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Diffstat (limited to 'indra/llcommon/llallocator_heap_profile.cpp')
| -rw-r--r-- | indra/llcommon/llallocator_heap_profile.cpp | 147 |
1 files changed, 147 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..b574ef668b --- /dev/null +++ b/indra/llcommon/llallocator_heap_profile.cpp @@ -0,0 +1,147 @@ +/** + * @file llallocator_heap_profile.cpp + * @brief Implementation of the parser for tcmalloc heap profile data. + * @author Brad Kittenbrink + * + * $LicenseInfo:firstyear=2009&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2010, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + +#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) +#pragma warning (disable:4702) +#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(j != line_elems.end()); + if (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(); +} + |