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OpenHarmony—hilog命令行使用手册-51CTO.COM

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为了让刚入门的鸿蒙开发者迅速掌握hilog工具的使用方法,特编写了该篇命令行使用手册供开发者查阅,让开发者在自己的的开发和调试的过程中充分认识hilog工具的优势和便捷。

一、查询日志

1、指定模块查询

-t 用于指定输出日志的类型/模块,目前系统共包含app/core/kmsg/init四种日志类型。

hilog -t app|core|kmsg|init 阻塞式实时查询模块日志,-t可以与其他参数一起使用。

hilog -t app|core|kmsg|init -x 非阻塞式实时查询模块日志,-x选项也可以和hilog的其他选项同时使用。

示例如下:

# hilog -t kmsg
01-01 00:00:03.909     0     0 I fffff/kmsg: Booting Linux on physical CPU 0x0
01-01 00:00:03.909     0     0 W fffff/kmsg: Linux version 5.10.79 ([email protected]) (OHOS () clang version 10.0.1.480513  (llvm-project b2cadc87d64786377748bdb6bc5e6949492f01ab), GNU ld (Linaro_Binutils-2019.12) 2.28.2.20170706) #1 SMP Wed Apr 6 09:37:37 CST 2022
01-01 00:00:03.909     0     0 I fffff/[410fc075]: CPU: ARMv7 Processor  revision 5 (ARMv7), cr=10c5387d
01-01 00:00:03.909     0     0 I fffff/kmsg: CPU: div instructions available: patching division code
01-01 00:00:03.909     0     0 I fffff/kmsg: CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
01-01 00:00:03.909     0     0 I fffff/kmsg: OF: fdt: Machine model: Hisilicon HI3516DV300 DEMO Board
01-01 00:00:03.909     0     0 I fffff/kmsg: Memory policy: Data cache writealloc
01-01 00:00:03.909     0     0 D fffff/kmsg: cma: dma_contiguous_reserve(limit ffffffff)
01-01 00:00:03.909     0     0 D fffff/kmsg: cma: dma_contiguous_reserve: reserving 64 MiB for global area

2、指定tag查询

-T选项为指定tag。标签:用于指定日志标识,可以为任意字符串,建议标识调用所在的类或者业务行为。

hilog -t app|core|kmsg|init -T <tag> 模块内指定tag, -T可以与其他参数一起使用。

hilog -T <tag> 只指定tag。

示例如下:

# hilog -t core -T BatteryThread
01-02 02:10:03.771   725   820 I 02500/BatteryThread: UpdateBatteryInfo: BatteryInfo capacity=11, voltage=4123456, temperature=222, healthState=1, pluggedType=2, pluggedMaxCurrent=-1, pluggedMaxVoltage=-1, chargeState=3, chargeCounter=4000000, present=0, technology=Li-ion
01-02 02:10:03.771   725   820 I 02500/BatteryThread: UpdateBatteryInfo g_callback is nullptr
01-02 02:10:03.771   725   820 I 02500/BatteryThread: LoopingThreadEntry: timeout=-1, nevents=1
01-02 02:10:13.772   725   820 I 02500/BatteryThread: UpdateBatteryInfo: BatteryInfo capacity=11, voltage=4123456, temperature=222, healthState=1, pluggedType=2, pluggedMaxCurrent=-1, pluggedMaxVoltage=-1, chargeState=3, chargeCounter=4000000, present=0, technology=Li-ion
01-02 02:10:13.772   725   820 I 02500/BatteryThread: UpdateBatteryInfo g_callback is nullptr
01-02 02:10:13.772   725   820 I 02500/BatteryThread: LoopingThreadEntry: timeout=-1, nevents=1
01-02 02:10:23.772   725   820 I 02500/BatteryThread: UpdateBatteryInfo: BatteryInfo capacity=11, voltage=4123456,
# hilog -T BatteryThread
01-02 02:14:03.771   725   820 I 02500/BatteryThread: UpdateBatteryInfo: BatteryInfo capacity=11, voltage=4123456, temperature=222, healthState=1, pluggedType=2, pluggedMaxCurrent=-1, pluggedMaxVoltage=-1, chargeState=3, chargeCounter=4000000, present=0, technology=Li-ion
01-02 02:14:03.771   725   820 I 02500/BatteryThread: UpdateBatteryInfo g_callback is nullptr
01-02 02:14:03.771   725   820 I 02500/BatteryThread: LoopingThreadEntry: timeout=-1, nevents=1
01-02 02:14:13.772   725   820 I 02500/BatteryThread: UpdateBatteryInfo: BatteryInfo capacity=11, voltage=4123456, temperature=222, healthState=1, pluggedType=2, pluggedMaxCurrent=-1, pluggedMaxVoltage=-1, chargeState=3, chargeCounter=4000000, present=0, technology=Li-ion

3、指定level查询

-L 指定日志级别,HiLog中定义了DEBUG、INFO、WARN、ERROR、FATAL五种日志级别。

hilog -t app|core|kmsg|init -L D|I|W|E|F 模块内指定level查询,D:debug, I:info, W:warning, E:error, F:fatal。

hilog -L D|I|W|E|F 只指定level查询,可以与其他参数一起使用。

示例如下:

# hilog -t app -L I
01-01 08:15:00.030   875   875 I 02200/JsApp: SystemUI_Default tag: TimeManager --> notifyTimeChange
01-01 08:15:00.031   875   875 I 02200/JsApp: SystemUI_Default tag: EventManager --> publish localEvent type: Time_Change_Event
01-01 08:16:00.031   875   875 I 02200/JsApp: SystemUI_Default tag: CommonEvent_TimeManager --> handle common event: usual.event.TIME_TICK
01-01 08:16:00.031   875   875 I 02200/JsApp: SystemUI_Default tag: TimeManager --> notifyTimeChange
01-01 08:16:00.032   875   875 I 02200/JsApp: SystemUI_Default tag: EventManager --> publish localEvent type: Time_Change_Event
01-01 08:17:00.030   875   875 I 02200/JsApp: SystemUI_Default tag: CommonEvent_TimeManager --> handle common event: usual.event.TIME_TICK
# hilog -L I
01-01 08:15:00.030   875   875 I 02200/JsApp: SystemUI_Default tag: TimeManager --> notifyTimeChange
01-01 08:15:00.031   875   875 I 02200/JsApp: SystemUI_Default tag: EventManager --> publish localEvent type: Time_Change_Event
01-01 08:16:00.031   875   875 I 02200/JsApp: SystemUI_Default tag: CommonEvent_TimeManager --> handle common event: usual.event.TIME_TICK
01-01 08:16:00.031   875   875 I 02200/JsApp: SystemUI_Default tag: TimeManager --> notifyTimeChange
01-01 08:16:00.032   875   875 I 02200/JsApp: SystemUI_Default tag: EventManager --> publish localEvent type: Time_Change_Event
01-01 08:17:00.030   875   875 I 02200/JsApp: SystemUI_Default tag: CommonEvent_TimeManager --> handle common event: usual.event.TIME_TICK

4、指定domain查询

-D选项为指定domain。服务域:日志的服务域,用于指定输出日志所对应的业务领域。这是一个十六进制整数,范围从 0x0 到 0xFFFFF。建议使用0xAAABB格式,其中AAA表示子系统,BB表示模块。

hilog -t app|core|kmsg|init -D <domian> 模块内指定domian查询。

hilog -D <domain> 只指定domian查询,可以与其他参数一起使用。

# hilog -D 0x0 -t core                                                          

01-01 04:36:03.140    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                       
01-01 04:36:05.299    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:36:07.459    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:36:09.619    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:36:11.780    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:36:13.939    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:36:16.099    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:36:18.259    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:36:20.419    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11
# hilog -D 0x0                                                                  
01-01 04:37:01.459    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:37:03.619    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:37:05.779    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:37:07.939    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:37:10.100    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:37:12.260    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:37:14.419    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11                                                          
01-01 04:37:16.579    91   145 I 00000/AppSpawnServer: AppSpawnServer::ConnectionPeer connectFd is -11

5、排除查询

type、level、domain、tag支持排除查询,排除查询可以使用以"^“开头的参数和分隔符”,"来完成。

hilog [-t ^app|kmsg|init|core] [-T ^<tag>] [-L ^D|I|W|E|F] [-D ^<domain>]。

示例如下:

# hilog -t ^app,kmsg,init -T ^BatteryThread
01-02 02:07:00.071   332   332 E 01400/OHOS::ROSEN: RsDebug RSHardwareProcessor::ProcessSurface surfaceNode id:3758096384048 name:[SystemUi_NavigationBar] dst [0 912 480 48]SrcRect [480 48] rawbuffer [480 48] surfaceBuffer [480 48] buffaddr:0x1249230, z:2.000000, globalZOrder:2, blendType = 3
01-02 02:07:00.071   332   332 D 01400/OHOS::ROSEN: RsDebug RSHardwareProcessor::CropLayers this layer no need to crop
01-02 02:07:00.071   332   332 D 01400/OHOS::ROSEN: RsDebug RSHardwareProcessor::CropLayers this layer no need to crop
01-02 02:07:00.071   332   332 D 01400/OHOS::ROSEN: RsDebug RSHardwareProcessor::CropLayers this layer no need to crop
01-02 02:07:00.071   332   332 D 01400/Composer: Repaint: Repaint: start
01-02 02:07:00.071   332   332 D 01400/DISP: [[email protected]_session.cpp:273]
01-02 02:07:00.071   332   332 D 01400/DISP: [[email protected]_session.h:48] device Id : 0
01-02 02:07:00.071   332   332 D 01400/DISP: [[email protected]_display.cpp:221] id : 3

二、查询和设置信息

1、查询和设置模块的buffer

(1)查询模块的buffer

显示的日志内容为各模块buffer里当前缓存的内容,并实时更新,超出buffer的内容会覆盖掉旧的内容。

hilog -g -t app|core|kmsg|init 查询日志类型为app/core/kmsg/init的buffer大小:

示例如下:

# hilog -g -t core
core buffer size is 256K
#

(2)设置模块的buffer

hilog -G <size> -t app|core|kmsg|init 设置指定<type>日志类型缓冲区的大小,配合-t指定某一类型使用,默认app和core, 可使用B/K/M/G为单位。

示例如下:

# hilog -t app -g
app buffer size is 256K
# hilog -t app -G 2M
app buffer size is 2M
# hilog -t app -g
app buffer size is 2M
#

(3)清除buffer日志

hilog -t app|core|kmsg|init -r -r选项清除buffer日志,配合-t指定某一类型使用,默认app和core。

# hilog -t app -r
app log clear success
# hilog -t app
#

2、查询和清除统计信息

(1)查询统计信息

hilog -t app|core|kmsg|init -s -s查询统计信息,需配合-t或-D使用。

示例如下:

# hilog -t app -s
app print log length is 1M
app cache log length is 461K
app dropped log lines is 0B
#

(2)清除统计信息

hilog -t app|core|kmsg|init -S -S清除统计信息,需配合-t或-D使用。

# hilog -t app -s
app print log length is 1M
app cache log length is 461K
app dropped log lines is 0B
#
#
# hilog -t app -S
app statistic info clear success
# hilog -t app -s
app print log length is 0B
app cache log length is 0B
app dropped log lines is 0B
#

三、日志落盘

1、使用方法

hilog -w start [-f "xxx"] [-l <length>] [-j <jobid>] [-m <algorithm>] [-n <number>] 启动落盘任务。

hilog -w query [-j <jobid>] 查询落盘任务。

hilog -w stop [-j <jobid>] 停止落盘任务。

示例如下:

# hilog -w query
#
#hilog -w start -f "hilog" -l 66k -j 222 -m zlib -n 2                          
Persist task [jobid:222] started successfully
#cd /data/log/hilog
#
# ls -al
total 100
drwxr-x--- 2 logd   log     4096 1970-01-02 03:34 .
drwxrwx--- 6 system log     4096 1970-01-01 00:38 ..
-rw-r----- 1 logd   system 65540 1970-01-02 03:34 .persisterInfo_222
-rw-r----- 1 logd   system   132 1970-01-02 03:34 .persisterInfo_222.info
-rw-r----- 1 logd   system 12239 1970-01-02 03:34 hilog.002.19700102-033431.gz
-rw-r----- 1 logd   system  6883 1970-01-02 03:34 hilog.003.19700102-033431.gz
# hilog -w query -j 222 #指定jobid查询
222 core,app zlib /data/log/hilog/hilog 67584 2
# hilog -w query    #查询全部落盘任务
222 core,app zlib /data/log/hilog/hilog 67584 2
# hilog -w stop -j 222
Persist task [jobid:222] stopped successfully
# ls -al
total 36
drwxr-x--- 2 logd   log     4096 1970-01-02 03:35 .
drwxrwx--- 6 system log     4096 1970-01-01 00:38 ..
-rw-r----- 1 logd   system 12239 1970-01-02 03:34 hilog.002.19700102-033431.gz
-rw-r----- 1 logd   system 13000 1970-01-02 03:35 hilog.003.19700102-033431.gz
#

2、案例展示

案例需求:抓取模块最早的log,即:开机启动过程中模块产生的log,并将内容保存到文件导出设备。

第一步:启动落盘任务。

示例如下:

#
# hilog -w start -f "hilog" -l 66k -j 111 -m zlib -n 2 -t kmsg
Persist task [jobid:111] started successfully
#
#cd /data/log/hilog
#
# ls -al 
total 116
drwxr-x--- 2 logd   log     4096 1970-01-02 19:31 .
drwxrwx--- 6 system log     4096 1970-01-01 00:38 ..
-rw-r----- 1 logd   system 65540 1970-01-02 19:31 .persisterInfo_111
-rw-r----- 1 logd   system   132 1970-01-02 19:31 .persisterInfo_111.info
-rw-r----- 1 logd   system 19245 1970-01-02 19:31 hilog.000.19700102-193128.gz
-rw-r----- 1 logd   system 16069 1970-01-02 19:31 hilog.001.19700102-193128.gz
#

第二步:重启设备

# reboot
D:\share>

第三步:设备起来后,停止落盘任务。

D:\share>hdc_std.exe shell
#
# cd /data/log/hilog/
#
# ls -al
total 108
drwxr-x--- 2 logd   log     4096 1970-01-02 19:32 .
drwxrwx--- 6 system log     4096 1970-01-01 00:38 ..
-rw-r----- 1 logd   system 65540 1970-01-02 19:32 .persisterInfo_111
-rw-r----- 1 logd   system   132 1970-01-02 19:32 .persisterInfo_111.info
-rw-r----- 1 logd   system 16192 1970-01-02 19:31 hilog.003.19700102-193147.gz #注意:log文件的命名是随时间实时更新的
-rw-r----- 1 logd   system  8500 1970-01-02 19:32 hilog.004.19700102-193213.gz
#
# hilog -w stop
Persist task [jobid:111] stopped successfully
# ls -al
total 36
drwxr-x--- 2 logd   log     4096 1970-01-02 19:34 .
drwxrwx--- 6 system log     4096 1970-01-01 00:38 ..
-rw-r----- 1 logd   system 16192 1970-01-02 19:31 hilog.003.19700102-193147.gz
-rw-r----- 1 logd   system  8500 1970-01-02 19:32 hilog.004.19700102-193213.gz
#
#

第四步:将log文件导出设备,即可得到模块的启动log文件。

#
# exit
D:\share>hdc_std.exe file recv /data/log/hilog/hilog.003.19700102-193147.gz D:\share
FileTransfer finish, Size:16192 time:55ms rate:294.40kB/s
D:\share>hdc_std.exe file recv /data/log/hilog/hilog.004.19700102-193213.gz D:\share
FileTransfer finish, Size:8500 time:25ms rate:340.00kB/s
D:\share>
D:\share>dir
......
2022/05/09  14:04         3,424,768 hdc_std.exe
2022/05/20  10:24            16,192 hilog.003.19700102-193147.gz
2022/05/20  10:25             8,500 hilog.004.19700102-193213.gz
......
D:\share>

四、其他辅助命令

-a <n> 只显示前<n>行日志。

-z <n> 只显示后<n>行日志。

示例如下:

# hilog -t app -a 5
01-02 03:12:00.030   875   875 I 02200/JsApp: SystemUI_Default tag: CommonEvent_TimeManager --> handle common event: usual.event.TIME_TICK
01-02 03:12:00.030   875   875 I 02200/JsApp: SystemUI_Default tag: TimeManager --> notifyTimeChange
01-02 03:12:00.030   875   875 I 02200/JsApp: SystemUI_Default tag: EventManager --> publish localEvent type: Time_Change_Event
01-02 03:13:00.031   875   875 I 02200/JsApp: SystemUI_Default tag: CommonEvent_TimeManager --> handle common event: usual.event.TIME_TICK
01-02 03:13:00.031   875   875 I 02200/JsApp: SystemUI_Default tag: TimeManager --> notifyTimeChange
#
# 
# hilog -t app -z 5
01-02 04:02:00.032   875   875 I 02200/JsApp: SystemUI_Default tag: EventManager --> publish localEvent type: Time_Change_Event
01-02 04:02:00.032   875   875 I 02200/JsApp: SystemUI_Default tag: TimeManager --> notifyTimeChange
01-02 04:02:00.031   875   875 I 02200/JsApp: SystemUI_Default tag: CommonEvent_TimeManager --> handle common event: usual.event.TIME_TICK
01-02 04:01:00.030   875   875 I 02200/JsApp: SystemUI_Default tag: EventManager --> publish localEvent type: Time_Change_Event
01-02 04:01:00.030   875   875 I 02200/JsApp: SystemUI_Default tag: TimeManager --> notifyTimeChange
#

这里只演示了常用的命令选项,如果需要其他选项请自行查阅附件表格,或通过hilog -h查询。

附:hilog命令行使用表格

–help

阻塞读日志,不退出

–exit

非阻塞读日志,读完退出

查询buffer的大小,配合-t指定某一类型使用,默认app和core

–buffer-size

<size>

设置指定<type>日志类型缓冲区的大小,配合-t指定某一类型使用,默认app和core, 可使用B/K/M/G为单位

清除buffer日志,配合-t指定某一类型使用,默认app和core

–privacy

<on/off>

支持系统调试时日志隐私开关控制

打开隐私开关,显示<private>

关闭隐私开关,显示明文

<on/off>

Kernel日志读取开关控制

打开读取kernel日志

关闭读取kernel日志

–statistics

查询统计信息,需配合-t或-D使用

清除统计信息,需配合-t或-D使用

<control-type>

流控缺省配额开关控制

pidon

进程流控开关打开

pidoff

进程流控开关关闭

domainon

domain流控开关打开

domainoff

domain流控开关关闭

–level

<level>

指定级别的日志,示例:-L D/I/W/E/F

–type

<type>

指定类型的日志,示例:-t app core init

–domain

<domain>

指定domain

<tag>

指定tag

–head

<n>

只显示前<n>行日志

–tail

<n>

只显示后<n>行日志

<pid>

标识不同的pid

–regex

<expr>

只打印日志消息与<expr>匹配的行,其中<expr>是一个正则表达式

–filename

<filename>

设置落盘的文件名

–length

<length>

设置落盘的文件大小,需要大于等于64K

–number

<number>

设置落盘文件的个数

–jobid

<jobid>

设置落盘任务的ID

–write

<control>

落盘任务控制

query

落盘任务查询

start

落盘任务开始,命令行参数为文件名、单文件大小、落盘算法、rotate文件数目.

落盘任务停止

–stream

<algorithm>

落盘方式控制

无压缩方式落盘

zlib压缩算法落盘,落盘文件为.gz

zstd压缩算法落盘,落盘文件为.zst

–format

<format>

显示本地时间

color

显示不同级别显示不同颜色,参数缺省级别颜色模式处理(按黑白方式)

epoch

显示相对1970时间

monotonic

显示相对启动时间

显示微秒精度时间

显示纳秒精度时间

显示将年份添加到显示的时间

显示将本地时区添加到显示的时间

–baselevel

<loglevel>

设置可打印日志的最低等级:D(DEBUG)/I(INFO)/W(WARN)/E(ERROR)/F(FATAL)

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