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nanoseconds problem in cocoa cog

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EstebanLM

nanoseconds problem in cocoa cog

Hi,

I'm experimenting some "random hangs" with my latest builds of cocoa cog (any jit version, I don't know jet if stack too)

The application was hanging (but not crashing) each X random time and with no information, even running with gdb. After a while testing, I found that the problem was gere:

/* sleep for microSeconds or until i/o becomes possible, avoiding

sleeping in select() if timeout too small */

int aioSleepForUsecs(int microSeconds)

{

#if defined(HAVE_NANOSLEEP)

if (microSeconds < (1000000/60)) /* < 1 timeslice? */

{

if (!aioPoll(0))

{

struct timespec rqtp= { 0, microSeconds * 1000 };

struct timespec rmtp;

nanosleep(&rqtp, &rmtp);

microSeconds= 0; /* poll but don't block */

}

#endif

return aioPoll(microSeconds);

}

and more precisely when calling nanosleep

for now, I disabled HAVE_NANOSLEEP definition, and I'm testing (right now, no hangs), but I don't know how this should work.

Someone knows?

Cheers,

Esteban

EstebanLM

Re: nanoseconds problem in cocoa cog

mmm... no, it looks like now it is hanging in aioPoll :(

I'm testing with a squeak 4.2 and the problem is evident and automatic... you can see the problem, if you want :)

cheers,

Esteban

El 11/04/2011, a las 6:00p.m., Esteban Lorenzano escribió:

Hi,
I'm experimenting some "random hangs" with my latest builds of cocoa cog (any jit version, I don't know jet if stack too)
The application was hanging (but not crashing) each X random time and with no information, even running with gdb. After a while testing, I found that the problem was gere:

/* sleep for microSeconds or until i/o becomes possible, avoiding
sleeping in select() if timeout too small */

int aioSleepForUsecs(int microSeconds)
{
#if defined(HAVE_NANOSLEEP)
if (microSeconds < (1000000/60)) /* < 1 timeslice? */
{
if (!aioPoll(0))
{
struct timespec rqtp= { 0, microSeconds * 1000 };
struct timespec rmtp;
nanosleep(&rqtp, &rmtp);
microSeconds= 0; /* poll but don't block */
}
}
#endif
return aioPoll(microSeconds);
}

and more precisely when calling nanosleep
for now, I disabled HAVE_NANOSLEEP definition, and I'm testing (right now, no hangs), but I don't know how this should work.

Someone knows?

Cheers,
Esteban