[nanomsg] Re: Testing on QNX 6.5.0
- From: Hajime Saito <emijah.s@xxxxxxxxx>
- To: nanomsg@xxxxxxxxxxxxx
- Date: Mon, 12 May 2014 10:15:39 +0900
Hello,
I've added a
printf("nn_mutex_init: self->mutex = 0x%X\n", &self->mutex);
to nn_mutex_init and something equivalent to nn_mutex_term.
The output from inproc is as follows.
bash-4.1# ./tests/inproc
sc test_socket - start
nn_mutex_init: self->mutex = 0xB8235838
nn_mutex_init: self->mutex = 0xB8235660
nn_mutex_init: self->mutex = 0xB82356C0
nn_mutex_init: self->mutex = 0x8062DE8
sc test_socket - end
sb test_socket - start
nn_mutex_init: self->mutex = 0x8060A30
sb test_socket - end
sc test_close - start
nn_mutex_term: self->mutex = 0x8062DE8
sc test_close - end
sb test_close - start
nn_mutex_term: self->mutex = 0x8060A30
nn_mutex_term: self->mutex = 0xB8235660
nn_mutex_term: self->mutex = 0xB8235838
sb test_close - end
sb test_socket - start
nn_mutex_init: self->mutex = 0xB8235838
nn_mutex_init: self->mutex = 0xB8235660
nn_mutex_init: self->mutex = 0xB82356C0
Resource busy [16] (src/utils/mutex.c:55)
abort (core dumped)
I added printf before and after test_socket and test_close.
It does seem that there is one mutex that is being used without being
closed first.
Hajime
2014-05-09 19:17 GMT+09:00 Martin Sustrik <sustrik@xxxxxxxxxx>:
> -----BEGIN PGP SIGNED MESSAGE-----
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>
> On 09/05/14 11:41, Martin Sustrik wrote:
>
>> Is there anything special about QNX mutexes? Are they created in a
>> locked state or something like that?
>
> Actually, it's pthread_mutex_init() failing with EBUSY -- i.e. it
> claims that we are ri-initialising an open mutex.
>
> The best way to debug that would be to print out mutex's address in
> both nn_mutex_init() and nn_mutex_term() and then run one of the
> failing tests.
>
> We can then check whether nanomsg is actually trying to re-initialise
> an open mutex or whether it is just some QNX quirk.
>
> Martin
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