int32
Filter::NumberOfThreads()
{
const int32 units = GetNumberOfUnits();
int32 n;
n = units / 32; // at least 32 units per CPU
if (n > CPUCount()) {
n = CPUCount();
} else if (n <= 0) {
n = 1; // at least one thread!
}
return n;
}
unsigned int GetLogicalProcssingUnitCount(void)
{
unsigned int TotAvailLogical = 0, // Number of available logical CPU per CORE
TotAvailCore = 0, // Number of available cores per physical processor
PhysicalNum = 0; // Total number of physical processors
unsigned char StatusFlag = 0;
/* Not sure what this does - ignore
if (CpuIDSupported() < 4) { // CPUID does not report leaf 4 information
printf("\nUser Warning:\n CPUID Leaf 4 is not supported or disabled. Please check \
\n BIOS and correct system configuration error if leaf 4 is disabled. \n");
}
*/
StatusFlag = CPUCount(&TotAvailLogical, &TotAvailCore, &PhysicalNum);
if( USER_CONFIG_ISSUE == StatusFlag) {
printf("User Configuration Error: Not all logical processors in the system are enabled \
while running this process.\n");
return 1;
}
