Re: [go-nuts] Go without garbage collector

[Robert Engels]

Yes, and then the access and iteration is slower as it needs indirection to find the correct page. There is no free lunch.

The caveats about using mutable objects, sharing, and concurrency still apply.

A virtual machine environment has nothing to do with preventing direct memory access. You can do direct memory access in Java. I think what you are referring to is a "managed memory", or "safe memory" environment.

Honestly, this stuff is CS 101 (maybe 201), and we've strayed so far off the topic. I didn't write the code. Take it up with those Googlers if you think it's bad. I was using the code as a baseline to demonstrate improvements in JVM/GC technology, nothing more - and for that it was appropriate.

-----Original Message-----
From: ⚛ <0xe2.0x9a.0...@gmail.com>
Sent: Feb 14, 2020 11:37 AM
To: golang-nuts
Subject: Re: [go-nuts] Go without garbage collector

On Friday, February 14, 2020 at 6:24:08 PM UTC+1, Robert Engels wrote:

Yes, and when you store value objects in a vector and it is resized, it is very expensive as you need to make copies of "large objects", vs a "pointer to an object".

A paged vector neither copies nor moves the objects when it is resized.

Direct access to memory offers some optimization opportunities that are not directly possible in a virtual machine programming language.

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