// Primary constructor
//
internal DirectByteBuffer(int cap) : base(-1, 0, cap, cap) // package-private
{
bool pa = VM.DirectMemoryPageAligned;
int ps = Bits.PageSize();
long size = System.Math.Max(1L, (long)cap + (pa ? ps : 0));
Bits.ReserveMemory(size, cap);
long @base = 0;
try
{
@base = @unsafe.allocateMemory(size);
}
catch (OutOfMemoryError x)
{
Bits.UnreserveMemory(size, cap);
throw x;
}
@unsafe.setMemory(@base, size, (sbyte)0);
if (pa && (@base % ps != 0))
{
// Round up to page boundary
Address = @base + ps - (@base & (ps - 1));
}
else
{
Address = @base;
}
Cleaner_Renamed = Cleaner.create(this, new Deallocator(@base, size, cap));
Att = null;
}