Method, device, system and terminal equipment for saving system abnormal memory data

A memory data and exception technology, applied in the field of communication, can solve the problems of poor implementation of analysis methods and low efficiency of solving problems.

Active Publication Date: 2021-02-26
HISENSE VISUAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a storage method, device, system and terminal equipment for system abnormal memory data to solve the problems of poor implementability of analysis methods and low efficiency of solving problems when abnormal problems occur in the current system

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  • Method, device, system and terminal equipment for saving system abnormal memory data
  • Method, device, system and terminal equipment for saving system abnormal memory data

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Embodiment Construction

[0030] In the development stage of smart TV projects, embedded systems (Linux or android) will encounter various problems such as system crashes and restarts, such as kernel panic (kernel errors), memory leaks, memory out-of-bounds, stampede and other abnormalities. When the system no longer responds to the human-computer interaction similar to the command line to understand the current state of the system, that is, the system is out of control and does not respond to any external control commands.

[0031] At present, in order to solve the system abnormality, it is necessary to connect the arm simulation tool Trace, re-run the abnormal system, and reproduce the problem through the simulation tool Trace to find out which process or task has a memory access error, but only under certain conditions to run the abnormal process or System exceptions will only occur during tasks, resulting in a low probability of problem recurrence, and most of the embedded systems are multi-core sys...

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Abstract

This application discloses a storage method, device, system and terminal equipment for system abnormal memory data, wherein the method includes: detecting whether the count value of the watchdog timer exceeds a preset value; if it exceeds the preset value, using the system The microprocessor MCU in the CPU controls the double-rate synchronous dynamic random access memory DDR to save the memory data in the DDR by self-refresh; when the DDR finishes saving its internal data, the application processor in the control system CPU enters the system program running state ; After the application processor enters the system program to run, store the memory data in the DDR to the preset storage medium. The technical solution of this application only needs to run the internal program of the system to save the internal data when the system is abnormal, and does not need to use the instructions sent to the system by external equipment. It can find out where the problem occurs according to the internal data when the system is abnormal. It has strong implementability and improves problem-solving efficiency.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a storage method, device, system and terminal equipment for system abnormal memory data. Background technique [0002] In recent years, smart TV has become a must-have household appliance for almost every family, and its functions are also increasing. In the project development stage of smart TV, the system CPU will encounter various abnormal problems, such as kernel panic (kernel error), memory error, memory out of bounds, memory stampede and other problems in the software running on the ARM core of the application processing unit. , the system shows crashes and restarts, causing the system to fail to respond to any external control commands. [0003] At present, when analyzing problems such as system crashes and restarts, the main log information available includes: serial port logs, logcat logs (android logs), dmesg (linux kernel logs), anr (android exception trace log...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/07
CPCG06F11/0715G06F11/0724G06F11/0757G06F11/0787
Inventor 初德进
Owner HISENSE VISUAL TECH CO LTD
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