Android下rtc驱动调用流程

首先在./frameworks/base/core/java/android/app/目录下找到IAlarmManager.aidl

内容如下：

interfaceIAlarmManager {

    void set(int type, longtriggerAtTime, in PendingIntent operation);

   void setRepeating(int type, long triggerAtTime, long interval, inPendingIntent operation);

    voidsetInexactRepeating(int type, long triggerAtTime, long interval, inPendingIntent operation);

    void setTime(longmillis);

    void setTimeZone(String zone);

   void remove(in PendingIntent operation);

    voidcancelPoweroffAlarm(String name);

    booleanbootFromPoweroffAlarm();

}

 函数的具体实现在./frameworks/base/core/java/android/app/目录下的·AlarmManager.java文件中，

部分内容如下：

publicvoid set(int type, long triggerAtMillis, PendingIntent operation){

        try {

           mService.set(type, triggerAtMillis, operation);

       } catch (RemoteException ex) {

       }

}

mService.set(type,triggerAtMillis,operation);函数实现文件为：frameworks/base/services/java/com/android/server/AlarmManagerService.java

部分内容如下：

 publicvoid set(int type, long triggerAtTime, PendingIntent operation) {

}

 privateclass AlarmThread extends Thread {

。。。。。。

。。。。。。

intresult = waitForAlarm(mDescriptor);

。。。。。。

。。。。。。

}

 privateclass AlarmThread extends Thread {

       public AlarmThread() {

 private class AlarmThread extendsThread {

        publicAlarmThread() {

 private class AlarmThread extends Thread{

        public AlarmThread(){

而waitForAlarn的实现文件为：frameworks/base/services/jni/com_android_server_AlarmManagerService.cpp

部分内容为：

staticJNINativeMethod sMethods[] = {

       {"init", "()I",(void*)android_server_AlarmManagerService_init},

       {"close", "(I)V",(void*)android_server_AlarmManagerService_close},

       {"set", "(IIJJ)V",(void*)android_server_AlarmManagerService_set},

   {"waitForAlarm", "(I)I",(void*)android_server_AlarmManagerService_waitForAlarm},

   {"setKernelTimezone", "(II)I",(void*)android_server_AlarmManagerService_setKernelTimezone},

   {"bootFromAlarm", "(I)Z",(void*)android_server_AlarmManagerService_bootFromAlarm},

};

也就在这个文件中直接对linux的rtc驱动接口进行了直接操作，再往下就进入linux驱动程序。