Control: reassign -1 libboost-thread1.49.0 On Jo, 17 oct 13, 17:32:00, Frank Talamy wrote: > Package: boost-thread > Version: 1.49.0 > > I am currently working on a C++ app that runs on my PC just fine and I want > to make it work on a BeagleBone Black on which I have already installed a > Debian Wheezy. > > I'm cross compiling using ELDK v5.3 and qmake from my PC (Intel Celeron, > Debian Wheezy, boost v1.49.0-3.2) to the BeagleBone Black (ARM Cortex A8, > Debian Wheezy, boost v1.49.0-3.2). > > Everything works like it should, but every now and then, my app freezes (is > stuck on a __pthread_mutex_lock) when a boost::thread is created or the app > is waiting for a boost::thread::join(). > > I attached a small source code that generates a program that freezes in a > similar fashion when executed on the BeagleBone Black. There is also the > backtrace printed when the app freezes (GDB) and the .pro file used when > executing the qmake command. > > It looks like an upgrade of boost to version 1.54 fixes the issue. But it > seems that Debian chose Boost 1.49.0 as a stable library for Wheezy so I > make this bug report even if it was already corrected in a newer release. > > I've already posted this issue on Stackoverflow and Boost bug report : > > http://stackoverflow.com/questions/18107163/application-boostthread-stuck-on-mutex-lock-when-compiled-for-arm-running-on-b > > https://svn.boost.org/trac/boost/ticket/9086
> (gdb) bt
> #0 __libc_do_syscall () at
> ../ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S:44
> #1 0xb6756f92 in __lll_lock_wait (futex=0x1881c, private=0) at
> ../ports/sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.c:47
> #2 0xb675357a in __pthread_mutex_lock (mutex=0x1881c) at
> pthread_mutex_lock.c:61
> #3 0xb68029dc in pthread_mutex_lock (mutex=<optimized out>) at forward.c:182
> #4 0xb6991710 in lock (this=0xb69a2c68) at
> ./boost/smart_ptr/detail/spinlock_pt.hpp:41
> #5 scoped_lock (pv=0x1f714, this=<synthetic pointer>) at
> ./boost/smart_ptr/detail/spinlock_pool.hpp:65
> #6 atomic_increment (pw=0x1f714) at
> ./boost/smart_ptr/detail/sp_counted_base_spin.hpp:41
> #7 add_ref_copy (this=0x1f710) at
> ./boost/smart_ptr/detail/sp_counted_base_spin.hpp:90
> #8 shared_count (r=..., this=<optimized out>) at
> ./boost/smart_ptr/detail/shared_count.hpp:316
> #9 shared_ptr (this=<optimized out>) at ./boost/smart_ptr/shared_ptr.hpp:164
> #10 operator= (r=..., this=0x1f604) at ./boost/smart_ptr/shared_ptr.hpp:311
> #11 boost::thread::start_thread (this=0x1f5e8) at
> libs/thread/src/pthread/thread.cpp:185
> #12 0x0000cf7c in boost::thread::thread<boost::_bi::bind_t<void,
> boost::_mfi::mf0<void, sub_dummy_class>,
> boost::_bi::list1<boost::_bi::value<sub_dummy_class*> > > > (this=0x1f5e8,
> f=...)
> at
> /opt/eldk-5.3/armv7a-hf/sysroots/armv7ahf-vfp-neon-linux-gnueabi/usr/include/boost/thread/detail/thread.hpp:205
> #13 0x0000aa44 in sub_dummy_class::start (this=0x1cfdc) at main.cpp:51
> #14 0x0000abc4 in dummy_class::start (this=0x1cf90) at main.cpp:96
> #15 0x0000ac44 in main (argc=1, argv=0xbefff834) at main.cpp:109
> #include <stdio.h>
> #include <boost/thread.hpp>
>
> #define NB_THREADS 20
> #define THREAD_LIFE_DURATION 5
>
> int g_nb_thread = 0;
>
> boost::thread * subRegisterThread(boost::thread * pthread)
> {
> printf("Register thread #%d %p created\n",
> g_nb_thread++, pthread);
>
> return pthread;
> }
>
> /////////////////// Sub dummy class
>
> class sub_dummy_class
> {
> public:
> boost::thread *mThread;
>
> sub_dummy_class();
> ~sub_dummy_class();
> void loop();
> void start();
> };
>
>
>
> sub_dummy_class::sub_dummy_class()
> {
> mThread = NULL;
> }
>
> sub_dummy_class::~sub_dummy_class()
> {
> if(mThread)
> {
> mThread->join();
> }
> }
>
> void sub_dummy_class::start()
> {
> mThread = subRegisterThread(new
> boost::thread(boost::bind(&sub_dummy_class::loop, this)));
> }
>
> void sub_dummy_class::loop()
> {
> int life_duration = THREAD_LIFE_DURATION;
> while(life_duration > 0)
> {
> life_duration--;
> printf("Got %d seconds to live !\n", life_duration);
> usleep(1000000);
> }
> return;
> }
>
>
> ////////////////////////// Dummy class
>
> class dummy_class
> {
> public:
>
> sub_dummy_class dummies[NB_THREADS];
>
> dummy_class();
> ~dummy_class();
> void start();
>
>
> };
>
> dummy_class::dummy_class()
> {
>
> }
>
> dummy_class::~dummy_class()
> {
>
> }
>
> void dummy_class::start()
> {
> for(int i = 0 ; i < NB_THREADS ; i++)
> {
> dummies[i].start();
> }
> }
>
>
> int main(int argc, char* argv[])
> {
> printf("Starting program\n");
>
> printf("Creating dummy class\n");
> dummy_class *DC = new dummy_class();
>
> printf("Starting dummy class\n");
> DC->start();
>
> printf("Deleting dummy class\n");
> delete DC;
>
> return 0;
> }
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