panama-foreign
QuickBuffers
| panama-foreign | QuickBuffers | |
|---|---|---|
| 14 | 6 | |
| 269 | 106 | |
| -0.7% | 0.9% | |
| 10.0 | 8.7 | |
| 7 days ago | 3 months ago | |
| Java | Java | |
| GNU General Public License v3.0 only | Apache License 2.0 |
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panama-foreign
- Optimize Java to C string conversion by avoiding double copy
- QuickBuffers 1.1 released
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Java 20: A Sneak Peek on the Panama FFM API
Going to copy my Reddit comment over to HN because I think it's valuable:
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One of the coolest things that's been worked on (by this same author, no less!) isn't even in the article!
Per has written a pretty-printer for MemorySegments and ByteBuffers that can hex-dump memory or render memory/buffers as their "struct" representations given some MemoryLayout.
You can also customize it with your own printers, it's wicked cool and helps so much to debug buffers when working with them.
https://github.com/openjdk/panama-foreign/pull/695
What do I mean by that? Have a look at this comment for an image of a raw memory structure layout I represented with MemoryLayout, and the pretty-print rendering of it:
https://github.com/openjdk/panama-foreign/pull/695#issuecomm...
- Java 20 - Sneak Peek on the Foreign Function & Memory API (2nd preview)
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Use JNI or are there other alternates?
[Here's the project github](https://github.com/openjdk/panama-foreign)
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Panama foreign function overhead - how can it be improved?
I am not using any special flag (is there one?) but the overhead seems quite high, especially considering the explanation on how these methods are compiled https://github.com/openjdk/panama-foreign/blob/foreign-jextract/doc/panama_ffi.md
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Possible to use Kotlin/Native to call Win API from Kotlin/JVM?
https://github.com/openjdk/panama-foreign/blob/foreign-jextract/doc/panama_jextract.md ..look at these examples
- It’s happening guys!
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JEP proposed to target JDK 18: 419: Foreign Function & Memory API (Second Incubator)
I found the full context for the change written up here https://github.com/openjdk/panama-foreign/pull/554
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Will scala-native run without a garbage collector?
Incentive for JVM devs? We know that C interoperability, malloc, free, structs are already supported on JVM natively since Java 14 with project panama's foreign-memory-api without JNI. I've been using sun.misc.Unsafe since Java8 and also LWJGL's C API.
QuickBuffers
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How do you package your Swing app?
+1 for Conveyor. We use it for several JavaFX applications, Java CLI tools, and even bundles of native applications (e.g. a C++ protobuf compiler bundled with a GraalVM native image plugin).
- Java Protobuf implementation suitable for real-time enviroments
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QuickBuffers 1.1 released
The project is currently still limited by a Java 8 runtime, so it's using sun.misc.Unsafe where it makes sense. The code you're looking for is in ByteUtil. It'd be impossible to be competitive with only using byte[] indexing.
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Any suggestions for good open source Java codebases to study(With below criteria)?
In case you are into serialization, I wrote MFL for working with matlab's .mat file format (focuses on providing a nice API around dynamic types), and QuickBuffers as a zero-allocation implementation for Protobuf (contains Java code generation and lots of performance tuning). Both should have a reasonable size to be interesting without being overwhelming.
What are some alternatives?
JNA - Java Native Access
FlatBuffers - FlatBuffers: Memory Efficient Serialization Library
LWJGL - LWJGL is a Java library that enables cross-platform access to popular native APIs useful in the development of graphics (OpenGL, Vulkan, bgfx), audio (OpenAL, Opus), parallel computing (OpenCL, CUDA) and XR (OpenVR, LibOVR, OpenXR) applications.
grpc_bench - Various gRPC benchmarks
SWIG - SWIG is a software development tool that connects programs written in C and C++ with a variety of high-level programming languages.
flatbuffers-java-poc - Proof of Concept for an alternative Java implementation for FlatBuffers
jextract - https://openjdk.org/projects/code-tools
Disruptor - High Performance Inter-Thread Messaging Library
win32metadata - Tooling to generate metadata for Win32 APIs in the Windows SDK.
AssertJ - AssertJ is a library providing easy to use rich typed assertions
rust-bindgen - Automatically generates Rust FFI bindings to C (and some C++) libraries.
Introducing .NET Multi-platform App UI (MAUI) - .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.