US 7,353,426 B2 · Switcher for debugging and debugging method

Abstract

Communication between an application program running on an information processing apparatus and a peripheral device and the communication between the information processing apparatus and a debugging device, used for debugging, is effected using a sole interface provided on the information processing apparatus. A switcher for debugging, including terminals 17a to 17c, connected to a cable 7, terminals 18a to 18c, connected to a cable 8, a terminal 16a, connected to a cable 6, a controller 41 connected to terminals 17a, 17b for command and to terminals 18a, 18b for command, and a switch unit 43 connected to the terminal for test 17c, terminal for test 18c and to the terminal 16a, is used. Based on input information 51, from one of the terminals for command 17a and 18b, the controller 41 outputs output information 52 to the other of the terminals for command 17a and 18b, while also outputting control information 57. Based on the control information, switch unit 43 connects one of the terminal for test 17c and the terminal 16a to the terminal for test 18c.

Claims11

Dependent claims

A switcher for debugging used for testing an information processing apparatus, said switcher comprising:

a plurality of first terminals connectable to a plurality of first conductors, belonging to a first cable;
a plurality of second terminals connectable to a plurality of second conductors, belonging to a second cable;
a third terminal connectable to a third cable;
a controller connected to at least one first terminal for command, as at least one of said plural first terminals, and to at least one second terminal for command, as at least one of said plural second terminals, and
a switch unit connected to a first terminal for test, as at least one other of said plural first terminals, to a second terminal for test, as at least one other of said plural second terminals, and to said third terminal;
said controller outputting an output information, based on an input information from one of said first terminal for command and said second terminal for command, to control switching connection of said switch unit;
said switch unit connecting one of said first terminal for test and said third terminal to said second terminal for test based on said control information.

4 more elements

A debugging method for a debugging device debugging an information processing apparatus connected to a peripheral device, wherein

said peripheral device and the debugging device are connected to said information processing apparatus via a switch unit;
said information processing apparatus comprises an application program being debugged and a monitor program for controlling the debugging in the information processing apparatus;
said debugging device comprises a debugger for controlling the debugging;
and
said switch unit comprises a controller for selecting one of a first connection between the information processing apparatus and the peripheral device and a second connection between the information processing apparatus and the debugging device;
said debugging method comprising:
(a) a step of the debugger in a debug mode transmitting a first request signal, indicating a switching connection request to the switch unit based on a start request signal indicating a request for start of operation of an application program;
(b) a step of the controller switching-over from a second connection to a first connection based on a first request signal;
(c) a step of the controller transmitting a second request signal, indicating a request for execution of the application program, to the information processing apparatus;
(d) a step of a monitor program starting execution of the application program based on a second request signal;
(e) a step of the monitor program transmitting a first response signal, indicating start of execution of the application program, to the switch unit;
(f) a step of the controller transmitting a second response signal, indicating switching-over, to the debugging device, based on the first response signal;
and
(g) a step of the debugger transferring to the program executing mode based on the second response signal;
said debug mode being a mode of the debugger debugging the information processing apparatus;
and
said program executing mode being a mode of the application program being in operation.

14 more elements

A debugging method for debugging an information processing apparatus connected to a peripheral device, by a debugging device, wherein

said peripheral device and the debugging device are connected via a switch unit to said information processing apparatus;
said information processing apparatus comprises an application program being debugged and a monitor program for controlling debugging in the information processing apparatus;
said debugging device comprises a debugger for controlling the debugging;
said switch unit includes a controller for selecting one of a first connection between the information processing apparatus and a peripheral device and a second connection between the information processing apparatus and a debugging device;
the debugging method comprising:
(a) a step of said debugger in a program executing mode transmitting a first request signal, indicating a switching connection request to said switch unit, based on a stop request signal indicating a request for stop of the application program;
(b) a step of said controller transmitting a second request signal representing a stop request for stopping execution of the application program, based on a first request signal;
(c) a step of said monitor program stopping execution of the application program, based on a second request signal;
(d) a step of the monitor program transmitting a first response signal, indicating stop of execution of the application program, to the switch unit;
(e) a step of the controller switching from a first connection to a second connection based on the first response signal;
(f) a step of the controller transmitting a second response signal, indicating switching-over, to the debugging device;
and
(g) a step of the debugger transferring to a debug mode based on the second response signal;
said debug mode being a mode of the debugger debugging the information processing apparatus;
and
said program executing mode being a mode of the application program being in operation.

13 more elements

Dependencies are inferred from the claim text.

Switcher for debugging and debugging method

Life of this patent

Switcher for debugging and debugging method

Life of this patent

Abstract

Claims11