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#include "cpucache.h"
#include "common/mallocHelper.h"
#include "common/windows/nt.h"
const char* ffDetectCPUCache(FFCPUCacheResult* result) {
LOGICAL_PROCESSOR_RELATIONSHIP lpr = RelationCache;
DWORD length = 0;
NtQuerySystemInformationEx(SystemLogicalProcessorAndGroupInformation, &lpr, sizeof(lpr), NULL, 0, &length);
if (length == 0) {
return "GetLogicalProcessorInformationEx(RelationCache, NULL, &length) failed";
}
SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX* FF_AUTO_FREE
pProcessorInfo = (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX*) malloc(length);
if (!NT_SUCCESS(NtQuerySystemInformationEx(SystemLogicalProcessorAndGroupInformation, &lpr, sizeof(lpr), pProcessorInfo, length, &length))) {
return "GetLogicalProcessorInformationEx(RelationCache, pProcessorInfo, &length) failed";
}
for (
SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX* ptr = pProcessorInfo;
(uint8_t*) ptr < ((uint8_t*) pProcessorInfo) + length;
ptr = (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX*) (((uint8_t*) ptr) + ptr->Size)) {
if (__builtin_expect(ptr->Relationship == RelationCache && ptr->Cache.Level > 0 && ptr->Cache.Level <= 4, true)) {
FFCPUCacheType cacheType = 0;
switch (ptr->Cache.Type) {
case CacheUnified:
cacheType = FF_CPU_CACHE_TYPE_UNIFIED;
break;
case CacheInstruction:
cacheType = FF_CPU_CACHE_TYPE_INSTRUCTION;
break;
case CacheData:
cacheType = FF_CPU_CACHE_TYPE_DATA;
break;
case CacheTrace:
cacheType = FF_CPU_CACHE_TYPE_TRACE;
break;
default:
break;
}
ffCPUCacheAddItem(result, ptr->Cache.Level, ptr->Cache.CacheSize, ptr->Cache.LineSize, cacheType);
}
}
return NULL;
}
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