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📁 ..
📄 DbiModuleDescriptor.h(2.11 KB)
📄 DbiModuleDescriptorBuilder.h(3.13 KB)
📄 DbiModuleList.h(4 KB)
📄 DbiStream.h(4.33 KB)
📄 DbiStreamBuilder.h(4.21 KB)
📄 EnumTables.h(674 B)
📄 Formatters.h(1.77 KB)
📄 GSIStreamBuilder.h(4.71 KB)
📄 GlobalsStream.h(2.89 KB)
📄 Hash.h(785 B)
📄 HashTable.h(10.24 KB)
📄 ISectionContribVisitor.h(865 B)
📄 InfoStream.h(1.94 KB)
📄 InfoStreamBuilder.h(2.11 KB)
📄 InjectedSourceStream.h(1.3 KB)
📄 ModuleDebugStream.h(2.79 KB)
📄 NamedStreamMap.h(1.95 KB)
📄 NativeCompilandSymbol.h(1.24 KB)
📄 NativeEnumGlobals.h(1.18 KB)
📄 NativeEnumInjectedSources.h(1.34 KB)
📄 NativeEnumLineNumbers.h(1.28 KB)
📄 NativeEnumModules.h(1 KB)
📄 NativeEnumTypes.h(1.41 KB)
📄 NativeExeSymbol.h(1.16 KB)
📄 NativeFunctionSymbol.h(1.5 KB)
📄 NativeLineNumber.h(1.77 KB)
📄 NativePublicSymbol.h(1.46 KB)
📄 NativeRawSymbol.h(9.86 KB)
📄 NativeSession.h(5.12 KB)
📄 NativeSourceFile.h(1.33 KB)
📄 NativeSymbolEnumerator.h(1.68 KB)
📄 NativeTypeArray.h(1.41 KB)
📄 NativeTypeBuiltin.h(1.41 KB)
📄 NativeTypeEnum.h(2.56 KB)
📄 NativeTypeFunctionSig.h(2.31 KB)
📄 NativeTypePointer.h(2.08 KB)
📄 NativeTypeTypedef.h(1.29 KB)
📄 NativeTypeUDT.h(2.51 KB)
📄 NativeTypeVTShape.h(1.46 KB)
📄 PDBFile.h(4.4 KB)
📄 PDBFileBuilder.h(3.54 KB)
📄 PDBStringTable.h(1.81 KB)
📄 PDBStringTableBuilder.h(2.06 KB)
📄 PublicsStream.h(1.77 KB)
📄 RawConstants.h(3.03 KB)
📄 RawError.h(1.5 KB)
📄 RawTypes.h(11.91 KB)
📄 SymbolCache.h(6.94 KB)
📄 SymbolStream.h(1.12 KB)
📄 TpiHashing.h(1.93 KB)
📄 TpiStream.h(2.72 KB)
📄 TpiStreamBuilder.h(2.45 KB)

Editing: SymbolCache.h

//==- SymbolCache.h - Cache of native symbols and ids ------------*- C++ -*-==//
//
// 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
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_DEBUGINFO_PDB_NATIVE_SYMBOLCACHE_H
#define LLVM_DEBUGINFO_PDB_NATIVE_SYMBOLCACHE_H

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/IntervalMap.h"
#include "llvm/DebugInfo/CodeView/Line.h"
#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
#include "llvm/DebugInfo/CodeView/TypeDeserializer.h"
#include "llvm/DebugInfo/CodeView/TypeIndex.h"
#include "llvm/DebugInfo/CodeView/TypeRecord.h"
#include "llvm/DebugInfo/PDB/Native/ModuleDebugStream.h"
#include "llvm/DebugInfo/PDB/Native/NativeRawSymbol.h"
#include "llvm/DebugInfo/PDB/Native/NativeSourceFile.h"

#include <memory>
#include <vector>

namespace llvm {
namespace pdb {
class DbiStream;
class PDBFile;

class SymbolCache {
  NativeSession &Session;
  DbiStream *Dbi = nullptr;

/// Cache of all stable symbols, indexed by SymIndexId.  Just because a
  /// symbol has been parsed does not imply that it will be stable and have
  /// an Id.  Id allocation is an implementation, with the only guarantee
  /// being that once an Id is allocated, the symbol can be assumed to be
  /// cached.
  std::vector<std::unique_ptr<NativeRawSymbol>> Cache;

/// For type records from the TPI stream which have been paresd and cached,
  /// stores a mapping to SymIndexId of the cached symbol.
  DenseMap<codeview::TypeIndex, SymIndexId> TypeIndexToSymbolId;

/// For field list members which have been parsed and cached, stores a mapping
  /// from (IndexOfClass, MemberIndex) to the corresponding SymIndexId of the
  /// cached symbol.
  DenseMap<std::pair<codeview::TypeIndex, uint32_t>, SymIndexId>
      FieldListMembersToSymbolId;

/// List of SymIndexIds for each compiland, indexed by compiland index as they
  /// appear in the PDB file.
  std::vector<SymIndexId> Compilands;

/// List of source files, indexed by unique source file index.
  mutable std::vector<std::unique_ptr<NativeSourceFile>> SourceFiles;
  mutable DenseMap<uint32_t, SymIndexId> FileNameOffsetToId;

/// Map from global symbol offset to SymIndexId.
  DenseMap<uint32_t, SymIndexId> GlobalOffsetToSymbolId;

/// Map from segment and code offset to SymIndexId.
  DenseMap<std::pair<uint32_t, uint32_t>, SymIndexId> AddressToFunctionSymId;
  DenseMap<std::pair<uint32_t, uint32_t>, SymIndexId> AddressToPublicSymId;

/// Map from virtual address to module index.
  using IMap =
      IntervalMap<uint64_t, uint16_t, 8, IntervalMapHalfOpenInfo<uint64_t>>;
  IMap::Allocator IMapAllocator;
  IMap AddrToModuleIndex;

Expected<ModuleDebugStreamRef> getModuleDebugStream(uint32_t Index) const;

struct LineTableEntry {
    uint64_t Addr;
    codeview::LineInfo Line;
    uint32_t ColumnNumber;
    uint32_t FileNameIndex;
    bool IsTerminalEntry;
  };

std::vector<LineTableEntry> findLineTable(uint16_t Modi) const;
  mutable DenseMap<uint16_t, std::vector<LineTableEntry>> LineTable;

SymIndexId createSymbolPlaceholder() {
    SymIndexId Id = Cache.size();
    Cache.push_back(nullptr);
    return Id;
  }

template <typename ConcreteSymbolT, typename CVRecordT, typename... Args>
  SymIndexId createSymbolForType(codeview::TypeIndex TI, codeview::CVType CVT,
                                 Args &&... ConstructorArgs) {
    CVRecordT Record;
    if (auto EC =
            codeview::TypeDeserializer::deserializeAs<CVRecordT>(CVT, Record)) {
      consumeError(std::move(EC));
      return 0;
    }

return createSymbol<ConcreteSymbolT>(
        TI, std::move(Record), std::forward<Args>(ConstructorArgs)...);
  }

SymIndexId createSymbolForModifiedType(codeview::TypeIndex ModifierTI,
                                         codeview::CVType CVT);

SymIndexId createSimpleType(codeview::TypeIndex TI,
                              codeview::ModifierOptions Mods);

std::unique_ptr<PDBSymbol> findFunctionSymbolBySectOffset(uint32_t Sect,
                                                            uint32_t Offset);
  std::unique_ptr<PDBSymbol> findPublicSymbolBySectOffset(uint32_t Sect,
                                                          uint32_t Offset);

public:
  SymbolCache(NativeSession &Session, DbiStream *Dbi);

template <typename ConcreteSymbolT, typename... Args>
  SymIndexId createSymbol(Args &&... ConstructorArgs) {
    SymIndexId Id = Cache.size();

// Initial construction must not access the cache, since it must be done
    // atomically.
    auto Result = std::make_unique<ConcreteSymbolT>(
        Session, Id, std::forward<Args>(ConstructorArgs)...);
    Result->SymbolId = Id;

NativeRawSymbol *NRS = static_cast<NativeRawSymbol *>(Result.get());
    Cache.push_back(std::move(Result));

// After the item is in the cache, we can do further initialization which
    // is then allowed to access the cache.
    NRS->initialize();
    return Id;
  }

std::unique_ptr<IPDBEnumSymbols>
  createTypeEnumerator(codeview::TypeLeafKind Kind);

std::unique_ptr<IPDBEnumSymbols>
  createTypeEnumerator(std::vector<codeview::TypeLeafKind> Kinds);

std::unique_ptr<IPDBEnumSymbols>
  createGlobalsEnumerator(codeview::SymbolKind Kind);

SymIndexId findSymbolByTypeIndex(codeview::TypeIndex TI);

template <typename ConcreteSymbolT, typename... Args>
  SymIndexId getOrCreateFieldListMember(codeview::TypeIndex FieldListTI,
                                        uint32_t Index,
                                        Args &&... ConstructorArgs) {
    SymIndexId SymId = Cache.size();
    std::pair<codeview::TypeIndex, uint32_t> Key{FieldListTI, Index};
    auto Result = FieldListMembersToSymbolId.try_emplace(Key, SymId);
    if (Result.second)
      SymId =
          createSymbol<ConcreteSymbolT>(std::forward<Args>(ConstructorArgs)...);
    else
      SymId = Result.first->second;
    return SymId;
  }

SymIndexId getOrCreateGlobalSymbolByOffset(uint32_t Offset);

std::unique_ptr<PDBSymbol>
  findSymbolBySectOffset(uint32_t Sect, uint32_t Offset, PDB_SymType Type);

std::unique_ptr<IPDBEnumLineNumbers>
  findLineNumbersByVA(uint64_t VA, uint32_t Length) const;

std::unique_ptr<PDBSymbolCompiland> getOrCreateCompiland(uint32_t Index);
  uint32_t getNumCompilands() const;

std::unique_ptr<PDBSymbol> getSymbolById(SymIndexId SymbolId) const;

NativeRawSymbol &getNativeSymbolById(SymIndexId SymbolId) const;

template <typename ConcreteT>
  ConcreteT &getNativeSymbolById(SymIndexId SymbolId) const {
    return static_cast<ConcreteT &>(getNativeSymbolById(SymbolId));
  }

std::unique_ptr<IPDBSourceFile> getSourceFileById(SymIndexId FileId) const;
  SymIndexId
  getOrCreateSourceFile(const codeview::FileChecksumEntry &Checksum) const;

void parseSectionContribs();
  Optional<uint16_t> getModuleIndexForAddr(uint64_t Addr) const;
};

} // namespace pdb
} // namespace llvm

#endif

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Editing: SymbolCache.h

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