鸿蒙OpenHarmony开发中的知识： DFX工具—HiDumper

简介

HiDumper是OpenHarmony中为开发、测试人员，IDE工具提供统一的系统信息获取工具，帮助使用者分析，定位问题。

HiDumper主要包括以下几个主要模块：

• hidumper：可执行程序，工具入口，在板上可通过hidumper执行对应命令
• hidumperclient：动态库，提供framework层接口
• lib_dump_usage：动态库，提供framework层功能实现
• hidumperservice：动态库，sa服务，提供service层功能实现

---

结构分析

.
├── BUILD.gn
├── bundle.json
├── client
│   └── native
│       ├── dump_client_main.cpp	
│       └── main.cpp				//可执行文件入口
├── figures
├── frameworks						//框架实现
│   └── native
│       ├── BUILD.gn
│       ├── common.h
│       ├── dump_controller.h
│       ├── dump_utils.cpp
│       ├── dump_utils.h
│       ├── include
│       └── src
├── hidumper.gni
├── interfaces
│   ├── innerkits
│   │   ├── BUILD.gn
│   │   ├── dump_usage.cpp
│   │   └── include
│   └── native
│       └── innerkits
├── LICENSE
├── OAT.xml
├── README.md
├── README_zh.md
├── sa_profile
├── services						//服务实现
│   ├── BUILD.gn
│   ├── hidumper.map
│   ├── native
│   │   ├── etc
│   │   ├── include
│   │   └── src
│   └── zidl
│       ├── include
│       └── src
├── test
└── utils

• usage

        "usage:\n"
        "  -h                          |help text for the tool\n"
        "  -lc                         |a list of system information clusters\n"
        "  -ls                         |a list of system abilities\n"
        "  -c                          |all system information clusters\n"
        "  -c [base system]            |system information clusters labeled \"base\" and \"system\"\n"
        "  -s                          |all system abilities\n"
        "  -s [SA0 SA1]                |system abilities labeled \"SA0\" and \"SA1\"\n"
        "  -s [SA] -a ['-h']           |system ability labeled \"SA\" with arguments \"-h\" specified\n"
        "  -e                          |faultlogs of crash history\n"
        "  --net                       |dump network information\n"
        "  --storage                   |dump storage information\n"
        "  -p                          |processes information, include list and infromation of processes"
        " and threads\n"
        "  -p [pid]                    |dump threads under pid, includes smap, block channel,"
        " execute time, mountinfo\n"
        "  --cpuusage [pid]            |dump cpu usage by processes and category; if PID is specified,"
        " dump category usage of specified pid\n"
        "  --cpufreq                   |dump real CPU frequency of each core\n"
        "  --mem [pid]                 |dump memory usage of total; dump memory usage of specified"
        " pid if pid was specified\n"
        "  --zip                       |compress output to /data/log/hidumper\n";

如上，我们可以看出hidumper能查看几乎OpenHarmony里内的所有信息，比如：

• 查看系统ability信息，其中也包括HiDumperService

# hidumper -ls
System ability list:
RenderService                    AbilityManagerService            DataObserverMgr
UriPermissionMgr                 AccountMgr                       BundleMgr
FormMgr                          ApplicationManagerService        Installd
AccessibilityManagerService      UserIdmService