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#define EIGEN_INTERNAL_DEBUG_CACHE_QUERY
#include <iostream>
#include "../Eigen/Core"
using namespace Eigen;
using namespace std;
#define DUMP_CPUID(CODE) {\
int abcd[4]; \
abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0;\
EIGEN_CPUID(abcd, CODE, 0); \
std::cout << "The code " << CODE << " gives " \
<< (int*)(abcd[0]) << " " << (int*)(abcd[1]) << " " \
<< (int*)(abcd[2]) << " " << (int*)(abcd[3]) << " " << std::endl; \
}
int main()
{
cout << "Eigen's L1 = " << internal::queryL1CacheSize() << endl;
cout << "Eigen's L2/L3 = " << internal::queryTopLevelCacheSize() << endl;
int l1, l2, l3;
internal::queryCacheSizes(l1, l2, l3);
cout << "Eigen's L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl;
#ifdef EIGEN_CPUID
int abcd[4];
int string[8];
char* string_char = (char*)(string);
// vendor ID
EIGEN_CPUID(abcd,0x0,0);
string[0] = abcd[1];
string[1] = abcd[3];
string[2] = abcd[2];
string[3] = 0;
cout << endl;
cout << "vendor id = " << string_char << endl;
cout << endl;
int max_funcs = abcd[0];
internal::queryCacheSizes_intel_codes(l1, l2, l3);
cout << "Eigen's intel codes L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl;
if(max_funcs>=4)
{
internal::queryCacheSizes_intel_direct(l1, l2, l3);
cout << "Eigen's intel direct L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl;
}
internal::queryCacheSizes_amd(l1, l2, l3);
cout << "Eigen's amd L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl;
cout << endl;
// dump Intel direct method
if(max_funcs>=4)
{
l1 = l2 = l3 = 0;
int cache_id = 0;
int cache_type = 0;
do {
abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0;
EIGEN_CPUID(abcd,0x4,cache_id);
cache_type = (abcd[0] & 0x0F) >> 0;
int cache_level = (abcd[0] & 0xE0) >> 5; // A[7:5]
int ways = (abcd[1] & 0xFFC00000) >> 22; // B[31:22]
int partitions = (abcd[1] & 0x003FF000) >> 12; // B[21:12]
int line_size = (abcd[1] & 0x00000FFF) >> 0; // B[11:0]
int sets = (abcd[2]); // C[31:0]
int cache_size = (ways+1) * (partitions+1) * (line_size+1) * (sets+1);
cout << "cache[" << cache_id << "].type = " << cache_type << "\n";
cout << "cache[" << cache_id << "].level = " << cache_level << "\n";
cout << "cache[" << cache_id << "].ways = " << ways << "\n";
cout << "cache[" << cache_id << "].partitions = " << partitions << "\n";
cout << "cache[" << cache_id << "].line_size = " << line_size << "\n";
cout << "cache[" << cache_id << "].sets = " << sets << "\n";
cout << "cache[" << cache_id << "].size = " << cache_size << "\n";
cache_id++;
} while(cache_type>0 && cache_id<16);
}
// dump everything
std::cout << endl <<"Raw dump:" << endl;
for(int i=0; i<max_funcs; ++i)
DUMP_CPUID(i);
DUMP_CPUID(0x80000000);
DUMP_CPUID(0x80000001);
DUMP_CPUID(0x80000002);
DUMP_CPUID(0x80000003);
DUMP_CPUID(0x80000004);
DUMP_CPUID(0x80000005);
DUMP_CPUID(0x80000006);
DUMP_CPUID(0x80000007);
DUMP_CPUID(0x80000008);
#else
cout << "EIGEN_CPUID is not defined" << endl;
#endif
return 0;
}
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