Unhandled exception from boost::thread::start_thread

[Andrew Hutchings]

Stack trace from core file. Hit when trying to generate > 1000 connections. Run the attached php file to reproduce this.

#0 0x0000003b9e20c94c in pthread_kill () from /lib64/libpthread.so.0
#1 0x0000000000660eda in write_core (sig=6) at drizzled/signal_handler.cc:98
#2 drizzled_handle_segfault (sig=6) at drizzled/signal_handler.cc:156
#3 <signal handler called>
#4 0x0000003b9de34085 in raise () from /lib64/libc.so.6
#5 0x0000003b9de35a36 in abort () from /lib64/libc.so.6
#6 0x0000003ba96bc08d in __gnu_cxx::__verbose_terminate_handler() ()
   from /usr/lib64/libstdc++.so.6
#7 0x0000003ba96ba2a6 in ?? () from /usr/lib64/libstdc++.so.6
#8 0x0000003ba96ba2d3 in std::terminate() () from /usr/lib64/libstdc++.so.6
#9 0x0000003ba96ba3de in __cxa_throw () from /usr/lib64/libstdc++.so.6
#10 0x00007f3f3d995f0e in ?? () from /usr/lib64/libboost_thread-mt.so.1.44.0
#11 0x00007f3f3d99888c in boost::thread::start_thread() ()
   from /usr/lib64/libboost_thread-mt.so.1.44.0
#12 0x00007f3f358f7e67 in thread<boost::_bi::bind_t<void, boost::_mfi::mf1<void, multi_thread::MultiThreadScheduler, long>, boost::_bi::list2<boost::_bi::value<multi_thread::MultiThreadScheduler*>, boost::_bi::value<long> > > > (
    this=0x1f61970, session=...)
    at /usr/include/boost/thread/detail/thread.hpp:204
#13 multi_thread::MultiThreadScheduler::addSession (this=0x1f61970,
    session=...) at plugin/multi_thread/multi_thread.cc:117
#14 0x000000000065b3dc in drizzled::Session::schedule (arg=...)
    at drizzled/session.cc:576
#15 0x000000000052c77f in main (argc=<value optimized out>,
    argv=<value optimized out>) at drizzled/main.cc:363

[Andrew Hutchings (linuxjedi)]

OK, so what is happening is "ulimit -u" is getting hit, this is causing boost::thread_resource_error exception to be thrown. We need to catch this and change it to an error.