mirror of
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a31ec74e51
Include winapi/config.hpp as soon as possible; avoid including even
Boost.Config before it so that it doesn't set Windows API version
accidentally by including some third party header. In all source files,
include detail/config.hpp or detail/setup_config.hpp first thing.
Moved all WinAPI config macros to the Jamfile.v2 and removed
windows_version.hpp as it was no longer needed. Also enabled inclusion of
windows.h while compiling the library.
Removed auto-linking with psapi.lib and advapi32.lib as it was no longer
working after ecf3114. Added linking with advapi32.lib to Jamfile.v2.
87 lines
3.1 KiB
C++
87 lines
3.1 KiB
C++
/*
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* Copyright Andrey Semashev 2007 - 2015.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*!
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* \file unhandled_exception_count.cpp
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* \author Andrey Semashev
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* \date 05.11.2012
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*
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* \brief This header is the Boost.Log library implementation, see the library documentation
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* at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
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*
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* The code in this file is based on the implementation by Evgeny Panasyuk:
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*
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* https://github.com/panaseleus/stack_unwinding/blob/master/boost/exception/uncaught_exception_count.hpp
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*/
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#include <boost/log/detail/config.hpp>
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#include <exception>
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#include <boost/log/detail/unhandled_exception_count.hpp>
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#include <boost/log/detail/header.hpp>
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namespace boost {
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BOOST_LOG_OPEN_NAMESPACE
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namespace aux {
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BOOST_LOG_ANONYMOUS_NAMESPACE {
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// cxxabi.h availability macro
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#if defined(BOOST_CLANG)
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# if defined(__has_include) && __has_include(<cxxabi.h>)
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# define BOOST_LOG_HAS_CXXABI_H
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# endif
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#elif defined(__GLIBCXX__) || defined(__GLIBCPP__)
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# define BOOST_LOG_HAS_CXXABI_H
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#endif
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#if defined(BOOST_LOG_HAS_CXXABI_H)
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// MinGW GCC 4.4 seem to not work the same way the newer GCC versions do. As a result, __cxa_get_globals based implementation will always return 0.
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// Just disable it for now and fall back to std::uncaught_exception().
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#if !defined(__MINGW32__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)))
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// Only GCC 4.7 declares __cxa_get_globals() in cxxabi.h, older compilers do not expose this function but it's there
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#define BOOST_LOG_HAS_CXA_GET_GLOBALS
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extern "C" void* __cxa_get_globals();
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#endif
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#elif defined(_MSC_VER)
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#if _MSC_VER >= 1900
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// Visual Studio 14 supports N4152 std::uncaught_exceptions()
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#define BOOST_LOG_HAS_UNCAUGHT_EXCEPTIONS
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#elif _MSC_VER >= 1400
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#define BOOST_LOG_HAS_GETPTD
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extern "C" void* _getptd();
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#endif
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#endif
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} // namespace
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//! Returns the number of currently pending exceptions
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BOOST_LOG_API unsigned int unhandled_exception_count() BOOST_NOEXCEPT
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{
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#if defined(BOOST_LOG_HAS_UNCAUGHT_EXCEPTIONS)
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// C++17 implementation
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return static_cast< unsigned int >(std::uncaught_exceptions());
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#elif defined(BOOST_LOG_HAS_CXA_GET_GLOBALS)
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// Tested on {clang 3.2,GCC 3.5.6,GCC 4.1.2,GCC 4.4.6,GCC 4.4.7}x{x32,x64}
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return *(reinterpret_cast< const unsigned int* >(static_cast< const char* >(__cxa_get_globals()) + sizeof(void*))); // __cxa_eh_globals::uncaughtExceptions, x32 offset - 0x4, x64 - 0x8
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#elif defined(BOOST_LOG_HAS_GETPTD)
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// MSVC specific. Tested on {MSVC2005SP1,MSVC2008SP1,MSVC2010SP1,MSVC2012}x{x32,x64}.
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return *(reinterpret_cast< const unsigned int* >(static_cast< const char* >(_getptd()) + (sizeof(void*) == 8 ? 0x100 : 0x90))); // _tiddata::_ProcessingThrow, x32 offset - 0x90, x64 - 0x100
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#else
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// Portable implementation. Does not allow to detect multiple nested exceptions.
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return static_cast< unsigned int >(std::uncaught_exception());
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#endif
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}
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} // namespace aux
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BOOST_LOG_CLOSE_NAMESPACE // namespace log
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} // namespace boost
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#include <boost/log/detail/footer.hpp>
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