Ya.
What I found is that harmony and IBM VM fails when running Runtime.exec both
on RedHat and Unbuntu. But drlvm seems passes. I have not tried suse.
On 10/16/06, Paulex Yang <[EMAIL PROTECTED]> wrote:
Geir Magnusson Jr. wrote:
> I'm confused. Didn't you just report this on Ubuntu?
Let Leo speak for himself, but I thought Leo meant IBM VME + Harmony
classlib failed on Ubuntu and Redhat, but Alexey just reported that both
(VME and DRLVM) works on SUSE, that's why it seems interesting.
>
> I have had similar forking problems on Ubuntu 6 (I once found a bug in
> classlib related to forking...).
>
> I never figured out why Unbuntu does this, but it seemed that under
> memory stress, Ubuntu's fork() fails. Try this - close Eclipse and
> run the test again...
> geir
>
>
> Leo Li wrote:
>> Thank you.
>> I have just run it on drlvm of unbuntu, it works.
>> What a qurious problem!
>>
>>
>> On 10/16/06, Alexey Varlamov <[EMAIL PROTECTED]> wrote:
>>>
>>> Both DRLVM and J9 works for me (SUSE9).
>>>
>>> --
>>> Alexey
>>>
>>> 2006/10/16, Leo Li <[EMAIL PROTECTED]>:
>>> > Hi, all:
>>> > The harmony Runtime.exec fails on Linux with ENOMEM.
>>> > Here is the testcase:
>>> >
>>> > public class Exec {
>>> > public static void main(String[] args) throws Exception {
>>> >
>>> > Runtime.getRuntime().exec("ls"); }
>>> > }
>>> >
>>> > I have tried it on RedHat Enterprise 4 and Unbuntu, both get
>>> ENOMEM
>>> in
>>> > native code.
>>> >
>>> > After digging into it, I found it fails in procimpl.c, line 135:
>>> >
>>> > grdpid = fork ();
>>> >
>>> > If the call to fork is changed to vfork, the testcase will pass
>>> but
>>> > still get exitcode = 1 which indicates that some error has
>>> happened. The
>>> > difference between fork and vfork is just whether page tables is
>>> copied
>>> to
>>> > child process or not. But I do not think it is the main cause.
>>> Besides,
>>> > vfork has become outdated since it main usage is supplied by fork
>>> with
>>> > copy-on-write function implemented in modern linux kernel.
>>> Furthermore,
>>> > vfork is also not so safe as fork. So I do not think it is the
>>> accepted
>>> way
>>> > to solve the problem.
>>> >
>>> > I will try whether it can be reproduced on drlvm of linux since
>>> I am
>>> not
>>> > sure whether it is relevent to VM or classlib. If any drlvm man
>>> can tell
>>> me
>>> > the result, it can avoid my trouble to build it on linux. :)
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > --
>>> > Leo Li
>>> > China Software Development Lab, IBM
>>> >
>>> >
>>>
>>> ---------------------------------------------------------------------
>>> Terms of use : http://incubator.apache.org/harmony/mailing.html
>>> To unsubscribe, e-mail: [EMAIL PROTECTED]
>>> For additional commands, e-mail: [EMAIL PROTECTED]
>>>
>>>
>>
>>
>
> ---------------------------------------------------------------------
> Terms of use : http://incubator.apache.org/harmony/mailing.html
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
--
Paulex Yang
China Software Development Lab
IBM
---------------------------------------------------------------------
Terms of use : http://incubator.apache.org/harmony/mailing.html
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
Leo Li
China Software Development Lab, IBM
