<6>[245187.856061] (0)[183:hang_detect][Hang_Detect] hang_detect thread counts down 0:14, status 1.
<6>[245187.856061] (0)[183:hang_detect][Hang_Detect] hang_detect thread counts down 0:14, status 1.
<6>[245187.856061] (0)[183:hang_detect][Hang_Detect] hang_detect thread counts down 0:14, status 1.
<6>[245218.679365] (0)[183:hang_detect][Hang_Detect] hang_detect thread counts down -1:14, status 1.
<6>[245218.679365] (0)[183:hang_detect][Hang_Detect] hang_detect thread counts down -1:14, status 1.
<6>[245218.679365] (0)[183:hang_detect][Hang_Detect] hang_detect thread counts down -1:14, status 1.
counts down 0:14, status 1.
14 表示计数 ,system_server 重启，12表示发生anr,10表示正常
0表示计数到了 0，一个计数30s
计数到-1 时发生watchdog