hiviewdfx_hidumper_lite
- Introduction
- [Directory Structure](#Directory Structure)
- [Use of hidumper_lite](#Use of hidumper_lite)
- [System Interface](#System Interface)
- [Rewrite interface](#Rewrite interface)
- [Related warehouses](#Related warehouses)
Introduction
The hidumper_lite provides dump interfaces in the LiteOS_M system to help developers export fault logs, memory, and CPU information.
Directory Structure
The source of Hiview code directory structure is as follows::
/base/hiviewdfx/hidumper_lite.
├── lite
└── hidumper.c #AT命令处理过程
└── mini
├── hidumper_adapter.c #hidumper功能函数适配层
├── hidumper_core.c #hidumper核心层
└── interfaces #公共接口文件
Use of hidumper_lite
The hidumper_lite command is used to query data in the liteOS_M
Parameter:
| Format | Meaning |
|---|---|
| AT+HIDUMPER= | Displays the CPU, memory, and all task usage information |
| AT+HIDUMPER=-dc | Displays CPU usage information |
| AT+HIDUMPER=-dm | Displays memory usage information |
| AT+HIDUMPER=-df | Print the last fault log information |
| AT+HIDUMPER=-dt | Print all task information |
| AT+HIDUMPER=-h | Print the help information |
| AT+HIDUMPER=-ikc | Injecting faults into the kernel |
| AT+HIDUMPER=-m | Prints all memory data in hexadecimal format |
| AT+HIDUMPER=-m,memstart,memsize | Prints the data of a specific memory area in hexadecimal format. Two parameters, |
| memstart: Memory start address. memsize: memory size |
System Interface
at_hidumper
int at_hidumper(unsigned int argc, const char **argv)
AT instruction processing function injected into the system
- Parameter:
Member Type Required Description argc unsigned int Y number of Parameter argv const char** Y content of Parameter
Rewrite interface
For details about the example, see the rewriting of the hi3861 chip. The corresponding position is as follows device/soc/hisilicon/hi3861v100/sdk_liteos/components/at/src/hidumper_adapter_impl.c
The following functions are : that need to be rewritten on different chips.
DumpSysInfo
int DumpSysInfo(void);
Rewrites the function of printing system information. This function prints the system information of the current device.
DumpCpuUsage
int DumpCpuUsage(void);
Rewrites the function for printing CPU usage information. This function prints the CPU usage of the current device.
DumpMemUsage
int DumpMemUsage(void);
Rewrites the function for printing memory usage information. This function prints the memory usage of the current device.
DumpTaskInfo
int DumpTaskInfo(void);
Rewrite the function of printing all task information of the system. This function prints all task information in the system.
DumpFaultLog
int DumpFaultLog(void);
Rewrite the function for printing exception logs. This function prints the last saved log information.
DumpMemRegion
int DumpMemRegion(unsigned long long addr, unsigned long long size)
Overwrites the function of printing memory data in a specified area. This function prints the data of the memory area of the total size starting from addr.
- Parameter:
Parameter name Type Mandatory Description addr unsigned long long Y Start address of the memory to be queried size unsigned long long Y Internal size to be queried
DumpAllMem
int DumpAllMem(void);
Overwrites the function of printing all memory data. This function can print all memory data.
PlatformHiDumperIinit
int PlatformHiDumperIinit(void);
Rewrites the platform hidumper initialization function. This function initializes features such as the at command of HiDumper based on different platforms.
Related warehouses
hiviewdfx_hidumper_lite