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Diffstat (limited to 'indra/llcommon/llallocator_heap_profile.cpp')
| -rw-r--r-- | indra/llcommon/llallocator_heap_profile.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/indra/llcommon/llallocator_heap_profile.cpp b/indra/llcommon/llallocator_heap_profile.cpp new file mode 100644 index 0000000000..d82ee9ed81 --- /dev/null +++ b/indra/llcommon/llallocator_heap_profile.cpp @@ -0,0 +1,149 @@ +/** + * @file llallocator_heap_profile.cpp + * @brief Implementation of the parser for tcmalloc heap profile data. + * @author Brad Kittenbrink + * + * $LicenseInfo:firstyear=2009&license=viewergpl$ + * + * Copyright (c) 2009-2009, Linden Research, Inc. + * + * Second Life Viewer Source Code + * The source code in this file ("Source Code") is provided by Linden Lab + * to you under the terms of the GNU General Public License, version 2.0 + * ("GPL"), unless you have obtained a separate licensing agreement + * ("Other License"), formally executed by you and Linden Lab. Terms of + * the GPL can be found in doc/GPL-license.txt in this distribution, or + * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 + * + * There are special exceptions to the terms and conditions of the GPL as + * it is applied to this Source Code. View the full text of the exception + * in the file doc/FLOSS-exception.txt in this software distribution, or + * online at + * http://secondlifegrid.net/programs/open_source/licensing/flossexception + * + * By copying, modifying or distributing this software, you acknowledge + * that you have read and understood your obligations described above, + * and agree to abide by those obligations. + * + * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO + * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, + * COMPLETENESS OR PERFORMANCE. + * $/LicenseInfo$ + */ + +#include "linden_common.h" +#include "llallocator_heap_profile.h" + +#if LL_MSVC +// disable warning about boost::lexical_cast returning uninitialized data +// when it fails to parse the string +#pragma warning (disable:4701) +#endif + +#include <boost/algorithm/string/split.hpp> +#include <boost/bind.hpp> +#include <boost/lexical_cast.hpp> +#include <boost/range/iterator_range.hpp> + +static const std::string HEAP_PROFILE_MAGIC_STR = "heap profile:"; + +static bool is_separator(char c) +{ + return isspace(c) || c == '[' || c == ']' || c == ':'; +} + +void LLAllocatorHeapProfile::parse(std::string const & prof_text) +{ + // a typedef for handling a token in the string buffer + // it's a begin/end pair of string::const_iterators + typedef boost::iterator_range<std::string::const_iterator> range_t; + + mLines.clear(); + + if(prof_text.compare(0, HEAP_PROFILE_MAGIC_STR.length(), HEAP_PROFILE_MAGIC_STR) != 0) + { + // *TODO - determine if there should be some better error state than + // mLines being empty. -brad + llwarns << "invalid heap profile data passed into parser." << llendl; + return; + } + + std::vector< range_t > prof_lines; + + std::string::const_iterator prof_begin = prof_text.begin() + HEAP_PROFILE_MAGIC_STR.length(); + + range_t prof_range(prof_begin, prof_text.end()); + boost::algorithm::split(prof_lines, + prof_range, + boost::bind(std::equal_to<llwchar>(), '\n', _1)); + + std::vector< range_t >::const_iterator i; + for(i = prof_lines.begin(); i != prof_lines.end() && !i->empty(); ++i) + { + range_t const & line_text = *i; + + std::vector<range_t> line_elems; + + boost::algorithm::split(line_elems, + line_text, + is_separator); + + std::vector< range_t >::iterator j; + j = line_elems.begin(); + + while(j != line_elems.end() && j->empty()) { ++j; } // skip any separator tokens + llassert_always(j != line_elems.end()); + U32 live_count = boost::lexical_cast<U32>(*j); + ++j; + + while(j != line_elems.end() && j->empty()) { ++j; } // skip any separator tokens + llassert_always(j != line_elems.end()); + U64 live_size = boost::lexical_cast<U64>(*j); + ++j; + + while(j != line_elems.end() && j->empty()) { ++j; } // skip any separator tokens + llassert_always(j != line_elems.end()); + U32 tot_count = boost::lexical_cast<U32>(*j); + ++j; + + while(j != line_elems.end() && j->empty()) { ++j; } // skip any separator tokens + llassert_always(j != line_elems.end()); + U64 tot_size = boost::lexical_cast<U64>(*j); + ++j; + + while(j != line_elems.end() && j->empty()) { ++j; } // skip any separator tokens + llassert_always(j != line_elems.end()); + ++j; // skip the '@' + + mLines.push_back(line(live_count, live_size, tot_count, tot_size)); + line & current_line = mLines.back(); + + for(; j != line_elems.end(); ++j) + { + if(!j->empty()) { + U32 marker = boost::lexical_cast<U32>(*j); + current_line.mTrace.push_back(marker); + } + } + } + + // *TODO - parse MAPPED_LIBRARIES section here if we're ever interested in it +} + +void LLAllocatorHeapProfile::dump(std::ostream & out) const +{ + lines_t::const_iterator i; + for(i = mLines.begin(); i != mLines.end(); ++i) + { + out << i->mLiveCount << ": " << i->mLiveSize << '[' << i->mTotalCount << ": " << i->mTotalSize << "] @"; + + stack_trace::const_iterator j; + for(j = i->mTrace.begin(); j != i->mTrace.end(); ++j) + { + out << ' ' << *j; + } + out << '\n'; + } + out.flush(); +} + |