CN114064153B - Method and device for loading embedded dynamic module based on multi-core processor - Google Patents
Method and device for loading embedded dynamic module based on multi-core processor Download PDFInfo
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- 238000011068 loading method Methods 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims description 13
- 238000012545 processing Methods 0.000 claims abstract description 80
- 238000004891 communication Methods 0.000 claims abstract description 67
- 238000012544 monitoring process Methods 0.000 claims abstract description 42
- 230000018109 developmental process Effects 0.000 description 5
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- 238000004806 packaging method and process Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44521—Dynamic linking or loading; Link editing at or after load time, e.g. Java class loading
- G06F9/44526—Plug-ins; Add-ons
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/546—Message passing systems or structures, e.g. queues
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Abstract
The invention discloses an embedded dynamic module loading method and device based on a multi-core processor, wherein the device comprises a dynamic loading component and a dynamic loading management component; a communication proxy module deployed on a main processing core of the multi-core processor receives dynamic module loading, refreshing and unloading commands issued by a host dynamic loading component, and an input monitoring proxy module forwards the commands to a target processing core in an inter-core communication mode; the dynamic loading management module deployed on the target processing core executes the command, returns the command execution result to the main processing core output monitoring agent module in an inter-core communication mode, and returns the command execution result to the dynamic loading component by the communication agent module. The invention adopts the inter-core communication mode to realize a dynamic loading mechanism on all processing cores of the multi-core processor, can fully play the processing capability of the multi-core processor, enhances the flexibility, fault tolerance and expansibility of embedded application software, and improves the software development efficiency.
Description
Technical Field
The invention relates to a dynamic module loading method, in particular to an embedded dynamic module loading method and device based on a multi-core processor, and belongs to the technical field of embedded system development.
Background
The traditional embedded system development mode is relatively simple, but has the defects that when other applications need to be newly added or the started applications need to be corrected, developers need to recompile and link all source codes and then download the source codes to the target machine. The traditional embedded system development mode lacks flexibility, fault tolerance and expansibility, so that the problems of excessive software development repeatability, low software development efficiency and the like are caused.
The flexibility, fault tolerance and expansibility have extremely important significance for the development of embedded software, and the dynamic loading mechanism can enable the embedded operating system to have the three characteristics at the same time. The dynamic loading mechanism can realize the separation of the operating system and the application module, so that the operating system has the functions of a linker and a loader, the application module can be dynamically loaded into the system through communication links such as a network, a serial port and the like, and the dynamic linking and configuration of all data and functions are realized in the operating system, thereby achieving the dynamic maintenance and expansion of the system functions.
However, for an embedded multi-core processor application running in AMP mode, if other processing cores on the processor, except the main core, cannot communicate with the host, then the dynamic modules can only be loaded onto the main core entirely, which will cause the main core to be overloaded, so that the multi-core processor cannot fully exploit its multi-core multiprocessing capability.
Disclosure of Invention
The invention aims to provide an embedded dynamic module loading method and device based on a multi-core processor.
The invention realizes the above purpose through the following technical scheme: a dynamic module loading device based on a multi-core processor comprises
The dynamic loading assembly comprises a graphical interface plug-in, a dynamic loading plug-in and a communication management plug-in;
the dynamic loading management component comprises a communication proxy module, an input monitoring proxy module, an output monitoring proxy module and a dynamic loading management module.
The dynamic module loading device based on the multi-core processor adopts a C/S architecture, a remote general-purpose computer is used as a host, and a dynamic loading component is deployed; the multi-core processor is used as a target machine, runs an AMP mode and is deployed with a dynamic loading management component.
The communication proxy module, the input monitoring proxy module and the output monitoring proxy module are deployed on a main processing core of the multi-core processor, and the dynamic loading management module is deployed on all processing cores of the multi-core processor.
The main processing core of the multi-core processor can communicate with the host machine through communication links such as Ethernet or serial ports, and an inter-core communication controller is arranged between the main processing core and other processing cores; other processing cores of the multi-core processor are unable to communicate with the host.
An embedded dynamic module loading method based on a multi-core processor, the dynamic module loading method comprises the following steps of
S1: selecting a command to be executed by the dynamic module through the graphical interface plug-in, and triggering the command;
s2: the dynamic loading plug-in packages the command according to the dynamic loading protocol format;
s3: the communication management plug-in sends a command to the main core;
s4: the communication proxy module receives the command issued by the host machine component and sends the command to the input monitoring proxy module;
s5: the input monitoring agent module analyzes the command, takes the command as a message text, and forwards the command to the target processing core according to an inter-core communication protocol format;
s6: the dynamic loading management module of the target processing core receives and executes the command;
s7: the dynamic loading management module of the target processing core takes the command execution result as a message text and forwards the command execution result to the output monitoring module according to the inter-core communication protocol format;
s8: the output monitoring module receives the command execution result, encapsulates the command execution result according to a dynamic loading protocol format and sends the command execution result to the communication proxy module;
s9: the communication agent module sends the command execution result to the communication management plug-in;
s10: the communication management plug-in receives a command execution result;
s11: the dynamic loading plug-in stores the command execution result in a local data container and pushes the command execution result to the graphical interface plug-in;
s12: the graphical interface plug-in displays the command execution result.
As still further aspects of the invention: in the step S1, the command comprises three types of dynamic loading, dynamic refreshing and dynamic unloading.
The dynamic loading refers to downloading a binary file of a dynamic module into a memory of the multi-core processor, repositioning a symbol of the dynamic module, dynamically linking the dynamic module, and loading the dynamic module into a system for operation;
the dynamic refreshing refers to traversing the dynamic module linked list, searching and updating the information such as the name, ID, running state, running core number and the like of the dynamic module currently running to the dynamic loading component;
dynamic offloading refers to removing a dynamic module from the multi-core processor memory and reclaiming the memory allocated to the dynamic module.
As still further aspects of the invention: the dynamic loading linked list is a linked list maintained by the dynamic loading management module in the execution process of the dynamic loading command and the dynamic unloading command and is used for recording the name, ID, running state and running core number of the dynamic module.
As still further aspects of the invention: in S2 and S8, the dynamic loading protocol format includes information such as a command type, a data length, a source processor number, a source processing core number, a target processor number, a target processing core number, a command execution result, and the like.
As still further aspects of the invention: in the step S5 and the step S7, the communication among the input monitoring agent module, the output monitoring agent module and the dynamic loading management module is based on an inter-core communication mode of a message queue, and when the inter-core communication is performed, the main processing core sends the inter-core message queue containing the command to the dynamic loading management module on the target processing core through the input monitoring agent module; and the target processing core receives the inter-core message queue, processes the command and then sends the inter-core message queue containing the command execution result to the output monitoring agent module on the main processing core.
In the initialization process of the dynamic loading management module, an inter-core message queue needs to be initialized, and a message queue ID handle is set according to a processing core number.
As still further aspects of the invention: in S5 and S7, the inter-core communication protocol format includes a message length, a message priority, a message queue ID, a target processing core number, a source processing core number, and a message body.
The beneficial effects of the invention are as follows: the method comprises the steps that a communication proxy module, an input monitoring proxy module and an output monitoring proxy module are deployed on a main processing core of the multi-core processor, dynamic module loading, refreshing and unloading commands issued by a host dynamic loading component are forwarded to a target processing core in an inter-core communication mode, so that a dynamic loading management module deployed on the target processing core executes corresponding commands, a dynamic loading mechanism is realized on all processing cores of the multi-core processor, the processing capacity of the multi-core processor can be fully exerted, the flexibility, fault tolerance and expansibility of embedded application software are enhanced, and the software development efficiency is improved.
Drawings
FIG. 1 is a schematic view of a frame structure of the device of the present invention;
FIG. 2 is a schematic flow chart of the method of the present invention;
FIG. 3 is a diagram of a dynamic loading protocol format according to the present invention;
FIG. 4 is a diagram illustrating an inter-core communication protocol format according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to FIG. 1, a dynamic module loading device based on a multi-core processor includes
The dynamic loading assembly comprises a graphical interface plug-in, a dynamic loading plug-in and a communication management plug-in;
the dynamic loading management component comprises a communication proxy module, an input monitoring proxy module, an output monitoring proxy module and a dynamic loading management module.
The dynamic module loading device based on the multi-core processor adopts a C/S architecture, a remote general-purpose computer is used as a host, and a dynamic loading component is deployed; the multi-core processor is used as a target machine, runs an AMP mode and is deployed with a dynamic loading management component.
The communication proxy module, the input monitoring proxy module and the output monitoring proxy module are deployed on a main processing core of the multi-core processor, and the dynamic loading management module is deployed on all processing cores of the multi-core processor.
The main processing core of the multi-core processor can communicate with the host machine through communication links such as Ethernet or serial ports, and an inter-core communication controller is arranged between the main processing core and other processing cores; other processing cores of the multi-core processor are unable to communicate with the host.
Example two
Referring to fig. 2 to 4, an embedded dynamic module loading method based on a multi-core processor includes 8 processing cores, where the 8 processing cores are all operated in an AMP mode. Only processing core No. 0 supports communication with the host computer through the ethernet, other processing cores cannot communicate with the host computer, and an inter-core communication controller is provided between the processing core No. 0 and the other processing cores, so that processing core No. 0 is selected as a main processing core, and the dynamic module loading method comprises the following steps:
s1, selecting a command to be executed by a dynamic module through a graphical interface plug-in, and triggering the command;
s2, the dynamic loading plug-in packages the command according to a dynamic loading protocol format;
s3, the communication management plug-in sends a command to the main core;
s4, the communication proxy module receives the command issued by the host machine component and sends the command to the input monitoring proxy module;
s5, inputting a command analyzed by the monitoring agent module, and forwarding the command to the target processing core according to the inter-core communication protocol format by taking the command as a message text;
s6, the dynamic loading management module of the target processing core receives and executes the command;
s7, the dynamic loading management module of the target processing core takes the command execution result as a message text and forwards the command execution result to the output monitoring module according to the inter-core communication protocol format;
s8, outputting a command execution result received by the monitoring module, packaging the command execution result according to a dynamic loading protocol format, and sending the command execution result to the communication proxy module;
s9, the communication proxy module sends the command execution result to the communication management plug-in;
s10, the communication management plug-in receives a command execution result;
s11, the dynamic loading plug-in stores the command execution result in a local data container, and pushes the command execution result to the graphical interface plug-in;
s12, the graphical interface plug-in displays the command execution result.
In the embodiment of the present invention, in S1, the command includes three types of dynamic loading, dynamic refreshing and dynamic unloading.
The dynamic loading refers to downloading a binary file of a dynamic module into a memory of the multi-core processor, repositioning a symbol of the dynamic module, dynamically linking the dynamic module, and loading the dynamic module into a system for operation;
the dynamic refreshing refers to traversing the dynamic module linked list, searching and updating the information such as the name, ID, running state, running core number and the like of the dynamic module currently running to the dynamic loading component;
dynamic offloading refers to removing a dynamic module from the multi-core processor memory and reclaiming the memory allocated to the dynamic module.
In the embodiment of the invention, the dynamic loading linked list is a linked list maintained by the dynamic loading management module in the execution process of the dynamic loading command and the dynamic unloading command and is used for recording the name, ID, running state and running core number of the dynamic module.
In the embodiment of the present invention, in S2 and S8, the dynamic loading protocol format includes information such as a command type, a data length, a source processor number, a source processing core number, a target processor number, a target processing core number, a command execution result, and the like.
In the embodiment of the present invention, in S5 and S7, the communication among the input monitoring agent module, the output monitoring agent module and the dynamic loading management module is based on an inter-core communication mode of a message queue, and when the inter-core communication is performed, the main processing core sends the inter-core message queue containing the command to the dynamic loading management module on the target processing core through the input monitoring agent module; and the target processing core receives the inter-core message queue, processes the command and then sends the inter-core message queue containing the command execution result to the output monitoring agent module on the main processing core.
In the initialization process of the dynamic loading management module, an inter-core message queue needs to be initialized, and a message queue ID handle is set according to a processing core number.
In the embodiment of the present invention, in S5 and S7, the inter-core communication protocol format includes a message length, a message priority, a message queue ID, a target processing core number, a source processing core number, and a message body.
Working principle: a communication proxy module deployed on a main processing core of the multi-core processor receives dynamic module loading, refreshing and unloading commands issued by a host dynamic loading component, and an input monitoring proxy module forwards the commands to a target processing core in an inter-core communication mode; the dynamic loading management module deployed on the target processing core executes the command, returns the command execution result to the main processing core output monitoring agent module in an inter-core communication mode, and returns the command execution result to the dynamic loading component by the communication agent module. The invention adopts the inter-core communication mode to realize a dynamic loading mechanism on all processing cores of the multi-core processor, can fully play the processing capability of the multi-core processor, enhances the flexibility, fault tolerance and expansibility of embedded application software, and improves the software development efficiency.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. A loading method of an embedded dynamic module loading device based on a multi-core processor is characterized in that,
the embedded dynamic module loading device based on the multi-core processor comprises:
the dynamic loading assembly comprises a graphical interface plug-in, a dynamic loading plug-in and a communication management plug-in;
the dynamic loading management component comprises a communication proxy module, an input monitoring proxy module, an output monitoring proxy module and a dynamic loading management module;
the dynamic module loading device based on the multi-core processor adopts a C/S architecture, a remote general-purpose computer is used as a host, and a dynamic loading component is deployed; the multi-core processor is used as a target machine, operates an AMP mode and is deployed with a dynamic loading management component;
the communication proxy module, the input monitoring proxy module and the output monitoring proxy module are deployed on a main processing core of the multi-core processor, and the dynamic loading management module is deployed on all processing cores of the multi-core processor;
the main processing core of the multi-core processor communicates with the host machine through a communication link, and an inter-core communication controller is arranged between the main processing core and other processing cores; other processing cores of the multi-core processor cannot communicate with the host;
the loading method comprises the following steps:
s1, selecting a command to be executed by a dynamic module through a graphical interface plug-in, and triggering the command;
s2, the dynamic loading plug-in packages the command according to a dynamic loading protocol format;
s3, the communication management plug-in sends a command to the main core;
s4, the communication proxy module receives the command issued by the host machine component and sends the command to the input monitoring proxy module;
s5, inputting a command analyzed by the monitoring agent module, and forwarding the command to the target processing core according to the inter-core communication protocol format by taking the command as a message text;
s6, the dynamic loading management module of the target processing core receives and executes the command;
s7, the dynamic loading management module of the target processing core takes the command execution result as a message text and forwards the command execution result to the output monitoring module according to the inter-core communication protocol format;
s8, the output monitoring module receives the command execution result, encapsulates the command execution result according to a dynamic loading protocol format and sends the command execution result to the communication proxy module;
s9, the communication proxy module sends the command execution result to the communication management plug-in;
s10, the communication management plug-in receives a command execution result;
s11, the dynamic loading plug-in stores the command execution result in a local data container, and pushes the command execution result to the graphical interface plug-in;
s12, the graphical interface plug-in displays a command execution result;
in S5 and S7, the communication among the input monitoring agent module, the output monitoring agent module and the dynamic loading management module is based on an inter-core communication mode of a message queue, and when the inter-core communication is performed, the main processing core sends the inter-core message queue containing the command to the dynamic loading management module on the target processing core through the input monitoring agent module; the target processing core receives the inter-core message queue, processes the command and then sends the inter-core message queue containing the command execution result to the output monitoring agent module on the main processing core;
in the initialization process of the dynamic loading management module, an inter-core message queue needs to be initialized, and a message queue ID handle is set according to a processing core number.
2. The loading method according to claim 1, wherein: in the step S1, the command comprises three types of dynamic loading, dynamic refreshing and dynamic unloading;
the dynamic loading refers to downloading a binary file of a dynamic module into a memory of the multi-core processor, repositioning a symbol of the dynamic module, dynamically linking the dynamic module, and loading the dynamic module into a system for operation;
the dynamic refreshing refers to traversing a dynamic module linked list, searching and updating the name, ID, running state and running core number information of a dynamic module currently running to a dynamic loading component;
dynamic offloading refers to removing a dynamic module from the multi-core processor memory and reclaiming the memory allocated to the dynamic module.
3. The loading method according to claim 2, wherein: the dynamic loading linked list is a linked list maintained by the dynamic loading management module in the execution process of the dynamic loading command and the dynamic unloading command and is used for recording the name, ID, running state and running core number of the dynamic module.
4. The loading method according to claim 1, wherein: in S2 and S8, the dynamic loading protocol format includes a command type, a data length, a source processor number, a source processing core number, a target processor number, a target processing core number, a command, and a command execution result.
5. The loading method according to claim 1, wherein: in S5 and S7, the inter-core communication protocol format includes a message length, a message priority, a message queue ID, a target processing core number, a source processing core number, and a message body.
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