Previously the test results were only attached to passing builds, which is, like, the opposite of useful.
Also finally figured out how to nerf the local docker layer cache.
Recorded this new knowledge as make commands.
Instead use Mockito to implement the throwing behaviour on the buffers in those tests.
Sadly Mockito cannot spy or mock our Buffer implementation classes, and does not allow mocking an interface while spying on an implementation, so we have to do a more complicated dance with our mocking.
This supports more use cases.
The ensureWritable method can now amortise its allocation cost by allocating more than what is strictly necessary to satisfy the immediate call.
The bifurcate method can now split at a given offset.
Motivation:
Derefs are not necessarily their referents.
This is the case for Send, for instance.
Modification:
The Deref.isInstanceOf method is renamed to referentIsInstanceOf.
And a Send.isSendOf method has been added, that simplifies the check for sends, since it could be the case that one also needs to check if the object in question is also a Send instance.
Result:
Cleaner code that is easier to read, when working with Sends.
This fixes https://github.com/netty/netty-incubator-buffer-api/issues/46
Motivation:
When a build fails, the number one priority is figuring out why.
Having surefire test reports readily available on the Github Actions page will make this easier.
Modification:
Add a build step that uploads surefire test reports and attaches them as a check to the PR.
Result:
Easier to diagnose test failures on PRs.
Then run those tests in independent surefire forks.
This should allow Maven to hold on to less test metadata, and cope better with the large number of tests.
Motivation:
When Unsafe is available, we can supposedly do certain things faster than when it is not.
Modification:
Add a Buffer implementation that take advantage of sun.misc.Unsafe.
It has not yet been verified if this is faster in any way than, say the ByteBuffer implementation or the MemorySegment implementation.
Result:
Another Buffer implementation that can be used when Unsafe is available.
Motivation:
The untethered memory allocated by ensureWritable in a direct MemorySegment based non-pooled Buffer would be allocated without having a Cleaner attached to its ResourceScope.
This could cause that memory to leak if the Buffer instance was cast aside.
Modification:
ManagedBufferAllocator now makes sure to attach a cleaner to the buffer and its memory segment, when allocating untethered memory.
Result:
The BufferTest$CleanerTests now pass.
Motivation:
The jextract branch is currently suffering from upstream compilation
errors.
And we don't need jextract - memaccess+abi is enough.
Modification:
Avoid checking out the jextract branch of panama by default, and instead
explicitly check out the foreign-memaccess+abi branch when we clone the
JDK.
Result:
Our build should now be able to proceed again.
Motivation:
We need a new implementation of our new API that supports Java 11, since that is what Netty 5 will most likely baseline on.
We also need an implementation that does not rely on Unsafe.
This leaves us with ByteBuffer as the underlying currency of memory.
Modification:
- Add a NioBuffer implementation and associated supporting classes.
- The entry-point for this is a new MemoryManagers API, which is used to pick the implementation and provide the on-/off-heap MemoryManager implementations.
- Add a mechanism to configure/override which MemoryManagers implementation to use.
- The MemoryManagers implementations are service-loadable, so new ones can be discovered at runtime.
- The existing MemorySegment based implementation also get a MemoryManagers implementation.
- Expand the BufferTest to include all combinations of all implementations. We now run 360.000 tests in BufferTest.
- Some common infrastructure, like ArcDrop, is moved to its own package.
- Add a module-info.java to control the service loading, and the visibility in the various packages.
- Some pom.xml file updates to support our now module based project.
Result:
We have an implementation that should work on Java 11, but we currently don't build or test on 11.
More work needs to happen before that is a reality.
