CN103514076A - Application layer process monitoring method - Google Patents

Abstract

The invention provides an application layer process monitoring method. In a Linux embedded system, the key process of an application layer is monitored through the init process. According to the method, firstly, the key process is determined, secondly, the state of all processes is monitored through the init process, and if the key process quits, restarting operation is executed. According to the method, the process of the application layer is monitored through the init process, and when the key process quits, the restarting operation is executed, the quitted key process is returned to normal, and dead halt is avoided.

Description

A kind of application layer process monitoring method

Technical field

The present invention relates to Linux embedded product field, particularly the critical processes of Linux application layer is monitored to the method for processing.

Background technology

Application layer refers to top in OSI(Open Systems Interconnection) model, and for application program provides service to guarantee communication, but it is not the application program itself communicating.Process is a program that can burst out and carry out, an operational process on a data acquisition, and it is the individual that system is carried out Resource Distribution and Schedule.

Embedded product software cannot test out all bug in test process, and application layer process bug as very hidden in some may cause equipment to crash, but may need long-play could occur once, more difficult appearance on stream.Once extremely exit but appear at business process main in operational process, will cause equipment to crash, user must carry out power-off, power on equipment, and the business of equipment can be recovered normally, can cause damage to user ' s right.　

In Linux, first process of application layer is init process, at present, init process in Linux can be monitored all application layer states of a process, exiting of any process of application layer, init process all can provide print prompt, but can not take any substantial action.

Summary of the invention

The object of the invention is extremely to exit in order to realize main business process in timely processing embedded product, the problem that causes equipment to crash, avoid causing user ' s right infringement, and a kind of application layer process monitoring method providing is monitored extremely by the main business process to application layer, in main business process, have while extremely exiting, restart in time recovery, need not the manual power-off restarting of user, the existence of the imperceptible deadlock problem of user, has promoted user's experience.

Technical scheme of the present invention is: a kind of application layer process monitoring method, and in Linux embedded system, utilize init process to monitor the critical processes of application layer, in the method, first determine and then comprise the following steps critical processes:

Step 1, all states of a process of init process monitoring;

Step 2, judged whether that application layer process exits, if do not had, turned to step 1, otherwise turn to step 3;

Step 3, judge whether normally operation of critical processes, if so, turn to step 1, otherwise, turn to step 4;

Step 4, execution reboot operation.

Further, in above-mentioned application layer process monitoring method: judge in step 3 that the method whether business process normally moves is, by checking all process statuss of current operation, whether the critical processes name that adopts canonical matched and searched to pay close attention to exists;

If can match this critical processes name, this critical processes normal operation is described; Otherwise illustrate that operation is undesired.

In the present invention, utilize init process monitoring application layer process, after having critical processes to exit, carry out reboot operation, make the critical processes exiting recover normal.

Below in conjunction with specific embodiment, the present invention is described in more detail.

Accompanying drawing explanation

Fig. 1 is overall flow figure of the present invention.

Embodiment

Embodiment 1, and the present embodiment is a kind of application layer process monitoring method, in Linux embedded system, utilizes init process to monitor the critical processes of application layer, first determines and then comprise the following steps critical processes: as shown in Figure 1 in the method.

Step 1, all states of a process of init process monitoring.For the operation of linux system, init program is the first program of application layer operation, the exiting of any process of application layer, and init process all can provide print prompt, but can not take any substantial action.

Step 2, judged whether that application layer process exits, if do not had, turned to step 1, otherwise turn to step 3;

Step 3, judge whether critical processes exits, if so, turn to step 4, otherwise, turn to step 1;

Step 4, execution reboot operation.

Because init process is first process that Linux application layer pulls up, this process is hung, and equipment will inevitably be restarted, so realize all application layer critical processes monitoring mechanisms in the init of Busybox process, is the most reliable.

The present embodiment is monitored critical processes in Linux application layer, finds to carry out autoboot operation when key business process exits, and improving product stability and user experience.

Concrete steps:

In 1, init process, all states of a process can be monitored, if exit, specific branch can be entered

/*?Wait?for?a?child?process?to?exit?*/

wpid?=?wait(NULL);

while?(wpid?>?0)?{

When/* has process to exit, can enter this partial code */

}

2, whether the process that judgement is exited is the critical processes that product is paid close attention to.This step is exactly by checking that critical processes is whether also in the process of normal operation, specific as follows:

Judge that the method whether business process normally moves is, by " " all process statuss of current operation are checked in order to ps – ax, further " ps – ax is " in the output of order, whether the critical processes name of paying close attention to by canonical matched and searched (for software, process name is essentially a character string) exists.

If can match this critical processes name, critical processes normal operation is described; Otherwise illustrate that operation is undesired.

3, if critical processes has exited, carry out reboot operation, otherwise ignore this monitor message.

Claims (2)

1. an application layer process monitoring method, in Linux embedded system, utilizes init process to monitor the critical processes of application layer, it is characterized in that: in the method, first determine and then comprise the following steps critical processes:

Step 1, all states of a process of init process monitoring;

Step 2, judged whether that application layer process exits, if do not had, turned to step 1, otherwise turn to step 3;

Step 3, judge whether normally operation of critical processes, if so, turn to step 1, otherwise, turn to step 4;

Step 4, execution reboot operation.

2. application layer process monitoring method according to claim 1, it is characterized in that: in step 3, judge that the method whether business process normally moves is, by checking all process statuss of current operation, whether the critical processes name that adopts canonical matched and searched to pay close attention to exists;

If can match this critical processes name, this critical processes normal operation is described; Otherwise illustrate that operation is undesired.

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