static v_networkHashValue
v_networkReaderEntryCalculateHashValue(
v_networkReaderEntry entry)
{
v_networkHashValue result = {0xa0, 0x22, 0x8d, 0x07};
const char *partitionName;
const char *topicName;
const char *currentPtr;
partitionName = v_partitionName(v_groupPartition(entry->group));
topicName = v_topicName(v_groupTopic(entry->group));
currentPtr = partitionName;
while (*currentPtr != '\0') {
/* gcc2.96 gave internal compile errrors (with optimisation enabled)
* when compiling the NW_ROT_CHAR macro twice in same command :
* these assignments are deliberatly split over 2 lines as workaround.
*/
result.h1 = NW_ROT_CHAR(result.h1, 1);
result.h1 += NW_ROT_CHAR(*currentPtr, 4);
result.h2 = NW_ROT_CHAR(result.h2, 2);
result.h2 += NW_ROT_CHAR(*currentPtr, 7);
result.h3 = NW_ROT_CHAR(result.h3, 3);
result.h3 += NW_ROT_CHAR(*currentPtr, 1);
result.h4 = NW_ROT_CHAR(result.h4, 4);
result.h4 += NW_ROT_CHAR(*currentPtr, 5);
currentPtr = &(currentPtr[1]);
}
currentPtr = topicName;
while (*currentPtr != '\0') {
result.h1 = NW_ROT_CHAR(result.h1, 4);
result.h1 += NW_ROT_CHAR(*currentPtr, 7);
result.h2 = NW_ROT_CHAR(result.h2, 3);
result.h2 += NW_ROT_CHAR(*currentPtr, 1);
result.h3 = NW_ROT_CHAR(result.h3, 2);
result.h3 += NW_ROT_CHAR(*currentPtr, 5);
result.h4 = NW_ROT_CHAR(result.h4, 1);
result.h4 += NW_ROT_CHAR(*currentPtr, 4);
currentPtr = &(currentPtr[1]);
}
return result;
}
void
nw_receiveChannelAddGroup(
nw_receiveChannel channel,
v_networkReaderEntry entry)
{
NW_CONFIDENCE(channel != NULL);
if (channel != NULL) {
/* Add entry to hashtable */
nw_entryHashInsert(channel->hash, entry);
NW_TRACE_3(Groups, 2,
"Channel %u added new group with partition %s and topic %s",
((nw_channel)(channel))->channelId,
v_partitionName(v_groupPartition(entry->group)),
v_topicName(v_groupTopic(entry->group)));
}
}
static void
nw_entryHashInsert(
nw_entryHash entryHash,
v_networkReaderEntry entry)
{
nw_entryHashItem *itemPtr;
nw_bool ready = FALSE;
int cmpRes;
const c_char *partitionName;
const c_char *topicName;
partitionName = v_partitionName(v_groupPartition(entry->group));
topicName = v_topicName(v_groupTopic(entry->group));
itemPtr = &NW_ITEM_FROM_HASHVALUE(entryHash, entry->hashValue);
while ((*itemPtr != NULL) && !ready) {
cmpRes = strcmp((*itemPtr)->topicName, topicName);
if (cmpRes == 0) {
cmpRes = strcmp((*itemPtr)->partitionName, partitionName);
if (cmpRes == 0) {
ready = TRUE;
} else if (cmpRes < 0) {
itemPtr = &((*itemPtr)->next);
} else {
/* No entry was found and no entry will be found, insert new */
nw_entryHashItemInsert(entry->hashValue, partitionName, topicName,
entry, itemPtr);
ready = TRUE;
}
} else if (cmpRes < 0) {
itemPtr = &((*itemPtr)->next);
} else {
/* No entry found, and will not be found */
nw_entryHashItemInsert(entry->hashValue, partitionName, topicName,
entry, itemPtr);
ready = TRUE;
}
}
if (!ready) {
/* No proper place found, we are at the tail now */
nw_entryHashItemInsert(entry->hashValue, partitionName, topicName,
entry, itemPtr);
}
}
c_ulong
nw_sendChannelWrite(
nw_sendChannel sendChannel,
v_networkReaderEntry entry,
v_message message,
nw_signedLength *maxBytes,
plugSendStatistics pss)
{
c_ulong result = 0;
nw_channel channel = (nw_channel)sendChannel;
NW_CONFIDENCE(channel);
result = nw_bridgeWrite(channel->owningBridge, channel->channelId,
entry->networkPartitionId, message, entry->hashValue,
v_partitionName(v_groupPartition(entry->group)),
v_topicName(v_groupTopic(entry->group)),maxBytes, pss);
return result;
}
void
d_reportLocalGroup(
d_durability d,
const char *threadName,
v_group group)
{
const c_char* durability;
v_topicQos qos;
if(group){
qos = v_topicQosRef(group->topic);
switch(qos->durability.kind){
case V_DURABILITY_VOLATILE:
durability = "VOLATILE";
break;
case V_DURABILITY_TRANSIENT_LOCAL:
durability = "TRANSIENT LOCAL";
break;
case V_DURABILITY_TRANSIENT:
durability = "TRANSIENT";
break;
case V_DURABILITY_PERSISTENT:
durability = "PERSISTENT";
break;
default:
durability = "<<UNKNOWN>>";
assert(FALSE);
break;
}
} else {
durability = "<<UNKNOWN>>";
assert(FALSE);
}
d_printTimedEvent(d, D_LEVEL_FINE,
threadName, "Group found: %s.%s (%s)\n",
v_partitionName(v_groupPartition(group)),
v_topicName(v_groupTopic(group)),
durability);
}
static void
nw_channelWriterMain(
v_entity e,
c_voidp arg)
{
v_networkReader reader;
nw_channelWriter channelWriter;
c_bool newGroupAvailable;
v_networkQueue qosQueue;
v_networkReaderWaitResult waitResult;
c_long bytesWritten;
/* Total number of messages sent to the network */
c_ulong writtenCountMessages;
/* Total number of bytes sent to the network */
c_ulong writtenCountBytes;
/* Total number of bytes sent to the network during one burst */
c_ulong writtenCountBytesThisBurst;
/* Number of message sent to the network after last report */
c_ulong writtenCountMessagesReport;
v_message message;
v_networkReaderEntry entry;
c_ulong sequenceNumber;
v_gid sender;
c_bool sendTo;
v_gid receiver;
c_time sendBefore;
c_ulong priority;
c_bool more = TRUE;
c_bool slowingDown;
c_ulong timeoutCount;
nw_signedLength credits;
v_networking n;
NW_STRUCT(plugSendStatistics) pss = {0,0,0,0,0,0,0,0,0,0,
{0,
{{0,0},
0},
{{0,0},
0},
{0.0,0}},
{0,
{{0,0},
0},
{{0,0},
0},
{0.0,0}},
0,0,0};
v_fullCounterInit(&(pss.adminQueueAcks));
v_fullCounterInit(&(pss.adminQueueData));
reader = v_networkReader(e);
channelWriter = (nw_channelWriter)arg;
/* This line is needed as long as the discovery channel is not yet implemented */
writtenCountBytesThisBurst = 0;
writtenCountMessages = 0;
writtenCountBytes = 0;
writtenCountMessagesReport = 0;
slowingDown = FALSE;
timeoutCount = 0;
credits = 0;
while (!(int)nw_runnableTerminationRequested((nw_runnable)channelWriter)) {
/* Wait for data on the reader */
if (!slowingDown) {
waitResult = v_networkReaderWait(reader,
channelWriter->queueId,
&qosQueue);
} else {
waitResult = v_networkReaderWaitDelayed(reader,
channelWriter->queueId, &qosQueue);
NW_CONFIDENCE(waitResult & (V_WAITRESULT_TIMEOUT | V_WAITRESULT_TRIGGERED));
}
if ((waitResult & V_WAITRESULT_TRIGGERED) &&
(!nw_runnableTerminationRequested((nw_runnable)channelWriter))) {
/* If necessary, check if any new groups need to be added */
newGroupAvailable = nw_channelUserRetrieveNewGroup(
(nw_channelUser)channelWriter, &entry);
while (newGroupAvailable) {
/* Create a new channel on the network */
/* No, do not call any function. With the new design,
* a channelWriter does not need to know anything about this
* new group. Maybe at a later stage. */
/* nw_channelAddGroup((nw_channel)channelWriter->sendChannel, entry); */
/* And notify we are connected */
v_networkReaderEntryNotifyConnected(entry,channelWriter->serviceName);
newGroupAvailable = nw_channelUserRetrieveNewGroup(
(nw_channelUser)channelWriter, &entry);
}
}
/* Resend data should also obey max_burst_size
* Each clocktick, the remaining credits of the last period and a
* third of the new max_burst_size budget may be used for resend data.
* The rest of the budget is assigned after that, and can be used to
* flush stored buffers of send fresh data.
*/
if (waitResult & V_WAITRESULT_TIMEOUT) {
/*
* The periodic action is needed for every clocktick.
* This will also update the credits, for the amount of bandwidth
* available in the coming period.
*/
/*stat update routine */
n = v_networking(v_subscriber(v_reader(reader)->subscriber)->participant);
/* update statistics */
if (v_entity(n)->statistics) {
if (!pss.enabled) {
pss.enabled =1;
}
/* sync plug stats */
nw_updatePlugSendStatistics(&pss,channelWriter);
nw_SendChannelUpdate(v_networkingStatistics(v_entity(n)->statistics)->channels[channelWriter->stat_channel_id],channelWriter->scs);
}
nw_sendChannelPeriodicAction(channelWriter->sendChannel,&credits,&pss); /*struc call*/
/* A flush is needed if we are slowing down. */
if (slowingDown) {
/* The return value is true is all data has been sent.
* Afterwards, credits will contain the new amount of allowed
* bytes.
* We are using a special flush function here that flushes full
* buffers only */
slowingDown = !nw_sendChannelFlush(channelWriter->sendChannel,
FALSE, &credits, &pss);
}
}
if ((waitResult & V_WAITRESULT_MSGWAITING) && !slowingDown) {
/* Messages are waiting... */
writtenCountBytesThisBurst = 0;
more= TRUE;
while (more &&
((nw_signedLength)writtenCountBytesThisBurst <= credits))
{
/* Take any new messages */
v_networkQueueTakeFirst(qosQueue, &message, &entry,
&sequenceNumber, &sender, &sendTo, &receiver,
&sendBefore, &priority, &more);
NW_CONFIDENCE(message != NULL);
NW_CONFIDENCE(entry != NULL);
if (!(NW_SECURITY_CHECK_FOR_PUBLISH_PERMISSION_OF_SENDER_ON_SENDER_SIDE(entry))) {
bytesWritten = 0; /* indicates that nothing has been written */
NW_REPORT_WARNING_2(
"nw_channelWriterMain",
"Channel \"%s\" could not deliver message 0x%x : message dropped!",
((nw_runnable)channelWriter)->name,
message);
} else {
bytesWritten = nw_sendChannelWrite(channelWriter->sendChannel,
entry, message, &credits ,&pss); /* stat struc plug vars */
if (bytesWritten == 0) {
NW_REPORT_WARNING_2(
"nw_channelWriterMain",
"Channel \"%s\" could not deliver message 0x%x : message dropped!",
((nw_runnable)channelWriter)->name,
message);
}
/*numberOfMessagesSent stats*/
if (pss.enabled) {
channelWriter->scs->numberOfMessagesSent++;
}
assert( bytesWritten > 0); /* if permission grantedm the value must be greater 0 */
}
writtenCountBytesThisBurst += bytesWritten;
#define NW_IS_BUILTIN_DOMAINNAME(name) ((int)(name)[0] == (int)'_')
/* Do not trace for internal partitions */
if (bytesWritten>0 && /* might be 0 if access control refuses write permission */
!NW_IS_BUILTIN_DOMAINNAME(
v_partitionName(v_groupPartition(entry->group)))) {
#undef NW_IS_BUILTIN_DOMAINNAME
writtenCountBytes += bytesWritten;
writtenCountMessages++;
writtenCountMessagesReport++;
if (writtenCountMessagesReport == channelWriter->reportInterval) {
NW_TRACE_3(Send, 3,
"Channel %s: %u messages (%u bytes) "
"taken from queue and written to network",
((nw_runnable)channelWriter)->name,
writtenCountMessages, writtenCountBytes);
writtenCountMessagesReport = 0;
}
NW_TRACE_3(Send, 4,
"Channel %s: data message taken from queue, "
"and written to network (partition = %s, topic = %s)",
((nw_runnable)channelWriter)->name,
v_partitionName(v_groupPartition(entry->group)),
v_topicName(v_groupTopic(entry->group)));
}
c_free(message);
c_free(entry);
}
slowingDown = !nw_sendChannelFlush(channelWriter->sendChannel,
TRUE, &credits, &pss);
}
}
NW_TRACE_3(Send, 2,
"Channel %s: %u messages (%u bytes) taken from queue and "
"written to network", ((nw_runnable)channelWriter)->name,
writtenCountMessages, writtenCountBytes);
}
