da376e0237
Cycles uses code from some great open source projects, many thanks them: * BVH building and traversal code from NVidia's "Understanding the Efficiency of Ray Traversal on GPUs": http://code.google.com/p/understanding-the-efficiency-of-ray-traversal-on-gpus/ * Open Shading Language for a large part of the shading system: http://code.google.com/p/openshadinglanguage/ * Blender for procedural textures and a few other nodes. * Approximate Catmull Clark subdivision from NVidia Mesh tools: http://code.google.com/p/nvidia-mesh-tools/ * Sobol direction vectors from: http://web.maths.unsw.edu.au/~fkuo/sobol/ * Film response functions from: http://www.cs.columbia.edu/CAVE/software/softlib/dorf.php
105 lines
2.3 KiB
C++
105 lines
2.3 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "util_system.h"
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#include "util_types.h"
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#ifdef _WIN32
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#include <intrin.h>
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#include <windows.h>
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#elif defined(__APPLE__)
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#include <sys/sysctl.h>
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#include <sys/types.h>
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#else
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#include <unistd.h>
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#endif
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CCL_NAMESPACE_BEGIN
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int system_cpu_thread_count()
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{
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static uint count = 0;
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if(count > 0)
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return count;
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#ifdef _WIN32
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SYSTEM_INFO info;
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GetSystemInfo(&info);
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count = (uint)info.dwNumberOfProcessors;
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#elif defined(__APPLE__)
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size_t len = sizeof(count);
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int mib[2] = { CTL_HW, HW_NCPU };
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sysctl(mib, 2, &count, &len, NULL, 0);
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#else
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count = (uint)sysconf(_SC_NPROCESSORS_ONLN);
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#endif
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if(count < 1)
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count = 1;
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return count;
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}
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#ifndef _WIN32
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static void __cpuid(int data[4], int selector)
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{
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asm("cpuid" : "=a" (data[0]), "=b" (data[1]), "=c" (data[2]), "=d" (data[3]) : "a"(selector));
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}
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#endif
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static void replace_string(string& haystack, const string& needle, const string& other)
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{
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size_t i;
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while((i = haystack.find(needle)) != string::npos)
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haystack.replace(i, needle.length(), other);
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}
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string system_cpu_brand_string()
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{
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char buf[48];
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int result[4];
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__cpuid(result, 0x80000000);
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if(result[0] >= (int)0x80000004) {
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__cpuid((int*)(buf+0), 0x80000002);
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__cpuid((int*)(buf+16), 0x80000003);
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__cpuid((int*)(buf+32), 0x80000004);
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string brand = buf;
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/* make it a bit more presentable */
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replace_string(brand, "(TM)", "");
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replace_string(brand, "(R)", "");
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size_t i;
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if((i = brand.find(" ")) != string::npos)
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brand = brand.substr(0, i);
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return brand;
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}
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return "Unknown CPU";
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}
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CCL_NAMESPACE_END
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