安卓源码中在libcore，以及frameworks ， external目录下添加了一些log信息
编译后的system.img镜像， 模拟器运行不起来
log不断打印如下信息：
D/AndroidRuntime( 855): >>>>>> AndroidRuntime START com.android.internal.os.ZygoteInit <<<<<<
D/AndroidRuntime( 855): CheckJNI is ON
I/SamplingProfilerIntegration( 855): Profiling disabled.
I/dalvikvm( 855): threadid=1: stack overflow on call to Ljava/util/GregorianCalendar;.fullFieldsCalc:VJII
I/dalvikvm( 855): method requires 100+20+28=148 bytes, fp is 0x4615f380 (128 left)
I/dalvikvm( 855): expanding stack end (0x4615f300 to 0x4615f000)
I/dalvikvm( 855): Shrank stack (to 0x4615f300, curFrame is 0x4615f670)
D/AndroidRuntime( 855): Shutting down VM
W/dalvikvm( 855): threadid=1: thread exiting with uncaught exception (group=0x409961f8)
I/ServiceManager( 30): service 'media.audio_flinger' died
I/ServiceManager( 30): service 'media.player' died
I/ServiceManager( 30): service 'media.camera' died
I/ServiceManager( 30): service 'media.audio_policy' died
I/Netd ( 860): Netd 1.0 starting
E/Netd ( 860): Unable to bind netlink socket: No such file or directory
E/Netd ( 860): Unable to open quota2 logging socket
I/ ( 859): ServiceManager: 0xf958
I/AudioFlinger( 859): Loaded primary audio interface from LEGACY Audio HW HAL (audio)
I/AudioFlinger( 859): Using 'LEGACY Audio HW HAL' (audio.primary) as the primary audio interface
D/AudioHardwareInterface( 859): setMode(NORMAL)
I/CameraService( 859): CameraService started (pid=859)
D/EmulatedCamera_QemuClient( 859): Emulated camera list:
D/EmulatedCamera_FakeCamera( 859): Initialize: Fake camera is facing back
V/EmulatedCamera_Factory( 859): 1 cameras are being emulated. Fake camera ID is 0
I/AudioFlinger( 859): AudioFlinger's thread 0x10f50 ready to run
W/AudioFlinger( 859): Thread AudioOut_1 cannot connect to the power manager service
I/AudioPolicyService( 859): Loaded audio policy from LEGACY Audio Policy HAL (audio_policy)
