Re: [Boost-users] cpp code and Boost.Interprocess compile error

Subject: Re: [Boost-users] cpp code and Boost.Interprocess compile error
From: hamsinv (hamsinv_at_[hidden])
Date: 2008-10-17 05:34:56

Hello All,

How do i check its the same memory location accessed in two processes.

hamsinv wrote:
> 
> Hello Ion Gaztanaga,
> 
> Thank you for the suggestion. I would do that. 
> 
> 
> 
> Ion Gaztañaga wrote:
>> 
>> hamsinv wrote:
>>> Hello All,
>>> 
>>> I was looking for using stl maps in shared memory, when i came across
>>> Boost
>>> library.
>>> I have downloaded boost_1_36_0 version. In the examples directory, there
>>> is
>>> a cpp file for sharing stl maps named doc_map.cpp.
>>> 
>>> When i compile the same with the following command:
>>> c++ -I $BOOST_ROOT doc_map.cpp -o shmmap
>>> 
>>> I got the following errors:
>>> /tmp/ccEYJnov.o: In function
>>> `boost::interprocess::shared_memory_object::priv_open_or_create(boost::interprocess::detail::create_enum_t,
>>> char const*, boost::interprocess::mode_t)':
>>> doc_map.cpp:(.text._ZN5boost12interprocess20shared_memory_object19priv_open_or_createENS0_6detail13create_enum_tEPKcNS0_6mode_tE[boost::interprocess::shared_memory_object::priv_open_or_create(boost::interprocess::detail::create_enum_t,
>>> char const*, boost::interprocess::mode_t)]+0x163): undefined reference
>>> to
>>> `shm_open'
>>> /tmp/ccEYJnov.o: In function
>>> `boost::interprocess::detail::mutexattr_wrapper::mutexattr_wrapper(bool)':
>>> doc_map.cpp:(.text._ZN5boost12interprocess6detail17mutexattr_wrapperC1Eb[boost::interprocess::detail::mutexattr_wrapper::mutexattr_wrapper(bool)]+0x14):
>>> undefined reference to `pthread_mutexattr_init'
>>> doc_map.cpp:(.text._ZN5boost12interprocess6detail17mutexattr_wrapperC1Eb[boost::interprocess::detail::mutexattr_wrapper::mutexattr_wrapper(bool)]+0x2b):
>>> undefined reference to `pthread_mutexattr_setpshared'
>>> doc_map.cpp:(.text._ZN5boost12interprocess6detail17mutexattr_wrapperC1Eb[boost::interprocess::detail::mutexattr_wrapper::mutexattr_wrapper(bool)]+0x4d):
>>> undefined reference to `pthread_mutexattr_settype'
>>> /tmp/ccEYJnov.o: In function
>>> `boost::interprocess::detail::mutexattr_wrapper::~mutexattr_wrapper()':
>>> doc_map.cpp:(.text._ZN5boost12interprocess6detail17mutexattr_wrapperD1Ev[boost::interprocess::detail::mutexattr_wrapper::~mutexattr_wrapper()]+0xd):
>>> undefined reference to `pthread_mutexattr_destroy'
>>> /tmp/ccEYJnov.o: In function
>>> `boost::interprocess::shared_memory_object::remove(char const*)':
>>> doc_map.cpp:(.text._ZN5boost12interprocess20shared_memory_object6removeEPKc[boost::interprocess::shared_memory_object::remove(char
>>> const*)]+0x33): undefined reference to `shm_unlink'
>>> collect2: ld returned 1 exit status
>>> 
>>> Can anyone please tell me what i'm missing in the compilation.
>>> 
>>> Thank you.
>> 
>> You need to link your system's shared memory and pthread library(eg: 
>> -lrt in linux).
>> 
>> Regards,
>> 
>> Ion
>> 
>> 
>> _______________________________________________
>> Boost-users mailing list
>> Boost-users_at_[hidden]
>> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>> 
>> 
> 
> 

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