64ba7d5be8
Convert a number of destructors to default synthesized functions. Try to inline a few instances into the header. It should be possible to inline all of them, however, gcc seems to emit a number of warnings. Furthermore, some of the destructors are pure-virtualed, but provide an implementation. Placing the definition into the header causes ODR violations.
119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/* vim: set sw=4 sts=4 et foldmethod=syntax : */
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/*
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* Copyright (c) 2008, 2010, 2011, 2012 Ciaran McCreesh
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*
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* This file is part of the Paludis package manager. Paludis is free software;
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* you can redistribute it and/or modify it under the terms of the GNU General
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* Public License version 2, as published by the Free Software Foundation.
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*
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* Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <paludis/util/tail_output_stream.hh>
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#include <paludis/util/pimp-impl.hh>
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#include <paludis/util/iterator_funcs.hh>
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#include <functional>
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#include <algorithm>
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#include <list>
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#include <mutex>
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using namespace paludis;
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namespace paludis
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{
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template <>
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struct Imp<TailOutputStreamBuf>
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{
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unsigned int n;
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const unsigned int size;
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std::list<std::string> tail;
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std::mutex mutex;
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Imp(const unsigned int nn) :
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n(1),
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size(nn)
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{
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tail.push_back("");
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}
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};
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}
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TailOutputStreamBuf::TailOutputStreamBuf(const unsigned int n) :
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_imp(n)
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{
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}
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TailOutputStreamBuf::~TailOutputStreamBuf() = default;
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TailOutputStreamBuf::int_type
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TailOutputStreamBuf::overflow(int_type c)
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{
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if (c != traits_type::eof())
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_append(std::string(1, c));
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return c;
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}
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std::streamsize
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TailOutputStreamBuf::xsputn(const char * s, std::streamsize num)
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{
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_append(std::string(s, num));
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return num;
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}
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void
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TailOutputStreamBuf::_append(const std::string & s)
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{
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std::unique_lock<std::mutex> lock(_imp->mutex);
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for (std::string::size_type p(0), p_end(s.length()) ; p != p_end ; ++p)
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{
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if ('\n' == s[p])
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{
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if (++_imp->n > _imp->size + 1)
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{
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_imp->tail.pop_front();
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--_imp->n;
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}
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_imp->tail.push_back("");
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}
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else
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_imp->tail.back().append(&s[p], 1);
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}
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}
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const std::shared_ptr<const Sequence<std::string> >
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TailOutputStreamBuf::tail(const bool clear)
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{
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std::shared_ptr<Sequence<std::string> > result(std::make_shared<Sequence<std::string>>());
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std::unique_lock<std::mutex> lock(_imp->mutex);
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for (std::list<std::string>::const_iterator i(_imp->tail.begin()), i_end(_imp->tail.end()), i_last(previous(_imp->tail.end())) ;
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i != i_end ; ++i)
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{
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if (i == i_last && i->empty())
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continue;
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result->push_back(*i);
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}
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if (clear)
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{
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_imp->tail.clear();
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_imp->n = 1;
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_imp->tail.push_back("");
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}
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return result;
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}
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namespace paludis
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{
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template class Pimp<TailOutputStreamBuf>;
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}
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