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using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Versioning;
using System.Text;
using Ryujinx.Common.Logging;
namespace Ryujinx.Common.SystemInfo
{
[SupportedOSPlatform("macos")]
class MacOSSystemInfo : SystemInfo
{
internal MacOSSystemInfo()
{
string cpuName = GetCpuidCpuName();
if (cpuName == null && sysctlbyname("machdep.cpu.brand_string", out cpuName) != 0)
{
cpuName = "Unknown";
}
ulong totalRAM = 0;
if (sysctlbyname("hw.memsize", ref totalRAM) != 0) // Bytes
{
totalRAM = 0;
}
CpuName = $"{cpuName} ; {LogicalCoreCount} logical";
RamTotal = totalRAM;
}
[DllImport("libSystem.dylib", CharSet = CharSet.Ansi, SetLastError = true)]
private static extern int sysctlbyname(string name, IntPtr oldValue, ref ulong oldSize, IntPtr newValue, ulong newValueSize);
private static int sysctlbyname(string name, IntPtr oldValue, ref ulong oldSize)
{
if (sysctlbyname(name, oldValue, ref oldSize, IntPtr.Zero, 0) == -1)
{
int err = Marshal.GetLastWin32Error();
Logger.Error?.Print(LogClass.Application, $"Cannot retrieve '{name}'. Error Code {err}");
return err;
}
return 0;
}
private static int sysctlbyname<T>(string name, ref T oldValue)
{
unsafe
{
ulong oldValueSize = (ulong)Unsafe.SizeOf<T>();
return sysctlbyname(name, (IntPtr)Unsafe.AsPointer(ref oldValue), ref oldValueSize);
}
}
private static int sysctlbyname(string name, out string oldValue)
{
oldValue = default;
ulong strSize = 0;
int res = sysctlbyname(name, IntPtr.Zero, ref strSize);
if (res == 0)
{
byte[] rawData = new byte[strSize];
unsafe
{
fixed (byte* rawDataPtr = rawData)
{
res = sysctlbyname(name, (IntPtr)rawDataPtr, ref strSize);
}
if (res == 0)
{
oldValue = Encoding.ASCII.GetString(rawData);
}
}
}
return res;
}
}
}
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