CN115525437A - Method for accelerating memory release of industrial control host of nuclear power plant - Google Patents
Method for accelerating memory release of industrial control host of nuclear power plant Download PDFInfo
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- CN115525437A CN115525437A CN202211315263.2A CN202211315263A CN115525437A CN 115525437 A CN115525437 A CN 115525437A CN 202211315263 A CN202211315263 A CN 202211315263A CN 115525437 A CN115525437 A CN 115525437A
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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
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
- G06F9/5022—Mechanisms to release resources
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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
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
- G06F9/5016—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals the resource being the memory
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Abstract
The invention discloses a method for accelerating memory release of an industrial control host of a nuclear power plant. The method finds out reasonable values of the file system cache and the process based on the condition that the current host runs normally, determines the file system cache growth condition on the basis, and finds out the process with sudden memory change. The invention can timely release unused file cache of the operating system, process leakage or unused memory by monitoring the file cache kernel and the process memory of the Windows operating system, and can ensure that the system memory ratio can still be kept below 50 percent under the conditions of abnormal file cache of the operating system and abnormal memory leakage of the process by the method for accelerating the memory release of the Windows industrial control host.
Description
Technical Field
The invention relates to the technical field of industrial control host safety, in particular to a method for accelerating memory release of an industrial control host of a nuclear power plant.
Background
The problem of memory management of the Windows Server 2008 operating system leads to the gradual increase of the memory of a file cache (also called MetaFile) of the operating system, even 100% of the system is used; exe, printer, etc. process exceptions can cause the operating system physical memory to increase to an uncontrolled step. The server and host requirements of the nuclear power plant are 50%, but due to the windows operating system memory release principle, under the condition of very low memory, the file cache of the operating system and some application-level memories cannot be released in time, so that the memory of the service or host is continuously increased and may exceed 50% of alarm threshold. Meanwhile, memory leakage is caused by exception of some application processes, so that some host memories are over 50% and alarm is given. Therefore, a method for accelerating the memory release of the industrial control host of the nuclear power plant is urgently needed, and the memory utilization rate can be reduced.
Disclosure of Invention
The invention provides a method for accelerating memory release of an industrial control host of a nuclear power plant, which comprises the following steps:
step1, installing parameters for initializing accelerated memory release in an industrial control system, wherein the parameters comprise a detection period, a memory baseline range, a memory accelerated threshold, a memory accelerated release threshold and a process normal change threshold;
step2, regularly monitoring the system memory by the industrial control host, and when the system memory of the industrial control host is in a memory baseline range, inquiring the current operating system file cache memory and each process memory, and establishing the operating system file cache memory and the memory baselines of all the processes;
step3, after establishing a memory baseline, periodically detecting a process memory, comparing the process memory and the baseline memory to mark the process type, and updating the memory baseline;
step4, the industrial control host monitors the system memory periodically, when the system memory of the industrial control host exceeds a memory acceleration threshold, the current operating system file cache memory and the memories of all processes are inquired, the process or the operating system file cache needing to be optimized is obtained according to the memory baseline, and the process or the operating system file cache to be optimized is released in an accelerated mode.
According to the method for accelerating the memory release of the industrial control host of the nuclear power plant, the process memory and the file cache of the operating system of each host are learned through the centralized management center, and then the memory baseline of a certain service system is automatically formed and issued to each industrial control host according to the artificial intelligence learning method.
The method for accelerating the memory release of the industrial control host of the nuclear power plant is characterized in that a process memory is detected periodically, and the process memory is compared with a baseline memory; if the process memory is larger than the baseline memory and smaller than the baseline memory plus the normal change threshold, the process is indicated to float within a certain controllable range, and the times that the process exceeds the baseline memory are recorded; and if the process memory is occasionally larger than the baseline memory plus the positive stubble change threshold, the process is occasionally mutated, and only the mutation times are recorded without optimizing the memory baseline.
The method for accelerating the memory release of the industrial control host of the nuclear power plant comprises the following steps of marking the process exit if the process exit is found; and if detecting that the exited process restarts, reusing the last baseline of the process.
The method for accelerating the memory release of the industrial control host of the nuclear power plant is characterized in that if a new process is started, the memory after the process is started is used as a memory baseline; if the memory baseline range exists in the system, the baseline of the process is updated after a period of time.
The method for accelerating the release of the memory of the industrial control host of the nuclear power plant comprises the following substeps in Step 4:
the industrial control host regularly monitors the memory of the system, detects whether the condition of accelerating the memory is met, and judges whether the system memory of the industrial control host exceeds the memory acceleration threshold;
if the accelerated memory condition is met, calculating the difference value between the current memory value and the baseline memory, inquiring the current operating system file cache memory and the memories of all processes, and then calculating the difference value between the current operating system file cache memory and the processes and the baseline value;
filtering the file cache or the process of the operating system with normal change through the recorded maximum value and the occurrence time of the file cache, filtering the file cache or the process of the operating system with the difference value smaller than the threshold value of the normal change, and leaving all the processes or the file caches of the operating system which need to be optimized;
calculating values of file caching and process optimization of an operating system;
and calling the NtSetSysteminformation interface of the Windows operating system to accelerate the release of the process to be optimized or the file cache of the operating system.
The method for accelerating the memory release of the industrial control host of the nuclear power plant is described above, wherein a memory value that a certain process or operating system file cache needs to be accelerated = (a difference value of the process or operating system file cache × (memory accelerated release threshold))/a sum of differences of all processes or operating system file caches to be optimized.
According to the method for accelerating the memory release of the industrial control host of the nuclear power plant, if the baseline is not established in time and the memory exceeds the memory acceleration threshold, all processes are taken as optimization objects, and the NtSetSysteminformation interface of the Windows operating system is called to accelerate the memory release to the lowest value of the memory baseline range.
The invention also provides a computer-readable storage medium, which is characterized in that the computer-readable storage medium contains one or more program instructions, and the one or more program instructions are used for a processor to execute any one of the above methods for accelerating the memory release of the nuclear power plant industrial control host.
The invention has the following beneficial effects: the invention can timely release unused file cache of the operating system, process leakage or unused memory by monitoring the file cache kernel and the process memory of the Windows operating system, and can ensure that the system memory ratio can still be kept below 50 percent under the conditions of abnormal file cache of the operating system and abnormal memory leakage of the process by the method for accelerating the memory release of the Windows industrial control host.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a flowchart of a method for accelerating memory release of an industrial control host of a nuclear power plant according to an embodiment of the present invention;
fig. 2 is a schematic view of a service system for accelerating memory release of an industrial control host of a nuclear power plant according to a second embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, an embodiment of the present invention provides a method for accelerating memory release of an industrial control host of a nuclear power plant, where a reasonable value of a file system cache and a process is found based on a normal operation condition of a current host, and on this basis, a file system cache growth condition is determined and a process with a sudden memory change is found. The method specifically comprises the following steps:
And (3) detection period: the system detects the value of the primary memory, establishes a base line according to the detection result and accelerates the memory optimization.
Memory baseline range: in the process of starting the general host to run stably, the system memory of the industrial control host can be gradually increased within a period of time and then reaches a stable value for normal work of the industrial control host. However, considering that the memory has some variation during the detection period, the lowest stable memory and the highest stable memory are combined in one period, and the range of [ lowest stable memory, highest stable memory ] is used as the "memory baseline range".
Memory acceleration threshold: the maximum allowable memory in the acceleration stage of the operation of the industrial control host is indicated, because the memory is detected regularly, the memory may change in the detection period, and in order to ensure that the maximum memory cannot exceed 50%, the memory acceleration threshold value needs to consider the change which may occur in the memory in the detection period, so the memory acceleration threshold value is generally defined by about 46%.
Memory accelerated release threshold: in order to ensure that the memory of the industrial control host does not have large shock, only a small amount of memory, such as 1% of memory, is released each time.
Normal change threshold: the file cache of the operating system, the system process and the memory of the business process on the industrial control host can be slightly changed, and the change basis is not optimized in order to ensure that the influence on the processes is reduced in the optimization process.
specifically, the industrial personal computer calls a globalmemory StatusEx interface to regularly monitor the memory of the system, and when a memory baseline range exists in the system of the industrial personal computer, a Windows operation NtQuerySysteminformation interface is called to inquire the current operating system file cache memory and the memories of all processes, and the operating system file cache memory and the memory baselines of all the processes are established.
Considering that the process memory and the operating system file cache of the same service system are basically the same, the process memory and the operating system file cache of each host are learned through a centralized management center, and then according to an artificial intelligence learning method, a memory baseline of a certain service system is automatically formed and issued to each industrial control host.
in the embodiment of the present application, after establishing the memory baseline, the following sub-steps are specifically performed:
s11, periodically detecting a process memory, and comparing the process memory with a baseline memory;
s12, if the process memory is larger than the baseline memory and smaller than the baseline memory plus the normal change threshold, indicating that the process floats within a certain controllable range, and recording the times that the process exceeds the baseline memory;
s13, if the process memory is occasionally larger than the baseline memory plus the positive stubble change threshold, the process is occasionally mutated, only the mutation times are recorded, and the memory baseline does not need to be optimized;
s14, if finding that the process exits, marking the process to exit;
s15, if detecting that the quitted process is restarted, multiplexing the last baseline of the process;
s16, if a new process is started, taking the memory after the process is started as a memory baseline; if there is a "memory baseline range" in the system, the baseline of the process is updated some time later.
specifically, step 140 includes the following sub-steps:
s21, the industrial control host calls a GlobalmemoryStatusEx interface to regularly monitor the memory of the system, and detects whether an accelerated memory condition is met, namely whether the system memory of the industrial control host exceeds a memory accelerated threshold is judged;
s22, if the accelerated memory condition is reached, calculating the difference value between the current memory value and the baseline memory, calling an NtQuerySysteminformation interface of the Windows operating system to inquire the file cache memory of the current operating system and the memories of all processes, and then calculating the difference value between the file cache of the current operating system and the process and the baseline value.
And S23, filtering the file cache or the process of the operating system with normal change according to the recorded maximum value and the occurrence time of the file cache, filtering the file cache or the process of the operating system with the difference value smaller than the normal change threshold value, and leaving all the processes or the file caches of the operating system which need to be optimized.
S24, calculating values of file caching and process optimization of the operating system; memory value that a certain process or operating system file cache needs to be accelerated = (difference value of the process or operating system file cache = memory accelerated release threshold)/sum of all process or operating system file cache differences to be optimized.
And S25, calling a Windows operating system NtSetSysteminformation interface to accelerate and release the process to be optimized or the file cache of the operating system.
The method for accelerating the memory release by the Windows industrial control host can ensure that the system memory ratio can still be kept below 50% under the conditions of abnormal file cache of the operating system and abnormal process memory leakage. Further, if the baseline is not established, the memory exceeds the memory acceleration threshold, all the processes are taken as optimization objects, and the Windows operating system NtSetSystemInformation interface is called to accelerate the memory release to the lowest value of the memory baseline range.
Example two
As shown in fig. 2, a second embodiment of the present invention provides a service system for accelerating memory release of an industrial control host of a nuclear power plant, including: the operation and maintenance management center and a plurality of industrial control hosts. The operation and maintenance management center comprises a memory baseline learning module, a memory baseline management module and a memory baseline log module; each industrial control host comprises a memory baseline learning module and a memory accelerated release module.
The memory baseline learning module of the industrial control host inputs learned baseline data into the memory accelerated release module and the memory baseline learning module of the operation and maintenance management center; the memory accelerated release module receives the baseline data of the local industrial control host baseline learning module or the memory baseline management module of the operation and maintenance management center, periodically detects the memory according to the baseline data, performs memory accelerated release according to the memory threshold value and reports logs to the memory baseline log module of the operation and maintenance management.
And a memory baseline learning module of the operation and maintenance management center reads the memories of the industrial control hosts according to the types of the service systems, receives the memories of the industrial control hosts and establishes the baselines of the service systems according to the memories of the industrial control hosts.
And the memory baseline management module of the operation and maintenance management center receives the memory baseline learned by the memory baseline learning module to the service system and issues the memory baseline to the industrial control host of the service system.
And a memory baseline log module of the operation and maintenance management center receives and displays a log of the accelerated memory release module of the industrial control host.
Correspondingly, an embodiment of the present invention provides a system for accelerating memory release of an industrial control host in a nuclear power plant, where the system includes: at least one memory and at least one processor;
the memory is to store one or more program instructions;
the processor is used for running one or more program instructions and executing a method for accelerating the memory release of the industrial control host of the nuclear power plant.
In accordance with the embodiments, the present invention provides a computer-readable storage medium, where the computer-readable storage medium contains one or more program instructions, and the one or more program instructions are used for a processor to execute a method for accelerating memory release of an industrial control host of a nuclear power plant.
The embodiment of the invention discloses a computer-readable storage medium, wherein computer program instructions are stored in the computer-readable storage medium, and when the computer program instructions are run on a computer, the computer is enabled to execute the method for accelerating the memory release of the industrial control host of the nuclear power plant.
In an embodiment of the present invention, the processor may be an integrated circuit chip having signal processing capability. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The processor reads the information in the storage medium and completes the steps of the method in combination with the hardware.
The storage medium may be a memory, for example, which may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory.
The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory.
The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), SLDRAM (SLDRAM), and Direct Rambus RAM (DRRAM).
The storage media described in connection with the embodiments of the invention are intended to comprise, without being limited to, these and any other suitable types of memory.
Those skilled in the art will appreciate that the functionality described in the present invention may be implemented in a combination of hardware and software in one or more of the examples described above. When software is applied, the corresponding functionality may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
Claims (9)
1. A method for accelerating memory release of an industrial control host of a nuclear power plant is characterized by comprising the following steps:
step1, installing parameters for initializing accelerated memory release in an industrial control system, wherein the parameters comprise a detection period, a memory baseline range, a memory accelerated threshold, a memory accelerated release threshold and a process normal change threshold;
step2, regularly monitoring the system memory by the industrial control host, and when the system memory of the industrial control host is in a memory baseline range, inquiring the current operating system file cache memory and each process memory, and establishing the operating system file cache memory and the memory baselines of all the processes;
step3, after establishing a memory baseline, periodically detecting a process memory, comparing the process memory and the baseline memory, marking the process type, and updating the memory baseline;
step4, the industrial control host monitors the system memory periodically, when the system memory of the industrial control host exceeds a memory acceleration threshold, the current operating system file cache memory and the memories of all processes are inquired, the process or the operating system file cache needing to be optimized is obtained according to the memory baseline, and the process or the operating system file cache to be optimized is released in an accelerated mode.
2. The method for accelerating the memory release of the industrial control host of the nuclear power plant as claimed in claim 1, wherein the process memory and the file cache of the operating system of each host are learned through a centralized management center, and then the memory baseline of a certain service system is automatically formed according to an artificial intelligence learning method and issued to each industrial control host.
3. The method for accelerating the memory release of the industrial control host of the nuclear power plant as claimed in claim 1, wherein the process memory is periodically detected, and the process memory is compared with the baseline memory; if the process memory is larger than the baseline memory and smaller than the baseline memory plus the normal change threshold, the process is indicated to float within a certain controllable range, and the times of the process exceeding the baseline memory are recorded; and if the process memory is occasionally larger than the baseline memory plus the positive stubble change threshold, the process is occasionally mutated, and only the mutation times are recorded without optimizing the memory baseline.
4. The method for accelerating the release of the memory of the industrial control host of the nuclear power plant as claimed in claim 1, wherein if the process exits, the process exits; and if detecting that the exited process restarts, reusing the last baseline of the process.
5. The method for accelerating the memory release of the industrial control host of the nuclear power plant as claimed in claim 1, wherein if a new process is started, the memory after the process is started is used as a memory baseline; if the memory baseline range exists in the system, the baseline of the process is updated after a period of time.
6. The method for accelerating the release of the memory of the industrial control host of the nuclear power plant as claimed in claim 1, wherein Step4 comprises the following substeps:
the industrial control host regularly monitors the memory of the system, detects whether the accelerated memory condition is reached, and judges whether the system memory of the industrial control host exceeds a memory accelerated threshold value;
if the accelerated memory condition is met, calculating the difference value between the current memory value and the baseline memory, inquiring the current operating system file cache memory and the memories of all processes, and then calculating the difference value between the current operating system file cache memory and the processes and the baseline value;
filtering the file cache or the process of the operating system with normal change according to the recorded maximum value and the occurrence time of the file cache, filtering the file cache or the process of the operating system with the difference value smaller than the threshold value of the normal change, and leaving all the processes or the file caches of the operating system which need to be optimized;
calculating values of file cache and process optimization of an operating system;
and calling the NtSetSysteminformation interface of the Windows operating system to accelerate the release of the process to be optimized or the file cache of the operating system.
7. The method as claimed in claim 6, wherein the memory value required to be accelerated in a process or operating system file cache = (difference in the process or operating system file cache = memory accelerated release threshold)/sum of all process or operating system file cache differences to be optimized.
8. The method for accelerating the memory release of the industrial control host of the nuclear power plant as claimed in claim 1, wherein if the baseline is not established in time and the memory exceeds the memory acceleration threshold, all processes are taken as optimization objects and the Windows operating system nstet systemlnformation interface is called to accelerate the memory release to the lowest value of the memory baseline range.
9. A computer-readable storage medium containing one or more program instructions for execution by a processor to perform the method for accelerating memory release for a nuclear power plant industrial control host according to any one of claims 1 to 8.
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