FreeBSD libthr on Redhat
- From: Sergey Babkin <babkin@xxxxxxxxxxx>
- Date: Tue, 31 Mar 2009 06:55:01 -0500 (CDT)
No, you can not use the libthr from FreeBSD on Linux. You would not be
= able to even compile
it if you try, since it requires the kernel support= that is not
available on Linux.
For portability to different OSes, pthr= eads is your only choice. And
there really
should not be that much perfo= rmance difference anyway.
BTW, for better luck with posting to the m= ailing lists, please write
something sensible
into the Subject field.Emp= ty or weird subject probably triggers the
spam filter.
-SB
Ma= r 31, 2009 01:11:27 AM, [1]srinivasg@xxxxxxxxxxxxxxxxxxxxx= wrote:
Dear All,
I am not able to post any message to the
[2]freebsd-hackers@xxxxxxxxxxx ID.
When I post a message, I did= not get any error. However, I am able
to
receive the messages from all = of you. So, I am sending this
message to
you individually. Please, my re= quest is to forward this to the
list.
I have written an application = where I have used the libpthread
library
for creating the pthreads. Howe= ver, to get the maximum
optimization, I
want to use the libthr.a library= instead of libpthread library.
However,
when I tried to use on my Redha= t box, I end up with following
errors.
../lib/linux/libthr.a(thr_sem= .o): In function `_sem_init':
thr_sem.c:(.text+0x100): undefined referen= ce to `ksem_init'
thr_sem.c:(.text+0x115): undefined reference to `ksem_= destroy'
../lib/linux/libthr.a(thr_sem.o): In function
`_sem_destroy':thr_sem.c:(.text+0x216): undefined reference to
`ksem_destroy'
../lib/= linux/libthr.a(thr_sem.o): In function `_sem_timedwait':
thr_sem.c:(.tex= t+0x2ad): undefined reference to `ksem_timedwait'
../lib/linux/libthr.a(= thr_sem.o): In function `_sem_wait':
....
....
....
collect= 2: ld returned 1 exit status
make: *** [target] Error 1
I underst= and that the "ksem_init" is not available on the Redhat
box.
Then, I hav= e tried to use the libc.so.7 from FreeBSD. I have
included
the libc.so.7= in my application to getridof the above undefined
references. Even thou= gh, I end up with the following errors.
/usr/bin/ld: errno@@FBSD_1.0= : TLS definition in /lib/libc.so.6
section
.tbss mismatches non-TLS defi= nition in ../lib/linux/libc.so
section .bss
/lib/libc.so.6: could not re= ad symbols: Bad value
Here, the lib/libc.so.6 is a Redhat libc libra= ry where as
../lib/linux/libc.so is a FreeBSD library (libc.so.7).
<= br>Is it possible to use the FreeBSD libthr.a library file on a
Redhat
L= inux box?
Please let me know the whether it is possible to use the = libthr.a
library on Redhat box or not.
Thanks in advance.
= With Regards,
Srinivas G
References
1. 3D"mailto:srinivasg@xxxxxxxxxxxxxxxxxxxxx";
2. file://localhost/tmp/3D"mailt_______________________________________________
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