//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: void fault(long pageRef, org.neo4j.io.pagecache.PageSwapper swapper, int swapperId, long filePageId, org.neo4j.io.pagecache.tracing.PageFaultEvent event) throws java.io.IOException
internal virtual void Fault(long pageRef, PageSwapper swapper, int swapperId, long filePageId, PageFaultEvent @event)
{
if (swapper == null)
{
throw SwapperCannotBeNull();
}
int currentSwapper = GetSwapperId(pageRef);
long currentFilePageId = GetFilePageId(pageRef);
if (filePageId == PageCursor.UNBOUND_PAGE_ID || !IsExclusivelyLocked(pageRef) || currentSwapper != 0 || currentFilePageId != PageCursor.UNBOUND_PAGE_ID)
{
throw CannotFaultException(pageRef, swapper, swapperId, filePageId, currentSwapper, currentFilePageId);
}
// Note: It is important that we assign the filePageId before we swap
// the page in. If the swapping fails, the page will be considered
// loaded for the purpose of eviction, and will eventually return to
// the freelist. However, because we don't assign the swapper until the
// swapping-in has succeeded, the page will not be considered bound to
// the file page, so any subsequent thread that finds the page in their
// translation table will re-do the page fault.
SetFilePageId(pageRef, filePageId); // Page now considered isLoaded()
long bytesRead = swapper.Read(filePageId, GetAddress(pageRef), _cachePageSize);
@event.AddBytesRead(bytesRead);
@event.CachePageId = ToId(pageRef);
SetSwapperId(pageRef, swapperId); // Page now considered isBoundTo( swapper, filePageId )
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ParameterizedTest @ValueSource(ints = {0, 1}) void mustHandleMischiefInPositionedVectoredRead(int noChannelStriping) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void MustHandleMischiefInPositionedVectoredRead(int noChannelStriping)
{
int bytesTotal = 512;
int bytesPerPage = 32;
int pageCount = bytesTotal / bytesPerPage;
sbyte[] data = new sbyte[bytesTotal];
ThreadLocalRandom.current().NextBytes(data);
PageSwapperFactory factory = CreateSwapperFactory();
factory.Open(Fs, Configuration.EMPTY);
File file = File;
PageSwapper swapper = CreateSwapper(factory, file, bytesTotal, NoCallback, true, Bool(noChannelStriping));
try
{
long page = CreatePage(data);
swapper.Write(0, page);
}
finally
{
swapper.Close();
}
RandomAdversary adversary = new RandomAdversary(0.5, 0.0, 0.0);
factory.Open(new AdversarialFileSystemAbstraction(adversary, Fs), Configuration.EMPTY);
swapper = CreateSwapper(factory, file, bytesPerPage, NoCallback, false, Bool(noChannelStriping));
long[] pages = new long[pageCount];
for (int i = 0; i < pageCount; i++)
{
pages[i] = CreatePage(bytesPerPage);
}
sbyte[] temp = new sbyte[bytesPerPage];
try
{
for (int i = 0; i < 10_000; i++)
{
foreach (long page in pages)
{
Clear(page);
}
assertThat(swapper.Read(0, pages, bytesPerPage, 0, pages.Length), @is(( long )bytesTotal));
for (int j = 0; j < pageCount; j++)
{
Array.Copy(data, j * bytesPerPage, temp, 0, bytesPerPage);
assertThat(Array(pages[j]), @is(temp));
}
}
}
finally
{
swapper.Close();
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ParameterizedTest @ValueSource(ints = {0, 1}) void mustHandleMischiefInPositionedVectoredWrite(int noChannelStriping) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void MustHandleMischiefInPositionedVectoredWrite(int noChannelStriping)
{
int bytesTotal = 512;
int bytesPerPage = 32;
int pageCount = bytesTotal / bytesPerPage;
sbyte[] data = new sbyte[bytesTotal];
ThreadLocalRandom.current().NextBytes(data);
long zeroPage = CreatePage(bytesPerPage);
Clear(zeroPage);
File file = File;
PageSwapperFactory factory = CreateSwapperFactory();
RandomAdversary adversary = new RandomAdversary(0.5, 0.0, 0.0);
factory.Open(new AdversarialFileSystemAbstraction(adversary, Fs), Configuration.EMPTY);
PageSwapper swapper = CreateSwapper(factory, file, bytesPerPage, NoCallback, true, Bool(noChannelStriping));
long[] writePages = new long[pageCount];
long[] readPages = new long[pageCount];
long[] zeroPages = new long[pageCount];
for (int i = 0; i < pageCount; i++)
{
writePages[i] = CreatePage(bytesPerPage);
PutBytes(writePages[i], data, 0, i * bytesPerPage, bytesPerPage);
readPages[i] = CreatePage(bytesPerPage);
zeroPages[i] = zeroPage;
}
try
{
for (int i = 0; i < 10_000; i++)
{
adversary.ProbabilityFactor = 0;
swapper.Write(0, zeroPages, 0, pageCount);
adversary.ProbabilityFactor = 1;
swapper.Write(0, writePages, 0, pageCount);
foreach (long readPage in readPages)
{
Clear(readPage);
}
adversary.ProbabilityFactor = 0;
assertThat(swapper.Read(0, readPages, bytesPerPage, 0, pageCount), @is(( long )bytesTotal));
for (int j = 0; j < pageCount; j++)
{
assertThat(Array(readPages[j]), @is(Array(writePages[j])));
}
}
}
finally
{
swapper.Close();
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ParameterizedTest @ValueSource(ints = {0, 1}) void mustZeroFillPageBeyondEndOfFile(int noChannelStriping) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void MustZeroFillPageBeyondEndOfFile(int noChannelStriping)
{
sbyte[] bytes = new sbyte[] { 1, 2, 3, 4, 5, 6 };
StoreChannel channel = Fs.create(File);
channel.WriteAll(Wrap(bytes));
channel.close();
PageSwapperFactory factory = CreateSwapperFactory();
PageSwapper swapper = CreateSwapper(factory, File, 4, null, false, Bool(noChannelStriping));
long target = CreatePage(4);
swapper.Read(1, target, SizeOfAsInt(target));
assertThat(Array(target), byteArray(new sbyte[] { 5, 6, 0, 0 }));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ParameterizedTest @ValueSource(ints = {0, 1}) void swappingInMustFillPageWithData(int noChannelStriping) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void SwappingInMustFillPageWithData(int noChannelStriping)
{
sbyte[] bytes = new sbyte[] { 1, 2, 3, 4 };
StoreChannel channel = Fs.create(File);
channel.WriteAll(Wrap(bytes));
channel.close();
PageSwapperFactory factory = CreateSwapperFactory();
PageSwapper swapper = CreateSwapper(factory, File, 4, null, false, Bool(noChannelStriping));
long target = CreatePage(4);
swapper.Read(0, target, SizeOfAsInt(target));
assertThat(Array(target), byteArray(bytes));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ParameterizedTest @ValueSource(ints = {0, 1}) void mustHandleMischiefInPositionedRead(int noChannelStriping) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void MustHandleMischiefInPositionedRead(int noChannelStriping)
{
int bytesTotal = 512;
sbyte[] data = new sbyte[bytesTotal];
ThreadLocalRandom.current().NextBytes(data);
PageSwapperFactory factory = CreateSwapperFactory();
factory.Open(Fs, Configuration.EMPTY);
File file = File;
PageSwapper swapper = CreateSwapper(factory, file, bytesTotal, NoCallback, true, Bool(noChannelStriping));
try
{
long page = CreatePage(data);
swapper.Write(0, page);
}
finally
{
swapper.Close();
}
RandomAdversary adversary = new RandomAdversary(0.5, 0.0, 0.0);
factory.Open(new AdversarialFileSystemAbstraction(adversary, Fs), Configuration.EMPTY);
swapper = CreateSwapper(factory, file, bytesTotal, NoCallback, false, Bool(noChannelStriping));
long page = CreatePage(bytesTotal);
try
{
for (int i = 0; i < 10_000; i++)
{
Clear(page);
assertThat(swapper.Read(0, page, SizeOfAsInt(page)), @is(( long )bytesTotal));
assertThat(Array(page), @is(data));
}
}
finally
{
swapper.Close();
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public long read(long filePageId, long bufferAddress, int bufferSize) throws java.io.IOException
public override long Read(long filePageId, long bufferAddress, int bufferSize)
{
return(@delegate.Read(filePageId, bufferAddress, bufferSize));
}
