mirror of https://github.com/PCSX2/pcsx2.git
102 lines
3.0 KiB
C++
102 lines
3.0 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2014 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the 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 along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#if defined(__APPLE__)
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#include <cstring>
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#include <cstdlib>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <mach/mach_time.h>
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#include <wx/string.h>
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#include "common/Pcsx2Types.h"
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#include "common/General.h"
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// Darwin (OSX) is a bit different from Linux when requesting properties of
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// the OS because of its BSD/Mach heritage. Helpfully, most of this code
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// should translate pretty well to other *BSD systems. (e.g.: the sysctl(3)
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// interface).
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//
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// For an overview of all of Darwin's sysctls, check:
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// https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man3/sysctl.3.html
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// Return the total physical memory on the machine, in bytes. Returns 0 on
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// failure (not supported by the operating system).
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u64 GetPhysicalMemory()
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{
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u64 getmem = 0;
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size_t len = sizeof(getmem);
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int mib[] = {CTL_HW, HW_MEMSIZE};
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if (sysctl(mib, std::size(mib), &getmem, &len, NULL, 0) < 0)
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perror("sysctl:");
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return getmem;
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}
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static u64 tickfreq;
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void InitCPUTicks()
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{
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mach_timebase_info_data_t info;
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if (mach_timebase_info(&info) != KERN_SUCCESS)
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abort();
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tickfreq = (u64)1e9 * (u64)info.denom / (u64)info.numer;
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}
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// returns the performance-counter frequency: ticks per second (Hz)
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//
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// usage:
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// u64 seconds_passed = GetCPUTicks() / GetTickFrequency();
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// u64 millis_passed = (GetCPUTicks() * 1000) / GetTickFrequency();
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//
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// NOTE: multiply, subtract, ... your ticks before dividing by
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// GetTickFrequency() to maintain good precision.
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u64 GetTickFrequency()
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{
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return tickfreq;
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}
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// return the number of "ticks" since some arbitrary, fixed time in the
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// past. On OSX x86(-64), this is actually the number of nanoseconds passed,
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// because mach_timebase_info.numer == denom == 1. So "ticks" ==
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// nanoseconds.
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u64 GetCPUTicks()
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{
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return mach_absolute_time();
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}
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static std::string sysctl_str(int category, int name)
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{
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char buf[32];
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size_t len = sizeof(buf);
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int mib[] = {category, name};
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sysctl(mib, std::size(mib), buf, &len, nullptr, 0);
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return std::string(buf, len > 0 ? len - 1 : 0);
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}
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std::string GetOSVersionString()
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{
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std::string type = sysctl_str(CTL_KERN, KERN_OSTYPE);
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std::string release = sysctl_str(CTL_KERN, KERN_OSRELEASE);
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std::string arch = sysctl_str(CTL_HW, HW_MACHINE);
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return type + " " + release + " " + arch;
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}
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void ScreensaverAllow(bool allow)
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{
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// no-op
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}
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#endif
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