Re: [Boost-users] the thread safe boost serialization library is threadsafe?

From: Fei Liu (feiliu_at_[hidden])
Date: 2007-07-10 11:39:02

I have verified that wrapping static mutex object around serialization 
methods work. The performance degradation is quite noticeable though.

Fei
Andrej van der Zee wrote:
> For the time being, is it possible to use
> serialization in multi-thread applications using
> mutexes around serialization methods, or should it
> totally be avoided?
> Thanks,
> Andrej
>
>
>
> --- Robert Ramey <ramey_at_[hidden]> wrote:
>
>   
>> It has been determined that the boost serialization
>> - contrary to
>> intention - is not currently thread safe.  This will
>> be addressed
>> in a future release.
>>
>> Robert Ramey
>>
>> Fei Liu wrote:
>>     
>>> I am testing a multi-thread app which uses boost
>>>       
>> serialization
>>     
>>> library..I got the dreaded error:
>>> *** glibc detected *** double free or corruption
>>>       
>> (fasttop):
>>     
>>> 0x0aed93d0 *** Aborted
>>>
>>> Using a core dump and gdb, here is a backtrace. It
>>>       
>> appears it crashed
>>     
>>> inside the multi-thread library. Any advice is
>>>       
>> appreciated..
>>     
>>> #0  0xb7f9a6be in
>>>
>>>       
> boost::serialization::extended_type_info::type_info_key_cmp
>   
>> ()
>>     
>>>   from
>>>       
> /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0
>   
>>> (gdb) bt
>>> #0  0xb7f9a6be in
>>>
>>>       
> boost::serialization::extended_type_info::type_info_key_cmp
>   
>> ()
>>     
>>>   from
>>>       
> /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0
>   
>>> #1  0xb7f9a6f2 in
>>>       
>> boost::serialization::extended_type_info::operator<
>>     
>>> () from
>>>       
> /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0
>   
>>> #2  0xb7f9b43e in
>>>
>>>       
> std::_Rb_tree<boost::serialization::extended_type_info
>   
>> const*,
>>     
>>> boost::serialization::extended_type_info const*,
>>>
>>>       
> std::_Identity<boost::serialization::extended_type_info
>   
>> const*>,
>>     
> boost::serialization::detail::tkmap::type_info_compare,
>   
> std::allocator<boost::serialization::extended_type_info
>   
>> const*>
>>     
>>>>>> insert_unique () from
>>>>>>             
> /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0
>   
>>> #3  0xb7f9adfb in
>>>  
>>>       
> boost::serialization::extended_type_info::self_register
>   
>> () from
>>     
> /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0
>   
>> #4
>>     
>>> 0x08053c23 in
>>>
>>>       
> boost::archive::detail::iserializer<boost::archive::xml_iarchive,
>   
>>> std::map<std::string, std::string,
>>>       
>> std::less<std::string>,
>>     
>>> std::allocator<std::pair<std::string const,
>>>       
>> std::string> > >
>>     
>>>>>> load_object_data (this=0x805ba7c,
>>>>>>             
>> ar=@0x933f71e0, x=0x933f73a8,
>>     
>>>    file_version=2470408016) at
>>>       
>> extended_type_info_typeid.hpp:77
>>     
>>> #5  0xb7f91900 in
>>>       
>> boost::archive::detail::basic_iarchive::load_object
>>     
>>> () from
>>>       
> /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0
>   
>>> #6  0x080537a7 in
>>>
>>>       
> boost::archive::detail::iserializer<boost::archive::xml_iarchive,
>   
>>> ns::ge::rule>::load_object_data (this=0x805ba60,
>>>    ar=@0x933f71e0, x=0x933f73a8, file_version=4)
>>>       
>> at
>>     
>>> iserializer.hpp:143 #7  0xb7f91900 in
>>>
>>>       
>> boost::archive::detail::basic_iarchive::load_object
>> () from
>>     
> /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0
>   
>> #8
>>     
>>> 0x08052c82 in
>>>       
>> utils::xml::deserialize<ns::ge::rule> (s=@0x4,
>>     
>>> is=@0xb7fb7f1e) at iserializer.hpp:143 #9 
>>>       
>> 0x08052f41 in
>>     
>>> ns::ge::rules<ns::ge::rule>::process_xml
>>>       
>> (this=0x805b9a0,
>>     
>>> xml=@0x933f7410) at ns_ge_rules.h:54 #10
>>>       
>> 0x08053353 in
>>     
>>> ns::ge::rule_server<ns::ge::rules<ns::ge::rule>,
>>> pthread::thread_pool> (arg=0xb7fb7f1e) at
>>>       
>> ns_ge_rule_listener.h:47
>>     
>>> #11 0xb7bb73b0 in start_thread () from
>>>       
>> /lib/tls/libpthread.so.0 #12
>>     
>>> 0xb79f426e in clone () from /lib/tls/libc.so.6 
>>>       
>>
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>>     
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