Android Log Tag meaning, androidlogtag meaning
One of the most important methods to analyze Android problems is to analyze logs in events. there are many system logs in the log, some of which are not very familiar with the meaning. The following is the system log tag obtained from the android source code.
The Tag description is as follows: "30005 am_create_activity (User | 1 | 5), (Token | 1 | 5), (Task ID | 1 | 5 ), (Component Name | 3), (Action | 3), (MIME Type | 3), (URI | 3), (Flags | 1 | 5) "for example,
Where:
Data types include:
Data Units:
Therefore (User | 1 | 5) indicates that this information indicates the User. in Linux, this information is equivalent to UID, and the Data Type of the information is 1, that is, int, the unit of data is 5, that is, Id. Others are similar.
An actual log is as follows:
17:53:38 from 10 to 31. 288 1232 2211 I am_create_activity: [127, cn. company. photoeditor/com. android. gallery3d. filtershow. filterShowActivity, android. intent. action. EDIT, image/*, content: // media/external/images/media/4427,1], meaning:
The tag definition file in the source code is as follows:
Service/core/java/com/android/server/am/EventLogTags. logtags:
# See system/core/logcat/event.logtags for a description of the format of this file. option java_package com.android.server.am 2719 configuration_changed (config mask|1|5) 2721 cpu (total|1|6),(user|1|6),(system|1|6),(iowait|1|6),(irq|1|6),(softirq|1|6) # ActivityManagerService.systemReady() starts: 3040 boot_progress_ams_ready (time|2|3) # ActivityManagerService calls enableScreenAfterBoot(): 3050 boot_progress_enable_screen (time|2|3) # Do not change these names without updating the checkin_events setting in # google3/googledata/wireless/android/provisioning/gservices.config !! # # An activity is being finished: 30001 am_finish_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Reason|3) # A task is being brought to the front of the screen: 30002 am_task_to_front (User|1|5),(Task|1|5) # An existing activity is being given a new intent: 30003 am_new_intent (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Action|3),(MIME Type|3),(URI|3),(Flags|1|5) # A new task is being created: 30004 am_create_task (User|1|5),(Task ID|1|5) # A new activity is being created in an existing task: 30005 am_create_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Action|3),(MIME Type|3),(URI|3),(Flags|1|5) # An activity has been resumed into the foreground but was not already running: 30006 am_restart_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3) # An activity has been resumed and is now in the foreground: 30007 am_resume_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3) # Application Not Responding 30008 am_anr (User|1|5),(pid|1|5),(Package Name|3),(Flags|1|5),(reason|3) # Activity launch time 30009 am_activity_launch_time (User|1|5),(Token|1|5),(Component Name|3),(time|2|3) # Application process bound to work 30010 am_proc_bound (User|1|5),(PID|1|5),(Process Name|3) # Application process died 30011 am_proc_died (User|1|5),(PID|1|5),(Process Name|3) # The Activity Manager failed to pause the given activity. 30012 am_failed_to_pause (User|1|5),(Token|1|5),(Wanting to pause|3),(Currently pausing|3) # Attempting to pause the current activity 30013 am_pause_activity (User|1|5),(Token|1|5),(Component Name|3) # Application process has been started 30014 am_proc_start (User|1|5),(PID|1|5),(UID|1|5),(Process Name|3),(Type|3),(Component|3) # An application process has been marked as bad 30015 am_proc_bad (User|1|5),(UID|1|5),(Process Name|3) # An application process that was bad is now marked as good 30016 am_proc_good (User|1|5),(UID|1|5),(Process Name|3) # Reporting to applications that memory is low 30017 am_low_memory (Num Processes|1|1) # An activity is being destroyed: 30018 am_destroy_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Reason|3) # An activity has been relaunched, resumed, and is now in the foreground: 30019 am_relaunch_resume_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3) # An activity has been relaunched: 30020 am_relaunch_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3) # The activity's onPause has been called. 30021 am_on_paused_called (User|1|5),(Component Name|3),(Reason|3) # The activity's onResume has been called. 30022 am_on_resume_called (User|1|5),(Component Name|3),(Reason|3) # Kill a process to reclaim memory. 30023 am_kill (User|1|5),(PID|1|5),(Process Name|3),(OomAdj|1|5),(Reason|3) # Discard an undelivered serialized broadcast (timeout/ANR/crash) 30024 am_broadcast_discard_filter (User|1|5),(Broadcast|1|5),(Action|3),(Receiver Number|1|1),(BroadcastFilter|1|5) 30025 am_broadcast_discard_app (User|1|5),(Broadcast|1|5),(Action|3),(Receiver Number|1|1),(App|3) # A service is being created 30030 am_create_service (User|1|5),(Service Record|1|5),(Name|3),(UID|1|5),(PID|1|5) # A service is being destroyed 30031 am_destroy_service (User|1|5),(Service Record|1|5),(PID|1|5) # A process has crashed too many times, it is being cleared 30032 am_process_crashed_too_much (User|1|5),(Name|3),(PID|1|5) # An unknown process is trying to attach to the activity manager 30033 am_drop_process (PID|1|5) # A service has crashed too many times, it is being stopped 30034 am_service_crashed_too_much (User|1|5),(Crash Count|1|1),(Component Name|3),(PID|1|5) # A service is going to be restarted after its process went away 30035 am_schedule_service_restart (User|1|5),(Component Name|3),(Time|2|3) # A client was waiting for a content provider, but its process was lost 30036 am_provider_lost_process (User|1|5),(Package Name|3),(UID|1|5),(Name|3) # The activity manager gave up on a new process taking too long to start 30037 am_process_start_timeout (User|1|5),(PID|1|5),(UID|1|5),(Process Name|3) # Unhandled exception 30039 am_crash (User|1|5),(PID|1|5),(Process Name|3),(Flags|1|5),(Exception|3),(Message|3),(File|3),(Line|1|5) # Log.wtf() called 30040 am_wtf (User|1|5),(PID|1|5),(Process Name|3),(Flags|1|5),(Tag|3),(Message|3) # User switched 30041 am_switch_user (id|1|5) # Activity fully drawn time 30042 am_activity_fully_drawn_time (User|1|5),(Token|1|5),(Component Name|3),(time|2|3) # Activity focused 30043 am_focused_activity (User|1|5),(Component Name|3),(Reason|3) # Stack focus 30044 am_focused_stack (User|1|5),(Focused Stack Id|1|5),(Last Focused Stack Id|1|5),(Reason|3) # Running pre boot receiver 30045 am_pre_boot (User|1|5),(Package|3) # Report collection of global memory state 30046 am_meminfo (Cached|2|2),(Free|2|2),(Zram|2|2),(Kernel|2|2),(Native|2|2) # Report collection of memory used by a process 30047 am_pss (Pid|1|5),(UID|1|5),(Process Name|3),(Pss|2|2),(Uss|2|2),(SwapPss|2|2) # Attempting to stop an activity 30048 am_stop_activity (User|1|5),(Token|1|5),(Component Name|3) # The activity's onStop has been called. 30049 am_on_stop_called (User|1|5),(Component Name|3),(Reason|3) # Report changing memory conditions (Values are ProcessStats.ADJ_MEM_FACTOR* constants) 30050 am_mem_factor (Current|1|5),(Previous|1|5)
services/core/java/com/android/server/EventLogTags.logtags：
# See system/core/logcat/event.logtags for a description of the format of this file. option java_package com.android.server # --------------------------- # BatteryService.java # --------------------------- 2722 battery_level (level|1|6),(voltage|1|1),(temperature|1|1) 2723 battery_status (status|1|5),(health|1|5),(present|1|5),(plugged|1|5),(technology|3) # This is logged when battery goes from discharging to charging. # It lets us count the total amount of time between charges and the discharge level 2730 battery_discharge (duration|2|3),(minLevel|1|6),(maxLevel|1|6) # --------------------------- # PowerManagerService.java # --------------------------- # This is logged when the device is being forced to sleep (typically by # the user pressing the power button). 2724 power_sleep_requested (wakeLocksCleared|1|1) # This is logged when the screen on broadcast has completed 2725 power_screen_broadcast_send (wakelockCount|1|1) # This is logged when the screen broadcast has completed 2726 power_screen_broadcast_done (on|1|5),(broadcastDuration|2|3),(wakelockCount|1|1) # This is logged when the screen on broadcast has completed 2727 power_screen_broadcast_stop (which|1|5),(wakelockCount|1|1) # This is logged when the screen is turned on or off. 2728 power_screen_state (offOrOn|1|5),(becauseOfUser|1|5),(totalTouchDownTime|2|3),(touchCycles|1|1) # This is logged when the partial wake lock (keeping the device awake # regardless of whether the screen is off) is acquired or released. 2729 power_partial_wake_state (releasedorAcquired|1|5),(tag|3) # The device is being asked to go into a soft sleep (typically by the ungaze gesture). # It logs the time remaining before the device would've normally gone to sleep without the request. 2731 power_soft_sleep_requested (savedwaketimems|2) # # Leave IDs through 2739 for more power logs (2730 used by battery_discharge above) # # --------------------------- # DeviceStorageMonitorService.java # --------------------------- # The disk space free on the /data partition, in bytes 2744 free_storage_changed (data|2|2) # Device low memory notification and disk space free on the /data partition, in bytes at that time 2745 low_storage (data|2|2) # disk space free on the /data, /system, and /cache partitions in bytes 2746 free_storage_left (data|2|2),(system|2|2),(cache|2|2) # file on cache partition was deleted 2748 cache_file_deleted (path|3) # --------------------------- # NotificationManagerService.java # --------------------------- # when a NotificationManager.notify is called. status: 0=post, 1=update, 2=ignored 2750 notification_enqueue (uid|1|5),(pid|1|5),(pkg|3),(id|1|5),(tag|3),(userid|1|5),(notification|3),(status|1) # when someone tries to cancel a notification, the notification manager sometimes # calls this with flags too 2751 notification_cancel (uid|1|5),(pid|1|5),(pkg|3),(id|1|5),(tag|3),(userid|1|5),(required_flags|1),(forbidden_flags|1),(reason|1|5),(listener|3) # when someone tries to cancel all of the notifications for a particular package 2752 notification_cancel_all (uid|1|5),(pid|1|5),(pkg|3),(userid|1|5),(required_flags|1),(forbidden_flags|1),(reason|1|5),(listener|3) # when the notification panel is shown # Note: New tag range starts here since 2753+ have been used below. 27500 notification_panel_revealed (items|1) # when the notification panel is hidden 27501 notification_panel_hidden # when notifications are newly displayed on screen, or disappear from screen 27510 notification_visibility_changed (newlyVisibleKeys|3),(noLongerVisibleKeys|3) # when notifications are expanded, or contracted 27511 notification_expansion (key|3),(user_action|1),(expanded|1),(lifespan|1),(freshness|1),(exposure|1) # when a notification has been clicked 27520 notification_clicked (key|3),(lifespan|1),(freshness|1),(exposure|1) # when a notification action button has been clicked 27521 notification_action_clicked (key|3),(action_index|1),(lifespan|1),(freshness|1),(exposure|1) # when a notification has been canceled 27530 notification_canceled (key|3),(reason|1),(lifespan|1),(freshness|1),(exposure|1) # replaces 27510 with a row per notification 27531 notification_visibility (key|3),(visibile|1),(lifespan|1),(freshness|1),(exposure|1),(rank|1) # a notification emited noise, vibration, or light 27532 notification_alert (key|3),(buzz|1),(beep|1),(blink|1) # a notification was added to a autogroup 27533 notification_autogrouped (key|3) # notification was removed from an autogroup 275534 notification_unautogrouped (key|3) # --------------------------- # Watchdog.java # --------------------------- 2802 watchdog (Service|3) 2803 watchdog_proc_pss (Process|3),(Pid|1|5),(Pss|1|2) 2804 watchdog_soft_reset (Process|3),(Pid|1|5),(MaxPss|1|2),(Pss|1|2),(Skip|3) 2805 watchdog_hard_reset (Process|3),(Pid|1|5),(MaxPss|1|2),(Pss|1|2) 2806 watchdog_pss_stats (EmptyPss|1|2),(EmptyCount|1|1),(BackgroundPss|1|2),(BackgroundCount|1|1),(ServicePss|1|2),(ServiceCount|1|1),(VisiblePss|1|2),(VisibleCount|1|1),(ForegroundPss|1|2),(ForegroundCount|1|1),(NoPssCount|1|1) 2807 watchdog_proc_stats (DeathsInOne|1|1),(DeathsInTwo|1|1),(DeathsInThree|1|1),(DeathsInFour|1|1),(DeathsInFive|1|1) 2808 watchdog_scheduled_reboot (Now|2|1),(Interval|1|3),(StartTime|1|3),(Window|1|3),(Skip|3) 2809 watchdog_meminfo (MemFree|1|2),(Buffers|1|2),(Cached|1|2),(Active|1|2),(Inactive|1|2),(AnonPages|1|2),(Mapped|1|2),(Slab|1|2),(SReclaimable|1|2),(SUnreclaim|1|2),(PageTables|1|2) 2810 watchdog_vmstat (runtime|2|3),(pgfree|1|1),(pgactivate|1|1),(pgdeactivate|1|1),(pgfault|1|1),(pgmajfault|1|1) 2811 watchdog_requested_reboot (NoWait|1|1),(ScheduleInterval|1|3),(RecheckInterval|1|3),(StartTime|1|3),(Window|1|3),(MinScreenOff|1|3),(MinNextAlarm|1|3) # --------------------------- # BackupManagerService.java # --------------------------- 2820 backup_data_changed (Package|3) 2821 backup_start (Transport|3) 2822 backup_transport_failure (Package|3) 2823 backup_agent_failure (Package|3),(Message|3) 2824 backup_package (Package|3),(Size|1|2) 2825 backup_success (Packages|1|1),(Time|1|3) 2826 backup_reset (Transport|3) 2827 backup_initialize 2828 backup_requested (Total|1|1),(Key-Value|1|1),(Full|1|1) 2829 backup_quota_exceeded (Package|3) 2830 restore_start (Transport|3),(Source|2|5) 2831 restore_transport_failure 2832 restore_agent_failure (Package|3),(Message|3) 2833 restore_package (Package|3),(Size|1|2) 2834 restore_success (Packages|1|1),(Time|1|3) 2840 full_backup_package (Package|3) 2841 full_backup_agent_failure (Package|3),(Message|3) 2842 full_backup_transport_failure 2843 full_backup_success (Package|3) 2844 full_restore_package (Package|3) 2845 full_backup_quota_exceeded (Package|3) 2850 backup_transport_lifecycle (Transport|3),(Bound|1|1) # --------------------------- # SystemServer.java # --------------------------- # SystemServer.run() starts: 3010 boot_progress_system_run (time|2|3) # --------------------------- # PackageManagerService.java # --------------------------- # Package Manager starts: 3060 boot_progress_pms_start (time|2|3) # Package Manager .apk scan starts: 3070 boot_progress_pms_system_scan_start (time|2|3) # Package Manager .apk scan starts: 3080 boot_progress_pms_data_scan_start (time|2|3) # Package Manager .apk scan ends: 3090 boot_progress_pms_scan_end (time|2|3) # Package Manager ready: 3100 boot_progress_pms_ready (time|2|3) # + check activity_launch_time for Home app # Value of "unknown sources" setting at app install time 3110 unknown_sources_enabled (value|1) # Package Manager critical info 3120 pm_critical_info (msg|3) # --------------------------- # WindowManagerService.java # --------------------------- # Out of memory for surfaces. 31000 wm_no_surface_memory (Window|3),(PID|1|5),(Operation|3) # Task created. 31001 wm_task_created (TaskId|1|5),(StackId|1|5) # Task moved to top (1) or bottom (0). 31002 wm_task_moved (TaskId|1|5),(ToTop|1),(Index|1) # Task removed with source explanation. 31003 wm_task_removed (TaskId|1|5),(Reason|3) # Stack created. 31004 wm_stack_created (StackId|1|5) # Home stack moved to top (1) or bottom (0). 31005 wm_home_stack_moved (ToTop|1) # Stack removed. 31006 wm_stack_removed (StackId|1|5) # bootanim finished: 31007 wm_boot_animation_done (time|2|3) # --------------------------- # InputMethodManagerService.java # --------------------------- # Re-connecting to input method service because we haven't received its interface 32000 imf_force_reconnect_ime (IME|4),(Time Since Connect|2|3),(Showing|1|1) # --------------------------- # WallpaperManagerService.java # --------------------------- 33000 wp_wallpaper_crashed (component|3) # --------------------------- # Device idle # --------------------------- 34000 device_idle (state|1|5), (reason|3) 34001 device_idle_step 34002 device_idle_wake_from_idle (is_idle|1|5), (reason|3) 34003 device_idle_on_start 34004 device_idle_on_phase (what|3) 34005 device_idle_on_complete 34006 device_idle_off_start (reason|3) 34007 device_idle_off_phase (what|3) 34008 device_idle_off_complete 34009 device_idle_light (state|1|5), (reason|3) 34010 device_idle_light_step # --------------------------- # DisplayManagerService.java # --------------------------- # Auto-brightness adjustments by the user. 35000 auto_brightness_adj (old_adj|5),(old_lux|5),(old_brightness|5),(old_gamma|5),(new_adj|5),(new_lux|5),(new_brightness|5),(new_gamma|5) # --------------------------- # ConnectivityService.java # --------------------------- # Connectivity state changed 50020 connectivity_state_changed (type|1),(subtype|1),(state|1) # --------------------------- # NetworkStatsService.java # --------------------------- 51100 netstats_mobile_sample (dev_rx_bytes|2|2),(dev_tx_bytes|2|2),(dev_rx_pkts|2|1),(dev_tx_pkts|2|1),(xt_rx_bytes|2|2),(xt_tx_bytes|2|2),(xt_rx_pkts|2|1),(xt_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1),(trusted_time|2|3) 51101 netstats_wifi_sample (dev_rx_bytes|2|2),(dev_tx_bytes|2|2),(dev_rx_pkts|2|1),(dev_tx_pkts|2|1),(xt_rx_bytes|2|2),(xt_tx_bytes|2|2),(xt_rx_pkts|2|1),(xt_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1),(trusted_time|2|3) # --------------------------- # LockdownVpnTracker.java # --------------------------- 51200 lockdown_vpn_connecting (egress_net|1) 51201 lockdown_vpn_connected (egress_net|1) 51202 lockdown_vpn_error (egress_net|1) # --------------------------- # ConfigUpdateInstallReceiver.java # --------------------------- 51300 config_install_failed (dir|3) # --------------------------- # IntentFirewall.java # --------------------------- 51400 ifw_intent_matched (Intent Type|1|5),(Component Name|3),(Caller Uid|1|5),(Caller Pkg Count|1|1),(Caller Pkgs|3),(Action|3),(MIME Type|3),(URI|3),(Flags|1|5) # --------------------------- # IdleMaintenanceService.java # --------------------------- 51500 idle_maintenance_window_start (time|2|3), (lastUserActivity|2|3), (batteryLevel|1|6), (batteryCharging|1|5) 51501 idle_maintenance_window_finish (time|2|3), (lastUserActivity|2|3), (batteryLevel|1|6), (batteryCharging|1|5) # --------------------------- # MountService.java # --------------------------- 2755 fstrim_start (time|2|3) 2756 fstrim_finish (time|2|3) # --------------------------- # AudioService.java # --------------------------- 40000 volume_changed (stream|1), (prev_level|1), (level|1), (max_level|1), (caller|3) 40001 stream_devices_changed (stream|1), (prev_devices|1), (devices|1) # --------------------------- # GestureLauncherService.java # --------------------------- 40100 camera_gesture_triggered (gesture_on_time|2|3), (sensor1_on_time|2|3), (sensor2_on_time|2|3), (event_extra|1|1)
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