61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2010-2014 Danny Robson <danny@nerdcruft.net>
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*/
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#include "backtrace.hpp"
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#include "debug.hpp"
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#include "types/casts.hpp"
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#include <cstdlib>
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#include <execinfo.h>
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#include <algorithm>
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#include <memory>
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using namespace std;
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//-----------------------------------------------------------------------------
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debug::backtrace::backtrace (void):
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m_frames (DEFAULT_DEPTH) {
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size_t last;
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size_t size = m_frames.size ();
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while ((last = ::backtrace (&m_frames[0], m_frames.size ())) == size)
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m_frames.resize (size = m_frames.size () * 2);
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CHECK_GT (last, 0);
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m_frames.resize (last);
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}
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//-----------------------------------------------------------------------------
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ostream&
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debug::operator <<(ostream &os, const debug::backtrace &rhs) {
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const auto frames = rhs.frames ();
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// We don't use the array form of unique_ptr as clang fails on ambigious constructors
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typedef unique_ptr<char *, decltype(&std::free)> unique_str;
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unique_str names (backtrace_symbols (frames.data (), frames.size ()), ::free);
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for (unsigned int i = 0; i < frames.size (); ++i)
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os << frames[i] << "\t" << names.get()[i] << "\n";
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return os;
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}
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