JP6919399B2 - Judgment program, information processing device, and judgment method - Google Patents

Description

The present invention relates to a determination program, an information processing device, and a determination method.

In a system in which multiple processes operate in cooperation with each other, the processes may have a dependency relationship for exchanging information with each other. Then, if the process has a dependency, the process startup is executed in the order according to the dependency. For example, if a process operates while accessing another process while it is running, the startup of that process waits until the startup of another process is completed, and is executed when the startup of another process is completed.

For example, on a platform such as a Platform as a Service (PaaS) platform, there is a monitoring process for detecting the completion of process startup. The monitoring process, for example, detects the start of the monitored process and the completion of the start based on the setting of the setting information created for the monitored process. For example, when the monitored process opens a port when the startup is completed or outputs a specific log when the startup is completed, the port information released in the setting information and the specific output when the startup is completed Log information is registered. Then, the monitoring process monitors, for example, the port registered in the setting information to detect the opening of the port, or monitors the log and detects that a specific log registered in the setting information is output. Detect the completion of process startup.

Japanese Unexamined Patent Publication No. 2010-257150 Japanese Unexamined Patent Publication No. 2010-182016 Japanese Unexamined Patent Publication No. 11-327951

However, for example, when setting information is created according to the specifications of each process in order to detect the completion of process startup, it takes time and effort.

In one aspect, it is an object of the present invention to provide a versatile technique for detecting the completion of process startup.

The determination program according to one aspect of the present invention includes first information indicating the content of the process executed by the process started in response to the start instruction at the first time, and the content of the process executed by the process at the second time. The computer is made to execute the process of acquiring the second information indicating the above and determining whether or not the process start process is completed based on the comparison result of the acquired first information and the second information.

It is possible to provide a highly versatile technique for detecting the completion of process startup.

It is a figure which illustrates the dependency relationship between processes. It is a figure which illustrates the system which a plurality of processes operate in cooperation with each other. It is a figure which illustrates the block structure of the information processing apparatus which concerns on embodiment. It is a figure which illustrates the difference of a thread dump. It is a figure which illustrates the time change of the difference of a thread dump. It is a figure which illustrates the start completion determination process of the process which concerns on embodiment. It is a figure which illustrates the setting information. It is a figure which illustrates the start completion determination process of the process which concerns on the modification. It is a figure which illustrates the hardware configuration of the computer for realizing the information processing apparatus which concerns on embodiment.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the drawings. The same reference numerals are given to the corresponding elements in the plurality of drawings.

FIG. 1 is a diagram illustrating the dependencies between processes. In FIG. 1, the process B that operates by executing the program B operates while accessing the process A that operates by executing the program A. Here, during the period from the start of the start of the process A to the completion of the start process of the process A, the process B cannot access the process A and cannot acquire information from the process A. Therefore, it is desirable that the start of the process B is waited until the start of the process A is completed, and the start of the process B is executed after the start of the process A is completed. It should be noted that the completion of the start-up process may mean that the process is in a state where it can accept requests from the outside such as other processes.

Therefore, when the process has a dependency, it is detected that the start of the process is completed. For example, in a system such as a PaaS platform in which a plurality of processes operate in cooperation with each other, the monitoring process monitors the process and detects that the start of the process is completed.

FIG. 2 is a diagram illustrating a system 200 in which a plurality of processes operate in cooperation with each other. FIG. 2 shows a monitoring process 201 and a plurality of processes 202. There is a dependency between the plurality of processes 202 for exchanging information between the processes. Therefore, the process 202 is started in the order according to the dependency. Then, the process 202 may be provided with the setting information. The monitoring process 201 refers to the setting information and executes a start command of the process 202 to be monitored to start the process according to the contents registered in the setting information, or controls the retry of the start when the start fails. Or

Further, for example, the monitoring process 201 monitors the completion of process startup based on the setting of the setting information created for the process 202. As an example, a process may open a port upon completion of startup. When the process 202 for opening such a port is the monitoring target for the completion of activation, the monitoring process 201 may monitor the port, and when the opening of the port is detected, it may be determined that the activation of the process 202 is completed. Alternatively, for example, the process may output a predetermined log as the startup is completed. When the process that outputs such a predetermined log is the monitoring target of the start completion, the monitoring process 201 monitors the output of the log from the process 202, and when it detects that the predetermined log has been output, the process is started. May be determined to be complete. For example, as described above, the monitoring process 201 can detect the completion of the activation of the process 202 to be monitored according to the setting of the setting information.

However, the information indicating the completion of starting the process 202, such as opening the port and outputting the log, may be different for each process 202. Therefore, setting information is prepared for each process 202, which is a complicated work. Further, depending on the process 202, it may be difficult to obtain appropriate information indicating that the process 202 has been started. Therefore, it is desired to provide a further technique for determining the completion of starting the process 202. Hereinafter, embodiments will be described in more detail.

FIG. 3 is a diagram illustrating a block configuration of the information processing apparatus 300 that executes the activation completion determination process of the process 202 according to the embodiment. The information processing device 300 may be, for example, a computer such as a server computer, a personal computer (PC), a notebook PC, a smartphone, a tablet terminal, and a mobile phone. The information processing device 300 includes, for example, a control unit 301 and a storage unit 302. The control unit 301 includes, for example, an activation unit 311, an acquisition unit 312, a determination unit 313, and an execution unit 314. The storage unit 302 of the information processing device 300 stores information such as setting information 700, which will be described later, for example. The details of each of these units and the details of the information stored in the storage unit 302 will be described later.

Subsequently, the activation completion determination process according to the embodiment will be described. In the embodiment described below, the control unit 301 compares the thread dump of the monitored process acquired at a certain time with the thread dump of the monitored process acquired at another time. Then, the control unit 301 determines that the start of the process is completed when the time change of the thread dump becomes small as a result of the comparison. Note that the thread dump is, for example, snapshot data that outputs information on a function operating inside a thread for each one or a plurality of threads executed in the process, including the function call relationship. be. For example, the thread dump may include information indicating the function being executed and the instruction being executed in the function (for example, the line number in the program) for each thread. The function may be called, for example, a method, a function, a subroutine, or the like.

FIG. 4 is a diagram illustrating the difference between thread dumps. FIG. 4 shows a thread dump at the first time and a thread dump at the second time. The second time may be a time after a predetermined time has elapsed from the first time. The thread dump at the first time contains, for example, four functions in thread 1, and represents a call relationship in which function D calls function C, function C calls function B, and function B calls function A. There is. Then, at the second time, the function B is changed to the function B', and the function A is changed to the function A'. Therefore, in thread 1, the difference is extracted for the function A and the function B. On the other hand, since the function C and the function D are not operating from the first time to the second time and there is no difference in the thread dump, the difference is not output. For example, the control unit 301 may calculate the difference for each thread in this way and use it as the difference of the thread dump. By taking the difference of the thread dump, the control unit 301 can extract only the functions that are actually executed and the execution contents are changed from the functions called in the process.

FIG. 5 is a diagram illustrating the time change of the difference of the thread dump. FIG. 5 shows the difference between the thread dumps acquired at four times (time 1 to time 4) after the start of the process. For example, the difference between the thread dumps at time 1 is the thread dump acquired at the first time after a predetermined time has elapsed after the start of startup and the thread dump at the second time after a predetermined time has elapsed from the first time. It may be the difference between. Further, the difference at time 2 may be the difference between the thread dump at the second time and the thread dump at the third time after a predetermined time has elapsed from the second time. Similarly, the difference between the thread dump after the lapse of a predetermined time and the thread dump acquired immediately before may be acquired at time 3 and time 4.

Then, as shown in FIG. 5, the difference in the thread dump decreases with the passage of time after the start of startup, and the difference disappears in the example shown at time 4. For example, when a process is started, various functions are called, so the difference tends to be large. On the other hand, when the start of a process is completed, the process is often in a state of waiting for some action, such as a state of waiting for a request from another process. In the wait state, the thread dump difference tends to be small. Therefore, if the difference between the thread dumps becomes small, it can be determined that the process startup is completed. For example, the control unit 301 may determine that the thread dump difference is small when the value indicating the amount of the thread dump difference is equal to or less than a predetermined threshold value. An example of acquiring a thread dump at predetermined time intervals has been described, but the embodiment is not limited to this, and in another embodiment, the thread dump is not periodically performed but at an irregular predetermined timing. A thread dump may be obtained.

FIG. 6 is a diagram illustrating an activation completion determination process of the process 202 according to the embodiment. The control unit 301 may start the operation flow of FIG. 6 when, for example, an instruction to start the process 202 is input. The instruction to start the process 202 may be, for example, an start instruction instructing the start of a plurality of processes 202, or an start instruction set to notify after the completion of the start.

In step 601 (hereinafter, the step is referred to as "S" and, for example, S601), the control unit 301 determines the activation order. For example, when the start instruction of the process 202 is a start instruction for starting a plurality of processes 202, the control unit 301 refers to the setting information 700 corresponding to the plurality of processes 202 to which the start instructions are input.

FIG. 7 is a diagram illustrating the setting information 700. The setting information 700 may be registered with settings for the process 202, and may include, for example, information on a dependent process that depends on the operation. For example, FIG. 7 illustrates the setting information 700 in which the settings for the process B are registered, and it is shown that the process B depends on the process A.

Then, in S601, the control unit 301 refers to, for example, the setting information 700 corresponding to the plurality of processes 202 to which the start instruction is input. The control unit 301 starts the process 202 that depends on the other process 202 after waiting for the completion of starting the dependent process 202, based on the reference plurality of processes 202 and the corresponding setting information 700. , The boot order may be determined. For example, for the process 202 having no dependency, the control unit 301 may assign the first order and determine the start order so that the processes 202 are started in parallel. Further, for example, when a start instruction for starting one process 202 is input, the control unit 301 does not have to determine the start order.

In S602, the control unit 301 executes the start command of the process 202 to which the first order is assigned in the start order determined in S601 to start the process 202. When an start instruction for starting one process 202 is input, the control unit 301 may start the process 202.

In S603, the control unit 301 determines whether or not there is a waiting for the start completion of the process 202. For example, if the control unit 301 has a dependency of the process 202 in the activation order determined in S601 and there is a process 202 to be activated after the activation of the dependent process 202 is completed, the control unit 301 may determine YES in S603. Further, for example, if the input start instruction in S603 is a start instruction set to be notified after the start is completed, the control unit 301 may determine YES in S603. On the other hand, if there is no dependency of the process 202 in the start-up order determined in S601, or if the start-up instruction is not a start-up instruction set to notify after the start-up is completed, the control unit 301 determines NO in S603. This operation flow may be terminated. If YES in S603, the flow proceeds to S604.

In S604, the control unit 301 acquires a thread dump of the process 202 on which the process 202 having the dependency is dependent from the process 202 started in S602. The processing of S604 to S606 is a repetitive processing, and when the processing of S604 is re-executed by repetition, the control unit 301 may acquire a thread dump after a predetermined time has elapsed from the previous execution.

In S605, the control unit 301 compares the data of the thread dump acquired last time with the thread dump acquired this time in the repetition of the processes of S604 to S606, and acquires a value indicating the amount of difference. For example, when the thread dump is output as text data, the control unit 301 compares the character strings between the thread dump acquired last time and the thread dump acquired this time, and indicates the number of non-matching characters as the amount of difference. May be obtained as. In one example, the control unit 301 may extract the number of non-matching characters by comparing the entire thread dump and use it as a value indicating the amount of difference. Alternatively, when the control unit 301 can identify each thread included in the thread dump by the number assigned to the thread or the like, the control unit 301 compares the character strings for each thread, extracts the number of non-matching characters, and the amount of the difference. It may be used as a value indicating. Furthermore, the value indicating the amount of difference may be the number of lines containing non-matching characters in the two thread dumps to be compared, or includes non-matching characters with respect to the total number of lines in the thread dump. It may be expressed as a percentage of rows.

In S606, the control unit 301 determines whether or not the value indicating the amount of difference is equal to or less than a predetermined threshold value. The predetermined threshold value may be set according to the type of value indicating the amount of difference, and if it is equal to or less than the threshold value, it may be set to a value at which the process startup is likely to be completed. For example, if a thread function has entered a wait state and has stopped processing, the difference for that function will be zero. On the other hand, if the thread's function waits in an infinite loop, for example, until a given result is obtained, the difference for that function will not be zero. Therefore, the threshold value may be set to a value that can determine that the activation is completed in consideration of the case where the difference does not become 0 but the activation is completed as in such an infinite loop. For example, the threshold value may be determined by a rule of thumb from the tendency of acquiring a value indicating the amount of difference in the thread dump in the startup completion state of various existing programs.

If the value indicating the amount of difference in S606 is not equal to or less than a predetermined threshold value (S606 is NO), the flow returns to S604. The thread dump is acquired again after a predetermined time has elapsed since the previous acquisition of the thread dump. On the other hand, when the value indicating the amount of difference in S606 is equal to or less than a predetermined threshold value (YES in S604), the flow proceeds to S607.

In S607, the control unit 301 executes a process to be executed after the start of the monitored process is completed. The process to be executed after the start of the monitored process is completed is, for example, starting the process 202 having a dependency relationship with the monitored process 202 such as another process 202 that accesses the monitored process 202 and executes the process. It may be a process to be performed. Alternatively, the process to be executed after the start of the monitored process 202 is completed may be a process to execute a new command such as sending a request to the started process 202. Further, the process to be executed after the start of the monitored process 202 is completed may be a process of notifying the user that the start of the process is completed. In this case, the control unit 301 displays, for example, a message indicating that the start of the process 202 is completed on the display screen of the display device connected to the information processing device 300, or is connected to the information processing device 300. Sound may be output from the audio output device.

In S608, the control unit 301 determines whether or not the activation of all the processes 202 waiting for the completion of activation has been completed. If all the processes 202 waiting to be started have not been started (S608 is NO), the flow returns to S604, and for example, the process 202 newly started in S607 is monitored and a thread dump is acquired. , Continue processing. On the other hand, when all the processes 202 waiting for the completion of startup have been started (YES in S608), this operation flow ends.

As described above, according to the embodiment, the control unit 301 includes a thread dump indicating the content of the process executed by the process 202 started in response to the start instruction at the first time, and the second time. Get a thread dump that shows the contents of the process being executed. Then, the control unit 301 determines whether or not the process start processing is completed based on the comparison result of the two acquired thread dumps. Therefore, for example, as in the example described with reference to FIG. 2, it is not necessary to register the information for executing the start completion determination for each process in the setting information, and the start completion determination is executed. be able to. Therefore, it is possible to reduce the labor and cost required for determining the completion of activation. Further, for example, even if it is a process 202 in which it is difficult to acquire information indicating the completion of the start of the process 202 such as opening a port or outputting a log, a thread dump can be obtained regardless of the specifications of the process 202, so that the process 202 is started. It is possible to determine the completion of.

In the above-described embodiment, the thread dumps are acquired at different times, and the information indicating the magnitude of the difference between the acquired thread dumps at different times is acquired to determine the start completion. Therefore, for example, it is possible to determine the completion of the start of the process 202 without individually defining and determining the information indicating the thread dump state at the time of completion of the start for each process 202.

Therefore, according to the above-described embodiment, it is possible to reduce the cost for determining the completion of process startup.

<Modification example>
In the above-described embodiment, when the value indicating the amount of difference is equal to or less than a predetermined threshold value, it is determined that the start of the process 202 to be monitored is completed. However, for example, depending on the processing to be executed, the difference may increase again after the amount of the difference temporarily decreases. Therefore, in the modified example, the control unit 301 determines that the start of the process 202 is completed when the state in which the value indicating the amount of difference is equal to or less than the predetermined threshold value continues for a predetermined time or longer.

FIG. 8 is a diagram illustrating a process activation completion determination process according to a modified example. For example, when an instruction to start the process 202 is input, the control unit 301 may start the operation flow of FIG. 8 according to the modified example. The instruction to start the process 202 may be, for example, an start instruction instructing the start of a plurality of processes 202, or an start instruction set to notify after the completion of the start.

The operation flow process of FIG. 8 may execute a process corresponding to the operation flow process of FIG. 6, for example, in S801 to S806, the control unit 301 performs the same process as S601 to S606 of FIG. You may do it.

Then, when the value indicating the amount of difference in S806 is equal to or less than a predetermined threshold value (YES in S806), the flow proceeds to S807. In S807, the control unit 301 determines whether or not the state in which the value indicating the amount of difference is equal to or less than a predetermined threshold value continues for a predetermined time or longer. If the value indicating the amount of difference is not equal to or less than a predetermined threshold value for a predetermined time or longer (NO in S807), the flow returns to S804, and a thread dump is acquired again after a predetermined time has elapsed from the acquisition of the previous thread dump. And repeat the process. On the other hand, when the state in which the value indicating the amount of difference is equal to or less than the predetermined threshold value continues for a predetermined time or longer (YES in S807), the flow proceeds to S808, and the control unit 301 performs the monitoring target process 202 after the activation of the process 202 is completed. Execute the process to be executed.

Then, in S809, the control unit 301 may execute the same process as in S608 of FIG. 6, and this operation flow may be terminated.

As described above, in the modified example, the control unit 301 determines that the start of the process is completed when the state in which the value indicating the amount of difference is equal to or less than a predetermined threshold value continues for a predetermined time or longer. Therefore, in the modified example, in addition to the effect of the first embodiment, for example, when the difference of the thread dump decreases once and then increases again, it is determined that the process startup is completed by mistake. Can be deterred. Therefore, according to the modification, it is possible to more accurately determine the completion of process startup.

In the above-described embodiment, for example, in the processes of S601 to S602 of FIG. 6 and S801 to S802 of FIG. 8, the control unit 301 operates as, for example, the activation unit 311. Further, the control unit 301 operates as an acquisition unit in the processing of S604 of FIG. 6 and S804 of FIG. 8, for example. The control unit 301 operates as a determination unit in, for example, in the processes of S606 in FIG. 6 and S806 to S807 in FIG. The control unit 301 operates as an execution unit in the processing of S607 of FIG. 6 and S808 of FIG. 8, for example.

Further, at least a part of the processes shown in the operation flows of FIGS. 6 and 8 described above may be executed by the monitoring process 201 implemented on a platform such as a Platform as a Service, and the startup completion determination separately implemented may be executed. The determination process that executes the process may be executed. For example, the above-mentioned activation unit 311 may be implemented in the monitoring process 201, and the monitoring process 201 may execute the processes of S601 to S603 in FIG. 6 or S801 to S803 in FIG. Then, when the monitoring process 201 determines YES in S603 or S803, a determination process implemented separately from the monitoring process 201 may be requested to determine whether or not the process has been started. Then, when the determination process receives the request, the determination process may execute the processes of S604 or later in FIG. 6 or S804 or later in FIG. That is, in the embodiment, for example, the functions of an existing platform such as a PaaS platform may be used for a part of the above-mentioned operation flow.

Although the embodiments have been illustrated above, the embodiments are not limited thereto. For example, the above-mentioned operation flow is an example, and the embodiment is not limited thereto. When possible, the operation flow may be executed by changing the order of processing, may include additional processing, or may omit some processing.

FIG. 9 is a diagram illustrating a hardware configuration of a computer 900 for realizing the information processing apparatus 300 according to the embodiment. The hardware configuration for realizing the information processing device 300 of FIG. 9 includes, for example, a processor 901, a memory 902, a storage device 903, a reading device 904, a communication interface 906, and an input / output interface 907. The processor 901, the memory 902, the storage device 903, the reading device 904, the communication interface 906, and the input / output interface 907 are connected to each other via, for example, the bus 908.

The processor 901 may be, for example, a single processor, a multiprocessor, or a multicore. The processor 901 provides a part or all the functions of each of the control units 301 described above by executing, for example, a determination program describing the procedure of the operation flow described above using the memory 902. For example, the processor 901 may operate as an activation unit 31, an acquisition unit 312, a determination unit 313, and an execution unit 314 by reading and executing a program. Further, in one embodiment, the processor 901 may operate as the system 200 by reading and executing the program.

The memory 902 is, for example, a semiconductor memory, and may include a RAM area and a ROM area. The storage device 903 is, for example, a semiconductor memory such as a hard disk or a flash memory, or an external storage device. RAM is an abbreviation for Random Access Memory. ROM is an abbreviation for Read Only Memory.

The reader 904 accesses the removable storage medium 905 according to the instructions of the processor 901. The removable storage medium 905 includes, for example, a semiconductor device (USB memory, etc.), a medium (magnetic disk, etc.) to which information is input / output by magnetic action, and a medium (CD-ROM, etc.) to which information is input / output by optical action. It is realized by DVD etc.). USB is an abbreviation for Universal Serial Bus. CD is an abbreviation for Compact Disc. DVD is an abbreviation for Digital Versatile Disk.

The storage unit 302 described above includes, for example, a memory 902, a storage device 903, and a removable storage medium 905. For example, the setting information 700 is stored in the storage device 903 of the information processing device 300.

The communication interface 906 connects to another device via a network or directly to another device according to the instructions of the processor 901, and transmits / receives data to / from the other device. The input / output interface 907 may be, for example, an interface between an input device and an output device. The input device is, for example, a device such as a keyboard or a mouse that receives an instruction from a user. The output device is, for example, a display device such as a display and an audio device such as a speaker.

Each program according to the embodiment is provided to the information processing apparatus 300 in the following form, for example.
(1) It is pre-installed in the storage device 903.
(2) Provided by the removable storage medium 905.
(3) It is provided from a server such as a program server.

The hardware configuration of the computer 900 for realizing the information processing apparatus 300 described with reference to FIG. 9 is an example, and the embodiment is not limited thereto. For example, some or all the functions of the above-mentioned control unit 301 may be implemented as hardware by FPGA, SoC, or the like. FPGA is an abbreviation for Field Programmable Gate Array. SoC is an abbreviation for System-on-a-chip.

In the above, some embodiments will be described. However, the embodiments are not limited to the above embodiments, and should be understood to include various modifications and alternatives of the above embodiments. For example, it will be understood that various embodiments can be embodied by modifying the components within a range that does not deviate from the purpose and scope. Further, it will be understood that various embodiments can be implemented by appropriately combining the plurality of components disclosed in the above-described embodiments. Further, various embodiments are implemented by removing or replacing some components from all the components shown in the embodiments, or by adding some components to the components shown in the embodiments. Those skilled in the art will understand that it can be done.

200 System 201 Monitoring process 202 Process 300 Information processing device 301 Control unit 302 Storage unit 311 Activation unit 312 Acquisition unit 313 Judgment unit 314 Execution unit 900 Computer 901 Processor 902 Memory 903 Storage device 904 Reading device 905 Detachable storage medium 906 Communication interface 907 I / O interface 908 bus

Claims (5)

Acquires the first information indicating the content of the process executed by the process started in response to the start instruction at the first time and the second information indicating the content of the process executed by the process at the second time. ,
Based on the acquired comparison result of the first information and the second information, it is determined whether or not the start processing of the process is completed.
A judgment program that causes a computer to execute processing. The determination process is a process of starting the process when the state in which the value representing the magnitude of the difference between the first information and the second information is equal to or less than a predetermined threshold value continues for a predetermined time or longer. Judges as completed,
The determination program according to claim 1, wherein the determination program is characterized by the above. The first information includes information on a function executed by each of one or more threads executing in the process at the first time.
The second information includes information on a function executed by each of one or more threads executing in the process at the second time.
In the determination process, the first information and the second information are compared for each thread to determine whether or not the start processing of the process is completed.
The determination program according to claim 1 or 2, wherein the determination program is characterized by the above. Acquires the first information indicating the content of the process executed by the process started in response to the start instruction at the first time and the second information indicating the content of the process executed by the process at the second time. Acquisition department,
A determination unit that determines whether or not the start processing of the process is completed based on the acquired comparison result of the first information and the second information.
Information processing equipment including. Acquires the first information indicating the content of the process executed by the process started in response to the start instruction at the first time and the second information indicating the content of the process executed by the process at the second time. death,
Based on the acquired comparison result of the first information and the second information, it is determined whether or not the start processing of the process is completed.
Judgment methods performed by the computer, including.

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