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using Ryujinx.Common.Logging;
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Versioning;
using System.Text;
namespace Ryujinx.UI.Common.SystemInfo
{
[SupportedOSPlatform("macos")]
partial class MacOSSystemInfo : SystemInfo
{
internal MacOSSystemInfo()
{
if (SysctlByName("kern.osversion", out string buildRevision) != 0)
{
buildRevision = "Unknown Build";
}
OsDescription = $"macOS {Environment.OSVersion.Version} ({buildRevision}) ({RuntimeInformation.OSArchitecture})";
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;
RamAvailable = GetVMInfoAvailableMemory();
}
static ulong GetVMInfoAvailableMemory()
{
var port = mach_host_self();
uint pageSize = 0;
var result = host_page_size(port, ref pageSize);
if (result != 0)
{
Logger.Error?.Print(LogClass.Application, $"Failed to query Available RAM. host_page_size() error = {result}");
return 0;
}
const int Flavor = 4; // HOST_VM_INFO64
uint count = (uint)(Marshal.SizeOf<VMStatistics64>() / sizeof(int)); // HOST_VM_INFO64_COUNT
VMStatistics64 stats = new();
result = host_statistics64(port, Flavor, ref stats, ref count);
if (result != 0)
{
Logger.Error?.Print(LogClass.Application, $"Failed to query Available RAM. host_statistics64() error = {result}");
return 0;
}
return (ulong)(stats.FreeCount + stats.InactiveCount) * pageSize;
}
private const string SystemLibraryName = "libSystem.dylib";
[LibraryImport(SystemLibraryName, SetLastError = true)]
private static partial int sysctlbyname([MarshalAs(UnmanagedType.LPStr)] 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;
}
[LibraryImport(SystemLibraryName, SetLastError = true)]
private static partial uint mach_host_self();
[LibraryImport(SystemLibraryName, SetLastError = true)]
private static partial int host_page_size(uint host, ref uint out_page_size);
[StructLayout(LayoutKind.Sequential, Pack = 8)]
struct VMStatistics64
{
public uint FreeCount;
public uint ActiveCount;
public uint InactiveCount;
public uint WireCount;
public ulong ZeroFillCount;
public ulong Reactivations;
public ulong Pageins;
public ulong Pageouts;
public ulong Faults;
public ulong CowFaults;
public ulong Lookups;
public ulong Hits;
public ulong Purges;
public uint PurgeableCount;
public uint SpeculativeCount;
public ulong Decompressions;
public ulong Compressions;
public ulong Swapins;
public ulong Swapouts;
public uint CompressorPageCount;
public uint ThrottledCount;
public uint ExternalPageCount;
public uint InternalPageCount;
public ulong TotalUncompressedPagesInCompressor;
}
[LibraryImport(SystemLibraryName, SetLastError = true)]
private static partial int host_statistics64(uint hostPriv, int hostFlavor, ref VMStatistics64 hostInfo64Out, ref uint hostInfo64OutCnt);
}
}
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