Using the function __pthread_initialize() and variable
__pthread_initial_thread_bos were highly risky, but it was necessary to do
it
due to a bug in libpthread with uclibc. After the main-process forked a new
process and died, I had to re-initialize libpthread from the child to make
mutexes work.
I'm not sure how to fix this without reordering lots of code in owlib (and
use pthread-function first time after deamon is called). This should fix the
problem, but I never tried to do those changes before. The quick fix was to
re-initialize pthread and it worked for all platforms I used at that time.
/* Have to re-initialize pthread since the main-process is gone.
*
* This workaround will probably be fixed in uClibc-0.9.28
* Other uClibc developers have noticed similar problems which are
* trigged when pthread functions are used in shared libraries. */
__pthread_initial_thread_bos = NULL;
__pthread_initialize();
It's strange that you don't have PTHREAD_MUTEX_ADAPTIVE_NP defined in
pthread.h. It's defined in all uclibc versions I have seen.
Which uclibc-version do you have?
/Christian
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Eric
Allen
Sent: den 16 maj 2007 06:04
To: [email protected]
Subject: Re: [Owfs-developers] OWFS on DD-WRT
It looks like there are three files it's used in: ow_cache.c, ow_locks.c,
and ow_tree.c. The first two can be disabled with config options.
When I attempted to build with gcc-mipsel-linux-uclibc 4.1 I got the
following error
owlib.c: In function 'LibStart':
owlib.c:215: error: '__pthread_initial_thread_bos' undeclared (first use in
this function)
owlib.c:215: error: (Each undeclared identifier is reported only once
owlib.c:215: error: for each function it appears in.)
owlib.c:216: warning: implicit declaration of function
'__pthread_initialize'
owlib.c:219: warning: implicit declaration of function
'pthread_mutexattr_init'
owlib.c:219: error: 'mattr' undeclared (first use in this function)
owlib.c:220: warning: implicit declaration of function
'pthread_mutexattr_settype'
owlib.c:220: error: 'PTHREAD_MUTEX_ADAPTIVE_NP' undeclared (first use in
this function)
owlib.c:221: error: 'pmattr' undeclared (first use in this function)
make[4]: *** [owlib.lo] Error 1
make[3]: *** [all-recursive] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all-recursive] Error 1
On 5/15/07, Eric Allen <[EMAIL PROTECTED]> wrote:
Ah. Okay. How tough is it to build owfs for dd-wrt? Is it simply a matter of
taking the source distro and compiling with mipsel-uclibc?
On 5/15/07, Paul Alfille <[EMAIL PROTECTED] mail> wrote:
tsearch is the binary tree search that is part of glibc and some
implementations of uClibc. It may not have been included in the dd-wrt
version of uClibc. It could be an optional part of owlib, like some of the
semaphore and other code.
Does that give you a place to look?
Paul Alfille
On 5/15/07, Eric Allen < [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
mailError! Filename not specified.> wrote:
I've gotten as far as the previous poster with install OWFS on DD-
WRT: when I try to start the daemon I get a "can't resolve symbol
'tsearch' "-error. I tried installing uclibc from http://
downloads.openwrt.org/whiterussian/packages/ and reordering
LD_LIBRARY_PATH to load that libc, but then I just got a segfault.
Any ideas how to proceed?
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