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///
/// @file cpu_info.cpp
/// @brief Detect the CPUs' cache sizes
///
/// Copyright (C) 2018 Kim Walisch, <kim.walisch@gmail.com>
///
/// This file is distributed under the BSD License. See the COPYING
/// file in the top level directory.
///
#include <primesieve/CpuInfo.hpp>
#include <iostream>
using namespace std;
using namespace primesieve;
int main()
{
const CpuInfo cpu;
string error = cpu.getError();
if (!error.empty())
{
cerr << "Error: " << error << endl;
return 1;
}
if (!cpu.hasCpuCores() &&
cpu.cpuCores() > 0)
{
cerr << "Invalid CPU cores: " << cpu.cpuCores() << endl;
return 1;
}
if (!cpu.hasCpuThreads() &&
cpu.cpuThreads() > 0)
{
cerr << "Invalid CPU threads: " << cpu.cpuThreads() << endl;
return 1;
}
if (!cpu.hasL1Cache() &&
cpu.l1CacheSize() > 0)
{
cerr << "Invalid L1 cache size: " << cpu.l1CacheSize() << endl;
return 1;
}
if (!cpu.hasL2Cache() &&
cpu.l2CacheSize() > 0)
{
cerr << "Invalid L2 cache size: " << cpu.l2CacheSize() << endl;
return 1;
}
if (!cpu.hasL3Cache() &&
cpu.l3CacheSize() > 0)
{
cerr << "Invalid L3 cache size: " << cpu.l3CacheSize() << endl;
return 1;
}
if (!cpu.hasL1Sharing() &&
cpu.l1Sharing() > 0)
{
cerr << "Invalid L1 cache sharing: " << cpu.l1Sharing() << endl;
return 1;
}
if (!cpu.hasL2Sharing() &&
cpu.l2Sharing() > 0)
{
cerr << "Invalid L2 cache sharing: " << cpu.l2Sharing() << endl;
return 1;
}
if (!cpu.hasL3Sharing() &&
cpu.l3Sharing() > 0)
{
cerr << "Invalid L3 cache sharing: " << cpu.l3Sharing() << endl;
return 1;
}
if (!cpu.hasThreadsPerCore() &&
cpu.threadsPerCore() > 0)
{
cerr << "Invalid threads per CPU core: " << cpu.threadsPerCore() << endl;
return 1;
}
if (cpu.hasCpuName())
cout << cpu.cpuName() << endl;
cout << "L1 cache size: " << (cpu.l1CacheSize() >> 10) << " KiB" << endl;
cout << "L2 cache size: " << (cpu.l2CacheSize() >> 10) << " KiB" << endl;
cout << "L3 cache size: " << (cpu.l3CacheSize() >> 10) << " KiB" << endl;
if (cpu.hasL2Cache())
{
if (cpu.hasPrivateL2Cache())
cout << "L2 cache: private" << endl;
else
cout << "L2 cache: shared" << endl;
}
return 0;
}
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