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author | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
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committer | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
commit | 6ffe9e53658409f212834330e13564e4952558f6 (patch) | |
tree | 85b1e00183517648b228aafa7c8fb07f5276f419 /contrib/libs/llvm16/lib/Object/BuildID.cpp | |
parent | 726057070f9c5a91fc10fde0d5024913d10f1ab9 (diff) | |
download | ydb-6ffe9e53658409f212834330e13564e4952558f6.tar.gz |
YQ Connector: support managed ClickHouse
Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.
Diffstat (limited to 'contrib/libs/llvm16/lib/Object/BuildID.cpp')
-rw-r--r-- | contrib/libs/llvm16/lib/Object/BuildID.cpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/contrib/libs/llvm16/lib/Object/BuildID.cpp b/contrib/libs/llvm16/lib/Object/BuildID.cpp new file mode 100644 index 0000000000..795c22e769 --- /dev/null +++ b/contrib/libs/llvm16/lib/Object/BuildID.cpp @@ -0,0 +1,93 @@ +//===- llvm/Object/BuildID.cpp - Build ID ---------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +/// +/// \file +/// This file defines a library for handling Build IDs and using them to find +/// debug info. +/// +//===----------------------------------------------------------------------===// + +#include "llvm/Object/BuildID.h" + +#include "llvm/Object/ELFObjectFile.h" +#include "llvm/Support/FileSystem.h" +#include "llvm/Support/Path.h" + +namespace llvm { +namespace object { + +namespace { + +template <typename ELFT> +std::optional<BuildIDRef> getBuildID(const ELFFile<ELFT> &Obj) { + auto PhdrsOrErr = Obj.program_headers(); + if (!PhdrsOrErr) { + consumeError(PhdrsOrErr.takeError()); + return {}; + } + for (const auto &P : *PhdrsOrErr) { + if (P.p_type != ELF::PT_NOTE) + continue; + Error Err = Error::success(); + for (auto N : Obj.notes(P, Err)) + if (N.getType() == ELF::NT_GNU_BUILD_ID && + N.getName() == ELF::ELF_NOTE_GNU) + return N.getDesc(); + consumeError(std::move(Err)); + } + return {}; +} + +} // namespace + +std::optional<BuildIDRef> getBuildID(const ObjectFile *Obj) { + if (auto *O = dyn_cast<ELFObjectFile<ELF32LE>>(Obj)) + return getBuildID(O->getELFFile()); + if (auto *O = dyn_cast<ELFObjectFile<ELF32BE>>(Obj)) + return getBuildID(O->getELFFile()); + if (auto *O = dyn_cast<ELFObjectFile<ELF64LE>>(Obj)) + return getBuildID(O->getELFFile()); + if (auto *O = dyn_cast<ELFObjectFile<ELF64BE>>(Obj)) + return getBuildID(O->getELFFile()); + return std::nullopt; +} + +std::optional<std::string> BuildIDFetcher::fetch(BuildIDRef BuildID) const { + auto GetDebugPath = [&](StringRef Directory) { + SmallString<128> Path{Directory}; + sys::path::append(Path, ".build-id", + llvm::toHex(BuildID[0], /*LowerCase=*/true), + llvm::toHex(BuildID.slice(1), /*LowerCase=*/true)); + Path += ".debug"; + return Path; + }; + if (DebugFileDirectories.empty()) { + SmallString<128> Path = GetDebugPath( +#if defined(__NetBSD__) + // Try /usr/libdata/debug/.build-id/../... + "/usr/libdata/debug" +#else + // Try /usr/lib/debug/.build-id/../... + "/usr/lib/debug" +#endif + ); + if (llvm::sys::fs::exists(Path)) + return std::string(Path); + } else { + for (const auto &Directory : DebugFileDirectories) { + // Try <debug-file-directory>/.build-id/../... + SmallString<128> Path = GetDebugPath(Directory); + if (llvm::sys::fs::exists(Path)) + return std::string(Path); + } + } + return std::nullopt; +} + +} // namespace object +} // namespace llvm |