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Method, device and system for storing abnormal memory data of systems and terminal equipment

A memory data and abnormal technology, applied in the field of communication, can solve problems such as poor implementation of analysis methods and low efficiency of problem solving

Active Publication Date: 2017-12-12
HISENSE VISUAL TECH CO LTD
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  • Abstract
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  • 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 and system for storing abnormal memory data of systems and terminal equipment
  • Method, device and system for storing abnormal memory data of systems and terminal equipment

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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

The invention discloses a method, device and system for storing abnormal memory data of systems and terminal equipment. The method comprises the following steps of: detecting whether a counting value of a watchdog timer exceeds a preset value or not; if the counting value exceeds the preset value, controlling, by utilizing a micro processing unit MCU in a system CPU, a double data rate synchronous dynamic random access memory DDR to store memory data in the DDR by adoption of a self-refreshing manner; when the DDR completes internal data storage, controlling an application processor in the system CPU to enter a system program operation state; and after the application processor enters the system program operation state, storing memory data in the DDR into a preset storage medium. According to the method, the storage of internal data can be realized through internal program operation in the system when the system is abnormal, an instruction sent to the system by external equipment is not needed, and problems can be found according to the internal data when the system is abnormal, so that the implementation is relatively strong and the problem solution efficiency is improved.

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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IPC IPC(8): G06F11/07
CPCG06F11/0715G06F11/0724G06F11/0757G06F11/0787
Inventor 初德进
Owner HISENSE VISUAL TECH CO LTD
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