WO2016201620A1 - Process replacement method and device - Google Patents

Abstract

An embodiment of the invention discloses a process replacement method and device for realizing quick replacement of a faulty process without occupying excessive system memory resources and task scheduling resources. An embodiment of the present invention method comprises: a parent process creates a shadow child process for a child process; after the shadow child process is created, the shadow child process processes a preset part of a procedure and then sleeps and waits to be awakened. When the parent process detects that the child process has a fault, the parent process recalls the child process, and wakes the shadow child process; after waking, the shadow child process replaces initialized procedures apart from the preset part of the procedure, and the shadow child process is upgraded to the child process.

Description

Method and device for process replacement Technical field

The present invention relates to the field of data processing, and more particularly to a method and apparatus for process replacement.

Background technique

Whether it is communication software or Internet software, how to quickly recover business in the event of a system failure is a permanent problem for every company and developer.

In various operating systems, processes are the smallest granularity of software capability units deployed on the operating system. Of course, the process becomes the smallest unit of software capability failure, and the specified process exits abnormally, which inevitably causes the software capability carried by the process to disappear, and finally becomes a software service failure. In order to continue the normal operation of the software after the software business failure, the failure of the software system is very important. The fault-tolerance efficiency of a software system often depends on the fault-tolerance efficiency of its key software capability process, and the critical process failure of the software system is generally difficult to pass through simple user data migration due to various business scenario constraints. solved.

Currently, the main method is to deploy the same 1+1 dual process. The main process runs normally. The backup process occupies the same system resources for standby. When the main process fails, the backup process takes over the main process to continue processing the service; when the backup process also fails, the entire device service is interrupted.

In practical applications, the additional backup process that occupies the same system resources increases the memory overhead and task scheduling overhead of the system, thereby reducing the software carrying user data capacity and processing capability.

Summary of the invention

The embodiment of the invention provides a method and a device for process replacement, which are used for processing the fast replacement of a fault process without additionally occupying excessive system memory resources and task scheduling resources.

A first aspect of the embodiments of the present invention provides a method for process replacement, including:

The parent process creates a shadow process for the child process, and the shadow process is used to replace the child process when the child process fails;

After the shadow process is created, the shadow process processes the preset part of the process and sleeps waiting Wake-up, the preset part process is to pre-specify a part of the initialization process that must be processed in the succession process, and the replacement process is to replace all the initialization processes of the sub-process;

When the parent process monitors that the child process is faulty, the parent process reclaims the child process and wakes up the shadow process;

After the shadow process is awakened, the shadow process processes an initialization process in the succession process except the preset part process, and the shadow process is upgraded to the child process.

With reference to the first aspect of the embodiments of the present invention, in the first implementation manner of the first aspect of the embodiment, the step of upgrading the shadow process to the sub-process further includes:

When the parent process monitors that the shadow process is upgraded to the child process, triggering the parent process to create a shadow process for the child process.

With reference to the first aspect of the embodiment of the present invention or the first implementation manner of the first aspect, in the second implementation manner of the first aspect of the embodiment of the present disclosure, after the parent process creates a shadow process for the child process, Before the steps of the shadow process processing the preset part process, the method further includes:

The shadow process loads the executable and linkable format ELF file, and loads the preset partial dynamic library according to the description of the ELF file, where the preset part dynamic library is a part of the dynamic library pre-specified in the replacement dynamic library, Replacing the dynamic library to replace all dynamic libraries that need to be loaded by the child process;

The process of processing the preset part of the shadow process specifically includes:

The shadow process executes a pre-processing function in the preset partial dynamic library, and processes the preset part process;

After the step of waking up the shadow process, the step of the shadow process processing the initialization process except the preset part process in the succession process further includes:

The shadow process loads the replacement dynamic library except the preset partial dynamic library according to the description of the ELF file;

The process of the initialization process in the process of processing the replacement process except the preset part process specifically includes:

The shadow process executes the function other than the pre-processing function in the replacement dynamic library, and processes an initialization process in the succession process except the preset partial process.

A second aspect of the embodiments of the present invention provides a device for replacing a process, including:

a parent process module, a child process module, and a shadow process module;

The parent process module includes:

a child process creation unit, configured to create the child process module;

a shadow process creation unit, configured to create the shadow process module for the child process module, where the shadow process module is configured to take over the child process module when the child process module fails;

The shadow process module includes:

The dormant unit is configured to process the preset part process after the shadow process creation unit creates the shadow process module, and control the shadow process module to enter a sleep state to wait for wakeup, where the preset part process is pre-processed in the succession process. Specifying a part of the initialization process that must be processed, and the succession process is to replace all initialization processes of the child process module;

The parent process module further includes:

The monitoring wakeup unit is configured to: when the fault of the child process module is monitored, recover the child process module, and wake up the shadow process module in a sleep state;

The shadow process module further includes:

The processing upgrade unit is configured to process an initialization process in the succession process except the preset part process, when the shadow process module is awake by the monitoring wake-up unit, and the shadow process module is upgraded to a sub-process module.

With reference to the second aspect of the embodiments of the present invention, in the first implementation manner of the second aspect of the embodiment, the parent process module further includes:

The triggering unit is configured to trigger the shadow process creation unit when monitoring that the shadow process module is upgraded to the child process module.

With reference to the second aspect of the embodiment of the present invention or the first implementation manner of the second aspect, in the second implementation manner of the second aspect of the embodiment, the shadow process module further includes:

a first loading unit, configured to load an ELF file, and load a preset partial dynamic library according to the description of the ELF file, where the preset partial dynamic library is a part of a dynamic library pre-specified in the replacement dynamic library, and the replacement dynamic The library is all dynamic libraries that need to be loaded to replace the child process module;

The processing dormancy unit is specifically configured to: after the shadow process creation unit creates a shadow process module, execute a pre-processing function in the preset partial dynamic library loaded by the first loading unit, and process the preset part process, And controlling the shadow process module to enter a sleep state and waiting for wake-up. The preset part process is to pre-specify a part of the initialization process that must be processed in the succession process, and the replacement process In order to take over the entire initialization process of the sub-process module;

The shadow process module further includes:

a second loading unit, configured to: when the monitoring wake-up unit wakes up the shadow process module, load the replacement dynamic library except the preset partial dynamic library loaded by the first loading unit according to the description of the ELF file ;

The processing upgrade unit is specifically configured to: when the shadow process module is awakened by the monitoring wake-up unit, execute another function in the succeeding dynamic library that is loaded by the second loading unit except the pre-processing function, and the processing center In the replacement process, in addition to the initialization process except the preset part process, the shadow process module is upgraded to a sub-process module.

A third aspect of the embodiments of the present invention provides a device for replacing a process, including:

Processor and memory;

The processor is configured to perform the following operations by invoking an operation instruction stored by the memory:

Instruct the parent process to create a child process;

Instructing the parent process to create a shadow process for the child process, the shadow process being used to replace the child process when the child process fails;

After the shadow process is created, the shadow process is instructed to process a preset part of the process, and sleep is awaiting wake-up. The preset part process is to pre-specify a part of the initialization process that must be processed in the succession process, where the succession process is Replacing all initialization processes of the child process;

When the parent process monitors the child process failure, instructing the operating system kernel to reclaim the child process and waking up the shadow process;

When the shadow process is awakened, the shadow process is instructed to process an initialization process in the succession process other than the preset part process, and the shadow process is upgraded to the child process.

With reference to the third aspect of the embodiments of the present invention, in a first implementation manner of the third aspect of the embodiments, the processor further performs the following operations:

When the parent process monitors that the shadow process is upgraded to the child process, triggering the operation that indicates that the parent process creates the shadow process for the child process.

With reference to the third aspect of the embodiment of the present invention or the first implementation manner of the third aspect, in a second implementation manner of the third aspect of the embodiments, the processor performs the indication that the shadow process processing preset Before the operation of the partial process, the processor also performs the following operations:

Instructing the shadow process to load an ELF file, and loading a preset partial dynamic library according to the description of the ELF file, where the preset partial dynamic library is a part of a dynamic library pre-specified in the replacement dynamic library, and the replacement dynamic library is Replacing all the dynamic libraries that the child process needs to load;

When the processor performs the operation indicating that the shadow process processes the preset part of the process, the following operations are specifically performed:

Instructing the shadow process to execute a pre-processing function in the preset partial dynamic library that is loaded, and processing the preset part process;

The processor further performs the following operations before the processor performs the operation of instructing the shadow process to process an initialization process other than the preset part process in the succession process:

Instructing the shadow process to load the replacement dynamic library except the preset partial dynamic library according to the description of the ELF file;

When the processor performs the operation of instructing the shadow process to process the initialization process except the preset part process in the succession process, the following operations are specifically performed:

Instructing the shadow process to perform loading of the successor dynamic library other than the preprocessing function, and processing an initialization process in the succession process other than the preset part process.

As can be seen from the above technical solution, the embodiment of the present invention has the following advantages: the parent process creates a shadow process for the child process to replace the child process when the child process fails, and the shadow process only waits for the preset part process to wait for sleep. Wake-up, the preset part process is far less than all the initialization processes that need to be processed by the succeeding child process, ensuring that the shadow process only occupies very few system memory resources and task scheduling resources. When the parent process monitors the child process failure, the parent After the process recycles the child process, the shadow process is immediately awake. Since the shadow process has processed the partial initialization process that succeeds the child process, after being awakened, the process may be quickly upgraded to the child process by continuing to process the remaining initialization process. The sub-process that takes over the fault continues to process the data, ensuring that the sub-process fails to consume the least time to handle the fault replacement, and realizes the fast processing of the fault process without excessively consuming excessive system memory resources and task scheduling resources. succeed.

DRAWINGS

1 is a schematic flowchart of a method for replacing a process in an embodiment of the present invention;

2 is another schematic flowchart of a method for replacing a process in an embodiment of the present invention;

3 is a schematic diagram of a scenario of a method for process replacement in an embodiment of the present invention;

4 is a schematic diagram of another scenario of a method for replacing a process in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a device for replacing a process according to an embodiment of the present invention; FIG.

6 is another schematic structural diagram of an apparatus for replacing a process in an embodiment of the present invention;

FIG. 7 is another schematic structural diagram of an apparatus for replacing a process in an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiment of the invention provides a method and device for process replacement, which is used for processing the fast replacement of a fault process without additionally occupying excessive operating system memory resources and task scheduling resources.

It should be noted that the operating system to which the present invention is applied may be a highly reliable communication software system (embedded system) or an internet software system, such as a Linux operating system, an Android operating system, a Windows operating system, etc. The operating system can be operated on the user service processing board of the communication device, the main control board, or the Internet function server, etc., which is not limited herein.

Referring to FIG. 1, an embodiment of a method for process replacement in an embodiment of the present invention includes:

101. A parent process creates a shadow process for a child process, where the shadow process is used to replace the child process when the child process fails;

It can be understood that the child process is created for the parent process. In this step, after the parent process creates the child process, a shadow process is also created for the child process, and the shadow process is used to replace the child process when the child process fails.

It can be understood that the parent process can create a shadow process for all the child processes that are created, or a shadow process can be created only for the key processes in the created child process, which is not limited herein.

After the shadow process is created, the shadow process processes the preset part process, and sleeps and waits for the wakeup. The preset part process is to pre-specify a part of the initialization process that must be processed in the succession process, and the replacement process is performed. In order to take over the entire initialization process of the child process;

After the parent process creates the shadow process, the shadow process processes the preset part process in the elf loading stage, and sleeps and waits for the wakeup. The preset part process is a part of the initialization process that must be processed in advance in the succession process, and the replacement process is to take over. The entire initialization process of this child process.

103. When the parent process monitors that the child process is faulty, the parent process reclaims the child process and wakes up the shadow process.

In this step, the shadow process is in a dormant state. When the parent process monitors the child process failure, the parent process deactivates the child process and reclaims the child process to wake up the shadow process that takes over the child process.

After the shadow process is awakened, the shadow process processes an initialization process in the succession process except the preset part process, and the shadow process is upgraded to the child process.

After the shadow process is awakened, the shadow process processes the initialization process except the preset part process in the succession process, and after completing all the replacement processes, the shadow process is upgraded to the child process, and the process continues to be processed. Completed tasks.

In the embodiment of the present invention, the parent process creates a shadow process for the child process to replace the child process when the child process fails. The shadow process only processes the preset part process and sleeps and waits for wakeup. The preset part process is much less than the replacement process. All initialization processes that the child process needs to process ensure that the shadow process occupies only a small amount of system memory resources and task scheduling resources. When the parent process monitors the child process failure, the parent process immediately wakes up the shadow process after the child process recycles the child process. The process, because the shadow process has processed the partial initialization process that takes over the child process, after being woken up, it is only necessary to continue processing the remaining initialization process to quickly upgrade to the child process, and the succeeding child process continues to perform data processing. It ensures that the child process consumes the least time to handle the fault replacement, and realizes the rapid replacement of the fault process without excessively occupying too much system memory resources and task scheduling resources.

In the above embodiment, the shadow process is upgraded to a child process. In the actual application, after the shadow process is upgraded to the child process, the parent process can also create a shadow process for the child process. Further, in the actual application, before the replacement process is processed. The ELF file and the dynamic library may be loaded first. The following describes the method of the process in the embodiment of the present invention. Referring to FIG. 2, another embodiment of the method for replacing the process in the embodiment of the present invention includes:

201. The parent process creates a shadow process for the child process, where the shadow process is used to replace the child process when the child process fails;

It should be noted that the child process is created by the parent process or by the shadow of the child process being recycled. The process is upgraded. In this step, the parent process creates a shadow process for the child process, and the shadow process is used to replace the child process when the child process fails.

It can be understood that the parent process can create a shadow process for all the child processes that are created, or a shadow process can be created only for the key processes in the created child process, which is not limited herein.

It can be understood that the sub-process fault is reclaimed, and after the shadow process is upgraded to the sub-process, the parent process creates a shadow process for the sub-process, thus forming a fault cycle replacement technology of the sub-process and the shadow process, and the fault scene loop can be achieved. Processing, even if the upgraded child process fails again, there will be a new shadow process to take over, which will not cause the entire device business to be interrupted, ensuring the stable and continuous operation of the entire device.

202. After the shadow process is created, the shadow process loads an ELF file, and loads a preset partial dynamic library according to the description of the ELF file, where the preset partial dynamic library is a pre-specified part of the replacement dynamic library. a dynamic library, the replacement dynamic library is to replace all dynamic libraries that need to be loaded by the child process;

It should be noted that after the shadow process is created, an Executable and Linking Format (ELF) file is loaded, and the file describes a dynamic library that needs to be dependent, and the shadow process follows the description of the ELF file. The dynamic library is loaded, and the dynamic library stores the process that the shadow process needs to execute to replace the child process, and the process can be stored as a function. The dynamic process described in the ELF file can be referred to as a replacement dynamic library, and the dynamic library can be divided into multiple parts, and a part of the dynamic inventory storage must be pre-executed. Call this part of the dynamic library that must be preloaded as a preset part of the dynamic library.

It can be understood that, in the process stack space, the ELF file and the dynamic library may have a code segment, a data segment and a BSS segment, which are not limited herein.

203. The shadow process executes a pre-processing function in the preset part dynamic library, processes a preset part process, and sleeps to wait for wake-up. The preset part process is a part of an initialization process that must be specified in advance in the succession process. The succession process is to replace all initialization processes of the child process;

In the ELF loading phase, after the shadow process loads the preset partial dynamic library, the preprocessing function in the preset partial dynamic library can be processed, and the pre-processing function is processed according to the pre-processing function. It can be understood that the shadow process takes over the sub-process. All initialization processes that need to be completed are called replacement processes, where A part of the initialization process that must be processed is called a preset part process, and after the shadow process executes the preset part process, sleep waits for wake-up.

204. When the parent process monitors that the child process is faulty, the parent process reclaims the child process and wakes up the shadow process.

In this step, the shadow process is in a dormant state. When the parent process monitors the child process failure, the parent process deactivates the child process and reclaims the child process to wake up the shadow process that takes over the child process.

205. After the shadow process is awakened, the shadow process loads the replacement dynamic library except the preset partial dynamic library according to the description of the ELF file.

It can be understood that the shadow process has loaded the preset partial dynamic library described in the ELF file, and the ELF file also describes that the shadow process is replaced by the rest of the dynamic library that needs to be relied upon in the process of replacing the child process. After that, the shadow process loads the replacement dynamic library outside the preset partial dynamic library according to the description of the ELF file.

206. The shadow process executes another function in the succeeding dynamic library except the preprocessing function, and processes an initialization process in the succession process except the preset part process, where the shadow process is upgraded to the Child process.

After the shadow process loads the replacement dynamic library outside the preset dynamic library, executing the function other than the preprocessing function in the replacement dynamic library, and processing the initialization process except the preset part process in the replacement process, and completing After all the replacement processes, the shadow process is upgraded to the child process, and the task that is not completed by the child process continues to be processed.

It can be understood that after the shadow process is upgraded to be a child process, step 201 can be performed, and the parent process creates a shadow process for the child process, forming a fault cycle replacement technology of the child process and the shadow process, and ensuring all the child processes or key children. Processes always have a corresponding shadow process.

In the embodiment of the present invention, in the ELF loading phase, the shadow process first loads the preset partial dynamic library according to the description of the ELF file, executes the preset partial preprocessing function, processes the preset partial process, sleeps and waits for wakeup, and wakes up to continue. According to the description of the ELF file, the remaining relay dynamic library is loaded, the remaining functions are executed, and the remaining initialization processes are processed, which ensures that the shadow process only occupies very little system memory resources and task scheduling resources, and can quickly be used when the child process fails. The completion takes over the loading of the dynamic library, and takes over the child process to upgrade to a new child process. Further, after the shadow process is upgraded to become a child process, the parent process can also create a shadow process for the child process, thus forming a child process and shadow into The fault cycle relay technology of the process can realize the loop processing of the fault scene. Even if the upgraded child process fails again, there will be a new shadow process to take over, which will not cause the entire equipment business to be interrupted, and the stability of the whole device is guaranteed. Keep running.

For ease of understanding, the following describes the method of process replacement in the embodiment of the present invention in a specific application scenario:

As shown in Figure 3, the operating system starts, the parent process 301 creates a child process 302;

At the same time, the parent process 301 creates a shadow process 303 for the child process 302, and the shadow process completes the preset part process and sleeps to wait for wakeup;

As shown in FIG. 4, if the child process 301 fails, the parent process 301 monitors the child process 302, recovers the child process 301, and wakes up the shadow process 302. The shadow process 302 completes the subsequent initialization process and takes over the The child process 301 is upgraded to a new child process 401, and at the same time, the parent process 301 creates a shadow process 402 for the upgraded child process 401.

The following is a description of the process of the process in the embodiment of the present invention. Referring to FIG. 5, an embodiment of the device in the embodiment of the present invention includes:

a parent process module 501, a child process module 502 and a shadow process module 503;

The parent process module 501 includes:

a child process creation unit 5011, configured to create the child process module 502;

a shadow process creation unit 5012, configured to create the shadow process module 503 for the child process module 502, the shadow process module 503 is used to replace the child process module 502 when the child process module 502 fails;

The shadow process module 503 includes:

The dormant unit 5031 is configured to process the preset part process after the shadow process creation unit 5012 creates the shadow process module 503, and control the shadow process module 503 to enter a sleep state and wait for wakeup, where the preset part process is A part of the initialization process that must be processed in advance is specified in the succession process, and the replacement process is to replace all initialization processes of the child process module;

The parent process module 501 further includes:

The monitoring wakeup unit 5013 is configured to: when the subprocess module 502 is detected to be faulty, recover the subprocess module 502, and wake up the shadow process module 503 in a sleep state;

The shadow process module 503 further includes:

The processing upgrade unit 5032 is configured to process an initialization process in the succession process except the preset part process, when the shadow process module 503 is awake by the monitoring wakeup unit 5013, and the shadow process module 503 is upgraded to Child process module.

In the embodiment of the present invention, the parent process module 501 creates a shadow process module 503 for the child process module 502 to replace the child process module 502 when the child process module 502 fails. The shadow process module 503 only processes the preset part process and sleeps. Waiting for waking up, the preset part process is far less than all the initialization processes that need to be processed by the sub-process module 502, ensuring that the shadow process module 503 occupies only a small amount of system memory resources and task scheduling resources, when the parent process module 501 monitors the When the child process module 502 fails, the parent process module 501 immediately waking up the shadow process module 503 after reclaiming the child process module 502. Since the shadow process module 503 has processed the partial initialization process of the successor process module 502, After waking up, the process can be quickly upgraded to the sub-process module 502 by continuing to process the remaining initialization process. The sub-process module 502 that succeeds the fault continues to perform data processing, ensuring that the sub-process module 502 consumes the least time to handle the fault replacement, thereby realizing Without excessive use of excessive system memory resources and task scheduling resources Troubleshooting process quickly take over.

In the above embodiment, the shadow process module 503 is upgraded to the child process module 502. In the actual application, after the shadow process module 503 is upgraded to the child process module 502, the parent process may further create a shadow process for the child process module 502. In an actual application, the ELF file and the dynamic library may be loaded before the processing of the replacement process. The following describes the method of the process in the embodiment of the present invention. Referring to FIG. 6, as a device in the embodiment of the present invention, the device is replaced. In one embodiment, the shadow process module 503 further includes:

a first loading unit 601, configured to load an ELF file, and load a preset partial dynamic library according to the description of the ELF file, where the preset partial dynamic library is a part of a dynamic library pre-specified in the replacement dynamic library, the replacement The dynamic library is to replace all the dynamic libraries that need to be loaded by the child process module;

The processing sleep unit 5031 is specifically configured to: after the shadow process creation unit 5012 creates the shadow process module 503, execute a pre-processing function in the preset partial dynamic library loaded by the first loading unit 601, and process the pre-processing The partial process is controlled, and the shadow process module 503 is controlled to enter a sleep state to wait for wakeup. The preset part process is to pre-specify a part of the initialization process that must be processed in the succession process, and the succession process is to replace the sub-process module 502. All initialization process;

The shadow process module 503 further includes:

The second loading unit 602 is configured to: when the monitoring wakeup unit 5013 wakes up the shadow process module 503, load the preset part of the dynamic library loaded by the first loading unit 601 according to the description of the ELF file. Replacing the dynamic library;

The processing upgrade unit 5032 is specifically configured to: when the shadow process module 503 is awakened by the monitoring wakeup unit 5013, execute the other dynamic processing library loaded by the second loading unit 602 except the preprocessing function. a function, processing an initialization process in the succession process except the preset part process, where the shadow process module 503 is upgraded to a sub-process module;

Optionally, the parent process module 501 may further include:

The triggering unit 603 is configured to trigger the shadow process creating unit 5012 when the shadow process module 503 is upgraded to the child process module.

In the embodiment of the present invention, in the ELF loading phase, the first loading unit 5033 first loads the preset partial dynamic library according to the description of the ELF file, and the processing sleep unit 5031 executes the preset partial preprocessing function, and processes the preset partial process to sleep. Waiting for wake-up, after being woken up, the second loading unit 5034 continues to load the remaining relay dynamic libraries according to the description of the ELF file, and the processing upgrade unit 5032 executes the remaining functions and processes the remaining initialization processes, ensuring that the shadow process module 503 occupies only a small amount. The system memory resource and the task scheduling resource, and at the same time, can quickly complete the loading of the dynamic library when the child process module 502 fails, and replace the child process module 502 to become the new child process module 502. Further, after the shadow process module 503 is upgraded to the child process module 502, the triggering unit 5014 triggers the parent process module 501 to create a shadow process module 503 for the child process module 502, thus forming a fault of the child process module 502 and the shadow process module 503. The loop-replacement technology can perform the loop processing of the fault scenario. Even if the upgraded sub-process module 502 fails again, a new shadow process module 503 will be replaced to replace it, which will not cause the entire device to be interrupted, thereby ensuring the entire device. Stable and continuous operation.

Referring to FIG. 7, another embodiment of the apparatus 700 for process replacement in the embodiment of the present invention includes:

a processor 701 and a memory 702;

The processor 701 is configured to perform the following operations by calling an operation instruction stored in the memory 702:

Instruct the parent process to create a child process;

Instructing the parent process to create a shadow process for the child process, the shadow process being used to replace the child process when the child process fails;

After the shadow process is created, the shadow process is instructed to process a preset part of the process, and sleep is awaiting wake-up. The preset part process is to pre-specify a part of the initialization process that must be processed in the succession process, where the succession process is Replacing all initialization processes of the child process;

When the parent process monitors the child process failure, instructing the operating system kernel to reclaim the child process and waking up the shadow process;

When the shadow process is awakened, the shadow process is instructed to process an initialization process in the succession process other than the preset part process, and the shadow process is upgraded to the child process.

In some embodiments of the present invention, the processor 701 further performs the following operations:

When the parent process monitors that the shadow process is upgraded to the child process, triggering the operation that indicates that the parent process creates the shadow process for the child process.

In some embodiments of the present invention, before the processor 701 performs the operation of indicating the process of the preset process of the shadow process, the processor 701 further performs the following operations:

Instructing the shadow process to load an ELF file, and loading a preset partial dynamic library according to the description of the ELF file, where the preset partial dynamic library is a part of a dynamic library pre-specified in the replacement dynamic library, and the replacement dynamic library is Replacing all the dynamic libraries that the child process needs to load;

When the processor 701 performs the operation of indicating the process of the preset process of the shadow process, the processor 701 performs the following operations:

Instructing the shadow process to execute a pre-processing function in the preset partial dynamic library that is loaded, and processing the preset part process;

The processor 701 further performs the following operations before the processor 701 performs the operation of instructing the shadow process to process an initialization process other than the preset part process in the succession process:

Instructing the shadow process to load the replacement dynamic library except the preset partial dynamic library according to the description of the ELF file;

When the processor 701 performs the operation of instructing the shadow process to process the initialization process except the preset part process in the succession process, the following operations are specifically performed:

Instructing the shadow process to perform loading of the successor dynamic library other than the preprocessing function, and processing an initialization process in the succession process other than the preset part process.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment. I will not repeat them here.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not detract from the essence of the corresponding technical solutions. The spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (9)

A method of process replacement, comprising: The parent process creates a shadow process for the child process, and the shadow process is used to replace the child process when the child process fails; After the shadow process is created, the shadow process processes the preset part process and sleeps to wait for the wakeup. The preset part process is to pre-specify a part of the initialization process that must be processed in the succession process, and the replacement process is to take over. All initialization processes of the child process; When the parent process monitors that the child process is faulty, the parent process reclaims the child process and wakes up the shadow process; After the shadow process is awakened, the shadow process processes an initialization process in the succession process except the preset part process, and the shadow process is upgraded to the child process. The method according to claim 1, wherein the step of upgrading the shadow process to the child process further comprises: When the parent process monitors that the shadow process is upgraded to the child process, triggering the parent process to create a shadow process for the child process. The method according to claim 1 or 2, wherein after the step of the parent process to create a shadow process for the child process, the step of the shadow process processing the preset part process further comprises: The shadow process loads the executable and linkable format ELF file, and loads the preset partial dynamic library according to the description of the ELF file, where the preset part dynamic library is a part of the dynamic library pre-specified in the replacement dynamic library, Replacing the dynamic library to replace all dynamic libraries that need to be loaded by the child process; The process of processing the preset part of the shadow process specifically includes: The shadow process executes a pre-processing function in the preset partial dynamic library, and processes the preset part process; After the step of waking up the shadow process, the step of the shadow process processing the initialization process except the preset part process in the succession process further includes: The shadow process loads the replacement dynamic library except the preset partial dynamic library according to the description of the ELF file; The shadow process processes an initialization process in the succession process except the preset part process Specifically include: The shadow process executes the function other than the pre-processing function in the replacement dynamic library, and processes an initialization process in the succession process except the preset partial process. A device for replacing a process, comprising: a parent process module, a child process module, and a shadow process module; The parent process module includes: a child process creation unit, configured to create the child process module; a shadow process creation unit, configured to create the shadow process module for the child process module, where the shadow process module is configured to take over the child process module when the child process module fails; The shadow process module includes: The dormant unit is configured to process the preset part process after the shadow process creation unit creates the shadow process module, and control the shadow process module to enter a sleep state to wait for wakeup, where the preset part process is pre-processed in the succession process. Specifying a part of the initialization process that must be processed, and the succession process is to replace all initialization processes of the child process module; The parent process module further includes: The monitoring wakeup unit is configured to: when the fault of the child process module is monitored, recover the child process module, and wake up the shadow process module in a sleep state; The shadow process module further includes: The processing upgrade unit is configured to process an initialization process in the succession process except the preset part process, when the shadow process module is awake by the monitoring wake-up unit, and the shadow process module is upgraded to a sub-process module. The device according to claim 4, wherein the parent process module further comprises: The triggering unit is configured to trigger the shadow process creation unit when monitoring that the shadow process module is upgraded to the child process module. The device according to claim 4 or 5, wherein the shadow process module further comprises: a first loading unit, configured to load an ELF file, and load a preset partial dynamic library according to the description of the ELF file, where the preset partial dynamic library is a part of a dynamic library pre-specified in the replacement dynamic library, and the replacement dynamic The library is all dynamic libraries that need to be loaded to replace the child process module; The processing dormancy unit is specifically configured to: after the shadow process creation unit creates a shadow process module, execute a pre-processing function in the preset partial dynamic library loaded by the first loading unit, and process the preset part process, And controlling the shadow process module to enter a sleep state and waiting for wake-up. The preset part process is to pre-specify a part of the initialization process that must be processed in the succession process, where the succession process is to replace all initialization processes of the sub-process module; The shadow process module further includes: a second loading unit, configured to: when the monitoring wake-up unit wakes up the shadow process module, load the replacement dynamic library except the preset partial dynamic library loaded by the first loading unit according to the description of the ELF file ; The processing upgrade unit is specifically configured to: when the shadow process module is awakened by the monitoring wake-up unit, execute another function in the succeeding dynamic library that is loaded by the second loading unit except the pre-processing function, and the processing center In the replacement process, in addition to the initialization process except the preset part process, the shadow process module is upgraded to a sub-process module. A device for replacing a process, comprising: Processor and memory; The processor is configured to perform the following operations by invoking an operation instruction stored by the memory: Instruct the parent process to create a child process; Instructing the parent process to create a shadow process for the child process, the shadow process being used to replace the child process when the child process fails; After the shadow process is created, the shadow process is instructed to process a preset part of the process, and sleep is awaiting wake-up. The preset part process is to pre-specify a part of the initialization process that must be processed in the succession process, where the succession process is Replacing all initialization processes of the child process; When the parent process monitors the child process failure, instructing the operating system kernel to reclaim the child process and waking up the shadow process; When the shadow process is awakened, the shadow process is instructed to process an initialization process in the succession process other than the preset part process, and the shadow process is upgraded to the child process. The apparatus according to claim 7, wherein said processor further performs the following operations: When the parent process monitors that the shadow process is upgraded to the child process, triggering the indication The parent process creates an operation of the shadow process for the child process. The apparatus according to claim 7 or 8, wherein the processor further performs the following operations before the processor performs the operation of indicating the process of the preset process of the shadow process: Instructing the shadow process to load an ELF file, and loading a preset partial dynamic library according to the description of the ELF file, where the preset partial dynamic library is a part of a dynamic library pre-specified in the replacement dynamic library, and the replacement dynamic library is Replacing all the dynamic libraries that the child process needs to load; When the processor performs the operation indicating that the shadow process processes the preset part of the process, the following operations are specifically performed: Instructing the shadow process to execute a pre-processing function in the preset partial dynamic library that is loaded, and processing the preset part process; The processor further performs the following operations before the processor performs the operation of instructing the shadow process to process an initialization process other than the preset part process in the succession process: Instructing the shadow process to load the replacement dynamic library except the preset partial dynamic library according to the description of the ELF file; When the processor performs the operation of instructing the shadow process to process the initialization process except the preset part process in the succession process, the following operations are specifically performed: Instructing the shadow process to perform loading of the successor dynamic library other than the preprocessing function, and processing an initialization process in the succession process other than the preset part process.

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