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Summary: The file type packs function trace data onto disk from potentially multiple threads that are aggregated and flushed during the course of an instrumented program's runtime. It is named FDR mode or Flight Data recorder as an analogy to plane blackboxes, which instrument a running system without access to IO. The writer code is defined in compiler-rt in xray_fdr_logging.h/cc Reviewers: rSerge, kcc, dberris Reviewed By: dberris Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D29697 llvm-svn: 295397
100 lines
2.7 KiB
C++
100 lines
2.7 KiB
C++
//===- YAMLXRayRecord.h - XRay Record YAML Support Definitions ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Types and traits specialisations for YAML I/O of XRay log entries.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_XRAY_YAML_XRAY_RECORD_H
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#define LLVM_XRAY_YAML_XRAY_RECORD_H
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#include <type_traits>
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#include "llvm/Support/YAMLTraits.h"
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#include "llvm/XRay/XRayRecord.h"
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namespace llvm {
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namespace xray {
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struct YAMLXRayFileHeader {
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uint16_t Version;
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uint16_t Type;
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bool ConstantTSC;
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bool NonstopTSC;
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uint64_t CycleFrequency;
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};
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struct YAMLXRayRecord {
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uint16_t RecordType;
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uint16_t CPU;
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RecordTypes Type;
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int32_t FuncId;
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std::string Function;
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uint64_t TSC;
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uint32_t TId;
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};
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struct YAMLXRayTrace {
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YAMLXRayFileHeader Header;
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std::vector<YAMLXRayRecord> Records;
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};
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} // namespace xray
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namespace yaml {
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// YAML Traits
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// -----------
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template <> struct ScalarEnumerationTraits<xray::RecordTypes> {
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static void enumeration(IO &IO, xray::RecordTypes &Type) {
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IO.enumCase(Type, "function-enter", xray::RecordTypes::ENTER);
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IO.enumCase(Type, "function-exit", xray::RecordTypes::EXIT);
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}
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};
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template <> struct MappingTraits<xray::YAMLXRayFileHeader> {
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static void mapping(IO &IO, xray::YAMLXRayFileHeader &Header) {
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IO.mapRequired("version", Header.Version);
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IO.mapRequired("type", Header.Type);
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IO.mapRequired("constant-tsc", Header.ConstantTSC);
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IO.mapRequired("nonstop-tsc", Header.NonstopTSC);
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IO.mapRequired("cycle-frequency", Header.CycleFrequency);
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}
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};
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template <> struct MappingTraits<xray::YAMLXRayRecord> {
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static void mapping(IO &IO, xray::YAMLXRayRecord &Record) {
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// FIXME: Make this type actually be descriptive
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IO.mapRequired("type", Record.RecordType);
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IO.mapRequired("func-id", Record.FuncId);
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IO.mapOptional("function", Record.Function);
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IO.mapRequired("cpu", Record.CPU);
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IO.mapRequired("thread", Record.TId);
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IO.mapRequired("kind", Record.Type);
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IO.mapRequired("tsc", Record.TSC);
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}
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static constexpr bool flow = true;
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};
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template <> struct MappingTraits<xray::YAMLXRayTrace> {
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static void mapping(IO &IO, xray::YAMLXRayTrace &Trace) {
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// A trace file contains two parts, the header and the list of all the
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// trace records.
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IO.mapRequired("header", Trace.Header);
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IO.mapRequired("records", Trace.Records);
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}
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};
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} // namespace yaml
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} // namespace llvm
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LLVM_YAML_IS_SEQUENCE_VECTOR(xray::YAMLXRayRecord)
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#endif // LLVM_XRAY_YAML_XRAY_RECORD_H
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