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using System;
using System.IO;
using System.Runtime.InteropServices;
using AOT;
using Epic.OnlineServices;
using Epic.OnlineServices.Platform;
public static class EOSNativeHelper
{
#if UNITY_STANDALONE_WIN
[DllImport("kernel32", EntryPoint = "LoadLibrary", SetLastError = true, CharSet = CharSet.Unicode)]
private static extern IntPtr LoadLibraryNative(string lpFileName);
[DllImport("kernel32", SetLastError = true, CharSet = CharSet.Unicode)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool SetDllDirectory(string lpPathName);
public static IntPtr LoadLibrary(string lpFileName)
{
string lpPathName = Path.GetDirectoryName(lpFileName);
lpFileName = Path.GetFileName(lpFileName);
SetDllDirectory(lpPathName.Replace('/', '\\'));
return LoadLibraryNative(lpFileName);
}
[DllImport("kernel32", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool FreeLibrary(IntPtr hModule);
[DllImport("kernel32")]
public static extern IntPtr GetProcAddress(IntPtr hModule, string procedureName);
#else
[MonoPInvokeCallback(typeof(AllocateMemoryFunc))]
public static IntPtr AllocateMemory(UIntPtr size, UIntPtr alignment)
{
return Marshal.AllocHGlobal((IntPtr)size.ToUInt64());
//return HeapAlloc(GetProcessHeap(), 0, size);
}
[MonoPInvokeCallback(typeof(ReallocateMemoryFunc))]
public static IntPtr ReallocateMemory(IntPtr pointer, UIntPtr size, UIntPtr alignment)
{
// EOS will sometimes request a reallocation for a null pointer, so we need to specifically handle that
if (pointer == IntPtr.Zero)
return Marshal.AllocHGlobal((IntPtr)size.ToUInt64());
return Marshal.ReAllocHGlobal(pointer, (IntPtr)size.ToUInt64());
// if (pointer == IntPtr.Zero)
// return HeapAlloc(GetProcessHeap(), 0, size);
//
// return HeapReAlloc(GetProcessHeap(), 0, pointer, size);
}
[MonoPInvokeCallback(typeof(ReleaseMemoryFunc))]
public static void ReleaseMemory(IntPtr pointer)
{
Marshal.FreeHGlobal(pointer);
// HeapFree(GetProcessHeap(), 0, pointer);
}
[DllImport("kernel32", SetLastError = true)]
private static extern IntPtr GetProcessHeap();
[DllImport("kernel32")]
private static extern IntPtr HeapAlloc(IntPtr hHeap, int dwFlags, IntPtr dwBytes);
[DllImport("kernel32")]
private static extern IntPtr HeapReAlloc(IntPtr hHeap, int dwFlags, IntPtr lpMem, IntPtr dwBytes);
[DllImport("kernel32")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool HeapFree(IntPtr hHeap, int dwFlags, IntPtr lpMem);
#endif
#if UNITY_PS4 || UNITY_PS5
[DllImport("PS5Utils.prx")]
public static extern void GetMemoryFunctions(out IntPtr allocFunc, out IntPtr reallocFunc, out IntPtr releaseFunc);
#endif
}