summaryrefslogtreecommitdiffstats
path: root/src/Pegasus/Common/Monitor.cpp
blob: 1811d2aed9b6eef15f6ada446f4e65be7ce01f9f (plain)
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
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
//%2003////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002  BMC Software, Hewlett-Packard Development
// Company, L. P., IBM Corp., The Open Group, Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L. P.;
// IBM Corp.; EMC Corporation, The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
// Author: Mike Brasher (mbrasher@bmc.com)
//
// Modified By: Mike Day (monitor_2) mdday@us.ibm.com 
//              Amit K Arora (Bug#1153) amita@in.ibm.com
//
//%/////////////////////////////////////////////////////////////////////////////

#include <Pegasus/Common/Config.h>

#include <cstring>
#include "Monitor.h"
#include "MessageQueue.h"
#include "Socket.h"
#include <Pegasus/Common/Tracer.h>
#include <Pegasus/Common/HTTPConnection.h>
#include <Pegasus/Common/MessageQueueService.h>
#include <Pegasus/Common/Exception.h>

#ifdef PEGASUS_OS_TYPE_WINDOWS
# if defined(FD_SETSIZE) && FD_SETSIZE != 1024
#  error "FD_SETSIZE was not set to 1024 prior to the last inclusion \
of <winsock.h>. It may have been indirectly included (e.g., by including \
<windows.h>). Finthe inclusion of that header which is visible to this \
compilation unit and #define FD_SETZIE to 1024 prior to that inclusion; \
otherwise, less than 64 clients (the default) will be able to connect to the \
CIMOM. PLEASE DO NOT SUPPRESS THIS WARNING; PLEASE FIX THE PROBLEM."

# endif
# define FD_SETSIZE 1024
# include <windows.h>
#else
# include <sys/types.h>
# include <sys/socket.h>
# include <sys/time.h>
# include <netinet/in.h>
# include <netdb.h>
# include <arpa/inet.h>
#endif

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN


static AtomicInt _connections = 0;

static struct timeval create_time = {0, 1};
static struct timeval destroy_time = {300, 0};
static struct timeval deadlock_time = {0, 0};

////////////////////////////////////////////////////////////////////////////////
//
// MonitorRep
//
////////////////////////////////////////////////////////////////////////////////

struct MonitorRep
{
    fd_set rd_fd_set;
    fd_set wr_fd_set;
    fd_set ex_fd_set;
    fd_set active_rd_fd_set;
    fd_set active_wr_fd_set;
    fd_set active_ex_fd_set;
};

////////////////////////////////////////////////////////////////////////////////
//
// Monitor
//
////////////////////////////////////////////////////////////////////////////////

#define MAX_NUMBER_OF_MONITOR_ENTRIES  32
Monitor::Monitor()
   : _module_handle(0), 
     _controller(0),
     _async(false),
     _stopConnections(0),
     _stopConnectionsSem(0),
     _solicitSocketCount(0)
{
    int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES;
    Socket::initializeInterface();
    _rep = 0;
    _entries.reserveCapacity(numberOfMonitorEntriesToAllocate);

    // setup the tickler
    initializeTickler();
    
    // Start the count at 1 because initilizeTickler() 
    // has added an entry in the first position of the 
    // _entries array
    for( int i = 1; i < numberOfMonitorEntriesToAllocate; i++ )
    {
       _MonitorEntry entry(0, 0, 0);
       _entries.append(entry);
    }
}

Monitor::Monitor(Boolean async)
   : _module_handle(0),
     _controller(0),
     _async(async),
     _stopConnections(0),
     _stopConnectionsSem(0),
     _solicitSocketCount(0)
{
    int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES;
    Socket::initializeInterface();
    _rep = 0;
    _entries.reserveCapacity(numberOfMonitorEntriesToAllocate);

    // setup the tickler
    initializeTickler();

    // Start the count at 1 because initilizeTickler() 
    // has added an entry in the first position of the
    // _entries array
    for( int i = 1; i < numberOfMonitorEntriesToAllocate; i++ )
    {
       _MonitorEntry entry(0, 0, 0);
       _entries.append(entry);
    }
}

Monitor::~Monitor()
{
    Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
                  "deregistering with module controller");

    if(_module_handle != NULL)
    {
       _controller->deregister_module(PEGASUS_MODULENAME_MONITOR);
       _controller = 0;
       delete _module_handle;
    }
    Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "deleting rep");

    Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "uninitializing interface");
    Socket::uninitializeInterface();
    Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
                  "returning from monitor destructor");
}

void Monitor::initializeTickler(){
    /* 
       NOTE: On any errors trying to 
             setup out tickle connection, 
             throw an exception/end the server
    */

    /* setup the tickle server/listener */

    // get a socket for the server side
    if((_tickle_server_socket = ::socket(PF_INET, SOCK_STREAM, 0)) < 0){
	//handle error
	MessageLoaderParms parms("Common.Monitor.TICKLE_CREATE",
				 "Received error number $0 while creating the internal socket.",
#if !defined(PEGASUS_OS_TYPE_WINDOWS)
				 errno);
#else
				 WSAGetLastError());
#endif
	throw Exception(parms);
    }

    // initialize the address
    memset(&_tickle_server_addr, 0, sizeof(_tickle_server_addr));
#ifdef PEGASUS_OS_ZOS
    _tickle_server_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1");
#else
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
#pragma convert(37)
#endif
    _tickle_server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
#pragma convert(0)
#endif
#endif
    _tickle_server_addr.sin_family = PF_INET;
    _tickle_server_addr.sin_port = 0;

    PEGASUS_SOCKLEN_SIZE _addr_size = sizeof(_tickle_server_addr);

    // bind server side to socket
    if((::bind(_tickle_server_socket,
	       (struct sockaddr *)&_tickle_server_addr, 
	       sizeof(_tickle_server_addr))) < 0){
	// handle error
	MessageLoaderParms parms("Common.Monitor.TICKLE_BIND",
				 "Received error number $0 while binding the internal socket.",
#if !defined(PEGASUS_OS_TYPE_WINDOWS)
				 errno);
#else
				 WSAGetLastError());
#endif
        throw Exception(parms);
    }

    // tell the kernel we are a server
    if((::listen(_tickle_server_socket,3)) < 0){
	// handle error
	MessageLoaderParms parms("Common.Monitor.TICKLE_LISTEN",
			 "Received error number $0 while listening to the internal socket.",
#if !defined(PEGASUS_OS_TYPE_WINDOWS)
				 errno);
#else
				 WSAGetLastError());
#endif
	throw Exception(parms);
    }
    
    // make sure we have the correct socket for our server
    int sock = ::getsockname(_tickle_server_socket,
			     (struct sockaddr*)&_tickle_server_addr,
			     &_addr_size); 
    if(sock < 0){
	// handle error
	MessageLoaderParms parms("Common.Monitor.TICKLE_SOCKNAME",
			 "Received error number $0 while getting the internal socket name.",
#if !defined(PEGASUS_OS_TYPE_WINDOWS)
				 errno);
#else
				 WSAGetLastError());
#endif
	throw Exception(parms);
    }

    /* set up the tickle client/connector */
     
    // get a socket for our tickle client
    if((_tickle_client_socket = ::socket(PF_INET, SOCK_STREAM, 0)) < 0){
	// handle error
	MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_CREATE",
			 "Received error number $0 while creating the internal client socket.",
#if !defined(PEGASUS_OS_TYPE_WINDOWS)
				 errno);
#else
				 WSAGetLastError());
#endif
	throw Exception(parms);
    }

    // setup the address of the client
    memset(&_tickle_client_addr, 0, sizeof(_tickle_client_addr));
#ifdef PEGASUS_OS_ZOS
    _tickle_client_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1");
#else
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
#pragma convert(37)
#endif
    _tickle_client_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
#pragma convert(0)
#endif
#endif
    _tickle_client_addr.sin_family = PF_INET;
    _tickle_client_addr.sin_port = 0;

    // bind socket to client side
    if((::bind(_tickle_client_socket,
	       (struct sockaddr*)&_tickle_client_addr,
	       sizeof(_tickle_client_addr))) < 0){
	// handle error
	MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_BIND",
			 "Received error number $0 while binding the internal client socket.",
#if !defined(PEGASUS_OS_TYPE_WINDOWS)
				 errno);
#else
				 WSAGetLastError());
#endif
	throw Exception(parms);
    }

    // connect to server side
    if((::connect(_tickle_client_socket,
		  (struct sockaddr*)&_tickle_server_addr,
		  sizeof(_tickle_server_addr))) < 0){
	// handle error
	MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_CONNECT",
			 "Received error number $0 while connecting the internal client socket.",
#if !defined(PEGASUS_OS_TYPE_WINDOWS)
				 errno);
#else
				 WSAGetLastError());
#endif
	throw Exception(parms);
    }

    /* set up the slave connection */
    memset(&_tickle_peer_addr, 0, sizeof(_tickle_peer_addr));
    PEGASUS_SOCKLEN_SIZE peer_size = sizeof(_tickle_peer_addr);
    pegasus_sleep(1); 

    // this call may fail, we will try a max of 20 times to establish this peer connection
    if((_tickle_peer_socket = ::accept(_tickle_server_socket,
				       (struct sockaddr*)&_tickle_peer_addr,
				       &peer_size)) < 0){
#if !defined(PEGASUS_OS_TYPE_WINDOWS)
        // Only retry on non-windows platforms.
        if(_tickle_peer_socket == -1 && errno == EAGAIN)
        {
          int retries = 0;                                                                        
          do
          {
            pegasus_sleep(1);
            _tickle_peer_socket = ::accept(_tickle_server_socket,
					   (struct sockaddr*)&_tickle_peer_addr,
					   &peer_size);
            retries++;
          } while(_tickle_peer_socket == -1 && errno == EAGAIN && retries < 20);
        }
#endif
    }
    if(_tickle_peer_socket == -1){
	// handle error
	MessageLoaderParms parms("Common.Monitor.TICKLE_ACCEPT",
			 "Received error number $0 while accepting the internal socket connection.",
#if !defined(PEGASUS_OS_TYPE_WINDOWS)
				 errno);
#else
				 WSAGetLastError());
#endif
	throw Exception(parms);
    }
    // add the tickler to the list of entries to be monitored and set to IDLE because Monitor only
    // checks entries with IDLE state for events
    _MonitorEntry entry(_tickle_peer_socket, 1, INTERNAL);
    entry._status = _MonitorEntry::IDLE;
    _entries.append(entry);
}

void Monitor::tickle(void)
{
  static char _buffer[] =
    {
      '0','0'
    };
             
  Socket::disableBlocking(_tickle_client_socket);    
  Socket::write(_tickle_client_socket,&_buffer, 2);
  Socket::enableBlocking(_tickle_client_socket); 
}

Boolean Monitor::run(Uint32 milliseconds)
{

    Boolean handled_events = false;
    int i = 0;
     
    struct timeval tv = {milliseconds/1000, milliseconds%1000*1000};

    fd_set fdread;
    FD_ZERO(&fdread);

    _entry_mut.lock(pegasus_thread_self());
    
    // Check the stopConnections flag.  If set, clear the Acceptor monitor entries  
    if (_stopConnections == 1) 
    {
        for ( int indx = 0; indx < (int)_entries.size(); indx++)
        {
            if (_entries[indx]._type == Monitor::ACCEPTOR)
            {
                if ( _entries[indx]._status.value() != _MonitorEntry::EMPTY)
                {
                   if ( _entries[indx]._status.value() == _MonitorEntry::IDLE ||
                        _entries[indx]._status.value() == _MonitorEntry::DYING )
                   {
                       // remove the entry
		       _entries[indx]._status = _MonitorEntry::EMPTY;
                   }
                   else
                   {
                       // set status to DYING
                      _entries[indx]._status = _MonitorEntry::DYING;
                   }
               }
           }
        }
        _stopConnections = 0;
	_stopConnectionsSem.signal();
    }

    for( int indx = 0; indx < (int)_entries.size(); indx++)
    {
       if ((_entries[indx]._status.value() == _MonitorEntry::DYING) &&
                (_entries[indx]._type == Monitor::CONNECTION))
       {
          MessageQueue *q = MessageQueue::lookup(_entries[indx].queueId);
          PEGASUS_ASSERT(q != 0);
          MessageQueue & o = static_cast<HTTPConnection *>(q)->get_owner();
          Message* message= new CloseConnectionMessage(_entries[indx].socket);
          message->dest = o.getQueueId();

          // HTTPAcceptor is responsible for closing the connection. 
          // The lock is released to allow HTTPAcceptor to call
          // unsolicitSocketMessages to free the entry. 
          // Once HTTPAcceptor completes processing of the close
          // connection, the lock is re-requested and processing of
          // the for loop continues.  This is safe with the current
          // implementation of the _entries object.  Note that the
          // loop condition accesses the _entries.size() on each
          // iteration, so that a change in size while the mutex is
          // unlocked will not result in an ArrayIndexOutOfBounds
          // exception.

          _entry_mut.unlock();
          o.enqueue(message);
          _entry_mut.lock(pegasus_thread_self());
       }
    }

    Uint32 _idleEntries = 0;
   
    /*
	We will keep track of the maximum socket number and pass this value
	to the kernel as a parameter to SELECT.  This loop seems like a good 
	place to calculate the max file descriptor (maximum socket number)
	because we have to traverse the entire array.
    */ 
    int maxSocketCurrentPass = 0;
    for( int indx = 0; indx < (int)_entries.size(); indx++)
    {
       if(maxSocketCurrentPass < _entries[indx].socket)
	  maxSocketCurrentPass = _entries[indx].socket;

       if(_entries[indx]._status.value() == _MonitorEntry::IDLE)
       {
	  _idleEntries++;
	  FD_SET(_entries[indx].socket, &fdread);
       }
    }

    /*
	Add 1 then assign maxSocket accordingly. We add 1 to account for
	descriptors starting at 0.
    */
    maxSocketCurrentPass++;

    _entry_mut.unlock(); 
    int events = select(maxSocketCurrentPass, &fdread, NULL, NULL, &tv);
   _entry_mut.lock(pegasus_thread_self());

#ifdef PEGASUS_OS_TYPE_WINDOWS
    if(events == SOCKET_ERROR)
#else
    if(events == -1)
#endif
    {
       Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
          "Monitor::run - errorno = %d has occurred on select.", errno);
       // The EBADF error indicates that one or more or the file
       // descriptions was not valid. This could indicate that
       // the _entries structure has been corrupted or that
       // we have a synchronization error.

       PEGASUS_ASSERT(errno != EBADF);
    }
    else if (events)
    {
       Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
          "Monitor::run select event received events = %d, monitoring %d idle entries", 
	   events, _idleEntries);
       for( int indx = 0; indx < (int)_entries.size(); indx++)
       {
          // The Monitor should only look at entries in the table that are IDLE (i.e.,
          // owned by the Monitor).
	  if((_entries[indx]._status.value() == _MonitorEntry::IDLE) && 
	     (FD_ISSET(_entries[indx].socket, &fdread)))
	  {
	     MessageQueue *q = MessageQueue::lookup(_entries[indx].queueId);
             Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
                  "Monitor::run indx = %d, queueId =  %d, q = %p",
                  indx, _entries[indx].queueId, q);
             PEGASUS_ASSERT(q !=0);

	     try 
	     {
		if(_entries[indx]._type == Monitor::CONNECTION)
		{
                   Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
                     "_entries[indx].type for indx = %d is Monitor::CONNECTION", indx);
		   static_cast<HTTPConnection *>(q)->_entry_index = indx;
		   _entries[indx]._status = _MonitorEntry::BUSY;
                   // If allocate_and_awaken failure, retry on next iteration
/* Removed for PEP 183.
                   if (!MessageQueueService::get_thread_pool()->allocate_and_awaken(
                           (void *)q, _dispatch))
                   {
                      Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,
                          "Monitor::run: Insufficient resources to process request.");
                      _entries[indx]._status = _MonitorEntry::IDLE;
                      _entry_mut.unlock();
                      return true;
                   }
*/
// Added for PEP 183
		   HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(q);
  			 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
                         "Monitor::_dispatch: entering run() for indx  = %d, queueId = %d, q = %p",
                   dst->_entry_index, dst->_monitor->_entries[dst->_entry_index].queueId, dst);
                   try
                   {
                       dst->run(1);
                   }
   		   catch (...)
   		   {
      			Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
          		"Monitor::_dispatch: exception received");
   		   }
   		   Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
                   "Monitor::_dispatch: exited run() for index %d", dst->_entry_index);

   		   PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.value() == _MonitorEntry::BUSY);                                                         
		   // Once the HTTPConnection thread has set the status value to either
		   // Monitor::DYING or Monitor::IDLE, it has returned control of the connection
		   // to the Monitor.  It is no longer permissible to access the connection
		   // or the entry in the _entries table.
		   if (dst->_connectionClosePending)
		   {  
		     dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING;
		   }
		   else
		   {
		     dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE;
		   }	
// end Added for PEP 183
		}
	        else if( _entries[indx]._type == Monitor::INTERNAL){
			// set ourself to BUSY, 
                        // read the data  
                        // and set ourself back to IDLE
		
		   	_entries[indx]._status == _MonitorEntry::BUSY;
			static char buffer[2];
      			Socket::disableBlocking(_entries[indx].socket);
      			Sint32 amt = Socket::read(_entries[indx].socket,&buffer, 2);
      			Socket::enableBlocking(_entries[indx].socket);
			_entries[indx]._status == _MonitorEntry::IDLE;
		}
		else
		{
                   Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
                     "Non-connection entry, indx = %d, has been received.", indx);
		   int events = 0;
		   events |= SocketMessage::READ;
		   Message *msg = new SocketMessage(_entries[indx].socket, events);
		   _entries[indx]._status = _MonitorEntry::BUSY;
		   _entry_mut.unlock();

		   q->enqueue(msg);
		   _entries[indx]._status = _MonitorEntry::IDLE;
		   return true;
		}
	     }
	     catch(...)
	     {
	     }
	     handled_events = true;
	  }
       }
    }
    _entry_mut.unlock();
    return(handled_events);
}

void Monitor::stopListeningForConnections()
{
    PEG_METHOD_ENTER(TRC_HTTP, "Monitor::stopListeningForConnections()");
    // set boolean then tickle the server to recognize _stopConnections 
    _stopConnections = 1;
    tickle();

    // Wait for the monitor to notice _stopConnections.  Otherwise the
    // caller of this function may unbind the ports while the monitor
    // is still accepting connections on them.
    try
    {
      _stopConnectionsSem.time_wait(10000);
    }
    catch (TimeOut &)
    {
      // The monitor is probably busy processng a very long request, and is
      // not accepting connections.  Let the caller unbind the ports.
    }
    
    PEG_METHOD_EXIT();
}


int  Monitor::solicitSocketMessages(
    Sint32 socket, 
    Uint32 events,
    Uint32 queueId, 
    int type)
{
   PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solicitSocketMessages");                                        
   _entry_mut.lock(pegasus_thread_self());
   // Check to see if we need to dynamically grow the _entries array
   // We always want the _entries array to 2 bigger than the
   // current connections requested
   _solicitSocketCount++;  // bump the count
   int size = (int)_entries.size();
   if(_solicitSocketCount >= (size-1)){
        for(int i = 0; i < (_solicitSocketCount - (size-1)); i++){
                _MonitorEntry entry(0, 0, 0);
                _entries.append(entry);
        }
   }

   int index;
   for(index = 1; index < (int)_entries.size(); index++)
   {
      try
      {
         if(_entries[index]._status.value() == _MonitorEntry::EMPTY)
         {
            _entries[index].socket = socket;
            _entries[index].queueId  = queueId;
            _entries[index]._type = type;
            _entries[index]._status = _MonitorEntry::IDLE;
            _entry_mut.unlock();
                                    
            return index;
         }
      }
      catch(...)
      {
      }
   }
   _solicitSocketCount--;  // decrease the count, if we are here we didnt do anything meaningful
   _entry_mut.unlock();
   PEG_METHOD_EXIT();
   return -1;

}

void Monitor::unsolicitSocketMessages(Sint32 socket)
{

    PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages");
    _entry_mut.lock(pegasus_thread_self());

    /*
        Start at index = 1 because _entries[0] is the tickle entry which never needs
        to be EMPTY;
    */
    int index;
    for(index = 1; index < _entries.size(); index++)
    {
       if(_entries[index].socket == socket)
       {
          _entries[index]._status = _MonitorEntry::EMPTY;
          _entries[index].socket = -1;
          _solicitSocketCount--;
          break;
       }
    }

    /*
	Dynamic Contraction:
	To remove excess entries we will start from the end of the _entries array
	and remove all entries with EMPTY status until we find the first NON EMPTY.
	This prevents the positions, of the NON EMPTY entries, from being changed.
    */ 
    index = _entries.size() - 1;
    while(_entries[index]._status == _MonitorEntry::EMPTY){
	if(_entries.size() > MAX_NUMBER_OF_MONITOR_ENTRIES)
                _entries.remove(index);
	index--;
    }

    _entry_mut.unlock();
    PEG_METHOD_EXIT();
}

// Note: this is no longer called with PEP 183.
PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm)
{
   HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(parm);
   Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
        "Monitor::_dispatch: entering run() for indx  = %d, queueId = %d, q = %p",
        dst->_entry_index, dst->_monitor->_entries[dst->_entry_index].queueId, dst);
   try
   {
      dst->run(1);
   }
   catch (...)
   {
      Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
          "Monitor::_dispatch: exception received");
   }
   Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
          "Monitor::_dispatch: exited run() for index %d", dst->_entry_index);
   
   PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.value() == _MonitorEntry::BUSY);

   // Once the HTTPConnection thread has set the status value to either
   // Monitor::DYING or Monitor::IDLE, it has returned control of the connection
   // to the Monitor.  It is no longer permissible to access the connection
   // or the entry in the _entries table.
   if (dst->_connectionClosePending)
   {
      dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING;
   }
   else
   {
      dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE;
   }
   return 0;
}



////************************* monitor 2 *****************************////
////************************* monitor 2 *****************************////
////************************* monitor 2 *****************************////
////************************* monitor 2 *****************************////
////************************* monitor 2 *****************************////
////************************* monitor 2 *****************************////
////************************* monitor 2 *****************************////





m2e_rep::m2e_rep(void)
  :Base(), state(IDLE)

{
}

m2e_rep::m2e_rep(monitor_2_entry_type _type, 
		 pegasus_socket _sock, 
		 void* _accept, 
		 void* _dispatch)
  : Base(), type(_type), state(IDLE), psock(_sock), 
    accept_parm(_accept), dispatch_parm(_dispatch)
{
  
}

m2e_rep::~m2e_rep(void)
{
}

m2e_rep::m2e_rep(const m2e_rep& r)
  : Base()
{
  if(this != &r){
    type = r.type;
    psock = r.psock;
    accept_parm = r.accept_parm;
    dispatch_parm = r.dispatch_parm;
    state = IDLE;
    
  }
}


m2e_rep& m2e_rep::operator =(const m2e_rep& r)
{
  if(this != &r) {
    type = r.type;
    psock = r.psock;
    accept_parm = r.accept_parm;
    dispatch_parm = r.dispatch_parm;
    state = IDLE;
  }
  return *this;
}

Boolean m2e_rep::operator ==(const m2e_rep& r)
{
  if(this == &r)
    return true;
  return false;
}

Boolean m2e_rep::operator ==(void* r)
{
  if((void*)this == r)
    return true;
  return false;
}

m2e_rep::operator pegasus_socket() const 
{
  return psock;
}


monitor_2_entry::monitor_2_entry(void)
{
  _rep = new m2e_rep();
}

monitor_2_entry::monitor_2_entry(pegasus_socket& _psock, 
				 monitor_2_entry_type _type, 
				 void* _accept_parm, void* _dispatch_parm)
{
  _rep = new m2e_rep(_type, _psock, _accept_parm, _dispatch_parm);
}

monitor_2_entry::monitor_2_entry(const monitor_2_entry& e)
{
  if(this != &e){
    Inc(this->_rep = e._rep);
  }
}

monitor_2_entry::~monitor_2_entry(void)
{
   
  Dec(_rep);
}

monitor_2_entry& monitor_2_entry::operator=(const monitor_2_entry& e)
{
  if(this != &e){
    Dec(_rep);
    Inc(this->_rep = e._rep);
  }
  return *this;
}

Boolean monitor_2_entry::operator ==(const monitor_2_entry& me) const
{
  if(this == &me)
    return true;
  return false;
}

Boolean monitor_2_entry::operator ==(void* k) const
{
  if((void *)this == k)
    return true;
  return false;
}


monitor_2_entry_type monitor_2_entry::get_type(void) const
{
  return _rep->type;
}

void monitor_2_entry::set_type(monitor_2_entry_type t)
{
  _rep->type = t;
}


monitor_2_entry_state  monitor_2_entry::get_state(void) const
{
  return (monitor_2_entry_state) _rep->state.value();
}

void monitor_2_entry::set_state(monitor_2_entry_state t)
{
  _rep->state = t;
}

void* monitor_2_entry::get_accept(void) const
{
  return _rep->accept_parm;
}

void monitor_2_entry::set_accept(void* a)
{
  _rep->accept_parm = a;
}


void* monitor_2_entry::get_dispatch(void) const
{
  return _rep->dispatch_parm;
}

void monitor_2_entry::set_dispatch(void* a)
{
  _rep->dispatch_parm = a;
}

pegasus_socket monitor_2_entry::get_sock(void) const
{
  return _rep->psock;
}


void monitor_2_entry::set_sock(pegasus_socket& s)
{
  _rep->psock = s;
  
}

//static monitor_2* _m2_instance;

AsyncDQueue<HTTPConnection2> monitor_2::_connections(true, 0);

monitor_2::monitor_2(void)
  : _session_dispatch(0), _accept_dispatch(0), _listeners(true, 0), 
    _ready(true, 0), _die(0), _requestCount(0)
{
  try {
    
    bsd_socket_factory _factory;

    // set up the listener/acceptor 
    pegasus_socket temp = pegasus_socket(&_factory);
    
    temp.socket(PF_INET, SOCK_STREAM, 0);
    // initialize the address
    memset(&_tickle_addr, 0, sizeof(_tickle_addr));
#ifdef PEGASUS_OS_ZOS
    _tickle_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1");
#else
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
#pragma convert(37)
#endif
    _tickle_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
#pragma convert(0)
#endif
#endif
    _tickle_addr.sin_family = PF_INET;
    _tickle_addr.sin_port = 0;

    PEGASUS_SOCKLEN_SIZE _addr_size = sizeof(_tickle_addr);
    
    temp.bind((struct sockaddr *)&_tickle_addr, sizeof(_tickle_addr));
    temp.listen(3);  
    temp.getsockname((struct sockaddr*)&_tickle_addr, &_addr_size);

    // set up the connector

    pegasus_socket tickler = pegasus_socket(&_factory);
    tickler.socket(PF_INET, SOCK_STREAM, 0);
    struct sockaddr_in _addr;
    memset(&_addr, 0, sizeof(_addr));
#ifdef PEGASUS_OS_ZOS
    _addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1");
#else
    _addr.sin_addr.s_addr = inet_addr("127.0.0.1");
#endif
    _addr.sin_family = PF_INET;
    _addr.sin_port = 0;
    tickler.bind((struct sockaddr*)&_addr, sizeof(_addr));
    tickler.connect((struct sockaddr*)&_tickle_addr, sizeof(_tickle_addr));

    _tickler.set_sock(tickler);
    _tickler.set_type(INTERNAL);
    _tickler.set_state(BUSY);
    
    struct sockaddr_in peer;
    memset(&peer, 0, sizeof(peer));
    PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer);

    pegasus_socket accepted = temp.accept((struct sockaddr*)&peer, &peer_size);
    
    monitor_2_entry* _tickle = new monitor_2_entry(accepted, INTERNAL, 0, 0);

// No need to set _tickle's state as BUSY, since monitor_2::run() now
// does a select only on sockets which are in IDLE (default) state.
//  _tickle->set_state(BUSY);
    
    _listeners.insert_first(_tickle);

  }
  catch(...){  }
}

monitor_2::~monitor_2(void)
{

   stop();

  try {
    monitor_2_entry* temp = _listeners.remove_first();
    while(temp){
      delete temp;
      temp = _listeners.remove_first();
    }
  }

  catch(...){  }
  

  try 
  {
     HTTPConnection2* temp = _connections.remove_first();
     while(temp)
     {
	delete temp;
	temp = _connections.remove_first();
     }
  }
  catch(...)
  {
  }
  

}


void monitor_2::run(void)
{
  monitor_2_entry* temp;
  int _nonIdle=0, _idleCount=0, events;

  while(_die.value() == 0) {
    _nonIdle=_idleCount=0;
     
     struct timeval tv_idle = { 60, 0 };
     
    // place all sockets in the select set 
    FD_ZERO(&rd_fd_set);
    try {
      _listeners.lock(pegasus_thread_self());
      temp = _listeners.next(0);
      Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
       "monitor_2::run:Creating New FD list for SELECT.");
      while(temp != 0 ){
	if(temp->get_state() == CLOSED ) {
	  monitor_2_entry* closed = temp;
      temp = _listeners.next(closed);
	  _listeners.remove_no_lock(closed);
      
      Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
       "monitor_2::run:Deleteing CLOSED socket fd=%d.",(Sint32)closed->get_sock());
	  
	  HTTPConnection2 *cn = monitor_2::remove_connection((Sint32)(closed->get_sock()));
	  delete cn;
	  delete closed;
	}
	if(temp == 0)
	   break;


        //Count the number if IDLE sockets
        if(temp->get_state() != IDLE ) _nonIdle++;
         else _idleCount++;

	Sint32 fd = (Sint32) temp->get_sock();

        //Select should be called ONLY on the FDs which are in IDLE state
	if((fd >= 0) && (temp->get_state() == IDLE))
        {
          Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
           "monitor_2::run:Adding FD %d to the list for SELECT.",fd);
	  FD_SET(fd , &rd_fd_set);
        }
	   temp = _listeners.next(temp);
      }
      _listeners.unlock();
    } 
    catch(...){
      return;
    }

    // important -  the dispatch routine has pointers to all the 
    // entries that are readable. These entries can be changed but 
    // the pointer must not be tampered with. 
    if(_connections.count() )
       events = select(FD_SETSIZE, &rd_fd_set, NULL, NULL, NULL);
    else
       events = select(FD_SETSIZE, &rd_fd_set, NULL, NULL, &tv_idle);
    
    if(_die.value())
    {
       break;
    }

#ifdef PEGASUS_OS_TYPE_WINDOWS
    if(events == SOCKET_ERROR)
#else
    if(events == -1)
#endif
    {
       Tracer::trace(TRC_HTTP, Tracer::LEVEL2,
          "monitor_2:run:INVALID FD. errorno = %d on select.", errno);
       // The EBADF error indicates that one or more or the file
       // descriptions was not valid. This could indicate that
       // the _entries structure has been corrupted or that
       // we have a synchronization error.

     // Keeping the line below commented for time being.
     //  PEGASUS_ASSERT(errno != EBADF);
    }
    else if (events)
    {
       Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
          "monitor_2::run select event received events = %d, monitoring %d idle entries", events, _idleCount);
   
    
    try {
      _listeners.lock(pegasus_thread_self());
      temp = _listeners.next(0);
      while(temp != 0 ){
	  Sint32 fd = (Sint32) temp->get_sock();
	  if(fd >= 0 && FD_ISSET(fd, &rd_fd_set)) {
	  if(temp->get_type() != CLIENTSESSION) temp->set_state(BUSY);
	  FD_CLR(fd,  &rd_fd_set);
	  monitor_2_entry* ready = new monitor_2_entry(*temp);
	  try 
	  {
	     _ready.insert_first(ready);
	  }
	  catch(...)
	  {
	  }
	  
	  _requestCount++;
	}
	temp = _listeners.next(temp);
      }
      _listeners.unlock();
    } 
    catch(...){
      return;
    }
    // now handle the sockets that are ready to read 
    if(_ready.count())
       _dispatch();
    else
    {
       if(_connections.count() == 0 )
	  _idle_dispatch(_idle_parm);
    }
   }  // if events
  } // while alive 
  _die=0;

}

int  monitor_2::solicitSocketMessages(
    Sint32 socket,
    Uint32 events,
    Uint32 queueId,
    int type)
{

   PEG_METHOD_ENTER(TRC_HTTP, "monitor_2::solicitSocketMessages");

   _entry_mut.lock(pegasus_thread_self());

   for(int index = 0; index < (int)_entries.size(); index++)
   {
      try
      {
	 if(_entries[index]._status.value() == monitor_2_entry::EMPTY)
	 {
	    _entries[index].socket = socket;
	    //_entries[index].queueId  = queueId;
	    //_entries[index]._type = type;
	    _entries[index]._status = IDLE;
	    _entry_mut.unlock();

	    return index;
	 }
      }
      catch(...)
      {
      }

   }
   _entry_mut.unlock();
   PEG_METHOD_EXIT();
   return -1;
}


void monitor_2::unsolicitSocketMessages(Sint32 socket)
{

    PEG_METHOD_ENTER(TRC_HTTP, "monitor_2::unsolicitSocketMessages");
    _entry2_mut.lock(pegasus_thread_self());

    for(int index = 0; index < (int)_entries2.size(); index++)
    {
       if(_entries2[index].socket == socket)
       {
	  _entries2[index]._status = monitor_2_entry::EMPTY; 
	  _entries2[index].socket = -1;
	  break;
       }
    }
    _entry2_mut.unlock();
    PEG_METHOD_EXIT();
}

void* monitor_2::set_session_dispatch(void (*dp)(monitor_2_entry*))
{
  void* old = (void *)_session_dispatch;
  _session_dispatch = dp;
  return old;
}

void* monitor_2::set_accept_dispatch(void (*dp)(monitor_2_entry*))
{
  void* old = (void*)_accept_dispatch;
  _accept_dispatch = dp;
  return old;
}

void* monitor_2::set_idle_dispatch(void (*dp)(void*))
{
   void* old = (void*)_idle_dispatch;
   _idle_dispatch = dp;
   return old;
}

void* monitor_2::set_idle_parm(void* parm)
{
   void* old = _idle_parm;
   _idle_parm = parm;
   return old;
}



//-----------------------------------------------------------------
// Note on deleting the monitor_2_entry nodes: 
//  Each case: in the switch statement needs to handle the deletion 
//  of the monitor_2_entry * node differently. A SESSION dispatch 
//  routine MUST DELETE the entry during its dispatch handling. 
//  All other dispatch routines MUST NOT delete the entry during the 
//  dispatch handling, but must allow monitor_2::_dispatch to delete
//   the entry. 
//
//  The reason is pretty obscure and it is debatable whether or not
//  to even bother, but during cimserver shutdown the single monitor_2_entry* 
//  will leak unless the _session_dispatch routine takes care of deleting it. 
//
//  The reason is that a shutdown messages completely stops everything and 
//  the _session_dispatch routine never returns. So monitor_2::_dispatch is 
//  never able to do its own cleanup. 
//
// << Mon Oct 13 09:33:33 2003 mdd >>
//-----------------------------------------------------------------

void monitor_2::_dispatch(void)
{
   monitor_2_entry* entry;
   
   try 
   {

	 entry = _ready.remove_first();
   }
   catch(...)
   {
   }
   
  while(entry != 0 ) {
    switch(entry->get_type()) {
    case INTERNAL:
      static char buffer[2];
      entry->get_sock().disableBlocking();
      entry->get_sock().read(&buffer, 2);
      entry->get_sock().enableBlocking();
      entry->set_state(IDLE);   // Set state of the socket to IDLE so that 
                                // monitor_2::run can add to the list of FDs
                                // on which select would be called.

     
 
      delete entry;
      
      break;
    case LISTEN:
      {
	static struct sockaddr peer;
	static PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer);
	entry->get_sock().disableBlocking();
	pegasus_socket connected = entry->get_sock().accept(&peer, &peer_size);
        entry->set_state(IDLE);  // Set state of the LISTEN socket to IDLE
#ifdef PEGASUS_OS_TYPE_WINDOWS
    if((Sint32)connected  == SOCKET_ERROR)
#else
	if((Sint32)connected == -1 )
#endif
	{
	   delete entry;
	   break;
	}
	
	entry->get_sock().enableBlocking();
	monitor_2_entry *temp = add_entry(connected, SESSION, entry->get_accept(), entry->get_dispatch());
	if(temp && _accept_dispatch != 0)
	   _accept_dispatch(temp);
	delete entry;
	
      }
      break;
    case SESSION:
    case CLIENTSESSION:
       if(_session_dispatch != 0 )
       {
	  // NOTE: _session_dispatch will delete entry - do not do it here
	     unsigned client=0;
         if(entry->get_type() == CLIENTSESSION) client = 1;
         Sint32 sock=(Sint32)(entry->get_sock());
     
	     _session_dispatch(entry);

         if(client)
         {
           HTTPConnection2 *cn = monitor_2::remove_connection(sock);
	       if(cn) delete cn;
           // stop();
           _die=1;
         }
       }
       
      else {
	static char buffer[4096];
	int bytes = entry->get_sock().read(&buffer, 4096);
	delete entry;
      }
    
      break;
    case UNTYPED:
    default:
           delete entry;
      break;
    }
    _requestCount--;
    
    if(_ready.count() == 0 )
       break;
    
    try 
    {
       entry = _ready.remove_first();
    }
    catch(...)
    {
    }
    
  }
}

void monitor_2::stop(void)
{
  _die = 1;
  tickle();
  // shut down the listener list, free the list nodes
  _tickler.get_sock().close();
  _listeners.shutdown_queue();
}

void monitor_2::tickle(void)
{
  static char _buffer[] = 
    {
      '0','0'
    };
  
  _tickler.get_sock().disableBlocking();
  
  _tickler.get_sock().write(&_buffer, 2);
  _tickler.get_sock().enableBlocking();
  
}


monitor_2_entry*  monitor_2::add_entry(pegasus_socket& ps, 
				       monitor_2_entry_type type,
				       void* accept_parm, 
				       void* dispatch_parm)
{
  Sint32 fd1,fd2;

  fd2=(Sint32) ps;

  monitor_2_entry* m2e = new monitor_2_entry(ps, type, accept_parm, dispatch_parm);

// The purpose of the following piece of code is to avoid duplicate entries in
// the _listeners list. Would it be too much of an overhead ?
try {

     monitor_2_entry* temp;

      _listeners.lock(pegasus_thread_self());
      temp = _listeners.next(0);
      while(temp != 0 )
      {
        fd1=(Sint32) temp->get_sock();

        if(fd1 == fd2)
        {

           Tracer::trace(TRC_HTTP, Tracer::LEVEL3,
          "monitor_2::add_entry:Request for duplicate entry in _listeners for %d FD.", fd1);
            if(temp->get_state() == CLOSED)
            {
              temp->set_state(IDLE);
              Tracer::trace(TRC_HTTP, Tracer::LEVEL3,
              "monitor_2::add_entry:CLOSED state changed to IDLE for %d.", fd1);
             }
             _listeners.unlock();
            delete m2e;
            return 0;
        }
       temp = _listeners.next(temp);
      }
   } 
   catch(...) 
   {
      delete m2e;
      return 0;
   }


  _listeners.unlock();


  try{
    _listeners.insert_first(m2e);
  }
  catch(...){
    delete m2e;
    return 0;
  }
      Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
      "monitor_2::add_entry:SUCCESSFULLY added to _listeners list. FD = %d.", fd2);
  tickle();
  return m2e;
}

Boolean monitor_2::remove_entry(Sint32 s)
{
  monitor_2_entry* temp;
  try {
    _listeners.try_lock(pegasus_thread_self());
    temp = _listeners.next(0);
    while(temp != 0){
      if(s == (Sint32)temp->_rep->psock ){
	temp = _listeners.remove_no_lock(temp);
	delete temp;
	_listeners.unlock();
	return true;
      }
      temp = _listeners.next(temp);
    }
    _listeners.unlock();
  }
  catch(...){
  }
  return false;
}

Uint32 monitor_2::getOutstandingRequestCount(void)
{
  return _requestCount.value();
  
}


HTTPConnection2* monitor_2::remove_connection(Sint32 sock)
{

   HTTPConnection2* temp;
   try 
   {
      monitor_2::_connections.lock(pegasus_thread_self());
      temp = monitor_2::_connections.next(0);
      while(temp != 0 )
      {
	 if(sock == temp->getSocket())
	 {
	    temp = monitor_2::_connections.remove_no_lock(temp);
	    monitor_2::_connections.unlock();
	    return temp;
	 }
	 temp = monitor_2::_connections.next(temp);
      }
      monitor_2::_connections.unlock();
   }
   catch(...)
   {
   }
   return 0;
}

Boolean monitor_2::insert_connection(HTTPConnection2* connection)
{
   try 
   {
      monitor_2::_connections.insert_first(connection);
   }
   catch(...)
   {
      return false;
   }
   return true;
}


PEGASUS_NAMESPACE_END