JPS5977553A - Data gathering system - Google Patents

Abstract

PURPOSE:To enhance the efficiency of a trace memory to reduce the memory capacity, by adding a slight hardware to a data gathering device to minimize the burden of a computer and making it possible to trace only a specific program. CONSTITUTION:An operation processing device 1, a main storage device 2, and an I/O controller 3 are connected to a common bus 4, and a data gathering device 5 is connected to this bus 4, thus constituting a data gathering system. This device 5 is provided with a data gathering control circuit 6, a data gathering memory 7, a program level register 10, a comparator 11, a trace level register 12, an OR gate 15, etc. An operating program level signal A is stored in the register 10, and the value of the register 12 set by an input device 14 is compared with the level signal A by the comparator 11; and if they coincide with each other, a coincidence signal B is applied to the gate 15. The output of the gate 15 is inputted to the circuit 6 to make it possible to trace only a specific program, and data gathering is indicated on an indicator lamp 13, thus improving the efficiency of the memory 7.

Description

[Detailed Description of the Invention] Technical field of the invention [1] 1 relates to a program execution tracing method in 81 machines (=), especially in this kind of data collection for the purpose of program depacking, failure analysis, operation monitoring, etc. , task activation, and 4) Bluegen calling, which are related to data collection methods that not only collect all data regardless of the program configuration, but also collect only the execution data of one program, eliminating the complexity of data analysis. It is.

This type of data collection method is generally used to collect data on a common bus 4 as shown in Figure 1 (a method in which a male device 5 is connected to collect data on the common bus 4 is widely used) This method is based on computer hardware.

It is possible to collect data without putting a burden on the software, and the data collection device 5 sequentially collects the execution data.
The data can be stored in the data collection memory 7 within the computer.

Collecting data and storing the data in the 111 table of contents data collection memory 7 is hereinafter referred to as tracing.

In FIG. 1, 1 is an arithmetic processing unit, 2 is a main memory α,
6 is an I10 control device, 6 is a data collection control circuit, 8 is a printer, and 9 is a display.

Prior Art and Problems In the conventional data collection method, since the data on the common bus 4 is traced in such a way that the program qualifications such as interrupt level and task signature are all < 1! or when another program is called, the traced contents are the data of each of the two programs P1 and P2, ri, . The content is a mixture of y2 and y. In FIG. 2 α, x1→y−→x2 is the flow of program execution, and AI in the second diagram is the contents of the data collection memory 7. If you want to know only the execution result of executing the -C program, for example, from the collected data M shown in the example of FIG. 2, data x1. It is necessary to perform the complicated work of extracting x2 from the traced content A4. Also, the efficiency of trace memory is poor, and there are concerns about how thick the trace memory is.1. It had the disadvantage of being ugly.

Purpose of the Invention The present invention eliminates the drawbacks of the prior art, minimizes the burden on the computer, and makes it possible to trace only a specific program, thereby increasing the efficiency of trace memory and reducing the complexity of data analysis. In order to eliminate this problem, the present invention provides a data collection method that allows selection information for a specific program to be set from an external device.

Embodiment of the invention FIG. 4 shows an embodiment of the invention. The same symbols as in FIG. 1 indicate the same parts. 10 is a program level register, 11
is a comparator, 12 is a trace level specification register, 16 is a data collection indicator lamp, 14 is an input device, 15 is an OR
A is a program level signal, B is a level match signal, C is a trace valid signal, D is an address and data signal, and E is a level judgment invalid signal. The operation will be explained below. The following items (A) to (1)) are A in the $4 diagram.
-D corresponds to each signal.

(A) In general, when a certain program is running, an interrupt with a higher level of urgency (if an interrupt occurs, a current interrupt that indicates what qualifications the program has and in what state it is operating) - After retiring the program status information, set the program status of the level corresponding to the interrupt to the current program status, process the program with high urgency, and after that process is completed, when an interrupt occurs Interrupt control is performed by restoring the program status to the current program status.In this way, when setting and restoring the current program status, the operating program level signal A is transferred to the 1m bus 4.
through the program level register 101 of the data collection device 5.

(B) The value of the program level register 10 and the value of the trace level designation register 12 set by the input device 14 are input to the comparator 110, and when the values of the two registers 10 and 12 match, Compare level matching signal B! It is output from a11.

(C) When the output is "1", all data tracing is performed as before, and when the output is "LD", the level match signal B
OR the level judgment invalid signal E and the level match signal H, which indicates that data tracing is performed only while the is being output.
The trace enable signal C is generated by the R gate 15. The trace enable signal C becomes an input to the data collection control circuit 6 and also serves as an input to the data collection indicator lamp 160.

(D) If the trace valid signal C is "1", the data collection control circuit 6 stores the address and data signal of the common bus 4 into the data collection memory 7.

From the above operations (A) to (II) (2), the necessary data can be directly obtained without the complicated extraction work shown in FIG.

That is, the present invention collects common bus data of W1 computers,
The collected data is output to an external device and the program flow and execution results are known in a total of 1λ machine system.
Comparing the contents of the embodiment (corresponding to the trace level designation register 12 in the second embodiment) and the contents of the execution program condition register (program level register 10 (target) in the embodiment) that stores the qualification of the currently executing program, By using the coincidence signal for trace control, this data collection method continuously traces only program information that conforms to externally specified conditions, regardless of intermediate interruptions or branches.

The condition setting register sets the conditions of a program to be checked from an external device. The setting conditions may be program level, program number, task number, address & item, stack level, path priority level, or any other information available inside the computer. Further, the method for reading data into the register from the execution program condition register 81 may be through a common path, or by directly reading the contents of the data held therein.

As with the condition setting register, various conditions can be considered as the conditions, and it is also conceivable to prepare a plurality of conditions in order to incorporate each condition.

As for the method of comparison, whether a trace start signal is issued when there is a match or a trace start signal is issued when there is a mismatch, neither of these methods interferes with the gist of the present invention.

The IB force signal from the comparator can be handled by using an OR or AND condition with an external enable signal as the data acquisition start input, or by inserting a counter between it and the data acquisition control circuit to enable detailed tracing. It is within the scope of the present invention to use this signal as a control signal for detailed tracing.

Further, the signal can be outputted to the outside as a signal indicating that data is being taken in, and can be used for lamp display or as one piece of data for the execution status of a program.

Effects of the Invention As detailed above, according to the present invention, data is used to determine whether or not to trace by comparing the attributes of the program to be traced inputted from the outside with the attributes of the program being executed. The following effects can be obtained from the configuration of the collection device.

(1) When the system is running, depending on the specifications from an external device,
The execution status of the specified program can be traced, and as a result, there is no need for a human or computer to extract the necessary data from the traced data. The efficiency of data collection is also improved, and even if the data collection memory capacity is reduced, the functionality is improved.

(2) Use the counter and lamp as the output signal part from the comparator (
By adding:, fine-grained trace control is possible, such as displaying the operating status of a specified program and investigating the execution status of the program after it has been executed a specified number of times.

(6) Various conditions can be used for specifying the program, making it possible to set trace conditions corresponding to various requests.

[Brief explanation of drawings]

Figure 1 is a diagram of a conventional data collection method, and Figure 2 α and b are data collection methods in the conventional technology (two data collection examples,
A diagram showing the flow of program execution and the contents of the data collection memory. Figure 61 is an example of extracting necessary data from the collected data in Example C2-1 of Figure 2. FIG. 4 is a diagram showing data related to the program P1, and is a data collection system diagram of the present invention. 1... Arithmetic processing unit, 2... Main storage device, 6...
I10 control device, 4... common path, 5... data collection device, 6... data collection control circuit, 7... data collection memory, 8... printer, 9... display, 10. ...Program level register, 11...j
t Calibrator, 12... Trace level designation register, 13... Data collection indicator lamp, 14... Input device, 15... OR gate, A... Program level signal, B... Level Match signal, C...Trace valid (r+ number, D...Address and data signal, E...
...Level judgment invalid signal patent applicant Fuji Electric Manufacturing Co., Ltd. (one other person) agent
Patent attorney Gobe Tamadoki (3 others) Figure 1 Circle Figure 2 xl-y-x2 Figure 3

Claims (1)

[Claims] Calculation 1 In a computer system that collects common bus data and outputs the collected data to an external device to know the program flow and execution results, there is a condition setting register that stores external setting conditions, and a condition setting register that stores the setting conditions currently being executed. An execution program condition register that stores qualifications of the program, and a comparator that compares the contents of the condition setting register with the contents of the execution program condition register, and a match signal from the comparison result by the comparator is used for trace control. This data collection method is characterized by continuously tracing only the program information that follows the external setting conditions (2) regardless of any intermediate interruptions or branches.