From: Robert Klemme <shortcutter@...>
Date: 2008-06-11T03:14:53+09:00
Subject: Re: allocate particular amount of memory to a ruby thread ?

On 10.06.2008 16:48, Jano Svitok wrote:
> On Tue, Jun 10, 2008 at 13:46, Pokkai Dokkai <bad_good_lion@yahoo.com> wrote:
>> how to allocate particular amount of memory to a ruby thread or to a
>> ruby script?
>>
>> for example suppose if i want to start a thread it should take 1 MB
>> memory only
>>
>> Thread.start(memory=1024*1024*1024) do |t|
>>
>> # some stuff here
>> end
>>
>> is there anyway to do like this ?
> 
> AFAIK, the memory is shared among threads, no matter whether system or ruby's.

Exactly.  That's the whole point of threads.

> The memory for the whole ruby process/script is allocated on demand,
> with some initial amount.
> This amount and growing ratio is compiled-in (at least for 1.8).

And there is no way to limit it.  It might be possible to limit on a per 
process base (depending on OS, see "ulimit -a") but not on a per thread 
base.  And there might be a limit on the stack size.  But it does not 
make sense to limit memory allocated by a thread because the memory is 
shared and can be used from any thread.

Kind regards

	robert