Debugging method, multi-core processor, and debugging device

A debugging method, executed by a debugging apparatus deployed in a host machine, wherein the host machine is located in a remote debugging system, the debugging apparatus comprises a debugger and a debugging agent, the method comprises:

• determining, by the debugging agent after determining that a core A stops running in a polling manner, a reason that the core A stops running, wherein the core A belongs to a multi-core processor of a target machine in the remote debugging system;
• if the reason that the core A stops running is a preset event, reporting, by the debugging agent, a second message to the debugger, wherein the second message comprises an identifier indicating that the core A stops running and an identifier of the preset event;
• and after receiving the second message, obtaining, by the debugger, debugging information of the preset event according to the identifier of the preset event, and setting a preset pending breakpoint as an operation object of the preset event according to the debugging information of the preset event wherein the preset event is a kernel mode code processing function or a user mode code processing function, and the operation object of the preset event is kernel mode code or user mode code;
• and
• instructing, by the debugger, the debugging agent to send a second stop termination instruction to the core A, wherein the second stop termination instruction is used to instruct the core A to resume running, so that the core A knocks the pending breakpoint in a process of running the operation object of the preset event, and the core A enters a debugging state.

A multi-core processor, in a remote debugging system, comprising:

• a core A,
• other cores that are located in the multi-core processor and that belong to a same logical group as the core A,
• an input port, and
• wherein:
• the core A is configured to:
• execute a first debugging exception instruction located in a header of a debugging interface function and stop running after completing execution of a processing routine of a preset event, and send a running stop signal to the other cores in a process of executing the first debugging exception instruction, wherein the running stop signal is used to instruct the other cores to stop running, and the preset event is a kernel mode code processing function or a user mode code processing function;
• the input port is configured to:
• receive a first stop termination instruction, and forward the first stop termination instruction to the core A, wherein the first stop termination instruction is sent by a debugging apparatus in the remote debugging system after the debugging apparatus determines that the core A stops running and that a reason that the core A stops running is a reason other than the preset event;
• the core A is further configured to:
• after receiving the first stop termination instruction and resuming running, execute a debugging information collection function to collect debugging information of the preset event, and stop running after completing the execution of the debugging information collection function, wherein the debugging information collection function comprises the debugging interface function, a first debugging exception instruction is set in the header of the debugging interface function, and the first debugging exception instruction is used to instruct the core A to stop running;
• the input port is further configured to:
• receive a second stop termination instruction, and forward the second stop termination instruction to the core A, wherein the second stop termination instruction is sent by the debugging apparatus after the debugging apparatus sets a preset pending breakpoint as an operation object of the preset event according to the debugging information of the preset event;
• and
• the core A is further configured to:
• send a running resumption instruction to the other cores after receiving the second stop termination instruction and resuming running, wherein the running resumption instruction is used to instruct the other cores to resume running;
• and knock the pending breakpoint in a process of running the operation object of the preset event, so as to enter a debugging state.

A debugging apparatus, wherein the debugging apparatus is deployed on a host machine in a remote debugging system, and the debugging apparatus comprises a debugging unit and a receiving unit, the debugging unit comprises a debugger and a debugging agent, wherein

• the receiving unit is configured to:
• receive a message used for instructing a core A to stop running, and forward the message used for instructing the core A to stop running to the debugging unit, wherein a target machine located in the remote debugging system comprises a multi-core processor, and the multi-core processor comprises the core A;
• the debugging agent is specifically configured to:
• after determining that the core A stops running, determine a reason that the core A stops running, and if the reason that the core A stops running is a preset event, report a second message to the debugger, wherein the second message comprises an identifier indicating that the core A stops running and an identifier of the preset event, wherein the preset event is a kernel mode code processing function or a user mode code processing function, and an operation object of the preset event is kernel mode code or user mode code;
• the debugger is specifically configured to:
• after receiving the second message, obtain debugging information of the preset event according to the identifier of the preset event, and set a preset pending breakpoint as the operation object of the preset event according to the debugging information of the preset event;
• and
• the debugger is specifically configured to instruct the debugging agent to send a second stop termination instruction to the core A, wherein the second stop termination instruction is used to instruct the core A to resume running, so that the core A knocks the pending breakpoint in a process of running the operation object of the preset event, and the core A enters a debugging state.

A debugging device, including a processor and a memory, wherein

• the processor is configured to:
• after determining that a core A stops running, determine a reason that the core A stops running in a polling manner, where a target machine located in a remote debugging system includes a multi-core processor, and the multi-core processor includes the core A;
• if the reason that the core A stops running is a preset event, the processor is further configured to:
• report a second message to a debugger, wherein the second message comprises an identifier indicating that the core A stops running and an identifier of the preset event and after receiving the second message, obtain the debugging information of the preset event according to the identifier of the preset event, and setting a preset pending breakpoint as an operation object of the preset event according to the debugging information of the preset event, where the preset event is a kernel mode code processing function or a user mode code processing function, and the operation object of the preset event is kernel mode code or user mode code;
• the memory is configured to store the debugging information of the preset event;
• and
• the processor is further configured to send a second stop termination instruction to the core A, wherein the second stop termination instruction is used to instruct the core A to resume running, so that the core A knocks the pending breakpoint in a process of running the operation object of the preset event, and the core A enters a debugging state.

A debugging method, executed by a debugging apparatus deployed in a host machine, wherein the host machine is located in a remote debugging system, the debugging apparatus comprises a debugger and a debugging agent, the method comprises:

• determining, by the debugging agent after determining that a core A stops running in a polling manner, a reason that the core A stops running, wherein the core A belongs to a multi-core processor of a target machine in the remote debugging system;
• if the reason that the core A stops running is a reason other than a preset event, reporting a first message to the debugger, wherein the first message comprises an identifier indicating that the core A stops running and a default identifier, wherein the preset event is a kernel mode code processing function or a user mode code processing function, and an operation object of the preset event is kernel mode code or user mode code;
• and
• after receiving the first message, instructing, by the debugger, the debugging agent to send a first stop termination instruction to the core A, wherein the first stop termination instruction is used to instruct the core A to resume running, and to collect debugging information of the preset event.

A debugging apparatus, wherein the debugging apparatus is deployed on a host machine in a remote debugging system, and the debugging apparatus comprises a debugging unit and a receiving unit, the debugging unit comprises a debugger and a debugging agent, wherein

• the receiving unit is configured to:
• receive a message used for instructing a core A to stop running, and forward the message used for instructing the core A to stop running to the debugging unit, wherein a target machine located in the remote debugging system comprises a multi-core processor, and the multi-core processor comprises the core A;
• the debugging agent is specifically configured to:
• after determining that the core A stops running, determine the reason that the core A stops running, and if the reason that the core A stops running is a reason other than a preset event, report a first message to the debugger, wherein the first message comprises an identifier indicating that the core A stops running and a default identifier, wherein the preset event is a kernel mode code processing function or a user mode code processing function, and an operation object of the preset event is kernel mode code or user mode code;
• and
• the debugger is specifically configured to:
• after receiving the first message, instruct the debugging agent to send a first stop termination instruction to the core A, wherein the first stop termination instruction is used to instruct the core A to resume running, and to collect debugging information of the preset event.