PID is program process number.SYSTEMUI_PID=`procrank2>&1|busyboxgrepappName|busyboxawk'{print$1}'`；
Create and to circulate the memory size obtained shared by this PID with the while at certain hour interval, by shell-command procrank|grepappName and to parse value that the 4th parameter be wherein PSS be the shared at present internal memory .SYSTEMUI_MEM=`procrank2> & 1|busyboxgrepappName|busyboxawk'{print $ 5}' of this program;
The memory size SYSTEMUI_MEM shared at present by this program and user preset threshold values threshHold compares.
In further embodiment, wherein step S300 specifically comprises:
If the memory value that step S301 target program takies is greater than the internal memory threshold values that user is arranged, android system receives the rev down process rev instruction of user, sends internal memory release target program signal to internal memory monitoring facilities;
Internal memory operation is reclaimed in step S302, execution, the internal memory that release target program takies.
During concrete enforcement, by using the parameter 10 of linuxkill order) SIGUSR1 its be provided as User Defined function, therefore, this order of definable is Memory recycle signal, namely sends 10 signals to Android virtual machine, notifies that it carries out Memory recycle.Perform shell-command kill-10 $ (SYSTEMUI_PID);
Signal 10 is defined as the trigger pip of Memory recycle in Android virtual machine, therefore, when it receives kill-10 $ (SYSTEMUI_PID) signal of CauseGC program transmission, the process corresponding to parameter $ (SYSTEMUI_PID) performs the GC operation of Dalvik, carry out a Memory recycle, by rubbish Memory recycle, and release redistributes use to Dalvik.
Dalvik virtual machine uses Mark-Sweep algorithm to carry out refuse collection.Mark-Sweep algorithm carries out garbage reclamation for two stages of Mark and Sweep exactly.Wherein, the Mark stage, from root collection (RootSet), recursively mark current all objects be cited, and is responsible for reclaiming those objects be not cited the Sweep stage.
Present invention also offers a kind of refinement step process flow diagram of layout dynamic mapping of embody rule embodiment of the Memory Optimize Method based on android system, as shown in Figure 2, method comprises:
Step S10, in init.rc, add CauseGC start-up routine;
Step S20, the target program title reading user's input and internal memory threshold values;
Step S30, obtain process number PID according to target program title;
The memory value PSS of this PID is read in step S40, While circulation;
Step S50, judge whether memory value PSS is greater than internal memory threshold values, if so, then perform step S60, if not, then perform step S40;
Step S60, execution kill-10PID;
Step S70, dormancy N second, wherein the span of N is 3 ~ 5;
Step S80, Dalvik receive this signal;
Step S90, execution GC reclaim internal memory;
Step S91, internal memory are released and redistribute.
From above embodiment of the method, the invention provides a kind of Memory Optimize Method based on android system, target program is there is by implanting in advance, and receive program name and the internal memory threshold values that user instruction obtains key monitoring, the memory value size of the program of inquiry key monitoring, the bolt down procedure when exceeding internal memory threshold values, the internal memory that release procedure takies.The present invention solves the defect that Android memory management is not reclaimed in time to junk data committed memory, real-time garbage reclamation releases a lot of effective internal memory, thus reduce the probability that process is directly killed in Android memory management, and the application of those emphasis consumption internal memory can be monitored separately, the internal memory optimizing application uses, realize the internal memory use that user can customize application program, improve customization and management and control.
On the basis of said method embodiment, present invention also offers a kind of functional schematic block diagram of preferred embodiment of the memory optimizing system based on android system, as shown in Figure 3, described system comprises:
Monitoring modular 100, after android system start, the memory value that each process of internal memory monitoring facilities monitoring android system takies; As detailed above.
Inquiry and judge module 200, carry out the target program title monitored, the memory value that query aim program takies for the needs obtaining user's input, judges whether memory value that target program takies is greater than the internal memory threshold values of user's setting; As detailed above.
Internal memory release module 300, if the memory value taken for target program is greater than the internal memory threshold values that user is arranged, the internal memory that release target program takies; As detailed above.
The described memory optimizing system based on android system, wherein, described system also comprises:
Pre-setting module, in advance the internal memory monitoring facilities of the memory value of process each in detecting/monitoring android system being registered as starting up, and internal memory monitoring facilities being set to System Privileges program; As detailed above.
The described memory optimizing system based on android system, wherein, described inquiry and judge module specifically comprise:
Target program title acquiring unit, for being established a communications link by binder and internal memory monitoring facilities, receives the target program title of the needs monitoring of user's input; As detailed above.
Resolve and query unit, parse program process number corresponding to target program title for internal memory monitoring facilities, according to the program process number memory value that the target program that inquiry is corresponding takies; As detailed above.
Judging unit, for judging the internal memory threshold values whether memory value that target program takies exceedes user and arrange; As detailed above.
The described memory optimizing system based on android system, wherein, described internal memory release module specifically comprises:
Internal memory release signal transmitting element, if the memory value taken for target program is greater than the internal memory threshold values that user is arranged, android system receives the rev down process rev instruction of user, sends internal memory release target program signal to internal memory monitoring facilities; As detailed above.
Instruction execution unit, for performing recovery internal memory operation, the internal memory that release target program takies; As detailed above.
The described memory optimizing system based on android system, wherein, described system also comprises:
Sleep block, after performing a memory discharge operation, after dormancy one schedule time, continues the memory value of each process of monitoring android system for android system; As detailed above.
In sum, the invention provides a kind of Memory Optimize Method based on android system and system, described method comprises: after android system start, the memory value that each process of internal memory monitoring facilities monitoring android system takies; The needs obtaining user's input carry out the target program title monitored, the memory value that query aim program takies, and judge whether memory value that target program takies is greater than the internal memory threshold values of user's setting; If the memory value that target program takies is greater than the internal memory threshold values that user is arranged, the internal memory that release target program takies.The present invention can initiatively also monitor the service condition of internal memory in real time and accomplish that rubbish internal memory reclaims in time, also can realize specifying single or multiple program to implement simultaneously, and user preset threshold values is provided, the internal memory that can manage oneself equipment for user uses and provides conveniently.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. based on a Memory Optimize Method for android system, it is characterized in that, method comprises:
After the start of A, android system, the memory value that each process of internal memory monitoring facilities monitoring android system takies;
B, the needs obtaining user's input carry out the target program title monitored, the memory value that query aim program takies, and judge whether memory value that target program takies is greater than the internal memory threshold values of user's setting;
If the memory value that C target program takies is greater than the internal memory threshold values that user is arranged, the internal memory that release target program takies.
2. the Memory Optimize Method based on android system according to claim 1, is characterized in that, also comprises before described steps A:
S, in advance the internal memory monitoring facilities of memory value of each process in monitoring android system is registered as starting up, and internal memory monitoring facilities is set to System Privileges program.
3. the Memory Optimize Method based on android system according to claim 2, is characterized in that, described step B specifically comprises:
B1, to be established a communications link by binder and internal memory monitoring facilities, receive the target program title of the needs monitoring of user's input;
B2, internal memory monitoring facilities parse program process number corresponding to target program title, according to the program process number memory value that the target program that inquiry is corresponding takies;
B3, judge the internal memory threshold values whether memory value that target program takies exceedes user and arrange.
4. the Memory Optimize Method based on android system according to claim 3, is characterized in that, described step C specifically comprises:
If the memory value that C1 target program takies is greater than the internal memory threshold values that user is arranged, android system receives the rev down process rev instruction of user, sends internal memory release target program signal to internal memory monitoring facilities;
Internal memory operation is reclaimed in C2, execution, the internal memory that release target program takies.
5. the Memory Optimize Method based on android system according to claim 4, is characterized in that, also comprises after described step C:
After D, android system perform a memory discharge operation, after dormancy one schedule time, continue the memory value of each process of monitoring android system.
6. based on a memory optimizing system for android system, it is characterized in that, system comprises:
Monitoring modular, after android system start, the memory value that each process of internal memory monitoring facilities monitoring android system takies;
Inquiry and judge module, carry out the target program title monitored, the memory value that query aim program takies for the needs obtaining user's input, judges whether memory value that target program takies is greater than the internal memory threshold values of user's setting;
Internal memory release module, if the memory value taken for target program is greater than the internal memory threshold values that user is arranged, the internal memory that release target program takies.
7. the memory optimizing system based on android system according to claim 6, is characterized in that, described system also comprises:
Pre-setting module, in advance the internal memory monitoring facilities of the memory value of process each in detecting/monitoring android system being registered as starting up, and internal memory monitoring facilities being set to System Privileges program.
8. the memory optimizing system based on android system according to claim 7, is characterized in that, described inquiry and judge module specifically comprise:
Target program title acquiring unit, for being established a communications link by binder and internal memory monitoring facilities, receives the target program title of the needs monitoring of user's input;
Resolve and query unit, parse program process number corresponding to target program title for internal memory monitoring facilities, according to the program process number memory value that the target program that inquiry is corresponding takies;
Judging unit, for judging whether the memory value that target program takies exceedes the internal memory threshold values pre-set.
9. the memory optimizing system based on android system according to claim 8, is characterized in that, described internal memory release module specifically comprises:
Internal memory release signal transmitting element, if the memory value taken for target program is greater than the internal memory threshold values that user is arranged, android system receives the rev down process rev instruction of user, sends internal memory release target program signal to internal memory monitoring facilities;
Instruction execution unit, for performing recovery internal memory operation, the internal memory that release target program takies.
10. the memory optimizing system based on android system according to claim 9, is characterized in that, described system also comprises:
Sleep block, after performing a memory discharge operation, after dormancy one schedule time, continues the memory value of each process of monitoring android system for android system.
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| CN112650695A (en) * | 2020-12-30 | 2021-04-13 | 北京奇艺世纪科技有限公司 | Cache management method and device of application server |
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