public override unsafe void ReleaseAllocationInfo(byte *baseAddress, long size)
{
base.ReleaseAllocationInfo(baseAddress, size);
if (_supportsUnmapping == false)
{
return;
}
var ptr = new IntPtr(baseAddress);
if (DeleteOnClose)
{
if (Syscall.madvise(ptr, new UIntPtr((ulong)size), MAdvFlags.MADV_DONTNEED) != 0)
{
if (_log.IsInfoEnabled)
{
_log.Info($"Failed to madvise MDV_DONTNEED for {FileName?.FullPath}");
}
}
}
var result = Syscall.munmap(ptr, (UIntPtr)size);
if (result == -1)
{
var err = Marshal.GetLastWin32Error();
Syscall.ThrowLastError(err, "munmap " + FileName);
}
NativeMemory.UnregisterFileMapping(FileName.FullPath, ptr, size);
}
public override void ReleaseAllocationInfo(byte *baseAddress, long size)
{
base.ReleaseAllocationInfo(baseAddress, size);
if (Win32MemoryMapNativeMethods.UnmapViewOfFile(baseAddress) == false)
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "Failed to UnMapView of file " + FileName);
}
NativeMemory.UnregisterFileMapping(_fileInfo.FullName, new IntPtr(baseAddress), size);
}
private void CleanupMemory(TransactionState txState)
{
_globalMemory.EnterWriteLock();
try
{
foreach (var addr in txState.AddressesToUnload)
{
if (addr.Usages != 0)
{
continue;
}
if (!_globalMapping.TryGetValue(addr.StartPage, out var set))
{
continue;
}
if (!set.TryRemove(addr))
{
continue;
}
if (LockMemory && addr.Size > 0)
{
UnlockMemory32Bits((byte *)addr.Address, addr.Size);
}
Interlocked.Add(ref _totalMapped, -addr.Size);
UnmapViewOfFile((byte *)addr.Address);
NativeMemory.UnregisterFileMapping(addr.File, addr.Address, addr.Size);
if (set.Count == 0)
{
_globalMapping.TryRemove(addr.StartPage, out set);
}
}
}
finally
{
_globalMemory.ExitWriteLock();
}
}