libs/log/example/doc/core_core_manual.cpp

   1 /*
   2  *          Copyright Andrey Semashev 2007 - 2014.
   3  * Distributed under the Boost Software License, Version 1.0.
   4  *    (See accompanying file LICENSE_1_0.txt or copy at
   5  *          http://www.boost.org/LICENSE_1_0.txt)
   6  */
   7
   8 #include <boost/smart_ptr/shared_ptr.hpp>
   9 #include <boost/move/utility.hpp>
  10 #include <boost/log/core.hpp>
  11 #include <boost/log/sources/record_ostream.hpp>
  12
  13 namespace logging = boost::log;
  14
  15 //[ example_core_core_manual_logging
  16 void logging_function(logging::attribute_set const& attrs)
  17 {
  18     boost::shared_ptr< logging::core > core = logging::core::get();
  19
  20     // Attempt to open a log record
  21     logging::record rec = core->open_record(attrs);
  22     if (rec)
  23     {
  24         // Ok, the record is accepted. Compose the message now.
  25         logging::record_ostream strm(rec);
  26         strm << "Hello, World!";
  27         strm.flush();
  28
  29         // Deliver the record to the sinks.
  30         core->push_record(boost::move(rec));
  31     }
  32 }
  33 //]
  34
  35 int main(int, char*[])
  36 {
  37     logging_function(logging::attribute_set());
  38
  39     return 0;
  40 }