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Query Available RAM on macOS (#4000)

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mageven 2022-12-04 05:55:07 +05:30 committed by GitHub
parent 73a42c85c4
commit 933e5144a9
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1 changed files with 69 additions and 1 deletions
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70
Ryujinx.Common/SystemInfo/MacOSSystemInfo.cs
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@ -28,9 +28,39 @@ namespace Ryujinx.Common.SystemInfo
CpuName = $"{cpuName} ; {LogicalCoreCount} logical";
RamTotal = totalRAM;
RamAvailable = GetVMInfoAvailableMemory();
}
[DllImport("libSystem.dylib", CharSet = CharSet.Ansi, SetLastError = true)]
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";
[DllImport(SystemLibraryName, 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)
@ -85,5 +115,43 @@ namespace Ryujinx.Common.SystemInfo
return res;
}
[DllImport(SystemLibraryName, CharSet = CharSet.Ansi, SetLastError = true)]
private static extern uint mach_host_self();
[DllImport(SystemLibraryName, CharSet = CharSet.Ansi, SetLastError = true)]
private static extern 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;
}
[DllImport(SystemLibraryName, CharSet = CharSet.Ansi, SetLastError = true)]
private static extern int host_statistics64(uint host_priv, int host_flavor, ref VMStatistics64 host_info64_out, ref uint host_info64_outCnt);
}
}