protected internal override PagerState AllocateMorePages(long newLength)
{
if (DisposeOnceRunner.Disposed)
{
ThrowAlreadyDisposedException();
}
var newLengthAfterAdjustment = NearestSizeToAllocationGranularity(newLength);
if (newLengthAfterAdjustment <= _totalAllocationSize)
{
return(null);
}
var allocationSize = newLengthAfterAdjustment - _totalAllocationSize;
Win32NativeFileMethods.SetFileLength(_handle, _totalAllocationSize + allocationSize);
PagerState newPagerState = CreatePagerState();
newPagerState.CopyPrefetchState(this._pagerState);
SetPagerState(newPagerState);
PagerState.DebugVerify(newLengthAfterAdjustment);
_totalAllocationSize += allocationSize;
NumberOfAllocatedPages = _totalAllocationSize / Constants.Storage.PageSize;
return(newPagerState);
}
protected internal override PagerState AllocateMorePages(long newLength)
{
if (DisposeOnceRunner.Disposed)
{
ThrowAlreadyDisposedException();
}
var newLengthAfterAdjustment = NearestSizeToPageSize(newLength);
if (newLengthAfterAdjustment <= _totalAllocationSize)
{
return(null);
}
var allocationSize = newLengthAfterAdjustment - _totalAllocationSize;
PosixHelper.AllocateFileSpace(_options, _fd, _totalAllocationSize + allocationSize, FileName.FullPath);
if (DeleteOnClose == false && _isSyncDirAllowed && Syscall.SyncDirectory(FileName.FullPath) == -1)
{
var err = Marshal.GetLastWin32Error();
Syscall.ThrowLastError(err);
}
PagerState newPagerState = CreatePagerState();
if (newPagerState == null)
{
var errorMessage = string.Format(
"Unable to allocate more pages - unsuccessfully tried to allocate continuous block of virtual memory with size = {0:##,###;;0} bytes",
(_totalAllocationSize + allocationSize));
throw new OutOfMemoryException(errorMessage);
}
newPagerState.DebugVerify(newLengthAfterAdjustment);
newPagerState.CopyPrefetchState(this._pagerState);
SetPagerState(newPagerState);
_totalAllocationSize += allocationSize;
NumberOfAllocatedPages = _totalAllocationSize / Constants.Storage.PageSize;
return(newPagerState);
}
protected internal override PagerState AllocateMorePages(long newLength)
{
if (DisposeOnceRunner.Disposed)
{
ThrowAlreadyDisposedException();
}
var newLengthAfterAdjustment = NearestSizeToPageSize(newLength);
if (newLengthAfterAdjustment <= _totalAllocationSize)
{
return(null);
}
var rc = rvn_allocate_more_space(newLengthAfterAdjustment, _handle, out var newAddress, out var errorCode);
if (rc != FailCodes.Success)
{
PalHelper.ThrowLastError(rc, errorCode, $"can't allocate more pages (rc={rc}) for '{FileName.FullPath}'. Requested {newLength} (adjusted to {newLengthAfterAdjustment})");
}
// TODO : Get rid of allocation info
var allocationInfo = new PagerState.AllocationInfo
{
BaseAddress = (byte *)newAddress,
Size = newLengthAfterAdjustment,
MappedFile = null
};
var newPagerState = new PagerState(this, Options.PrefetchSegmentSize, Options.PrefetchResetThreshold, allocationInfo);
newPagerState.DebugVerify(newLengthAfterAdjustment);
newPagerState.CopyPrefetchState(_pagerState);
SetPagerState(newPagerState);
_totalAllocationSize = newLengthAfterAdjustment;
NumberOfAllocatedPages = _totalAllocationSize / Constants.Storage.PageSize;
return(newPagerState);
}
