[Log] Error with operator<< in basic_formatting_ostream
5 Nov
2013
5 Nov
'13
8:13 a.m.
Hi ewveryone,
I'm working lately with Boost.Log (I'm a newbie) library and I want to
write a logger with some parameters and formatting options. I followed the
documentation, I created a backend and a frontend and I tried to format the
output in the frontend with the set_formatter() function. I tried with the
Lambda style and with the Boost.Format style but I'm getting an error that
I can not locate. Iwas working on it for the last two whole days but I
couldn't find a solution. It is related with the basic_formatting_ostream,
but I don't understand what that means. I defined the backend and attached
to it two streams (to a file and to cout)
typedef boost::log::sinks::text_ostream_backend our_backend;
typedef boost::log::sinks::synchronous_sink<our_backend>
our_frontend;
//............................................................................................................................................
boost::shared_ptr<our_backend> backend =
boost::make_shared<our_backend>();
//Stream definitions
boost::shared_ptr<std::ostream> stream_out(&std::cout,
boost::log::empty_deleter());
boost::shared_ptr<std::ostream> stream_file(new
std::ofstream("file_logger.log"));
backend -> add_stream(stream_out);
backend -> add_stream(stream_file);
Created the frontend (and wrapping the backend to it)
//Wrap the backend into the frontend and register in the core.
//The frontend provides synchronization for the backend.
boost::shared_ptr<our_frontend> frontend(new our_frontend(backend));
And now come the offending code which is supposed to format the output
(note that the first commented block was my first try). None of them works
and the error is the same in both cases:
*/*frontend -> set_formatter*
* (*
* boost::log::expressions::format("[%1%] %2%, File: %3%, Line:
%4% <%5%>: %6% ")*
* % boost::log::attributes::counter< unsigned int >(1)*
* % boost::log::attributes::local_clock()*
* % boost::log::expressions::attr< severity_level
>("Severity")*
* % boost::log::expressions::message*
* );*/*
//We are going to define the formatter in a different style to try
to get formatted output
frontend -> set_formatter
(
boost::log::expressions::stream
<< boost::log::attributes::counter< unsigned int >(1)
<<" ["<< boost::log::attributes::local_clock()
<<"] <"<< boost::log::expressions::attr< severity_level >("Severity")
<<"> "<< boost::log::expressions::message
);
The error I get is the next one:
*/home/victor/Programacion/workspace/opice/build-parallel/../libs/include/boost/log/utility/formatting_ostream.hpp:664:5:
error: no match for ‘operator<<’ in ‘(&
strm)->boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
AllocatorT>::stream [with CharT = char, TraitsT = std::char_traits<char>,
AllocatorT = std::allocator<char>,
boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
AllocatorT>::ostream_type = std::basic_ostream<char>]() << value’*
And I really don't know what is happening. I also included a lot of files
(I'm sure I included too much files, indeed) to be sure it was not caused
by some undefined operator or something similar. However I still have the
same problem. The includes are:
#include <iostream>
#include <fstream>
#include <string>
#include <boost/thread/shared_mutex.hpp>
#include <boost/log/core.hpp>
#include <boost/log/common.hpp>
#include <boost/make_shared.hpp>
#include <boost/log/expressions.hpp>
#include <boost/log/utility/setup/file.hpp>
#include <boost/log/utility/setup/console.hpp> //puede ser innecesario
#include <boost/log/utility/setup/common_attributes.hpp> //puede ser
innecesario
#include <boost/log/utility/empty_deleter.hpp>
#include<boost/thread/mutex.hpp>
#include <boost/log/attributes/timer.hpp>
#include <boost/log/attributes/mutable_constant.hpp>
#include <boost/log/sources/severity_logger.hpp>
#include <boost/log/utility/formatting_ostream.hpp>
#include <boost/log/sinks/text_ostream_backend.hpp>
#include <boost/log/sinks/sync_frontend.hpp>
#include <boost/log/support/date_time.hpp>
As you can see, they are probably redundant or innecessary but I could rip
off that files when I could get the program compiled. Now, I'm out of ideas
so any help you could bring me should be very appreciated. Thank you in
advance.
Victor Hevia
5 Nov
5 Nov
9:19 p.m.
Hi,
In the tutorial here:
http://www.boost.org/doc/libs/1_54_0/libs/log/doc/html/log/tutorial/formatters.html
There is a link to this example:
http://www.boost.org/doc/libs/1_54_0/libs/log/example/doc/tutorial_fmt_format.cpp
Which I can compile fine like this:
g++ -DBOOST_ALL_DYN_LINK -Lboost-trunk155beta_inst/lib/ -lboost_system
-lboost_log -lboost_filesystem -lboost_thread -I
boost-trunk155beta_inst/include/ boost_log_format.cpp
Could start from that?
cheers, Johan
2013/11/5 Víctor Yo <rcpoetics@gmail.com>
> Hi ewveryone,
>
> I'm working lately with Boost.Log (I'm a newbie) library and I want to
> write a logger with some parameters and formatting options. I followed the
> documentation, I created a backend and a frontend and I tried to format the
> output in the frontend with the set_formatter() function. I tried with the
> Lambda style and with the Boost.Format style but I'm getting an error that
> I can not locate. Iwas working on it for the last two whole days but I
> couldn't find a solution. It is related with the basic_formatting_ostream,
> but I don't understand what that means. I defined the backend and attached
> to it two streams (to a file and to cout)
>
>
> typedef boost::log::sinks::text_ostream_backend our_backend;
> typedef boost::log::sinks::synchronous_sink<our_backend>
> our_frontend;
>
>
> //............................................................................................................................................
>
> boost::shared_ptr<our_backend> backend =
> boost::make_shared<our_backend>();
> //Stream definitions
> boost::shared_ptr<std::ostream> stream_out(&std::cout,
> boost::log::empty_deleter());
> boost::shared_ptr<std::ostream> stream_file(new
> std::ofstream("file_logger.log"));
> backend -> add_stream(stream_out);
> backend -> add_stream(stream_file);
>
> Created the frontend (and wrapping the backend to it)
>
> //Wrap the backend into the frontend and register in the core.
> //The frontend provides synchronization for the backend.
> boost::shared_ptr<our_frontend> frontend(new our_frontend(backend));
>
> And now come the offending code which is supposed to format the output
> (note that the first commented block was my first try). None of them works
> and the error is the same in both cases:
>
> */*frontend -> set_formatter*
> * (*
> * boost::log::expressions::format("[%1%] %2%, File: %3%,
> Line: %4% <%5%>: %6% ")*
> * % boost::log::attributes::counter< unsigned int
> >(1)*
> * % boost::log::attributes::local_clock()*
> * % boost::log::expressions::attr< severity_level
> >("Severity")*
> * % boost::log::expressions::message*
> * );*/*
>
> //We are going to define the formatter in a different style to try
> to get formatted output
> frontend -> set_formatter
> (
> boost::log::expressions::stream
> << boost::log::attributes::counter< unsigned int >(1)
> <<" ["<< boost::log::attributes::local_clock()
> <<"] <"<< boost::log::expressions::attr< severity_level >("Severity")
> <<"> "<< boost::log::expressions::message
> );
>
> The error I get is the next one:
>
> */home/victor/Programacion/workspace/opice/build-parallel/../libs/include/boost/log/utility/formatting_ostream.hpp:664:5:
> error: no match for ‘operator<<’ in ‘(&
> strm)->boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
> AllocatorT>::stream [with CharT = char, TraitsT = std::char_traits<char>,
> AllocatorT = std::allocator<char>,
> boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
> AllocatorT>::ostream_type = std::basic_ostream<char>]() << value’*
>
> And I really don't know what is happening. I also included a lot of files
> (I'm sure I included too much files, indeed) to be sure it was not caused
> by some undefined operator or something similar. However I still have the
> same problem. The includes are:
>
> #include <iostream>
> #include <fstream>
> #include <string>
>
> #include <boost/thread/shared_mutex.hpp>
>
> #include <boost/log/core.hpp>
> #include <boost/log/common.hpp>
> #include <boost/make_shared.hpp>
> #include <boost/log/expressions.hpp>
>
> #include <boost/log/utility/setup/file.hpp>
> #include <boost/log/utility/setup/console.hpp> //puede ser innecesario
> #include <boost/log/utility/setup/common_attributes.hpp> //puede
> ser innecesario
> #include <boost/log/utility/empty_deleter.hpp>
>
> #include<boost/thread/mutex.hpp>
> #include <boost/log/attributes/timer.hpp>
> #include <boost/log/attributes/mutable_constant.hpp>
> #include <boost/log/sources/severity_logger.hpp>
> #include <boost/log/utility/formatting_ostream.hpp>
>
> #include <boost/log/sinks/text_ostream_backend.hpp>
> #include <boost/log/sinks/sync_frontend.hpp>
>
> #include <boost/log/support/date_time.hpp>
>
> As you can see, they are probably redundant or innecessary but I could rip
> off that files when I could get the program compiled. Now, I'm out of ideas
> so any help you could bring me should be very appreciated. Thank you in
> advance.
>
> Victor Hevia
>
> _______________________________________________
> Boost-users mailing list
> Boost-users@lists.boost.org
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>
6 Nov
6 Nov
7:36 a.m.
New subject: [Log] Error with operator<< in basic_formatting_ostream
Thank you Johan. I have read that documentation before. Anyway, I
discovered that one of the problems I had is that I need to use formatters
types asociated with the variables (or objects) I want to use in the log,
but I was using the variable types instead. I'm working on it and when I
have everything working, I will post the changes here for future reference.
I think I have it under control :D Thank you!
El martes, 5 de noviembre de 2013 22:19:58 UTC+1, Johan Lundberg escribió:
>
> Hi,
>
> In the tutorial here:
>
> http://www.boost.org/doc/libs/1_54_0/libs/log/doc/html/log/tutorial/formatters.html
>
> There is a link to this example:
>
> http://www.boost.org/doc/libs/1_54_0/libs/log/example/doc/tutorial_fmt_format.cpp
>
> Which I can compile fine like this:
> g++ -DBOOST_ALL_DYN_LINK -Lboost-trunk155beta_inst/lib/ -lboost_system
> -lboost_log -lboost_filesystem -lboost_thread -I
> boost-trunk155beta_inst/include/ boost_log_format.cpp
>
> Could start from that?
>
> cheers, Johan
>
>
> 2013/11/5 Víctor Yo <rcpo...@gmail.com <javascript:>>
>
>> Hi ewveryone,
>>
>> I'm working lately with Boost.Log (I'm a newbie) library and I want to
>> write a logger with some parameters and formatting options. I followed the
>> documentation, I created a backend and a frontend and I tried to format the
>> output in the frontend with the set_formatter() function. I tried with the
>> Lambda style and with the Boost.Format style but I'm getting an error that
>> I can not locate. Iwas working on it for the last two whole days but I
>> couldn't find a solution. It is related with the basic_formatting_ostream,
>> but I don't understand what that means. I defined the backend and attached
>> to it two streams (to a file and to cout)
>>
>>
>> typedef boost::log::sinks::text_ostream_backend our_backend;
>> typedef boost::log::sinks::synchronous_sink<our_backend>
>> our_frontend;
>>
>>
>> //............................................................................................................................................
>>
>> boost::shared_ptr<our_backend> backend =
>> boost::make_shared<our_backend>();
>> //Stream definitions
>> boost::shared_ptr<std::ostream> stream_out(&std::cout,
>> boost::log::empty_deleter());
>> boost::shared_ptr<std::ostream> stream_file(new
>> std::ofstream("file_logger.log"));
>> backend -> add_stream(stream_out);
>> backend -> add_stream(stream_file);
>>
>> Created the frontend (and wrapping the backend to it)
>>
>> //Wrap the backend into the frontend and register in the core.
>> //The frontend provides synchronization for the backend.
>> boost::shared_ptr<our_frontend> frontend(new
>> our_frontend(backend));
>>
>> And now come the offending code which is supposed to format the output
>> (note that the first commented block was my first try). None of them works
>> and the error is the same in both cases:
>>
>> */*frontend -> set_formatter*
>> * (*
>> * boost::log::expressions::format("[%1%] %2%, File: %3%,
>> Line: %4% <%5%>: %6% ")*
>> * % boost::log::attributes::counter< unsigned int
>> >(1)*
>> * % boost::log::attributes::local_clock()*
>> * % boost::log::expressions::attr< severity_level
>> >("Severity")*
>> * % boost::log::expressions::message*
>> * );*/*
>>
>> //We are going to define the formatter in a different style to try
>> to get formatted output
>> frontend -> set_formatter
>> (
>> boost::log::expressions::stream
>> << boost::log::attributes::counter< unsigned int >(1)
>> <<" ["<< boost::log::attributes::local_clock()
>> <<"] <"<< boost::log::expressions::attr< severity_level >("Severity")
>> <<"> "<< boost::log::expressions::message
>> );
>>
>> The error I get is the next one:
>>
>> */home/victor/Programacion/workspace/opice/build-parallel/../libs/include/boost/log/utility/formatting_ostream.hpp:664:5:
>> error: no match for ‘operator<<’ in ‘(&
>> strm)->boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
>> AllocatorT>::stream [with CharT = char, TraitsT = std::char_traits<char>,
>> AllocatorT = std::allocator<char>,
>> boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
>> AllocatorT>::ostream_type = std::basic_ostream<char>]() << value’*
>>
>> And I really don't know what is happening. I also included a lot of files
>> (I'm sure I included too much files, indeed) to be sure it was not caused
>> by some undefined operator or something similar. However I still have the
>> same problem. The includes are:
>>
>> #include <iostream>
>> #include <fstream>
>> #include <string>
>>
>> #include <boost/thread/shared_mutex.hpp>
>>
>> #include <boost/log/core.hpp>
>> #include <boost/log/common.hpp>
>> #include <boost/make_shared.hpp>
>> #include <boost/log/expressions.hpp>
>>
>> #include <boost/log/utility/setup/file.hpp>
>> #include <boost/log/utility/setup/console.hpp> //puede ser
>> innecesario
>> #include <boost/log/utility/setup/common_attributes.hpp> //puede
>> ser innecesario
>> #include <boost/log/utility/empty_deleter.hpp>
>>
>> #include<boost/thread/mutex.hpp>
>> #include <boost/log/attributes/timer.hpp>
>> #include <boost/log/attributes/mutable_constant.hpp>
>> #include <boost/log/sources/severity_logger.hpp>
>> #include <boost/log/utility/formatting_ostream.hpp>
>>
>> #include <boost/log/sinks/text_ostream_backend.hpp>
>> #include <boost/log/sinks/sync_frontend.hpp>
>>
>> #include <boost/log/support/date_time.hpp>
>>
>> As you can see, they are probably redundant or innecessary but I could
>> rip off that files when I could get the program compiled. Now, I'm out of
>> ideas so any help you could bring me should be very appreciated. Thank you
>> in advance.
>>
>> Victor Hevia
>>
>> _______________________________________________
>> Boost-users mailing list
>> Boost...@lists.boost.org <javascript:>
>> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>>
>
>
7 Nov
7 Nov
8:10 a.m.
New subject: [Log] Error with operator<< in basic_formatting_ostream
As I said, I discovered that I was using incorrect names in the formatter.
I though that I had to use the same attribute names there but it happens
that I had to use the names associated to the formatter. I post the new
code for better understanding:
frontend -> set_formatter
(
boost::log::expressions::stream
<<_lineID
<<" ["<<boost::log::expressions::format_named_scope(_scope,
boost::log::keywords::format = "%n (%f:%l)")
<<"] "<< boost::log::expressions::format_date_time<
boost::posix_time::ptime >("TimeStamp", "%H:%M:%S")
<<" <"<<boost::log::expressions::attr< severity_level >("Severity")
<<"> "<<boost::log::expressions::message
);
In my firts code I used attributes names but it is customary to use
expressions names corresponding to the variables we want to use in the log.
However, I'm still having problems with the named_scope because it is not
working. I have nothing printed in the log messages when it is supposed to
print the scope, the file name and the line number. Anyone could help me
with that? Thank you very much.
El miércoles, 6 de noviembre de 2013 08:36:03 UTC+1, Víctor Yo escribió:
>
> Thank you Johan. I have read that documentation before. Anyway, I
> discovered that one of the problems I had is that I need to use formatters
> types asociated with the variables (or objects) I want to use in the log,
> but I was using the variable types instead. I'm working on it and when I
> have everything working, I will post the changes here for future reference.
> I think I have it under control :D Thank you!
>
> El martes, 5 de noviembre de 2013 22:19:58 UTC+1, Johan Lundberg escribió:
>>
>> Hi,
>>
>> In the tutorial here:
>>
>> http://www.boost.org/doc/libs/1_54_0/libs/log/doc/html/log/tutorial/formatters.html
>>
>> There is a link to this example:
>>
>> http://www.boost.org/doc/libs/1_54_0/libs/log/example/doc/tutorial_fmt_format.cpp
>>
>> Which I can compile fine like this:
>> g++ -DBOOST_ALL_DYN_LINK -Lboost-trunk155beta_inst/lib/ -lboost_system
>> -lboost_log -lboost_filesystem -lboost_thread -I
>> boost-trunk155beta_inst/include/ boost_log_format.cpp
>>
>> Could start from that?
>>
>> cheers, Johan
>>
>>
>> 2013/11/5 Víctor Yo <rcpo...@gmail.com>
>>
>>> Hi ewveryone,
>>>
>>> I'm working lately with Boost.Log (I'm a newbie) library and I want to
>>> write a logger with some parameters and formatting options. I followed the
>>> documentation, I created a backend and a frontend and I tried to format the
>>> output in the frontend with the set_formatter() function. I tried with the
>>> Lambda style and with the Boost.Format style but I'm getting an error that
>>> I can not locate. Iwas working on it for the last two whole days but I
>>> couldn't find a solution. It is related with the basic_formatting_ostream,
>>> but I don't understand what that means. I defined the backend and attached
>>> to it two streams (to a file and to cout)
>>>
>>>
>>> typedef boost::log::sinks::text_ostream_backend our_backend;
>>> typedef boost::log::sinks::synchronous_sink<our_backend>
>>> our_frontend;
>>>
>>>
>>> //............................................................................................................................................
>>>
>>> boost::shared_ptr<our_backend> backend =
>>> boost::make_shared<our_backend>();
>>> //Stream definitions
>>> boost::shared_ptr<std::ostream> stream_out(&std::cout,
>>> boost::log::empty_deleter());
>>> boost::shared_ptr<std::ostream> stream_file(new
>>> std::ofstream("file_logger.log"));
>>> backend -> add_stream(stream_out);
>>> backend -> add_stream(stream_file);
>>>
>>> Created the frontend (and wrapping the backend to it)
>>>
>>> //Wrap the backend into the frontend and register in the core.
>>> //The frontend provides synchronization for the backend.
>>> boost::shared_ptr<our_frontend> frontend(new
>>> our_frontend(backend));
>>>
>>> And now come the offending code which is supposed to format the output
>>> (note that the first commented block was my first try). None of them works
>>> and the error is the same in both cases:
>>>
>>> */*frontend -> set_formatter*
>>> * (*
>>> * boost::log::expressions::format("[%1%] %2%, File: %3%,
>>> Line: %4% <%5%>: %6% ")*
>>> * % boost::log::attributes::counter< unsigned int
>>> >(1)*
>>> * % boost::log::attributes::local_clock()*
>>> * % boost::log::expressions::attr< severity_level
>>> >("Severity")*
>>> * % boost::log::expressions::message*
>>> * );*/*
>>>
>>> //We are going to define the formatter in a different style to
>>> try to get formatted output
>>> frontend -> set_formatter
>>> (
>>> boost::log::expressions::stream
>>> << boost::log::attributes::counter< unsigned int >(1)
>>> <<" ["<< boost::log::attributes::local_clock()
>>> <<"] <"<< boost::log::expressions::attr< severity_level >("Severity")
>>> <<"> "<< boost::log::expressions::message
>>> );
>>>
>>> The error I get is the next one:
>>>
>>> */home/victor/Programacion/workspace/opice/build-parallel/../libs/include/boost/log/utility/formatting_ostream.hpp:664:5:
>>> error: no match for ‘operator<<’ in ‘(&
>>> strm)->boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
>>> AllocatorT>::stream [with CharT = char, TraitsT = std::char_traits<char>,
>>> AllocatorT = std::allocator<char>,
>>> boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
>>> AllocatorT>::ostream_type = std::basic_ostream<char>]() << value’*
>>>
>>> And I really don't know what is happening. I also included a lot of
>>> files (I'm sure I included too much files, indeed) to be sure it was not
>>> caused by some undefined operator or something similar. However I still
>>> have the same problem. The includes are:
>>>
>>> #include <iostream>
>>> #include <fstream>
>>> #include <string>
>>>
>>> #include <boost/thread/shared_mutex.hpp>
>>>
>>> #include <boost/log/core.hpp>
>>> #include <boost/log/common.hpp>
>>> #include <boost/make_shared.hpp>
>>> #include <boost/log/expressions.hpp>
>>>
>>> #include <boost/log/utility/setup/file.hpp>
>>> #include <boost/log/utility/setup/console.hpp> //puede ser
>>> innecesario
>>> #include <boost/log/utility/setup/common_attributes.hpp> //puede
>>> ser innecesario
>>> #include <boost/log/utility/empty_deleter.hpp>
>>>
>>> #include<boost/thread/mutex.hpp>
>>> #include <boost/log/attributes/timer.hpp>
>>> #include <boost/log/attributes/mutable_constant.hpp>
>>> #include <boost/log/sources/severity_logger.hpp>
>>> #include <boost/log/utility/formatting_ostream.hpp>
>>>
>>> #include <boost/log/sinks/text_ostream_backend.hpp>
>>> #include <boost/log/sinks/sync_frontend.hpp>
>>>
>>> #include <boost/log/support/date_time.hpp>
>>>
>>> As you can see, they are probably redundant or innecessary but I could
>>> rip off that files when I could get the program compiled. Now, I'm out of
>>> ideas so any help you could bring me should be very appreciated. Thank you
>>> in advance.
>>>
>>> Victor Hevia
>>>
>>> _______________________________________________
>>> Boost-users mailing list
>>> Boost...@lists.boost.org
>>> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>>>
>>
>>
14 Nov
14 Nov
1:25 p.m.
New subject: [Log] Error with operator<< in basic_formatting_ostream
I found the answer for the previous problem. When named_scope is used, the
BOOST_LOG_NAMED_SCOPED() must be used in every scope we want to register.
This macro fills the values of the named_scoped variables in order to be
available for the logger and the formatter.
El jueves, 7 de noviembre de 2013 09:10:56 UTC+1, Víctor Yo escribió:
>
> As I said, I discovered that I was using incorrect names in the formatter.
> I though that I had to use the same attribute names there but it happens
> that I had to use the names associated to the formatter. I post the new
> code for better understanding:
>
> frontend -> set_formatter
> (
> boost::log::expressions::stream
> <<_lineID
> <<" ["<<boost::log::expressions::format_named_scope(_scope,
> boost::log::keywords::format = "%n (%f:%l)")
> <<"] "<< boost::log::expressions::format_date_time<
> boost::posix_time::ptime >("TimeStamp", "%H:%M:%S")
> <<" <"<<boost::log::expressions::attr< severity_level >("Severity")
> <<"> "<<boost::log::expressions::message
> );
>
> In my firts code I used attributes names but it is customary to use
> expressions names corresponding to the variables we want to use in the log.
> However, I'm still having problems with the named_scope because it is not
> working. I have nothing printed in the log messages when it is supposed to
> print the scope, the file name and the line number. Anyone could help me
> with that? Thank you very much.
>
> El miércoles, 6 de noviembre de 2013 08:36:03 UTC+1, Víctor Yo escribió:
>>
>> Thank you Johan. I have read that documentation before. Anyway, I
>> discovered that one of the problems I had is that I need to use formatters
>> types asociated with the variables (or objects) I want to use in the log,
>> but I was using the variable types instead. I'm working on it and when I
>> have everything working, I will post the changes here for future reference.
>> I think I have it under control :D Thank you!
>>
>> El martes, 5 de noviembre de 2013 22:19:58 UTC+1, Johan Lundberg escribió:
>>>
>>> Hi,
>>>
>>> In the tutorial here:
>>>
>>> http://www.boost.org/doc/libs/1_54_0/libs/log/doc/html/log/tutorial/formatters.html
>>>
>>> There is a link to this example:
>>>
>>> http://www.boost.org/doc/libs/1_54_0/libs/log/example/doc/tutorial_fmt_format.cpp
>>>
>>> Which I can compile fine like this:
>>> g++ -DBOOST_ALL_DYN_LINK -Lboost-trunk155beta_inst/lib/ -lboost_system
>>> -lboost_log -lboost_filesystem -lboost_thread -I
>>> boost-trunk155beta_inst/include/ boost_log_format.cpp
>>>
>>> Could start from that?
>>>
>>> cheers, Johan
>>>
>>>
>>> 2013/11/5 Víctor Yo <rcpo...@gmail.com>
>>>
>>>> Hi ewveryone,
>>>>
>>>> I'm working lately with Boost.Log (I'm a newbie) library and I want to
>>>> write a logger with some parameters and formatting options. I followed the
>>>> documentation, I created a backend and a frontend and I tried to format the
>>>> output in the frontend with the set_formatter() function. I tried with the
>>>> Lambda style and with the Boost.Format style but I'm getting an error that
>>>> I can not locate. Iwas working on it for the last two whole days but I
>>>> couldn't find a solution. It is related with the basic_formatting_ostream,
>>>> but I don't understand what that means. I defined the backend and attached
>>>> to it two streams (to a file and to cout)
>>>>
>>>>
>>>> typedef boost::log::sinks::text_ostream_backend our_backend;
>>>> typedef boost::log::sinks::synchronous_sink<our_backend>
>>>> our_frontend;
>>>>
>>>>
>>>> //............................................................................................................................................
>>>>
>>>> boost::shared_ptr<our_backend> backend =
>>>> boost::make_shared<our_backend>();
>>>> //Stream definitions
>>>> boost::shared_ptr<std::ostream> stream_out(&std::cout,
>>>> boost::log::empty_deleter());
>>>> boost::shared_ptr<std::ostream> stream_file(new
>>>> std::ofstream("file_logger.log"));
>>>> backend -> add_stream(stream_out);
>>>> backend -> add_stream(stream_file);
>>>>
>>>> Created the frontend (and wrapping the backend to it)
>>>>
>>>> //Wrap the backend into the frontend and register in the core.
>>>> //The frontend provides synchronization for the backend.
>>>> boost::shared_ptr<our_frontend> frontend(new
>>>> our_frontend(backend));
>>>>
>>>> And now come the offending code which is supposed to format the output
>>>> (note that the first commented block was my first try). None of them works
>>>> and the error is the same in both cases:
>>>>
>>>> */*frontend -> set_formatter*
>>>> * (*
>>>> * boost::log::expressions::format("[%1%] %2%, File: %3%,
>>>> Line: %4% <%5%>: %6% ")*
>>>> * % boost::log::attributes::counter< unsigned int
>>>> >(1)*
>>>> * % boost::log::attributes::local_clock()*
>>>> * % boost::log::expressions::attr< severity_level
>>>> >("Severity")*
>>>> * % boost::log::expressions::message*
>>>> * );*/*
>>>>
>>>> //We are going to define the formatter in a different style to
>>>> try to get formatted output
>>>> frontend -> set_formatter
>>>> (
>>>> boost::log::expressions::stream
>>>> << boost::log::attributes::counter< unsigned int >(1)
>>>> <<" ["<< boost::log::attributes::local_clock()
>>>> <<"] <"<< boost::log::expressions::attr< severity_level >("Severity")
>>>> <<"> "<< boost::log::expressions::message
>>>> );
>>>>
>>>> The error I get is the next one:
>>>>
>>>> */home/victor/Programacion/workspace/opice/build-parallel/../libs/include/boost/log/utility/formatting_ostream.hpp:664:5:
>>>> error: no match for ‘operator<<’ in ‘(&
>>>> strm)->boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
>>>> AllocatorT>::stream [with CharT = char, TraitsT = std::char_traits<char>,
>>>> AllocatorT = std::allocator<char>,
>>>> boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT,
>>>> AllocatorT>::ostream_type = std::basic_ostream<char>]() << value’*
>>>>
>>>> And I really don't know what is happening. I also included a lot of
>>>> files (I'm sure I included too much files, indeed) to be sure it was not
>>>> caused by some undefined operator or something similar. However I still
>>>> have the same problem. The includes are:
>>>>
>>>> #include <iostream>
>>>> #include <fstream>
>>>> #include <string>
>>>>
>>>> #include <boost/thread/shared_mutex.hpp>
>>>>
>>>> #include <boost/log/core.hpp>
>>>> #include <boost/log/common.hpp>
>>>> #include <boost/make_shared.hpp>
>>>> #include <boost/log/expressions.hpp>
>>>>
>>>> #include <boost/log/utility/setup/file.hpp>
>>>> #include <boost/log/utility/setup/console.hpp> //puede ser
>>>> innecesario
>>>> #include <boost/log/utility/setup/common_attributes.hpp> //puede
>>>> ser innecesario
>>>> #include <boost/log/utility/empty_deleter.hpp>
>>>>
>>>> #include<boost/thread/mutex.hpp>
>>>> #include <boost/log/attributes/timer.hpp>
>>>> #include <boost/log/attributes/mutable_constant.hpp>
>>>> #include <boost/log/sources/severity_logger.hpp>
>>>> #include <boost/log/utility/formatting_ostream.hpp>
>>>>
>>>> #include <boost/log/sinks/text_ostream_backend.hpp>
>>>> #include <boost/log/sinks/sync_frontend.hpp>
>>>>
>>>> #include <boost/log/support/date_time.hpp>
>>>>
>>>> As you can see, they are probably redundant or innecessary but I could
>>>> rip off that files when I could get the program compiled. Now, I'm out of
>>>> ideas so any help you could bring me should be very appreciated. Thank you
>>>> in advance.
>>>>
>>>> Victor Hevia
>>>>
>>>> _______________________________________________
>>>> Boost-users mailing list
>>>> Boost...@lists.boost.org
>>>> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>>>>
>>>
>>>
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