elexis
43137fef3f
Differential Revision: https://code.wildfiregames.com/D716
Refs 09e974e1cb
Reviewed By: bb
Change in agreement with leper.
This was SVN commit r19899.
85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
/* Copyright (C) 2010 Wildfire Games.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* OS-specific support functions relating to CPU and memory
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*/
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#include "precompiled.h"
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#include "lib/sysdep/os_cpu.h"
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#include "lib/alignment.h"
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#include "lib/sysdep/smbios.h"
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#if OS_WIN
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# include "lib/sysdep/os/win/wcpu.h"
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#endif
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static const StatusDefinition osCpuStatusDefinitions[] = {
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{ ERR::OS_CPU_RESTRICTED_AFFINITY, L"Cannot set desired CPU affinity" }
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};
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STATUS_ADD_DEFINITIONS(osCpuStatusDefinitions);
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double os_cpu_ClockFrequency()
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{
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static double clockFrequency;
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if(clockFrequency != 0.0) // already initialized
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return clockFrequency;
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#if OS_WIN
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u32 freqMhz;
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if(wcpu_ReadFrequencyFromRegistry(freqMhz) == INFO::OK)
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return clockFrequency = freqMhz * 1e6;
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#endif
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const SMBIOS::Structures* structures = SMBIOS::GetStructures();
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if(structures->Processor_)
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return clockFrequency = structures->Processor_->maxFrequency * 1e6;
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return clockFrequency = -1.0; // unknown
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}
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size_t os_cpu_MemorySize()
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{
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static size_t memorySize;
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if(memorySize != 0) // already initialized
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return memorySize;
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memorySize = os_cpu_QueryMemorySize();
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// replace with the sum of all memory devices reported by SMBIOS if
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// that's within 10% of what the OS reported
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{
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const SMBIOS::Structures* structures = SMBIOS::GetStructures();
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u64 memorySizeBytes = 0;
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for(const SMBIOS::MemoryDevice* p = structures->MemoryDevice_; p; p = p->next)
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memorySizeBytes += p->size;
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const size_t memorySize2 = memorySizeBytes/MiB;
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if(9*memorySize/10 <= memorySize2 && memorySize2 <= 11*memorySize/10)
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memorySize = memorySize2;
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}
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return memorySize;
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}
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