[Threads-devel] Request Help On boost::lock_error

Subject: [Threads-devel] Request Help On boost::lock_error
From: Ashutosh Warikoo (awarikoo_at_[hidden])
Date: 2010-09-14 05:21:42

Hello 
I am trying to model a usecase where a member function reads in a value & 
now has to modify the value by calling another function. The code which I 
have written using upgrade_locks fails at run time. I have gone through 
the documentation & have cleared the code as best as I could to arrive at 
a condensed usecase. I have also attached some sample erroneous outputs & 
a backtrace of the thread in question. Can someone please have a look? 
 
Linux architecture_233 2.6.18-128.el5 #1 SMP Wed Dec 17 11:41:38 EST 2008 
x86_64 x86_64 x86_64 GNU/Linux 
GNU C Library stable release version 2.5, by Roland McGrath et al. 
Compiled by GNU CC version 4.1.2 20080704 (Red Hat 4.1.2-44). 
Compiled on a Linux 2.6.9 system on 2009-01-05. 
Available extensions: 
        The C stubs add-on version 2.1.2. 
         crypt add-on version 2.1 by Michael Glad and others 
         GNU Libidn by Simon Josefsson 
         GNU libio by Per Bothner 
         NIS(YP)/NIS+ NSS modules 0.19 by Thorsten Kukuk 
         Native POSIX Threads Library by Ulrich Drepper et al 
         BIND-8.2.3-T5B 
         RT using linux kernel aio 
Thread-local storage support included. 
 
#include <iostream> 
#include <boost/thread.hpp> 
class boostThreadLocksTest 
{ 
        public: 
                boost::shared_mutex myMutex; 
                boost::upgrade_lock<boost::shared_mutex> myLock; 
                static int firstFunction(boostThreadLocksTest 
*pBoostThreadLocksTest); 
                static int secondFunction(boostThreadLocksTest 
*pBoostThreadLocksTest); 
 boostThreadLocksTest():myMutex(),myLock(myMutex,boost::defer_lock_t()){}; 

}; 
int boostThreadLocksTest::firstFunction(boostThreadLocksTest 
*pBoostThreadLocksTest) 
{ 
        std::cout<<"Before Locking "<<boost::this_thread::get_id()<<" 
"<<__PRETTY_FUNCTION__<<std::endl; 
        pBoostThreadLocksTest->myLock.lock(); 
        std::cout<<"After Locking "<<boost::this_thread::get_id()<<" 
"<<__PRETTY_FUNCTION__<<std::endl; 
        pBoostThreadLocksTest->secondFunction(pBoostThreadLocksTest); 
        std::cout<<"Returned From Call "<<boost::this_thread::get_id()<<" 
"<<__PRETTY_FUNCTION__<<std::endl; 
        pBoostThreadLocksTest->myLock.unlock(); 
        std::cout<<"After Unlocking "<<boost::this_thread::get_id()<<" 
"<<__PRETTY_FUNCTION__<<std::endl; 
        return(0); 
} 
int boostThreadLocksTest::secondFunction(boostThreadLocksTest 
*pBoostThreadLocksTest) 
{ 
        std::cout<<"Before Exclusive Locking 
"<<boost::this_thread::get_id()<<" "<<__PRETTY_FUNCTION__<<std::endl; 
        boost::upgrade_to_unique_lock<boost::shared_mutex> 
localUniqueLock(pBoostThreadLocksTest->myLock); 
        std::cout<<"After Exclusive Locking 
"<<boost::this_thread::get_id()<<" "<<__PRETTY_FUNCTION__<<std::endl; 
        return(0); 
} 
int main() 
{ 
        boostThreadLocksTest myObject; 
        boost::thread_group myThreadGroup; 
 
myThreadGroup.create_thread(boost::bind(boostThreadLocksTest::firstFunction,&myObject)); 

 
myThreadGroup.create_thread(boost::bind(boostThreadLocksTest::firstFunction,&myObject)); 

 
myThreadGroup.create_thread(boost::bind(boostThreadLocksTest::firstFunction,&myObject)); 

        myThreadGroup.join_all(); 
} 
 
Before Locking           0x7694120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
After Locking            0x7694120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Before Exclusive Locking 0x7694120 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
After Exclusive Locking  0x7694120 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
Returned From Call       0x7694120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
After Unlocking          0x7694120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Before Locking           0x76943e0 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
After Locking            0x76943e0 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Before Exclusive Locking 0x76943e0 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
After Exclusive Locking  0x76943e0 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
Before Locking           0x76946e0 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Returned From Call       0x76943e0 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
terminate called after throwing an instance of 
'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::lock_error> 
>' 
what():  boost::lock_error 
Aborted 
 
Before Locking           0x1888e120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
After Locking            0x1888e120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Before Exclusive Locking 0x1888e120 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
After Exclusive Locking  0x1888e120 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
Before Locking           0x1888e3e0 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Returned From Call       0x1888e120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
terminate called after throwing an instance of 
'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::lock_error> 
>' 
what():  boost::lock_error 
Returned From Call       0x1888e120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Aborted 
 
Before Locking           0x18f62120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
After Locking            0x18f62120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Before Exclusive Locking 0x18f62120 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
After Exclusive Locking  0x18f62120 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
Before Locking           0x18f623e0 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Returned From Call       0x18f62120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
terminate called after throwing an instance of 
'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::lock_error> 
>' 
what():  boost::lock_error 
Returned From Call       0x18f62120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Aborted 
 
Before Locking           0x1a2a1120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
After Locking            0x1a2a1120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Before Exclusive Locking 0x1a2a1120 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
After Exclusive Locking  0x1a2a1120 static int 
boostThreadLocksTest::secondFunction(boostThreadLocksTest*) 
Before Locking           0x1a2a13e0 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Returned From Call       0x1a2a1120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
terminate called after throwing an instance of 
'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::lock_error> 
>' 
what():  boost::lock_error 
Returned From Call       0x1a2a1120 static int 
boostThreadLocksTest::firstFunction(boostThreadLocksTest*) 
Aborted 
 
Program terminated with signal 6, Aborted. 
[New process 9574] 
[New process 9573] 
[New process 9571] 
#0  0x00000039f8430215 in raise () from /lib64/libc.so.6 
(gdb) bt 
#0  0x00000039f8430215 in raise () from /lib64/libc.so.6 
#1  0x00000039f8431cc0 in abort () from /lib64/libc.so.6 
#2  0x00000039fa0bec44 in __gnu_cxx::__verbose_terminate_handler () from 
/usr/lib64/libstdc++.so.6 
#3  0x00000039fa0bcdb6 in ?? () from /usr/lib64/libstdc++.so.6 
#4  0x00000039fa0bcde3 in std::terminate () from /usr/lib64/libstdc++.so.6 

#5  0x00000039fa0bceca in __cxa_throw () from /usr/lib64/libstdc++.so.6 
#6  0x00000000004108cf in boost::throw_exception<boost::lock_error> () 
#7  0x000000000041a1a0 in boost::upgrade_lock<boost::shared_mutex>::lock 
() 
#8  0x0000000000405e19 in boostThreadLocksTest::firstFunction () 
#9  0x0000000000409c36 in 
boost::_bi::list1<boost::_bi::value<boostThreadLocksTest*> 
>::operator()<int, int (*)(boostThreadLocksTest*), boost::_bi::list0> () 
#10 0x0000000000409c74 in boost::_bi::bind_t<int, int 
(*)(boostThreadLocksTest*), 
boost::_bi::list1<boost::_bi::value<boostThreadLocksTest*> > >::operator() 
()
#11 0x0000000000409c92 in 
boost::detail::thread_data<boost::_bi::bind_t<int, int 
(*)(boostThreadLocksTest*), 
boost::_bi::list1<boost::_bi::value<boostThreadLocksTest*> > > >::run () 
#12 0x00002b627c120bbb in thread_proxy () from 
/usr/local/lib/libboost_thread.so.1.43.0 
#13 0x00000039f9006367 in start_thread () from /lib64/libpthread.so.0 
#14 0x00000039f84d30ad in clone () from /lib64/libc.so.6 
 
#0  0x00000039f84c56db in write () from /lib64/libc.so.6 
#1  0x00000039f846ba63 in _IO_new_file_write () from /lib64/libc.so.6 
#2  0x00000039f846b976 in _IO_new_do_write () from /lib64/libc.so.6 
#3  0x00000039f846c0f4 in _IO_new_file_overflow () from /lib64/libc.so.6 
#4  0x00000039f8469286 in putc () from /lib64/libc.so.6 
#5  0x00000039fa08ff2f in std::ostream::put () from 
/usr/lib64/libstdc++.so.6 
#6  0x00000039fa090010 in std::endl<char, std::char_traits<char> > () from 
/usr/lib64/libstdc++.so.6 
#7  0x0000000000405d4a in boostThreadLocksTest::secondFunction () 
#8  0x0000000000405e9b in boostThreadLocksTest::firstFunction () 
#9  0x0000000000409c36 in 
boost::_bi::list1<boost::_bi::value<boostThreadLocksTest*> 
>::operator()<int, int (*)(boostThreadLocksTest*), boost::_bi::list0> () 
#10 0x0000000000409c74 in boost::_bi::bind_t<int, int 
(*)(boostThreadLocksTest*), 
boost::_bi::list1<boost::_bi::value<boostThreadLocksTest*> > >::operator() 
() #11 0x0000000000409c92 in 
boost::detail::thread_data<boost::_bi::bind_t<int, int 
(*)(boostThreadLocksTest*), 
boost::_bi::list1<boost::_bi::value<boostThreadLocksTest*> > > >::run () 
#12 0x00002b627c120bbb in thread_proxy () from 
/usr/local/lib/libboost_thread.so.1.43.0 
#13 0x00000039f9006367 in start_thread () from /lib64/libpthread.so.0 
#14 0x00000039f84d30ad in clone () from /lib64/libc.so.6 
 
#0  0x00000039f900a899 in pthread_cond_wait@@GLIBC_2.3.2 () from 
/lib64/libpthread.so.0 
#1  0x00002b627c1224e7 in boost::thread::join () from 
/usr/local/lib/libboost_thread.so.1.43.0 
#2  0x000000000041aa47 in boost::thread_group::join_all () 
#3  0x0000000000405be3 in main () 

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