KR20010073689A - Method for starting a process through message queue - Google Patents

Abstract

PURPOSE: A process starting method is provided to switch a signal type process starting method into a process starting method using a message queue so that he process is inter-operable under both the NT and UNIX OS environment and can be applicable to any source or environment and make a system upgrade easy. CONSTITUTION: The method comprises steps of an SMP(System Management Processor) of a branch processor initializing an NRIF(New Relay Interface) module(S30), a process supervisor sending start instructions to a process maker via a message queue of the NRIF module and starting the process maker(S31), the process supervisor checking a state of the process maker(S32), the process supervisor sending an instruction for starting the first process designated in a configuration file to the process maker in the case that the checking result is normal(S40,S41), the process supervisor waiting for receiving a message in the case that a transmission of the first process starting instruction is successful(S50,S51), the process supervisor periodically checking the state of the process maker based on a set timer(S60), the process supervisor determining a program or system failure in the case that the process maker is not normally started(S42), and the process supervisor sending again the start instruction to the process maker in the case that an abnormal state occurs at the process maker(S62).

Description

Method for starting a process through message queue}

The present invention relates to a process starting method using a message queue implemented and compatible in both NT and UNIX by transmitting a process start command using the message queue of the NRIF module provided by the branch processor.

FIG. 1 illustrates an internal software configuration of a conventional branch processor (BP), which will be described below with reference to a flowchart of FIG. 2.

The System Management Processor (SMP) has a System Management Processor Mode (SMPMOD) to start the System Management Processor System Control Process (SMPSCP) 2 (S10), and the SMPSCP 2 is configured to execute the startup information file (1). The SMPPRO (System Management Processor Process) 3 is started with reference to the stored contents (S11), and the SMPPRO (3) started by the SMPSCP (2) receives a process start request of each SMP process and the process (4) ), And a monitoring process thereof is performed (S12).

When the SMPPRO 3 generates an event in the wait state (S20) and receives a signal (start command) in the form of a signal from the SMPSCP (2) (S21), the child process And SMPPRO (3) invokes SM_CRRET (System Management_Create Return) to transmit startup completion information to shared memory (S23). It also notifies the SMPSCP 2 when the event flag has been flagged in the Message Queue, which causes the SMPSCP 2 to send the next signal to the SMPPRO 3 to start the next process.

In the conventional process starting method as described above, the SMPPRO receives the start command in the form of a signal from the SMPSCP. This method can be implemented only in the UNIX environment because there is no signal transmitting / receiving function in the NT environment. There was an incompatible problem.

In addition, in the conventional process startup method, the implementation method is too complicated to be applied to a new site, and there are many problems.

Accordingly, an object of the present invention is to provide a method for starting a process using a message queue that can be implemented in both NT and UNIX by transmitting a process start command to a message queue instead of a signal form. Is there.

1 shows an internal software configuration of a conventional branch processor (BP),

FIG. 2 shows a flowchart of a process starting method made up of the configuration of FIG.

FIG. 3 schematically illustrates an internal software configuration of a branch processor and a function thereof in which a process for starting a process using a message queue according to the present invention is implemented.

Figure 4 shows the flow of a preferred embodiment of a process for starting a process using a message queue according to the present invention,

5 is a block diagram illustrating an internal software configuration of a branch processor in which a process activation method using a message queue according to the present invention is implemented, and other functions thereof.

※ Explanation of code for main part of drawing

1: Startup information file

2: System Management Processor System Control Process (SMPSCP)

3: SMPPRO (System Management Processor Process)

4: Process 10: Process Supervisor

20: Process Maker

In order to achieve the above object, a method of starting a process using a message queue according to the present invention includes: a branch processor internal process supervisor of a branch processor activates the branch processor internal process maker that creates and starts a process; First step to make; A second step of transmitting a process start command to the process creator through a message queue when the process creator is normally started; And a third step of receiving, processing, and performing a message relating to the process start command.

Hereinafter, an embodiment of a process starting method using a message queue according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 schematically illustrates an internal software configuration of a branch processor and a function thereof, in which a method for starting a process using a message queue according to the present invention is implemented. A process supervisor 10 for transmitting a command and the like, and a process maker 20 for receiving a command transmitted through the message queue and starting a corresponding process according to the received command. It is configured to include.

4 is a flowchart illustrating a preferred embodiment of a process activation method using a message queue according to the present invention. Hereinafter, the process activation method of FIG. 4 according to the present invention will be described in detail with reference to the software configuration of FIG. do.

First, the system management processor (SMP) of the branch processor initializes the NRIF module (S30), that is, sets an NRIF communication resource, sets an initial value for the NRIF, and sets a timer.

In this state, the process monitor 10 transmits a command to the process creator 20 to activate the process generator 20 through the message queue of the NRIF module, and thus the process creator 20 transmits the process. The monitor 10 receives a command sent from the monitor 10 and processes it, thereby starting (S31).

The process monitor 10 checks the state of the process generator 20 (S32) to check whether the process generator 20 is normally started, and when the process monitor 10 is normally started (S40), the process monitor 10 After transmitting a command to start the first process specified in 'Config' to the process creator 20 (S41), if the command transmission is successful (S50), the process monitor 10 is in a state of receiving a message. In operation S51, the controller 20 periodically monitors and checks the state of the process generator 20 based on the set timer.

The process generator 20 transmits a command received from the process monitor 10 to the process to start the process, and the process monitor 10 from the process generator 20 in a message reception wait state. The process related to the process start completion received through the message queue of the NRIF module and the message received from the system management are processed (S52), and the above-described process is performed for the next process to be started (S53).

If the process generator 20 is not normally started in the above embodiment, the process monitor 10 determines that a program or system failure has occurred and processes abnormal termination (ABEND) (S42). Monitoring confirmation result (S60) When the abnormal end of the process generator 20 is detected (S61), as described above, the process monitor 10 retransmits the start command using the message queue to the process generator 20 and FIG. As shown in FIG. 6, a restart operation for the process generator 20 and subsequent processes are performed (S62).

The process starting method using the message queue according to the present invention made as described above is compatible with both NT and UNIX by switching the signal starting method to the process starting method using the message queue, so that any source (Source), it is a useful invention that can be easily applied in any environment, and also has the effect of easy system upgrade and easy response to user requirements.

Claims (3)

In the method of starting a process in a branch processor, A first step of causing an internal process supervisor of the branch processor to start the branch processor internal process maker that creates and starts a process; A second step of transmitting a process start command to the process creator through a message queue when the process creator is normally started; And And a third step of receiving a message related to the process start command, processing the same, and performing the same. The method of claim 1, And a fourth step of sending a process monitoring command to the process creator through the message queue to monitor the status of the process. The method of claim 1, If the process creator is not normally started, periodically restarting from the first step every predetermined time set in a timer.