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/*
* The ManaVerse Client
* Copyright (C) 2013-2019 The ManaPlus Developers
*
* This file is part of The ManaVerse Client.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "utils/cpu.h"
#include "logger.h"
#if (defined(__amd64__) || defined(__i386__)) && defined(__GNUC__) \
&& (GCC_VERSION >= 40800) && !defined(ANDROID)
// nothing
#elif defined(__linux__) || defined(__linux)
#include "utils/foreach.h"
#include "utils/stringutils.h"
#endif // (defined(__amd64__) || defined(__i386__)) && defined(__GNUC__)
// && (GCC_VERSION >= 40800) && !defined(ANDROID)
#ifdef USE_SDL2
#include <SDL_cpuinfo.h>
#endif // USE_SDL2
#include "debug.h"
namespace
{
uint32_t mCpuFlags;
} // namespace
void Cpu::detect()
{
#if (defined(__amd64__) || defined(__i386__)) && defined(__GNUC__) \
&& (GCC_VERSION >= 40800) && !defined(ANDROID)
__builtin_cpu_init();
if (__builtin_cpu_supports ("mmx"))
mCpuFlags |= FEATURE_MMX;
if (__builtin_cpu_supports ("sse"))
mCpuFlags |= FEATURE_SSE;
if (__builtin_cpu_supports ("sse2"))
mCpuFlags |= FEATURE_SSE2;
if (__builtin_cpu_supports ("ssse3"))
mCpuFlags |= FEATURE_SSSE3;
if (__builtin_cpu_supports ("sse4.1"))
mCpuFlags |= FEATURE_SSE4;
if (__builtin_cpu_supports ("sse4.2"))
mCpuFlags |= FEATURE_SSE42;
if (__builtin_cpu_supports ("avx"))
mCpuFlags |= FEATURE_AVX;
if (__builtin_cpu_supports ("avx2"))
mCpuFlags |= FEATURE_AVX2;
printFlags();
#elif defined(__linux__) || defined(__linux)
FILE *file = fopen("/proc/cpuinfo", "r");
char buf[1001];
if (file == nullptr)
return;
while (fgets(buf, 1000, file) != nullptr)
{
std::string str = buf;
if (findFirst(str, "flags"))
{
size_t idx = str.find(':');
if (idx == std::string::npos)
continue;
str = str.substr(idx + 1);
trim(str);
StringVect vect;
splitToStringVector(vect, str, ' ');
FOR_EACH (StringVectCIter, it, vect)
{
const std::string &flag = *it;
if (flag == "mmx")
mCpuFlags |= FEATURE_MMX;
else if (flag == "sse")
mCpuFlags |= FEATURE_SSE;
else if (flag == "sse2")
mCpuFlags |= FEATURE_SSE2;
else if (flag == "ssse3")
mCpuFlags |= FEATURE_SSSE3;
else if (flag == "sse4_1")
mCpuFlags |= FEATURE_SSE4;
else if (flag == "sse4_2")
mCpuFlags |= FEATURE_SSE42;
else if (flag == "avx")
mCpuFlags |= FEATURE_AVX;
else if (flag == "avx2")
mCpuFlags |= FEATURE_AVX2;
}
fclose(file);
printFlags();
return;
}
}
fclose(file);
if (logger != nullptr)
logger->log("cpu features was not detected");
#else // OTHER
#ifdef USE_SDL2
if (SDL_HasMMX())
mCpuFlags |= FEATURE_MMX;
if (SDL_HasSSE())
mCpuFlags |= FEATURE_SSE;
if (SDL_HasSSE2())
mCpuFlags |= FEATURE_SSE2;
if (SDL_HasSSE3())
mCpuFlags |= FEATURE_SSSE3;
if (SDL_HasSSE41())
mCpuFlags |= FEATURE_SSE4;
if (SDL_HasSSE42())
mCpuFlags |= FEATURE_SSE42;
#if SDL_VERSION_ATLEAST(2, 0, 2)
if (SDL_HasAVX())
mCpuFlags |= FEATURE_AVX;
#endif // SDL_VERSION_ATLEAST(2, 0, 2)
#if SDL_VERSION_ATLEAST(2, 0, 4)
if (SDL_HasAVX2())
mCpuFlags |= FEATURE_AVX2;
#endif // SDL_VERSION_ATLEAST(2, 0, 4)
printFlags();
#else // USE_SDL2
if (logger)
logger->log("cpu features not supported");
#endif // USE_SDL2
#endif // (defined(__amd64__) || defined(__i386__)) && defined(__GNUC__)
// && (GCC_VERSION >= 40800) && !defined(ANDROID)
#if SDL_VERSION_ATLEAST(2, 0, 1)
logger->log("System ram size: %d", SDL_GetSystemRAM());
#endif // SDL_VERSION_ATLEAST(2, 0, 1)
}
void Cpu::printFlags()
{
if (logger == nullptr)
return;
std::string str("CPU features:");
if ((mCpuFlags & FEATURE_MMX) != 0U)
str.append(" mmx");
if ((mCpuFlags & FEATURE_SSE) != 0U)
str.append(" sse");
if ((mCpuFlags & FEATURE_SSE2) != 0U)
str.append(" sse2");
if ((mCpuFlags & FEATURE_SSSE3) != 0U)
str.append(" ssse3");
if ((mCpuFlags & FEATURE_SSE4) != 0U)
str.append(" sse4");
if ((mCpuFlags & FEATURE_SSE42) != 0U)
str.append(" sse4_2");
if ((mCpuFlags & FEATURE_AVX) != 0U)
str.append(" avx");
if ((mCpuFlags & FEATURE_AVX2) != 0U)
str.append(" avx2");
logger->log(str);
}
uint32_t Cpu::getFlags()
{
return mCpuFlags;
}
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