A processing method and device in case of program abnormality

Abstract

The embodiment of the present application discloses a processing method in the case of a program abnormality, which is applied to a processing system. The processing system includes a parent process monitoring module and a PCI-e device. The parent process monitoring module judges according to the exit signal sent by the operating system kernel. Whether the child process exits abnormally; in the case of determining that the child process exits abnormally, the parent process monitoring module cancels the PCI-e device according to the device number of the PCI-e device associated with the PCI-e device transmission data program and the memory address registered therein The memory address registered in the PCI‑e device associated with the transfer data program. As a result, memory read and write errors caused by the PCI-e device data transfer program using invalid memory addresses for read and write operations are avoided, and the impact on the operating system and other programs is prevented, thereby reducing the harm caused by abnormal program conditions.

Description

technical field [0001] The present application relates to the technical field of software system driver program design, in particular to a processing method and device in case of abnormal program. Background technique [0002] Currently, a computer can use a PCI-e (English: peripheral component interconnect express) device to exchange data with other devices. Specifically, an application program installed in a user space (English: user space) in a computer installed with a Linux operating system can perform data interaction with other devices when running. [0003] With the development of science and technology, new PCI-e devices can support direct access to memory in user space. Specifically, when the application program installed in the user space, such as the target application program, is running, it will pre-allocate read and write memory to store data generated during the running process of the target application program. Then register the pre-allocated read-write me...

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Problems solved by technology

[0004] However, when the target application program with strong coupling with the PCI-e hardware device exits abnormally, the target application program usually cannot cancel the memory address registered on the PCI-e device in time, which may cause the current When other devices read and write data through the target application program, the PCI-e device will still read and write data to the original memory address, but this part of the memory may no longer be available or allocated to other programs by the operating system. Part of the memory to read and write data will cause serious memory read and write errors, or have a serious impact on other programs

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