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| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="log.rationale.init_term_support"></a><a class="link" href="init_term_support.html" title="Does Boost.Log support logging at process initialization and termination?">Does Boost.Log support |
| logging at process initialization and termination?</a> |
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| <p> |
| It should be fine to use logging during the application initialization (i.e. |
| before <code class="computeroutput"><span class="identifier">main</span><span class="special">()</span></code> |
| starts). But there are a number of known problems with Boost.Log that prevent |
| it from being used at process termination (i.e. after the <code class="computeroutput"><span class="identifier">main</span><span class="special">()</span></code> function returns), so the official answer |
| to the second part is no. It may work though, in some very restricted setups, |
| if several rules are followed: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> |
| <li class="listitem"> |
| Do not create any objects at process termination, including loggers, |
| attributes or sinks. Try to create and cache the required objects as |
| soon as the application starts (maybe even before <code class="computeroutput"><span class="identifier">main</span><span class="special">()</span></code> starts). |
| </li> |
| <li class="listitem"> |
| Do not use global loggers at process termination. |
| </li> |
| <li class="listitem"> |
| Do not call <code class="computeroutput"><span class="identifier">logging</span><span class="special">::</span><span class="identifier">core</span><span class="special">::</span><span class="identifier">get</span><span class="special">()</span></code> |
| at process termination. Get that pointer as early as possible and keep |
| it until the process terminates. |
| </li> |
| <li class="listitem"> |
| Do not use named scopes in termination code. |
| </li> |
| </ul></div> |
| <p> |
| These rules don't guarantee that the library will work in termination context |
| but they may help to avoid problems. The library will get improved to support |
| this use case better. |
| </p> |
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| <td align="right"><div class="copyright-footer">Copyright © 2007-2015 Andrey |
| Semashev<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>). |
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