1 /* Coordinator => Machine that initiates the transaction request call for commiting a transaction
2 * Participant => Machines that host the objects involved in a transaction commit */
4 #include <netinet/tcp.h>
8 #include "threadnotify.h"
13 #define BACKLOG 10 //max pending connections
14 #define RECEIVE_BUFFER_SIZE 2048
16 extern int classsize[];
17 extern int numHostsInSystem;
18 extern pthread_mutex_t notifymutex;
20 objstr_t *mainobjstore;
21 pthread_mutex_t mainobjstore_mutex;
22 pthread_mutex_t lockObjHeader;
23 pthread_mutexattr_t mainobjstore_mutex_attr; /* Attribute for lock to make it a recursive lock */
25 sockPoolHashTable_t *transPResponseSocketPool;
27 /* This function initializes the main objects store and creates the
28 * global machine and location lookup table */
32 mainobjstore = objstrCreate(DEFAULT_OBJ_STORE_SIZE);
33 /* Initialize attribute for mutex */
34 pthread_mutexattr_init(&mainobjstore_mutex_attr);
35 pthread_mutexattr_settype(&mainobjstore_mutex_attr, PTHREAD_MUTEX_RECURSIVE_NP);
36 pthread_mutex_init(&mainobjstore_mutex, &mainobjstore_mutex_attr);
37 pthread_mutex_init(&lockObjHeader,NULL);
38 if (mhashCreate(HASH_SIZE, LOADFACTOR))
41 if (lhashCreate(HASH_SIZE, LOADFACTOR))
44 if (notifyhashCreate(N_HASH_SIZE, N_LOADFACTOR))
47 //Initialize socket pool
48 if((transPResponseSocketPool = createSockPool(transPResponseSocketPool, 2*numHostsInSystem+1)) == NULL) {
49 printf("Error in creating new socket pool at %s line %d\n", __FILE__, __LINE__);
57 int startlistening() {
59 struct sockaddr_in my_addr;
60 socklen_t addrlength = sizeof(struct sockaddr);
63 listenfd = socket(AF_INET, SOCK_STREAM, 0);
69 if (setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &setsockflag, sizeof (setsockflag)) < 0) {
74 if (setsockopt(listenfd, SOL_SOCKET, SO_NOSIGPIPE, &setsockflag, sizeof (setsockflag)) < 0) {
80 my_addr.sin_family = AF_INET;
81 my_addr.sin_port = htons(LISTEN_PORT);
82 my_addr.sin_addr.s_addr = INADDR_ANY;
83 memset(&(my_addr.sin_zero), '\0', 8);
85 if (bind(listenfd, (struct sockaddr *)&my_addr, addrlength) == -1) {
90 if (listen(listenfd, BACKLOG) == -1) {
97 /* This function starts the thread to listen on a socket
98 * for tranaction calls */
99 void *dstmListen(void *lfd) {
100 int listenfd=(int)lfd;
102 struct sockaddr_in client_addr;
103 socklen_t addrlength = sizeof(struct sockaddr);
104 pthread_t thread_dstm_accept;
106 printf("Listening on port %d, fd = %d\n", LISTEN_PORT, listenfd);
110 acceptfd = accept(listenfd, (struct sockaddr *)&client_addr, &addrlength);
111 setsockopt(acceptfd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(flag));
113 retval=pthread_create(&thread_dstm_accept, NULL, dstmAccept, (void *)acceptfd);
115 pthread_detach(thread_dstm_accept);
118 /* This function accepts a new connection request, decodes the control message in the connection
119 * and accordingly calls other functions to process new requests */
120 void *dstmAccept(void *acceptfd) {
121 int val, retval, size, sum, sockid;
128 trans_commit_data_t transinfo;
129 unsigned short objType, *versionarry, version;
130 unsigned int *oidarry, numoid, mid, threadid;
132 /* Receive control messages from other machines */
134 int ret=recv_data_errorcode((int)acceptfd, &control, sizeof(char));
138 printf("DEBUG -> RECV Error!.. retrying\n");
143 /* Read oid requested and search if available */
144 recv_data((int)acceptfd, &oid, sizeof(unsigned int));
145 if((srcObj = mhashSearch(oid)) == NULL) {
146 printf("Error: Object 0x%x is not found in Main Object Store %s, %d\n", oid, __FILE__, __LINE__);
149 h = (objheader_t *) srcObj;
151 size += sizeof(objheader_t);
152 sockid = (int) acceptfd;
155 ctrl = OBJECT_NOT_FOUND;
156 send_data(sockid, &ctrl, sizeof(char));
159 char msg[]={OBJECT_FOUND, 0, 0, 0, 0};
160 *((int *)&msg[1])=size;
161 send_data(sockid, &msg, sizeof(msg));
162 send_data(sockid, h, size);
166 case READ_MULT_REQUEST:
172 case MOVE_MULT_REQUEST:
176 /* Read transaction request */
177 transinfo.objlocked = NULL;
178 transinfo.objnotfound = NULL;
179 transinfo.modptr = NULL;
180 transinfo.numlocked = 0;
181 transinfo.numnotfound = 0;
182 if((val = readClientReq(&transinfo, (int)acceptfd)) != 0) {
183 printf("Error: In readClientReq() %s, %d\n", __FILE__, __LINE__);
188 if((val = prefetchReq((int)acceptfd)) != 0) {
189 printf("Error: In prefetchReq() %s, %d\n", __FILE__, __LINE__);
193 case TRANS_PREFETCH_RESPONSE:
194 if((val = getPrefetchResponse((int) acceptfd)) != 0) {
195 printf("Error: In getPrefetchResponse() %s, %d\n", __FILE__, __LINE__);
199 case START_REMOTE_THREAD:
200 recv_data((int)acceptfd, &oid, sizeof(unsigned int));
201 objType = getObjType(oid);
202 startDSMthread(oid, objType);
205 case THREAD_NOTIFY_REQUEST:
206 recv_data((int)acceptfd, &numoid, sizeof(unsigned int));
207 size = (sizeof(unsigned int) + sizeof(unsigned short)) * numoid + 2 * sizeof(unsigned int);
208 if((buffer = calloc(1,size)) == NULL) {
209 printf("%s() Calloc error at %s, %d\n", __func__, __FILE__, __LINE__);
213 recv_data((int)acceptfd, buffer, size);
215 oidarry = calloc(numoid, sizeof(unsigned int));
216 memcpy(oidarry, buffer, sizeof(unsigned int) * numoid);
217 size = sizeof(unsigned int) * numoid;
218 versionarry = calloc(numoid, sizeof(unsigned short));
219 memcpy(versionarry, buffer+size, sizeof(unsigned short) * numoid);
220 size += sizeof(unsigned short) * numoid;
221 mid = *((unsigned int *)(buffer+size));
222 size += sizeof(unsigned int);
223 threadid = *((unsigned int *)(buffer+size));
224 processReqNotify(numoid, oidarry, versionarry, mid, threadid);
229 case THREAD_NOTIFY_RESPONSE:
230 size = sizeof(unsigned short) + 2 * sizeof(unsigned int);
231 if((buffer = calloc(1,size)) == NULL) {
232 printf("%s() Calloc error at %s, %d\n", __func__, __FILE__, __LINE__);
236 recv_data((int)acceptfd, buffer, size);
238 oid = *((unsigned int *)buffer);
239 size = sizeof(unsigned int);
240 version = *((unsigned short *)(buffer+size));
241 size += sizeof(unsigned short);
242 threadid = *((unsigned int *)(buffer+size));
243 threadNotify(oid,version,threadid);
247 case CLOSE_CONNECTION:
248 goto closeconnection;
251 printf("Error: dstmAccept() Unknown opcode %d at %s, %d\n", control, __FILE__, __LINE__);
256 /* Close connection */
257 if (close((int)acceptfd) == -1)
262 /* This function reads the information available in a transaction request
263 * and makes a function call to process the request */
264 int readClientReq(trans_commit_data_t *transinfo, int acceptfd) {
267 unsigned int *oidmod, oid;
269 objheader_t *headaddr;
270 int sum, i, size, n, val;
274 /* Read fixed_data_t data structure */
275 size = sizeof(fixed) - 1;
276 ptr = (char *)&fixed;;
277 fixed.control = TRANS_REQUEST;
278 recv_data((int)acceptfd, ptr+1, size);
280 /* Read list of mids */
281 int mcount = fixed.mcount;
282 size = mcount * sizeof(unsigned int);
283 unsigned int listmid[mcount];
284 ptr = (char *) listmid;
285 recv_data((int)acceptfd, ptr, size);
287 /* Read oid and version tuples for those objects that are not modified in the transaction */
288 int numread = fixed.numread;
289 size = numread * (sizeof(unsigned int) + sizeof(unsigned short));
291 if(numread != 0) { //If pile contains more than one object to be read,
292 // keep reading all objects
293 recv_data((int)acceptfd, objread, size);
296 /* Read modified objects */
297 if(fixed.nummod != 0) {
298 if ((modptr = calloc(1, fixed.sum_bytes)) == NULL) {
299 printf("calloc error for modified objects %s, %d\n", __FILE__, __LINE__);
302 size = fixed.sum_bytes;
303 recv_data((int)acceptfd, modptr, size);
306 /* Create an array of oids for modified objects */
307 oidmod = (unsigned int *) calloc(fixed.nummod, sizeof(unsigned int));
310 printf("calloc error %s, %d\n", __FILE__, __LINE__);
313 ptr = (char *) modptr;
314 for(i = 0 ; i < fixed.nummod; i++) {
316 headaddr = (objheader_t *) ptr;
319 GETSIZE(tmpsize, headaddr);
320 ptr += sizeof(objheader_t) + tmpsize;
323 /*Process the information read */
324 if((val = processClientReq(&fixed, transinfo, listmid, objread, modptr, oidmod, acceptfd)) != 0) {
325 printf("Error: In processClientReq() %s, %d\n", __FILE__, __LINE__);
341 /* This function processes the Coordinator's transaction request using "handleTransReq"
342 * function and sends a reply to the co-ordinator.
343 * Following this it also receives a new control message from the co-ordinator and processes this message*/
344 int processClientReq(fixed_data_t *fixed, trans_commit_data_t *transinfo,
345 unsigned int *listmid, char *objread, void *modptr, unsigned int *oidmod, int acceptfd) {
346 char control, sendctrl, retval;
347 objheader_t *tmp_header;
351 /* Send reply to the Coordinator */
352 if((retval = handleTransReq(fixed, transinfo, listmid, objread, modptr,acceptfd)) == 0 ) {
353 printf("Error: In handleTransReq() %s, %d\n", __FILE__, __LINE__);
357 recv_data((int)acceptfd, &control, sizeof(char));
359 /* Process the new control message */
362 if (fixed->nummod > 0)
364 /* Unlock objects that was locked due to this transaction */
365 for(i = 0; i< transinfo->numlocked; i++) {
366 if((header = mhashSearch(transinfo->objlocked[i])) == NULL) {
367 printf("mhashSearch returns NULL at %s, %d\n", __FILE__, __LINE__);// find the header address
370 UnLock(STATUSPTR(header));
373 /* Send ack to Coordinator */
374 sendctrl = TRANS_UNSUCESSFUL;
375 send_data((int)acceptfd, &sendctrl, sizeof(char));
379 /* Invoke the transCommit process() */
380 if((val = transCommitProcess(modptr, oidmod, transinfo->objlocked, fixed->nummod, transinfo->numlocked, (int)acceptfd)) != 0) {
381 printf("Error: In transCommitProcess() %s, %d\n", __FILE__, __LINE__);
383 if (transinfo->objlocked != NULL) {
384 free(transinfo->objlocked);
386 if (transinfo->objnotfound != NULL) {
387 free(transinfo->objnotfound);
393 case TRANS_ABORT_BUT_RETRY_COMMIT_WITH_RELOCATING:
396 printf("Error: No response to TRANS_AGREE OR DISAGREE protocol %s, %d\n", __FILE__, __LINE__);
397 //TODO Use fixed.trans_id TID since Client may have died
402 if (transinfo->objlocked != NULL) {
403 free(transinfo->objlocked);
405 if (transinfo->objnotfound != NULL) {
406 free(transinfo->objnotfound);
412 /* This function increments counters while running a voting decision on all objects involved
413 * in TRANS_REQUEST and If a TRANS_DISAGREE sends the response immediately back to the coordinator */
414 char handleTransReq(fixed_data_t *fixed, trans_commit_data_t *transinfo, unsigned int *listmid, char *objread, void *modptr, int acceptfd) {
416 unsigned short version;
417 char control = 0, *ptr;
419 unsigned int *oidnotfound, *oidlocked;
421 objheader_t *headptr;
423 /* Counters and arrays to formulate decision on control message to be sent */
424 oidnotfound = (unsigned int *) calloc(fixed->numread + fixed->nummod, sizeof(unsigned int));
425 oidlocked = (unsigned int *) calloc(fixed->numread + fixed->nummod, sizeof(unsigned int));
426 int objnotfound = 0, objlocked = 0;
427 int v_nomatch = 0, v_matchlock = 0, v_matchnolock = 0;
429 /* modptr points to the beginning of the object store
430 * created at the Pariticipant.
431 * Object store holds the modified objects involved in the transaction request */
432 ptr = (char *) modptr;
434 /* Process each oid in the machine pile/ group per thread */
435 for (i = 0; i < fixed->numread + fixed->nummod; i++) {
436 if (i < fixed->numread) {//Objs only read and not modified
437 int incr = sizeof(unsigned int) + sizeof(unsigned short);// Offset that points to next position in the objread array
439 oid = *((unsigned int *)(objread + incr));
440 incr += sizeof(unsigned int);
441 version = *((unsigned short *)(objread + incr));
442 } else {//Objs modified
444 headptr = (objheader_t *) ptr;
446 version = headptr->version;
447 GETSIZE(tmpsize, headptr);
448 ptr += sizeof(objheader_t) + tmpsize;
451 /* Check if object is still present in the machine since the beginning of TRANS_REQUEST */
453 if ((mobj = mhashSearch(oid)) == NULL) {/* Obj not found */
454 /* Save the oids not found and number of oids not found for later use */
455 oidnotfound[objnotfound] = oid;
457 } else { /* If Obj found in machine (i.e. has not moved) */
458 /* Check if Obj is locked by any previous transaction */
459 if (test_and_set(STATUSPTR(mobj))) {
461 if (version == ((objheader_t *)mobj)->version) { /* If locked then match versions */
463 } else {/* If versions don't match ...HARD ABORT */
465 /* Send TRANS_DISAGREE to Coordinator */
466 control = TRANS_DISAGREE;
468 for(j = 0; j < objlocked; j++) {
469 if((headptr = mhashSearch(oidlocked[j])) == NULL) {
470 printf("mhashSearch returns NULL at %s, %d\n", __FILE__, __LINE__);
473 UnLock(STATUSPTR(headptr));
477 send_data(acceptfd, &control, sizeof(char));
480 } else {/* If Obj is not locked then lock object */
481 /* Save all object oids that are locked on this machine during this transaction request call */
482 oidlocked[objlocked] = OID(((objheader_t *)mobj));
484 if (version == ((objheader_t *)mobj)->version) { /* Check if versions match */
486 } else { /* If versions don't match ...HARD ABORT */
488 control = TRANS_DISAGREE;
490 for(j = 0; j < objlocked; j++) {
491 if((headptr = mhashSearch(oidlocked[j])) == NULL) {
492 printf("mhashSearch returns NULL at %s, %d\n", __FILE__, __LINE__);
499 /* Send TRANS_DISAGREE to Coordinator */
500 send_data(acceptfd, &control, sizeof(char));
507 /* Decide what control message to send to Coordinator */
508 if ((control = decideCtrlMessage(fixed, transinfo, &v_matchnolock, &v_matchlock, &v_nomatch, &objnotfound, &objlocked,
509 modptr, oidnotfound, oidlocked, acceptfd)) == 0) {
510 printf("Error: In decideCtrlMessage() %s, %d\n", __FILE__, __LINE__);
517 /* This function decides what control message such as TRANS_AGREE, TRANS_DISAGREE or TRANS_SOFT_ABORT
518 * to send to Coordinator based on the votes of oids involved in the transaction */
519 char decideCtrlMessage(fixed_data_t *fixed, trans_commit_data_t *transinfo, int *v_matchnolock, int *v_matchlock,
520 int *v_nomatch, int *objnotfound, int *objlocked, void *modptr,
521 unsigned int *oidnotfound, unsigned int *oidlocked, int acceptfd) {
525 /* Condition to send TRANS_AGREE */
526 if(*(v_matchnolock) == fixed->numread + fixed->nummod) {
527 control = TRANS_AGREE;
528 /* Send control message */
529 send_data(acceptfd, &control, sizeof(char));
531 /* Condition to send TRANS_SOFT_ABORT */
532 if((*(v_matchlock) > 0 && *(v_nomatch) == 0) || (*(objnotfound) > 0 && *(v_nomatch) == 0)) {
533 control = TRANS_SOFT_ABORT;
535 /* Send control message */
536 send_data(acceptfd, &control, sizeof(char));
538 /* Send number of oids not found and the missing oids if objects are missing in the machine */
539 if(*(objnotfound) != 0) {
541 msg[0] = *(objnotfound);
542 send_data(acceptfd, &msg, sizeof(int));
543 int size = sizeof(unsigned int)* *(objnotfound);
544 send_data(acceptfd, oidnotfound, size);
548 /* Fill out the trans_commit_data_t data structure. This is required for a trans commit process
549 * if Participant receives a TRANS_COMMIT */
550 transinfo->objlocked = oidlocked;
551 transinfo->objnotfound = oidnotfound;
552 transinfo->modptr = modptr;
553 transinfo->numlocked = *(objlocked);
554 transinfo->numnotfound = *(objnotfound);
559 /* This function processes all modified objects involved in a TRANS_COMMIT and updates pointer
560 * addresses in lookup table and also changes version number
561 * Sends an ACK back to Coordinator */
562 int transCommitProcess(void *modptr, unsigned int *oidmod, unsigned int *oidlocked, int nummod, int numlocked, int acceptfd) {
564 objheader_t *newheader;
565 int i = 0, offset = 0;
569 /* Process each modified object saved in the mainobject store */
570 for(i = 0; i < nummod; i++) {
571 if((header = (objheader_t *) mhashSearch(oidmod[i])) == NULL) {
572 printf("Error: mhashsearch returns NULL at %s, %d\n", __FILE__, __LINE__);
575 GETSIZE(tmpsize,header);
576 memcpy((char*)header + sizeof(objheader_t), ((char *)modptr + sizeof(objheader_t) + offset), tmpsize);
577 header->version += 1;
578 /* If threads are waiting on this object to be updated, notify them */
579 if(header->notifylist != NULL) {
580 notifyAll(&header->notifylist, OID(header), header->version);
582 offset += sizeof(objheader_t) + tmpsize;
588 /* Unlock locked objects */
589 for(i = 0; i < numlocked; i++) {
590 if((header = (objheader_t *) mhashSearch(oidlocked[i])) == NULL) {
591 printf("Error: mhashsearch returns NULL at %s, %d\n", __FILE__, __LINE__);
594 UnLock(STATUSPTR(header));
596 //TODO Update location lookup table
598 /* Send ack to coordinator */
599 control = TRANS_SUCESSFUL;
600 send_data((int)acceptfd, &control, sizeof(char));
604 /* This function recevies the oid and offset tuples from the Coordinator's prefetch call.
605 * Looks for the objects to be prefetched in the main object store.
606 * If objects are not found then record those and if objects are found
607 * then use offset values to prefetch references to other objects */
609 int prefetchReq(int acceptfd) {
610 int i, size, objsize, numoffset = 0;
612 char *recvbuffer, control;
613 unsigned int oid, mid=-1;
619 recv_data((int)acceptfd, &numoffset, sizeof(int));
622 recv_data((int)acceptfd, &oidmid, 2*sizeof(unsigned int));
624 if (mid != oidmid.mid) {
626 freeSockWithLock(transPResponseSocketPool, mid, sd);
629 sd = getSockWithLock(transPResponseSocketPool, mid);
631 short offsetarry[numoffset];
632 recv_data((int) acceptfd, offsetarry, numoffset*sizeof(short));
634 /*Process each oid */
635 if ((header = mhashSearch(oid)) == NULL) {/* Obj not found */
636 /* Save the oids not found in buffer for later use */
637 size = sizeof(int) + sizeof(char) + sizeof(unsigned int) ;
638 char sendbuffer[size];
639 *((int *) sendbuffer) = size;
640 *((char *)(sendbuffer + sizeof(int))) = OBJECT_NOT_FOUND;
641 *((unsigned int *)(sendbuffer + sizeof(int) + sizeof(char))) = oid;
642 control = TRANS_PREFETCH_RESPONSE;
643 sendPrefetchResponse(sd, &control, sendbuffer, &size);
644 } else { /* Object Found */
646 GETSIZE(objsize, header);
647 size = sizeof(int) + sizeof(char) + sizeof(unsigned int) + sizeof(objheader_t) + objsize;
648 char sendbuffer[size];
649 *((int *) (sendbuffer + incr)) = size;
651 *((char *)(sendbuffer + incr)) = OBJECT_FOUND;
652 incr += sizeof(char);
653 *((unsigned int *)(sendbuffer+incr)) = oid;
654 incr += sizeof(unsigned int);
655 memcpy(sendbuffer + incr, header, objsize + sizeof(objheader_t));
657 control = TRANS_PREFETCH_RESPONSE;
658 sendPrefetchResponse(sd, &control, sendbuffer, &size);
660 /* Calculate the oid corresponding to the offset value */
661 for(i = 0 ; i< numoffset ; i++) {
662 /* Check for arrays */
663 if(TYPE(header) > NUMCLASSES) {
664 int elementsize = classsize[TYPE(header)];
665 struct ArrayObject *ao = (struct ArrayObject *) (((char *)header) + sizeof(objheader_t));
666 unsigned short length = ao->___length___;
667 /* Check if array out of bounds */
668 if(offsetarry[i]< 0 || offsetarry[i] >= length) {
671 oid = *((unsigned int *)(((char *)header) + sizeof(objheader_t) + sizeof(struct ArrayObject) + (elementsize*offsetarry[i])));
673 oid = *((unsigned int *)(((char *)header) + sizeof(objheader_t) + offsetarry[i]));
676 /* Don't continue if we hit a NULL pointer */
680 if((header = mhashSearch(oid)) == NULL) {
681 size = sizeof(int) + sizeof(char) + sizeof(unsigned int) ;
682 char sendbuffer[size];
683 *((int *) sendbuffer) = size;
684 *((char *)(sendbuffer + sizeof(int))) = OBJECT_NOT_FOUND;
685 *((unsigned int *)(sendbuffer + sizeof(int) + sizeof(char))) = oid;
687 control = TRANS_PREFETCH_RESPONSE;
688 sendPrefetchResponse(sd, &control, sendbuffer, &size);
690 } else {/* Obj Found */
692 GETSIZE(objsize, header);
693 size = sizeof(int) + sizeof(char) + sizeof(unsigned int) + sizeof(objheader_t) + objsize;
694 char sendbuffer[size];
695 *((int *) (sendbuffer + incr)) = size;
697 *((char *)(sendbuffer + incr)) = OBJECT_FOUND;
698 incr += sizeof(char);
699 *((unsigned int *)(sendbuffer+incr)) = oid;
700 incr += sizeof(unsigned int);
701 memcpy(sendbuffer + incr, header, objsize + sizeof(objheader_t));
703 control = TRANS_PREFETCH_RESPONSE;
704 sendPrefetchResponse(sd, &control, sendbuffer, &size);
711 freeSockWithLock(transPResponseSocketPool, mid, sd);
716 void sendPrefetchResponse(int sd, char *control, char *sendbuffer, int *size) {
717 send_data(sd, control, sizeof(char));
718 /* Send the buffer with its size */
719 int length = *(size);
720 send_data(sd, sendbuffer, length);
723 void processReqNotify(unsigned int numoid, unsigned int *oidarry, unsigned short *versionarry, unsigned int mid, unsigned int threadid) {
726 unsigned short newversion;
727 char msg[1+ 2 * sizeof(unsigned int) + sizeof(unsigned short)];
729 struct sockaddr_in remoteAddr;
735 oid = *(oidarry + i);
736 if((header = (objheader_t *) mhashSearch(oid)) == NULL) {
737 printf("Error: mhashsearch returns NULL at %s, %d\n", __FILE__, __LINE__);
740 /* Check to see if versions are same */
742 if (test_and_set(STATUSPTR(header))==0) {
744 newversion = header->version;
745 if(newversion == *(versionarry + i)) {
746 //Add to the notify list
747 if((header->notifylist = insNode(header->notifylist, threadid, mid)) == NULL) {
748 printf("Error: Obj notify list points to NULL %s, %d\n", __FILE__, __LINE__);
751 UnLock(STATUSPTR(header));
753 UnLock(STATUSPTR(header));
754 if ((sd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
755 perror("processReqNotify():socket()");
758 bzero(&remoteAddr, sizeof(remoteAddr));
759 remoteAddr.sin_family = AF_INET;
760 remoteAddr.sin_port = htons(LISTEN_PORT);
761 remoteAddr.sin_addr.s_addr = htonl(mid);
763 if (connect(sd, (struct sockaddr *)&remoteAddr, sizeof(remoteAddr)) < 0){
764 printf("Error: processReqNotify():error %d connecting to %s:%d\n", errno,
765 inet_ntoa(remoteAddr.sin_addr), LISTEN_PORT);
769 //Send Update notification
770 msg[0] = THREAD_NOTIFY_RESPONSE;
771 *((unsigned int *)&msg[1]) = oid;
772 size = sizeof(unsigned int);
773 *((unsigned short *)(&msg[1]+size)) = newversion;
774 size += sizeof(unsigned short);
775 *((unsigned int *)(&msg[1]+size)) = threadid;
776 size = 1+ 2*sizeof(unsigned int) + sizeof(unsigned short);
777 send_data(sd, msg, size);