The changes in #7189 caused an ambiguity between multi-subscribers and
normal subscribers, because the handle type no longer is sent to the network.
Multi-subscribers now go to the network with negative UIDs, normal
subscribers are positive UIDs. UID 0 is never used.
Each client has an incoming queue of ClientMessage.
In the read callback:
- Parse and process only ping messages and a limited number of messages;
anything else will get put into the queue and not processed
- If we queued some messages, we tell the network we stopped reading; this will
result in back-pressure if we are reading too slowly. We also start an idle
handle to process the queued messages.
In the idle handle callback:
- For each client, process just a few pending messages. This is performed in
round-robin fashion across all clients with pending messages
- When a client's queue becomes empty, we re-enable the network read
- When all client queues are empty, we stop the idle handle (so we don't spin)
For local client processing, we use round-robin processing for most cases (including FlushLocal),
but still do batch processing of all local changes for explicit network Flush() calls.
The stream can close (e.g. due to an error) while in the middle of writing. The close callback would immediately destroy the connection object, resulting in the writing code having a use-after-free. Fix this by deferring the deletion to the loop main using a single-shot timer.
This makes it easier to define schemas when the type name is non-trivial (e.g., templated structs).
This is breaking for a) custom struct implementations and b) anything calling `wpi::Struct<T>::GetTypeString(info...)` in C++ directly. In both cases, it's a simple translation: For A, rename `GetTypeString()` to `GetTypeName()` and remove the struct: at the beginning, and for B, use `wpi::GetStructTypeString<T>(info...)` instead.
Explicitly list required components when using FindJava and FindJNI
Consolidate find_package calls for Java, JNI, and OpenCV into the root CMakeLists.txt file
Remove references to main_lib_dest
Install missing generated headers
Flatten some if statements
Use LinkMacOSGUI macro instead of hand rolling it
Stop installing OpenCV libraries and an extra ntcorejni library; OpenCV JAR will still be installed to make it easy to use
Only print platform version on Windows
Prevent GUI modules from being built when wpimath is off, which would otherwise cause a build failure
Simplify build configuration checks
Clean up fieldImages JAR creation
Place built JARs in the same subdir as installed JARs
Remove unnecessary JAR includes
Remove extra directories in target_include_directories
Improve CMake docs
Uses enhanced instanceof (and simplify equals methods)
Uses switch expressions and arrow labels
Seal and finalize some Shuffleboard classes
Co-authored-by: Sam Carlberg <sam@slfc.dev>
