[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: immutable string type
|
From: |
Bruno Haible |
|
Subject: |
Re: immutable string type |
|
Date: |
Sun, 29 Dec 2019 10:29:53 +0100 |
|
User-agent: |
KMail/5.1.3 (Linux/4.4.0-170-generic; KDE/5.18.0; x86_64; ; ) |
Ben Pfaff wrote:
> This sort of thing won't work on systems with virtually indexed caches,
> at least not without inserting explicit flushes.
Good point. Yes, explicit data cache flushing instructions or - in the worst
case - system calls are necessary.
> I don't know whether
> virtually indexed caches still exist in the wild.
Yes, data caches are indexed by virtual address, not by physical address, on
many platforms. That makes the common case of a cache lookup faster.
Bruno