private static ulong GetAvailableMemory()
{
var meminfo = new Memorystatusex();
int temp;
meminfo.dwLength = 64; //此方法为手动Hack，按照填充规则计算大小，祝我好运
temp = GlobalMemoryStatusEx(ref meminfo); //实践证明，必须有人接收返回值，否则会报错
return(meminfo.ullAvailPhys / 1024 / 1024);
}
private static ulong GetTotalInstalledMemory()
{
var meminfo = new Memorystatusex();
int temp;
meminfo.dwLength = 64; //此方法为手动Hack，按照填充规则计算大小，祝我好运，希望有更好的办法（但是Unsafe的sizeof算符简直令人无力吐槽）
temp = GlobalMemoryStatusEx(ref meminfo); //实践证明，必须有人接收返回值，否则会报错
return(meminfo.ullTotalPhys / 1024 / 1024 / 1024);
}
[DllImport("kernel32.dll", EntryPoint = "GlobalMemoryStatusEx", CallingConvention = CallingConvention.StdCall)]//此处一定要用Ex，否则内存计算不全
private static extern int GlobalMemoryStatusEx(ref Memorystatusex lpBuffer);
