CN110413321A - A kind of android system quick start method and device - Google Patents
A kind of android system quick start method and device Download PDFInfo
- Publication number
- CN110413321A CN110413321A CN201810398288.0A CN201810398288A CN110413321A CN 110413321 A CN110413321 A CN 110413321A CN 201810398288 A CN201810398288 A CN 201810398288A CN 110413321 A CN110413321 A CN 110413321A
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- Prior art keywords
- library
- apk
- crc check
- characteristic information
- cache file
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1004—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's to protect a block of data words, e.g. CRC or checksum
-
- 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
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4406—Loading of operating system
Abstract
The invention discloses a kind of android system quick start method and devices, this method comprises: S1 obtains apk characteristic information from apk;S2 judges the library the C ABI information of apk, the library C CRC check value whether are stored in cache file;If it has, then executing S3;If it has not, then executing S5;S3 compare cache file in apk characteristic information with it is whether consistent from the apk characteristic information in apk;If it has, then executing S4;If it has not, then deleting the library C ABI information, the library C CRC check value and the apk characteristic information stored in cache file, S5 is executed;S4 obtains the library the C ABI information of apk, the library C CRC check value from cache file;S5 obtains the library C ABI information, the library C CRC check value from apk, executes S6;S6 is by the apk characteristic information obtained from the apk and the library C ABI information, the storage of the library C CRC check value into cache file.The library C ABI information, the library C CRC check value are obtained from cache file, shorten the building time of third-party application when android system starting.
Description
Technical field
The present invention relates to computer operating system technical field more particularly to a kind of android system quick start methods
And device.
Background technique
Android(Android) system is Google(Google) operating system of a open source released, it is widely used in each
Class consumption electronic product.Android system start-up course mainly includes Boot load(bootstrap loader), linux kernel,
The parsing of init script executes, android system service starts several stages.
There is the scheme of all angles optimal startup speed in industry at present, but is directed to third party currently without a kind of scheme
Application software installation bring additionally starts time-consuming and optimizes.
When android system starts every time, it is required to all application program installation kit (Android in system
Package, abbreviation apk) it is scanned installation, if android system is mounted with that more third-party applications, apk are assured
The starting time-consuming of reason service will linearly increase.The time-consuming can directly be accumulated to the starting time of system, cause the available machine time long,
Influence the experience of user.
The starting of third-party application bring system is time-consuming, the ABI(Application Binary Interface in the library C that mainly apk is included)
Time-consuming caused by information inquiry operation and the verification operation in the library C.
The ABI information inquiry operation in the library primary android system C is achieved in that be read from third-party application apk;It is right
The library third-party application C verification operation be pass through read in apk the content in the library C and read in Date subregion using under exclusive catalogue
The content in the library C of decompression, then by the CRC in the library C read from the CRC check value in the library C read in apk and from Date subregion
Realization is compared in check value.
Summary of the invention
In view of the deficiencies of the prior art, the invention proposes a kind of android system quick start method and device, the party
In the state that C library ABI information, C library CRC check value of the method in cache file are effective, ABI letter in the library C is obtained from cache file
Breath, the library C CRC check value, solve in existing android system start-up course, since third-party application apk scanning causes to be switched on
Slowly, the problem of influencing user experience.
To achieve the goals above, technical solution of the present invention is as follows:
A kind of android system quick start method, comprising the following steps:
S1: scanning the apk of third-party application, and apk characteristic information is obtained from the apk;
S2: judge the library the C ABI information of the apk, the library C CRC check value whether are stored in cache file;If it has, then executing
S3;If it has not, then executing S5;
S3: comparing the apk characteristic information stored in cache file and whether the apk characteristic information obtained from the apk be consistent;If
Be it is yes, then execute S4;If it has not, then deleting the library C ABI information, the library C CRC check value and the apk feature stored in cache file
Information, and execute S5;
S4: the library C ABI information, the library the C CRC check value of the apk are obtained from cache file;
S5: scanning the apk, and the library C ABI information, the library C CRC check value are obtained from the apk, executes S6;
S6: by the apk characteristic information obtained from the apk and the library C ABI information, the library C CRC check value storage to cache file
In.
Further, after step s4, also include step S7: to the library the C CRC check value obtained from cache file into
Row verification.
Further, after step s4, it also comprises the steps of:
S71: scanning Data subregion obtains C planting modes on sink characteristic information corresponding with the apk from Data subregion;
S72: judge C corresponding with the apk library CRC check reference value that Data subregion whether is stored in cache file;If
It is then to execute S73;If it has not, then executing S75;
S73: comparing the C planting modes on sink characteristic information stored in cache file and whether the C planting modes on sink characteristic information obtained from Data subregion be consistent;
If it has, then executing S74;If it has not, then deleting the library the C CRC check reference value stored in cache file and C Al Kut reference
Breath executes S75;
S74: obtaining the library C CRC check reference value from cache file, executes S77;
S75: scanning Data subregion obtains the library C CRC check reference value from Data subregion, executes S76;
S76: it by the C planting modes on sink characteristic information obtained from Data subregion and the storage of the library C CRC check reference value into cache file, holds
Row S77;
S77: comparing the library C CRC check value and whether CRC check reference value in the library C is consistent;If it has, then the library C of the apk verifies knot
Fruit is effective;If it has not, then the library the C check results of the apk are invalid.
Further, after step s 5, also include step S8: the library the C CRC check value obtained from the apk is carried out
Verification.
Further, after step s 5, it also comprises the steps of:
S81: scanning Data subregion obtains C planting modes on sink characteristic information corresponding with the apk and the library C CRC check reference from Data subregion
Value executes S82;
S82: it by the C planting modes on sink characteristic information obtained from Data subregion and the storage of the library C CRC check reference value into cache file, holds
Row S83;
S83: comparing the library C CRC check value and whether CRC check reference value in the library C is consistent;If it has, then the library C of the apk verifies knot
Fruit is effective;If it has not, then the library the C check results of the apk are invalid.
Further, the apk characteristic information includes modification time, file size or/and the Hash digest of the apk.
Further, the C planting modes on sink characteristic information includes modification time, file size or/and the Hash in the library C in the apk
Abstract.
A kind of android system device for rapidly starting, including memory, processor and be stored on the memory and can
The computer program run on the processor;The computer program is realized above-mentioned any one when being executed by the processor
The step of method of item.
Beneficial effects of the present invention:
(1) it in the state that C library ABI information, C library CRC check value of this method in cache file are effective, is obtained from cache file
The library C ABI information, the library C CRC check value are taken, substitutes and needs to scan acquisition from apk when traditional android system starts every time
The library C ABI information, the mode of the library C CRC check value of third-party application shorten third-party application when android system starting
Building time.The initial scanning phase of apk, only scanning obtains apk characteristic information, by with the apk that is stored in cache file
Characteristic information is compared, and determines the validity of the library the C ABI information, the library C CRC check value that store in cache file, it is ensured that
When android system starts, the reliability of the library C ABI information inquiry and CRC check.
(2) it in the state that C library CRC check reference value of this method in cache file is effective, is obtained from cache file
The library the C CRC check reference value for the apk that Data subregion has decompressed, substitute when traditional android system starts every time need from
Data subregion applies the mode that the library the C CRC check reference value of third-party application is obtained under exclusive catalogue, effectively shortens the library C
The CRC check time.The initial scanning phase of Data subregion, only scanning obtain apk C planting modes on sink characteristic information, by with cache file
The C planting modes on sink characteristic information of middle storage is compared, and determines the validity of the library the C CRC check reference value stored in the second cache file,
When ensuring android system starting, the reliability of the library C CRC check.
Detailed description of the invention
Fig. 1 is the flow diagram of android system quick start method of the invention.
Fig. 2 is the flow diagram of step S7 in Fig. 1.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.
Embodiment 1:
As shown in Figure 1, a kind of android system quick start method, includes the following steps S0-S6:
S0: start to start android system.
S1: scanning the apk of third-party application, and apk characteristic information is obtained from the apk.
Apk characteristic information contains whether the modification time of apk, apk file size, apk Hash digest etc. can reflect apk
The information of change.Start the stage of starting android system, only the scanning apk modification time of selectivity, apk file size, Kazakhstan
All information or the partial informations such as uncommon abstract, whether the apk of third-party application changes for identification.In addition, also obtaining
The information such as application version, component, the permission of third-party application simultaneously do relevant treatment.
S2: judge the library the C ABI information of the apk, the library C CRC check value whether are stored in cache file;If it has, then holding
Row S3;If it has not, then executing S5.
Cache file stores the library C ABI information, the library the C CRC check value scanned from the apk of third-party application in advance
And apk characteristic information.
S3: compare the apk characteristic information that stores in cache file and the apk characteristic information that is obtained from the apk whether one
It causes;If it has, then executing S4;If it has not, then deleting the apk characteristic information stored in cache file, the library C ABI information and the library C
CRC check value, and execute S5.
By out of apk actual scanning to apk modification time, apk file size, all information such as apk Hash digest or
The corresponding information stored in person's partial information and cache file is compared one by one, if inconsistent between corresponding information,
Illustrate that the apk of third-party application is changed, apk characteristic information, the library C ABI information and the C of the storage of default cache file Central Plains
Whole relevant informations of the third-party application of cache file Central Plains storage are then deleted in CRC check value failure in library.
S4: the library C ABI information, the library the C CRC check value of the apk are obtained from cache file.
If the library the C ABI information of the apk stored in cache file, the library C CRC check value are effective, from cache file
The library C ABI information, the library the C CRC check value for directly reading the apk saved, instead of by way of scanning apk, to save
The scanning of apk and parsing time, and then saved time of android system starting.
S5: scanning the apk, and the library C ABI information, the library C CRC check value are obtained from the apk, executes S6.
If the failure of the library C ABI information in cache file, the library C CRC check value, the library C ABI information in cache file,
The library C CRC check value is unavailable, needs to scan and obtain out of third-party application apk the library C ABI information, the library C CRC check value.
S6: by the apk characteristic information obtained from the apk and the library C ABI information, the library C CRC check value storage to caching
In file.
If the library C ABI information, the failure of the library C CRC check value in cache file, will sweep out of third-party application apk
Retouch the former corresponding letter to fail in the apk characteristic information and the library C ABI information, the library C CRC check value replacement cache file of acquisition
Breath.
Verification is compared with the library C CRC check reference value in the library the C CRC check value that will acquire, if verification is effectively, permits
Perhaps the library the C operation of the third-party application.
In the state that C library ABI information, C library CRC check value of this method in cache file are effective, from cache file
The library C ABI information, the library C CRC check value are obtained, substitutes and needs to scan from apk when traditional android system starts every time to obtain
The library the C ABI information of third-party application, the mode of the library C CRC check value are taken, third party when shortening android system starting answers
Building time.The initial scanning phase of apk, only scanning obtains apk characteristic information, by with store in cache file
Apk characteristic information is compared, and determines the validity of the library the C ABI information, the library C CRC check value that store in cache file, it is ensured that
When android system starting, the reliability of the library C ABI information inquiry and CRC check.
Specifically, after step s4, also include step S7: the library the C CRC check value obtained from cache file is carried out
Verification.
As shown in Fig. 2, step S7 is comprised the steps of:
S71: scanning Data subregion obtains C planting modes on sink characteristic information corresponding with the apk from Data subregion.
C planting modes on sink characteristic information contains the modification time in the library C in third-party application apk, C library file size, the library C Hash and plucks
Wait the information that can reflect whether the library C changes.The scan phase of Data subregion, it is only selective to the library the C information of third-party application
The library scanning C modification time, C library file size, all information or the partial information such as the library C Hash digest, Data for identification
Whether change in the library C of the apk decompressed in subregion.
S72: judge C corresponding with the apk library CRC check reference value that Data subregion whether is stored in cache file;
If it has, then executing S73;If it has not, then executing S75.
Cache file storage is in advance from Data subregion using the third-party application decompressed that scanning obtains under exclusive catalogue
Apk in the library C CRC check reference value and C planting modes on sink characteristic information.
S73: the C planting modes on sink characteristic information that stores in cache file and the C planting modes on sink characteristic information that obtains from Data subregion are compared whether
Unanimously;If it has, then executing S74;If it has not, then deleting the library the C CRC check reference value stored in cache file and C Al Kut
Reference breath, executes S75.
By from Data subregion actual scanning to the library C modification time, C library file size, all information such as the library C Hash digest
Or the corresponding information stored in partial information and cache file is compared one by one, if inconsistent between corresponding information,
Then illustrate the C planting modes on sink characteristic information and the failure of the library C CRC check reference value that the Data subregion stored in cache file has decompressed, deletes
Except the C planting modes on sink characteristic information and the library C CRC check reference value stored in cache file.
S74: obtaining the library C CRC check reference value from cache file, executes S77.
If the library the C CRC check reference value in cache file is effective, this saved is directly read from cache file
The library the C CRC check reference value of apk, instead of by way of scanning Data subregion, to save the scanning reconciliation of Data subregion
The time is analysed, and then has saved the time of android system starting.
S75: scanning Data subregion obtains the library C CRC check reference value from Data subregion, executes S76.
If the library the C CRC check reference value in cache file fails, the library the C CRC check reference value in cache file is not
It can use, need to obtain the library the C CRC check reference value of the apk decompressed from Data subregion.
S76: the C planting modes on sink characteristic information obtained from Data subregion and the library C CRC check reference value are stored to cache file
In, execute S77;
If the library the C CRC check reference value in cache file fails, the C planting modes on sink characteristic information and C that will be obtained from Data subregion
CRC check reference value in library substitutes the corresponding information of the former failure in cache file.
S77: comparing the library C CRC check value and whether CRC check reference value in the library C is consistent;If it has, then the library the C school of the apk
It is effective for testing result;If it has not, then the library the C check results of the apk are invalid.
In the state that C library CRC check reference value of this method in cache file is effective, Data is obtained from cache file
The library the C CRC check reference value for the apk that subregion has decompressed is substituted and is needed when traditional android system starts every time from Data
Subregion applies the mode that the library the C CRC check reference value of third-party application is obtained under exclusive catalogue, effectively shortens the school CRC in the library C
Test the time.The initial scanning phase of Data subregion, only scanning obtain apk C planting modes on sink characteristic information, by with stored in cache file
C planting modes on sink characteristic information be compared, determine the validity of the library the C CRC check reference value stored in the second cache file, it is ensured that
When android system starts, the reliability of the library C CRC check.
Specifically, after step S5 or S6, also include step S8: to the library the C CRC check value obtained from the apk into
Row verification.
Step S8 is comprised the steps of:
S81: scanning Data subregion obtains C planting modes on sink characteristic information corresponding with the apk and the library C CRC check reference from Data subregion
Value executes S82.
S82: the C planting modes on sink characteristic information obtained from Data subregion and the library C CRC check reference value are stored to cache file
In, execute S83.
S83: comparing the library C CRC check value and whether CRC check reference value in the library C is consistent;If it has, then the library the C school of the apk
It is effective for testing result;If it has not, then the library the C check results of the apk are invalid.
In the present embodiment, stored from the apk characteristic information and cache file obtained in the apk in step S3 comparison
During apk characteristic information, if inconsistent between corresponding information, illustrates that the apk of third-party application is changed, write from memory
The library the C information for recognizing Data partitioned storage is also changed, the C planting modes on sink characteristic information of cache file Central Plains storage and the library the C school CRC
Test reference value and be considered as failure, the library the C relevant information of the apk that the Data subregion for no longer needing to store cache file has decompressed into
Step S72, S73 in step S7 is omitted in row validity check, i.e. step S8, to simplify the operand of program.
Preferably, the caching text for storing the apk characteristic information in apk, the library C ABI information and the library C CRC check value
Part is the first cache file;For storing the slow of storage C planting modes on sink characteristic information in Data subregion and the library C CRC check reference value
Depositing file is the second cache file.
Embodiment 2:
Present embodiments provide a kind of android system device for rapidly starting, comprising: memory, processor and be stored in storage
On device and the computer program that can run on a processor, above-mentioned any one method is realized when computer program is executed by processor
The step of.
What has been described above is only a preferred embodiment of the present invention, and present invention is not limited to the above embodiments.It is appreciated that this
Other improvements and changes that field technical staff directly exports or associates without departing from the basic idea of the present invention
It is considered as being included within protection scope of the present invention.
Claims (8)
1. a kind of android system quick start method, it is characterised in that:
The following steps are included:
The apk for scanning third-party application obtains apk characteristic information from the apk;
Judge the library C ABI information, the library C CRC check value that the apk whether is stored in cache file;
If be stored with the library the C ABI information of the apk, the library C CRC check value in cache file, compare and stored in cache file
Whether apk characteristic information and the apk characteristic information obtained from the apk are consistent;
If the apk characteristic information stored in cache file is consistent with the apk characteristic information obtained from the apk, from caching text
The library C ABI information, the library the C CRC check value of the apk are obtained in part;
If the apk characteristic information stored in cache file and the apk characteristic information obtained from the apk are inconsistent, scanning should
Apk, from the apk obtain the library C ABI information, the library C CRC check value, and with obtained from the apk apk characteristic information, the library C
ABI information and apk characteristic information, the library C ABI information and the library the C CRC of the storage in the library C CRC check value replacement cache file
Check value;
If the not stored library the C ABI information for having the apk, the library C CRC check value, scan the apk, from the apk in cache file
The library C ABI information, the library C CRC check value are obtained, and by the apk characteristic information obtained from the apk, the library C ABI information and the library C
CRC check value is stored into cache file.
2. android system quick start method according to claim 1, it is characterised in that:
It is described from the library the C ABI information, the library the C CRC check value that obtain the apk in cache file the step of after also comprising following
Step:
Data subregion is scanned, obtains C planting modes on sink characteristic information corresponding with the apk from Data subregion;
Judge C corresponding with the apk library CRC check reference value that Data subregion whether is stored in cache file;
If being stored with C corresponding with the apk library CRC check reference value of Data subregion in cache file, cache file is compared
Whether the C planting modes on sink characteristic information of middle storage and the C planting modes on sink characteristic information obtained from Data subregion are consistent;
If the C planting modes on sink characteristic information stored in cache file is consistent with the C planting modes on sink characteristic information obtained from Data subregion, from caching text
The library the C CRC check reference value is obtained in part;
If the C planting modes on sink characteristic information stored in cache file and the C planting modes on sink characteristic information obtained from Data subregion are inconsistent, scan
Data subregion obtains the library the C CRC check reference value from Data subregion, and with the C planting modes on sink characteristic information obtained from Data subregion with
And C planting modes on sink characteristic information and the library the C CRC check reference value in the library the C CRC check reference value replacement cache file;
If the not stored library the C CRC check reference value corresponding with the apk for having Data subregion, is scanned in cache file
Data subregion obtains the library the C CRC check reference value from Data subregion, and by the C planting modes on sink characteristic information obtained from Data subregion with
And the library the C CRC check reference value storage is into cache file;
It compares the library C CRC check value and whether the library the C CRC check reference value is consistent;If it has, then the library the C school of the apk
It is effective for testing result;If it has not, then the library the C check results of the apk are invalid.
3. android system quick start method according to claim 1, it is characterised in that:
It is also comprised the steps of: after the step of obtaining the library C ABI information, the library C CRC check value in the apk described
Data subregion is scanned, obtains C planting modes on sink characteristic information corresponding with the apk and the library C CRC check reference value from Data subregion;
By the C planting modes on sink characteristic information obtained from Data subregion and the library C CRC check reference value storage into cache file;
It compares the library C CRC check value and whether the library the C CRC check reference value is consistent;If it has, then the library the C school of the apk
It is effective for testing result;If it has not, then the library the C check results of the apk are invalid.
4. android system quick start method according to claim 1, it is characterised in that:
It is described from the library the C ABI information, the library the C CRC check value that obtain the apk in cache file the step of after also comprising following
Step:
The library the C CRC check value obtained from cache file is verified.
5. android system quick start method according to claim 1, it is characterised in that:
It is also comprised the steps of: after the step of obtaining the library C ABI information, the library C CRC check value in the apk described
The library the C CRC check value obtained from the apk is verified.
6. android system quick start method according to claim 1, it is characterised in that:
The apk characteristic information includes modification time, file size or/and the Hash digest of the apk.
7. android system quick start method according to claim 2, it is characterised in that:
The C planting modes on sink characteristic information includes modification time, file size or/and the Hash digest in the library C in the apk.
8. a kind of android system device for rapidly starting, it is characterised in that:
Including memory, processor and it is stored in the computer program that can be run on the memory and on the processor;
The step of computer program realizes method as claimed in any of claims 1 to 7 in one of claims when being executed by the processor.
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