Re: [gentoo-user] Is my system (really) using nptl

["Canek Peláez Valdés" <caneko@gmail.com>]

On Sat, Oct 13, 2012 at 2:50 PM, Michael Mol <mikemol@gmail.com> wrote:
[snip]
> (Well, I'm not certain that POSIX thinks of threads as parents to each other.

Hence the reason I put "parent" in quotes, and I specified "actually,
the thread that created it".

> There are *numerous* IPC mechanisms available on Linux. For starters,
> there are sockets (domain, IPv4, IPv6, et al), named pipes, signals,
> mmap()'d files, messaging, etc.

Yeah, none of them "easy and quickly" to use, or at least not if you
compare it with shared memory.

> When one process writes to the chunk of its address space mapped to
> that file, the other process can immediately see those changes. All
> that remains is sending the other process a signal or some other
> driving mechanism to wake it up and have it look at that region for
> updates.

Yup, certainly neither "easy" nor "quick".

> dbus is only a 'little wonder' in that it provides protocol
> constraints and language bindings, which isn't really relevant when
> we're talking about same-address-space vs separate-address-space
> threading models.

You right, of course; it has nothing to do with the discussion at
hand. Is just that I *really* like dbus, and I preferred it over
almost any other IPC mechanism in Linux.

>> AFAIK, Google Chrome was
>> the first desktop program in Linux which uses several processes
>> runnning under the same GUI.
>
> Absolutely not. I used to play a game called 'realtimebattle'

OK, I will rephrase it: Google Chrome is the first *relevant* desktop
program in Linux which uses several processes runnning under the same
GUI.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México