CN101354695B - Method, system and distributed apparatus of communication between processes - Google Patents
Method, system and distributed apparatus of communication between processes Download PDFInfo
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- CN101354695B CN101354695B CN2008102226416A CN200810222641A CN101354695B CN 101354695 B CN101354695 B CN 101354695B CN 2008102226416 A CN2008102226416 A CN 2008102226416A CN 200810222641 A CN200810222641 A CN 200810222641A CN 101354695 B CN101354695 B CN 101354695B
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Abstract
The invention provides an interprocess communication method, an interprocess communication system and interprocess communication distributed devices, wherein the method comprises the following steps: first role CPUs of various distributed devices are completely connected with each other to form a first layer of broadcast domains; the first role CPUs and various second role CPUs in each distributed device are completely connected with each other to form a second layer of broadcast domains of the various distributed devices; the various CPUs broadcast topology discovery messages in the broadcast domains where the CPUs are positioned and establish the topological connection relationships between the CPUs and adjacent CPUs by utilization of the topology discovery messages received; and the various CPUs perform interprocess communication by utilization of the topological connection relationships of the CPUs. The method reduces the number of occupied ports of the various CPUs, greatly reduces the topological connection information required for storage, and is suitable for topological management of interprocess communication of the distributed devices.
Description
Technical field
The present invention relates to the network communications technology, particularly a kind of method of interprocess communication, system and distributed apparatus.
Background technology
Interprocess communication (IPC, Inter-Process Communication) technology refers to the communication between inner each process of same CPU at first, but continuous development along with network technology, interprocess communication is developed gradually and is applied to distributed apparatus, distributed apparatus inside comprises control panel and a plurality of business board usually, all there is independent CPUs on each control panel and the business board, the interprocess communication of this moment refers to the communication between inner each process of different CPU of a distributed apparatus inside, but interprocess communication still is limited between each reciprocity process.
Fig. 1 is the interprocess communication topology diagram of a distributed apparatus inside in the prior art, as shown in Figure 1, the topology of existing interprocess communication is based on single layer network, for performance and the efficient that guarantees interprocess communication, need to be full connection between inner each CPU of distributed apparatus, be all to set up between any CPU can one to jump to reach, each node among Fig. 1 characterizes each CPU on this distributed apparatus internal control plate and the business board.Utilize this topology can realize the interprocess communication of a distributed apparatus inside, yet, continuous development along with network technology, simultaneous distributed apparatus increases gradually in the network, the interprocess communication of striding distributed apparatus is day by day by demand, but, do not have the mode of communicating by letter between a kind of implementation process at present and be applicable to the interprocess communication of striding distributed apparatus, if directly adopt the full ways of connecting of each CPU, distributed apparatus more for a long time in network, the control panel of each distributed apparatus does not have abundant port with business board and realizes that the complete of all CPU is connected in a plurality of distributed apparatus, and, each CPU must store the topological link information of all CPU in each distributed apparatus, has brought great inconvenience obviously for the Topology Management of interprocess communication.
Summary of the invention
In view of this, the invention provides a kind of method, system and distributed apparatus of interprocess communication, be suitable for striding the IPC Topology Management of distributed apparatus.
A kind of method of interprocess communication is applied to comprise the system of at least two distributed apparatus, and this method comprises:
Between the first role CPU of A, each distributed apparatus by connecting and composing the ground floor broadcast domain entirely, in each distributed apparatus, between the first role CPU and each the second role CPU by connecting and composing the second layer broadcast domain of each distributed apparatus entirely;
B, each CPU broadcast topology in the broadcast domain at its place is found message, and utilizes the Topology Discovery message that receives to set up topological connection relation with its neighbours CPU;
C, each CPU utilize the topological connection relation of self setting up to carry out interprocess communication.
A kind of distributed apparatus, this distributed apparatus comprises: the first role CPU and the second role CPU; Wherein, between the described first role CPU and each the second role CPU by connecting and composing the second layer broadcast domain of this distributed apparatus entirely, with the first role CPU of other distributed apparatus by connecting and composing the ground floor broadcast domain entirely;
The described first role CPU and the second role CPU, be used for finding message at the broadcast domain broadcast topology at self place, and utilize the Topology Discovery message receive to set up topological connection relation with its neighbours CPU, utilize the topological connection relation and its neighbours CPU that self set up to carry out interprocess communication.
A kind of system of interprocess communication comprises at least two above-mentioned distributed apparatus.
As can be seen from the above technical solutions, in method provided by the invention, system and equipment, with between the first role CPU of each distributed apparatus by connecting and composing the ground floor broadcast domain entirely, in each distributed apparatus, between the first role CPU and each the second role CPU by connecting and composing the second layer broadcast domain of each distributed apparatus entirely; Each CPU broadcast topology in the broadcast domain at its place is found message, and utilizes the Topology Discovery message that receives to set up topological connection relation with its neighbours CPU; Each CPU utilizes the topological connection relation that self connects to carry out interprocess communication.This method need not all to set up full the connection between all CPU of each distributed apparatus, but only connect entirely in each distributed apparatus inside, each distributed apparatus can realize striding the interprocess communication of distributed apparatus by the first role CPU that belongs to the ground floor broadcast domain, reduced the port number that takies each CPU., and significantly reduced the topological link information that needs storage, be suitable for striding the interprocess communication Topology Management of distributed apparatus.
Description of drawings
Fig. 1 is the IPC topology diagram of a distributed apparatus inside in the prior art;
The method flow diagram that Fig. 2 provides for the embodiment of the invention;
The topological connection diagram that Fig. 3 provides for the embodiment of the invention;
The structural drawing of the distributed apparatus that Fig. 4 provides for the embodiment of the invention;
The structural drawing of the first role CPU and the second role CPU in the distributed apparatus that Fig. 5 provides for the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Method provided by the invention is applied to comprise the system of at least two distributed apparatus, this method mainly comprises: between the first role CPU of each distributed apparatus by connecting and composing the ground floor broadcast domain entirely, in each distributed apparatus, between the first role CPU and each the second role CPU by connecting and composing the second layer broadcast domain of each distributed apparatus entirely; Each CPU broadcast topology in the broadcast domain at its place is found message, and utilizes the Topology Discovery message that receives to set up topological connection relation with its neighbours CPU; Each CPU utilizes the topological connection relation of self setting up to carry out interprocess communication.
Below in conjunction with specific embodiment said method is described in detail.The method flow diagram that Fig. 2 provides for the embodiment of the invention is that example is described with three distributed apparatus among this embodiment, wherein comprises a control panel CPU and three business board CPU in each distributed apparatus.As shown in Figure 2, this method may further comprise the steps:
Step 201: each CPU in three distributed apparatus is carried out role's election, elect each control panel CPU as role A, the business board CPU that elects each distributed apparatus is as role B; Between all role A by connecting and composing the ground floor broadcast domain entirely, between all the role B in each role A and its place distributed apparatus by connecting and composing the second layer broadcast domain of each distributed apparatus entirely.
The role of this step election is will elect in the CPU of all distributed apparatus as the CPU of role A being used for the constituting ground floor broadcast domain, and elects CPU as role B to be used for constituting second layer broadcast domain.Can be with the control panel CPU in each distributed apparatus as role A, the business board CPU in the distributed apparatus is as role B.
Carry out the role when electing, can adopt following dual mode:
The mode of the static election of the first, i.e. craft in advance is configured the role of each CPU of distributed apparatus.For example, be configured according to physical location in advance, distributed apparatus is when dispatching from the factory, fixed allocation has been got well the slot number of control panel and business board, can pre-configured each slot number and the role between binding relationship, make the CPU that inserts the control panel slot as role A, the CPU that inserts the business board slot is as role B; Perhaps, directly the control panel CPU of distributed apparatus is issued the control command of assigned role A, the business board CPU of distributed apparatus is issued the control command of assigned role B.
It two is to adopt the dynamically mode of election according to predetermined strategy, for example, each CPU in each distributed apparatus sends the CPU MAC information of self in this distributed apparatus, because the common CPU MAC Address maximum of control panel CPU in distributed apparatus, the CPU MAC of other CPU that each CPU will receive and the CPU MAC of self compare, if the CPU MAC that receives is bigger than the CPU MAC of self, then be provided with certainly as role B, if all CPU MAC that receive the CPU MAC than self are little, then be provided with certainly as role A, finally elect CPU MAC Address maximum as role A, other CPU is as role B.Certainly, if the CPU MAC Address minimum of control panel CPU in the distributed apparatus, then can elect CPU MAC Address minimum as role A.In addition, also can in distributed apparatus, send the control panel ID at self place or the mode of business board ID is carried out role's dynamic election, can adopt different strategies according to concrete mode by each CPU.
When carrying out network struction, carry out the topology that forms after this step and connect as shown in Figure 3, among the figure, solid node identification role A, hollow node identification role B.The control panel CPU1, the control panel CPU2 that comprise respectively in three distributed apparatus are connected as role A entirely with control panel CPU3, promptly guarantee arbitrarily between the two can one to jump to reach, thereby constitute the ground floor broadcast domain.Usually, a distributed apparatus constitutes a second layer broadcast domain, promptly in each distributed apparatus, as connecting entirely between the control panel CPU of role A and the business board CPU as role B, thereby constitute the second layer broadcast domain of each distributed apparatus respectively, have three second layer broadcast domains among Fig. 3.For example, connect and compose the second layer broadcast domain of distributed apparatus 1 between the control panel CPU1 in the distributed apparatus 1, business board CPU11, business board CPU12 and the business board CPU13 entirely.
Step 202: the CPU broadcast topology in the broadcast domain at its place that respectively is in running status is found message, and the topological link information of utilizing the Topology Discovery message receive to store its neighbours CPU, adopt the mode of three-way handshake to set up topological connection relation with its neighbours CPU.
In this step, when belonging to the ground floor broadcast domain as the control panel CPU of role A in each distributed apparatus, the second layer broadcast domain that also belongs to its place distributed apparatus, therefore, as the CPU of role A the second layer broadcast domain of the distributed apparatus at ground floor broadcast domain and its place all broadcast topology find message.Owing to only belong to the second layer broadcast domain of its place distributed apparatus as the business board CPU of role B, therefore, as the CPU of role B only in the second layer broadcast domain of its place distributed apparatus broadcast topology find message.
Wherein, can comprise identification information and the Role Information of self in the Topology Discovery message of each CPU broadcasting, receive the Topology Discovery message that other CPU sends after, obtain identification information and Role Information wherein and be stored as list item in the topology information table.Wherein, identification information can be the slot number at CPU MAC information, control panel ID or business board ID or place etc.
After each CPU received the Topology Discovery message that neighbours CPU sends, mode and this neighbours CPU by three-way handshake set up topological connection relation; If three-way handshake process failure and set up topological connection relation with this neighbours CPU is then with the list item deletion of this neighbours CPU correspondence in the topology information table.
Topology Discovery message described in this step can be Active probe messages, heartbeat message etc.
Through after this step, in a distributed apparatus, all set up topological connection relation between the CPU arbitrarily, also all set up topological connection relation between the control panel CPU of each distributed apparatus mutually; There is not direct topological connection relation but be between the business board CPU of different distributions formula equipment, but connects by the control panel CPU that self connected.
Step 203: the process of each CPU can be utilized between the process of the topological connection relation of foundation and other CPU in the system and communicate.
After foundation finished through step 202 topological connection relation, each CPU just can set up according to the topological connection relation of setting up and transmit, and the process of each CPU just can utilize transmitting of foundation to communicate.Set up according to topological connection relation as for how that to transmit not be the content that the present invention is concerned about, can adopt prior art, do not repeat them here.
Stride distributed apparatus if desired and carry out interprocess communication, then can transmit communication by the control panel CPU as role A in two distributed apparatus.For example, the topological connection relation of each CPU and its neighbours CPU as shown in Figure 3, if the process of business board CPU11 and control panel CPU2 need communicate, business board CPU11 can inquire about transmitting of self, the message that will transmit sends to the control panel CPU1 that has topological connection relation with it, and control panel CPU1 gives this forwards the control panel CPU2 that has topological connection relation with it.Transmitting of control panel CPU2 inquiry self, the message that will transmit sends to control panel CPU1, by control panel CPU1 this forwards is given to have the business board CPU11 of topological connection relation with it, thereby has realized striding the interprocess communication of distributed apparatus.The message of this transmission can be signaling message, also can be data-message etc.
Step 204: in the process of each CPU operation, each CPU can find message according to broadcast topology in the broadcast domain at its place of the default time interval, safeguards the topological connection relation of foundation.
In this step, when each CPU is in running status, can find message according to broadcast topology in the broadcast domain at its place of the default time interval.After receiving the Topology Discovery message of neighbours CPU transmission, topology information table according to the identification information that comprises in this Topology Discovery message, Role Information and self storage, judge whether to have set up topological connection relation with this neighbours CPU, if had the list item that comprises this identification information and Role Information in the topology information table of self storing, the topological connection relation of having set up with this neighbours CPU then is described, continues the topological connection relation of maintenance and this neighbours CPU; If do not have the list item that comprises this identification information and Role Information in the topology information table of self storing, the topological connection relation of setting up as yet with this neighbours CPU then is described, the mode of employing three-way handshake is set up the topological connection relation with this neighbours CPU.If in the time threshold of setting, do not receive the Topology Discovery message of certain neighbours CPU, illustrate that this neighbours CPU is in non-operating state or has removed, then removes the topological connection relation with this neighbours CPU from this topological structure.Removed between the CPU of topological connection relation and can not carry out interprocess communication.
More than be the description that method provided by the present invention is carried out, below system provided by the present invention and distributed apparatus be described in detail.System provided by the present invention comprises at least two distributed apparatus, between the first role CPU of each distributed apparatus by connecting and composing the ground floor broadcast domain entirely, in each distributed apparatus, between the first role CPU and each the second role CPU by connecting and composing the second layer broadcast domain of each distributed apparatus entirely.Wherein the structure of each distributed apparatus can be as shown in Figure 4, and this distributed apparatus can comprise: the first role CPU and the second role CPU, wherein, the second role CPU can be for one or more.
The first role CPU and the second role CPU, be used for finding message at the broadcast domain broadcast topology at self place, and utilize the Topology Discovery message receive to set up topological connection relation with its neighbours CPU, utilize the topological connection relation and its neighbours CPU that self set up to carry out interprocess communication.
Wherein, the first role CPU in first broadcast domain at its place and second broadcast domain all broadcast topology find message, the second role CPU only in second broadcast domain at its place broadcast topology find message.
Particularly, the structure of the first role CPU and the second role CPU can comprise as shown in Figure 5: the role elects module 510, message broadcast module 520, message receiver module 530, connection processing module 540 and interprocess communication module 550.
The role elects module 510, is used for the physical location according to each each CPU of distributed apparatus, and the control panel CPU of each distributed apparatus of static configuration is that the first role CPU, business board CPU are the second role CPU; Perhaps, the control panel CPU according to each distributed apparatus of predetermined strategy choice of dynamical is that the first role CPU, business board CPU are the second role CPU.
The role elects module 510 carrying out the role when electing, and the static state election that provided in the method step 201 or the dynamic mode of election can be provided.
Wherein, by connecting and composing first broadcast domain entirely, all second roles of first role and its place distributed apparatus are by connecting and composing second broadcast domain entirely between first role.
This Topology Discovery message can be Active probe messages, heartbeat message etc.
Wherein, connection processing module 540 can specifically comprise: the first judgement submodule 541 is set up submodule 542 with being connected.
Connect and set up submodule 542, after being used to receive the foundation notice, identification information and Role Information that this foundation notice is comprised are stored in the topology information table, and set up topological connection relation between the neighbours CPU corresponding with this identification information by the mode of three-way handshake; After receiving the maintenance notice that comprises identification information, safeguard the topological connection relation between the neighbours CPU corresponding with this identification information.
Connect and set up submodule 542, also be used for overtime and do not receive the identification information of the neighbours CPU of this overtime timer correspondence as yet at overtime timer 543, identification information and the Role Information of this neighbours CPU in the then topological connection relation between dismounting and this neighbours CPU, and the deletion topology information table.
By above description as can be seen, in method provided by the invention, system and equipment, with between the first role CPU of each distributed apparatus by connecting and composing the ground floor broadcast domain entirely, in each distributed apparatus, between the first role CPU and each the second role CPU by connecting and composing the second layer broadcast domain of each distributed apparatus entirely; Each CPU broadcast topology in the broadcast domain at its place is found message, and utilizes the Topology Discovery message that receives to set up topological connection relation with its neighbours CPU; Each CPU utilizes the topological connection relation that self connects to carry out interprocess communication.This method need not all to set up full the connection between all CPU of each distributed apparatus, but only connect entirely in each distributed apparatus inside, each distributed apparatus can realize striding the interprocess communication of distributed apparatus by the first role CPU that belongs to the ground floor broadcast domain, the port that takies each CPU is few, and significantly reduced the topological link information that needs storage, be suitable for striding the interprocess communication Topology Management of distributed apparatus.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. the method for an interprocess communication is characterized in that, is applied to comprise the system of at least two distributed apparatus, and this method comprises:
Between the first role CPU of A, each distributed apparatus by connecting and composing the ground floor broadcast domain entirely, in each distributed apparatus, between the first role CPU and each the second role CPU by connecting and composing the second layer broadcast domain of each distributed apparatus entirely;
B, each CPU broadcast topology in the broadcast domain at its place is found message, and utilizes the Topology Discovery message that receives to set up topological connection relation with its neighbours CPU;
C, each CPU utilize the topological connection relation of self setting up to carry out interprocess communication.
2. method according to claim 1, it is characterized in that, further comprised before described steps A: according to the physical location of each CPU in each distributed apparatus, the control panel CPU of each distributed apparatus of static configuration is that the first role CPU, business board CPU are the second role CPU; Perhaps,
Control panel CPU according to each distributed apparatus of predetermined strategy choice of dynamical is that the first role CPU, business board CPU are the second role CPU.
3. method according to claim 1, it is characterized in that, described step B is specially: each CPU broadcasts the Topology Discovery message that comprises self identification information and Role Information according to the default time interval in the broadcast domain at its place, after receiving Topology Discovery message from neighbours CPU, the identification information and the Role Information that comprise in this Topology Discovery message are stored in the topology information table, and adopt the mode of three-way handshake to set up topological connection relation with this neighbours CPU.
4. method according to claim 3, it is characterized in that, after the described Topology Discovery message that receives from neighbours CPU, also comprise: judge in the topology information table of self storing whether stored identification information and the Role Information that comprises in the described Topology Discovery message, if not, continue to carry out and described the identification information that comprises in this Topology Discovery message and Role Information to be stored in step in the topology information table; If, then keep the topological connection relation with described neighbours CPU, do not carry out described the identification information that comprises in this Topology Discovery message and Role Information are stored in step in the topology information table.
5. according to claim 3 or 4 described methods, it is characterized in that, after the topological connection relation of described foundation and this neighbours CPU, if in default time threshold, do not receive the Topology Discovery message of this neighbours CPU, identification information and the Role Information of this neighbours CPU in the then topological connection relation of dismounting and this neighbours CPU, and the deletion topology information table.
6. a distributed apparatus is characterized in that, this distributed apparatus comprises: the first role CPU and the second role CPU; Wherein, between the described first role CPU and each the second role CPU by connecting and composing the second layer broadcast domain of this distributed apparatus entirely, with the first role CPU of other distributed apparatus by connecting and composing the ground floor broadcast domain entirely;
The described first role CPU and the second role CPU, be used for finding message at the broadcast domain broadcast topology at self place, and utilize the Topology Discovery message receive to set up topological connection relation with its neighbours CPU, utilize the topological connection relation and its neighbours CPU that self set up to carry out interprocess communication.
7. distributed apparatus according to claim 6 is characterized in that, the described first role CPU and the second role CPU comprise: the role elects module, message broadcast module, message receiver module, connection processing module and interprocess communication module;
Described role elects module, is used for the physical location according to each each CPU of distributed apparatus, and the control panel CPU of each distributed apparatus of static configuration is that the first role CPU, business board CPU are the second role CPU; Perhaps, the control panel CPU according to each distributed apparatus of predetermined strategy choice of dynamical is that the first role CPU, business board CPU are the second role CPU;
Described message broadcast module was used for according to the default time interval, and broadcasting comprises the Topology Discovery message of its place control panel CPU or business board CPU identification information and Role Information in the broadcast domain at its place;
Described message receiver module is used to receive the Topology Discovery message from neighbours CPU, and offers described connection processing module;
Described connection processing module, identification information and Role Information that the Topology Discovery message that is used for receiving comprises are stored in the topology information table, and adopt the mode of three-way handshake to set up topological connection relation with this neighbours CPU;
Described interprocess communication module, the topological connection relation that is used to utilize described connection processing module to set up carries out interprocess communication.
8. distributed apparatus according to claim 7 is characterized in that, described connection processing module comprises: the first judgement submodule is set up submodule with being connected;
Described first judges submodule, be used for judging that described connection sets up the topology information table of submodule storage and whether stored identification information and the Role Information that comprises in the Topology Discovery message that receives, if not, then set up submodule and send the foundation notice that comprises this identification information and Role Information to described connection, if then set up submodule and send the maintenance notice that comprises this identification information to described connection;
Submodule is set up in described connection, after being used to receive described foundation notice, identification information and Role Information that described foundation notice is comprised are stored in the topology information table, and set up topological connection relation between the neighbours CPU corresponding with this identification information by the mode of three-way handshake; After receiving the maintenance notice that comprises identification information, safeguard the topological connection relation between the neighbours CPU corresponding with this identification information.
9. distributed apparatus according to claim 8 is characterized in that, described connection processing module also comprises: at the overtime timer that each neighbours CPU is provided with, be used for setting up in described connection and start when submodule receives described foundation notice or safeguards notice;
Submodule is set up in described connection, also be used for overtime and do not receive the identification information of the neighbours CPU of described overtime timer correspondence as yet at described overtime timer, identification information and the Role Information of this neighbours CPU in the then topological connection relation between dismounting and this neighbours CPU, and the deletion topology information table.
10. the system of an interprocess communication is characterized in that, comprises at least two distributed apparatus as claimed in claim 6.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101651571B (en) * | 2009-09-21 | 2011-09-28 | 杭州华三通信技术有限公司 | Analytic method and equipment for ports |
| CN103227733B (en) * | 2013-04-27 | 2016-12-28 | 神州数码网络(北京)有限公司 | A kind of topology discovery method and system |
| CN104158747B (en) * | 2013-05-14 | 2019-09-24 | 中兴通讯股份有限公司 | Method for discovering network topology and system |
| CN105426260B (en) * | 2015-10-30 | 2018-08-21 | 北京航天自动控制研究所 | A kind of transparent interprocess communication system and method for supporting distributed system |
| ES2677729B1 (en) * | 2017-01-05 | 2019-09-16 | De La Cruz Jose Manuel Sanchez | PERFECTED ROAD PROTECTION BARRIER |
| CN108574587B (en) * | 2017-03-09 | 2020-07-24 | 华为技术有限公司 | Capacity updating method and device for distributed equipment |
| CN107239352B (en) * | 2017-05-31 | 2019-11-29 | 北京科技大学 | The communication optimization method and its system of a kind of dynamics Monte Carlo Parallel Simulation |
| CN109918215B (en) * | 2019-03-05 | 2023-06-30 | 上海联影医疗科技股份有限公司 | Process communication method, system, terminal and storage medium |
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Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Patentee after: Xinhua three Technology Co., Ltd. Address before: 310053 Hangzhou hi tech Industrial Development Zone, Zhejiang province science and Technology Industrial Park, No. 310 and No. six road, HUAWEI, Hangzhou production base Patentee before: Huasan Communication Technology Co., Ltd. |
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