void
v_networkReaderFree(
v_networkReader reader)
{
c_bool sendTo, more;
v_message message;
c_ulong sequenceNumber, priority;
v_gid sender, receiver;
os_timeE sendBefore;
v_networkReaderEntry entry;
c_ulong i;
c_keep(reader);
/* call inherited free,
* which will remove the entry from the associated groups
*/
v_readerFree(v_reader(reader));
/* remove the messages still pressent in the network queues */
for (i = 0; i < reader->nofQueues; i++) {
while (v_networkQueueTakeFirst (
v_networkQueue(reader->queues[i]), &message, &entry, &sequenceNumber,
&sender, &sendTo, &receiver, &sendBefore, &priority, &more)) {
c_free(message);
c_free(entry);
}
}
c_free(reader);
}
v_networkReaderWaitResult
v_networkReaderWaitDelayed(
v_networkReader reader,
c_ulong queueId,
v_networkQueue *queue)
{
c_time sleep = {0,1000000};
/* Simply sleeping here for resolution time, is not correct.
We should wakeup on, or just after the next wakeuptime.*/
sleep = c_timeAdd(sleep,v_networkQueue(reader->queues[queueId-1])->nextWakeup);
sleep = c_timeSub(v_networkQueue(reader->queues[queueId-1])->nextWakeup, v_timeGet());
c_timeNanoSleep(sleep);
return V_WAITRESULT_TIMEOUT | v_networkReaderWait(reader, queueId, queue);
}
v_networkReaderWaitResult
v_networkReaderWaitDelayed(
v_networkReader reader,
c_ulong queueId,
v_networkQueue *queue)
{
os_duration sleep;
/* Simply sleeping here for resolution time, is not correct.
* We should wakeup on, or just after the next wakeuptime.
*/
sleep = os_timeEDiff(v_networkQueue(reader->queues[queueId-1])->nextWakeup, os_timeEGet());
v__kernelProtectWaitEnter(NULL, NULL);
ospl_os_sleep(sleep);
v__kernelProtectWaitExit();
return V_WAITRESULT_TIMEOUT | v_networkReaderWait(reader, queueId, queue);
}
v_networkQueue
v_networkQueueNew(
c_base base,
c_ulong queueSize,
c_ulong priority,
c_bool reliable,
c_bool P2P,
c_time resolution,
v_networkQueueStatistics statistics)
{
v_networkQueue result = NULL;
c_type type;
c_equality equality;
c_bool hasChanged;
c_time now;
type = c_resolve(base, "kernelModule::v_networkQueue");
assert(type);
result = v_networkQueue(c_new(type));
c_free(type);
if (result) {
/* Queue properties */
result->maxMsgCount = queueSize;
result->currentMsgCount = 0;
/* Cached type */
result->statusMarkerType = c_resolve(base, "kernelModule::v_networkStatusMarker");
assert(result->statusMarkerType != NULL);
result->sampleType = c_resolve(base, "kernelModule::v_networkQueueSample");
assert(result->sampleType != NULL);
/* Linked list of in-use marker items */
result->firstStatusMarker = NULL;
result->lastStatusMarker = NULL;
/* Linked list of free marker and message items */
result->freeStatusMarkers = NULL;
result->freeSamples = NULL;
/* Init cv stuff */
c_mutexInit(&result->mutex, SHARED_MUTEX);
c_condInit(&result->cv, &result->mutex, SHARED_COND);
/* Currently no differentiation wrt qos */
result->priority = priority;
result->reliable = reliable;
result->P2P = P2P;
result->statistics = statistics;
equality = c_timeCompare(C_TIME_ZERO, resolution);
if (equality == C_EQ) {
result->periodic = FALSE;
result->resolution = C_TIME_INFINITE;
result->msecsResolution = 0xFFFFFFFF;
result->phaseMilliSeconds = 0;
result->nextWakeup = C_TIME_INFINITE;
} else {
assert(equality == C_LT);
result->periodic = TRUE;
result->resolution = resolution;
TIME_TO_MSEC(resolution, result->msecsResolution);
/* A semi-random phase to avoid wake-ups at the same time */
now = v_timeGet();
result->phaseMilliSeconds = ((c_ulong)(now.nanoseconds/1000000 * 1.618)) %
result->msecsResolution;
v_networkQueueUpdateNextWakeup(result, &hasChanged);
assert(hasChanged);
}
result->threadWaiting = FALSE;
} else {
OS_REPORT(OS_ERROR,
"v_networkQueueNew",0,
"Failed to allocate network queue.");
}
return result;
}
