int FindProcessorGroupIndex ( int procIdx ) {
// In case of oversubscription spread extra workers in a round robin manner
int holeIdx;
const int numProcs = theProcessorGroups[ProcessorGroupInfo::NumGroups - 1].numProcsRunningTotal;
if ( procIdx >= numProcs - 1 ) {
holeIdx = INT_MAX;
procIdx = (procIdx - numProcs + 1) % numProcs;
}
else
holeIdx = ProcessorGroupInfo::HoleIndex;
__TBB_ASSERT( hardware_concurrency_info == initialization_complete, "FindProcessorGroupIndex is used before AvailableHwConcurrency" );
// Approximate the likely group index assuming all groups are of the same size
int i = procIdx / theProcessorGroups[0].numProcs;
// Make sure the approximation is a valid group index
if (i >= ProcessorGroupInfo::NumGroups) i = ProcessorGroupInfo::NumGroups-1;
// Now adjust the approximation up or down
if ( theProcessorGroups[i].numProcsRunningTotal > HoleAdjusted(procIdx, i) ) {
while ( theProcessorGroups[i].numProcsRunningTotal - theProcessorGroups[i].numProcs > HoleAdjusted(procIdx, i) ) {
__TBB_ASSERT( i > 0, NULL );
--i;
}
}
else {
do {
++i;
} while ( theProcessorGroups[i].numProcsRunningTotal <= HoleAdjusted(procIdx, i) );
}
__TBB_ASSERT( i < ProcessorGroupInfo::NumGroups, NULL );
return i;
}
int FindProcessorGroupIndex ( int procIdx ) {
// In case of oversubscription spread extra workers in a round robin manner
int holeIdx;
const int numProcs = theProcessorGroups[ProcessorGroupInfo::NumGroups - 1].numProcsRunningTotal;
if ( procIdx >= numProcs - 1 ) {
holeIdx = INT_MAX;
procIdx = (procIdx - numProcs + 1) % numProcs;
}
else
holeIdx = ProcessorGroupInfo::HoleIndex;
__TBB_ASSERT( hardware_concurrency_info == initialization_complete, "FindProcessorGroupIndex is used before AvailableHwConcurrency" );
int i = procIdx / theProcessorGroups[0].numProcs;
if ( theProcessorGroups[i].numProcsRunningTotal > HoleAdjusted(procIdx, i) ) {
while ( theProcessorGroups[i].numProcsRunningTotal - theProcessorGroups[i].numProcs > HoleAdjusted(procIdx, i) ) {
__TBB_ASSERT( i > 0, NULL );
--i;
}
}
else {
do {
++i;
} while ( theProcessorGroups[i].numProcsRunningTotal <= HoleAdjusted(procIdx, i) );
}
__TBB_ASSERT( i < ProcessorGroupInfo::NumGroups, NULL );
return i;
}
