static void
MXUserStatsActionRW(MXUserHeader *header) // IN:
{
MXUserRWLock *lock = (MXUserRWLock *) header;
MXUserHeldStats *heldStats = Atomic_ReadPtr(&lock->heldStatsMem);
MXUserAcquireStats *acquireStats = Atomic_ReadPtr(&lock->acquireStatsMem);
if (heldStats) {
MXUserDumpBasicStats(&heldStats->data, header);
if (Atomic_ReadPtr(&heldStats->histo) != NULL) {
MXUserHistoDump(Atomic_ReadPtr(&heldStats->histo), header);
}
}
if (acquireStats) {
Bool isHot;
Bool doLog;
double contentionRatio;
/*
* Dump the statistics for the specified lock.
*/
MXUserDumpAcquisitionStats(&acquireStats->data, header);
if (Atomic_ReadPtr(&acquireStats->histo) != NULL) {
MXUserHistoDump(Atomic_ReadPtr(&acquireStats->histo), header);
}
/*
* Has the lock gone "hot"? If so, implement the hot actions.
*/
MXUserKitchen(&acquireStats->data, &contentionRatio, &isHot, &doLog);
if (isHot) {
MXUserForceHisto(&acquireStats->histo,
MXUSER_STAT_CLASS_ACQUISITION,
MXUSER_DEFAULT_HISTO_MIN_VALUE_NS,
MXUSER_DEFAULT_HISTO_DECADES);
if (heldStats) {
MXUserForceHisto(&heldStats->histo,
MXUSER_STAT_CLASS_HELD,
MXUSER_DEFAULT_HISTO_MIN_VALUE_NS,
MXUSER_DEFAULT_HISTO_DECADES);
}
if (doLog) {
Log("HOT LOCK (%s); contention ratio %f\n",
lock->header.name, contentionRatio);
}
}
}
}
void
MXUserDumpAcquisitionStats(MXUserAcquisitionStats *stats, // IN:
MXUserHeader *header) // IN:
{
if (stats->numAttempts > 0) {
if (stats->numSuccesses > 0) {
MXUserDumpBasicStats(&stats->basicStats, header);
}
MXUserStatsLog("MXUser: ce l=%u a=%"FMT64"u s=%"FMT64"u sc=%"FMT64"u "
"sct=%"FMT64"u t=%"FMT64"u\n",
header->bits.serialNumber,
stats->numAttempts,
stats->numSuccesses,
stats->numSuccessesContended,
stats->successContentionTime,
stats->totalContentionTime);
}
}