bytedeco/javacpp

Unsafe get, put and array access

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#156 opened on Jan 2, 2017

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enhancementhelp wanted

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Description

Due to unsafe methods getting intensified it is faster than native. So perhaps it might be an idea to replace where appropriate with Unsafe use.

Also using Unsafe to access Java arrays is faster since there not no bound checking, memory fence and type checking.

Some native methods may be replaceable with pure Java with Unsafe.

Contributor guide

Research direction
Identify methods in the javacpp codebase that could benefit from using sun.misc.Unsafe for faster get/put and array access, and benchmark the performance improvements.
Tech stack
java
Domain
performance
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.
Half day
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.
Mostly clear
Prerequisites
Java
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25