mirror of https://github.com/vitalif/grive2
73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
/*
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grive: an GPL program to sync a local directory with Google Drive
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Copyright (C) 2012 Wan Wai Ho
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation version 2
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of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "Backtrace.hh"
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#include "SymbolInfo.hh"
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#include "util/CArray.hh"
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#include <algorithm>
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#include <cstring>
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#include <sstream>
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namespace gr {
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Backtrace::Backtrace( std::size_t skip ) :
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m_count( SymbolInfo::Instance()->Backtrace(m_stack, Count(m_stack) )),
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m_skip( std::min( skip, m_count ) )
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{
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}
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Backtrace::Backtrace( const Backtrace& bt ) :
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m_count( bt.m_count ),
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m_skip( bt.m_skip )
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{
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std::memcpy( m_stack, bt.m_stack, m_count * sizeof(m_stack[0]) ) ;
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}
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/*! \brief operator<< for printing backtraces
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\internal
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This function will call SymbolInfo::PrintTrace() to print out a backtrace
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to the stream. It will use the SymbolInfo::Instance() singleton to get
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the symbol information.
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\param os The output stream.
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\param b The backtrace information.
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\sa SymbolInfo::Backtrace(), SymbolInfo::Instance()
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*/
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std::ostream& operator<<( std::ostream& os, const gr::Backtrace& b )
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{
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// the 1st function in the stack is SymbolInfo::Backtrace()
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// the 2nd one is the Backtrace() constructor
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// both are not interesting to user
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for ( std::size_t i = b.m_skip ; i < b.m_count ; i++ )
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SymbolInfo::Instance()->PrintTrace( b.m_stack[i], os, i - b.m_skip ) ;
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return os ;
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}
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std::string Backtrace::ToString( ) const
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{
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std::ostringstream oss ;
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oss << *this ;
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return oss.str( ) ;
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}
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} // end of namespace
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