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This commit is contained in:
Jeff Hill
2000-04-28 01:29:00 +00:00
parent 68c049fa73
commit 547f1b15fa
56 changed files with 8019 additions and 7241 deletions
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94
src/ca/searchTimer.cpp
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@@ -12,6 +12,12 @@
#include "iocinf.h"
#ifdef DEBUG
# define debugPrintf(argsInParen) printf argsInParen
#else
# define debugPrintf(argsInParen)
#endif
//
// searchTimer::searchTimer ()
//
@@ -33,15 +39,16 @@ searchTimer::searchTimer (udpiiu &iiuIn, osiTimerQueue &queueIn) :
//
// searchTimer::reset ()
//
void searchTimer::reset (double periodIn)
void searchTimer::reset (double delayToNextTry)
{
LOCK (this->iiu.niiu.iiu.pcas);
LOCK (this->iiu.pcas);
this->retry = 0;
this->period = periodIn;
UNLOCK (this->iiu.niiu.iiu.pcas);
this->period = CA_RECAST_DELAY;
UNLOCK (this->iiu.pcas);
if (this->timeRemaining()>this->period) {
this->reschedule (0.0);
if (this->timeRemaining()>delayToNextTry) {
this->reschedule (delayToNextTry);
debugPrintf ( ("reschedualed search timer for completion in %f sec\n", delayToNextTry) );
}
}
@@ -53,7 +60,7 @@ void searchTimer::setRetryInterval (unsigned retryNo)
unsigned idelay;
double delay;
LOCK (this->iiu.niiu.iiu.pcas);
LOCK (this->iiu.pcas);
/*
* set the retry number
@@ -70,11 +77,9 @@ void searchTimer::setRetryInterval (unsigned retryNo)
*/
this->period = min (CA_RECAST_PERIOD, delay);
UNLOCK (this->iiu.niiu.iiu.pcas);
UNLOCK (this->iiu.pcas);
#ifdef DEBUG
printf ("new CA search period is %f sec\n", this->period);
#endif
debugPrintf ( ("new CA search period is %f sec\n", this->period) );
}
//
@@ -86,7 +91,7 @@ void searchTimer::setRetryInterval (unsigned retryNo)
//
void searchTimer::notifySearchResponse (nciu *pChan)
{
LOCK (this->iiu.niiu.iiu.pcas);
LOCK (this->iiu.pcas);
if ( this->retrySeqNoAtListBegin <= pChan->retrySeqNo ) {
if ( this->searchResponses < ULONG_MAX ) {
@@ -94,32 +99,31 @@ void searchTimer::notifySearchResponse (nciu *pChan)
}
}
UNLOCK (this->iiu.niiu.iiu.pcas);
UNLOCK (this->iiu.pcas);
if (pChan->retrySeqNo == this->retrySeqNo) {
this->reschedule (0.0);
}
}
//
// searchTimer::expire ()
//
void searchTimer::expire ()
{
nciu *chan;
nciu *firstChan;
int status;
unsigned nSent=0u;
tsDLIterBD<nciu> chan(0);
tsDLIterBD<nciu> firstChan(0);
int status;
unsigned nSent=0u;
/*
* check to see if there is nothing to do here
*/
if (ellCount(&this->iiu.niiu.chidList)==0) {
if ( ellCount (&this->iiu.chidList) ==0 ) {
return;
}
LOCK (this->iiu.niiu.iiu.pcas);
LOCK ( this->iiu.pcas );
/*
* increment the retry sequence number
@@ -136,7 +140,7 @@ void searchTimer::expire ()
*
* The variable this->framesPerTry
* determines the number of UDP frames to be sent
* each time that retrySearchRequest() is called.
* each time that expire() is called.
* If this value is too high we will waste some
* network bandwidth. If it is too low we will
* use very little of the incoming UDP message
@@ -168,11 +172,8 @@ void searchTimer::expire ()
else {
this->framesPerTry += (this->framesPerTry/8) + 1;
}
#if 0
printf ("Increasing frame count to %u t=%u r=%u\n",
this->framesPerTry, this->searchTries,
this->searchResponses);
#endif
debugPrintf ( ("Increasing frame count to %u t=%u r=%u\n",
this->framesPerTry, this->searchTries, this->searchResponses) );
}
}
/*
@@ -185,19 +186,17 @@ void searchTimer::expire ()
this->framesPerTry--;
}
this->framesPerTryCongestThresh = this->framesPerTry/2 + 1;
#if 0
printf ("Congestion detected - set frames per try to %u t=%u r=%u\n",
debugPrintf ( ("Congestion detected - set frames per try to %u t=%u r=%u\n",
this->framesPerTry, this->searchTries,
this->searchResponses);
#endif
this->searchResponses) );
}
/*
* a successful cac_search_msg() sends channel to
* a successful chan->searchMsg() sends channel to
* the end of the list
*/
firstChan = chan = (nciu *) ellFirst (&this->iiu.niiu.chidList);
while (chan) {
firstChan = chan = this->iiu.chidList.first ();
while ( chan != chan.eol () ) {
this->minRetry = min (this->minRetry, chan->retry);
@@ -208,11 +207,9 @@ void searchTimer::expire ()
* dont increase the delay between search
* requests
*/
if ( this->iiu.niiu.iiu.pcas->ca_pEndOfBCastList == chan ) {
if ( this->iiu.pcas->endOfBCastList == chan ) {
if ( this->searchResponses == 0u ) {
#if 0
printf ("increasing search try interval\n");
#endif
debugPrintf ( ("increasing search try interval\n") );
this->setRetryInterval (this->minRetry + 1u);
}
@@ -246,16 +243,14 @@ void searchTimer::expire ()
}
this->searchResponses = 0;
#if 0
printf ("saw end of list\n");
#endif
debugPrintf ( ("saw end of list\n") );
}
/*
* this moves the channel to the end of the
* list (if successful)
*/
status = cac_search_msg (chan);
status = chan->searchMsg ();
if (status != ECA_NORMAL) {
nSent++;
@@ -267,7 +262,7 @@ void searchTimer::expire ()
semBinaryGive (this->iiu.xmitSignal);
/* try again */
status = cac_search_msg (chan);
status = chan->searchMsg ();
if (status != ECA_NORMAL) {
break;
}
@@ -278,8 +273,8 @@ void searchTimer::expire ()
}
chan->retrySeqNo = this->retrySeqNo;
chan = (nciu *) ellFirst (&this->iiu.niiu.chidList);
chan = this->iiu.chidList.first ();
/*
* dont send any of the channels twice within one try
*/
@@ -303,15 +298,12 @@ void searchTimer::expire ()
}
}
UNLOCK (this->iiu.niiu.iiu.pcas);
UNLOCK (this->iiu.pcas);
/* flush out the search request buffer */
semBinaryGive (this->iiu.xmitSignal);
#ifdef DEBUG
printf ("sent %u delay sec=%f\n", nSent, this->period);
#endif
debugPrintf ( ("sent %u delay sec=%f\n", nSent, this->period) );
}
void searchTimer::destroy ()
@@ -320,11 +312,11 @@ void searchTimer::destroy ()
bool searchTimer::again () const
{
if (ellCount(&this->iiu.niiu.chidList)==0) {
if ( ellCount (&this->iiu.chidList) == 0 ) {
return false;
}
else {
if (this->retry < MAXCONNTRIES) {
if ( this->retry < MAXCONNTRIES ) {
return true;
}
else {