//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public SingleFilePageSwapper(java.io.File file, org.neo4j.io.fs.FileSystemAbstraction fs, int filePageSize, org.neo4j.io.pagecache.PageEvictionCallback onEviction, boolean noChannelStriping) throws java.io.IOException
public SingleFilePageSwapper(File file, FileSystemAbstraction fs, int filePageSize, PageEvictionCallback onEviction, bool noChannelStriping)
{
this._fs = fs;
this._file = file;
if (noChannelStriping)
{
this._channelStripeCount = 1;
this._channelStripeMask = StripeMask(_channelStripeCount);
}
else
{
this._channelStripeCount = _globalChannelStripeCount;
this._channelStripeMask = _globalChannelStripeMask;
}
this._channels = new StoreChannel[_channelStripeCount];
for (int i = 0; i < _channelStripeCount; i++)
{
_channels[i] = fs.Open(file, OpenMode.READ_WRITE);
}
this._filePageSize = filePageSize;
this._onEviction = onEviction;
IncreaseFileSizeTo(_channels[TOKEN_CHANNEL_STRIPE].size());
try
{
AcquireLock();
}
catch (IOException e)
{
CloseAndCollectExceptions(0, e);
}
_hasPositionLock = _channels[0].GetType() == typeof(StoreFileChannel) && StoreFileChannelUnwrapper.unwrap(_channels[0]).GetType() == typeof(FileChannelImpl);
}
public override void Evicted(long filePageId)
{
PageEvictionCallback callback = this._onEviction;
if (callback != null)
{
callback.OnEvict(filePageId);
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.io.pagecache.PageSwapper createPageSwapper(java.io.File file, int filePageSize, org.neo4j.io.pagecache.PageEvictionCallback onEviction, boolean createIfNotExist, boolean noChannelStriping) throws java.io.IOException
public override PageSwapper CreatePageSwapper(File file, int filePageSize, PageEvictionCallback onEviction, bool createIfNotExist, bool noChannelStriping)
{
if (!_fs.fileExists(file))
{
if (createIfNotExist)
{
_fs.create(file).close();
}
else
{
throw new NoSuchFileException(file.Path, null, "Cannot map non-existing file");
}
}
return(new SingleFilePageSwapper(file, _fs, filePageSize, onEviction, noChannelStriping));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public synchronized void close() throws java.io.IOException
public override void Close()
{
lock (this)
{
_closed = true;
try
{
CloseAndCollectExceptions(0, null);
}
finally
{
// Eagerly relinquish our reference to the onEviction callback, because even though
// we've closed the PagedFile at this point, there are likely still pages in the cache that are bound to
// this swapper, and will stay bound, until the eviction threads eventually gets around to kicking them out.
// It is especially important to null out the onEviction callback field, because it is in turn holding on to
// the striped translation table, which can be a rather large structure.
_onEviction = null;
}
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.io.pagecache.PageSwapper createPageSwapper(java.io.File file, int filePageSize, org.neo4j.io.pagecache.PageEvictionCallback onEviction, boolean createIfNotExist, boolean noChannelStriping) throws java.io.IOException
public override PageSwapper CreatePageSwapper(File file, int filePageSize, PageEvictionCallback onEviction, bool createIfNotExist, bool noChannelStriping)
{
// This will be called early in the startup sequence. Notifies that we can call stop on the server.
_semaphore.release();
return(base.CreatePageSwapper(file, filePageSize, onEviction, createIfNotExist, noChannelStriping));
}
