Added alarm comments

app/src/main/java/eu/faircode/email/Core.java

@@ -1711,7 +1711,7 @@ class Core {
                     context, ServiceUI.PI_EXISTS, intent, PendingIntent.FLAG_UPDATE_CURRENT);
 
             AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
-            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, next, piExists);
+            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, next, piExists); // inexact
             return;
         }
 

app/src/main/java/eu/faircode/email/EntityMessage.java

@@ -463,7 +463,7 @@ public class EntityMessage implements Serializable {
             am.cancel(pi);
         } else {
             Log.i("Set snooze id=" + id + " wakeup=" + new Date(wakeup));
-            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, wakeup, pi);
+            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, wakeup, pi); // indirect exact
         }
     }
 

app/src/main/java/eu/faircode/email/ServiceSend.java

@@ -769,7 +769,7 @@ public class ServiceSend extends ServiceBase implements SharedPreferences.OnShar
         long trigger = System.currentTimeMillis() + delay;
         AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
         am.cancel(pi);
-        AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, trigger, pi);
+        AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, trigger, pi); // exact
     }
 
     static void watchdog(Context context) {

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -1793,7 +1793,7 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
                             long trigger = System.currentTimeMillis() + duration;
                             EntityLog.log(this, "### " + account.name + " keep alive" +
                                     " wait=" + account.poll_interval + " until=" + new Date(trigger));
-                            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, trigger, pi);
+                            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, trigger, pi); // inexact
 
                             try {
                                 wlAccount.release();
@@ -2001,7 +2001,7 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
                         try {
                             long trigger = System.currentTimeMillis() + backoff * 1000L;
                             EntityLog.log(this, "### " + account.name + " backoff until=" + new Date(trigger));
-                            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, trigger, pi);
+                            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, trigger, pi); // inexact
 
                             try {
                                 db.account().setAccountBackoff(account.id, trigger);
@@ -2344,7 +2344,7 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
             Log.i("Schedule next=" + new Date(next));
             Log.i("Schedule poll=" + poll);
 
-            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, next, pi);
+            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, next, pi); // exact
 
             if (sync & poll) {
                 at = now + 30 * 1000L;
@@ -2377,10 +2377,10 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
 
                 EntityLog.log(context, "Poll next=" + new Date(next));
 
-                AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, next, piSync);
+                AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, next, piSync); // exact
             }
         } else
-            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, at, piSync);
+            AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, at, piSync); // exact
     }
 
     static long[] getSchedule(Context context) {