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[] = {
/* name,signature, funcPtr */
{"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。相关阅读：时钟RTC驱动分析 http://www.linuxidc.com/Linux/2013-06/86043.htmS3C2440上RTC时钟驱动开发实例分析 http://www.linuxidc.com/Linux/2013-06/86042.htm实时时钟RTC之hwclock简介 http://www.linuxidc.com/Linux/2012-09/69915.htmS3C6410实时时钟RTC 秒字符设备 http://www.linuxidc.com/Linux/2012-09/69906.htmLinux驱动分析之RTC详解 http://www.linuxidc.com/Linux/2012-08/67808.htm