1 karl 1.79 //%2004////////////////////////////////////////////////////////////////////////
|
2 mike 1.2 //
|
3 karl 1.79 // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
4 // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
5 // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
|
6 karl 1.64 // IBM Corp.; EMC Corporation, The Open Group.
|
7 karl 1.79 // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
8 // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
|
9 mike 1.2 //
10 // Permission is hereby granted, free of charge, to any person obtaining a copy
|
11 kumpf 1.17 // of this software and associated documentation files (the "Software"), to
12 // deal in the Software without restriction, including without limitation the
13 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
14 mike 1.2 // sell copies of the Software, and to permit persons to whom the Software is
15 // furnished to do so, subject to the following conditions:
|
16 r.kieninger 1.83 //
|
17 kumpf 1.17 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
|
18 mike 1.2 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
19 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
|
20 kumpf 1.17 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
21 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
22 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
23 mike 1.2 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 //
26 //==============================================================================
27 //
28 // Author: Mike Brasher (mbrasher@bmc.com)
29 //
|
30 r.kieninger 1.83 // Modified By: Mike Day (monitor_2) mdday@us.ibm.com
|
31 a.arora 1.71 // Amit K Arora (Bug#1153) amita@in.ibm.com
|
32 alagaraja 1.75 // Alagaraja Ramasubramanian (alags_raj@in.ibm.com) for Bug#1090
|
33 sushma.fernandes 1.78 // Sushma Fernandes (sushma@hp.com) for Bug#2057
|
34 joyce.j 1.84 // Josephine Eskaline Joyce (jojustin@in.ibm.com) for PEP#101
|
35 kumpf 1.85 // Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com)
|
36 mike 1.2 //
37 //%/////////////////////////////////////////////////////////////////////////////
38
39 #include <Pegasus/Common/Config.h>
|
40 mday 1.40
|
41 mike 1.2 #include <cstring>
42 #include "Monitor.h"
43 #include "MessageQueue.h"
44 #include "Socket.h"
|
45 kumpf 1.4 #include <Pegasus/Common/Tracer.h>
|
46 mday 1.7 #include <Pegasus/Common/HTTPConnection.h>
|
47 kumpf 1.69 #include <Pegasus/Common/MessageQueueService.h>
|
48 a.arora 1.73 #include <Pegasus/Common/Exception.h>
|
49 mike 1.2
50 #ifdef PEGASUS_OS_TYPE_WINDOWS
51 # if defined(FD_SETSIZE) && FD_SETSIZE != 1024
52 # error "FD_SETSIZE was not set to 1024 prior to the last inclusion \
53 of <winsock.h>. It may have been indirectly included (e.g., by including \
|
54 mday 1.25 <windows.h>). Finthe inclusion of that header which is visible to this \
|
55 mike 1.2 compilation unit and #define FD_SETZIE to 1024 prior to that inclusion; \
56 otherwise, less than 64 clients (the default) will be able to connect to the \
57 CIMOM. PLEASE DO NOT SUPPRESS THIS WARNING; PLEASE FIX THE PROBLEM."
|
58 mday 1.5
|
59 mike 1.2 # endif
60 # define FD_SETSIZE 1024
|
61 mday 1.5 # include <windows.h>
|
62 mike 1.2 #else
63 # include <sys/types.h>
64 # include <sys/socket.h>
65 # include <sys/time.h>
66 # include <netinet/in.h>
67 # include <netdb.h>
68 # include <arpa/inet.h>
69 #endif
70
71 PEGASUS_USING_STD;
72
73 PEGASUS_NAMESPACE_BEGIN
74
|
75 kumpf 1.86 // Define a platform-neutral socket length type
76 #if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM)
77 typedef size_t PEGASUS_SOCKLEN_T;
78 #elif defined(PEGASUS_PLATFORM_AIX_RS_IBMCXX) || defined(PEGASUS_OS_LINUX) || (defined(PEGASUS_OS_SOLARIS) && !defined(SUNOS_5_6))
79 typedef socklen_t PEGASUS_SOCKLEN_T;
80 #else
81 typedef int PEGASUS_SOCKLEN_T;
82 #endif
|
83 mday 1.18
|
84 mday 1.25 static AtomicInt _connections = 0;
85
86 static struct timeval create_time = {0, 1};
|
87 mday 1.38 static struct timeval destroy_time = {300, 0};
|
88 mday 1.26 static struct timeval deadlock_time = {0, 0};
|
89 mday 1.18
|
90 mike 1.2 ////////////////////////////////////////////////////////////////////////////////
91 //
92 // Monitor
93 //
94 ////////////////////////////////////////////////////////////////////////////////
95
|
96 kumpf 1.54 #define MAX_NUMBER_OF_MONITOR_ENTRIES 32
|
97 mike 1.2 Monitor::Monitor()
|
98 kumpf 1.87 : _stopConnections(0),
|
99 a.arora 1.73 _stopConnectionsSem(0),
|
100 a.dunfey 1.76 _solicitSocketCount(0),
|
101 a.dunfey 1.77 _tickle_client_socket(-1),
102 _tickle_server_socket(-1),
103 _tickle_peer_socket(-1)
|
104 mike 1.2 {
|
105 kumpf 1.54 int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES;
|
106 mike 1.2 Socket::initializeInterface();
|
107 kumpf 1.54 _entries.reserveCapacity(numberOfMonitorEntriesToAllocate);
|
108 a.arora 1.73
109 // setup the tickler
110 initializeTickler();
111
|
112 r.kieninger 1.83 // Start the count at 1 because initilizeTickler()
|
113 a.arora 1.73 // has added an entry in the first position of the
114 // _entries array
115 for( int i = 1; i < numberOfMonitorEntriesToAllocate; i++ )
|
116 mday 1.37 {
117 _MonitorEntry entry(0, 0, 0);
118 _entries.append(entry);
119 }
|
120 mday 1.18 }
|
121 mday 1.20
|
122 mike 1.2 Monitor::~Monitor()
123 {
|
124 kumpf 1.11 Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "uninitializing interface");
|
125 a.dunfey 1.76
126 try{
|
127 a.dunfey 1.77 if(_tickle_peer_socket >= 0)
|
128 a.dunfey 1.76 {
129 Socket::close(_tickle_peer_socket);
130 }
|
131 a.dunfey 1.77 if(_tickle_client_socket >= 0)
|
132 a.dunfey 1.76 {
133 Socket::close(_tickle_client_socket);
134 }
|
135 a.dunfey 1.77 if(_tickle_server_socket >= 0)
|
136 a.dunfey 1.76 {
137 Socket::close(_tickle_server_socket);
138 }
139 }
140 catch(...)
141 {
142 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
143 "Failed to close tickle sockets");
144 }
145
|
146 mike 1.2 Socket::uninitializeInterface();
|
147 kumpf 1.11 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
148 "returning from monitor destructor");
|
149 mday 1.18 }
150
|
151 a.arora 1.73 void Monitor::initializeTickler(){
|
152 r.kieninger 1.83 /*
153 NOTE: On any errors trying to
154 setup out tickle connection,
|
155 a.arora 1.73 throw an exception/end the server
156 */
157
158 /* setup the tickle server/listener */
159
160 // get a socket for the server side
161 if((_tickle_server_socket = ::socket(PF_INET, SOCK_STREAM, 0)) < 0){
162 //handle error
163 MessageLoaderParms parms("Common.Monitor.TICKLE_CREATE",
164 "Received error number $0 while creating the internal socket.",
165 #if !defined(PEGASUS_OS_TYPE_WINDOWS)
166 errno);
167 #else
168 WSAGetLastError());
169 #endif
170 throw Exception(parms);
171 }
172
173 // initialize the address
174 memset(&_tickle_server_addr, 0, sizeof(_tickle_server_addr));
175 #ifdef PEGASUS_OS_ZOS
176 a.arora 1.73 _tickle_server_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1");
177 #else
178 #ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
179 #pragma convert(37)
180 #endif
181 _tickle_server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
182 #ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
183 #pragma convert(0)
184 #endif
185 #endif
186 _tickle_server_addr.sin_family = PF_INET;
187 _tickle_server_addr.sin_port = 0;
188
|
189 kumpf 1.86 PEGASUS_SOCKLEN_T _addr_size = sizeof(_tickle_server_addr);
|
190 a.arora 1.73
191 // bind server side to socket
192 if((::bind(_tickle_server_socket,
|
193 kumpf 1.88 reinterpret_cast<struct sockaddr*>(&_tickle_server_addr),
|
194 a.arora 1.73 sizeof(_tickle_server_addr))) < 0){
195 // handle error
|
196 r.kieninger 1.83 #ifdef PEGASUS_OS_ZOS
197 MessageLoaderParms parms("Common.Monitor.TICKLE_BIND_LONG",
198 "Received error:$0 while binding the internal socket.",strerror(errno));
199 #else
|
200 a.arora 1.73 MessageLoaderParms parms("Common.Monitor.TICKLE_BIND",
201 "Received error number $0 while binding the internal socket.",
202 #if !defined(PEGASUS_OS_TYPE_WINDOWS)
203 errno);
204 #else
205 WSAGetLastError());
206 #endif
|
207 r.kieninger 1.83 #endif
|
208 a.arora 1.73 throw Exception(parms);
209 }
210
211 // tell the kernel we are a server
212 if((::listen(_tickle_server_socket,3)) < 0){
213 // handle error
214 MessageLoaderParms parms("Common.Monitor.TICKLE_LISTEN",
215 "Received error number $0 while listening to the internal socket.",
216 #if !defined(PEGASUS_OS_TYPE_WINDOWS)
217 errno);
218 #else
219 WSAGetLastError());
220 #endif
221 throw Exception(parms);
222 }
|
223 r.kieninger 1.83
|
224 a.arora 1.73 // make sure we have the correct socket for our server
225 int sock = ::getsockname(_tickle_server_socket,
|
226 kumpf 1.88 reinterpret_cast<struct sockaddr*>(&_tickle_server_addr),
227 &_addr_size);
|
228 a.arora 1.73 if(sock < 0){
229 // handle error
230 MessageLoaderParms parms("Common.Monitor.TICKLE_SOCKNAME",
231 "Received error number $0 while getting the internal socket name.",
232 #if !defined(PEGASUS_OS_TYPE_WINDOWS)
233 errno);
234 #else
235 WSAGetLastError());
236 #endif
237 throw Exception(parms);
238 }
239
240 /* set up the tickle client/connector */
|
241 r.kieninger 1.83
|
242 a.arora 1.73 // get a socket for our tickle client
243 if((_tickle_client_socket = ::socket(PF_INET, SOCK_STREAM, 0)) < 0){
244 // handle error
245 MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_CREATE",
246 "Received error number $0 while creating the internal client socket.",
247 #if !defined(PEGASUS_OS_TYPE_WINDOWS)
248 errno);
249 #else
250 WSAGetLastError());
251 #endif
252 throw Exception(parms);
253 }
254
255 // setup the address of the client
256 memset(&_tickle_client_addr, 0, sizeof(_tickle_client_addr));
257 #ifdef PEGASUS_OS_ZOS
258 _tickle_client_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1");
259 #else
260 #ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
261 #pragma convert(37)
262 #endif
263 a.arora 1.73 _tickle_client_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
264 #ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM
265 #pragma convert(0)
266 #endif
267 #endif
268 _tickle_client_addr.sin_family = PF_INET;
269 _tickle_client_addr.sin_port = 0;
270
271 // bind socket to client side
272 if((::bind(_tickle_client_socket,
|
273 kumpf 1.88 reinterpret_cast<struct sockaddr*>(&_tickle_client_addr),
|
274 a.arora 1.73 sizeof(_tickle_client_addr))) < 0){
275 // handle error
276 MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_BIND",
277 "Received error number $0 while binding the internal client socket.",
278 #if !defined(PEGASUS_OS_TYPE_WINDOWS)
279 errno);
280 #else
281 WSAGetLastError());
282 #endif
283 throw Exception(parms);
284 }
285
286 // connect to server side
287 if((::connect(_tickle_client_socket,
|
288 kumpf 1.88 reinterpret_cast<struct sockaddr*>(&_tickle_server_addr),
|
289 a.arora 1.73 sizeof(_tickle_server_addr))) < 0){
290 // handle error
291 MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_CONNECT",
292 "Received error number $0 while connecting the internal client socket.",
293 #if !defined(PEGASUS_OS_TYPE_WINDOWS)
294 errno);
295 #else
296 WSAGetLastError());
297 #endif
298 throw Exception(parms);
299 }
300
301 /* set up the slave connection */
302 memset(&_tickle_peer_addr, 0, sizeof(_tickle_peer_addr));
|
303 kumpf 1.86 PEGASUS_SOCKLEN_T peer_size = sizeof(_tickle_peer_addr);
|
304 r.kieninger 1.83 pegasus_sleep(1);
|
305 a.arora 1.73
306 // this call may fail, we will try a max of 20 times to establish this peer connection
307 if((_tickle_peer_socket = ::accept(_tickle_server_socket,
|
308 kumpf 1.88 reinterpret_cast<struct sockaddr*>(&_tickle_peer_addr),
309 &peer_size)) < 0){
|
310 a.arora 1.73 #if !defined(PEGASUS_OS_TYPE_WINDOWS)
311 // Only retry on non-windows platforms.
312 if(_tickle_peer_socket == -1 && errno == EAGAIN)
313 {
|
314 r.kieninger 1.83 int retries = 0;
|
315 a.arora 1.73 do
316 {
317 pegasus_sleep(1);
318 _tickle_peer_socket = ::accept(_tickle_server_socket,
|
319 kumpf 1.88 reinterpret_cast<struct sockaddr*>(&_tickle_peer_addr),
320 &peer_size);
|
321 a.arora 1.73 retries++;
322 } while(_tickle_peer_socket == -1 && errno == EAGAIN && retries < 20);
323 }
324 #endif
325 }
326 if(_tickle_peer_socket == -1){
327 // handle error
328 MessageLoaderParms parms("Common.Monitor.TICKLE_ACCEPT",
329 "Received error number $0 while accepting the internal socket connection.",
330 #if !defined(PEGASUS_OS_TYPE_WINDOWS)
331 errno);
332 #else
333 WSAGetLastError());
334 #endif
335 throw Exception(parms);
336 }
337 // add the tickler to the list of entries to be monitored and set to IDLE because Monitor only
338 // checks entries with IDLE state for events
339 _MonitorEntry entry(_tickle_peer_socket, 1, INTERNAL);
340 entry._status = _MonitorEntry::IDLE;
341 _entries.append(entry);
342 a.arora 1.73 }
343
344 void Monitor::tickle(void)
345 {
|
346 sushma.fernandes 1.78 static char _buffer[] =
|
347 a.arora 1.73 {
348 '0','0'
349 };
|
350 r.kieninger 1.83
|
351 sushma.fernandes 1.78 AutoMutex autoMutex(_tickle_mutex);
|
352 r.kieninger 1.83 Socket::disableBlocking(_tickle_client_socket);
|
353 sushma.fernandes 1.78 Socket::write(_tickle_client_socket,&_buffer, 2);
|
354 r.kieninger 1.83 Socket::enableBlocking(_tickle_client_socket);
|
355 sushma.fernandes 1.78 }
356
357 void Monitor::setState( Uint32 index, _MonitorEntry::entry_status status )
358 {
359 // Set the state to requested state
360 _entries[index]._status = status;
|
361 a.arora 1.73 }
362
|
363 mike 1.2 Boolean Monitor::run(Uint32 milliseconds)
364 {
|
365 mday 1.18
|
366 mday 1.25 Boolean handled_events = false;
|
367 a.arora 1.73 int i = 0;
|
368 r.kieninger 1.83
|
369 kumpf 1.36 struct timeval tv = {milliseconds/1000, milliseconds%1000*1000};
|
370 a.arora 1.73
|
371 mday 1.25 fd_set fdread;
372 FD_ZERO(&fdread);
|
373 a.arora 1.73
|
374 mday 1.37 _entry_mut.lock(pegasus_thread_self());
|
375 r.kieninger 1.83
376 // Check the stopConnections flag. If set, clear the Acceptor monitor entries
377 if (_stopConnections == 1)
|
378 kumpf 1.48 {
379 for ( int indx = 0; indx < (int)_entries.size(); indx++)
380 {
381 if (_entries[indx]._type == Monitor::ACCEPTOR)
382 {
383 if ( _entries[indx]._status.value() != _MonitorEntry::EMPTY)
384 {
385 if ( _entries[indx]._status.value() == _MonitorEntry::IDLE ||
386 _entries[indx]._status.value() == _MonitorEntry::DYING )
387 {
388 // remove the entry
389 _entries[indx]._status = _MonitorEntry::EMPTY;
390 }
391 else
392 {
393 // set status to DYING
|
394 kumpf 1.52 _entries[indx]._status = _MonitorEntry::DYING;
|
395 kumpf 1.48 }
396 }
397 }
398 }
399 _stopConnections = 0;
|
400 a.arora 1.73 _stopConnectionsSem.signal();
|
401 kumpf 1.48 }
|
402 kumpf 1.51
|
403 kumpf 1.68 for( int indx = 0; indx < (int)_entries.size(); indx++)
404 {
|
405 brian.campbell 1.80 const _MonitorEntry &entry = _entries[indx];
406 if ((entry._status.value() == _MonitorEntry::DYING) &&
407 (entry._type == Monitor::CONNECTION))
|
408 kumpf 1.68 {
|
409 brian.campbell 1.80 MessageQueue *q = MessageQueue::lookup(entry.queueId);
|
410 kumpf 1.68 PEGASUS_ASSERT(q != 0);
|
411 brian.campbell 1.80 HTTPConnection &h = *static_cast<HTTPConnection *>(q);
|
412 r.kieninger 1.83
|
413 brian.campbell 1.80 if (h._connectionClosePending == false)
414 continue;
415
416 // NOTE: do not attempt to delete while there are pending responses
|
417 r.kieninger 1.83 // coming thru. The last response to come thru after a
|
418 brian.campbell 1.80 // _connectionClosePending will reset _responsePending to false
419 // and then cause the monitor to rerun this code and clean up.
420 // (see HTTPConnection.cpp)
421
422 if (h._responsePending == true)
423 {
424 Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "Monitor::run - "
425 "Ignoring connection delete request because "
426 "responses are still pending. "
|
427 r.kieninger 1.83 "connection=0x%p, socket=%d\n",
|
428 brian.campbell 1.81 (void *)&h, h.getSocket());
|
429 brian.campbell 1.80 continue;
430 }
431 h._connectionClosePending = false;
432 MessageQueue &o = h.get_owner();
433 Message* message= new CloseConnectionMessage(entry.socket);
|
434 kumpf 1.68 message->dest = o.getQueueId();
435
|
436 r.kieninger 1.83 // HTTPAcceptor is responsible for closing the connection.
|
437 kumpf 1.68 // The lock is released to allow HTTPAcceptor to call
|
438 r.kieninger 1.83 // unsolicitSocketMessages to free the entry.
|
439 kumpf 1.68 // Once HTTPAcceptor completes processing of the close
440 // connection, the lock is re-requested and processing of
441 // the for loop continues. This is safe with the current
442 // implementation of the _entries object. Note that the
443 // loop condition accesses the _entries.size() on each
444 // iteration, so that a change in size while the mutex is
445 // unlocked will not result in an ArrayIndexOutOfBounds
446 // exception.
447
448 _entry_mut.unlock();
449 o.enqueue(message);
450 _entry_mut.lock(pegasus_thread_self());
451 }
452 }
453
|
454 kumpf 1.51 Uint32 _idleEntries = 0;
|
455 r.kieninger 1.83
|
456 a.arora 1.73 /*
457 We will keep track of the maximum socket number and pass this value
|
458 r.kieninger 1.83 to the kernel as a parameter to SELECT. This loop seems like a good
|
459 a.arora 1.73 place to calculate the max file descriptor (maximum socket number)
460 because we have to traverse the entire array.
|
461 r.kieninger 1.83 */
|
462 a.arora 1.73 int maxSocketCurrentPass = 0;
|
463 mday 1.25 for( int indx = 0; indx < (int)_entries.size(); indx++)
|
464 mike 1.2 {
|
465 a.arora 1.73 if(maxSocketCurrentPass < _entries[indx].socket)
466 maxSocketCurrentPass = _entries[indx].socket;
467
|
468 mday 1.37 if(_entries[indx]._status.value() == _MonitorEntry::IDLE)
|
469 mday 1.25 {
|
470 kumpf 1.51 _idleEntries++;
|
471 mday 1.25 FD_SET(_entries[indx].socket, &fdread);
472 }
|
473 mday 1.13 }
|
474 s.hills 1.62
|
475 a.arora 1.73 /*
476 Add 1 then assign maxSocket accordingly. We add 1 to account for
477 descriptors starting at 0.
478 */
479 maxSocketCurrentPass++;
480
|
481 r.kieninger 1.83 _entry_mut.unlock();
|
482 a.arora 1.73 int events = select(maxSocketCurrentPass, &fdread, NULL, NULL, &tv);
|
483 kumpf 1.51 _entry_mut.lock(pegasus_thread_self());
|
484 mday 1.25
|
485 mike 1.2 #ifdef PEGASUS_OS_TYPE_WINDOWS
|
486 kumpf 1.50 if(events == SOCKET_ERROR)
|
487 mike 1.2 #else
|
488 kumpf 1.50 if(events == -1)
|
489 mike 1.2 #endif
|
490 mday 1.13 {
|
491 kumpf 1.50 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
492 "Monitor::run - errorno = %d has occurred on select.", errno);
493 // The EBADF error indicates that one or more or the file
494 // descriptions was not valid. This could indicate that
495 // the _entries structure has been corrupted or that
496 // we have a synchronization error.
497
498 PEGASUS_ASSERT(errno != EBADF);
499 }
500 else if (events)
501 {
|
502 kumpf 1.51 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
|
503 r.kieninger 1.83 "Monitor::run select event received events = %d, monitoring %d idle entries",
|
504 kumpf 1.51 events, _idleEntries);
|
505 mday 1.25 for( int indx = 0; indx < (int)_entries.size(); indx++)
506 {
|
507 kumpf 1.53 // The Monitor should only look at entries in the table that are IDLE (i.e.,
508 // owned by the Monitor).
|
509 r.kieninger 1.83 if((_entries[indx]._status.value() == _MonitorEntry::IDLE) &&
|
510 kumpf 1.53 (FD_ISSET(_entries[indx].socket, &fdread)))
|
511 mday 1.25 {
512 MessageQueue *q = MessageQueue::lookup(_entries[indx].queueId);
|
513 kumpf 1.53 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
514 "Monitor::run indx = %d, queueId = %d, q = %p",
515 indx, _entries[indx].queueId, q);
516 PEGASUS_ASSERT(q !=0);
|
517 mday 1.37
|
518 r.kieninger 1.83 try
|
519 mday 1.25 {
|
520 mday 1.37 if(_entries[indx]._type == Monitor::CONNECTION)
521 {
|
522 kumpf 1.51 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
523 "_entries[indx].type for indx = %d is Monitor::CONNECTION", indx);
|
524 mday 1.37 static_cast<HTTPConnection *>(q)->_entry_index = indx;
|
525 sushma.fernandes 1.78
526 // Do not update the entry just yet. The entry gets updated once
|
527 r.kieninger 1.83 // the request has been read.
|
528 sushma.fernandes 1.78 //_entries[indx]._status = _MonitorEntry::BUSY;
529
|
530 kumpf 1.66 // If allocate_and_awaken failure, retry on next iteration
|
531 a.arora 1.73 /* Removed for PEP 183.
|
532 kumpf 1.69 if (!MessageQueueService::get_thread_pool()->allocate_and_awaken(
533 (void *)q, _dispatch))
|
534 kumpf 1.67 {
535 Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,
536 "Monitor::run: Insufficient resources to process request.");
537 _entries[indx]._status = _MonitorEntry::IDLE;
538 _entry_mut.unlock();
539 return true;
540 }
|
541 a.arora 1.73 */
542 // Added for PEP 183
543 HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(q);
544 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
545 "Monitor::_dispatch: entering run() for indx = %d, queueId = %d, q = %p",
546 dst->_entry_index, dst->_monitor->_entries[dst->_entry_index].queueId, dst);
547 try
548 {
549 dst->run(1);
550 }
551 catch (...)
552 {
553 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
554 "Monitor::_dispatch: exception received");
555 }
556 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
557 "Monitor::_dispatch: exited run() for index %d", dst->_entry_index);
558
|
559 sushma.fernandes 1.78 // It is possible the entry status may not be set to busy.
|
560 r.kieninger 1.83 // The following will fail in that case.
561 // PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.value() == _MonitorEntry::BUSY);
|
562 a.arora 1.73 // Once the HTTPConnection thread has set the status value to either
563 // Monitor::DYING or Monitor::IDLE, it has returned control of the connection
564 // to the Monitor. It is no longer permissible to access the connection
565 // or the entry in the _entries table.
|
566 sushma.fernandes 1.78
567 // The following is not relevant as the worker thread or the
568 // reader thread will update the status of the entry.
569 //if (dst->_connectionClosePending)
|
570 r.kieninger 1.83 //{
|
571 sushma.fernandes 1.78 // dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING;
572 //}
573 //else
574 //{
575 // dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE;
|
576 r.kieninger 1.83 //}
577 // end Added for PEP 183
|
578 a.arora 1.73 }
579 else if( _entries[indx]._type == Monitor::INTERNAL){
|
580 r.kieninger 1.83 // set ourself to BUSY,
581 // read the data
|
582 a.arora 1.73 // and set ourself back to IDLE
|
583 r.kieninger 1.83
|
584 a.arora 1.73 _entries[indx]._status == _MonitorEntry::BUSY;
585 static char buffer[2];
586 Socket::disableBlocking(_entries[indx].socket);
587 Sint32 amt = Socket::read(_entries[indx].socket,&buffer, 2);
588 Socket::enableBlocking(_entries[indx].socket);
589 _entries[indx]._status == _MonitorEntry::IDLE;
|
590 mday 1.37 }
591 else
|
592 mday 1.25 {
|
593 kumpf 1.51 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
594 "Non-connection entry, indx = %d, has been received.", indx);
|
595 mday 1.37 int events = 0;
596 events |= SocketMessage::READ;
597 Message *msg = new SocketMessage(_entries[indx].socket, events);
598 _entries[indx]._status = _MonitorEntry::BUSY;
599 _entry_mut.unlock();
|
600 mday 1.27
|
601 mday 1.37 q->enqueue(msg);
602 _entries[indx]._status = _MonitorEntry::IDLE;
|
603 mday 1.25 return true;
604 }
605 }
|
606 mday 1.37 catch(...)
|
607 mday 1.25 {
608 }
609 handled_events = true;
610 }
611 }
|
612 mday 1.24 }
|
613 mday 1.37 _entry_mut.unlock();
|
614 mday 1.13 return(handled_events);
|
615 mike 1.2 }
616
|
617 chuck 1.74 void Monitor::stopListeningForConnections(Boolean wait)
|
618 kumpf 1.48 {
619 PEG_METHOD_ENTER(TRC_HTTP, "Monitor::stopListeningForConnections()");
|
620 r.kieninger 1.83 // set boolean then tickle the server to recognize _stopConnections
|
621 kumpf 1.48 _stopConnections = 1;
|
622 a.arora 1.73 tickle();
|
623 kumpf 1.48
|
624 chuck 1.74 if (wait)
|
625 a.arora 1.73 {
|
626 chuck 1.74 // Wait for the monitor to notice _stopConnections. Otherwise the
627 // caller of this function may unbind the ports while the monitor
628 // is still accepting connections on them.
629 try
630 {
631 _stopConnectionsSem.time_wait(10000);
632 }
633 catch (TimeOut &)
634 {
635 // The monitor is probably busy processng a very long request, and is
636 // not accepting connections. Let the caller unbind the ports.
637 }
|
638 a.arora 1.73 }
|
639 r.kieninger 1.83
|
640 kumpf 1.48 PEG_METHOD_EXIT();
641 }
|
642 mday 1.25
|
643 mday 1.37
|
644 mday 1.25 int Monitor::solicitSocketMessages(
|
645 r.kieninger 1.83 Sint32 socket,
|
646 mike 1.2 Uint32 events,
|
647 r.kieninger 1.83 Uint32 queueId,
|
648 mday 1.8 int type)
|
649 mike 1.2 {
|
650 r.kieninger 1.83 PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solicitSocketMessages");
|
651 alagaraja 1.75 AutoMutex autoMut(_entry_mut);
|
652 a.arora 1.73 // Check to see if we need to dynamically grow the _entries array
653 // We always want the _entries array to 2 bigger than the
654 // current connections requested
655 _solicitSocketCount++; // bump the count
656 int size = (int)_entries.size();
657 if(_solicitSocketCount >= (size-1)){
658 for(int i = 0; i < (_solicitSocketCount - (size-1)); i++){
659 _MonitorEntry entry(0, 0, 0);
660 _entries.append(entry);
661 }
662 }
|
663 kumpf 1.4
|
664 a.arora 1.73 int index;
665 for(index = 1; index < (int)_entries.size(); index++)
|
666 mday 1.25 {
|
667 a.arora 1.73 try
|
668 mday 1.37 {
|
669 a.arora 1.73 if(_entries[index]._status.value() == _MonitorEntry::EMPTY)
670 {
671 _entries[index].socket = socket;
672 _entries[index].queueId = queueId;
673 _entries[index]._type = type;
674 _entries[index]._status = _MonitorEntry::IDLE;
|
675 r.kieninger 1.83
|
676 a.arora 1.73 return index;
677 }
|
678 mday 1.37 }
679 catch(...)
|
680 mday 1.25 {
681 }
682 }
|
683 a.arora 1.73 _solicitSocketCount--; // decrease the count, if we are here we didnt do anything meaningful
|
684 mday 1.25 PEG_METHOD_EXIT();
|
685 kumpf 1.50 return -1;
|
686 a.arora 1.73
|
687 mike 1.2 }
688
|
689 mday 1.25 void Monitor::unsolicitSocketMessages(Sint32 socket)
|
690 mike 1.2 {
|
691 kumpf 1.50
|
692 mday 1.25 PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages");
|
693 alagaraja 1.75 AutoMutex autoMut(_entry_mut);
|
694 a.arora 1.73
695 /*
696 Start at index = 1 because _entries[0] is the tickle entry which never needs
697 to be EMPTY;
698 */
699 int index;
700 for(index = 1; index < _entries.size(); index++)
|
701 mike 1.2 {
|
702 mday 1.25 if(_entries[index].socket == socket)
703 {
|
704 a.arora 1.73 _entries[index]._status = _MonitorEntry::EMPTY;
705 _entries[index].socket = -1;
706 _solicitSocketCount--;
707 break;
|
708 mday 1.25 }
|
709 mike 1.2 }
|
710 a.arora 1.73
711 /*
712 Dynamic Contraction:
713 To remove excess entries we will start from the end of the _entries array
714 and remove all entries with EMPTY status until we find the first NON EMPTY.
715 This prevents the positions, of the NON EMPTY entries, from being changed.
|
716 r.kieninger 1.83 */
|
717 a.arora 1.73 index = _entries.size() - 1;
718 while(_entries[index]._status == _MonitorEntry::EMPTY){
719 if(_entries.size() > MAX_NUMBER_OF_MONITOR_ENTRIES)
720 _entries.remove(index);
721 index--;
722 }
723
|
724 kumpf 1.4 PEG_METHOD_EXIT();
|
725 mike 1.2 }
726
|
727 a.arora 1.73 // Note: this is no longer called with PEP 183.
|
728 mday 1.7 PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm)
729 {
|
730 mday 1.8 HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(parm);
|
731 kumpf 1.51 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
|
732 kumpf 1.53 "Monitor::_dispatch: entering run() for indx = %d, queueId = %d, q = %p",
733 dst->_entry_index, dst->_monitor->_entries[dst->_entry_index].queueId, dst);
|
734 kumpf 1.51 try
735 {
736 dst->run(1);
737 }
738 catch (...)
739 {
740 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
741 "Monitor::_dispatch: exception received");
742 }
743 Tracer::trace(TRC_HTTP, Tracer::LEVEL4,
744 "Monitor::_dispatch: exited run() for index %d", dst->_entry_index);
|
745 r.kieninger 1.83
|
746 kumpf 1.53 PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.value() == _MonitorEntry::BUSY);
|
747 kumpf 1.68
748 // Once the HTTPConnection thread has set the status value to either
749 // Monitor::DYING or Monitor::IDLE, it has returned control of the connection
750 // to the Monitor. It is no longer permissible to access the connection
751 // or the entry in the _entries table.
|
752 kumpf 1.50 if (dst->_connectionClosePending)
753 {
|
754 kumpf 1.68 dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING;
755 }
756 else
757 {
758 dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE;
|
759 kumpf 1.50 }
|
760 mday 1.8 return 0;
|
761 mday 1.40 }
762
|
763 mike 1.2 PEGASUS_NAMESPACE_END
|
Return to
Monitor.cpp
CVS log
Up to [Pegasus] / pegasus / src / Pegasus / Common