CN102999393A - Data transmission method and device and electronic device - Google Patents
Data transmission method and device and electronic device Download PDFInfo
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- CN102999393A CN102999393A CN201110270360XA CN201110270360A CN102999393A CN 102999393 A CN102999393 A CN 102999393A CN 201110270360X A CN201110270360X A CN 201110270360XA CN 201110270360 A CN201110270360 A CN 201110270360A CN 102999393 A CN102999393 A CN 102999393A
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Abstract
The invention provides a data transmission method and device and an electronic device. The method comprises the steps of: obtaining data to be transmitted to a second operating system by a first operating system to process; obtaining a first virtual address of data in the first operating system; mapping the first virtual address to a second physical address in the second operating system according to a mapping relation; and obtaining a second physical address to process data corresponding to the second physical address under the second operating system. According to the invention, the data transmission efficiency between the operating systems is improved.
Description
Technical field
The present invention relates to the virtual machine technique field, relate in particular to a kind of method, device and electronic equipment of data transmission.
Background technology
A plurality of operating systems may have been moved in the existing electronic equipment, for example run on the host operating system (Host OS) on the hardware platform, and running on client operating system (Guest OS) on the host operating system, client operating system specifically can be on the virtual machine manager (VMM) that operates in the described host operating system.
Because the operation of client operating system relies on another operating system, directly and hardware platform mutual, thereby it is usually lower or can't process some data to the handling property of data file.For instance, when using client operating system to play the HD video file since client operating system can't be directly and video card mutual, can only use CPU that video file is carried out soft decoding, the performance of soft decoding is lower, thereby can cause the generation of the phenomenon such as discontinuous, frame losing of video pictures.
For addressing the above problem, usually client operating system is needed data to be processed, send host operating system to, processed by host operating system, like this, client operating system can not need these data are processed, but directly uses the result after host operating system is processed.In order to realize the data transmission of data between two operating system, the scheme that prior art adopts is: set up a fixing internal memory between client operating system and host operating system, set up a round-robin queue at this section internal memory, by client operating system and this formation of host operating system co-operate, thereby finish the work of transmitting data.The shortcoming of this scheme is, needs at least one times memory data copy action, and for example, with the internal memory that data copy to the host operating system of client operating system can be processed, this is for the data transmission of big data quantity frequently, and efficient is not high.
Summary of the invention
Embodiment of the invention technical matters to be solved provides a kind of method, device and electronic equipment of data transmission, in order to improve the data transmission efficiency between the operating system.
For solving the problems of the technologies described above, the embodiment of the invention provides scheme as follows:
The embodiment of the invention has following beneficial effect at least:
Can find out from the above, the method of the data transmission that the embodiment of the invention provides, device and electronic equipment, by with the virtual address of described data under the first operating system, convert the machine physical address under the second operating system to, so that described the second operating system can be determined described data storage space, and then carry out respective handling.Since do not transmit real data, the just information of address of transmission, therefore, the present embodiment can reduce the data transmission between the operating system, greatly improves data transmission efficiency, and especially when data volume was larger, the advantage of the embodiment of the invention was more outstanding.
In addition, although the present embodiment is on behalf of the data of processing under the first operating system by the second operating system, but the internal memory that the second operating system can direct control the first operating system in the present embodiment, therefore memory data copy not occuring, thereby can greatly reduce the data performance treatment loss that causes owing to the transmission of data.
Description of drawings
Fig. 1 is the schematic flow sheet of method of the data transmission of the embodiment of the invention;
Fig. 2 is the structural representation of device of the data transmission of the embodiment of the invention;
Fig. 3 is the structural representation of the electronic equipment of the embodiment of the invention.
Embodiment
The embodiment of the invention can be set up two efficient data passages between the operating system, the data transmission efficiency between can operating system, and the advantage of the embodiment of the invention is more obvious in frequent, a large amount of data transmission situations.Below with reference to accompanying drawing, the present invention is further illustrated by specific embodiment.
Be illustrated in figure 1 as the schematic flow sheet of method of the data transmission of the embodiment of the invention, this data transmission method is applied to an electronic equipment, and this electronic equipment comprises: the second operating system, run on the first operating system on the second operating system.For example, this first operating system can be directly to run on the hardware platform of this electronic equipment, can be directly and the mutual host operating system (Host OS) of hardware platform, virtual machine platform (for example VMM) can be installed in this host operating system, and the first operating system can be the client operating system (Guest OS) that runs on this virtual machine platform.Because this first operating system is on the virtual machine platform of this electronic equipment, usually directly and hardware platform mutual, thereby the data processing performance of this first operating system and data processing speed will be lower than data processing performance and the data processing speed of this second operating system usually.
In the embodiment of the invention, the first operating system and the second operating system can be dissimilar operating system, wherein, the second operating system can directly run on the hardware platform of electronic equipment, and the first operating system can be directly to run on the hardware platform of electronic equipment.For instance, electronic equipment is computing machine, the second operating system can be Windows operating system, the first operating system can be Android operating system, Windows operating system can directly run on the hardware platform of computing machine, and Android operating system can't directly run on the hardware platform of computing machine.
In the present embodiment, the first operating system is on the second operating system, the second operating system is generally the first operating system a virtual physical address space is provided, and can be referred to as client's physical address space (i.e. physical address in the first operating system).The first operating system that operates on the second operating system is thought oneself in the physical machine operation and is used the client's physical address (Guest Physical Address, GPA) in this client's physical address space to carry out addressing.The second operating system need to be safeguarded physical address (GPA) real machine physical address (the Host Physical Address in the second operating system in the first operating system, HPA) mapping relations between, these mapping relations can be recorded in the P2M table (Physical to Machine Mapping, P2M).
The method of the data transmission of the embodiment of the invention may further comprise the steps:
Here, described data can be the data in the data file in the first operating system, data in sound, the video file for example, the first operating system is not so good as the second operating system usually to the handling property of these data, therefore wish these data transmission to the second operating systems are carried out respective handling, for example by the second operating system video data is decoded and process to obtain the image decoding data.
Operating system is when processing data, and usually needs application virtual address, and the physical address of the virtual address that will apply for and these data is shone upon, and then, to according to this virtual address, the data in this virtual address is processed.Here, the first operating system thinks that own physical address at physical machine operation and use client physical address space carries out addressing.Described the first virtual address is the virtual address that first physical address of described data in client's physical address space of described the first operating system shines upon.
Owing to being real machine physical address under the second operating system, therefore, for so that the second operating system can process described data, need to be the second physical address in the second operating system, the i.e. real machine physical address of described data with first virtual address translation of described data in the first operating system.
Here, after above-mentioned the second physical address that the second operating system obtains to obtain in the above-mentioned steps 13, can process accordingly described data, at this moment, the present embodiment can also may further comprise the steps:
Step 15, application second virtual address corresponding with described the second physical address under described the second operating system, described the second physical address and described the second virtual address are shone upon, thereby can be under described the second operating system, according to described the second virtual address, determine pending described data and process accordingly.
By above step, the embodiment of the invention has realized the pending data in the first operating system are sent to the second operating system and process.In fact, between two operating system, do not transmit described data in the present embodiment, but pass through the virtual address of described data under the first operating system, convert the machine physical address under the second operating system to, so that described the second operating system can be determined described data storage space, and then carry out respective handling.Since do not transmit real data, the just information of address of transmission, therefore, the present embodiment can reduce the data transmission between the operating system, greatly improves data transmission efficiency, and especially when data volume was larger, the advantage of the embodiment of the invention was more outstanding.This shows, although the present embodiment is on behalf of the data of processing under the first operating system by the second operating system, but the internal memory that the second operating system can direct control the first operating system in the present embodiment, therefore memory data copy not occuring one time, can greatly reduce the data performance treatment loss that causes owing to the transmission of data.
In the above-mentioned steps 13 of the present embodiment, described the first virtual address can comprise to the concrete conversion regime of the second physical address:
Step 131, according to the first mapping relations between the virtual address in the first operating system and the physical address, determine first physical address of described data under the first operating system, be the physical address under corresponding described the first operating system of described the first virtual address, the address fragment of described the first physical address may not be continuous.
Here, the first operating system is safeguarded described the first mapping relations, therefore can determine first physical address of described data under the first operating system in the first operating system.
Step 132 according to the second mapping relations between the physical address in the physical address in the first operating system and the second operating system, is described the second physical address with described the first physical address translations.
Here, the physical address of the first operating system is provided by the second operating system, therefore the second operating system is safeguarded virtual machine physical address assignments strategy, be described the first mapping relations, therefore can in the second operating system, determine first physical address of described data under the first operating system.
By above step 131～132, the present embodiment has been realized the virtual address under the first operating system, the conversion of the machine physical address under the second operating system.
The present embodiment utilizes described the second operating system to have the handling property stronger to data, be that the first operating system is on behalf of deal with data by the second operating system, for example, by the software under described the second operating system, hardware resource described data are processed, after being disposed, described the second operating system is returned one to described the first operating system and is used for the indication that notification data has been disposed, and this indication specifically can be an interruption.At this moment, the present embodiment is further comprising the steps of:
Step 16, receive described the second operating system and handling the indication of returning after the described data, normally the application-specific under the first operating system receives described indication here, then, according to described indication, obtain the described data after described the second operating system is processed.
So far, the present embodiment has realized that one is processed data transmission to another operating system, and the entire flow of the data after obtaining to process.
As shown in Figure 2, the embodiment of the invention also provides a kind of device of data transmission, is applied to an electronic equipment.It can be mobile phone, computing machine (such as notebook computer, desktop computer, all-in-one etc.), PAD etc. that described electronic equipment has.Described electronic equipment includes the second operating system and the first operating system that operates on described the second operating system; Described device comprises:
First obtains the unit, is used for obtaining described the first operating system tendency to develop and transports to the data that described the second operating system is processed;
Second obtains the unit, is used for obtaining described data in the first virtual address of described the first operating system;
Map unit is used for according to mapping relations, and described the first virtual address map is become the second physical address in the second operating system;
The 3rd obtains the unit, is used for obtaining described the second physical address, under described the second operating system data corresponding to described the second physical address are processed.
Wherein, described map unit comprises:
The first converting unit is used for according to the virtual address of the first operating system and the first mapping relations between the physical address, determines the first physical address under corresponding described the first operating system of described the first virtual address;
The second converting unit is used for according to the physical address of the first operating system and the second mapping relations between the physical address in the second operating system, is described the second physical address with described the first physical address translations.
Be described the first operating system deal with data for utilizing the second operating system, the described device of the present embodiment also comprises: data processing unit, be used for after obtaining described the second physical address, application second virtual address corresponding with described the second physical address under described the second operating system, and according to described the second virtual address, determine pending described data and process.
After the second operating system processing said data, will return an indication, therefore, the described device of the present embodiment also comprises:
Receiving element is used for receiving described the second operating system and is handling the indication of returning after the described data;
The 4th obtains the unit, is used for according to described indication, obtains the described data after described the second operating system is processed.
The present embodiment also provides a kind of electronic equipment, and this electronic equipment comprises the first operating system and the first operating system that operates on described the second operating system, and this electronic equipment also comprises the device of aforesaid data transmission.
At last, the embodiment of the invention also provides another kind of electronic equipment, and as shown in Figure 3, this electronic equipment 30 includes the second operating system and the first operating system that operates on described the second operating system; Wherein,
Described the first operating system comprises:
First obtains the unit, is used for obtaining described the first operating system tendency to develop and transports to the data that described the second operating system is processed;
The first converting unit is used for according to the virtual address of the first operating system and the first mapping relations between the physical address, determines the first physical address under corresponding described the first operating system of described the first virtual address;
The first transmitting element is used for the information of described the first physical address is sent to described the second operating system;
Described the second operating system comprises:
The first receiving element is for the information of described the first physical address that receives described the first operating system transmission;
The second converting unit is used for according to the physical address of the first operating system and the second mapping relations between the physical address in the second operating system, is described the second physical address with described the first physical address translations;
The 3rd obtains the unit, is used for obtaining described the second physical address, under described the second operating system data corresponding to described the second physical address are processed.
Described the second operating system also is used for described data are processed, and this moment, described the second operating system also comprised:
Data processing unit is used for after obtaining described the second physical address, and application second virtual address corresponding with described the second physical address under described the second operating system, and according to described the second virtual address determined pending described data and processed.
After processing said data is complete, described the second operating system also will be notified described the first operating system, so the second operating system also comprises described in the present embodiment:
The second transmitting element is used for sending an indication to described the first operating system after handling described data;
Described the first operating system also comprises:
The second receiving element is used for receiving the described indication that described the second operating system sends after handling described data;
The 4th obtains the unit, is used for according to described indication, obtains the described data after described the second operating system is processed.
Another embodiment of the present invention also provides a kind of electronic equipment, and it can be mobile phone, computing machine (such as notebook computer, desktop computer, all-in-one etc.), PAD etc. that this electronic equipment has.This electronic equipment comprises:
The second operating system;
Operate in the first operating system on described the second operating system;
Corresponding to the first display unit of described the first operating system, be used for receiving described the first operating system output the first display and show; And
Corresponding to the second display unit of described the second operating system, be used for receiving described the second operating system output the second display and show.
Take portable computer (such as notebook computer) with two housings as example, the inside surface of a housing is installed the first display unit therein, at the outside surface of this housing the second display unit is installed.Like this, the display of the first operating system output shows by the first display unit, and the display of the second operating system output is then shown by the second display unit.
In the present embodiment, described the first operating system comprises:
First obtains the unit, is used for obtaining described the first operating system tendency to develop and transports to the data that described the second operating system is processed;
The first converting unit is used for according to the virtual address of the first operating system and the first mapping relations between the physical address, determines the first physical address under corresponding described the first operating system of described the first virtual address;
The first transmitting element is used for the information of described the first physical address is sent to described the second operating system;
Described the second operating system comprises:
The first receiving element is for the information of described the first physical address that receives described the first operating system transmission;
The second converting unit is used for according to the physical address of the first operating system and the second mapping relations between the physical address in the second operating system, is described the second physical address with described the first physical address translations;
The 3rd obtains the unit, is used for obtaining described the second physical address, under described the second operating system data corresponding to described the second physical address are processed.
Described the second operating system also is used for described data are processed, and therefore described the second operating system also comprises:
Data processing unit is used for after obtaining described the second physical address, and application second virtual address corresponding with described the second physical address under described the second operating system, and according to described the second virtual address determined pending described data and processed.
In the present embodiment, after processing said data is complete, described the second operating system also will notify described the first operating system data to be disposed, and therefore, described the second operating system also comprises:
The second transmitting element is used for sending an indication to described the first operating system after handling described data;
Described the first operating system also comprises:
The second receiving element is used for receiving the described indication that described the second operating system sends after handling described data;
The 4th obtains the unit, is used for according to described indication, obtains the described data after described the second operating system is processed.
Many functional parts described in this instructions all are called as module, in order to emphasize more especially the independence of its implementation.
In the embodiment of the invention, module can realize with software, in order to carried out by various types of processors.For instance, the executable code module of a sign can comprise one or more physics or the logical block of computer instruction, and for instance, it can be built as object, process or function.However, the executable code of institute's identification module need not to be physically located in together, but can comprise the different instruction on being stored in the coordination not, when combining on these command logics, and its composition module and realize the regulation purpose of this module.
In fact, executable code module can be individual instructions or many instructions, and even can be distributed on a plurality of different code segments, be distributed in the middle of the distinct program, and cross over a plurality of memory devices and distribute.Similarly, service data can be identified in module, and can realize and be organized in the data structure of any suitable type according to any suitable form.Described service data can be used as the individual data collection and is collected, and perhaps can be distributed on the diverse location (to be included on the different storage device), and can only be present on system or the network as electronic signal at least in part.
When module can utilize software to realize, consider the level of existing hardware technique, so can be with the module of software realization, in the situation that do not consider cost, those skilled in the art can build corresponding hardware circuit and realize corresponding function, and described hardware circuit comprises conventional ultra-large integrated (VLSI) circuit or gate array and the existing semiconductor such as logic chip, transistor or other discrete element.Module can also be used programmable hardware device, realizations such as field programmable gate array, programmable logic array, programmable logic device.
The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (15)
1. the method for a data transmission is applied to an electronic equipment, and described electronic equipment includes the second operating system and the first operating system that operates on described the second operating system; It is characterized in that, described method comprises:
Obtain described the first operating system tendency to develop and transport to the data that described the second operating system is processed;
Obtain first virtual address of described data in described the first operating system;
According to mapping relations, described the first virtual address map is become the second physical address in the second operating system;
Obtain described the second physical address, under described the second operating system, data corresponding to described the second physical address are processed.
2. the method for claim 1 is characterized in that, and is described according to mapping relations, and described the first virtual address map is become the second physical address in the second operating system, comprising:
According to the first mapping relations between the virtual address in the first operating system and the physical address, determine the first physical address under corresponding described the first operating system of described the first virtual address;
According to the second mapping relations between the physical address in the physical address in the first operating system and the second operating system, be described the second physical address with described the first physical address translations.
3. the method for claim 1 is characterized in that,
After obtaining described the second physical address, described method also comprises:
Application second virtual address corresponding with described the second physical address under described the second operating system, and according to described the second virtual address determined pending described data and processed.
4. method as claimed in claim 3 is characterized in that, also comprises:
Receive described the second operating system and handling the indication of returning after the described data;
According to described indication, obtain the described data after described the second operating system is processed.
5. the device of a data transmission is applied to an electronic equipment, and described electronic equipment includes the second operating system and the first operating system that operates on described the second operating system; It is characterized in that, described device comprises:
First obtains the unit, is used for obtaining described the first operating system tendency to develop and transports to the data that described the second operating system is processed;
Second obtains the unit, is used for obtaining described data in the first virtual address of described the first operating system;
Map unit is used for according to mapping relations, and described the first virtual address map is become the second physical address in the second operating system;
The 3rd obtains the unit, is used for obtaining described the second physical address, under described the second operating system data corresponding to described the second physical address are processed.
6. device as claimed in claim 5 is characterized in that, described map unit comprises:
The first converting unit is used for according to the virtual address of the first operating system and the first mapping relations between the physical address, determines the first physical address under corresponding described the first operating system of described the first virtual address;
The second converting unit is used for according to the physical address of the first operating system and the second mapping relations between the physical address in the second operating system, is described the second physical address with described the first physical address translations.
7. device as claimed in claim 5 is characterized in that, also comprises:
Data processing unit is used for after obtaining described the second physical address, and application second virtual address corresponding with described the second physical address under described the second operating system, and according to described the second virtual address determined pending described data and processed.
8. device as claimed in claim 7 is characterized in that, also comprises:
Receiving element is used for receiving described the second operating system and is handling the indication of returning after the described data;
The 4th obtains the unit, is used for according to described indication, obtains the described data after described the second operating system is processed.
9. electronic equipment, described electronic equipment include the second operating system and operate in the first operating system on described the second operating system; It is characterized in that, also comprise: such as the device of each described data transmission of claim 5 to 8.
10. electronic equipment, described electronic equipment include the second operating system and operate in the first operating system on described the second operating system; It is characterized in that,
Described the first operating system comprises:
First obtains the unit, is used for obtaining described the first operating system tendency to develop and transports to the data that described the second operating system is processed;
The first converting unit is used for according to the virtual address of the first operating system and the first mapping relations between the physical address, determines the first physical address under corresponding described the first operating system of described the first virtual address;
The first transmitting element is used for the information of described the first physical address is sent to described the second operating system;
Described the second operating system comprises:
The first receiving element is for the information of described the first physical address that receives described the first operating system transmission;
The second converting unit is used for according to the physical address of the first operating system and the second mapping relations between the physical address in the second operating system, is described the second physical address with described the first physical address translations;
The 3rd obtains the unit, is used for obtaining described the second physical address, under described the second operating system data corresponding to described the second physical address are processed.
11. electronic equipment as claimed in claim 10, described the second operating system also comprises:
Data processing unit is used for after obtaining described the second physical address, and application second virtual address corresponding with described the second physical address under described the second operating system, and according to described the second virtual address determined pending described data and processed.
12. electronic equipment as claimed in claim 11 is characterized in that,
Described the second operating system also comprises:
The second transmitting element is used for sending an indication to described the first operating system after handling described data;
Described the first operating system also comprises:
The second receiving element is used for receiving the described indication that described the second operating system sends after handling described data;
The 4th obtains the unit, is used for according to described indication, obtains the described data after described the second operating system is processed.
13. an electronic equipment, described electronic equipment comprises:
The second operating system;
Operate in the first operating system on described the second operating system;
Corresponding to the first display unit of described the first operating system, be used for receiving described the first operating system output the first display and show; And
Corresponding to the second display unit of described the second operating system, be used for receiving described the second operating system output the second display and show;
Wherein, described the first operating system comprises:
First obtains the unit, is used for obtaining described the first operating system tendency to develop and transports to the data that described the second operating system is processed;
The first converting unit is used for according to the virtual address of the first operating system and the first mapping relations between the physical address, determines the first physical address under corresponding described the first operating system of described the first virtual address;
The first transmitting element is used for the information of described the first physical address is sent to described the second operating system;
Described the second operating system comprises:
The first receiving element is for the information of described the first physical address that receives described the first operating system transmission;
The second converting unit is used for according to the physical address of the first operating system and the second mapping relations between the physical address in the second operating system, is described the second physical address with described the first physical address translations;
The 3rd obtains the unit, is used for obtaining described the second physical address, under described the second operating system data corresponding to described the second physical address are processed.
14. electronic equipment as claimed in claim 13, described the second operating system also comprises:
Data processing unit is used for after obtaining described the second physical address, and application second virtual address corresponding with described the second physical address under described the second operating system, and according to described the second virtual address determined pending described data and processed.
15. electronic equipment as claimed in claim 14 is characterized in that,
Described the second operating system also comprises:
The second transmitting element is used for sending an indication to described the first operating system after handling described data;
Described the first operating system also comprises:
The second receiving element is used for receiving the described indication that described the second operating system sends after handling described data;
The 4th obtains the unit, is used for according to described indication, obtains the described data after described the second operating system is processed.
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