56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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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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#include <folly/detail/SingletonStackTrace.h>
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#include <folly/experimental/symbolizer/ElfCache.h>
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#include <folly/experimental/symbolizer/Symbolizer.h>
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#include <folly/portability/Config.h>
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namespace folly {
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namespace detail {
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std::string getSingletonStackTrace() {
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#if FOLLY_HAVE_ELF && FOLLY_HAVE_DWARF
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// Get and symbolize stack trace
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constexpr size_t kMaxStackTraceDepth = 100;
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auto addresses =
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std::make_unique<symbolizer::FrameArray<kMaxStackTraceDepth>>();
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if (!getStackTraceSafe(*addresses)) {
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return "";
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} else {
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symbolizer::ElfCache elfCache;
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symbolizer::Symbolizer symbolizer(&elfCache);
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symbolizer.symbolize(*addresses);
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symbolizer::StringSymbolizePrinter printer;
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printer.println(*addresses);
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return printer.str();
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}
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#else
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return "";
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#endif // FOLLY_HAVE_ELF && FOLLY_HAVE_DWARF
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}
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} // namespace detail
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} // namespace folly
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