CN101561763B - Method and device for realizing dynamic-link library - Google Patents
Method and device for realizing dynamic-link library Download PDFInfo
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- CN101561763B CN101561763B CN200910083419A CN200910083419A CN101561763B CN 101561763 B CN101561763 B CN 101561763B CN 200910083419 A CN200910083419 A CN 200910083419A CN 200910083419 A CN200910083419 A CN 200910083419A CN 101561763 B CN101561763 B CN 101561763B
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Abstract
The embodiment of the invention discloses a method and a device for realizing a dynamic-link library and belongs to the field of communication. The method comprises: loading a dynamic-link library file; acquiring an interface address of service provided by the dynamic-link library file for other outside applications; and releasing the dynamic-link library file. The device comprises a load module, an acquisition module and a release module. The embodiment of the invention has the advantages that: by loading the dynamic-link library file and unloading the dynamic-link library file after being used, the loading of the dynamic-link library files of a plurality of other outside applications at the same time can be realized; and the dynamic-link library file enables other outside application packages to occupy smaller space, update more convenient and save flowing rate, and also enables the other outside applications to develop more rapidly and conveniently at the same time.
Description
Technical field
The present invention relates to the communications field, particularly a kind of method and apparatus of realizing dynamic link library.
Background technology
The MTK platform is because the higher percent of completion of its cheap price is widely used in each terminal brand as present most popular terminal solution.But, cause MTK platform terminal application deployment when producing, to be burnt in ROM (Read-Only Memory, the ROM (read-only memory)) chip at terminal because its software platform is not supported dynamic load and the online updating used.And cruel terminal challenge makes manufacturer constantly compress production cost, and the rom chip space is also more and more littler, has restricted the performance and the content of terminal applies, becomes the first bottleneck of terminal applies exploitation.Pass through the dynamic load middleware platform in the prior art; When operation is used, application file is loaded into RAM (random access memory from file system; Random access memory) in the memory headroom; Solved the problem that can only leave the ROM space in of using, thereby solved ROM space anxiety and use abundant performance and content contradiction before.The middleware platform support is downloaded whole application bag and is upgraded.
But no matter application be placed on the ROM space still be the ram space size all be limited, when having a plurality of applications, the dynamic load middleware platform is used when loading more, memory headroom possibly can not stored any more the shared spaces of many application.
Summary of the invention
When realizing that many application load simultaneously, size and the memory headrooms of using do not produce conflict more, and the embodiment of the invention provides a kind of method and apparatus of realizing dynamic link library.Said technical scheme is following:
A kind of method that realizes dynamic link library, said method comprises:
Receive the request that loads dynamic link library file;
Load request according to receiving judges whether dynamic link library file loads;
If load, Counter Value adds 1 in then that said dynamic link library file is the corresponding handle, and carries out the step that receives the request that loads dynamic link library file;
If do not load; Load according to said dynamic link library file name; If load successfully,, and in the handle of said distribution, preserve said dynamic link library file information for said dynamic link library file distributes idle handle; Said Counter Value is initialized as preset value and adds 1, carry out the step that receives the request that loads dynamic link library file then; Otherwise, directly carry out the step that said reception loads the request of dynamic link library file;
The request of the service interface address that said dynamic link library file provides outside other application is obtained in reception;
Call the query function of preserving in the handle according to the said function name of obtaining in the request and inquire about the service interface relative address that said dynamic link library file provides outside other application; If find; The said relative address of inquiry is added the start address of the above dynamic link library file, the service interface address that outside other application is provided as said dynamic link library file; Otherwise, carry out to receive the step of the request of obtaining the service interface address that dynamic link library file provides outside other application;
Discharge said dynamic link library file.
Said dynamic link library file information comprises: query interface function pointer, dynamic link library file name and dynamic link library file start address.
Said release dynamic link library file specifically comprises:
Receive the request that discharges said dynamic link library file;
Counter Value subtracts 1 in the handle that said dynamic link library file is corresponding, and judges whether the current Counter Value that subtracts after 1 is preset value, if then said dynamic link library file is discharged from internal memory; Otherwise, carry out the step that receives the request that discharges said dynamic link library file.
A kind of device of realizing dynamic link library, said device comprises: first receiving element, first judging unit, loading unit, second receiving element, query unit, computing unit and release module;
Said first receiving element is used to receive the request that loads dynamic link library file;
Said first judging unit is used for judging according to the load request that receives whether said dynamic link library file loads, if Counter Value adds 1 in then that said dynamic link library file is the corresponding handle, and triggers said first receiving element; Otherwise, trigger said loading unit;
Said loading unit; After being used to receive the triggering of said judging unit, load, if load successfully according to said dynamic link library file name; For said dynamic link library file distributes idle handle; And in the handle of said distribution, preserve said dynamic link library file information, and said Counter Value is initialized as preset value and adds 1, trigger said first receiving element then; Otherwise, directly trigger said first receiving element;
Said second receiving element is used to receive the request of obtaining the service interface address that said dynamic link library file provides outside other application;
Said query unit is used for calling the query function of preserving in the handle according to the said function name of obtaining request and inquires about said dynamic link library file to the service interface relative address that outside other application provide, if find, then triggers said computing unit; Otherwise, trigger said receiving element;
Said computing unit; After being used to receive the triggering of said query unit; The said relative address of said query unit inquiry is added the start address of the above dynamic link library file, the service interface address that outside other application is provided as said dynamic link library file;
Said release module is used to discharge the dynamic link library file that said load-on module loads.
Said dynamic link library file information comprises: query interface function pointer, dynamic link library file name and dynamic link library file start address.
Said release module specifically comprises: the 3rd receiving element, second judging unit and releasing unit;
Said the 3rd receiving element is used to receive the request that discharges said dynamic link library file;
Said second judging unit is used for the handle Counter Value that said dynamic link library file is corresponding and subtracts 1, and judge whether the current Counter Value that subtracts after 1 is preset value, if trigger said releasing unit; Otherwise, trigger said receiving element;
Said releasing unit after being used to receive the triggering of said judging unit, discharges said dynamic link library file from internal memory.
The beneficial effect of the embodiment of the invention is: through loading dynamic link library file; After using, unload, can realize that use simultaneously loads more, and dynamic link library makes that using bag takes up room littler; Upgrade convenient and province's flow, also make application and development faster simultaneously.
Description of drawings
Fig. 1 is the method flow synoptic diagram of the realization dynamic link library that provides of the embodiment of the invention 1;
Fig. 2 is the process synoptic diagram of the loading dynamic link library file that provides of the embodiment of the invention 1;
Fig. 3 is the process synoptic diagram that obtains the service interface address that dynamic link library file provides outside other application that the embodiment of the invention 1 provides;
Fig. 4 is the process synoptic diagram of the release dynamic link library file that provides of the embodiment of the invention 1;
Fig. 5 is the apparatus structure synoptic diagram of the realization dynamic link library that provides of the embodiment of the invention 2.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Embodiment 1
Referring to Fig. 1, the embodiment of the invention provides a kind of method that realizes dynamic link library, and this method comprises:
Step 101: load dynamic link library file;
Step 102: obtain the service interface address that dynamic link library file provides outside other application;
Step 103: discharge dynamic link library file.
In the present embodiment, dynamic link library file itself can't independent operating, and dynamic link library file mainly is responsible for to outside other application some specific service being provided, and just provides some functions specifically.The dynamic link library file head fixedly is the query interface of a consolidation form, the function pointer that this interface receiver function name and return function name are corresponding.
Outside other application are meant that in software application software platform is that example describes with the MTK platform in the embodiment of the invention, but is not limited to other software platform.These outside other application needs are accomplished some specific function under the service assist that dynamic link library file provides.Outside other application are carried out the loading of dynamic link library file through the dynamic link librarian, and outside other are applied under the assistance of dynamic link librarian, the service of using dynamic link library file to provide.If certain dynamic link library file loads; Then dynamic link librarian inside has just comprised the corresponding handle of this dynamic link library file; If there are several dynamic link library files to load, then dynamic link librarian inside has just comprised the formation that the corresponding handle of each dynamic link library file forms.
Handle is a structure of in internal memory, pointing to certain dynamic link library file; Preserving this dynamic link library file information in the handle includes but not limited to: the dynamic link library file name; The query interface function pointer of dynamic link library file; Start address and the counter of dynamic link libraries file in internal memory has a counter in the handle.
Wherein,, load dynamic link library file, specifically comprise referring to Fig. 2:
Step 201: receive the request that loads dynamic link library file;
Step 202: the dynamic link library file name according in the load request that receives judges whether this dynamic link library file loads, if load, and execution in step 203; Otherwise, execution in step 204;
Step 203: the Counter Value that this handle is corresponding adds 1, and returns step 201;
Step 204: the dynamic link library file name according in the load request that receives loads, and judges whether to load successfully, if not, return step 201; If, for this dynamic link library file distributes idle handle, and in the handle of this distribution, preserve this dynamic link library file information, Counter Value is initialized as preset value and adds 1, execution in step 201; This information includes but not limited to: query interface function pointer, dynamic link library file name and the dynamic link library file start address in internal memory.
Wherein, convert memory address into dynamic link library file query interface function pointer.
Because dynamic link library file can provide service for other application of several outsides simultaneously, so need counter to write down that dynamic link library file is current to provide service for other application of several outsides altogether.
For example, it is 5 that Counter Value begins, and preset value is 0, and when being judged as dynamic link library file when having loaded, Counter Value adds 1 on 5 bases, and promptly this moment, Counter Value was 6, returned step 201 then, receives the request that loads dynamic link library file once more.
After loading dynamic link library file, judge to have loaded when successful that Counter Value is set to preset value 0 from 5, and Counter Value adds 1 more then, promptly this moment, Counter Value was 1, returned step 201 then, received the request that loads dynamic link library file once more.
Concrete; Load in the dynamic link library file process, the dynamic link librarian receives the request that loads dynamic link library file, and judges whether dynamic link library file loads; When not loading, the dynamic link libraries filename that provides according to outside other application loads.
Wherein,, obtain dynamic link library file, specifically comprise the service interface address that outside other application provide referring to Fig. 3:
Step 301: receive the request obtain the service interface address that dynamic link library file provides outside other application;
Step 302: the function name of obtaining in the request according to receiving is inquired about the service interface relative address that dynamic link library file provides outside other application, if find, then execution in step 303; Otherwise, return step 301;
Concrete, call the query function of preserving in the handle and inquire about the service interface relative address that dynamic link library file provides according to the function name in the request obtained that receives.
Step 303: the service interface relative address that the dynamic link library file of inquiry is provided outside other application adds the start address of dynamic link library file, the service interface address that outside other application is provided as dynamic link library file.
Concrete; Obtain in the service interface address process that dynamic link library file provides outside other application; The dynamic link librarian receives the request obtain the service interface address that dynamic link library file provides outside other application, and the service interface address of assisting outside other application query dynamic link library files that outside other application are provided.
Wherein,, discharge dynamic link library file, specifically comprise referring to Fig. 4:
Step 401: receive the request that discharges dynamic link library file;
Step 402: the Counter Value of corresponding handle is subtracted 1, and judge whether the current Counter Value that subtracts after 1 is preset value, if, execution in step 403; Otherwise, return step 401;
Step 403: the dynamic link library file in the release request that will receive discharges from internal memory, and corresponding handle is removed from formation.
Concrete, after outside other application used dynamic link library file, the dynamic link librarian discharged this dynamic link library file from internal memory.
If counter is 0, that is to say does not have applications when using dynamic link library, just needs the dynamic link librarian from internal memory, to discharge this dynamic link library file.
For example, Counter Value is 6, when receiving the request that discharges dynamic link library file, Counter Value is subtracted 1, and it is not the preset value of Counter Value that promptly current Counter Value becomes 5,5, therefore returns step 401, receives the request that discharges dynamic link library file once more; When Counter Value is preset value 0, execution in step 403.
The beneficial effect of the embodiment of the invention is: through loading dynamic link library file; After using, unload; Can realize that other application of a plurality of outsides load dynamic link library file simultaneously; And dynamic link library file makes outside other use bag to take up room forr a short time, upgrade convenient and save flow, also make outside other application and developments faster simultaneously.
Embodiment 2
Referring to Fig. 5, the embodiment of the invention provides a kind of device of realizing dynamic link library, and this device comprises: load-on module 501, acquisition module 502 and release module 503;
Wherein, load-on module 501 is used to load dynamic link library file;
In the present embodiment, dynamic link library file itself can't independent operating, and dynamic link library file mainly is responsible for to outside other application some specific service being provided, and just provides some functions specifically.The dynamic link library file head fixedly is the query interface of a consolidation form, the function pointer that this interface receiver function name and return function name are corresponding.
Outside other application are meant that in software application software platform is that example describes with the MTK platform in the embodiment of the invention, but is not limited to other software platform.These outside other application needs are accomplished some specific function under the service assist that dynamic link library file provides.Outside other application are carried out the loading of dynamic link library file through the dynamic link librarian, and outside other are applied under the assistance of dynamic link librarian, the service of using dynamic link library file to provide.If certain dynamic link library file loads; Then dynamic link librarian inside has just comprised the corresponding handle of this dynamic link library file; If there are several dynamic link library files to load, then dynamic link librarian inside has just comprised the formation that the corresponding handle of each dynamic link library file forms.
Handle is a structure of in internal memory, pointing to certain dynamic link library file; Preserving this dynamic link library file information in the handle includes but not limited to: the dynamic link library file name; The query interface function pointer of dynamic link library file; Start address and the counter of dynamic link libraries file in internal memory has a counter in the handle.
Wherein, load-on module 501 specifically comprises:
Receiving element is used to receive the request that loads dynamic link library file;
Judging unit is used for judging according to the dynamic link library file name of the load request that receives whether this dynamic link library file loads, if load, then Counter Value is added 1, and triggers receiving element; Otherwise, trigger loading unit;
Loading unit after being used to receive the triggering of judging unit, loads according to the dynamic link library file name in the load request of receiving element reception, and judges whether to load successfully, if not, directly trigger receiving element; If load successfully, for this dynamic link library file distributes idle handle, and in the handle of this distribution, preserve this dynamic link library file information, Counter Value is initialized as preset value and adds 1, and trigger receiving element; This information includes but not limited to: query interface function pointer, dynamic link library file name and the dynamic link library file start address in internal memory.
Wherein, convert memory address into dynamic link library file query interface function pointer.
Because dynamic link library file can provide service for other application of several outsides simultaneously, so need counter to write down that dynamic link library file is current to provide service for other application of several outsides altogether.
For example, it is 5 that Counter Value begins, and preset value is 0, and when being judged as dynamic link library file when having loaded, Counter Value adds 1 on 5 bases, and promptly this moment, Counter Value was 6, returned step 201 then, receives the request that loads dynamic link library file once more.
After loading dynamic link library file, judge to have loaded when successful that Counter Value is set to preset value 0 from 5, and Counter Value adds 1 more then, promptly this moment, Counter Value was 1, returned step 201 then, received the request that loads dynamic link library file once more.
Concrete; Load in the dynamic link library file process, the dynamic link librarian receives the request that loads dynamic link library file, and judges whether dynamic link library file loads; When not loading, the dynamic link libraries filename that provides according to outside other application loads.
Wherein, acquisition module 502 specifically comprises:
Receiving element is used to receive the request of obtaining the service interface address that dynamic link library file provides outside other application;
Query unit is used for inquiring about dynamic link library file to the service interface relative address that outside other application provide according to the function name of the request of obtaining that receives, if find, then triggers computing unit; Otherwise, trigger receiving element;
Concrete, call the query function of preserving in the handle and inquire about the service interface relative address that dynamic link library file provides according to the function name in the request obtained that receives.
Computing unit; After being used to receive the triggering of query unit; The service interface relative address that the dynamic link library file of inquiry is provided outside other application adds the start address of dynamic link library file, the service interface address that outside other application is provided as dynamic link library file.
Concrete; Obtain in the service interface address process that dynamic link library file provides outside other application; The dynamic link librarian receives the request obtain the service interface address that dynamic link library file provides outside other application, and the service interface address of assisting outside other application query dynamic link library files that outside other application are provided.
Wherein, release module 503 specifically comprises:
Receiving element is used to receive the request that discharges dynamic link library file;
Judging unit is used for the Counter Value of corresponding handle is subtracted 1, and judges whether the current Counter Value that subtracts after 1 is preset value, if trigger releasing unit; Otherwise, trigger receiving element;
Releasing unit after being used to receive the triggering of judging unit, discharges dynamic link library file, and corresponding handle is removed from formation from internal memory.
Concrete, after outside other application used dynamic link library file, the dynamic link librarian discharged this dynamic link library file from internal memory.
If counter is 0, that is to say does not have applications when using dynamic link library, just needs the dynamic link librarian from internal memory, to discharge this dynamic link library file.
For example, Counter Value is 6, and when receiving element was received the request that discharges dynamic link library file, judging unit subtracted 1 with Counter Value, and it is not the preset value of Counter Value that promptly current Counter Value becomes 5,5, therefore triggers receiving element; When Counter Value is preset value 0, trigger releasing unit.
The beneficial effect of the embodiment of the invention is: through loading dynamic link library file; After using, unload; Can realize that other application of a plurality of outsides load dynamic link library file simultaneously; And dynamic link library file makes outside other use bag to take up room forr a short time, upgrade convenient and save flow, also make outside other application and developments faster simultaneously.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a method that realizes dynamic link library is characterized in that, said method comprises:
Receive the request that loads dynamic link library file;
Load request according to receiving judges whether said dynamic link library file loads;
If load, Counter Value adds 1 in then that said dynamic link library file is the corresponding handle, and carries out the step that receives the request that loads dynamic link library file;
If do not load; Load according to said dynamic link library file name; If load successfully,, and in the handle of said distribution, preserve said dynamic link library file information for said dynamic link library file distributes idle handle; Said Counter Value is initialized as preset value and adds 1, carry out the step that receives the request that loads dynamic link library file then; Otherwise, directly carry out the step that said reception loads the request of dynamic link library file;
The request of the service interface address that said dynamic link library file provides outside other application is obtained in reception;
Call the query function of preserving in the handle according to the said function name of obtaining in the request and inquire about the service interface relative address that said dynamic link library file provides outside other application; If find; The said relative address of inquiry is added the start address of the above dynamic link library file, the service interface address that outside other application is provided as said dynamic link library file; Otherwise, carry out to receive the step of the request of obtaining the service interface address that dynamic link library file provides outside other application;
Discharge said dynamic link library file.
2. method according to claim 1 is characterized in that, said dynamic link library file information comprises: query interface function pointer, dynamic link library file name and dynamic link library file start address.
3. method according to claim 1 is characterized in that, said release dynamic link library file specifically comprises:
Receive the request that discharges said dynamic link library file;
Counter Value subtracts 1 in the handle that said dynamic link library file is corresponding, and judges whether the current Counter Value that subtracts after 1 is preset value, if then said dynamic link library file is discharged from internal memory; Otherwise, carry out the step that receives the request that discharges said dynamic link library file.
4. a device of realizing dynamic link library is characterized in that, said device comprises: first receiving element, first judging unit, loading unit, second receiving element, query unit, computing unit and release module;
Said first receiving element is used to receive the request that loads dynamic link library file;
Said first judging unit is used for judging according to the load request that receives whether said dynamic link library file loads, if Counter Value adds 1 in then that said dynamic link library file is the corresponding handle, and triggers said first receiving element; Otherwise, trigger said loading unit;
Said loading unit; After being used to receive the triggering of said judging unit, load, if load successfully according to said dynamic link library file name; For said dynamic link library file distributes idle handle; And in the handle of said distribution, preserve said dynamic link library file information, and said Counter Value is initialized as preset value and adds 1, trigger said first receiving element then; Otherwise, directly trigger said first receiving element;
Said second receiving element is used to receive the request of obtaining the service interface address that said dynamic link library file provides outside other application;
Said query unit is used for calling the query function of preserving in the handle according to the said function name of obtaining request and inquires about said dynamic link library file to the service interface relative address that outside other application provide, if find, then triggers said computing unit; Otherwise, trigger said second receiving element;
Said computing unit; After being used to receive the triggering of said query unit; The said relative address of said query unit inquiry is added the start address of the above dynamic link library file, the service interface address that outside other application is provided as said dynamic link library file;
Said release module is used to discharge the dynamic link library file that said load-on module loads.
5. device according to claim 4 is characterized in that, said dynamic link library file information comprises: query interface function pointer, dynamic link library file name and dynamic link library file start address.
6. device according to claim 4 is characterized in that, said release module specifically comprises: the 3rd receiving element, second judging unit and releasing unit;
Said the 3rd receiving element is used to receive the request that discharges said dynamic link library file;
Said second judging unit is used for the handle Counter Value that said dynamic link library file is corresponding and subtracts 1, and judge whether the current Counter Value that subtracts after 1 is preset value, if trigger said releasing unit; Otherwise, trigger said the 3rd receiving element;
Said releasing unit after being used to receive the triggering of said judging unit, discharges said dynamic link library file from internal memory.
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| CN101989203A (en) * | 2010-01-05 | 2011-03-23 | 深圳中兴网信科技有限公司 | Software component management system |
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| CN105094878B (en) * | 2014-05-22 | 2019-02-22 | 阿里巴巴集团控股有限公司 | A kind of method and apparatus of integrated system library file |
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| WO2017015856A1 (en) * | 2015-07-28 | 2017-02-02 | 华为技术有限公司 | Method, device and system for calling operating system library |
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| CN106201633B (en) * | 2016-07-29 | 2018-02-27 | 腾讯科技（深圳）有限公司 | A kind of method and device for injecting dll file |
| CN106325945A (en) * | 2016-08-26 | 2017-01-11 | 北京北信源软件股份有限公司 | Method for collecting network data by using IE browser of window operation system |
| CN108170491B (en) * | 2017-12-26 | 2022-01-28 | 五八有限公司 | APP dynamic link library configuration method, terminal and computer readable storage medium |
| CN109408147B (en) * | 2018-10-22 | 2022-04-19 | 深圳市元征科技股份有限公司 | Protocol determination method, system, device and readable storage medium |
| CN109753319B (en) * | 2018-12-28 | 2020-01-17 | 中科寒武纪科技股份有限公司 | Device for releasing dynamic link library and related product |
| CN111506301B (en) * | 2020-04-24 | 2022-11-11 | 同盾(广州)科技有限公司 | Method for bypassing system restriction reflection call and related equipment |
| CN111796941A (en) * | 2020-07-06 | 2020-10-20 | 北京字节跳动网络技术有限公司 | Memory management method and device, computer equipment and storage medium |
| CN113377448A (en) * | 2021-06-08 | 2021-09-10 | 展讯通信(天津)有限公司 | Service function execution method and electronic equipment |
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