CN108306926A - A kind of method for pushing and device of car networking device gateway business datum - Google Patents
A kind of method for pushing and device of car networking device gateway business datum Download PDFInfo
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- CN108306926A CN108306926A CN201711238132.8A CN201711238132A CN108306926A CN 108306926 A CN108306926 A CN 108306926A CN 201711238132 A CN201711238132 A CN 201711238132A CN 108306926 A CN108306926 A CN 108306926A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/55—Push-based network services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/29—Flow control; Congestion control using a combination of thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
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Abstract
An embodiment of the present invention provides a kind of method for pushing and device of car networking device gateway business datum, the method includes：Establish linking between car networking equipment and the data receiver thread；The business datum sent by the car networking equipment is received using the data receiver sets of threads；The business datum is sent to the data-pushing sets of threads by the Double buffer group mould；The business datum is pushed to by the distributed post using the data-pushing sets of threads and subscribes to message system, data receiver sets of threads is caused to occur shying group phenomena when access gateway establishes the link so as to avoid vehicle net equipment, furthermore, it also avoids during car networking equipment access gateway, some part occurs influencing whole flow process processing when delay jitter, more specifically, it also avoids realizing data exchange with lock between sets of threads, accelerate flow processing speed, and then improve the processing speed of single gateway, reduce the manufacturing cost of car networking.
Description
Technical field
The present invention relates to technical field of data transmission, more particularly to a kind of push of car networking device gateway business datum
Method and a kind of pusher of car networking device gateway business datum.
Background technology
Car networking (Internet of Vehicles) is the huge friendship being made of information such as vehicle location, speed and routes
Mutual network.By devices such as GPS, RFID, sensor, camera image processing, vehicle can complete itself environment and state letter
The acquisition of breath；By Internet technology, all vehicles can be by the various information Transmission Convergences of itself to central processing unit；It is logical
Cross computer technology, the information of these a large amount of vehicles can be analyzed and processed, to calculate different vehicle best route,
It reports without delay road conditions and arranges signal lamp cycle.
With the fast development of car networking, a large amount of car networking equipment cause prodigious pressure in access gateway, to gateway
Power, this is because gateway processes flow is typically first received and parsed through by the data transmitted by car networking equipment, then by data
It is forwarded to distributed post and subscribes to message system, if entire data transmission flow is completed using single thread, at any one
When link postpones, the processing speed of entire data transmission flow will be all influenced, and in a large amount of terminal device access gateway
When, although can by using LVS to gateway do cluster carry out it is extending transversely disperse the access pressure of single gateway, if
The processing speed of single gateway is not improved, still can not reduce number of clusters, and the cost for eventually leading to car networking is very high.
Invention content
In view of the above problems, it is proposed that the embodiment of the present invention overcoming the above problem or at least partly in order to provide one kind
A kind of method for pushing of the car networking device gateway business datum to solve the above problems and a kind of corresponding car networking device gateway
The pusher of business datum.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of push sides of car networking device gateway business datum
Method, which is characterized in that the gateway includes data receiver sets of threads, data-pushing sets of threads, and, Double buffer group mould is described
There is gateway coupled distributed post to subscribe to message system, and the data receiver sets of threads includes data receiver line
Journey, the method includes：
Establish linking between car networking equipment and the data receiver thread；
The business datum sent by the car networking equipment is received using the data receiver sets of threads；
The business datum is sent to the data-pushing sets of threads by the Double buffer group mould；
The business datum is pushed to by the distributed post using the data-pushing sets of threads and subscribes to message system.
Preferably, the data receiver thread has for showing the current car networking number of devices established the link with it
Thread connect number, and, competition lock, it is described establish between car networking equipment and the data receiver thread the step of link
Including：
The thread connection number is monitored, and judges whether the thread connection number is more than predetermined threshold value；
If so, continuing to the industry transmitted by the car networking equipment currently established the link with the data receiver thread
Business data, and reject the business datum transmitted by the car networking equipment not established the link with the data receiver thread；
If it is not, linking between the car networking equipment and the data receiver thread is then established by competition lock,
And the link is stored in the data receiver thread.
Preferably, the car networking equipment has a socket listenfd, the rejection not with the data receiver
The step of business datum transmitted by the car networking equipment that thread establishes the link includes：
The socket listenfd is monitored, and judges that the socket listenfd whether there is in the data receiver
In the multiplex interface EPOLL of sets of threads；
If so, it is removed from the multiplex interface EPOLL of the data receiver sets of threads, and mark the set
The flag bit holdID of word listenfd is met, return judges the step of whether the thread connection number is more than predetermined threshold value；
The step of whether the thread connection number is more than predetermined threshold value judged if it is not, then returning.
Preferably, described that chain between the car networking equipment and the data receiver thread is established by the competition lock
It connects, and includes by the step being stored in the data receiver thread that links：
The car networking equipment currently established the link with the data receiver thread using the competition lock locking, and judge
Whether locking is successful；
The step of whether the thread connection number is more than predetermined threshold value judged if it is not, then returning；
If so, obtaining the socket of the current car networking equipment established the link with the data receiver thread
The flag bit holdID values of listenfd；
Judge the socket of the current vehicle car networking equipment established the link with the data receiver thread
Whether the value of the flag bit holdID of listenfd is more than -1；
If so, the current car networking equipment established the link with the data receiver thread that unlocks, and return
It returns and the step of whether the thread connection number is more than predetermined threshold value is judged；
If it is not, then marking the socket of the current car networking equipment established the link with the data receiver thread
The flag bit holdID of listenfd, and described current established with the data receiver thread that unlock after the completion of label
The car networking equipment of link, return judge the step of whether the thread connection number is more than predetermined threshold value.
Preferably, the Double buffer group mould includes the first buffer zone, and, the second buffer zone is described by described double
The step of business datum is sent to the data-pushing sets of threads by caching group mould include：
When first buffer zone is written in the business datum using the data receiver sets of threads, described in judgement
It whether there is business datum to be sent in second buffer zone；
If so, the business datum to be sent of the second buffer zone is sent to the data-pushing sets of threads, and sending out
The business datum to be sent in second buffer zone is emptied after sending；
If it is not, then when the data service being written next time, data service is written using second buffer zone.
On the other hand, the embodiment of the invention discloses a kind of pushers of car networking device gateway business datum, special
Sign is, the gateway includes data receiver sets of threads, data-pushing sets of threads, and, Double buffer group mould, the gateway has
Coupled distributed post subscribes to message system, and the data receiver sets of threads includes data receiver thread, the dress
Set including：
Module is established in link, for establishing linking between car networking equipment and the data receiver thread；
Business datum receiving module, for what is sent by the car networking equipment using data receiver sets of threads reception
Business datum；
Business datum sending module is pushed away for the business datum to be sent to the data by the Double buffer group mould
Send sets of threads；
Business datum pushing module, for the business datum to be pushed to described point using the data-pushing sets of threads
Cloth distribution subscription message system.
Preferably, the data receiver thread has for showing the current car networking number of devices established the link with it
Thread connect number, and, competition lock, the link establishes module and includes：
Threshold decision submodule connects number for monitoring the thread, and it is pre- to judge whether the thread connection number is more than
If threshold value；If so, calling business datum receiving submodule；If it is not, car networking equipment is then called to lock submodule；
Business datum receiving submodule, the vehicle connection for continuing to currently establish the link with the data receiver thread
Business datum transmitted by net equipment, and reject the car networking equipment not established the link with the data receiver thread and sent out
The business datum sent；
Car networking equipment locks submodule, is connect with the data for establishing the car networking equipment by competition lock
Link between take-up journey, and the link is stored in the data receiver thread.
Preferably, the car networking equipment includes with socket listenfd, the business datum receiving submodule：
Socket monitoring unit for monitoring the socket listenfd, and judges that the socket listenfd is
It is no to be present in the multiplex interface EPOLL of the data receiver sets of threads；If so, socket is called to remove unit；If
It is no, then call the first returning unit；
Socket removes unit, for it to be removed from the multiplex interface EPOLL of the data receiver sets of threads,
And the flag bit holdID of the socket listenfd is marked, return judges whether the thread connection number is more than predetermined threshold value
The step of；
The step of whether the thread connection number is more than predetermined threshold value judged for returning for first returning unit.
Preferably, the car networking equipment locking submodule includes：
Car networking equipment lock cell, for having been established with the data receiver thread using competition lock locking is current
The car networking equipment of link, and judge whether to lock successfully；If it is not, then calling the second returning unit；If so, calling socket
Acquiring unit；
The step of whether the thread connection number is more than predetermined threshold value judged for returning for second returning unit；
Socket acquiring unit is set for obtaining the current car networking established the link with the data receiver thread
The flag bit holdID values of standby socket listenfd；
Socket judging unit, for judging the current vehicle car networking established the link with the data receiver thread
Whether the value of the flag bit holdID of the socket listenfd of equipment is more than -1；If so, call release lock cell；If
It is no, then call socket marking unit；
Unlock unit, for the current car networking established the link with the data receiver thread that unlocks
Equipment, and return and the step of whether the thread connection number is more than predetermined threshold value judged；
Socket marking unit, for marking the current car networking established the link with the data receiver thread to set
The flag bit holdID of standby socket listenfd, and unlock and described currently connect with the data after the completion of label
The car networking equipment that take-up journey establishes the link, return judge the step of whether the thread connection number is more than predetermined threshold value.
Preferably, the Double buffer group mould includes the first buffer zone, and, the second buffer zone, the business datum hair
The module is sent to include：
Business datum judging submodule to be sent, for writing the business datum using the data receiver sets of threads
When entering first buffer zone, judge to whether there is business datum to be sent in second buffer zone；If so, calling
Business datum sending submodule to be sent；If it is not, then calling data service that submodule is written；
Business datum sending submodule to be sent, it is described for the business datum to be sent of the second buffer zone to be sent to
Data-pushing sets of threads, and empty after being sent the business datum to be sent in second buffer zone；
Submodule is written in data service, is used for when the data service being written next time, using second buffer zone
Data service is written.
The embodiment of the present invention includes following advantages：
The embodiment of the present invention is led to by the way that gateway is split as data receiver sets of threads and data hump lead journey two group moulds of group
After the mode of overload balance establishes the link between car networking equipment and data receiving thread, connect using data receiver sets of threads
The business datum sent by car networking equipment is received, then business datum is sent to by data-pushing sets of threads by Double buffer group mould,
Business datum is finally pushed into downstream distribution formula distribution subscription message system by data-pushing sets of threads, so as to avoid vehicle
Net equipment causes data receiver sets of threads to occur shying group phenomena when access gateway establishes the link, furthermore, it is understood that also avoiding
The car networking equipment access gateway during, some part occurs influencing whole flow process processing when delay jitter, more into one
For step, also avoids realizing data exchange with lock between sets of threads, accelerate flow processing speed, and then improve single gateway
Processing speed reduces the manufacturing cost of car networking.
Description of the drawings
Fig. 1 is a kind of step flow chart of the method for pushing embodiment of car networking device gateway business datum of the present invention；
Fig. 2 is a kind of exemplary flow chart of steps using the embodiment of the present invention of the present invention；
Fig. 3 is the exemplary flow chart of steps of the another kind application embodiment of the present invention of the present invention；
Fig. 4 is a kind of structure diagram of the pusher embodiment of car networking device gateway business datum of the present invention.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
One of the core concepts of the embodiments of the present invention is, introduces pipeline, the worker thread of gateway is divided into
Data receiver sets of threads and data hump lead journey group avoid influencing the processing capacity of gateway because of of short duration delay, by business
Pipelining avoids some part delay jitter from influencing whole flow process processing, and quotes dual-cache mechanism and avoid using lock between sets of threads
It realizes data exchange, accelerates flow processing speed, meanwhile, load balancing is carried out in access gateway to car networking equipment, is kept away
Exempt from frightened group phenomena occur, and the connection number for making per thread receive is roughly equal to realize the load balancing of cross-thread, to carry
The processing speed of high single gateway, and then reduce the manufacturing cost of car networking.
Referring to Fig.1, a kind of step of the method for pushing embodiment of car networking device gateway business datum of the present invention is shown
Rapid flow chart, can specifically include following steps：
Step 101, linking between car networking equipment and the data receiver thread is established；
In practical applications, the embodiment of the present invention can be applied in the terminal, for example, mobile phone, tablet computer, individual
Digital assistants, wearable device (such as bracelet, glasses, wrist-watch) etc..
In the concrete realization, the gateway of the embodiment of the present invention may include data receiver sets of threads and data hump lead journey
Group, and gateway can have and for showing currently connect number with the thread of its car networking number of devices established the link, and it is new
May include multiple data receiver threads in data receiver sets of threads, in addition, in embodiments of the present invention, car networking equipment can be with
With socket listenfd.
Under normal circumstances, in car networking equipment access gateway, due in data receiver sets of threads ReadThread groups
Thread has carries out EPOLL_IN event handlings to monitoring socket, so when there is new car networking equipment access, data connect
Receiving all threads in sets of threads ReadThread groups will all be waken up, but in fact finally only can successfully receive this there are one thread
Car networking equipment, in this way other threads are waken up in vain because receiving failure, are caused in data receiver sets of threads ReadThread
Occur shying group phenomena in group, in addition, since the thread between each thread in data receiver sets of threads ReadThread groups connects
It connects number to differ greatly, so as to cause some thread traffic overloads, other are then idle, and then resource is caused to be wasted.
In a preferred embodiment of the invention, car networking equipment and data receiver line can be established in the following way
Link between journey：
Watcher thread connects number, and judges whether thread connection number is more than predetermined threshold value；If so, continuing to currently
The business datum transmitted by car networking equipment established the link with data receiver thread, and reject not with data receiver thread
The business datum transmitted by car networking equipment established the link；It is connect with data if it is not, then establishing car networking equipment by competition lock
Link between take-up journey, and link is stored in data receiver thread.
In practical applications, it is flat to can be set as data receiver sets of threads ReadThread groups for the threshold value of the embodiment of the present invention
It is all connected with several 20%.
In the concrete realization, if the embodiment of the present invention is more than data receiver sets of threads in the connection number of current thread
When ReadThread groups averagely connect the 20% of number, then the thread no longer receives new connection, at this point, and those have been connected to
And socket listenfd by the thread management transmitted by data be also to continue with by the thread management, that is, overloading
In the case of refuse new connection, existing connection continues by the thread management, and if the connection number in current thread is less than
When data receiver sets of threads ReadThread groups averagely connect the 20% of number, then currently chain can have been established with gateway by locking
Linking between the car networking equipment and gateway is stored in the data receiver sets of threads by the car networking equipment connect.
In a particularly preferred embodiment of the invention, can reject in the following way not with data receiver line
The business datum transmitted by car networking equipment that journey establishes the link：
Socket listenfd is monitored, and judges that socket listenfd whether there is in the multichannel of data receiver sets of threads
In multiplex interface EPOLL；If so, by being removed in its multiplex interface EPOLL from data receiver sets of threads, and sign Case for holding
The flag bit holdID of word listenfd is met, return judges the step of whether thread connection number is more than predetermined threshold value；If it is not, then returning
It returns and the step of whether thread connection number is more than predetermined threshold value is judged.
In practical applications, if the embodiment of the present invention is more than data receiver sets of threads in the connection number of current thread
When ReadThread groups averagely connect the 20% of number, if the socket listenfd for listening to car networking equipment is present in the line
The EPOLL of journey local then removes away socket listenfd, and the flag bit holdID of socket listenfd is set
Being -1, the step of whether thread connection number is more than predetermined threshold value judged if do not returned if.
In another particularly preferred embodiment of the invention, car networking can be established by competing lock in the following way
Linking between equipment and data receiver thread, and link is stored in data receiver thread：
The car networking equipment currently established the link with data receiver thread using the competition lock locking, and judge whether
It locks successfully；The step of whether thread connection number is more than predetermined threshold value judged if it is not, then returning；If so, obtain it is current with
The flag bit holdID values of the socket listenfd for the car networking equipment that data receiver thread establishes the link；Judge it is current with
Whether the value of the flag bit holdID of the socket listenfd for the car networking equipment that data receiver thread establishes the link is more than -1；
If so, releasing the locking to the car networking equipment currently established the link with data receiver thread, and returns and judge that thread connects
The step of whether number is more than predetermined threshold value connect；If it is not, the car networking that then label has currently been established the link with data receiver thread is set
The flag bit holdID of standby socket listenfd, and released after the completion of label to currently being established with data receiver thread
The locking of the car networking equipment of link is releasing the locking to the car networking equipment currently established the link with data receiver thread
Afterwards, it returns and the step of whether thread connection number is more than predetermined threshold value is judged.
In the concrete realization, if the embodiment of the present invention is less than data receiver sets of threads in the connection number of current thread
When ReadThread groups averagely connect the 20% of number, then the first step, which first attempts to go the receiving to car networking equipment mutual
Reprimand order accept_mutex is locked, if locking failure, shows have socket of other threads by the car networking equipment at this time
Word listenfd is added into the multiplex interface EPOLL of other threads, and then thread return judges that thread connects number for this
It the step of whether being more than predetermined threshold value, is reattempted when executing load balancing loadBalance next time to receiving mutual exclusion order
Accept_mutex is locked, if locked successfully, whether judges holdID more than -1, if it is greater than then showing the vehicle at this time
The socket listenfd of networked devices in the EPOLL of other threads, judges the line then then discharging lock and returning
Journey connects the step of whether number is more than predetermined threshold value, the socket for showing the car networking equipment at this time if it is less than -1
Listenfd is not in the EPOLL of other threads, at this moment, can car networking equipment socket listenfd be added to the line
The ID of the thread is set as in the EPOLL of journey and by holdID, after completing to the setting of car networking equipment holdID, release lock
And return and the step of whether the thread connection number is more than predetermined threshold value judged, that is, the socket listenfd of car networking equipment
In the multiplex interface EPOLL of which thread, which thread just to receive new link by.
In practical applications, it is that processing is large quantities of that the multiplex interface EPOLL of the embodiment of the present invention, which can be linux kernel,
It measures filec descriptor and has made improved poll, be the enhancing version for multiplexing I/O interface select/poll under Linux.
To make those skilled in the art be better understood from the present invention, here is that the embodiment of the present invention provides a specific ginseng
Examine example：
Assuming that have access and the data receiver for reading to there are 4 ReadThread threads to carry out processing equipment in sets of threads at one,
The aray variable szConn that so then 1 global I NT type length of first to file is 4, for preserving the current connection number of per thread,
ReadThread0 writes szConn [0], and ReadThread3 writes szConn [3], and the sum of tetra- cell datas of szConn are current
Total connection number of gateway, is denoted as sum (szConn).Then apply for the INT type global variable holdID of a volatile again, use
To record the current Thread Id that socket listenfd has been added to multiplex interface EPOLL.
As shown in Fig. 2, ReadThread is allowed by a while cyclic periodicity to execute load balancing to this thread
LoadBalance and doWork operation, load balancing loadBalance be to avoid the occurrence of the function that frightened group phenomena designs,
DoWork for processing equipment access, exit, data unpackings, the operations such as data-pushing to double buffering, when equipment access is current
Thread connection number adds 1, subtracts 1 when exiting.
As shown in figure 3, establish between car networking equipment and the gateway during link, can by such as flow down
Cheng Shixian data receiver sets of threads load balancing:
Judge whether this thread connection number is more than pre-set threshold value, if it is less than then executing flow one, if it is greater than then executing
Flow two.Threshold values is defined as being more than averagely to connect the 20% of number, i.e. threshold=(sum (szConn)/4) * (1+20%).
Flow one, if attempt to lock return the result not be 0 if return immediately, show to have thread to join to the vehicle at this time
The socket listenfd processing of net equipment judges whether holdID is more than -1 if it is 0 to return the result, if it is greater than
Then show that the socket listenfd of the car networking equipment has been added to by holdID threads in EPOLL, directly unlocks at this time
And return, the socket listenfd of the car networking equipment is added in the EPOLL of this thread if result≤- 1, and will
HoldID is set to this Thread Id, then unlocks and returns.
Flow two judges listenfd whether in local EPOLL, if then by the socket of the car networking equipment
Listenfd is removed from local EPOLL, and holdID=-1 is arranged, and is shown currently without thread to listenfd
Reason.If it is not, then directly returning, shows that current thread has been more than connection average value at this time, need to continue below threshold values
Receive new connection.
Certainly, above-mentioned example example for reference only, those skilled in the art can also realize data by other means
Receiving thread group load balancing, is not restricted this application.
In this way, by synchronization, only there are one readThread handle monitoring socket in the EPOLL of oneself, can be with
The generation of frightened group phenomena is avoided, meanwhile, it is removed locally when the connection number of thread process is more than threshold values by the way that socket will be monitored
EPOLL, refusal receive more connections, until being less than threshold values, the connection number of each thread process can be made roughly equal.
Step 102, the business datum sent by the car networking equipment is received using the data receiver sets of threads；
In the concrete realization, the embodiment of the present invention may be used what the reception of data receiver sets of threads was sent by car networking equipment
Business datum.
Step 103, the business datum is sent to by the data-pushing sets of threads by the Double buffer group mould；
In the concrete realization, the gateway of the embodiment of the present invention may include Double buffer group mould, wherein Double buffer group mould can be with
Including the first buffer zone and the second buffer zone：
In embodiments of the present invention, can business datum data be sent to by Double buffer group mould in the following way to push away
Send sets of threads：
When first buffer zone is written in the business datum using the data receiver sets of threads, described in judgement
It whether there is business datum to be sent in second buffer zone；If so, the business datum to be sent of the second buffer zone is sent out
It send to the data-pushing sets of threads, and empties the business datum to be sent in second buffer zone after being sent；
If it is not, then when the data service being written next time, data service is written using second buffer zone.
For example, ReadThread and PushThread carries out data exchange by Double buffer, avoid with locking, to promote gateway
Processing speed, specific practice have assumed that B1 and B2 two cachings, when ReadThread is when writing B1, can first judge be in B2
It is no there are business datum to be sent, if so, B2 is labeled as read buffer region by PushThread, and by the industry to be sent in B2
Business data are sent to downstream distribution formula distribution subscription message system, empty the business datum to be sent in B2 after being sent completely；
If it is not, that is, it is judged that when B2 is empty, then B2 is set to write buffer region, B1 is labeled as read buffer region, when B1 is write in completion
It is fashionable, the business datum to be sent in B1 is sent to downstream distribution formula distribution subscription message system, and data will be written next time
When, business datum is written in B2.In this way, avoiding lock expense from promoting the place of thread by reading and writing different Buffer (caching)
Manage speed.
Step 104, the business datum distributed post is pushed to using the data-pushing sets of threads to subscribe to
Message system.
In practical applications, gateway can have coupled downstream distribution formula distribution subscription message system, and can
Business datum is pushed to downstream distribution formula distribution subscription message system using data-pushing sets of threads.
The embodiment of the present invention is led to by the way that gateway is split as data receiver sets of threads and data hump lead journey two group moulds of group
After the mode of overload balance establishes the link between car networking equipment and data receiving thread, connect using data receiver sets of threads
The business datum sent by car networking equipment is received, then business datum is sent to by data-pushing sets of threads by Double buffer group mould,
Business datum is finally pushed into downstream distribution formula distribution subscription message system by data-pushing sets of threads, so as to avoid vehicle
Net equipment causes data receiver sets of threads to occur shying group phenomena when access gateway establishes the link, furthermore, it is understood that also avoiding
The car networking equipment access gateway during, some part occurs influencing whole flow process processing when delay jitter, more into one
For step, also avoids realizing data exchange with lock between sets of threads, accelerate flow processing speed, and then improve single gateway
Processing speed reduces the manufacturing cost of car networking.
It should be noted that for embodiment of the method, for simple description, therefore it is all expressed as a series of action group
It closes, but those skilled in the art should understand that, the embodiment of the present invention is not limited by the described action sequence, because according to
According to the embodiment of the present invention, certain steps can be performed in other orders or simultaneously.Secondly, those skilled in the art also should
Know, embodiment described in this description belongs to preferred embodiment, and the involved action not necessarily present invention is implemented
Necessary to example.
With reference to Fig. 4, a kind of knot of the pusher embodiment of car networking device gateway business datum of the present invention is shown
Structure block diagram, can specifically include following module：
Module 201 is established in link, for establishing linking between car networking equipment and the data receiver thread；
Business datum receiving module 202 is sent out for being received using the data receiver sets of threads by the car networking equipment
The business datum sent；
Business datum sending module 203, for the business datum to be sent to the number by the Double buffer group mould
According to push sets of threads；
Business datum pushing module 204, for the business datum to be pushed to institute using the data-pushing sets of threads
It states distributed post and subscribes to message system.
In a preferred embodiment of the invention, it can also include following submodule that module 201 is established in the link：
Threshold decision submodule connects number for monitoring the thread, and it is pre- to judge whether the thread connection number is more than
If threshold value；If so, calling business datum receiving submodule；If it is not, car networking equipment is then called to lock submodule；
Business datum receiving submodule, the vehicle connection for continuing to currently establish the link with the data receiver thread
Business datum transmitted by net equipment, and reject the car networking equipment not established the link with the data receiver thread and sent out
The business datum sent；
Car networking equipment locks submodule, is connect with the data for establishing the car networking equipment by competition lock
Link between take-up journey, and the link is stored in the data receiver thread.
In a preferred embodiment of the invention, the business datum receiving submodule can also include such as lower unit：
Socket monitoring unit for monitoring the socket listenfd, and judges that the socket listenfd is
It is no to be present in the multiplex interface EPOLL of the data receiver sets of threads；If so, socket is called to remove unit；If
It is no, then call the first returning unit；
Socket removes unit, for it to be removed from the multiplex interface EPOLL of the data receiver sets of threads,
And the flag bit holdID of the socket listenfd is marked, return judges whether the thread connection number is more than predetermined threshold value
The step of；
The step of whether the thread connection number is more than predetermined threshold value judged for returning for first returning unit.
In a preferred embodiment of the invention, the car networking equipment locking submodule can also include such as lower unit：
Car networking equipment lock cell, for having been established with the data receiver thread using competition lock locking is current
The car networking equipment of link, and judge whether to lock successfully；If it is not, then calling the second returning unit；If so, calling socket
Acquiring unit；
The step of whether the thread connection number is more than predetermined threshold value judged for returning for second returning unit；
Socket acquiring unit is set for obtaining the current car networking established the link with the data receiver thread
The flag bit holdID values of standby socket listenfd；
Socket judging unit, for judging the current vehicle car networking established the link with the data receiver thread
Whether the value of the flag bit holdID of the socket listenfd of equipment is more than -1；If so, call release lock cell；If
It is no, then call socket marking unit；
Unlock unit, for the current car networking established the link with the data receiver thread that unlocks
Equipment, and return and the step of whether the thread connection number is more than predetermined threshold value judged；
Socket marking unit, for marking the current car networking established the link with the data receiver thread to set
The flag bit holdID of standby socket listenfd, and unlock and described currently connect with the data after the completion of label
The car networking equipment that take-up journey establishes the link, return judge the step of whether the thread connection number is more than predetermined threshold value.
In a preferred embodiment of the invention, the business datum sending module 203 can also include following submodule：
Business datum judging submodule to be sent, for writing the business datum using the data receiver sets of threads
When entering first buffer zone, judge to whether there is business datum to be sent in second buffer zone；If so, calling
Business datum sending submodule to be sent；If it is not, then calling data service that submodule is written；
Business datum sending submodule to be sent, it is described for the business datum to be sent of the second buffer zone to be sent to
Data-pushing sets of threads, and empty after being sent the business datum to be sent in second buffer zone；
Submodule is written in data service, is used for when the data service being written next time, using second buffer zone
Data service is written.
The embodiment of the present invention is led to by the way that gateway is split as data receiver sets of threads and data hump lead journey two group moulds of group
After the mode of overload balance establishes the link between car networking equipment and data receiving thread, connect using data receiver sets of threads
The business datum sent by car networking equipment is received, then business datum is sent to by data-pushing sets of threads by Double buffer group mould,
Business datum is finally pushed into downstream distribution formula distribution subscription message system by data-pushing sets of threads, so as to avoid vehicle
Net equipment causes data receiver sets of threads to occur shying group phenomena when access gateway establishes the link, furthermore, it is understood that also avoiding
The car networking equipment access gateway during, some part occurs influencing whole flow process processing when delay jitter, more into one
For step, also avoids realizing data exchange with lock between sets of threads, accelerate flow processing speed, and then improve single gateway
Processing speed reduces the manufacturing cost of car networking.
For device embodiments, since it is basically similar to the method embodiment, so fairly simple, the correlation of description
Place illustrates referring to the part of embodiment of the method.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiment, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can be provided as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be with reference to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in flow and/or box combination.These can be provided
Computer program instructions are set to all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine so that is held by the processor of computer or other programmable data processing terminal equipments
Capable instruction generates for realizing in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes
The device of specified function.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing terminal equipments
In computer-readable memory operate in a specific manner so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one flow of flow chart or multiple flows and/or one side of block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing terminal equipments so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one flow of flow chart or multiple flows
And/or in one box of block diagram or multiple boxes specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also include other elements that are not explicitly listed, or further include for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device including the element.
Method for pushing to a kind of car networking device gateway business datum provided by the present invention and a kind of car networking above
The pusher of device gateway business datum, is described in detail, and specific case used herein is to the principle of the present invention
And embodiment is expounded, the explanation of above example is only intended to help to understand that the method for the present invention and its core are thought
Think；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, in specific embodiments and applications
There will be changes, in conclusion the content of the present specification should not be construed as limiting the invention.
Claims (10)
1. a kind of method for pushing of car networking device gateway business datum, which is characterized in that the gateway includes data receiver line
Journey group, data-pushing sets of threads, and, there is Double buffer group mould, the gateway coupled distributed post subscription to disappear
Breath system, the data receiver sets of threads include data receiver thread, the method includes：
Establish linking between car networking equipment and the data receiver thread；
The business datum sent by the car networking equipment is received using the data receiver sets of threads；
The business datum is sent to the data-pushing sets of threads by the Double buffer group mould；
The business datum is pushed to by the distributed post using the data-pushing sets of threads and subscribes to message system.
2. according to the method described in claim 1, it is characterized in that, the data receiver thread have for show it is current with
The thread of its car networking number of devices established the link connects number, and, competition lock is described to establish car networking equipment and the number
Include according to the step of link between receiving thread：
The thread connection number is monitored, and judges whether the thread connection number is more than predetermined threshold value；
If so, continuing to the business number transmitted by the car networking equipment currently established the link with the data receiver thread
According to, and reject the business datum transmitted by the car networking equipment not established the link with the data receiver thread；
If it is not, linking between the car networking equipment and the data receiver thread is then established by competition lock, and will
The link is stored in the data receiver thread.
3. according to the method described in claim 2, it is characterized in that, the car networking equipment has socket listenfd, institute
The step of stating the business datum transmitted by the car networking equipment that is not established the link with the data receiver thread of rejection include：
The socket listenfd is monitored, and judges that the socket listenfd whether there is in the data receiver thread
In the multiplex interface EPOLL of group；
If so, it is removed from the multiplex interface EPOLL of the data receiver sets of threads, and mark the socket
The flag bit holdID of listenfd, return judge the step of whether the thread connection number is more than predetermined threshold value；
The step of whether the thread connection number is more than predetermined threshold value judged if it is not, then returning.
4. according to the method described in claim 2, it is characterized in that, described establish the car networking equipment by competition lock
Linking between the data receiver thread, and include by the step being stored in the data receiver thread that links：
The car networking equipment currently established the link with the data receiver thread using the competition lock locking, and judge whether
It locks successfully；
The step of whether the thread connection number is more than predetermined threshold value judged if it is not, then returning；
If so, obtaining the socket of the current car networking equipment established the link with the data receiver thread
The flag bit holdID values of listenfd；
Judge the socket listenfd's of the current vehicle car networking equipment established the link with the data receiver thread
Whether the value of flag bit holdID is more than -1；
If so, the current car networking equipment established the link with the data receiver thread that unlocks, and return and sentence
The step of whether disconnected thread connection number is more than predetermined threshold value；
If it is not, then marking the socket of the current car networking equipment established the link with the data receiver thread
The flag bit holdID of listenfd, and described current established with the data receiver thread that unlock after the completion of label
The car networking equipment of link, return judge the step of whether the thread connection number is more than predetermined threshold value.
5. according to the method described in claim 1, it is characterized in that, the Double buffer group mould includes the first buffer zone, and, the
Two buffer zones, the described the step of business datum is sent to by the data-pushing sets of threads by the Double buffer group mould
Including：
When first buffer zone is written in the business datum using the data receiver sets of threads, described second is judged
It whether there is business datum to be sent in buffer zone；
If so, the business datum to be sent of the second buffer zone is sent to the data-pushing sets of threads, and sending
The business datum to be sent in second buffer zone is emptied after finishing；
If it is not, then when the data service being written next time, data service is written using second buffer zone.
6. a kind of pusher of car networking device gateway business datum, which is characterized in that the gateway includes data receiver line
Journey group, data-pushing sets of threads, and, there is Double buffer group mould, the gateway coupled distributed post subscription to disappear
Breath system, the data receiver sets of threads includes data receiver thread, and described device includes：
Module is established in link, for establishing linking between car networking equipment and the data receiver thread；
Business datum receiving module, for receiving the business sent by the car networking equipment using the data receiver sets of threads
Data；
Business datum sending module, for the business datum to be sent to the data-pushing line by the Double buffer group mould
Journey group；
Business datum pushing module, for the business datum to be pushed to the distribution using the data-pushing sets of threads
Distribution subscription message system.
7. device according to claim 6, which is characterized in that the data receiver thread have for show it is current with
The thread of its car networking number of devices established the link connects number, and, competition lock, the link establishes module and includes：
Threshold decision submodule connects number for monitoring the thread, and judges whether the thread connection number is more than default threshold
Value；If so, calling business datum receiving submodule；If it is not, car networking equipment is then called to lock submodule；
Business datum receiving submodule, the car networking for continuing to currently establish the link with the data receiver thread are set
Standby transmitted business datum, and reject transmitted by the car networking equipment not established the link with the data receiver thread
Business datum；
Car networking equipment locks submodule, for establishing the car networking equipment and the data receiver line by competition lock
Link between journey, and the link is stored in the data receiver thread.
8. device according to claim 7, which is characterized in that the car networking equipment has socket listenfd, institute
Stating business datum receiving submodule includes：
Socket monitoring unit for monitoring the socket listenfd, and judges whether the socket listenfd deposits
It is in the multiplex interface EPOLL of the data receiver sets of threads；If so, socket is called to remove unit；If it is not, then
Call the first returning unit；
Socket removes unit, for removing it from the multiplex interface EPOLL of the data receiver sets of threads, and marks
Remember the flag bit holdID of the socket listenfd, returns to the step for judging whether the thread connection number is more than predetermined threshold value
Suddenly；
The step of whether the thread connection number is more than predetermined threshold value judged for returning for first returning unit.
9. device according to claim 7, which is characterized in that the car networking equipment locks submodule and includes：
Car networking equipment lock cell, for currently having been established the link with the data receiver thread using competition lock locking
Car networking equipment, and judge whether to lock successfully；If it is not, then calling the second returning unit；If so, socket is called to obtain
Unit；
The step of whether the thread connection number is more than predetermined threshold value judged for returning for second returning unit；
Socket acquiring unit, for obtaining the current car networking equipment established the link with the data receiver thread
The flag bit holdID values of socket listenfd；
Socket judging unit, for judging the current vehicle car networking equipment established the link with the data receiver thread
Socket listenfd flag bit holdID value whether be more than -1；If so, call release lock cell；If it is not, then
Call socket marking unit；
Unlock unit, and for unlocking, the current car networking established the link with the data receiver thread is set
It is standby, and return and the step of whether the thread connection number is more than predetermined threshold value judged；
Socket marking unit, for marking the current car networking equipment established the link with the data receiver thread
The flag bit holdID of socket listenfd, and unlock after the completion of label it is described it is current with the data receiver line
The car networking equipment that journey establishes the link, return judge the step of whether the thread connection number is more than predetermined threshold value.
10. device according to claim 6, which is characterized in that the Double buffer group mould includes the first buffer zone, and,
Second buffer zone, the business datum sending module include：
Business datum judging submodule to be sent, for institute to be written in the business datum using the data receiver sets of threads
When stating the first buffer zone, judge to whether there is business datum to be sent in second buffer zone；If so, calling pending
Send business datum sending submodule；If it is not, then calling data service that submodule is written；
Business datum sending submodule to be sent, for the business datum to be sent of the second buffer zone to be sent to the data
Sets of threads is pushed, and empties the business datum to be sent in second buffer zone after being sent；
Submodule is written in data service, for when the data service being written next time, being written using second buffer zone
Data service.
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| CN201711238132.8A CN108306926B (en) | 2017-11-30 | 2017-11-30 | Method and device for pushing gateway service data of Internet of vehicles equipment |
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| CN201711238132.8A CN108306926B (en) | 2017-11-30 | 2017-11-30 | Method and device for pushing gateway service data of Internet of vehicles equipment |
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