139 lines
2.8 KiB
C++
Executable File
139 lines
2.8 KiB
C++
Executable File
// system detect
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//
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// Copyright (c) 2003 Jan Wassenberg
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//
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// This file is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This file is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// Contact info:
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// Jan.Wassenberg@stud.uni-karlsruhe.de
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// http://www.stud.uni-karlsruhe.de/~urkt/
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// things missing in POSIX, SDL, and OpenGL :P
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// large platform-specific routines (e.g. CPU or gfx card info)
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// are split out of here.
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#include "precompiled.h"
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#include "lib.h"
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#include "detect.h"
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#include "timer.h"
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#ifdef _M_IX86
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extern void ia32_get_cpu_info();
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#endif
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#ifdef _WIN32
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extern int win_get_gfx_info();
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extern int win_get_cpu_info();
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#endif
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extern "C" int ogl_get_gfx_info();
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//
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// memory
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//
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size_t tot_mem = 0;
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size_t avl_mem = 0;
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size_t page_size = 0;
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void get_mem_status()
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{
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#ifdef _SC_PAGESIZE
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if(!page_size)
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page_size = (size_t)sysconf(_SC_PAGESIZE);
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#endif
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// Sys V derived (GNU/Linux, Solaris)
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#ifdef _SC_AVPHYS_PAGES
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tot_mem = sysconf(_SC_PHYS_PAGES ) * page_size;
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avl_mem = sysconf(_SC_AVPHYS_PAGES) * page_size;
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// BSD / Mac OS X
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#elif HAVE_SYSCTL && defined(HW_PHYSMEM)
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size_t len = sizeof(tot_mem);
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int mib[2] = { CTL_HW, HW_PHYSMEM };
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sysctl(mib, 2, &tot_mem, &len, 0, 0);
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mib[1] = HW_USERMEM;
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sysctl(mib, 2, &avl_mem, &len, 0, 0);
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#endif
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}
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//
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// graphics card
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//
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char gfx_card[64] = "";
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char gfx_drv_ver[64] = "";
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// attempt to detect graphics card without OpenGL (in case ogl init fails,
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// or we want more detailed info). gfx_card[] is unchanged on failure.
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void get_gfx_info()
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{
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int ret = -1;
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// try platform-specific versions first: they return more
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// detailed information, and don't require OpenGL to be ready.
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#ifdef _WIN32
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ret = win_get_gfx_info();
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#endif
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// success; done.
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if(ret == 0)
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return;
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// the OpenGL version should always work, unless OpenGL isn't ready for use,
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// or we were called between glBegin and glEnd.
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ogl_get_gfx_info();
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}
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//
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// CPU
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//
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char cpu_type[64] = ""; // processor brand string is 48 chars
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double cpu_freq = 0.f;
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// -1 if detect not yet called, or cannot be determined
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int cpus = -1;
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int cpu_speedstep = -1;
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int cpu_smp = -1;
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// are there actually multiple physical processors,
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// not only logical hyperthreaded CPUs? relevant for wtime.
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static inline void get_cpu_info()
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{
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#ifdef _WIN32
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win_get_cpu_info();
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#endif
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#ifdef _M_IX86
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ia32_get_cpu_info();
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#endif
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}
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void detect()
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{
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get_mem_status();
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get_gfx_info();
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get_cpu_info();
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}
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