{"id":5237,"date":"2024-04-08T14:33:00","date_gmt":"2024-04-08T06:33:00","guid":{"rendered":"https:\/\/blog.coderfan.org\/?p=5237"},"modified":"2024-04-10T09:24:12","modified_gmt":"2024-04-10T01:24:12","slug":"android-system-anr-analysis","status":"publish","type":"post","link":"https:\/\/blog.coderfan.org\/en\/android-system-anr-analysis.html","title":{"rendered":"Android\u7cfb\u7edfANR\u6d45\u6790"},"content":{"rendered":"
\n
\n \t<\/i> Read Time:<\/span>7 Minute, 7 Second <\/div>\n\n <\/div>\n

ANR\u5168\u79f0\u4e3aApplication Not Response,\u662f\u7531\u4e8eApp\u4e3b\u7ebf\u7a0b\u957f\u65f6\u95f4\u5361\u6ede\u5bfc\u81f4\u7684\u3002ANR\u5e76\u4e0d\u4ee3\u8868\u6211\u4eec\u7684\u5e94\u7528\u4ee3\u7801\u4e00\u5b9a\u5b58\u5728\u7f16\u7801\u95ee\u9898\uff0c\u901a\u5e38\u4e0d\u4f1a\u5bfc\u81f4FATAL EXECPTION\u3002\u76f4\u89c2\u4e0a\u6765\u8bb2\uff0cANR\u53d1\u751f\u65f6\u5e94\u7528\u4f1a\u65e0\u6cd5\u53ca\u65f6\u54cd\u5e94\u7528\u6237\u64cd\u4f5c\uff0c\u8fd9\u4f1a\u6781\u5927\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n\n\n\n

Android APP\u5f00\u53d1\u4e2d\u7684\u56db\u5927\u57fa\u7840\u7ec4\u4ef6\u4e2dService\u3001BroadcastReceiver\u4e0eContentProvider\u4ee5\u53caInput\u90fd\u4f1a\u53bb\u68c0\u6d4bANR\u8d85\u65f6\uff0c\u8fd9\u91cc\u4ee5Service\u4e3a\u4f8b\uff0c\u7b80\u8ff0ANR\u4ea7\u751f\u7684\u539f\u56e0\uff1a<\/p>\n\n\n\n

\u5f53\u6211\u4eec\u7684\u5e94\u7528\u7ec4\u4ef6\u901a\u8fc7startService\u542f\u52a8\u4e00\u4e2aService\u65f6\uff0c\u4f1a\u901a\u8fc7binder\u901a\u77e5AMS\u542f\u52a8Service\uff0cAMS\u5728\u7ecf\u8fc7\u4e00\u7cfb\u5217\u903b\u8f91\u5904\u7406\u540e\u5224\u65ad\u53ef\u4ee5\u542f\u52a8\uff0c\u5c31\u4f1a\u901a\u8fc7binder\u901a\u77e5\u5e94\u7528\u6240\u5728\u8fdb\u7a0b\u521b\u5efa\u4e00\u4e2aService\u5e76\u6267\u884cService\u7684onCreate\u751f\u547d\u5468\u671f\uff0c\u4e0e\u6b64\u540c\u65f6AMS\u4f1a\u901a\u8fc7handler\u53d1\u9001\u4e00\u4e2a\u5ef6\u65f6\u4efb\u52a1\uff0c\u6b64\u5ef6\u65f6\u4efb\u52a1\u5c31\u662fANR\u4efb\u52a1\u3002\u5728\u5e94\u7528\u8fdb\u7a0bService\u751f\u547d\u5468\u671f\u6267\u884c\u5b8c\u540e\u5c31\u4f1a\u901a\u8fc7binder\u544a\u77e5AMS\u89e3\u9664ANR\u4efb\u52a1\uff1b\u5982\u679c\u5e94\u7528\u8fdb\u7a0bService\u751f\u547d\u5468\u671f\u8d85\u65f6,AMS\u5185\u7684ANR\u4efb\u52a1\u5c31\u4f1a\u6267\u884c\uff0c\u4ece\u800c\u8bb0\u5f55ANR\u62a5\u9519\u5e76dump\u5f53\u524d\u7cfb\u7edf\u72b6\u6001\u3002<\/p>\n\n\n\n

\u673a\u5236\u89e3\u6790<\/h3>\n\n\n\n

\u8fd9\u91cc\u7684\u673a\u5236\u89e3\u6790\uff0c\u6211\u4eec\u5206\u522b\u4ece\u5e94\u7528APP\u4ee5\u53caAMS\u7684\u89d2\u5ea6\u6765\u8fdb\u884c\uff0c\u5e76\u4e14\u4ee5Android14\u7684\u4ee3\u7801\u8fdb\u884c\u4f50\u8bc1\u5206\u6790\u3002\u9996\u5148\u662f\u5e94\u7528App\u8c03\u7528startService\u542f\u52a8\u670d\u52a1\uff1a<\/p>\n\n\n\n

Intent serviceIntent = new Intent(context, MyService.class);\ncontext.startService(serviceIntent);<\/code><\/pre>\n\n\n\n
\u5728\u901a\u8fc7startService\u542f\u52a8\u670d\u52a1\u540e\uff0c\u7a0b\u5e8f\u8c03\u7528\u4f1a\u8fdb\u5165\u5230ContextImpl.java\u5185\uff1a<\/p>\n\n\n\n
\/\/frameworks\/base\/core\/java\/android\/app\/ContextImpl.java\n@Override\npublic ComponentName startService(Intent service) {\n        warnIfCallingFromSystemProcess();\n        return startServiceCommon(service, false, mUser);\n}\n\nprivate ComponentName startServiceCommon(Intent service, boolean requireForeground,\n         UserHandle user) {\n\t   \/\/startService\u6838\u5fc3\n\t    validateServiceIntent(service);\n            service.prepareToLeaveProcess(this);\n            ComponentName cn = ActivityManager.getService().startService(\n               mMainThread.getApplicationThread(), service,\n               service.resolveTypeIfNeeded(getContentResolver()),requireForeground,\n               getOpPackageName(), getAttributionTag(), user.getIdentifier());\n}<\/code><\/pre>\n\n\n\n
\u63a5\u4e0b\u6765\u6211\u4eec\u8fdb\u5165ActivityManagerService\uff0c\u4e5f\u5c31\u662fAMS\u5185\u90e8\uff1a<\/p>\n\n\n\n
\/\/frameworks\/base\/services\/core\/java\/com\/android\/server\/am\/ActivityManagerService.java\npublic ComponentName startService(IApplicationThread caller, Intent service,\n            String resolvedType, boolean requireForeground, String callingPackage,\n            String callingFeatureId, int userId)\n            throws TransactionTooLargeException {\n            return startService(caller, service, resolvedType, \n            requireForeground,callingPackage,callingFeatureId, userId, false \/* \n            isSdkSandboxService *\/, INVALID_UID, null, null);\n}\n\nprivate ComponentName startService(IApplicationThread caller, Intent service,\n    String resolvedType, boolean requireForeground, String callingPackage,\n    String callingFeatureId, int userId, boolean isSdkSandboxService,\n    int sdkSandboxClientAppUid, String sdkSandboxClientAppPackage, String instanceName)\n{\n\t\/\/mServices\u5c5e\u4e8eActiveServices\u5bf9\u8c61\n        res = mServices.startServiceLocked(caller, service,\n                 resolvedType, callingPid, callingUid,\n                 requireForeground, callingPackage, callingFeatureId, userId,\n                 isSdkSandboxService,\n                 sdkSandboxClientAppUid,sdkSandboxClientAppPackage,\n                 instanceName);\n         \n}<\/code><\/pre>\n\n\n\n
\u7d27\u63a5\u7740\u6211\u4eec\u8fdb\u5165ActiveServices\u7c7b\uff1a<\/p>\n\n\n\n
\/\/frameworks\/base\/services\/core\/java\/com\/android\/server\/am\/ActiveServices.java\nComponentName startServiceLocked(IApplicationThread caller, Intent service, String resolvedType,int callingPid, int callingUid, boolean fgRequired,String callingPackage, @Nullable String callingFeatureId, final int userId,BackgroundStartPrivileges backgroundStartPrivileges, boolean isSdkSandboxService,\nint sdkSandboxClientAppUid, String sdkSandboxClientAppPackage, String instanceName)\n{\n\nfinal ComponentName realResult =\n                startServiceInnerLocked(r, service, callingUid, callingPid,\n                callingProcessName, callingProcessState,\n                fgRequired, callerFg,\n                backgroundStartPrivileges, callingPackage);\n\t\u2026\u2026\n}\n\n\/\/frameworks\/base\/services\/core\/java\/com\/android\/server\/am\/ActiveServices.java\nComponentName startServiceInnerLocked(ServiceMap smap, Intent service, ServiceRecord r,boolean callerFg, boolean addToStarting, int callingUid, String callingProcessName,int callingProcessState, boolean wasStartRequested, String callingPackage)\n{\n     final int uid = r.appInfo.uid;\n     final String packageName = r.name.getPackageName();\n     final String serviceName = r.name.getClassName();\n     FrameworkStatsLog.write(FrameworkStatsLog.SERVICE_STATE_CHANGED, uid, \n     packageName,serviceName,FrameworkStatsLog.SERVICE_STATE_CHANGED__STATE__START);\n     mAm.mBatteryStatsService.noteServiceStartRunning(uid, packageName, serviceName);\n     \/\/\u542f\u52a8Service\u7684\u6838\u5fc3\n     String error = bringUpServiceLocked(r, service.getFlags(), callerFg,\n                false \/* whileRestarting *\/,\n                false \/* permissionsReviewRequired *\/,\n                false \/* packageFrozen *\/,\n                true \/* enqueueOomAdj *\/);\n}\n<\/code><\/pre>\n\n\n\n
\u5728startServiceInnerLocked\u4e2d\u4f1a\u8fdb\u5165\u5230bringUpServiceInnerLocked,\u8fd9\u91cc\u9762\u4f1a\u5206\u4e24\u79cd\u60c5\u51b5\u8fdb\u884c\u4e0b\u4e00\u6b65\u5904\u7406\u3002<\/p>\n\n\n\n
\u4e00\u79cd\u60c5\u51b5\u662f\u5982\u679cService\u6240\u5728\u7684App\u8fdb\u7a0b\u5df2\u7ecf\u542f\u52a8\uff0c\u5219\u4f1a\u8c03\u7528realStartServiceLocked\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
\/\/frameworks\/base\/services\/core\/java\/com\/android\/server\/am\/ActiveServices.java\nif (app != null) {\n    app.addPackage(r.appInfo.packageName, r.appInfo.longVersionCode,\tmAm.mProcessStats);\n    \/\/\u5f53APP\u5df2\u7ecf\u542f\u52a8\u65f6\uff0c\u542f\u52a8service\n    realStartServiceLocked(r, app, thread, pid, uidRecord, execInFg,enqueueOomAdj);\n}\n\n\/\/\u8fdb\u5165realStartServiceLocked\u5185\u901a\u8fc7scheduleCreateService\u521b\u5efaservice\nprivate void realStartServiceLocked(ServiceRecord r, ProcessRecord app,\n      IApplicationThread thread, int pid, UidRecord uidRecord, boolean execInFg,\n      boolean enqueueOomAdj) throws RemoteException {\n       \u2026\u2026\n\tboolean created = false;\n        try {\n\t\/\/\u8fd9\u91cc\u7684thread\u5bf9\u8c61\u4ee3\u8868\u5e94\u7528\u8fdb\u7a0b\u7684ApplicationThread\n        thread.scheduleCreateService(r, r.serviceInfo,\n        null \/* compatInfo (unused but need to keep method signature) *\/,\n        app.mState.getReportedProcState());\n        r.postNotification(false);\n        created = true;\n     }\n}<\/code><\/pre>\n\n\n\n
\u53e6\u4e00\u79cd\u60c5\u51b5\u662f\u5982\u679cApp\u8fdb\u7a0b\u672a\u542f\u52a8\uff0c\u53c8\u53ef\u7ec6\u5206\u4e3a\u4e24\u7c7b\uff1a<\/p>\n\n\n\n
\/\/frameworks\/base\/services\/core\/java\/com\/android\/server\/am\/ActiveServices.java\nif (app == null && !permissionsReviewRequired && !packageFrozen) {\t  \n     if (r.isSdkSandbox) {\n                final int uid = Process.toSdkSandboxUid(r.sdkSandboxClientAppUid);\n                app = mAm.startSdkSandboxProcessLocked(procName, r.appInfo, true, \n                intentFlags,hostingRecord, ZYGOTE_POLICY_FLAG_EMPTY, uid, \n                r.sdkSandboxClientAppPackage);\n                r.isolationHostProc = app;\n            } else {\n                app = mAm.startProcessLocked(procName, r.appInfo, true, intentFlags,\n                        hostingRecord, ZYGOTE_POLICY_FLAG_EMPTY, false, isolated);\n            }\n\n}<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u4ee5App\u5df2\u542f\u52a8\u4e3a\u4f8b\uff0c\u901a\u8fc7realStartServiceLocked\u542f\u52a8Service\uff0c\u6700\u7ec8\u4f1a\u8fdb\u5165\u5230scheduleServiceTimeoutLocked\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
\/\/frameworks\/base\/services\/core\/java\/com\/android\/server\/am\/ActiveServices.java\nvoid scheduleServiceTimeoutLocked(ProcessRecord proc) {\n   if (proc.mServices.numberOfExecutingServices() == 0 || proc.getThread() == null) {\n            return;\n     }\n    Message msg = mAm.mHandler.obtainMessage(\nActivityManagerService.SERVICE_TIMEOUT_MSG);\n        msg.obj = proc;\n        mAm.mHandler.sendMessageDelayed(msg, proc.mServices.shouldExecServicesFg()\n                ? mAm.mConstants.SERVICE_TIMEOUT : mAm.mConstants.SERVICE_BACKGROUND_TIMEOUT);\n}<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5728scheduleServiceTimeoutLocked\u4e2d\u901a\u8fc7handler\u4e3aService\u542f\u52a8\u8bbe\u5b9a\u4e86\u8d85\u65f6\u4efb\u52a1\uff0c\u8fd9\u91cc\u7684\u8d85\u65f6\u65f6\u95f4\u6709\u4e24\u4e2a\u503c\uff1a\u9488\u5bf9\u524d\u53f0\u670d\u52a1\u662f20s\uff0c\u9488\u5bf9\u540e\u53f0\u670d\u52a1\u662f200s.<\/p>\n\n\n\n
DEFAULT_SERVICE_TIMEOUT = 20 * 1000 * Build.HW_TIMEOUT_MULTIPLIER;\nDEFAULT_SERVICE_BACKGROUND_TIMEOUT = DEFAULT_SERVICE_TIMEOUT * 10;<\/code><\/pre>\n\n\n\n
\u81f3\u6b64\u5728AMS\u4e2d\u7684\u4efb\u52a1\u5df2\u7ecf\u544a\u4e00\u6bb5\u843d\uff0c\u63a5\u7740\u6211\u4eec\u56de\u5230\u5e94\u7528App\u81ea\u8eab\uff0c\u524d\u9762\u8bb2\u5230\u5728realStartServiceLocked\u65b9\u6cd5\u4e2d\u901a\u8fc7App\u7684ApplicationThread\u7684scheduleCreateService\u521b\u5efaservice\uff0c\u8fd9\u91cc\u6700\u7ec8\u8fdb\u5165\u7684\u662fActivityThread.java\u4e2dscheduleCreateService\uff1a<\/p>\n\n\n\n
public final void scheduleCreateService(IBinder token,\n      ServiceInfo info, CompatibilityInfo compatInfo, int processState) {\n      updateProcessState(processState, false);\n      CreateServiceData s = new CreateServiceData();\n       s.token = token;\n       s.info = info;\n\n        sendMessage(H.CREATE_SERVICE, s);\n }<\/code><\/pre>\n\n\n\n
\u6cbf\u7740\u8c03\u7528\u94fe\u7ee7\u7eed\u8ffd\u8e2a\uff0c\u6700\u7ec8\u56de\u5230\u4e86ActiveServices.java\u5185\u7684serviceDoneExecutingLocked\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
\/\/frameworks\/base\/services\/core\/java\/com\/android\/server\/am\/ActiveServices.java\nprivate void serviceDoneExecutingLocked(ServiceRecord r, boolean inDestroying,\n     boolean finishing, boolean enqueueOomAdj, @OomAdjReason int oomAdjReason) {\nfinal ProcessServiceRecord psr = r.app.mServices;\n          if (DEBUG_SERVICE) Slog.v(TAG_SERVICE,\"Nesting at 0 of \" + r.shortInstanceName);\n                psr.setExecServicesFg(false);\n                psr.stopExecutingService(r);\n                if (psr.numberOfExecutingServices() == 0) {\n                    if (DEBUG_SERVICE || DEBUG_SERVICE_EXECUTING) Slog.v(TAG_SERVICE_EXECUTING, \"No more executingServices of \" + r.shortInstanceName);\nmAm.mHandler.removeMessages(ActivityManagerService.SERVICE_TIMEOUT_MSG, r.app);\n} else if (r.executeFg) {\n    \u2026\u2026\n  }\n}<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5728Service\u521b\u5efa\u5b8c\u6210\u4e4b\u540e\uff0c\u4f1a\u901a\u8fc7handler\u5c06\u4e4b\u524d\u7684ANR\u4efb\u52a1\u89e3\u9664\u3002<\/p>\n\n\n\n
\u65e5\u5fd7\u89e3\u6790<\/h3>\n\n\n\n
Android\u539f\u751f\u8bb0\u5f55\u7684ANR\u65e5\u5fd7\u90fd\u4f4d\u4e8e\/data\/anr\u6587\u4ef6\u5939\u5185\uff0c\u5f53\u5e94\u7528\u53d1\u751fANR\u65f6\uff0c\u7cfb\u7edf\u53ef\u80fd\u4f1a\u5b58\u5728\u95ee\u9898\u4ece\u800c\u5bfc\u81f4\u4f17\u591a\u5e94\u7528\u90fd\u4f1a\u53d1\u751fANR\uff0c\u9488\u5bf9ANR\u65e5\u5fd7\u6211\u4eec\u91cd\u70b9\u662f\u9700\u8981\u5b66\u4f1a\u5982\u4f55\u5206\u6790\u65e5\u5fd7\uff0c\u627e\u5230ANR\u7684root cause\u3002<\/p>\n\n\n\n
\u5f53\u6211\u4eec\u901a\u8fc7adb\u6253\u5f00\/data\/anr\u6587\u4ef6\u5939\u65f6\uff0c\u6211\u4eec\u80fd\u591f\u770b\u5230\u5982\u4e0b\u6240\u793a\u5185\u5bb9\uff1a<\/p>\n\n\n\n
anr_2024-03-31-02-16-39-479\nanr_2024-03-31-02-17-21-731\nanr_2024-03-31-02-17-58-405\n\u2026<\/code><\/pre>\n\n\n\n
\u6240\u6709\u7684anr\u65e5\u5fd7\u90fd\u4ee5anr_xxxx\u5f00\u5934\uff0c\u65e5\u5fd7\u6587\u4ef6\u4f1a\u643a\u5e26\u65f6\u95f4\u4fe1\u606f\uff0c\u7528\u4e8e\u8868\u660e\u8be5anr\u6355\u83b7\u7684\u65f6\u95f4\uff1b<\/p>\n\n\n\n
\u6211\u4eec\u6253\u5f00anr\u65e5\u5fd7\u6587\u4ef6\uff0c\u6709\u4e00\u4e9b\u5173\u952e\u5b57\u6bb5\u7684\u4fe1\u606f\u662f\u6781\u5176\u91cd\u8981\u7684\u3002<\/p>\n\n\n\n
subject\u5b57\u6bb5<\/strong>\u5f00\u5934\u7684\u65e5\u5fd7\u8868\u660eanr\u53d1\u751f\u7684\u95ee\u9898\u539f\u56e0\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
Subject: Input dispatching timed out (141c2c9 com.blacksesame.video\/com.example.video.ui.activity.VideoPlayActivity (server) is not responding. Waited 5000ms for MotionEvent(deviceId=4, eventTime=225178371585000, source=TOUCHSCREEN, displayId=2, action=DOWN, actionButton=0x00000000, flags=0x00000000, metaState=0x00000000, buttonState=0x00000000, classification=NONE, edgeFlags=0x00000000, xPrecision=8.5, yPrecision=13.3, xCursorPosition=nan, yCursorPosition=nan, pointers=[0: (756.5, 645.2)]), policyFlags=0x62000001).<\/code><\/pre>\n\n\n\n
\u4e0a\u8ff0\u9519\u8bef\u8868\u660e\u5728com.example.video\u5e94\u7528\u4e2d\u7684VideoPlayActivity\u53d1\u751f\u4e86anr\uff0canr\u7684\u539f\u56e0\u662f\u7531\u4e8eInput dispatch\u8d85\u65f6\uff0c\u8868\u660eInput\u5206\u53d1\u5b58\u5728\u5361\u6ede\u5bfc\u81f4\u6ca1\u6709\u54cd\u5e94\u7528\u6237\u8f93\u5165\u3002<\/p>\n\n\n\n
events\u5b57\u6bb5<\/strong>\u7528\u4e8e\u8bb0\u5f55\u8be5ANR\u53d1\u751f\u4e4b\u524d\u7684ANR\u8bb0\u5f55\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
events <\n  timestamp_ms: 1711851399478\n  anr <\n    pid: 2564\n    process: \"com.example.video\"\n    process_class: 1\n    subject: \"Input dispatching timed out (141c2c9 com.blacksesame.video\/com.example.video.ui.activity.VideoPlayActivity (server) is not responding. Waited 5000ms for MotionEvent(deviceId=4, eventTime=225178371[...]\"\n    uid: 10114\n  >\n>\nevents <\n  timestamp_ms: 1711851441487\n  half_watchdog <\n    subject: \"Blocked in monitor com.android.server.am.ActivityManagerService on monitor thread (watchdog.monitor) for 30s, Blocked in handler on  on foreground thread (android.fg) for 30s, Blocked in handler on  o[...]\"\n  >\n>\n<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u7684events\u8bb0\u5f55\u4e86\u4e24\u6b21ANR\uff0c\u8fd9\u4e9bANR\u90fd\u53d1\u751f\u5728\u672c\u6b21ANR\u4e4b\u524d\uff0c\u53ef\u4ee5\u4f5c\u4e3aANR\u95ee\u9898\u53d1\u751f\u65f6\u7684\u8f85\u52a9\u4fe1\u606f\u3002<\/p>\n\n\n\n
\u4e0a\u8ff0\u5185\u5bb9\u662f\u4e00\u4e9b\u4fe1\u606f\u603b\u89c8\uff0c\u7528\u4e8e\u6211\u4eec\u5feb\u901f\u83b7\u53d6\u4fe1\u606f\uff0c\u5177\u4f53\u7684\u62a5\u9519\u65e5\u5fd7\u9700\u8981\u901a\u8fc7dumping pid\u5b57\u6bb5\u8fdb\u884c\u5206\u6790\uff0c\u5982\u4e0b\u6240\u793a:<\/p>\n\n\n\n
----- dumping pid: 710 at 225225702\n\n----- pid 710 at 2024-03-31 02:17:21.735883895+0000 -----\nCmd line: system_server\nBuild fingerprint: 'c1200_aaos\/c1200:14\/UQ1A.231205.015.A1\/V1.1.3.0:userdebug\/test-keys'\nABI: 'arm64'\nBuild type: optimized\nsuspend all histogram:\tSum: 11.916ms 99% C.I. 1us-1476.159us Avg: 85.726us Max: 2919us\nDALVIK THREADS (181):\n\/\/\u201cmain\u201d\u4e0etid=1\u8868\u660e\u5c5e\u4e8e\u4e3b\u7ebf\u7a0b,Blocked\u8868\u660e\u4e3b\u7ebf\u7a0b\u5c5e\u4e8eBlock\u72b6\u6001\n\"main\" prio=5 tid=1 Blocked\n  | group=\"main\" sCount=1 ucsCount=0 flags=1 obj=0x71e344c8 self=0xb400f270432d4be0\n  | sysTid=710 nice=-2 cgrp=foreground sched=0\/0 handle=0xf271325994f8\n  | state=S schedstat=( 13723566710 13467097570 113753 ) utm=1082 stm=289 core=3 HZ=100\n  | stack=0xffffc7177000-0xffffc7179000 stackSize=8188KB\n\/\/\u8868\u660e\u53d1\u751f\u6b7b\u9501\n  | held mutexes=\n  at com.android.server.am.ActivityManagerService.broadcastIntentWithFeature(ActivityManagerService.java:15389)\n\/\/\u5173\u952e\u4fe1\u606f\uff0c\u5bf9\u5e94lock\u88abthread 14\u5360\u6709\n  - waiting to lock <0x0d8bc079> (a com.android.server.am.ActivityManagerService) held by thread 14\n  at android.app.ContextImpl.sendBroadcastAsUser(ContextImpl.java:1478)\n  at com.android.server.alarm.AlarmManagerService$3.lambda$doAlarm$0(AlarmManagerService.java:1995)\n  at com.android.server.alarm.AlarmManagerService$3.$r8$lambda$o_OrcmiwSegk0Cl6DW0Phad6Mm8(AlarmManagerService.java:0)\n  at com.android.server.alarm.AlarmManagerService$3$$ExternalSyntheticLambda0.run(R8$$SyntheticClass:0)\n  at android.os.Handler.handleCallback(Handler.java:958)\n  at android.os.Handler.dispatchMessage(Handler.java:99)\n  at android.os.Looper.loopOnce(Looper.java:205)\n  at android.os.Looper.loop(Looper.java:294)\n  at com.android.server.SystemServer.run(SystemServer.java:973)\n  at com.android.server.SystemServer.main(SystemServer.java:667)\n  at java.lang.reflect.Method.invoke(Native method)\n  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)\n  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:949)\n<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u53d1\u751f\u7684\u95ee\u9898\u5728\u4e8edead lock\uff0c\u4e14lock\u88ab\u540c\u4e00\u8fdb\u7a0b\u5185\u7684\u5176\u4ed6\u7ebf\u7a0b\uff08Thread 14\uff09\u6301\u6709\uff0c\u6211\u4eec\u770b\u770b\u6b64\u65f6Thread 14\u6b64\u65f6\u7684\u72b6\u6001\uff1a<\/p>\n\n\n\n
\"android.ui\" prio=5 tid=14 Native\n  | group=\"main\" sCount=1 ucsCount=0 flags=1 obj=0x14c01c28 self=0xb400f2704330c5e0\n  | sysTid=729 nice=-10 cgrp=top-app sched=0\/0 handle=0xf26ddf04bcb0\n  | state=S schedstat=( 754225290 619216305 2951 ) utm=55 stm=20 core=0 HZ=100\n  | stack=0xf26ddef48000-0xf26ddef4a000 stackSize=1039KB\n  | held mutexes=\n  native: #00 pc 000aa698  \/apex\/com.android.runtime\/lib64\/bionic\/libc.so (__ioctl+8) (BuildId: c74277f481a383c87215b672f6465e24)\n  native: #01 pc 00063668  \/apex\/com.android.runtime\/lib64\/bionic\/libc.so (ioctl+156) (BuildId: c74277f481a383c87215b672f6465e24)\n  native: #02 pc 0005e294  \/system\/lib64\/libbinder.so (android::IPCThreadState::talkWithDriver+280) (BuildId: 1570a59fb47f18bdbd3b7aa21d8ceedc)\n  native: #03 pc 0005f5f0  \/system\/lib64\/libbinder.so (android::IPCThreadState::waitForResponse+60) (BuildId: 1570a59fb47f18bdbd3b7aa21d8ceedc)\n  native: #04 pc 0005f330  \/system\/lib64\/libbinder.so (android::IPCThreadState::transact+216) (BuildId: 1570a59fb47f18bdbd3b7aa21d8ceedc)\n  native: #05 pc 00076640  \/system\/lib64\/libbinder.so (android::BpBinder::transact+188) (BuildId: 1570a59fb47f18bdbd3b7aa21d8ceedc)\n  native: #06 pc 00114d1c  \/system\/lib64\/libgui.so (android::gui::BpSurfaceComposer::captureLayers+436) (BuildId: d6c3eaedda5518d14dd35993bc419095)\n  native: #07 pc 000ff578  \/system\/lib64\/libgui.so (android::ScreenshotClient::captureLayers+88) (BuildId: d6c3eaedda5518d14dd35993bc419095)\n  native: #08 pc 00205fd8  \/system\/lib64\/libandroid_runtime.so (android::nativeCaptureLayers+340) (BuildId: e18d4023419fc50e2dfbce708dce5ae6)\n  at android.window.ScreenCapture.\uff1b(Native method)\n  at android.window.ScreenCapture.captureLayers(ScreenCapture.java:173)\n  at android.window.ScreenCapture.captureLayers(ScreenCapture.java:136)\n  at android.window.ScreenCapture.captureLayersExcluding(ScreenCapture.java:163)<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5728\u540d\u4e3aandroid.ui\u7684\u7ebf\u7a0b\u5185\uff0c\u901a\u8fc7jni\u8c03\u7528\u8fdb\u5165\u5230\u4e86libgui\u6240\u63d0\u4f9b\u7684captureLayers\u65b9\u6cd5\uff0c\u5176\u4f5c\u4e3abp\u7aef\uff0c\u5bf9\u5e94\u7684\u5b9e\u73b0\u5728SurfaceFlinger\u8fdb\u7a0b\u3002\u6b64\u65f6\u6211\u4eec\u5e94\u5f53\u53bb\u89c2\u5bdfSurfaceFlinger\u53ca\u5176\u76f8\u5173\u7ec4\u4ef6(Gralloc Mapper,Grolloc Allocator,HWC\u7b49)\uff0c\u4ece\u800c\u8fdb\u884c\u4e0b\u4e00\u6b65\u8ffd\u67e5\u3002<\/p>\n\n\n\n
\u4ee5\u4e0a\u5c31\u662f\u4e00\u4e2aANR\u65e5\u5fd7\u5206\u6790\u7684\u5927\u81f4\u6b65\u9aa4\u3002<\/p>\n\n\n\n
\u89c4\u907f\u63aa\u65bd<\/h3>\n\n\n\n
\u5927\u591a\u6570ANR\u53d1\u751f\u90fd\u662f\u7531\u4e8e\u5e94\u7528\u7f16\u7801\u4e0d\u89c4\u8303\u5bfc\u81f4\u7684\uff0c\u5c11\u90e8\u5206ANR\u662f\u7531\u4e8eNative FWK\u7684\u963b\u585e\u5f15\u8d77\uff08binder\u6216\u8005jni\u8c03\u7528\uff09\uff0c\u4e5f\u6709\u90e8\u5206ANR\u662f\u7531\u4e8e\u7cfb\u7edf\u8d44\u6e90\u7d27\u5f20\u800c\u5bfc\u81f4\u7684\u3002\u4f5c\u4e3a\u5e94\u7528\u5f00\u53d1\u8005\uff0c\u6211\u4eec\u5e94\u5f53\u9075\u5faa\u4e00\u5b9a\u7684\u51c6\u5219\u4ece\u800c\u5c3d\u53ef\u80fd\u89c4\u907fANR\u7684\u4ea7\u751f\uff1a<\/p>\n\n\n\n
1.\u907f\u514d\u5728\u4e3b\u7ebf\u7a0b\u4e0a\u6267\u884c\u6d89\u53ca \u590d\u6742I\/O \u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n
2.\u907f\u514d\u5728\u4e3b\u7ebf\u7a0b\u4e0a\u8fdb\u884c\u957f\u65f6\u95f4\u7684CPU\u8ba1\u7b97\u3002<\/p>\n\n\n\n
3.\u907f\u514d\u5728\u4e3b\u7ebf\u7a0b\u5728\u5bf9\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u8fdb\u884c\u540c\u6b65 binder \u8c03\u7528\uff0c\u800c\u540e\u8005\u9700\u8981\u5f88\u957f\u65f6\u95f4\u624d\u80fd\u8fd4\u56de\u3002<\/p>\n\n\n\n
4.\u907f\u514d\u4e3b\u7ebf\u7a0b\u56e0\u957f\u65f6\u95f4\u7b49\u5f85\u5176\u4ed6\u7ebf\u7a0b\u72b6\u6001\u540c\u6b65\u800c\u5904\u4e8e\u963b\u585e\u72b6\u6001\u3002<\/p>\n\n\n\n
5.\u907f\u514d\u4e3b\u7ebf\u7a0b\u5728\u8fdb\u7a0b\u4e2d\u6216\u901a\u8fc7 binder \u8c03\u7528\u4e0e\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e4b\u95f4\u53d1\u751f\u6b7b\u9501\u3002<\/p>\n        
\n            
\n                \n                
\n                    \n                        \"Happy\"\n                    <\/a>\n                    
\n                        Happy                    <\/div>\n                    
\n                                                    1<\/span>\n                        \n                                                100<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Sad\"\n                    <\/a>\n                    
\n                        Sad                    <\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Excited\"\n                    <\/a>\n                    
\n                        Excited                    <\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Sleepy\"\n                    <\/a>\n                    
\n                        Sleepy                    <\/div>\n                    
\n                                                    0<\/span>\n                        \n                                                0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Angry\"\n                    <\/a>\n                    
Angry<\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                        \n                    <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Surprise\"\n                    <\/a>\n                    
Surprise<\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n            <\/div>\n        <\/div>","protected":false},"excerpt":{"rendered":"
Android\u7cfb\u7edfANR\u673a\u5236\u5206\u6790\u4e0e\u7b80\u5355\u7684\u65e5\u5fd7\u6392\u67e5<\/p>","protected":false},"author":1,"featured_media":4483,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[18],"tags":[46,340],"class_list":["post-5237","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-operating-system","tag-android","tag-anr"],"blocksy_meta":[],"aioseo_notices":[],"featured_image_urls":{"full":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"thumbnail":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android-150x150.jpg",150,150,true],"medium":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android-300x158.jpg",300,158,true],"medium_large":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"large":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"1536x1536":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"2048x2048":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"trp-custom-language-flag":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android-18x9.jpg",18,9,true]},"post_excerpt_stackable":"
Android\u7cfb\u7edfANR\u673a\u5236\u5206\u6790\u4e0e\u7b80\u5355\u7684\u65e5\u5fd7\u6392\u67e5<\/p>\n","category_list":"\u64cd\u4f5c\u7cfb\u7edf<\/a>","author_info":{"name":"FranzKafka95","url":"https:\/\/blog.coderfan.org\/en\/author\/yushenglonely95"},"comments_num":"0 comments","featured_image_urls_v2":{"full":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"thumbnail":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android-150x150.jpg",150,150,true],"medium":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android-300x158.jpg",300,158,true],"medium_large":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"large":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"1536x1536":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"2048x2048":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android.jpg",512,269,false],"trp-custom-language-flag":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2023\/04\/android-18x9.jpg",18,9,true]},"post_excerpt_stackable_v2":"
Android\u7cfb\u7edfANR\u673a\u5236\u5206\u6790\u4e0e\u7b80\u5355\u7684\u65e5\u5fd7\u6392\u67e5<\/p>\n","category_list_v2":"\u64cd\u4f5c\u7cfb\u7edf<\/a>","author_info_v2":{"name":"FranzKafka95","url":"https:\/\/blog.coderfan.org\/en\/author\/yushenglonely95"},"comments_num_v2":"0 comments","_links":{"self":[{"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/posts\/5237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/comments?post=5237"}],"version-history":[{"count":9,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/posts\/5237\/revisions"}],"predecessor-version":[{"id":5246,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/posts\/5237\/revisions\/5246"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/media\/4483"}],"wp:attachment":[{"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/media?parent=5237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/categories?post=5237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/tags?post=5237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}