CN101800695A - Method for realizing synchronous communication and asynchronous communication by software - Google Patents
Method for realizing synchronous communication and asynchronous communication by software Download PDFInfo
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- CN101800695A CN101800695A CN200910312582A CN200910312582A CN101800695A CN 101800695 A CN101800695 A CN 101800695A CN 200910312582 A CN200910312582 A CN 200910312582A CN 200910312582 A CN200910312582 A CN 200910312582A CN 101800695 A CN101800695 A CN 101800695A
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Abstract
The invention discloses a method for realizing synchronous communication and asynchronous communication by software, relating to the technical field of specific method which realizes communication between software functional modules. The invention provides a method for realizing the synchronous communication and asynchronous communication between software functional modules by a relative independent module algorithm, realizing synchronous communication by a registered callback function, and realizing asynchronous communication by a cyclic message array; and the invention occupies less system resource, does not base on other middleware, can be used for various development platforms and has strong transportability.
Description
Technical field
The present invention relates to the specific implementation method and technology field of communicating by letter between a kind of software function module, particularly a kind of software is realized the method for synchronous communication and asynchronous communication.
Background technology
At present, in the embedded product exploitation, because the continuous increase of user function demand, independently software module is more and more, and function is also more and more independent, so the intercommunication mutually of intermodule is absolutely necessary.For example: when the user came gui menu on the operating display by remote controller, can be divided into two independently modules when realizing in software: one was the remote controller receiving processing module, and one is that GUI shows and processing module.The communication of two intermodules can be divided into two kinds, i.e. asynchronous communication and synchronous communication.When for synchronous communication, the user must wait until just can carry out ensuing straighforward operation after the operation in the gui menu is finished, require real-time than higher in this case; And during asynchronous communication, can the limit operating and remote controlling, the processing in the gui menu also can be carried out on the backstage, does not have the requirement of very high real-time in this case.And in general product development, these two kinds of communication modes all are service or the interfaces (as: minigui, DirectFB etc.) that is provided by third-party middleware, not only relate to the mandate cost issues of software development, and take more system resources.Approaching prior art comprises the implementation method of CN200610154794.2 based on the interprocess asynchronous communication of Java, relates to the inter-process communication techniques field, aims to provide a kind of implementation method of the interprocess asynchronous communication based on Java.This method may further comprise the steps: the realization of (1) communication service process; (2) in-process communication service process realizes; (3) design of message; (4) realization of communication process.The present invention has adopted centralized communication mode, and with upper layer application mutual in introduced message trigger mechanism, the message of receiving is responsible for calling call back function by communication system handles.Simultaneously, message is packaged into object, utilizes the direct transmission object of serializing mechanism of Java, simplify upper layer application message encapsulation and parsing; Process only and the service interprogram communication, between process with service routine as intermediary's exchange message; Process is understood the position of service routine, and service routine keeps the information of all processes.
Summary of the invention
The objective of the invention is to propose a kind of method of utilizing software approach to realize synchronous communication and these two kinds of communication modes of asynchronous communication, and not based on any other middleware.
A kind of software is realized the method for synchronous communication and asynchronous communication, may further comprise the steps: the realization of (1) synchronous communication: 1. registration message is handled function; 2. after sending synchronization message, wait for the processing that receives message module; 3. receive message module and carry out Message Processing; 4. send message module and return result, carry out next step operation; (2) realization of asynchronous communication: 1. initial message formation, distributing system resource, the message count that initialization is read and write are 0; 2. send a message to and preserve in the message queue and ordering, make the message count that writes add 1; 3. send message module return results immediately, can carry out next step operation; 4. receive message module and regularly check the current state of message queue; 5. as when not having message readable, then wait for; 6. exist if any message, then therefrom read a piece of news, and make the message count of reading add 1; 7. receiving message module carries out the message read and handles operation.
Beneficial effect of the present invention:
A kind of software of the present invention is realized the method for synchronous communication and asynchronous communication, a more independently modular algorithm is proposed, realize the synchronous communication between each software function module and the method for asynchronous communication, utilize the call back function of a registration to realize synchronous communication, adopt the message queue of a circulation to realize the method for asynchronous communication, not only take less system resource, not based on any other middleware, and can be used for various development platform, portable strong.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the schematic flow sheet of synchronous communication of the present invention;
Fig. 2 is the schematic flow sheet of asynchronous communication of the present invention.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The realization of synchronous communication as shown in Figure 1: 1. registration message is handled function; 2. after sending synchronization message, wait for the processing that receives message module; 3. receive message module and carry out Message Processing; 4. send message module and return result, carry out next step operation;
The data structure of definition module is as follows:
struct__module
{
HANDLE handle; The initial address of this module of/* in internal memory, promptly label */
... the out of Memory of/* module and attribute */
WNDPROC * WindowProc; / * message processing function */
}MODULE；
The implementation method of synchronous communication SendMessage function:
SendMessage (HANDLE handle/* resource label */,
Int nType/* type of message */,
The data 1* that DWORD nData1/* transmits/,
The data 2* that DWORD nData2/* transmits/
)；
Register self-defining message processing function callbackFun;
Carry out CallbackFun=GetModuleProc (handle) function: the message processing function callbackFun that finds corresponding receiver module by handle;
Directly carry out the call back function CallbackFun of this registration;
Return.
The realization of asynchronous communication as shown in Figure 2: 1. initial message formation, distributing system resource, the message count that initialization is read and write are 0; 2. send a message to and preserve in the message queue and ordering, make the message count that writes add 1; 3. send message module return results immediately, can carry out next step operation; 4. receive message module and regularly check the current state of message queue; 5. as when not having message readable, then wait for; 6. exist if any message, then therefrom read a piece of news, and make the message count of reading add 1; 7. receiving message module carries out the message read and handles operation.
The data structure of module is as follows:
struct__module
{
HANDLE handle; The initial address of this module of/* in internal memory, promptly label */
... the out of Memory of/* module and attribute */
WNDPROC * WindowProc; / * message processing function */
PMSGQUEUE pMessages; The message queue management * of this module of/*/
}MODULE；
The message queue data structure definition:
Struct__MSGQUEUE
{
Pthread_mutex_t lock; / * synchronization mechanism */
MSG msgData; / * message content and data */
Int readPos; The current position * that in message queue, can read of/*/
Int writePos; / * current in message queue writeable position */
}；
The implementation method of asynchronous communication PostMessage function:
The initial message formation, the storage allocation space is initialized as 0 reading with writeable message count;
Register self-defining message processing function;
Obtain the message queue address of this module by parameter handle;
Corresponding message data is put in this message queue sorts;
Writing position in the message queue is added 1.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (1)
1. a software is realized the method for synchronous communication and asynchronous communication, it is characterized in that, may further comprise the steps: the realization of (1) synchronous communication: 1. registration message is handled function; 2. after sending synchronization message, wait for the processing that receives message module; 3. receive message module and carry out Message Processing; 4. send message module and return result, carry out next step operation; (2) realization of asynchronous communication: 1. initial message formation, distributing system resource, the message count that initialization is read and write are 0; 2. send a message to and preserve in the message queue and ordering, make the message count that writes add 1; 3. send message module return results immediately, can carry out next step operation; 4. receive message module and regularly check the current state of message queue; 5. as when not having message readable, then wait for; 6. exist if any message, then therefrom read a piece of news, and make the message count of reading add 1; 7. receiving message module carries out the message read and handles operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910312582A CN101800695A (en) | 2009-12-30 | 2009-12-30 | Method for realizing synchronous communication and asynchronous communication by software |
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| CN200910312582A CN101800695A (en) | 2009-12-30 | 2009-12-30 | Method for realizing synchronous communication and asynchronous communication by software |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495755A (en) * | 2011-11-03 | 2012-06-13 | 深圳市开立科技有限公司 | Ultrasonic measurement system and module interaction method thereof |
| CN108958903A (en) * | 2017-05-25 | 2018-12-07 | 北京忆恒创源科技有限公司 | Embedded multi-core central processing unit method for scheduling task and device |
| CN111310638A (en) * | 2019-12-31 | 2020-06-19 | 深圳云天励飞技术有限公司 | Data processing method and device and computer readable storage medium |
-
2009
- 2009-12-30 CN CN200910312582A patent/CN101800695A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495755A (en) * | 2011-11-03 | 2012-06-13 | 深圳市开立科技有限公司 | Ultrasonic measurement system and module interaction method thereof |
| CN102495755B (en) * | 2011-11-03 | 2013-04-17 | 深圳市开立科技有限公司 | Ultrasonic measurement system and module interaction method of ultrasonic measurement system |
| CN108958903A (en) * | 2017-05-25 | 2018-12-07 | 北京忆恒创源科技有限公司 | Embedded multi-core central processing unit method for scheduling task and device |
| CN108958903B (en) * | 2017-05-25 | 2024-04-05 | 北京忆恒创源科技股份有限公司 | Embedded multi-core central processor task scheduling method and device |
| CN111310638A (en) * | 2019-12-31 | 2020-06-19 | 深圳云天励飞技术有限公司 | Data processing method and device and computer readable storage medium |
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Open date: 20100811 |