Re: [Boost-users] mutex.cpp with pthread problem

16 Dec 2004


      Michael Garriss said the following on 12/16/04 12:49:
...
Michael Garriss said the following on 12/16/04 10:46:
...
from libs/thread/mutex.cpp in boost 1.31, around line 211:
void mutex::do_lock()
 {
     int res = 0;
     res = pthread_mutex_lock(&m_mutex);
     if (res == EDEADLK) throw lock_error();
     assert(res == 0);
 }
that last assert is failing for me.  pthread_mutex_lock is returning 
22 which if it's from sys/errno.h is EINVAL or "Invalid argument".  
any ideas?
i built boost 1.31 on hpux 11.11 with a gcc from hp.  some info:
...
gcc -v
Reading specs from 
/usr/local/lib/gcc-lib/hppa2.0w-hp-hpux11.11/3.3.3/specs
Configured with: 
/scratch/zack/pkgbuild/3.3.1/hpux-11/gcc-3.3.3/configure 
--enable-languages=c,c++ --enable-threads=posix --disable-nls 
--with-gnu-as --without-gnu-ld --with-as=/usr/local/bin/as 
--prefix=/usr/local
Thread model: posix
gcc version 3.3.3
...
uname -a
HP-UX unknown B.11.11 U 9000/800 180901557 unlimited-user license
thanks,
mike
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ok, this breaks with an assertrion failure:
#include 
 #include 
 #include <iostream>
 struct count {
     boost::mutex mutex;
     count (int) { }
     void operator()() {
         boost::mutex::scoped_lock lock(mutex);
         std::cout << "Here" << std::endl;
     }
 };
 int main(void) {
   count c(1);
   boost::thread thrd1(boost::ref(c));
   thrd1.join();
   return 0;
 }
but this does not:
 #include 
 #include 
 boost::mutex mutex;
 struct count {
     count (int) { }
     void operator()() { boost::mutex::scoped_lock lock(mutex); }
 };
 int main(void) {
   boost::thread thrd1(count(0));
   thrd1.join();
   return 0;
 }
--------------------------------------------------------------------------
--- mgarriss@hpux-test01 ~/test ---
g++ -I /home/mgarriss/dev/tp-compiled/include/boost-1_31_0 -pthread 
test.cxx 
/home/mgarriss/dev/tp-compiled/lib/boost-1_31_0/libboost_thread-gcc-mt.a
/usr/local/hppa2.0w-hp-hpux11.11/bin/nm: a.out: no symbols
--- mgarriss@hpux-test01 ~/test ---
./a.out
Assertion failed: _EX, file 
/home/mgarriss/dev/tp-sources/boost_1_31_0/libs/thread/src/mutex.cpp, 
line 211
ABORT instruction (core dumped)
it also breaks on making mutex a static class member.  so in summary it 
only works (i think) if the mutex is a member var.
Mike
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err. those exmaples got mixed up (thx Bklyn).  global mutex breaks it 
and member var mutex works.

sorry for the noise,
mike