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Android中ANR的分析和解决( 五 )

Android

六、ANR分析流程总结总结一下上面我们分析ANR的主体流程：
1、首先我们搜索am_anr ， 找到出现ANR的时间点、进程PID、ANR类型、然后再找搜索PID ， 找前5秒左右的日志 。
2、过滤ANR IN 查看CPU信息
3、接着查看traces.txt ， 找到java的堆栈信息定位代码位置 ， 最后查看源码 ， 分析与解决问题 。
到这里 ， 通过上面三个步骤我们基本就能定位出来大部分ANR的来龙去脉了 。
我在接下来的第六步和第七步还继续提供了多个ANR案例供大家参考分析 ， 有兴趣的可以看着 。
七、ANR 案例整理1、主线程被其他线程lock ， 导致死锁

waiting on <0x1cd570> (a android.os.MessageQueue)
DALVIK THREADS:"main" prio=5 tid=3 TIMED_WAIT| group="main" sCount=1 dsCount=0 s=0 obj=0x400143a8| sysTid=691 nice=0 sched=0/0 handle=-1091117924at java.lang.Object.wait(Native Method)- waiting on <0x1cd570> (a android.os.MessageQueue)at java.lang.Object.wait(Object.java:195)at android.os.MessageQueue.next(MessageQueue.java:144)at android.os.Looper.loop(Looper.java:110)at android.app.ActivityThread.main(ActivityThread.java:3742)at java.lang.reflect.Method.invokeNative(Native Method)at java.lang.reflect.Method.invoke(Method.java:515)at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:497)at dalvik.system.NativeStart.main(Native Method)"Binder Thread #3" prio=5 tid=15 NATIVE| group="main" sCount=1 dsCount=0 s=0 obj=0x434e7758| sysTid=734 nice=0 sched=0/0 handle=1733632at dalvik.system.NativeStart.run(Native Method)"Binder Thread #2" prio=5 tid=13 NATIVE| group="main" sCount=1 dsCount=0 s=0 obj=0x1cd570| sysTid=696 nice=0 sched=0/0 handle=1369840at dalvik.system.NativeStart.run(Native Method)"Binder Thread #1" prio=5 tid=11 NATIVE| group="main" sCount=1 dsCount=0 s=0 obj=0x433aca10| sysTid=695 nice=0 sched=0/0 handle=1367448at dalvik.system.NativeStart.run(Native Method)----- end 691 -----2、主线程做耗时的操作：比如数据库读写 。
"main" prio=5 tid=1 Nativeheld mutexes=kernel: (couldn't read /proc/self/task/11003/stack)native: #00 pc 000492a4 /system/lib/libc.so (nanosleep+12)native: #01 pc 0002dc21 /system/lib/libc.so (usleep+52)native: #02 pc 00009cab /system/lib/libsqlite.so (???)native: #03 pc 00011119 /system/lib/libsqlite.so (???)native: #04 pc 00016455 /system/lib/libsqlite.so (???)native: #16 pc 0000fa29 /system/lib/libsqlite.so (???)native: #17 pc 0000fad7 /system/lib/libsqlite.so (sqlite3_prepare16_v2+14)native: #18 pc 0007f671 /system/lib/libandroid_runtime.so (???)native: #19 pc 002b4721 /system/framework/arm/boot-framework.oat (Java_android_database_sqlite_SQLiteConnection_nativePrepareStatement__JLjava_lang_String_2+116)at android.database.sqlite.SQLiteConnection.setWalModeFromConfiguration(SQLiteConnection.java:294)at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:215)at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:193)at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:808)locked <0x0db193bf> (a java.lang.Object)at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:793)at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:696)at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:690)at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:299)at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:223)at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163)locked <0x045a4a8c> (a com.xxxx.video.common.data.DataBaseHelper)at com.xxxx.video.common.data.DataBaseoRM.<init>(DataBaseORM.java:46)at com.xxxx.video.common.data.DataBaseORM.getInstance(DataBaseORM.java:53)locked <0x017095d5> (a java.lang.Class<com.xxxx.video.common.data.DataBaseORM>)3、binder数据量过大
07-21 04:43:21.57310001488 12756 E Binder: Unreasonably large binder reply buffer: on android.content.pm.BaseParceledListSlice$1@770c74f calling 1 size 388568 (data: 1, 32, 7274595)07-21 04:43:21.57310001488 12756 E Binder: android.util.Log$TerribleFailure: Unreasonably large binder reply buffer: on android.content.pm.BaseParceledListSlice$1@770c74f calling 1 size 388568 (data: 1, 32, 7274595)07-21 04:43:21.607100014882951 E Binder: Unreasonably large binder reply buffer: on android.content.pm.BaseParceledListSlice$1@770c74f calling 1 size 211848 (data: 1, 23, 7274595)07-21 04:43:21.607100014882951 E Binder: android.util.Log$TerribleFailure: Unreasonably large binder reply buffer: on android.content.pm.BaseParceledListSlice$1@770c74f calling 1 size 211848 (data: 1, 23, 7274595)07-21 04:43:21.662100014886258 E Binder: Unreasonably large binder reply buffer: on android.content.pm.BaseParceledListSlice$1@770c74f calling 1 size 259300 (data: 1, 33, 7274595)


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