1 //===-- ReproducerInstrumentation.cpp ---------------------------*- 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 #include "lldb/Utility/ReproducerInstrumentation.h"
10 #include "lldb/Utility/Reproducer.h"
11
12 using namespace lldb_private;
13 using namespace lldb_private::repro;
14
GetObjectForIndexImpl(unsigned idx)15 void *IndexToObject::GetObjectForIndexImpl(unsigned idx) {
16 return m_mapping.lookup(idx);
17 }
18
AddObjectForIndexImpl(unsigned idx,void * object)19 void IndexToObject::AddObjectForIndexImpl(unsigned idx, void *object) {
20 assert(idx != 0 && "Cannot add object for sentinel");
21 m_mapping[idx] = object;
22 }
23
Deserialize()24 template <> char *Deserializer::Deserialize<char *>() {
25 return const_cast<char *>(Deserialize<const char *>());
26 }
27
Deserialize()28 template <> const char *Deserializer::Deserialize<const char *>() {
29 auto pos = m_buffer.find('\0');
30 if (pos == llvm::StringRef::npos)
31 return nullptr;
32 const char *str = m_buffer.data();
33 m_buffer = m_buffer.drop_front(pos + 1);
34 return str;
35 }
36
Replay(const FileSpec & file)37 bool Registry::Replay(const FileSpec &file) {
38 auto error_or_file = llvm::MemoryBuffer::getFile(file.GetPath());
39 if (auto err = error_or_file.getError())
40 return false;
41
42 return Replay((*error_or_file)->getBuffer());
43 }
44
Replay(llvm::StringRef buffer)45 bool Registry::Replay(llvm::StringRef buffer) {
46 #ifndef LLDB_REPRO_INSTR_TRACE
47 Log *log = GetLogIfAllCategoriesSet(LIBLLDB_LOG_API);
48 #endif
49
50 Deserializer deserializer(buffer);
51 while (deserializer.HasData(1)) {
52 unsigned id = deserializer.Deserialize<unsigned>();
53
54 #ifndef LLDB_REPRO_INSTR_TRACE
55 LLDB_LOG(log, "Replaying {0}: {1}", id, GetSignature(id));
56 #else
57 llvm::errs() << "Replaying " << id << ": " << GetSignature(id) << "\n";
58 #endif
59
60 GetReplayer(id)->operator()(deserializer);
61 }
62
63 return true;
64 }
65
DoRegister(uintptr_t RunID,std::unique_ptr<Replayer> replayer,SignatureStr signature)66 void Registry::DoRegister(uintptr_t RunID, std::unique_ptr<Replayer> replayer,
67 SignatureStr signature) {
68 const unsigned id = m_replayers.size() + 1;
69 assert(m_replayers.find(RunID) == m_replayers.end());
70 m_replayers[RunID] = std::make_pair(std::move(replayer), id);
71 m_ids[id] =
72 std::make_pair(m_replayers[RunID].first.get(), std::move(signature));
73 }
74
GetID(uintptr_t addr)75 unsigned Registry::GetID(uintptr_t addr) {
76 unsigned id = m_replayers[addr].second;
77 assert(id != 0 && "Forgot to add function to registry?");
78 return id;
79 }
80
GetSignature(unsigned id)81 std::string Registry::GetSignature(unsigned id) {
82 assert(m_ids.count(id) != 0 && "ID not in registry");
83 return m_ids[id].second.ToString();
84 }
85
GetReplayer(unsigned id)86 Replayer *Registry::GetReplayer(unsigned id) {
87 assert(m_ids.count(id) != 0 && "ID not in registry");
88 return m_ids[id].first;
89 }
90
ToString() const91 std::string Registry::SignatureStr::ToString() const {
92 return (result + (result.empty() ? "" : " ") + scope + "::" + name + args)
93 .str();
94 }
95
GetIndexForObjectImpl(const void * object)96 unsigned ObjectToIndex::GetIndexForObjectImpl(const void *object) {
97 unsigned index = m_mapping.size() + 1;
98 auto it = m_mapping.find(object);
99 if (it == m_mapping.end())
100 m_mapping[object] = index;
101 return m_mapping[object];
102 }
103
Recorder(llvm::StringRef pretty_func,std::string && pretty_args)104 Recorder::Recorder(llvm::StringRef pretty_func, std::string &&pretty_args)
105 : m_serializer(nullptr), m_pretty_func(pretty_func),
106 m_pretty_args(pretty_args), m_local_boundary(false),
107 m_result_recorded(true) {
108 if (!g_global_boundary) {
109 g_global_boundary = true;
110 m_local_boundary = true;
111
112 LLDB_LOG(GetLogIfAllCategoriesSet(LIBLLDB_LOG_API), "{0} ({1})",
113 m_pretty_func, m_pretty_args);
114 }
115 }
116
~Recorder()117 Recorder::~Recorder() {
118 assert(m_result_recorded && "Did you forget LLDB_RECORD_RESULT?");
119 UpdateBoundary();
120 }
121
122 bool lldb_private::repro::Recorder::g_global_boundary;
123