Index: test/tools/llvm-xray/X86/Inputs/simple-xray-instrmap.yaml =================================================================== --- /dev/null +++ test/tools/llvm-xray/X86/Inputs/simple-xray-instrmap.yaml @@ -0,0 +1,14 @@ +--- +- { id: 1, address: 0x000000000041CA40, function: 0x000000000041CA40, kind: function-enter, + always-instrument: true } +- { id: 1, address: 0x000000000041CA50, function: 0x000000000041CA40, kind: tail-exit, + always-instrument: true } +- { id: 2, address: 0x000000000041CA70, function: 0x000000000041CA70, kind: function-enter, + always-instrument: true } +- { id: 2, address: 0x000000000041CA7C, function: 0x000000000041CA70, kind: tail-exit, + always-instrument: true } +- { id: 3, address: 0x000000000041CAA0, function: 0x000000000041CAA0, kind: function-enter, + always-instrument: true } +- { id: 3, address: 0x000000000041CAB4, function: 0x000000000041CAA0, kind: function-exit, + always-instrument: true } +... Index: test/tools/llvm-xray/X86/bad-instrmap-sizes.bin =================================================================== --- /dev/null +++ test/tools/llvm-xray/X86/bad-instrmap-sizes.bin @@ -1,3 +0,0 @@ -; RUN: not llvm-xray extract %S/Inputs/elf64-badentrysizes.bin 2>&1 | FileCheck %s -; CHECK: llvm-xray: Cannot extract instrumentation map from '{{.*}}elf64-badentrysizes.bin'. -; CHECK-NEXT: Instrumentation map entries not evenly divisible by size of an XRay sled entry in ELF64. Index: test/tools/llvm-xray/X86/convert-to-yaml.txt =================================================================== --- /dev/null +++ test/tools/llvm-xray/X86/convert-to-yaml.txt @@ -0,0 +1,23 @@ +; RUN: llvm-xray convert %S/Inputs/naive-log-simple.xray -f=yaml -o - | FileCheck %s + +; CHECK: --- +; CHECK-NEXT: header: +; CHECK-NEXT: version: 1 +; CHECK-NEXT: type: 0 +; CHECK-NEXT: constant-tsc: true +; CHECK-NEXT: nonstop-tsc: true +; CHECK-NEXT: cycle-frequency: 2601000000 +; CHECK-NEXT: records: +; CHECK-NEXT: - { type: 0, func-id: 3, function: '3', cpu: 37, thread: 84697, kind: function-enter, +; CHECK-NEXT: tsc: 3315356841453914 } +; CHECK-NEXT: - { type: 0, func-id: 2, function: '2', cpu: 37, thread: 84697, kind: function-enter, +; CHECK-NEXT: tsc: 3315356841454542 } +; CHECK-NEXT: - { type: 0, func-id: 2, function: '2', cpu: 37, thread: 84697, kind: function-exit, +; CHECK-NEXT: tsc: 3315356841454670 } +; CHECK-NEXT: - { type: 0, func-id: 1, function: '1', cpu: 37, thread: 84697, kind: function-enter, +; CHECK-NEXT: tsc: 3315356841454762 } +; CHECK-NEXT: - { type: 0, func-id: 1, function: '1', cpu: 37, thread: 84697, kind: function-exit, +; CHECK-NEXT: tsc: 3315356841454802 } +; CHECK-NEXT: - { type: 0, func-id: 3, function: '3', cpu: 37, thread: 84697, kind: function-exit, +; CHECK-NEXT: tsc: 3315356841494828 } +; CHECK-NEXT: ... Index: test/tools/llvm-xray/X86/convert-with-debug-syms.txt =================================================================== --- /dev/null +++ test/tools/llvm-xray/X86/convert-with-debug-syms.txt @@ -0,0 +1,23 @@ +; RUN: llvm-xray convert -m %S/Inputs/elf64-sample-o2.bin -y %S/Inputs/naive-log-simple.xray -f=yaml -o - 2>&1 | FileCheck %s + +; CHECK: --- +; CHECK-NEXT: header: +; CHECK-NEXT: version: 1 +; CHECK-NEXT: type: 0 +; CHECK-NEXT: constant-tsc: true +; CHECK-NEXT: nonstop-tsc: true +; CHECK-NEXT: cycle-frequency: 2601000000 +; CHECK-NEXT: records: +; CHECK-NEXT: - { type: 0, func-id: 3, function: main, cpu: 37, thread: 84697, kind: function-enter, +; CHECK-NEXT: tsc: 3315356841453914 } +; CHECK-NEXT: - { type: 0, func-id: 2, function: 'foo()', cpu: 37, thread: 84697, kind: function-enter, +; CHECK-NEXT: tsc: 3315356841454542 } +; CHECK-NEXT: - { type: 0, func-id: 2, function: 'foo()', cpu: 37, thread: 84697, kind: function-exit, +; CHECK-NEXT: tsc: 3315356841454670 } +; CHECK-NEXT: - { type: 0, func-id: 1, function: 'bar()', cpu: 37, thread: 84697, kind: function-enter, +; CHECK-NEXT: tsc: 3315356841454762 } +; CHECK-NEXT: - { type: 0, func-id: 1, function: 'bar()', cpu: 37, thread: 84697, kind: function-exit, +; CHECK-NEXT: tsc: 3315356841454802 } +; CHECK-NEXT: - { type: 0, func-id: 3, function: main, cpu: 37, thread: 84697, kind: function-exit, +; CHECK-NEXT: tsc: 3315356841494828 } +; CHECK-NEXT: ... Index: test/tools/llvm-xray/X86/convert-with-standalone-instrmap.txt =================================================================== --- /dev/null +++ test/tools/llvm-xray/X86/convert-with-standalone-instrmap.txt @@ -0,0 +1,23 @@ +; RUN: llvm-xray convert -m %S/Inputs/elf64-objcopied-instrmap.bin -y %S/Inputs/naive-log-simple.xray -f=yaml -o - 2>&1 | FileCheck %s + +; CHECK: --- +; CHECK-NEXT: header: +; CHECK-NEXT: version: 1 +; CHECK-NEXT: type: 0 +; CHECK-NEXT: constant-tsc: true +; CHECK-NEXT: nonstop-tsc: true +; CHECK-NEXT: cycle-frequency: 2601000000 +; CHECK-NEXT: records: +; CHECK-NEXT: - { type: 0, func-id: 3, function: '@(41caa0)', cpu: 37, thread: 84697, +; CHECK-NEXT: kind: function-enter, tsc: 3315356841453914 } +; CHECK-NEXT: - { type: 0, func-id: 2, function: '@(41ca70)', cpu: 37, thread: 84697, +; CHECK-NEXT: kind: function-enter, tsc: 3315356841454542 } +; CHECK-NEXT: - { type: 0, func-id: 2, function: '@(41ca70)', cpu: 37, thread: 84697, +; CHECK-NEXT: kind: function-exit, tsc: 3315356841454670 } +; CHECK-NEXT: - { type: 0, func-id: 1, function: '@(41ca40)', cpu: 37, thread: 84697, +; CHECK-NEXT: kind: function-enter, tsc: 3315356841454762 } +; CHECK-NEXT: - { type: 0, func-id: 1, function: '@(41ca40)', cpu: 37, thread: 84697, +; CHECK-NEXT: kind: function-exit, tsc: 3315356841454802 } +; CHECK-NEXT: - { type: 0, func-id: 3, function: '@(41caa0)', cpu: 37, thread: 84697, +; CHECK-NEXT: kind: function-exit, tsc: 3315356841494828 } +; CHECK-NEXT: ... Index: test/tools/llvm-xray/X86/convert-with-yaml-instrmap.txt =================================================================== --- /dev/null +++ test/tools/llvm-xray/X86/convert-with-yaml-instrmap.txt @@ -0,0 +1,23 @@ +; RUN: llvm-xray convert -m %S/Inputs/simple-xray-instrmap.yaml -t yaml %S/Inputs/naive-log-simple.xray -f=yaml -o - | FileCheck %s + +; CHECK: --- +; CHECK-NEXT: header: +; CHECK-NEXT: version: 1 +; CHECK-NEXT: type: 0 +; CHECK-NEXT: constant-tsc: true +; CHECK-NEXT: nonstop-tsc: true +; CHECK-NEXT: cycle-frequency: 2601000000 +; CHECK-NEXT: records: +; CHECK-NEXT: - { type: 0, func-id: 3, function: '3', cpu: 37, thread: 84697, kind: function-enter, +; CHECK-NEXT: tsc: 3315356841453914 } +; CHECK-NEXT: - { type: 0, func-id: 2, function: '2', cpu: 37, thread: 84697, kind: function-enter, +; CHECK-NEXT: tsc: 3315356841454542 } +; CHECK-NEXT: - { type: 0, func-id: 2, function: '2', cpu: 37, thread: 84697, kind: function-exit, +; CHECK-NEXT: tsc: 3315356841454670 } +; CHECK-NEXT: - { type: 0, func-id: 1, function: '1', cpu: 37, thread: 84697, kind: function-enter, +; CHECK-NEXT: tsc: 3315356841454762 } +; CHECK-NEXT: - { type: 0, func-id: 1, function: '1', cpu: 37, thread: 84697, kind: function-exit, +; CHECK-NEXT: tsc: 3315356841454802 } +; CHECK-NEXT: - { type: 0, func-id: 3, function: '3', cpu: 37, thread: 84697, kind: function-exit, +; CHECK-NEXT: tsc: 3315356841494828 } +; CHECK-NEXT: ... Index: tools/llvm-xray/CMakeLists.txt =================================================================== --- tools/llvm-xray/CMakeLists.txt +++ tools/llvm-xray/CMakeLists.txt @@ -1,10 +1,16 @@ set(LLVM_LINK_COMPONENTS ${LLVM_TARGETS_TO_BUILD} + DebugInfoDWARF + Object Support - Object) + Symbolize) set(LLVM_XRAY_TOOLS + func-id-helper.cc + xray-converter.cc xray-extract.cc + xray-extract.cc + xray-log-reader.cc xray-registry.cc) add_llvm_tool(llvm-xray llvm-xray.cc ${LLVM_XRAY_TOOLS}) Index: tools/llvm-xray/func-id-helper.h =================================================================== --- /dev/null +++ tools/llvm-xray/func-id-helper.h @@ -0,0 +1,49 @@ +//===- func-id-helper.h - XRay Function ID Conversion Helpers -------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Defines helper tools dealing with XRay-generated function ids. +// +//===----------------------------------------------------------------------===// +#ifndef LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H +#define LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H + +#include "llvm/DebugInfo/Symbolize/Symbolize.h" +#include + +namespace llvm { +namespace xray { + +// This class consolidates common operations related to Function IDs. +class FuncIdConversionHelper { +public: + using FunctionAddressMap = std::unordered_map; + +private: + std::string BinaryInstrMap; + symbolize::LLVMSymbolizer &Symbolizer; + const FunctionAddressMap &FunctionAddresses; + +public: + FuncIdConversionHelper(std::string BinaryInstrMap, + symbolize::LLVMSymbolizer &Symbolizer, + const FunctionAddressMap &FunctionAddresses) + : BinaryInstrMap(std::move(BinaryInstrMap)), Symbolizer(Symbolizer), + FunctionAddresses(FunctionAddresses) {} + + // Returns the symbol or a string representation of the function id. + std::string SymbolOrNumber(int32_t FuncId) const; + + // Returns the file and column from debug info for the given function id. + std::string FileLineAndColumn(int32_t FuncId) const; +}; + +} // namespace xray +} // namespace llvm + +#endif // LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H Index: tools/llvm-xray/func-id-helper.cc =================================================================== --- /dev/null +++ tools/llvm-xray/func-id-helper.cc @@ -0,0 +1,58 @@ +//===- xray-fc-account.cc - XRay Function Call Accounting Tool ------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Implementation of the helper tools dealing with XRay-generated function ids. +// +//===----------------------------------------------------------------------===// + +#include "func-id-helper.h" +#include "llvm/Support/Path.h" +#include + +using namespace llvm; +using namespace xray; + +std::string FuncIdConversionHelper::SymbolOrNumber(int32_t FuncId) const { + std::ostringstream F; + auto It = FunctionAddresses.find(FuncId); + if (It == FunctionAddresses.end()) { + F << "#" << FuncId; + return F.str(); + } + + if (auto ResOrErr = Symbolizer.symbolizeCode(BinaryInstrMap, It->second)) { + auto &DI = *ResOrErr; + if (DI.FunctionName == "") + F << "@(" << std::hex << It->second << ")"; + else + F << DI.FunctionName; + } else + handleAllErrors(ResOrErr.takeError(), [&](const ErrorInfoBase &) { + F << "@(" << std::hex << It->second << ")"; + }); + + return F.str(); +} + +std::string FuncIdConversionHelper::FileLineAndColumn(int32_t FuncId) const { + auto It = FunctionAddresses.find(FuncId); + if (It == FunctionAddresses.end()) + return "(unknown)"; + + std::ostringstream F; + if (auto ResOrErr = Symbolizer.symbolizeCode(BinaryInstrMap, It->second)) { + auto &DI = *ResOrErr; + F << sys::path::filename(DI.FileName).str() << ":" << DI.Line << ":" + << DI.Column; + } else + handleAllErrors(ResOrErr.takeError(), + [&](const ErrorInfoBase &) { F << "(unknown)"; }); + + return F.str(); +} Index: tools/llvm-xray/xray-converter.h =================================================================== --- /dev/null +++ tools/llvm-xray/xray-converter.h @@ -0,0 +1,38 @@ +//===- xray-converter.h - XRay Trace Conversion ---------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Defines the TraceConverter class for turning binary traces into +// human-readable text and vice versa. +// +//===----------------------------------------------------------------------===// +#ifndef LLVM_TOOLS_LLVM_XRAY_XRAY_CONVERTER_H +#define LLVM_TOOLS_LLVM_XRAY_XRAY_CONVERTER_H + +#include "func-id-helper.h" +#include "xray-log-reader.h" +#include "xray-record.h" + +namespace llvm { +namespace xray { + +class TraceConverter { + FuncIdConversionHelper &FuncIdHelper; + bool Symbolize; + +public: + TraceConverter(FuncIdConversionHelper &FuncIdHelper, bool Symbolize = false) + : FuncIdHelper(FuncIdHelper), Symbolize(Symbolize) {} + + void exportAsYAML(const LogReader &Records, raw_ostream &OS); +}; + +} // namespace xray +} // namespace llvm + +#endif // LLVM_TOOLS_LLVM_XRAY_XRAY_CONVERTER_H Index: tools/llvm-xray/xray-converter.cc =================================================================== --- /dev/null +++ tools/llvm-xray/xray-converter.cc @@ -0,0 +1,183 @@ +//===- xray-converter.cc - XRay Trace Conversion --------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Implements the trace conversion functions. +// +//===----------------------------------------------------------------------===// +#include "xray-converter.h" + +#include "xray-extract.h" +#include "xray-record-yaml.h" +#include "xray-registry.h" +#include "llvm/DebugInfo/Symbolize/Symbolize.h" +#include "llvm/Support/FileSystem.h" +#include "llvm/Support/YAMLTraits.h" +#include "llvm/Support/raw_ostream.h" +#include + +using namespace llvm; +using namespace xray; + +// llvm-xray convert +// ---------------------------------------------------------------------------- +static cl::SubCommand Convert("convert", "Trace Format Conversion"); +static cl::opt ConvertInput(cl::Positional, + cl::desc(""), + cl::Required, cl::sub(Convert)); +enum class ConvertFormats { BINARY, YAML }; +static cl::opt ConvertInputFormat( + "input-format", cl::desc("input format"), + cl::values(clEnumValN(ConvertFormats::BINARY, "raw", + "input is in raw binary"), + clEnumValN(ConvertFormats::YAML, "yaml", "input is in yaml")), + cl::sub(Convert)); +static cl::alias ConvertInputFormat2("i", cl::aliasopt(ConvertInputFormat), + cl::desc("Alias for -input-format"), + cl::sub(Convert)); +static cl::opt ConvertOutputFormat( + "output-format", cl::desc("output format"), + cl::values(clEnumValN(ConvertFormats::BINARY, "raw", "output in binary"), + clEnumValN(ConvertFormats::YAML, "yaml", "output in yaml")), + cl::sub(Convert)); +static cl::alias ConvertOutputFormat2("f", cl::aliasopt(ConvertOutputFormat), + cl::desc("Alias for -output-format"), + cl::sub(Convert)); +static cl::opt + ConvertOutput("output", cl::value_desc("output file"), cl::init("-"), + cl::desc("output file; use '-' for stdout"), + cl::sub(Convert)); +static cl::alias ConvertOutput2("o", cl::aliasopt(ConvertOutput), + cl::desc("Alias for -output"), + cl::sub(Convert)); + +static cl::opt + ConvertSymbolize("symbolize", + cl::desc("symbolize function ids from the input log"), + cl::init(false), cl::sub(Convert)); +static cl::alias ConvertSymbolize2("y", cl::aliasopt(ConvertSymbolize), + cl::desc("Alias for -symbolize"), + cl::sub(Convert)); + +static cl::opt + ConvertInstrMap("instr_map", + cl::desc("binary with the instrumentation map, or " + "a separate instrumentation map"), + cl::value_desc("binary with xray_instr_map"), + cl::sub(Convert), cl::init("")); +static cl::alias ConvertInstrMap2("m", cl::aliasopt(ConvertInstrMap), + cl::desc("Alias for -instr_map"), + cl::sub(Convert)); +static cl::opt ConvertSortInput( + "sort", + cl::desc("determines whether to sort input log records by timestamp"), + cl::sub(Convert), cl::init(true)); +static cl::alias ConvertSortInput2("s", cl::aliasopt(ConvertSortInput), + cl::desc("Alias for -sort"), + cl::sub(Convert)); +static cl::opt InstrMapFormat( + "instr-map-format", cl::desc("format of instrumentation map"), + cl::values(clEnumValN(InstrumentationMapExtractor::InputFormats::ELF, "elf", + "instrumentation map in an ELF header"), + clEnumValN(InstrumentationMapExtractor::InputFormats::YAML, + "yaml", "instrumentation map in YAML")), + cl::sub(Convert), cl::init(InstrumentationMapExtractor::InputFormats::ELF)); +static cl::alias InstrMapFormat2("t", cl::aliasopt(InstrMapFormat), + cl::desc("Alias for -instr-map-format"), + cl::sub(Convert)); + +using llvm::yaml::MappingTraits; +using llvm::yaml::ScalarEnumerationTraits; +using llvm::yaml::IO; +using llvm::yaml::Output; + +void TraceConverter::exportAsYAML(const LogReader &Records, raw_ostream &OS) { + YAMLXRayTrace Trace; + const auto &FH = Records.getFileHeader(); + Trace.Header = {FH.Version, FH.Type, FH.ConstantTSC, FH.NonstopTSC, + FH.CycleFrequency}; + Trace.Records.reserve(Records.size()); + for (const auto &R : Records) { + Trace.Records.push_back({R.RecordType, R.CPU, R.Type, R.FuncId, + Symbolize ? FuncIdHelper.SymbolOrNumber(R.FuncId) + : std::to_string(R.FuncId), + R.TSC, R.TId}); + } + Output Out(OS); + Out << Trace; +} + +namespace llvm { +namespace xray { + +static CommandRegistration Unused(&Convert, [] { + + // FIXME: Support conversion to BINARY when upgrading XRay trace versions. + if (ConvertOutputFormat == ConvertFormats::BINARY) + return make_error( + "Conversion to binary not supported yet.", + std::make_error_code(std::errc::function_not_supported)); + + int Fd; + auto EC = sys::fs::openFileForRead(ConvertInput, Fd); + if (EC) + return make_error( + Twine("Cannot open file '") + ConvertInput + "'", EC); + + Error Err; + xray::InstrumentationMapExtractor Extractor(ConvertInstrMap, InstrMapFormat, + Err); + errs() << toString(std::move(Err)); + + const auto &FunctionAddresses = Extractor.getFunctionAddresses(); + symbolize::LLVMSymbolizer::Options Opts( + symbolize::FunctionNameKind::LinkageName, true, true, false, ""); + symbolize::LLVMSymbolizer Symbolizer(Opts); + llvm::xray::FuncIdConversionHelper FuncIdHelper(ConvertInstrMap, Symbolizer, + FunctionAddresses); + llvm::xray::TraceConverter TC(FuncIdHelper, ConvertSymbolize); + LogReader::LoaderFunction Loader; + switch (ConvertInputFormat) { + case ConvertFormats::BINARY: + Loader = NaiveLogLoader; + break; + case ConvertFormats::YAML: + Loader = YAMLLogLoader; + break; + }; + + LogReader Reader(ConvertInput, Err, ConvertSortInput, Loader); + if (Err) + return joinErrors( + make_error( + Twine("Failed loading input file '") + ConvertInput + "'.", + std::make_error_code(std::errc::protocol_error)), + std::move(Err)); + + raw_fd_ostream OS(ConvertOutput, EC, + ConvertOutputFormat == ConvertFormats::BINARY + ? sys::fs::OpenFlags::F_None + : sys::fs::OpenFlags::F_Text); + if (EC) + return make_error( + Twine("Cannot open file '") + ConvertOutput + "' for writing.", EC); + + switch (ConvertOutputFormat) { + case ConvertFormats::YAML: + TC.exportAsYAML(Reader, OS); + break; + default: + return make_error( + "Unsupported output format provided.", + std::make_error_code(std::errc::function_not_supported)); + } + return Error::success(); +}); + +} // namespace xray +} // namespace llvm Index: tools/llvm-xray/xray-extract.cc =================================================================== --- tools/llvm-xray/xray-extract.cc +++ tools/llvm-xray/xray-extract.cc @@ -185,6 +185,44 @@ return llvm::Error::success(); } +Error LoadYAMLInstrMap( + StringRef Filename, std::deque &Sleds, + InstrumentationMapExtractor::FunctionAddressMap &InstrMap, + InstrumentationMapExtractor::FunctionAddressReverseMap &FunctionIds) { + int Fd; + if (auto EC = sys::fs::openFileForRead(Filename, Fd)) + return make_error( + Twine("Failed opening file '") + Filename + "' for reading.", EC); + + uint64_t FileSize; + if (auto EC = sys::fs::file_size(Filename, FileSize)) + return make_error( + Twine("Failed getting size of file '") + Filename + "'.", EC); + + std::error_code EC; + sys::fs::mapped_file_region MappedFile( + Fd, sys::fs::mapped_file_region::mapmode::readonly, FileSize, 0, EC); + if (EC) + return make_error( + Twine("Failed memory-mapping file '") + Filename + "'.", EC); + + std::vector YAMLSleds; + Input In(StringRef(MappedFile.data(), MappedFile.size())); + In >> YAMLSleds; + if (In.error()) + return make_error( + Twine("Failed loading YAML document from '") + Filename + "'.", + In.error()); + + for (const auto &Y : YAMLSleds) { + InstrMap[Y.FuncId] = Y.Function; + FunctionIds[Y.Function] = Y.FuncId; + Sleds.emplace_back( + SledEntry{Y.Address, Y.Function, Y.Kind, Y.AlwaysInstrument}); + } + return Error::success(); +} + } // namespace InstrumentationMapExtractor::InstrumentationMapExtractor(std::string Filename, @@ -195,20 +233,30 @@ case InputFormats::ELF: { EC = handleErrors( LoadBinaryInstrELF(Filename, Sleds, FunctionAddresses, FunctionIds), - [](std::unique_ptr E) { + [&](std::unique_ptr E) { return joinErrors( make_error( Twine("Cannot extract instrumentation map from '") + - ExtractInput + "'.", + Filename + "'.", std::make_error_code(std::errc::executable_format_error)), std::move(E)); }); break; } - default: - llvm_unreachable("Input format type not supported yet."); + case InputFormats::YAML: { + EC = handleErrors( + LoadYAMLInstrMap(Filename, Sleds, FunctionAddresses, FunctionIds), + [&](std::unique_ptr E) { + return joinErrors( + make_error( + Twine("Cannot load YAML instrumentation map from '") + + Filename + "'.", + std::make_error_code(std::errc::wrong_protocol_type)), + std::move(E)); + }); break; } + } } void InstrumentationMapExtractor::exportAsYAML(raw_ostream &OS) { Index: tools/llvm-xray/xray-log-reader.h =================================================================== --- /dev/null +++ tools/llvm-xray/xray-log-reader.h @@ -0,0 +1,57 @@ +//===- xray-log-reader.h - XRay Log Reader Interface ----------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Define the interface for an XRay log reader. Currently we only support one +// version of the log (naive log) with fixed-sized records. +// +//===----------------------------------------------------------------------===// +#ifndef LLVM_TOOLS_LLVM_XRAY_XRAY_LOG_READER_H +#define LLVM_TOOLS_LLVM_XRAY_XRAY_LOG_READER_H + +#include +#include +#include + +#include "xray-record-yaml.h" +#include "xray-record.h" +#include "llvm/Support/Error.h" +#include "llvm/Support/FileSystem.h" + +namespace llvm { +namespace xray { + +class LogReader { + XRayFileHeader FileHeader; + std::vector Records; + + typedef std::vector::const_iterator citerator; + +public: + typedef std::function &)> + LoaderFunction; + + LogReader(StringRef Filename, Error &Err, bool Sort, LoaderFunction Loader); + + const XRayFileHeader &getFileHeader() const { return FileHeader; } + + citerator begin() const { return Records.begin(); } + citerator end() const { return Records.end(); } + size_t size() const { return Records.size(); } +}; + +Error NaiveLogLoader(StringRef Data, XRayFileHeader &FileHeader, + std::vector &Records); +Error YAMLLogLoader(StringRef Data, XRayFileHeader &FileHeader, + std::vector &Records); + +} // namespace xray +} // namespace llvm + +#endif // LLVM_TOOLS_LLVM_XRAY_XRAY_LOG_READER_H Index: tools/llvm-xray/xray-log-reader.cc =================================================================== --- /dev/null +++ tools/llvm-xray/xray-log-reader.cc @@ -0,0 +1,167 @@ +//===- xray-log-reader.cc - XRay Log Reader Implementation ----------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// XRay log reader implementation. +// +//===----------------------------------------------------------------------===// +#include + +#include "xray-log-reader.h" +#include "xray-record-yaml.h" +#include "llvm/Support/DataExtractor.h" +#include "llvm/Support/FileSystem.h" + +using namespace llvm; +using namespace llvm::xray; +using llvm::yaml::Input; + +LogReader::LogReader( + StringRef Filename, Error &Err, bool Sort, + std::function &)> + Loader) { + ErrorAsOutParameter Guard(&Err); + int Fd; + if (auto EC = sys::fs::openFileForRead(Filename, Fd)) { + Err = make_error( + Twine("Cannot read log from '") + Filename + "'", EC); + return; + } + uint64_t FileSize; + if (auto EC = sys::fs::file_size(Filename, FileSize)) { + Err = make_error( + Twine("Cannot read log from '") + Filename + "'", EC); + return; + } + + std::error_code EC; + sys::fs::mapped_file_region MappedFile( + Fd, sys::fs::mapped_file_region::mapmode::readonly, FileSize, 0, EC); + if (EC) { + Err = make_error( + Twine("Cannot read log from '") + Filename + "'", EC); + return; + } + + if (auto E = Loader(StringRef(MappedFile.data(), MappedFile.size()), + FileHeader, Records)) { + Err = std::move(E); + return; + } + + if (Sort) + std::sort( + Records.begin(), Records.end(), + [](const XRayRecord &L, const XRayRecord &R) { return L.TSC < R.TSC; }); +} + +Error llvm::xray::NaiveLogLoader(StringRef Data, XRayFileHeader &FileHeader, + std::vector &Records) { + // FIXME: Maybe deduce whether the data is little or big-endian using some + // magic bytes in the beginning of the file? + + // First 32 bytes of the file will always be the header. We assume a certain + // format here: + // + // (2) uint16 : version + // (2) uint16 : type + // (4) uint32 : bitfield + // (8) uint64 : cycle frequency + // (16) - : padding + // + if (Data.size() < 32) + return make_error( + "Not enough bytes for an XRay log.", + std::make_error_code(std::errc::invalid_argument)); + + if (Data.size() - 32 == 0 || Data.size() % 32 != 0) + return make_error( + "Invalid-sized XRay data.", + std::make_error_code(std::errc::invalid_argument)); + + DataExtractor HeaderExtractor(Data, true, 8); + uint32_t OffsetPtr = 0; + FileHeader.Version = HeaderExtractor.getU16(&OffsetPtr); + FileHeader.Type = HeaderExtractor.getU16(&OffsetPtr); + uint32_t Bitfield = HeaderExtractor.getU32(&OffsetPtr); + FileHeader.ConstantTSC = Bitfield & 1uL; + FileHeader.NonstopTSC = Bitfield & 1uL << 1; + FileHeader.CycleFrequency = HeaderExtractor.getU64(&OffsetPtr); + + if (FileHeader.Version != 1) + return make_error( + Twine("Unsupported XRay file version: ") + Twine(FileHeader.Version), + std::make_error_code(std::errc::invalid_argument)); + + // Each record after the header will be 32 bytes, in the following format: + // + // (2) uint16 : record type + // (1) uint8 : cpu id + // (1) uint8 : type + // (4) sint32 : function id + // (8) uint64 : tsc + // (4) uint32 : thread id + // (4) - : padding + for (auto S = Data.drop_front(32); !S.empty(); S = S.drop_front(32)) { + DataExtractor RecordExtractor(S, true, 8); + uint32_t OffsetPtr = 0; + Records.push_back({}); + auto &Record = Records.back(); + Record.RecordType = RecordExtractor.getU16(&OffsetPtr); + Record.CPU = RecordExtractor.getU8(&OffsetPtr); + auto Type = RecordExtractor.getU8(&OffsetPtr); + switch (Type) { + case 0: + Record.Type = RecordTypes::ENTER; + break; + case 1: + Record.Type = RecordTypes::EXIT; + break; + default: + return make_error( + Twine("Unknown record type '") + Twine(int{Type}) + "'", + std::make_error_code(std::errc::protocol_error)); + } + Record.FuncId = RecordExtractor.getSigned(&OffsetPtr, sizeof(int32_t)); + Record.TSC = RecordExtractor.getU64(&OffsetPtr); + Record.TId = RecordExtractor.getU32(&OffsetPtr); + } + return Error::success(); +} + +Error llvm::xray::YAMLLogLoader(StringRef Data, XRayFileHeader &FileHeader, + std::vector &Records) { + + // Load the documents from the MappedFile. + YAMLXRayTrace Trace; + Input In(Data); + In >> Trace; + if (In.error()) + return make_error("Failed loading YAML Data.", In.error()); + + FileHeader.Version = Trace.Header.Version; + FileHeader.Type = Trace.Header.Type; + FileHeader.ConstantTSC = Trace.Header.ConstantTSC; + FileHeader.NonstopTSC = Trace.Header.NonstopTSC; + FileHeader.CycleFrequency = Trace.Header.CycleFrequency; + + if (FileHeader.Version != 1) + return make_error( + Twine("Unsupported XRay file version: ") + Twine(FileHeader.Version), + std::make_error_code(std::errc::invalid_argument)); + + std::vector Tmp; + Tmp.reserve(Trace.Records.size()); + std::transform(Trace.Records.begin(), Trace.Records.end(), + std::back_inserter(Tmp), [&](const YAMLXRayRecord &R) { + return XRayRecord{R.RecordType, R.CPU, R.Type, + R.FuncId, R.TSC, R.TId}; + }); + Records = std::move(Tmp); + return Error::success(); +} Index: tools/llvm-xray/xray-record-yaml.h =================================================================== --- /dev/null +++ tools/llvm-xray/xray-record-yaml.h @@ -0,0 +1,102 @@ +//===- xray-record-yaml.h - XRay Record YAML Support Definitions ----------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Types and traits specialisations for YAML I/O of XRay log entries. +// +//===----------------------------------------------------------------------===// +#ifndef LLVM_TOOLS_LLVM_XRAY_XRAY_RECORD_YAML_H +#define LLVM_TOOLS_LLVM_XRAY_XRAY_RECORD_YAML_H + +#include + +#include "xray-record.h" +#include "llvm/Support/YAMLTraits.h" + +namespace llvm { +namespace xray { + +struct YAMLXRayFileHeader { + uint16_t Version; + uint16_t Type; + bool ConstantTSC; + bool NonstopTSC; + uint64_t CycleFrequency; +}; + +struct YAMLXRayRecord { + uint16_t RecordType; + uint8_t CPU; + RecordTypes Type; + int32_t FuncId; + std::string Function; + uint64_t TSC; + uint32_t TId; +}; + +struct YAMLXRayTrace { + YAMLXRayFileHeader Header; + std::vector Records; +}; + +using XRayRecordStorage = + std::aligned_storage::type; + +} // namespace xray + +namespace yaml { + +// YAML Traits +// ----------- +template <> struct ScalarEnumerationTraits { + static void enumeration(IO &IO, xray::RecordTypes &Type) { + IO.enumCase(Type, "function-enter", xray::RecordTypes::ENTER); + IO.enumCase(Type, "function-exit", xray::RecordTypes::EXIT); + } +}; + +template <> struct MappingTraits { + static void mapping(IO &IO, xray::YAMLXRayFileHeader &Header) { + IO.mapRequired("version", Header.Version); + IO.mapRequired("type", Header.Type); + IO.mapRequired("constant-tsc", Header.ConstantTSC); + IO.mapRequired("nonstop-tsc", Header.NonstopTSC); + IO.mapRequired("cycle-frequency", Header.CycleFrequency); + } +}; + +template <> struct MappingTraits { + static void mapping(IO &IO, xray::YAMLXRayRecord &Record) { + // FIXME: Make this type actually be descriptive + IO.mapRequired("type", Record.RecordType); + IO.mapRequired("func-id", Record.FuncId); + IO.mapOptional("function", Record.Function); + IO.mapRequired("cpu", Record.CPU); + IO.mapRequired("thread", Record.TId); + IO.mapRequired("kind", Record.Type); + IO.mapRequired("tsc", Record.TSC); + } + + static constexpr bool flow = true; +}; + +template <> struct MappingTraits { + static void mapping(IO &IO, xray::YAMLXRayTrace &Trace) { + // A trace file contains two parts, the header and the list of all the + // trace records. + IO.mapRequired("header", Trace.Header); + IO.mapRequired("records", Trace.Records); + } +}; + +} // namespace yaml +} // namespace llvm + +LLVM_YAML_IS_SEQUENCE_VECTOR(xray::YAMLXRayRecord) + +#endif // LLVM_TOOLS_LLVM_XRAY_XRAY_RECORD_YAML_H Index: tools/llvm-xray/xray-record.h =================================================================== --- /dev/null +++ tools/llvm-xray/xray-record.h @@ -0,0 +1,55 @@ +//===- xray-record.h - XRay Trace Record ----------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file replicates the record definition for XRay log entries. This should +// follow the evolution of the log record versions supported in the compiler-rt +// xray project. +// +//===----------------------------------------------------------------------===// +#ifndef LLVM_TOOLS_LLVM_XRAY_XRAY_RECORD_H +#define LLVM_TOOLS_LLVM_XRAY_XRAY_RECORD_H + +#include + +namespace llvm { +namespace xray { + +struct XRayFileHeader { + uint16_t Version = 0; + uint16_t Type = 0; + bool ConstantTSC; + bool NonstopTSC; + uint64_t CycleFrequency = 0; +}; + +enum class RecordTypes { ENTER, EXIT }; + +struct XRayRecord { + uint16_t RecordType; + + // The CPU where the thread is running. We assume number of CPUs <= 256. + uint8_t CPU; + + // The type of the event. Usually either ENTER = 0 or EXIT = 1. + RecordTypes Type; + + // The function ID for the record. + int32_t FuncId; + + // Get the full 8 bytes of the TSC when we get the log record. + uint64_t TSC; + + // The thread ID for the currently running thread. + uint32_t TId; +}; + +} // namespace xray +} // namespace llvm + +#endif // LLVM_TOOLS_LLVM_XRAY_XRAY_RECORD_H