1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
|
/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server;
import android.app.Activity;
import android.app.ActivityManagerNative;
import android.app.AlarmManager;
import android.app.IAlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Binder;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.PowerManager;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.os.WorkSource;
import android.text.TextUtils;
import android.util.Pair;
import android.util.Slog;
import android.util.TimeUtils;
import java.io.ByteArrayOutputStream;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;
import java.util.TimeZone;
import static android.app.AlarmManager.RTC_WAKEUP;
import static android.app.AlarmManager.RTC;
import static android.app.AlarmManager.ELAPSED_REALTIME_WAKEUP;
import static android.app.AlarmManager.ELAPSED_REALTIME;
import com.android.internal.util.LocalLog;
class AlarmManagerService extends IAlarmManager.Stub {
// The threshold for how long an alarm can be late before we print a
// warning message. The time duration is in milliseconds.
private static final long LATE_ALARM_THRESHOLD = 10 * 1000;
private static final int RTC_WAKEUP_MASK = 1 << RTC_WAKEUP;
private static final int RTC_MASK = 1 << RTC;
private static final int ELAPSED_REALTIME_WAKEUP_MASK = 1 << ELAPSED_REALTIME_WAKEUP;
private static final int ELAPSED_REALTIME_MASK = 1 << ELAPSED_REALTIME;
private static final int TIME_CHANGED_MASK = 1 << 16;
private static final int IS_WAKEUP_MASK = RTC_WAKEUP_MASK|ELAPSED_REALTIME_WAKEUP_MASK;
// Mask for testing whether a given alarm type is wakeup vs non-wakeup
private static final int TYPE_NONWAKEUP_MASK = 0x1; // low bit => non-wakeup
private static final String TAG = "AlarmManager";
private static final String ClockReceiver_TAG = "ClockReceiver";
private static final boolean localLOGV = false;
private static final boolean DEBUG_BATCH = localLOGV || false;
private static final boolean DEBUG_VALIDATE = localLOGV || false;
private static final int ALARM_EVENT = 1;
private static final String TIMEZONE_PROPERTY = "persist.sys.timezone";
private static final Intent mBackgroundIntent
= new Intent().addFlags(Intent.FLAG_FROM_BACKGROUND);
private static final IncreasingTimeOrder sIncreasingTimeOrder = new IncreasingTimeOrder();
private static final boolean WAKEUP_STATS = true;
private final Context mContext;
private final LocalLog mLog = new LocalLog(TAG);
private Object mLock = new Object();
private int mDescriptor;
private long mNextWakeup;
private long mNextNonWakeup;
private int mBroadcastRefCount = 0;
private PowerManager.WakeLock mWakeLock;
private ArrayList<InFlight> mInFlight = new ArrayList<InFlight>();
private final AlarmThread mWaitThread = new AlarmThread();
private final AlarmHandler mHandler = new AlarmHandler();
private ClockReceiver mClockReceiver;
private UninstallReceiver mUninstallReceiver;
private final ResultReceiver mResultReceiver = new ResultReceiver();
private final PendingIntent mTimeTickSender;
private final PendingIntent mDateChangeSender;
class WakeupEvent {
public long when;
public int uid;
public String action;
public WakeupEvent(long theTime, int theUid, String theAction) {
when = theTime;
uid = theUid;
action = theAction;
}
}
private final LinkedList<WakeupEvent> mRecentWakeups = new LinkedList<WakeupEvent>();
private final long RECENT_WAKEUP_PERIOD = 1000L * 60 * 60 * 24; // one day
static final class Batch {
long start; // These endpoints are always in ELAPSED
long end;
boolean standalone; // certain "batches" don't participate in coalescing
final ArrayList<Alarm> alarms = new ArrayList<Alarm>();
Batch() {
start = 0;
end = Long.MAX_VALUE;
}
Batch(Alarm seed) {
start = seed.whenElapsed;
end = seed.maxWhen;
alarms.add(seed);
}
int size() {
return alarms.size();
}
Alarm get(int index) {
return alarms.get(index);
}
boolean canHold(long whenElapsed, long maxWhen) {
return (end >= whenElapsed) && (start <= maxWhen);
}
boolean add(Alarm alarm) {
boolean newStart = false;
// narrows the batch if necessary; presumes that canHold(alarm) is true
int index = Collections.binarySearch(alarms, alarm, sIncreasingTimeOrder);
if (index < 0) {
index = 0 - index - 1;
}
alarms.add(index, alarm);
if (DEBUG_BATCH) {
Slog.v(TAG, "Adding " + alarm + " to " + this);
}
if (alarm.whenElapsed > start) {
start = alarm.whenElapsed;
newStart = true;
}
if (alarm.maxWhen < end) {
end = alarm.maxWhen;
}
if (DEBUG_BATCH) {
Slog.v(TAG, " => now " + this);
}
return newStart;
}
boolean remove(final PendingIntent operation) {
boolean didRemove = false;
long newStart = 0; // recalculate endpoints as we go
long newEnd = Long.MAX_VALUE;
for (int i = 0; i < alarms.size(); i++) {
Alarm alarm = alarms.get(i);
if (alarm.operation.equals(operation)) {
alarms.remove(i);
didRemove = true;
} else {
if (alarm.whenElapsed > newStart) {
newStart = alarm.whenElapsed;
}
if (alarm.maxWhen < newEnd) {
newEnd = alarm.maxWhen;
}
i++;
}
}
if (didRemove) {
// commit the new batch bounds
start = newStart;
end = newEnd;
}
return didRemove;
}
boolean remove(final String packageName) {
boolean didRemove = false;
long newStart = 0; // recalculate endpoints as we go
long newEnd = Long.MAX_VALUE;
for (int i = 0; i < alarms.size(); i++) {
Alarm alarm = alarms.get(i);
if (alarm.operation.getTargetPackage().equals(packageName)) {
alarms.remove(i);
didRemove = true;
} else {
if (alarm.whenElapsed > newStart) {
newStart = alarm.whenElapsed;
}
if (alarm.maxWhen < newEnd) {
newEnd = alarm.maxWhen;
}
i++;
}
}
if (didRemove) {
// commit the new batch bounds
start = newStart;
end = newEnd;
}
return didRemove;
}
boolean remove(final int userHandle) {
boolean didRemove = false;
long newStart = 0; // recalculate endpoints as we go
long newEnd = Long.MAX_VALUE;
for (int i = 0; i < alarms.size(); i++) {
Alarm alarm = alarms.get(i);
if (UserHandle.getUserId(alarm.operation.getCreatorUid()) == userHandle) {
alarms.remove(i);
didRemove = true;
} else {
if (alarm.whenElapsed > newStart) {
newStart = alarm.whenElapsed;
}
if (alarm.maxWhen < newEnd) {
newEnd = alarm.maxWhen;
}
i++;
}
}
if (didRemove) {
// commit the new batch bounds
start = newStart;
end = newEnd;
}
return didRemove;
}
boolean hasPackage(final String packageName) {
final int N = alarms.size();
for (int i = 0; i < N; i++) {
Alarm a = alarms.get(i);
if (a.operation.getTargetPackage().equals(packageName)) {
return true;
}
}
return false;
}
boolean hasWakeups() {
final int N = alarms.size();
for (int i = 0; i < N; i++) {
Alarm a = alarms.get(i);
// non-wakeup alarms are types 1 and 3, i.e. have the low bit set
if ((a.type & TYPE_NONWAKEUP_MASK) == 0) {
return true;
}
}
return false;
}
@Override
public String toString() {
StringBuilder b = new StringBuilder(40);
b.append("Batch{"); b.append(Integer.toHexString(this.hashCode()));
b.append(" num="); b.append(size());
b.append(" start="); b.append(start);
b.append(" end="); b.append(end);
if (standalone) {
b.append(" STANDALONE");
}
b.append('}');
return b.toString();
}
}
static class BatchTimeOrder implements Comparator<Batch> {
public int compare(Batch b1, Batch b2) {
long when1 = b1.start;
long when2 = b2.start;
if (when1 - when2 > 0) {
return 1;
}
if (when1 - when2 < 0) {
return -1;
}
return 0;
}
}
// minimum recurrence period or alarm futurity for us to be able to fuzz it
private static final long MIN_FUZZABLE_INTERVAL = 10000;
private static final BatchTimeOrder sBatchOrder = new BatchTimeOrder();
private final ArrayList<Batch> mAlarmBatches = new ArrayList<Batch>();
static long convertToElapsed(long when, int type) {
final boolean isRtc = (type == RTC || type == RTC_WAKEUP);
if (isRtc) {
when -= System.currentTimeMillis() - SystemClock.elapsedRealtime();
}
return when;
}
// Apply a heuristic to { recurrence interval, futurity of the trigger time } to
// calculate the end of our nominal delivery window for the alarm.
static long maxTriggerTime(long now, long triggerAtTime, long interval) {
// Current heuristic: batchable window is 75% of either the recurrence interval
// [for a periodic alarm] or of the time from now to the desired delivery time,
// with a minimum delay/interval of 10 seconds, under which we will simply not
// defer the alarm.
long futurity = (interval == 0)
? (triggerAtTime - now)
: interval;
if (futurity < MIN_FUZZABLE_INTERVAL) {
futurity = 0;
}
return triggerAtTime + (long)(.75 * futurity);
}
// returns true if the batch was added at the head
static boolean addBatchLocked(ArrayList<Batch> list, Batch newBatch) {
int index = Collections.binarySearch(list, newBatch, sBatchOrder);
if (index < 0) {
index = 0 - index - 1;
}
list.add(index, newBatch);
return (index == 0);
}
// Return the index of the matching batch, or -1 if none found.
int attemptCoalesceLocked(long whenElapsed, long maxWhen) {
final int N = mAlarmBatches.size();
for (int i = 0; i < N; i++) {
Batch b = mAlarmBatches.get(i);
if (!b.standalone && b.canHold(whenElapsed, maxWhen)) {
return i;
}
}
return -1;
}
// The RTC clock has moved arbitrarily, so we need to recalculate all the batching
void rebatchAllAlarms() {
synchronized (mLock) {
rebatchAllAlarmsLocked(true);
}
}
void rebatchAllAlarmsLocked(boolean doValidate) {
ArrayList<Batch> oldSet = (ArrayList<Batch>) mAlarmBatches.clone();
mAlarmBatches.clear();
final long nowElapsed = SystemClock.elapsedRealtime();
final int oldBatches = oldSet.size();
for (int batchNum = 0; batchNum < oldBatches; batchNum++) {
Batch batch = oldSet.get(batchNum);
final int N = batch.size();
for (int i = 0; i < N; i++) {
Alarm a = batch.get(i);
long whenElapsed = convertToElapsed(a.when, a.type);
long maxElapsed = (a.whenElapsed == a.maxWhen)
? whenElapsed
: maxTriggerTime(nowElapsed, whenElapsed, a.repeatInterval);
setImplLocked(a.type, a.when, whenElapsed, maxElapsed,
a.repeatInterval, a.operation, batch.standalone, doValidate, a.workSource);
}
}
}
private static final class InFlight extends Intent {
final PendingIntent mPendingIntent;
final WorkSource mWorkSource;
final Pair<String, ComponentName> mTarget;
final BroadcastStats mBroadcastStats;
final FilterStats mFilterStats;
InFlight(AlarmManagerService service, PendingIntent pendingIntent, WorkSource workSource) {
mPendingIntent = pendingIntent;
mWorkSource = workSource;
Intent intent = pendingIntent.getIntent();
mTarget = intent != null
? new Pair<String, ComponentName>(intent.getAction(), intent.getComponent())
: null;
mBroadcastStats = service.getStatsLocked(pendingIntent);
FilterStats fs = mBroadcastStats.filterStats.get(mTarget);
if (fs == null) {
fs = new FilterStats(mBroadcastStats, mTarget);
mBroadcastStats.filterStats.put(mTarget, fs);
}
mFilterStats = fs;
}
}
private static final class FilterStats {
final BroadcastStats mBroadcastStats;
final Pair<String, ComponentName> mTarget;
long aggregateTime;
int count;
int numWakeup;
long startTime;
int nesting;
FilterStats(BroadcastStats broadcastStats, Pair<String, ComponentName> target) {
mBroadcastStats = broadcastStats;
mTarget = target;
}
}
private static final class BroadcastStats {
final String mPackageName;
long aggregateTime;
int count;
int numWakeup;
long startTime;
int nesting;
final HashMap<Pair<String, ComponentName>, FilterStats> filterStats
= new HashMap<Pair<String, ComponentName>, FilterStats>();
BroadcastStats(String packageName) {
mPackageName = packageName;
}
}
private final HashMap<String, BroadcastStats> mBroadcastStats
= new HashMap<String, BroadcastStats>();
public AlarmManagerService(Context context) {
mContext = context;
mDescriptor = init();
mNextWakeup = mNextNonWakeup = 0;
// We have to set current TimeZone info to kernel
// because kernel doesn't keep this after reboot
String tz = SystemProperties.get(TIMEZONE_PROPERTY);
if (tz != null) {
setTimeZone(tz);
}
PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
mTimeTickSender = PendingIntent.getBroadcastAsUser(context, 0,
new Intent(Intent.ACTION_TIME_TICK).addFlags(
Intent.FLAG_RECEIVER_REGISTERED_ONLY), 0,
UserHandle.ALL);
Intent intent = new Intent(Intent.ACTION_DATE_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
mDateChangeSender = PendingIntent.getBroadcastAsUser(context, 0, intent,
Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT, UserHandle.ALL);
// now that we have initied the driver schedule the alarm
mClockReceiver= new ClockReceiver();
mClockReceiver.scheduleTimeTickEvent();
mClockReceiver.scheduleDateChangedEvent();
mUninstallReceiver = new UninstallReceiver();
if (mDescriptor != -1) {
mWaitThread.start();
} else {
Slog.w(TAG, "Failed to open alarm driver. Falling back to a handler.");
}
}
protected void finalize() throws Throwable {
try {
close(mDescriptor);
} finally {
super.finalize();
}
}
@Override
public void set(int type, long triggerAtTime, long windowLength, long interval,
PendingIntent operation, WorkSource workSource) {
if (workSource != null) {
mContext.enforceCallingPermission(
android.Manifest.permission.UPDATE_DEVICE_STATS,
"AlarmManager.set");
}
set(type, triggerAtTime, windowLength, interval, operation, false, workSource);
}
public void set(int type, long triggerAtTime, long windowLength, long interval,
PendingIntent operation, boolean isStandalone, WorkSource workSource) {
if (operation == null) {
Slog.w(TAG, "set/setRepeating ignored because there is no intent");
return;
}
// Sanity check the window length. This will catch people mistakenly
// trying to pass an end-of-window timestamp rather than a duration.
if (windowLength > AlarmManager.INTERVAL_HALF_DAY) {
Slog.w(TAG, "Window length " + windowLength
+ "ms suspiciously long; limiting to 1 hour");
windowLength = AlarmManager.INTERVAL_HOUR;
}
if (type < RTC_WAKEUP || type > ELAPSED_REALTIME) {
throw new IllegalArgumentException("Invalid alarm type " + type);
}
if (triggerAtTime < 0) {
final long who = Binder.getCallingUid();
final long what = Binder.getCallingPid();
Slog.w(TAG, "Invalid alarm trigger time! " + triggerAtTime + " from uid=" + who
+ " pid=" + what);
triggerAtTime = 0;
}
final long nowElapsed = SystemClock.elapsedRealtime();
final long triggerElapsed = convertToElapsed(triggerAtTime, type);
final long maxElapsed;
if (windowLength == AlarmManager.WINDOW_EXACT) {
maxElapsed = triggerElapsed;
} else if (windowLength < 0) {
maxElapsed = maxTriggerTime(nowElapsed, triggerElapsed, interval);
} else {
maxElapsed = triggerElapsed + windowLength;
}
synchronized (mLock) {
if (DEBUG_BATCH) {
Slog.v(TAG, "set(" + operation + ") : type=" + type
+ " triggerAtTime=" + triggerAtTime + " win=" + windowLength
+ " tElapsed=" + triggerElapsed + " maxElapsed=" + maxElapsed
+ " interval=" + interval + " standalone=" + isStandalone);
}
setImplLocked(type, triggerAtTime, triggerElapsed, maxElapsed,
interval, operation, isStandalone, true, workSource);
}
}
private void setImplLocked(int type, long when, long whenElapsed, long maxWhen, long interval,
PendingIntent operation, boolean isStandalone, boolean doValidate,
WorkSource workSource) {
Alarm a = new Alarm(type, when, whenElapsed, maxWhen, interval, operation, workSource);
removeLocked(operation);
boolean reschedule;
int whichBatch = (isStandalone) ? -1 : attemptCoalesceLocked(whenElapsed, maxWhen);
if (whichBatch < 0) {
Batch batch = new Batch(a);
batch.standalone = isStandalone;
reschedule = addBatchLocked(mAlarmBatches, batch);
} else {
Batch batch = mAlarmBatches.get(whichBatch);
reschedule = batch.add(a);
if (reschedule) {
// The start time of this batch advanced, so batch ordering may
// have just been broken. Move it to where it now belongs.
mAlarmBatches.remove(whichBatch);
addBatchLocked(mAlarmBatches, batch);
}
}
if (DEBUG_VALIDATE) {
if (doValidate && !validateConsistencyLocked()) {
Slog.v(TAG, "Tipping-point operation: type=" + type + " when=" + when
+ " when(hex)=" + Long.toHexString(when)
+ " whenElapsed=" + whenElapsed + " maxWhen=" + maxWhen
+ " interval=" + interval + " op=" + operation
+ " standalone=" + isStandalone);
rebatchAllAlarmsLocked(false);
reschedule = true;
}
}
if (reschedule) {
rescheduleKernelAlarmsLocked();
}
}
private void logBatchesLocked() {
ByteArrayOutputStream bs = new ByteArrayOutputStream(2048);
PrintWriter pw = new PrintWriter(bs);
final long nowRTC = System.currentTimeMillis();
final long nowELAPSED = SystemClock.elapsedRealtime();
final int NZ = mAlarmBatches.size();
for (int iz = 0; iz < NZ; iz++) {
Batch bz = mAlarmBatches.get(iz);
pw.append("Batch "); pw.print(iz); pw.append(": "); pw.println(bz);
dumpAlarmList(pw, bz.alarms, " ", nowELAPSED, nowRTC);
pw.flush();
Slog.v(TAG, bs.toString());
bs.reset();
}
}
private boolean validateConsistencyLocked() {
if (DEBUG_VALIDATE) {
long lastTime = Long.MIN_VALUE;
final int N = mAlarmBatches.size();
for (int i = 0; i < N; i++) {
Batch b = mAlarmBatches.get(i);
if (b.start >= lastTime) {
// duplicate start times are okay because of standalone batches
lastTime = b.start;
} else {
Slog.e(TAG, "CONSISTENCY FAILURE: Batch " + i + " is out of order");
logBatchesLocked();
return false;
}
}
}
return true;
}
private Batch findFirstWakeupBatchLocked() {
final int N = mAlarmBatches.size();
for (int i = 0; i < N; i++) {
Batch b = mAlarmBatches.get(i);
if (b.hasWakeups()) {
return b;
}
}
return null;
}
private void rescheduleKernelAlarmsLocked() {
// Schedule the next upcoming wakeup alarm. If there is a deliverable batch
// prior to that which contains no wakeups, we schedule that as well.
if (mAlarmBatches.size() > 0) {
final Batch firstWakeup = findFirstWakeupBatchLocked();
final Batch firstBatch = mAlarmBatches.get(0);
if (firstWakeup != null && mNextWakeup != firstWakeup.start) {
mNextWakeup = firstWakeup.start;
setLocked(ELAPSED_REALTIME_WAKEUP, firstWakeup.start);
}
if (firstBatch != firstWakeup && mNextNonWakeup != firstBatch.start) {
mNextNonWakeup = firstBatch.start;
setLocked(ELAPSED_REALTIME, firstBatch.start);
}
}
}
public void setTime(long millis) {
mContext.enforceCallingOrSelfPermission(
"android.permission.SET_TIME",
"setTime");
SystemClock.setCurrentTimeMillis(millis);
}
public void setTimeZone(String tz) {
mContext.enforceCallingOrSelfPermission(
"android.permission.SET_TIME_ZONE",
"setTimeZone");
long oldId = Binder.clearCallingIdentity();
try {
if (TextUtils.isEmpty(tz)) return;
TimeZone zone = TimeZone.getTimeZone(tz);
// Prevent reentrant calls from stepping on each other when writing
// the time zone property
boolean timeZoneWasChanged = false;
synchronized (this) {
String current = SystemProperties.get(TIMEZONE_PROPERTY);
if (current == null || !current.equals(zone.getID())) {
if (localLOGV) {
Slog.v(TAG, "timezone changed: " + current + ", new=" + zone.getID());
}
timeZoneWasChanged = true;
SystemProperties.set(TIMEZONE_PROPERTY, zone.getID());
}
// Update the kernel timezone information
// Kernel tracks time offsets as 'minutes west of GMT'
int gmtOffset = zone.getOffset(System.currentTimeMillis());
setKernelTimezone(mDescriptor, -(gmtOffset / 60000));
}
TimeZone.setDefault(null);
if (timeZoneWasChanged) {
Intent intent = new Intent(Intent.ACTION_TIMEZONE_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
intent.putExtra("time-zone", zone.getID());
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
}
} finally {
Binder.restoreCallingIdentity(oldId);
}
}
public void remove(PendingIntent operation) {
if (operation == null) {
return;
}
synchronized (mLock) {
removeLocked(operation);
}
}
public void removeLocked(PendingIntent operation) {
boolean didRemove = false;
for (int i = mAlarmBatches.size() - 1; i >= 0; i--) {
Batch b = mAlarmBatches.get(i);
didRemove |= b.remove(operation);
if (b.size() == 0) {
mAlarmBatches.remove(i);
}
}
if (didRemove) {
if (DEBUG_BATCH) {
Slog.v(TAG, "remove(operation) changed bounds; rebatching");
}
rebatchAllAlarmsLocked(true);
rescheduleKernelAlarmsLocked();
}
}
public void removeLocked(String packageName) {
boolean didRemove = false;
for (int i = mAlarmBatches.size() - 1; i >= 0; i--) {
Batch b = mAlarmBatches.get(i);
didRemove |= b.remove(packageName);
if (b.size() == 0) {
mAlarmBatches.remove(i);
}
}
if (didRemove) {
if (DEBUG_BATCH) {
Slog.v(TAG, "remove(package) changed bounds; rebatching");
}
rebatchAllAlarmsLocked(true);
rescheduleKernelAlarmsLocked();
}
}
public void removeUserLocked(int userHandle) {
boolean didRemove = false;
for (int i = mAlarmBatches.size() - 1; i >= 0; i--) {
Batch b = mAlarmBatches.get(i);
didRemove |= b.remove(userHandle);
if (b.size() == 0) {
mAlarmBatches.remove(i);
}
}
if (didRemove) {
if (DEBUG_BATCH) {
Slog.v(TAG, "remove(user) changed bounds; rebatching");
}
rebatchAllAlarmsLocked(true);
rescheduleKernelAlarmsLocked();
}
}
public boolean lookForPackageLocked(String packageName) {
for (int i = 0; i < mAlarmBatches.size(); i++) {
Batch b = mAlarmBatches.get(i);
if (b.hasPackage(packageName)) {
return true;
}
}
return false;
}
private void setLocked(int type, long when)
{
if (mDescriptor != -1)
{
// The kernel never triggers alarms with negative wakeup times
// so we ensure they are positive.
long alarmSeconds, alarmNanoseconds;
if (when < 0) {
alarmSeconds = 0;
alarmNanoseconds = 0;
} else {
alarmSeconds = when / 1000;
alarmNanoseconds = (when % 1000) * 1000 * 1000;
}
set(mDescriptor, type, alarmSeconds, alarmNanoseconds);
}
else
{
Message msg = Message.obtain();
msg.what = ALARM_EVENT;
mHandler.removeMessages(ALARM_EVENT);
mHandler.sendMessageAtTime(msg, when);
}
}
@Override
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
!= PackageManager.PERMISSION_GRANTED) {
pw.println("Permission Denial: can't dump AlarmManager from from pid="
+ Binder.getCallingPid()
+ ", uid=" + Binder.getCallingUid());
return;
}
synchronized (mLock) {
pw.println("Current Alarm Manager state:");
final long nowRTC = System.currentTimeMillis();
final long nowELAPSED = SystemClock.elapsedRealtime();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
pw.print("nowRTC="); pw.print(nowRTC);
pw.print("="); pw.print(sdf.format(new Date(nowRTC)));
pw.print(" nowELAPSED="); pw.println(nowELAPSED);
long nextWakeupRTC = mNextWakeup + (nowRTC - nowELAPSED);
long nextNonWakeupRTC = mNextNonWakeup + (nowRTC - nowELAPSED);
pw.print("Next alarm: "); pw.print(mNextNonWakeup);
pw.print(" = "); pw.println(sdf.format(new Date(nextNonWakeupRTC)));
pw.print("Next wakeup: "); pw.print(mNextWakeup);
pw.print(" = "); pw.println(sdf.format(new Date(nextWakeupRTC)));
if (mAlarmBatches.size() > 0) {
pw.println();
pw.print("Pending alarm batches: ");
pw.println(mAlarmBatches.size());
for (Batch b : mAlarmBatches) {
pw.print(b); pw.println(':');
dumpAlarmList(pw, b.alarms, " ", nowELAPSED, nowRTC);
}
}
pw.println();
pw.print(" Broadcast ref count: "); pw.println(mBroadcastRefCount);
pw.println();
if (mLog.dump(pw, " Recent problems", " ")) {
pw.println();
}
final FilterStats[] topFilters = new FilterStats[10];
final Comparator<FilterStats> comparator = new Comparator<FilterStats>() {
@Override
public int compare(FilterStats lhs, FilterStats rhs) {
if (lhs.aggregateTime < rhs.aggregateTime) {
return 1;
} else if (lhs.aggregateTime > rhs.aggregateTime) {
return -1;
}
return 0;
}
};
int len = 0;
for (Map.Entry<String, BroadcastStats> be : mBroadcastStats.entrySet()) {
BroadcastStats bs = be.getValue();
for (Map.Entry<Pair<String, ComponentName>, FilterStats> fe
: bs.filterStats.entrySet()) {
FilterStats fs = fe.getValue();
int pos = len > 0
? Arrays.binarySearch(topFilters, 0, len, fs, comparator) : 0;
if (pos < 0) {
pos = -pos - 1;
}
if (pos < topFilters.length) {
int copylen = topFilters.length - pos - 1;
if (copylen > 0) {
System.arraycopy(topFilters, pos, topFilters, pos+1, copylen);
}
topFilters[pos] = fs;
if (len < topFilters.length) {
len++;
}
}
}
}
if (len > 0) {
pw.println(" Top Alarms:");
for (int i=0; i<len; i++) {
FilterStats fs = topFilters[i];
pw.print(" ");
if (fs.nesting > 0) pw.print("*ACTIVE* ");
TimeUtils.formatDuration(fs.aggregateTime, pw);
pw.print(" running, "); pw.print(fs.numWakeup);
pw.print(" wakeups, "); pw.print(fs.count);
pw.print(" alarms: "); pw.print(fs.mBroadcastStats.mPackageName);
pw.println();
pw.print(" ");
if (fs.mTarget.first != null) {
pw.print(" act="); pw.print(fs.mTarget.first);
}
if (fs.mTarget.second != null) {
pw.print(" cmp="); pw.print(fs.mTarget.second.toShortString());
}
pw.println();
}
}
pw.println(" ");
pw.println(" Alarm Stats:");
final ArrayList<FilterStats> tmpFilters = new ArrayList<FilterStats>();
for (Map.Entry<String, BroadcastStats> be : mBroadcastStats.entrySet()) {
BroadcastStats bs = be.getValue();
pw.print(" ");
if (bs.nesting > 0) pw.print("*ACTIVE* ");
pw.print(be.getKey());
pw.print(" "); TimeUtils.formatDuration(bs.aggregateTime, pw);
pw.print(" running, "); pw.print(bs.numWakeup);
pw.println(" wakeups:");
tmpFilters.clear();
for (Map.Entry<Pair<String, ComponentName>, FilterStats> fe
: bs.filterStats.entrySet()) {
tmpFilters.add(fe.getValue());
}
Collections.sort(tmpFilters, comparator);
for (int i=0; i<tmpFilters.size(); i++) {
FilterStats fs = tmpFilters.get(i);
pw.print(" ");
if (fs.nesting > 0) pw.print("*ACTIVE* ");
TimeUtils.formatDuration(fs.aggregateTime, pw);
pw.print(" "); pw.print(fs.numWakeup);
pw.print(" wakes " ); pw.print(fs.count);
pw.print(" alarms:");
if (fs.mTarget.first != null) {
pw.print(" act="); pw.print(fs.mTarget.first);
}
if (fs.mTarget.second != null) {
pw.print(" cmp="); pw.print(fs.mTarget.second.toShortString());
}
pw.println();
}
}
if (WAKEUP_STATS) {
pw.println();
pw.println(" Recent Wakeup History:");
long last = -1;
for (WakeupEvent event : mRecentWakeups) {
pw.print(" "); pw.print(sdf.format(new Date(event.when)));
pw.print('|');
if (last < 0) {
pw.print('0');
} else {
pw.print(event.when - last);
}
last = event.when;
pw.print('|'); pw.print(event.uid);
pw.print('|'); pw.print(event.action);
pw.println();
}
pw.println();
}
}
}
private static final void dumpAlarmList(PrintWriter pw, ArrayList<Alarm> list,
String prefix, String label, long now) {
for (int i=list.size()-1; i>=0; i--) {
Alarm a = list.get(i);
pw.print(prefix); pw.print(label); pw.print(" #"); pw.print(i);
pw.print(": "); pw.println(a);
a.dump(pw, prefix + " ", now);
}
}
private static final String labelForType(int type) {
switch (type) {
case RTC: return "RTC";
case RTC_WAKEUP : return "RTC_WAKEUP";
case ELAPSED_REALTIME : return "ELAPSED";
case ELAPSED_REALTIME_WAKEUP: return "ELAPSED_WAKEUP";
default:
break;
}
return "--unknown--";
}
private static final void dumpAlarmList(PrintWriter pw, ArrayList<Alarm> list,
String prefix, long nowELAPSED, long nowRTC) {
for (int i=list.size()-1; i>=0; i--) {
Alarm a = list.get(i);
final String label = labelForType(a.type);
long now = (a.type <= RTC) ? nowRTC : nowELAPSED;
pw.print(prefix); pw.print(label); pw.print(" #"); pw.print(i);
pw.print(": "); pw.println(a);
a.dump(pw, prefix + " ", now);
}
}
private native int init();
private native void close(int fd);
private native void set(int fd, int type, long seconds, long nanoseconds);
private native int waitForAlarm(int fd);
private native int setKernelTimezone(int fd, int minuteswest);
private void triggerAlarmsLocked(ArrayList<Alarm> triggerList, long nowELAPSED, long nowRTC) {
Batch batch;
// batches are temporally sorted, so we need only pull from the
// start of the list until we either empty it or hit a batch
// that is not yet deliverable
while ((batch = mAlarmBatches.get(0)) != null) {
if (batch.start > nowELAPSED) {
// Everything else is scheduled for the future
break;
}
// We will (re)schedule some alarms now; don't let that interfere
// with delivery of this current batch
mAlarmBatches.remove(0);
final int N = batch.size();
for (int i = 0; i < N; i++) {
Alarm alarm = batch.get(i);
alarm.count = 1;
triggerList.add(alarm);
// Recurring alarms may have passed several alarm intervals while the
// phone was asleep or off, so pass a trigger count when sending them.
if (alarm.repeatInterval > 0) {
// this adjustment will be zero if we're late by
// less than one full repeat interval
alarm.count += (nowELAPSED - alarm.whenElapsed) / alarm.repeatInterval;
// Also schedule its next recurrence
final long delta = alarm.count * alarm.repeatInterval;
final long nextElapsed = alarm.whenElapsed + delta;
setImplLocked(alarm.type, alarm.when + delta, nextElapsed,
maxTriggerTime(nowELAPSED, nextElapsed, alarm.repeatInterval),
alarm.repeatInterval, alarm.operation, batch.standalone, true,
alarm.workSource);
}
}
}
}
/**
* This Comparator sorts Alarms into increasing time order.
*/
public static class IncreasingTimeOrder implements Comparator<Alarm> {
public int compare(Alarm a1, Alarm a2) {
long when1 = a1.when;
long when2 = a2.when;
if (when1 - when2 > 0) {
return 1;
}
if (when1 - when2 < 0) {
return -1;
}
return 0;
}
}
private static class Alarm {
public int type;
public int count;
public long when;
public long whenElapsed; // 'when' in the elapsed time base
public long maxWhen; // also in the elapsed time base
public long repeatInterval;
public PendingIntent operation;
public WorkSource workSource;
public Alarm(int _type, long _when, long _whenElapsed, long _maxWhen,
long _interval, PendingIntent _op, WorkSource _ws) {
type = _type;
when = _when;
whenElapsed = _whenElapsed;
maxWhen = _maxWhen;
repeatInterval = _interval;
operation = _op;
workSource = _ws;
}
@Override
public String toString()
{
StringBuilder sb = new StringBuilder(128);
sb.append("Alarm{");
sb.append(Integer.toHexString(System.identityHashCode(this)));
sb.append(" type ");
sb.append(type);
sb.append(" ");
sb.append(operation.getTargetPackage());
sb.append('}');
return sb.toString();
}
public void dump(PrintWriter pw, String prefix, long now) {
pw.print(prefix); pw.print("type="); pw.print(type);
pw.print(" whenElapsed="); pw.print(whenElapsed);
pw.print(" when="); TimeUtils.formatDuration(when, now, pw);
pw.print(" repeatInterval="); pw.print(repeatInterval);
pw.print(" count="); pw.println(count);
pw.print(prefix); pw.print("operation="); pw.println(operation);
}
}
void recordWakeupAlarms(ArrayList<Batch> batches, long nowELAPSED, long nowRTC) {
final int numBatches = batches.size();
for (int nextBatch = 0; nextBatch < numBatches; nextBatch++) {
Batch b = batches.get(nextBatch);
if (b.start > nowELAPSED) {
break;
}
final int numAlarms = b.alarms.size();
for (int nextAlarm = 0; nextAlarm < numAlarms; nextAlarm++) {
Alarm a = b.alarms.get(nextAlarm);
WakeupEvent e = new WakeupEvent(nowRTC,
a.operation.getCreatorUid(),
a.operation.getIntent().getAction());
mRecentWakeups.add(e);
}
}
}
private class AlarmThread extends Thread
{
public AlarmThread()
{
super("AlarmManager");
}
public void run()
{
ArrayList<Alarm> triggerList = new ArrayList<Alarm>();
while (true)
{
int result = waitForAlarm(mDescriptor);
triggerList.clear();
if ((result & TIME_CHANGED_MASK) != 0) {
if (DEBUG_BATCH) {
Slog.v(TAG, "Time changed notification from kernel; rebatching");
}
remove(mTimeTickSender);
rebatchAllAlarms();
mClockReceiver.scheduleTimeTickEvent();
Intent intent = new Intent(Intent.ACTION_TIME_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING
| Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
}
synchronized (mLock) {
final long nowRTC = System.currentTimeMillis();
final long nowELAPSED = SystemClock.elapsedRealtime();
if (localLOGV) Slog.v(
TAG, "Checking for alarms... rtc=" + nowRTC
+ ", elapsed=" + nowELAPSED);
if (WAKEUP_STATS) {
if ((result & IS_WAKEUP_MASK) != 0) {
long newEarliest = nowRTC - RECENT_WAKEUP_PERIOD;
int n = 0;
for (WakeupEvent event : mRecentWakeups) {
if (event.when > newEarliest) break;
n++; // number of now-stale entries at the list head
}
for (int i = 0; i < n; i++) {
mRecentWakeups.remove();
}
recordWakeupAlarms(mAlarmBatches, nowELAPSED, nowRTC);
}
}
triggerAlarmsLocked(triggerList, nowELAPSED, nowRTC);
rescheduleKernelAlarmsLocked();
// now deliver the alarm intents
for (int i=0; i<triggerList.size(); i++) {
Alarm alarm = triggerList.get(i);
try {
if (localLOGV) Slog.v(TAG, "sending alarm " + alarm);
alarm.operation.send(mContext, 0,
mBackgroundIntent.putExtra(
Intent.EXTRA_ALARM_COUNT, alarm.count),
mResultReceiver, mHandler);
// we have an active broadcast so stay awake.
if (mBroadcastRefCount == 0) {
setWakelockWorkSource(alarm.operation, alarm.workSource);
mWakeLock.acquire();
}
final InFlight inflight = new InFlight(AlarmManagerService.this,
alarm.operation, alarm.workSource);
mInFlight.add(inflight);
mBroadcastRefCount++;
final BroadcastStats bs = inflight.mBroadcastStats;
bs.count++;
if (bs.nesting == 0) {
bs.nesting = 1;
bs.startTime = nowELAPSED;
} else {
bs.nesting++;
}
final FilterStats fs = inflight.mFilterStats;
fs.count++;
if (fs.nesting == 0) {
fs.nesting = 1;
fs.startTime = nowELAPSED;
} else {
fs.nesting++;
}
if (alarm.type == ELAPSED_REALTIME_WAKEUP
|| alarm.type == RTC_WAKEUP) {
bs.numWakeup++;
fs.numWakeup++;
ActivityManagerNative.noteWakeupAlarm(
alarm.operation);
}
} catch (PendingIntent.CanceledException e) {
if (alarm.repeatInterval > 0) {
// This IntentSender is no longer valid, but this
// is a repeating alarm, so toss the hoser.
remove(alarm.operation);
}
} catch (RuntimeException e) {
Slog.w(TAG, "Failure sending alarm.", e);
}
}
}
}
}
}
/**
* Attribute blame for a WakeLock.
* @param pi PendingIntent to attribute blame to if ws is null.
* @param ws WorkSource to attribute blame.
*/
void setWakelockWorkSource(PendingIntent pi, WorkSource ws) {
try {
if (ws != null) {
mWakeLock.setWorkSource(ws);
return;
}
final int uid = ActivityManagerNative.getDefault()
.getUidForIntentSender(pi.getTarget());
if (uid >= 0) {
mWakeLock.setWorkSource(new WorkSource(uid));
return;
}
} catch (Exception e) {
}
// Something went wrong; fall back to attributing the lock to the OS
mWakeLock.setWorkSource(null);
}
private class AlarmHandler extends Handler {
public static final int ALARM_EVENT = 1;
public static final int MINUTE_CHANGE_EVENT = 2;
public static final int DATE_CHANGE_EVENT = 3;
public AlarmHandler() {
}
public void handleMessage(Message msg) {
if (msg.what == ALARM_EVENT) {
ArrayList<Alarm> triggerList = new ArrayList<Alarm>();
synchronized (mLock) {
final long nowRTC = System.currentTimeMillis();
final long nowELAPSED = SystemClock.elapsedRealtime();
triggerAlarmsLocked(triggerList, nowELAPSED, nowRTC);
}
// now trigger the alarms without the lock held
for (int i=0; i<triggerList.size(); i++) {
Alarm alarm = triggerList.get(i);
try {
alarm.operation.send();
} catch (PendingIntent.CanceledException e) {
if (alarm.repeatInterval > 0) {
// This IntentSender is no longer valid, but this
// is a repeating alarm, so toss the hoser.
remove(alarm.operation);
}
}
}
}
}
}
class ClockReceiver extends BroadcastReceiver {
public ClockReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_TIME_TICK);
filter.addAction(Intent.ACTION_DATE_CHANGED);
mContext.registerReceiver(this, filter);
}
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_TIME_TICK)) {
if (DEBUG_BATCH) {
Slog.v(TAG, "Received TIME_TICK alarm; rescheduling");
}
scheduleTimeTickEvent();
} else if (intent.getAction().equals(Intent.ACTION_DATE_CHANGED)) {
// Since the kernel does not keep track of DST, we need to
// reset the TZ information at the beginning of each day
// based off of the current Zone gmt offset + userspace tracked
// daylight savings information.
TimeZone zone = TimeZone.getTimeZone(SystemProperties.get(TIMEZONE_PROPERTY));
int gmtOffset = zone.getOffset(System.currentTimeMillis());
setKernelTimezone(mDescriptor, -(gmtOffset / 60000));
scheduleDateChangedEvent();
}
}
public void scheduleTimeTickEvent() {
final long currentTime = System.currentTimeMillis();
final long nextTime = 60000 * ((currentTime / 60000) + 1);
// Schedule this event for the amount of time that it would take to get to
// the top of the next minute.
final long tickEventDelay = nextTime - currentTime;
final WorkSource workSource = null; // Let system take blame for time tick events.
set(ELAPSED_REALTIME, SystemClock.elapsedRealtime() + tickEventDelay, 0,
0, mTimeTickSender, true, workSource);
}
public void scheduleDateChangedEvent() {
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
calendar.add(Calendar.DAY_OF_MONTH, 1);
final WorkSource workSource = null; // Let system take blame for date change events.
set(RTC, calendar.getTimeInMillis(), 0, 0, mDateChangeSender, true, workSource);
}
}
class UninstallReceiver extends BroadcastReceiver {
public UninstallReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addAction(Intent.ACTION_PACKAGE_RESTARTED);
filter.addAction(Intent.ACTION_QUERY_PACKAGE_RESTART);
filter.addDataScheme("package");
mContext.registerReceiver(this, filter);
// Register for events related to sdcard installation.
IntentFilter sdFilter = new IntentFilter();
sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
sdFilter.addAction(Intent.ACTION_USER_STOPPED);
mContext.registerReceiver(this, sdFilter);
}
@Override
public void onReceive(Context context, Intent intent) {
synchronized (mLock) {
String action = intent.getAction();
String pkgList[] = null;
if (Intent.ACTION_QUERY_PACKAGE_RESTART.equals(action)) {
pkgList = intent.getStringArrayExtra(Intent.EXTRA_PACKAGES);
for (String packageName : pkgList) {
if (lookForPackageLocked(packageName)) {
setResultCode(Activity.RESULT_OK);
return;
}
}
return;
} else if (Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(action)) {
pkgList = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
} else if (Intent.ACTION_USER_STOPPED.equals(action)) {
int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1);
if (userHandle >= 0) {
removeUserLocked(userHandle);
}
} else {
if (Intent.ACTION_PACKAGE_REMOVED.equals(action)
&& intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) {
// This package is being updated; don't kill its alarms.
return;
}
Uri data = intent.getData();
if (data != null) {
String pkg = data.getSchemeSpecificPart();
if (pkg != null) {
pkgList = new String[]{pkg};
}
}
}
if (pkgList != null && (pkgList.length > 0)) {
for (String pkg : pkgList) {
removeLocked(pkg);
mBroadcastStats.remove(pkg);
}
}
}
}
}
private final BroadcastStats getStatsLocked(PendingIntent pi) {
String pkg = pi.getTargetPackage();
BroadcastStats bs = mBroadcastStats.get(pkg);
if (bs == null) {
bs = new BroadcastStats(pkg);
mBroadcastStats.put(pkg, bs);
}
return bs;
}
class ResultReceiver implements PendingIntent.OnFinished {
public void onSendFinished(PendingIntent pi, Intent intent, int resultCode,
String resultData, Bundle resultExtras) {
synchronized (mLock) {
InFlight inflight = null;
for (int i=0; i<mInFlight.size(); i++) {
if (mInFlight.get(i).mPendingIntent == pi) {
inflight = mInFlight.remove(i);
break;
}
}
if (inflight != null) {
final long nowELAPSED = SystemClock.elapsedRealtime();
BroadcastStats bs = inflight.mBroadcastStats;
bs.nesting--;
if (bs.nesting <= 0) {
bs.nesting = 0;
bs.aggregateTime += nowELAPSED - bs.startTime;
}
FilterStats fs = inflight.mFilterStats;
fs.nesting--;
if (fs.nesting <= 0) {
fs.nesting = 0;
fs.aggregateTime += nowELAPSED - fs.startTime;
}
} else {
mLog.w("No in-flight alarm for " + pi + " " + intent);
}
mBroadcastRefCount--;
if (mBroadcastRefCount == 0) {
mWakeLock.release();
if (mInFlight.size() > 0) {
mLog.w("Finished all broadcasts with " + mInFlight.size()
+ " remaining inflights");
for (int i=0; i<mInFlight.size(); i++) {
mLog.w(" Remaining #" + i + ": " + mInFlight.get(i));
}
mInFlight.clear();
}
} else {
// the next of our alarms is now in flight. reattribute the wakelock.
if (mInFlight.size() > 0) {
InFlight inFlight = mInFlight.get(0);
setWakelockWorkSource(inFlight.mPendingIntent, inFlight.mWorkSource);
} else {
// should never happen
mLog.w("Alarm wakelock still held but sent queue empty");
mWakeLock.setWorkSource(null);
}
}
}
}
}
}
|