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/*
* Copyright 2020-2022 The OSHI Project Contributors
* SPDX-License-Identifier: MIT
*/
package oshi.driver.windows;
import static oshi.hardware.common.AbstractCentralProcessor.orderedProcCaches;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import com.sun.jna.platform.win32.Kernel32Util;
import com.sun.jna.platform.win32.VersionHelpers;
import com.sun.jna.platform.win32.WinNT;
import com.sun.jna.platform.win32.WinNT.CACHE_RELATIONSHIP;
import com.sun.jna.platform.win32.WinNT.GROUP_AFFINITY;
import com.sun.jna.platform.win32.WinNT.LOGICAL_PROCESSOR_RELATIONSHIP;
import com.sun.jna.platform.win32.WinNT.NUMA_NODE_RELATIONSHIP;
import com.sun.jna.platform.win32.WinNT.PROCESSOR_RELATIONSHIP;
import com.sun.jna.platform.win32.WinNT.SYSTEM_LOGICAL_PROCESSOR_INFORMATION;
import com.sun.jna.platform.win32.WinNT.SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX;
import com.sun.jna.platform.win32.COM.WbemcliUtil.WmiResult;
import oshi.annotation.concurrent.ThreadSafe;
import oshi.driver.windows.wmi.Win32Processor;
import oshi.driver.windows.wmi.Win32Processor.ProcessorIdProperty;
import oshi.hardware.CentralProcessor.LogicalProcessor;
import oshi.hardware.CentralProcessor.PhysicalProcessor;
import oshi.hardware.CentralProcessor.ProcessorCache;
import oshi.hardware.CentralProcessor.ProcessorCache.Type;
import oshi.util.platform.windows.WmiUtil;
import oshi.util.tuples.Triplet;
/**
* Utility to query Logical Processor Information
*/
@ThreadSafe
public final class LogicalProcessorInformation {
private static final boolean IS_WIN10_OR_GREATER = VersionHelpers.IsWindows10OrGreater();
private LogicalProcessorInformation() {
}
/**
* Get a list of logical processors on this machine. Requires Windows 7 and higher.
*
* @return A list of logical processors
*/
public static Triplet, List, List> getLogicalProcessorInformationEx() {
// Collect a list of logical processors on each physical core and
// package. These will be 64-bit bitmasks.
SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX[] procInfo = Kernel32Util
.getLogicalProcessorInformationEx(WinNT.LOGICAL_PROCESSOR_RELATIONSHIP.RelationAll);
// Used to cross-reference a processor to package, cache, pr core
List packages = new ArrayList<>();
Set caches = new HashSet<>();
List cores = new ArrayList<>();
// Used to iterate
List numaNodes = new ArrayList<>();
// Map to store efficiency class of a processor core
Map coreEfficiencyMap = new HashMap<>();
for (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX info : procInfo) {
switch (info.relationship) {
case LOGICAL_PROCESSOR_RELATIONSHIP.RelationProcessorPackage:
// could assign a package to more than one processor group
packages.add(((PROCESSOR_RELATIONSHIP) info).groupMask);
break;
case LOGICAL_PROCESSOR_RELATIONSHIP.RelationCache:
CACHE_RELATIONSHIP cache = (CACHE_RELATIONSHIP) info;
caches.add(new ProcessorCache(cache.level, cache.associativity, cache.lineSize, cache.size,
Type.values()[cache.type]));
break;
case LOGICAL_PROCESSOR_RELATIONSHIP.RelationProcessorCore:
PROCESSOR_RELATIONSHIP core = ((PROCESSOR_RELATIONSHIP) info);
// for Core, groupCount is always 1
cores.add(core.groupMask[0]);
if (IS_WIN10_OR_GREATER) {
coreEfficiencyMap.put(core.groupMask[0], (int) core.efficiencyClass);
}
break;
case LOGICAL_PROCESSOR_RELATIONSHIP.RelationNumaNode:
numaNodes.add((NUMA_NODE_RELATIONSHIP) info);
break;
default:
// Ignore Group info
break;
}
}
// Windows doesn't define core, cache, and package numbers, so we define our own
// for consistent use across the API. Here we sort so core, cache, and package
// numbers increment consistently with processor numbers/bitmasks, ordered in
// processor groups.
cores.sort(Comparator.comparing(c -> c.group * 64L + Long.numberOfTrailingZeros(c.mask.longValue())));
// if package in multiple groups will still use first group for sorting
packages.sort(Comparator.comparing(p -> p[0].group * 64L + Long.numberOfTrailingZeros(p[0].mask.longValue())));
// Iterate Logical Processors and use bitmasks to match packages, cores,
// and NUMA nodes. Perfmon instances are numa node + processor number, so we
// iterate by numa node so the returned list will properly index perfcounter
// numa/proc-per-numa indices with all numa nodes grouped together
numaNodes.sort(Comparator.comparing(n -> n.nodeNumber));
// Fetch the processorIDs from WMI
Map processorIdMap = new HashMap<>();
WmiResult processorId = Win32Processor.queryProcessorId();
// One entry for each package/socket
for (int pkg = 0; pkg < processorId.getResultCount(); pkg++) {
processorIdMap.put(pkg, WmiUtil.getString(processorId, ProcessorIdProperty.PROCESSORID, pkg));
}
List logProcs = new ArrayList<>();
Map corePkgMap = new HashMap<>();
Map pkgCpuidMap = new HashMap<>();
for (NUMA_NODE_RELATIONSHIP node : numaNodes) {
int nodeNum = node.nodeNumber;
int group = node.groupMask.group;
long mask = node.groupMask.mask.longValue();
// Processor numbers are uniquely identified by processor group and processor
// number on that group, which matches the bitmask.
int lowBit = Long.numberOfTrailingZeros(mask);
int hiBit = 63 - Long.numberOfLeadingZeros(mask);
for (int lp = lowBit; lp <= hiBit; lp++) {
if ((mask & (1L << lp)) != 0) {
int coreId = getMatchingCore(cores, group, lp);
int pkgId = getMatchingPackage(packages, group, lp);
corePkgMap.put(coreId, pkgId);
pkgCpuidMap.put(coreId, processorIdMap.getOrDefault(pkgId, ""));
LogicalProcessor logProc = new LogicalProcessor(lp, coreId, pkgId, nodeNum, group);
logProcs.add(logProc);
}
}
}
List physProcs = getPhysProcs(cores, coreEfficiencyMap, corePkgMap, pkgCpuidMap);
return new Triplet<>(logProcs, physProcs, orderedProcCaches(caches));
}
private static List getPhysProcs(List cores,
Map coreEfficiencyMap, Map corePkgMap,
Map coreCpuidMap) {
List physProcs = new ArrayList<>();
for (int coreId = 0; coreId < cores.size(); coreId++) {
int efficiency = coreEfficiencyMap.getOrDefault(cores.get(coreId), 0);
String cpuid = coreCpuidMap.getOrDefault(coreId, "");
int pkgId = corePkgMap.getOrDefault(coreId, 0);
physProcs.add(new PhysicalProcessor(pkgId, coreId, efficiency, cpuid));
}
return physProcs;
}
private static int getMatchingPackage(List packages, int g, int lp) {
for (int i = 0; i < packages.size(); i++) {
for (int j = 0; j < packages.get(i).length; j++) {
if ((packages.get(i)[j].mask.longValue() & (1L << lp)) != 0 && packages.get(i)[j].group == g) {
return i;
}
}
}
return 0;
}
private static int getMatchingCore(List cores, int g, int lp) {
for (int j = 0; j < cores.size(); j++) {
if ((cores.get(j).mask.longValue() & (1L << lp)) != 0 && cores.get(j).group == g) {
return j;
}
}
return 0;
}
/*
* Non-EX version for pre-Win7
*/
/**
* Get a list of logical processors on this machine
*
* @return A list of logical processors
*/
public static Triplet, List, List> getLogicalProcessorInformation() {
// Collect a list of logical processors on each physical core and package.
List packageMaskList = new ArrayList<>();
List coreMaskList = new ArrayList<>();
WinNT.SYSTEM_LOGICAL_PROCESSOR_INFORMATION[] processors = Kernel32Util.getLogicalProcessorInformation();
for (SYSTEM_LOGICAL_PROCESSOR_INFORMATION proc : processors) {
if (proc.relationship == WinNT.LOGICAL_PROCESSOR_RELATIONSHIP.RelationProcessorPackage) {
packageMaskList.add(proc.processorMask.longValue());
} else if (proc.relationship == WinNT.LOGICAL_PROCESSOR_RELATIONSHIP.RelationProcessorCore) {
coreMaskList.add(proc.processorMask.longValue());
}
}
// Sort the list (natural ordering) so core and package numbers
// increment as expected.
coreMaskList.sort(null);
packageMaskList.sort(null);
// Assign logical processors to cores and packages
List logProcs = new ArrayList<>();
for (int core = 0; core < coreMaskList.size(); core++) {
long coreMask = coreMaskList.get(core);
// Lowest and Highest set bits, indexing from 0
int lowBit = Long.numberOfTrailingZeros(coreMask);
int hiBit = 63 - Long.numberOfLeadingZeros(coreMask);
// Create logical processors for this core
for (int i = lowBit; i <= hiBit; i++) {
if ((coreMask & (1L << i)) != 0) {
LogicalProcessor logProc = new LogicalProcessor(i, core,
LogicalProcessorInformation.getBitMatchingPackageNumber(packageMaskList, i));
logProcs.add(logProc);
}
}
}
return new Triplet<>(logProcs, null, null);
}
/**
* Iterate over the package mask list and find a matching mask index
*
* @param packageMaskList The list of bitmasks to iterate
* @param logProc The bit to find matching mask
* @return The index of the list which matched the bit
*/
private static int getBitMatchingPackageNumber(List packageMaskList, int logProc) {
for (int i = 0; i < packageMaskList.size(); i++) {
if ((packageMaskList.get(i).longValue() & (1L << logProc)) != 0) {
return i;
}
}
return 0;
}
}
