Android Power Management

Native lib:

system/core/libsuspend/

hardware/libhardware/modules/power/

system/core/libcutils/android_reboot.c

linux提供了三种接口供android suspend来选择，分别是autosleep、earlysuspend、wakeup_count。其中前两个是google 在kernel中添加的功能，后一个是linux kernel本身拥有的功能。

JNI:

frameworks/base/services/jni/com_android_server_power_PowerManagerService.cpp

Framework:

frameworks/base/services/java/com/android/server/power/

API:

  frameworks/base/core/java/android/os/PowerManager.java