CN101794237A - Computer and method for realizing universal display - Google Patents
Computer and method for realizing universal display Download PDFInfo
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- CN101794237A CN101794237A CN200910077888A CN200910077888A CN101794237A CN 101794237 A CN101794237 A CN 101794237A CN 200910077888 A CN200910077888 A CN 200910077888A CN 200910077888 A CN200910077888 A CN 200910077888A CN 101794237 A CN101794237 A CN 101794237A
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Abstract
The invention provides a computer and a method for realizing universal display. The computer comprises a virtual machine manager, a second guest operation system, a shared video memory unit, a servo operation system unit and a first guest operation system, wherein the virtual machine manager is used for mapping an address; the second guest operation system operates on the virtual machine manager; the shared video memory unit is used for storing data required for display and the information of the second guest operating system in need of a simulated video card; the servo operation system unit operates on the virtual machine manager and is used for generating a command when monitoring the information of the second guest operating system in need of the simulated video card; and the first guest operating system operates on the virtual machine manager and is used for acquiring the command, reading data from the shared video memory unit according to the command and displaying the data through a physical video card. By using the invention, a guest does not need to directly operate or switch the physical video card, thereby greatly shortening the switching time between the guest operating systems.
Description
Technical field
The present invention relates to virtual machine technique, be meant a kind of computing machine and method that realizes universal display especially.
Background technology
The generation of virtual machine, make a plurality of operating systems on same computing machine need share a video card, in general implementation, have only master operating system (Sevice OS) can visit real video card, and the video card that client operating system (GUEST OS) is visited is to come out by the unit on the Service OS is virtual; Because the video card of Guest OS simulates out by Service OS, so it does not possess two dimension (2D), three-dimensional accelerating performances such as (3D), display performance is poor.
In order to address this problem, the scheme that video card DHA separates with video memory has been proposed, as shown in Figure 1, GUEST OS for the high display characteristic of needs can utilize video card hardware directly to visit (DHA like this, Direct Hardware Access), allow it can obtain real video card equipment, make the video card recovering state of SERVICE OS to true video card, virtual machine for a plurality of GUEST OS, because other GUEST OS is still come out by unit (Device Model) simulation of Service OS, so can be divided into two kinds for GUEST OS: directly the GUEST OS that shows (is referred to as the GUEST OS (being referred to as SGOS) that DGOS and simulation show.Each DGOS is when front end shows, when if SGOS wants to switch to the front end demonstration, then must cut off earlier and be in the visit of the DGOS on foreground true video card, preserve this display card register value at that time, allow the directly true video card of visit of Service OS, the Device Model of relief Service OS shows SGOS.If instead SGOS shows on the foreground, and DGOS be when must switch to the foreground, must cut off earlier be in the visit of the SGOS on foreground to true video card, preserves this display card register value at that time, and the video card recovering state of DGOS to true video card.
The inventor is in realizing process of the present invention, find that there are the following problems at least in the prior art: in dummy machine system, when DGOS when using independent video card, if another Guest OS need use the simulation video card, SOS needs the demonstration authority of the current DGOS that is using is discharged, by SOS another Guest OS is simulated video card, like this, this just causes the switching between different Guest OS to show very consuming time, and when some switching is frequent, because the processing to data in the register not exclusively can cause computing machine to show unusually in each handoff procedure.
Summary of the invention
The purpose of this invention is to provide a kind of computing machine and method that realizes universal display, be used for, because the frequent switching between the different Guest OS, cause the computing machine procedure for displaying slowly even unusual defective occurs near prior art.
For solving the problems of the technologies described above, the invention provides a kind of computing machine of realizing universal display, described computing machine comprises:
Virtual machine manager is used for mapping address;
Second client operating system operates on the described virtual machine manager; Include a shared video memory unit, being used to deposit needed data of demonstration and described second client operating system has needs to use the information of simulation video card;
The servo operation unit operates on the described virtual machine manager, is used for producing an order when listening to described second client operating system when having needs to use the information of described simulation video card;
First client operating system operates on the described virtual machine manager, is used to obtain described order, according to described order reading of data from described shared video memory unit, and the physics video card of described data by described computing machine is shown.
Preferably, described virtual machine manager also comprises:
Dispensing unit is used for the machine address of described second client operating system is become the physical address that described first client operating system is supported.
Preferably, also comprise:
Initialization unit is used for described shared video memory unit is become the discernible linear address of a video data processing unit in the physical address translations of described first client operating system.
Preferably, comprise in described first client operating system:
The video data processing unit is used to get access to described order, according to described order, finds described data and send to described physics video card according to described linear address to show in described second client operating system.
Preferably, described video data processing unit also comprises:
Rectangle redraws the unit, is used for according to described order, calculates the position and the size of the rectangular window that need redraw;
Described size is no more than the size of described computer screen.
Preferably, described video data processing unit also comprises:
The command analysis module is used for described command analysis is redrawn a kind of of screen event at least three kinds:
Displaying contents changes;
The size of display window changes;
The resolution that shows changes;
And described command analysis module triggers described rectangle and redraws the unit according to any one described screen event that redraws.
For solving the problems of the technologies described above, the present invention also provides a kind of display packing, be applied to include at least the computing machine of a servo operation, first client operating system, second client operating system and physics video card, when described first client operating system had the control of described physics video card, described first client operating system was carried out following steps:
Get access to the order from described servo operation, described order is that described servo operation listens to the order that produces when described second client operating system has the demand that needs use simulation video card;
According to described order reading of data from the shared display memory of described second client operating system management;
Described data are shown by described physics video card.
Preferably, described first client operating system gets access to the order from described servo operation, also comprises before:
Described second client operating system produces one and redraws incident, and the described incident of redrawing is sent to one of described second client operating system management share display memory, when described servo operation listen to described redraw incident after, give an order to described first client operating system according to the described incident that redraws.
Preferably, according to described order reading of data from the shared display memory of described second client operating system management, further comprise:
Calculate the position and the size of the rectangular window that need redraw; Described size is no more than the size of described computer screen;
Described command analysis is redrawn a kind of in the screen event at least three kinds:
Displaying contents changes;
The size of display window changes;
The resolution that shows changes.
Preferably, before the reading of data, also comprise from the shared display memory of described second client operating system management according to described order:
The physical address translations of described shared display memory is become discernible linear address in described first client operating system.
Embodiments of the invention have following beneficial effect, enjoy the high performance while at the client operating system that makes the foreground, owing to do not need the physics video card is carried out direct control and switching, can shorten dramatically the switching time between the client operating system.
Description of drawings
Fig. 1 is a prior art scheme synoptic diagram of the present invention;
Fig. 2 realizes the computer organization synoptic diagram of universal display for the present invention;
Fig. 3 is the theory diagram of the embodiment of the invention based on the universal display scheme of virtual technology;
Fig. 4 is an embodiment of the invention display unit principle of work schematic flow sheet;
Fig. 5 is an embodiment of the invention method flow synoptic diagram.
Embodiment
For making purpose of the present invention, technical characterictic and implementation result clearer, below in conjunction with the accompanying drawings and the specific embodiments technical scheme of the present invention is described in detail.Among the embodiment provided by the invention, between a plurality of different operating systems, provide a shared video memory zone, required data when refreshing video card to deposit.
Present embodiment provides a kind of computing machine of realizing universal display, and as shown in Figure 2, described computing machine comprises:
Second client operating system 300 operates on the described virtual machine manager; Include a shared video memory unit 301, being used to deposit needed data of demonstration and described second client operating system has needs to use the information of simulation video card;
First client operating system 200 operates on the described virtual machine manager, is used to obtain described order, according to described order reading of data from described shared video memory unit 301, and the physics video card 402 of described data by described computing machine is shown.
In the present embodiment, second client operating system 300 and first client operating system 200 all are GuestOS, can be the Guest OS of same or same type, for example all can be Windows (form) operating system of Microsoft; Can one of them be Windows operating system also, another be Linux.Servo operation unit 100 can be operating system, for example Windows, Linux or Unix or the like arbitrarily.
Use the technology that present embodiment provides, because all data that redraw all leave in the same shared video memory unit 301, should share video memory unit 301 all can visit in each operating system, share by the units corresponding module in the different operating system, when therefore between different Guest OS, switching at every turn, no longer need all data in the register to be handled in each handoff procedure, improved the travelling speed of computing machine.
Wherein, as shown in Figure 3, virtual machine manager 401 also comprises:
Dispensing unit 403 becomes the physical address that described first client operating system 200 is supported with the machine address of second client operating system 300.
Computing machine can also comprise:
Initialization unit 202 is used for described shared video memory unit 301 is become a video data processing unit 201 discernible linear address in the physical address translations of described first client operating system 200.This initialization unit 202 is usually in first client operating system 200.
Comprise in first client operating system 200:
Video data processing unit 201 is used to get access to described order, according to described order, finds described data and send to described physics video card 402 according to described linear address to show in described second client operating system 300.Because physics video card 402 is to be driven by a video card to manage, therefore in computing machine, the video card driving that in fact described data send in first client operating system 200 gets final product.
Video data processing unit 201 also comprises:
Rectangle redraws the unit, is used for according to described order, calculates the position and the size of the rectangular window that need redraw; Described size is no more than the size of described computer screen.
Video data processing unit 201 also comprises:
The command analysis module, be used for described command analysis is redrawn a kind of of screen event at least three kinds: displaying contents changes; The size of display window changes; The resolution that shows changes; And described command analysis module triggers described rectangle and redraws the unit according to any one described screen event that redraws.
The described virtual machine manager 401 that moves on the computing machine has carried a dispensing unit 403; Described dispensing unit 403 is used for when the shared video memory unit 301 that intercepts 100 pairs second client operating systems 300 in servo operation unit distributes and shines upon, and it can be the real machine map addresses of this shared video memory unit 301 physical address that first client operating system 200 is supported; And in the process of setting up described first client operating system 200 and second client operating system 300 on virtual machine manager 401, required some variablees that initial value is set, register value, storehouse etc. are configured.
Video data processing unit 201 also comprises:
The command analysis module is used for described command analysis is redrawn a kind of of screen event at least three kinds:
Displaying contents changes;
The size of display window changes;
The resolution that shows changes.
For preceding two any one that redraw in the screen event, servo operation unit 100 all can generate an order that redraws screen, and the size of the rectangle that this order meeting need redraw on screen sends video data processing unit 201 together to.Redraw screen event for last, servo operation unit 100 all can generate an order that redraws screen, this order should include new resolution at least, video data processing unit 201 upgrades current corresponding simulation display resolution according to these order needs, redraws the viewing area of whole second client operating system 300 then.
When a rectangle wait redraws,, at this time just need redraw rectangle to two and merge if another order that need redraw rectangle sends to video data processing unit 201 by the unit in the servo operation unit 100 101.The principle that merges is that two rectangles are replaced to a bigger rectangle, and any point in these two rectangles is included in this large rectangle.Therefore, video data processing unit 201 also comprises:
The rectangle merge cells, be used for existing first rectangle to wait for the process that redraws, when needs redraw second rectangle, described first rectangle, second rectangle are merged into the 3rd rectangle, described the 3rd rectangle comprise in described first rectangle and described second rectangle more arbitrarily.
In the operational process of computing machine, when a GUEST OS starts, servo operation unit 100 can be configured by 401 couples of these GUEST OS of virtual machine manager, the effect of the dispensing unit 403 in the virtual machine manager 401 is when the shared video memory unit 301 that intercepts 100 pairs second client operating systems 300 in servo operation unit distributes and shines upon, and this dispensing unit 403 can be the real machine map addresses of this shared video memory unit 301 physical address that first client operating system 200 is supported.Like this, second client operating system 300, the servo operation unit 100 and first client operating system 200 are shared this shared video memory unit 301.Whether video data processing unit 201 monitoring in first client operating system 200 have the order that need repaint screen, this order is from servo operation unit 100, repaint screen if desired, then from share video memory unit 301, read the data that need redraw, then this Refresh Data to physics video card 402.
As shown in Figure 4, described video data processing unit 201 principle of work in first client operating system 200, having comprised:
In step 501. initialization procedure, the physical address translations of shared video memory unit 301 corresponding first client operating systems 200 in second client operating system 300 is become video data processing unit 201 discernible linear address;
Obtain second client operating system 300 current display resolution and display window size then.
General causing redraws mainly redrawing screen event by three and triggering of screen:
1) content displayed changes;
2) variation of the size of display window;
3) change resolution of Xian Shiing.
The unit 101 of servo operation unit 100 is intercepting these three when redrawing screen event, sends order can for first client operating system 200.
Need to prove: exist first rectangle to wait in the process that redraws, when needs redraw second rectangle, described first rectangle, second rectangle are merged into the 3rd rectangle, described the 3rd rectangle comprise in described first rectangle and described second rectangle more arbitrarily.
Corresponding with the computing machine that is provided, present embodiment then provides a kind of display packing, be applied to include at least the computing machine of a servo operation 100, first client operating system 200, second client operating system 300 and physics video card, when described first client operating system 200 has the control of described physics video card, as shown in Figure 5, described first client operating system 200 is carried out following steps:
Step 601. gets access to the order from described servo operation 100, and described order is that described servo operation 100 listens to the order that produces when described second client operating system 300 has the demand that needs use simulation video card;
Step 602. is according to described order reading of data from the shared display memory of described second client operating system 300 management;
Step 603. shows described data by described physics video card 402.
Use the technology that present embodiment provides, because all data that redraw all leave in the same shared video memory unit 301, and share by the units corresponding module in the different operating system, when therefore between different Guest OS, switching at every turn, no longer need all data in the register to be handled in each handoff procedure, improved the travelling speed of computing machine.
Can further carry out perfect to the method that is provided; In this enforcement, first client operating system 200 gets access to the order from described servo operation 100, also comprise: described second client operating system 300 produces one and redraws incident before, and the described incident of redrawing is sent to the shared display memory of described second client operating system 300 management, when described servo operation 100 listen to described redraw incident after, give an order to described first client operating system 200 according to the described incident that redraws.
In this enforcement,, further comprise: the position and the size that calculate the rectangular window that need redraw according to described order reading of data from the shared display memory of described second client operating system 300 management; Described size is no more than the size of described computer screen;
Described command analysis is redrawn a kind of in the screen event at least three kinds: displaying contents changes; The size of display window changes; The resolution that shows changes.
And, existing first rectangle to wait in the process that redraws, when needs redraw second rectangle, described first rectangle, second rectangle are merged into the 3rd rectangle, described the 3rd rectangle comprise in described first rectangle and described second rectangle more arbitrarily.
In this enforcement, before the reading of data, also comprise from the shared display memory of described second client operating system 300 management according to described order: the physical address translations of described shared display memory is become discernible linear address in described first client operating system 200.
Use the technology that above embodiment provides, can allow the physics video card 402 of the direct access computer of a client operating system that is in the foreground, obtain to approach the performance and the various video card characteristic of local video card, strengthened characteristics such as for example 3D acceleration.Second client operating system 300 and first client operating system 200 among each embodiment all are Guest OS, can be the Guest OS of same or same type, for example all can be Windows (form) operating system of Microsoft; Can one of them be Windows operating system also, another be Linux.Servo operation unit 100 can be operating system, for example Windows, Linux or Unix or the like arbitrarily.
Embodiments of the invention have following beneficial effect, enjoy the high performance while at the client operating system that makes the foreground, owing to do not need the physics video card is carried out direct control and switching, can shorten dramatically the switching time between the client operating system.
Should be noted that above embodiment is only unrestricted in order to technical scheme of the present invention to be described, all parameter values can be according to the actual conditions adjustment, and in this rights protection scope.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the spiritual scope of technical solution of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. computing machine of realizing universal display, described computing machine comprises:
Virtual machine manager is used for mapping address;
Second client operating system operates on the described virtual machine manager; Include a shared video memory unit, being used to deposit needed data of demonstration and described second client operating system has needs to use the information of simulation video card;
The servo operation unit operates on the described virtual machine manager, is used for producing an order when listening to described second client operating system when having needs to use the information of described simulation video card;
First client operating system operates on the described virtual machine manager, is used to obtain described order, according to described order reading of data from described shared video memory unit, and the physics video card of described data by described computing machine is shown.
2. computing machine according to claim 1 is characterized in that, described virtual machine manager also comprises:
Dispensing unit is used for the machine address of described second client operating system is become the physical address that described first client operating system is supported.
3. computing machine according to claim 2 is characterized in that, also comprises:
Initialization unit is used for described shared video memory unit is become the discernible linear address of a video data processing unit in the physical address translations of described first client operating system.
4. computing machine according to claim 3 is characterized in that, comprises in described first client operating system:
The video data processing unit is used to get access to described order, according to described order, finds described data and send to described physics video card according to described linear address to show in described second client operating system.
5. computing machine according to claim 4 is characterized in that, described video data processing unit also comprises:
Rectangle redraws the unit, is used for according to described order, calculates the position and the size of the rectangular window that need redraw;
Described size is no more than the size of described computer screen.
6. computing machine according to claim 5 is characterized in that, described video data processing unit also comprises:
The command analysis module is used for described command analysis is redrawn a kind of of screen event at least three kinds:
Displaying contents changes;
The size of display window changes;
The resolution that shows changes;
And described command analysis module triggers described rectangle and redraws the unit according to any one described screen event that redraws.
7. display packing, be applied to include at least the computing machine of a servo operation, first client operating system, second client operating system and physics video card, when described first client operating system had the control of described physics video card, described first client operating system was carried out following steps:
Get access to the order from described servo operation, described order is that described servo operation listens to the order that produces when described second client operating system has the demand that needs use simulation video card;
According to described order reading of data from the shared display memory of described second client operating system management;
Described data are shown by described physics video card.
8. method according to claim 7 is characterized in that, described first client operating system gets access to the order from described servo operation, also comprises before:
Described second client operating system produces one and redraws incident, and the described incident of redrawing is sent to one of described second client operating system management share display memory, when described servo operation listen to described redraw incident after, give an order to described first client operating system according to the described incident that redraws.
9. method according to claim 8 is characterized in that, according to described order reading of data from the shared display memory of described second client operating system management, further comprises:
Calculate the position and the size of the rectangular window that need redraw; Described size is no more than the size of described computer screen;
Described command analysis is redrawn a kind of in the screen event at least three kinds:
Displaying contents changes;
The size of display window changes;
The resolution that shows changes.
10. method according to claim 7 is characterized in that, before the reading of data, also comprises from the shared display memory of described second client operating system management according to described order:
The physical address translations of described shared display memory is become discernible linear address in described first client operating system.
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| CN107479957A (en) * | 2017-08-07 | 2017-12-15 | 广州视源电子科技股份有限公司 | A kind of switching method of Multiple system, device, equipment and storage medium |
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| CN110134370A (en) * | 2018-02-08 | 2019-08-16 | 龙芯中科技术有限公司 | A kind of method, apparatus of graphic plotting, electronic equipment and storage medium |
| CN110134370B (en) * | 2018-02-08 | 2023-09-12 | 龙芯中科技术股份有限公司 | Graph drawing method and device, electronic equipment and storage medium |
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| CN101794237B (en) | 2014-12-31 |
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