From 2f7c62a4c312ae6c0d2c6ae52cb06a73c553c2c3 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Sat, 8 Jun 2013 19:37:53 +0300
Subject: Add cpu features detection.
---
src/utils/cpu.cpp | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/utils/cpu.h | 44 ++++++++++++++++++++++
2 files changed, 153 insertions(+)
create mode 100644 src/utils/cpu.cpp
create mode 100644 src/utils/cpu.h
(limited to 'src/utils')
diff --git a/src/utils/cpu.cpp b/src/utils/cpu.cpp
new file mode 100644
index 000000000..bef0d653d
--- /dev/null
+++ b/src/utils/cpu.cpp
@@ -0,0 +1,109 @@
+/*
+ * The ManaPlus Client
+ * Copyright (C) 2013 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus 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"
+
+#include "utils/stringutils.h"
+
+#include "resources/resourcemanager.h"
+
+#include "debug.h"
+
+int mCpuFlags = 0;
+
+void Cpu::detect()
+{
+#ifdef __GNUC__
+ __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;
+ printFlags();
+#elif defined(__linux__) || defined(__linux)
+ FILE *file = fopen("/proc/cpuinfo", "r");
+ char buf[1001];
+ if (!file)
+ return;
+ while (fgets(buf, 1000, file))
+ {
+ 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;
+ }
+ fclose(file);
+ printFlags();
+ return;
+ }
+ }
+ fclose(file);
+ logger->log("cpu features was not detected");
+#endif
+}
+
+void Cpu::printFlags()
+{
+ std::string str = "CPU features:";
+ if (mCpuFlags & FEATURE_MMX)
+ str.append(" mmx");
+ if (mCpuFlags & FEATURE_SSE)
+ str.append(" sse");
+ if (mCpuFlags & FEATURE_SSE2)
+ str.append(" sse2");
+ if (mCpuFlags & FEATURE_SSSE3)
+ str.append(" ssse3");
+ if (mCpuFlags & FEATURE_SSE4)
+ str.append(" sse4");
+ if (mCpuFlags & FEATURE_SSE42)
+ str.append(" sse4_2");
+ logger->log(str);
+}
diff --git a/src/utils/cpu.h b/src/utils/cpu.h
new file mode 100644
index 000000000..88d35933d
--- /dev/null
+++ b/src/utils/cpu.h
@@ -0,0 +1,44 @@
+/*
+ * The ManaPlus Client
+ * Copyright (C) 2013 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus 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/>.
+ */
+
+#ifndef UTILD_CPU_H
+#define UTILD_CPU_H
+
+#include "localconsts.h"
+
+namespace Cpu
+{
+ enum
+ {
+ FEATURE_EMPTY = 0,
+ FEATURE_MMX = 1,
+ FEATURE_SSE = 2,
+ FEATURE_SSE2 = 4,
+ FEATURE_SSSE3 = 8,
+ FEATURE_SSE4 = 16,
+ FEATURE_SSE42 = 32
+ };
+
+ void detect();
+
+ void printFlags();
+} // namespace CPU
+
+#endif // UTILD_CPU_H
--
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