| 1 | //===- NamedStreamMap.h - PDB Named Stream Map ------------------*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #ifndef LLVM_DEBUGINFO_PDB_NATIVE_NAMEDSTREAMMAP_H |
| 10 | #define LLVM_DEBUGINFO_PDB_NATIVE_NAMEDSTREAMMAP_H |
| 11 | |
| 12 | #include "llvm/ADT/StringMap.h" |
| 13 | #include "llvm/ADT/StringRef.h" |
| 14 | #include "llvm/DebugInfo/PDB/Native/HashTable.h" |
| 15 | #include "llvm/Support/Error.h" |
| 16 | #include <cstdint> |
| 17 | |
| 18 | namespace llvm { |
| 19 | |
| 20 | class BinaryStreamReader; |
| 21 | class BinaryStreamWriter; |
| 22 | |
| 23 | namespace pdb { |
| 24 | |
| 25 | class NamedStreamMap; |
| 26 | |
| 27 | struct NamedStreamMapTraits { |
| 28 | NamedStreamMap *NS; |
| 29 | |
| 30 | explicit NamedStreamMapTraits(NamedStreamMap &NS); |
| 31 | uint16_t hashLookupKey(StringRef S) const; |
| 32 | StringRef storageKeyToLookupKey(uint32_t Offset) const; |
| 33 | uint32_t lookupKeyToStorageKey(StringRef S); |
| 34 | }; |
| 35 | |
| 36 | class NamedStreamMap { |
| 37 | friend class NamedStreamMapBuilder; |
| 38 | |
| 39 | public: |
| 40 | NamedStreamMap(); |
| 41 | |
| 42 | Error load(BinaryStreamReader &Stream); |
| 43 | Error commit(BinaryStreamWriter &Writer) const; |
| 44 | uint32_t calculateSerializedLength() const; |
| 45 | |
| 46 | uint32_t size() const; |
| 47 | bool get(StringRef Stream, uint32_t &StreamNo) const; |
| 48 | void set(StringRef Stream, uint32_t StreamNo); |
| 49 | |
| 50 | uint32_t appendStringData(StringRef S); |
| 51 | StringRef getString(uint32_t Offset) const; |
| 52 | uint32_t hashString(uint32_t Offset) const; |
| 53 | |
| 54 | StringMap<uint32_t> entries() const; |
| 55 | |
| 56 | private: |
| 57 | NamedStreamMapTraits HashTraits; |
| 58 | /// Closed hash table from Offset -> StreamNumber, where Offset is the offset |
| 59 | /// of the stream name in NamesBuffer. |
| 60 | HashTable<support::ulittle32_t> OffsetIndexMap; |
| 61 | |
| 62 | /// Buffer of string data. |
| 63 | std::vector<char> NamesBuffer; |
| 64 | }; |
| 65 | |
| 66 | } // end namespace pdb |
| 67 | |
| 68 | } // end namespace llvm |
| 69 | |
| 70 | #endif // LLVM_DEBUGINFO_PDB_NATIVE_NAMEDSTREAMMAP_H |
| 71 |