/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/include/llvm/DebugInfo/PDB/Native/GlobalsStream.h
Line | Count | Source (jump to first uncovered line) |
1 | | //===- GlobalsStream.h - PDB Index of Symbols by Name ------ ----*- C++ -*-===// |
2 | | // |
3 | | // The LLVM Compiler Infrastructure |
4 | | // |
5 | | // This file is distributed under the University of Illinois Open Source |
6 | | // License. See LICENSE.TXT for details. |
7 | | // |
8 | | //===----------------------------------------------------------------------===// |
9 | | |
10 | | #ifndef LLVM_DEBUGINFO_PDB_RAW_GLOBALS_STREAM_H |
11 | | #define LLVM_DEBUGINFO_PDB_RAW_GLOBALS_STREAM_H |
12 | | |
13 | | #include "llvm/DebugInfo/MSF/MappedBlockStream.h" |
14 | | #include "llvm/DebugInfo/PDB/Native/RawConstants.h" |
15 | | #include "llvm/DebugInfo/PDB/Native/RawTypes.h" |
16 | | #include "llvm/DebugInfo/PDB/PDBTypes.h" |
17 | | #include "llvm/Support/BinaryStreamArray.h" |
18 | | #include "llvm/Support/Error.h" |
19 | | #include "llvm/ADT/iterator.h" |
20 | | |
21 | | namespace llvm { |
22 | | namespace pdb { |
23 | | class DbiStream; |
24 | | class PDBFile; |
25 | | |
26 | | /// Iterator over hash records producing symbol record offsets. Abstracts away |
27 | | /// the fact that symbol record offsets on disk are off-by-one. |
28 | | class GSIHashIterator |
29 | | : public iterator_adaptor_base< |
30 | | GSIHashIterator, FixedStreamArrayIterator<PSHashRecord>, |
31 | | std::random_access_iterator_tag, const uint32_t> { |
32 | | public: |
33 | | GSIHashIterator() = default; |
34 | | |
35 | | template <typename T> |
36 | | GSIHashIterator(T &&v) |
37 | | : GSIHashIterator::iterator_adaptor_base(std::forward<T &&>(v)) {} |
38 | | |
39 | 0 | uint32_t operator*() const { |
40 | 0 | uint32_t Off = this->I->Off; |
41 | 0 | return --Off; |
42 | 0 | } |
43 | | }; |
44 | | |
45 | | /// From https://github.com/Microsoft/microsoft-pdb/blob/master/PDB/dbi/gsi.cpp |
46 | | enum : unsigned { IPHR_HASH = 4096 }; |
47 | | |
48 | | /// A readonly view of a hash table used in the globals and publics streams. |
49 | | /// Most clients will only want to iterate this to get symbol record offsets |
50 | | /// into the PDB symbol stream. |
51 | | class GSIHashTable { |
52 | | public: |
53 | | const GSIHashHeader *HashHdr; |
54 | | FixedStreamArray<PSHashRecord> HashRecords; |
55 | | ArrayRef<uint8_t> HashBitmap; |
56 | | FixedStreamArray<support::ulittle32_t> HashBuckets; |
57 | | |
58 | | Error read(BinaryStreamReader &Reader); |
59 | | |
60 | 0 | uint32_t getVerSignature() const { return HashHdr->VerSignature; } |
61 | 0 | uint32_t getVerHeader() const { return HashHdr->VerHdr; } |
62 | 0 | uint32_t getHashRecordSize() const { return HashHdr->HrSize; } |
63 | 0 | uint32_t getNumBuckets() const { return HashHdr->NumBuckets; } |
64 | | |
65 | | typedef GSIHashHeader iterator; |
66 | 0 | GSIHashIterator begin() const { return GSIHashIterator(HashRecords.begin()); } |
67 | 0 | GSIHashIterator end() const { return GSIHashIterator(HashRecords.end()); } |
68 | | }; |
69 | | |
70 | | class GlobalsStream { |
71 | | public: |
72 | | explicit GlobalsStream(std::unique_ptr<msf::MappedBlockStream> Stream); |
73 | | ~GlobalsStream(); |
74 | 0 | const GSIHashTable &getGlobalsTable() const { return GlobalsTable; } |
75 | | Error reload(); |
76 | | |
77 | | private: |
78 | | GSIHashTable GlobalsTable; |
79 | | std::unique_ptr<msf::MappedBlockStream> Stream; |
80 | | }; |
81 | | } |
82 | | } |
83 | | |
84 | | #endif |