bytedeco/javacpp

How to change the callback function to a static call?

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#346 opened on Sep 29, 2019

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 (8 comments) (0 reactions) (0 assignees)Java (4,279 stars) (620 forks)batch import
enhancementhelp wanted

Description

I have a C++ class which has a callback function, and this function is implemented in JAVA. To improve performance, I want to change this function into JAVA static method.

Contributor guide

Tech stack
javacpp
Domain
backendperformance
Issue type
performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
JavaC++javacpp basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Review the existing comments on the issue for potential solutions or suggestions. Investigate how javacpp handles callbacks and static methods in its documentation and examples, particularly the 'Callback' and 'FunctionPointer' classes. Consider modifying the Java callback method to be static and adjusting the C++ side accordingly to reduce JNI overhead.
How to change the callback function to a static call? · bytedeco/javacpp#346 | Good First Issue