epics/pcas
0
0
Fork 0
Code Issues Pull Requests Projects Wiki Activity

removed double checked lock optimzation

Browse Source
This commit is contained in:
Jeff Hill
2002-10-23 22:57:06 +00:00
parent 9d07afdbfd
commit 0817ad51ba
1 changed files with 15 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
src/ca/searchTimer.cpp
View File

@@ -102,34 +102,29 @@ void searchTimer::recomputeTimerPeriodAndStartTimer ( unsigned minRetryNew, cons
bool start = false;
double totalDelay = initialDelay;
if ( this->iiu.channelCount() > 0 && this->minRetry > minRetryNew ) {
epicsGuard < searchTimerMutex > locker ( this->mutex );
epicsGuard < searchTimerMutex > locker ( this->mutex );
// double check mutex lock optimization is important because
// this gets called often when a channel is created and when a
// beacon anomaly occurs
if ( this->iiu.channelCount() == 0 || this->minRetry <= minRetryNew ) {
return;
}
if ( this->iiu.channelCount() == 0 || this->minRetry <= minRetryNew ) {
return;
}
double oldPeriod = this->period;
double oldPeriod = this->period;
this->recomputeTimerPeriod ( minRetryNew );
this->recomputeTimerPeriod ( minRetryNew );
totalDelay += this->period;
totalDelay += this->period;
if ( totalDelay < oldPeriod ) {
epicsTimer::expireInfo info = this->timer.getExpireInfo ();
if ( info.active ) {
double delay = epicsTime::getCurrent() - info.expireTime;
if ( delay > totalDelay ) {
start = true;
}
}
else {
if ( totalDelay < oldPeriod ) {
epicsTimer::expireInfo info = this->timer.getExpireInfo ();
if ( info.active ) {
double delay = epicsTime::getCurrent() - info.expireTime;
if ( delay > totalDelay ) {
start = true;
}
}
else {
start = true;
}
}
if ( start ) {