1 //===-- ClangExternalASTSourceCommon.cpp ------------------------*- 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 #include "lldb/Symbol/ClangExternalASTSourceCommon.h"
11 #include "lldb/Core/Stream.h"
12 
13 using namespace lldb_private;
14 
15 uint64_t g_TotalSizeOfMetadata = 0;
16 
17 typedef llvm::DenseMap<clang::ExternalASTSource *,
18                        ClangExternalASTSourceCommon *>
19     ASTSourceMap;
20 
21 static ASTSourceMap &GetSourceMap() {
22   // Intentionally leaked to avoid problems with global destructors.
23   static ASTSourceMap *s_source_map = new ASTSourceMap;
24   return *s_source_map;
25 }
26 
27 ClangExternalASTSourceCommon *
28 ClangExternalASTSourceCommon::Lookup(clang::ExternalASTSource *source) {
29   ASTSourceMap &source_map = GetSourceMap();
30 
31   ASTSourceMap::iterator iter = source_map.find(source);
32 
33   if (iter != source_map.end()) {
34     return iter->second;
35   } else {
36     return nullptr;
37   }
38 }
39 
40 ClangExternalASTSourceCommon::ClangExternalASTSourceCommon()
41     : clang::ExternalASTSource() {
42   g_TotalSizeOfMetadata += m_metadata.size();
43   GetSourceMap()[this] = this;
44 }
45 
46 ClangExternalASTSourceCommon::~ClangExternalASTSourceCommon() {
47   GetSourceMap().erase(this);
48   g_TotalSizeOfMetadata -= m_metadata.size();
49 }
50 
51 ClangASTMetadata *
52 ClangExternalASTSourceCommon::GetMetadata(const void *object) {
53   if (HasMetadata(object))
54     return &m_metadata[object];
55   else
56     return nullptr;
57 }
58 
59 void ClangExternalASTSourceCommon::SetMetadata(const void *object,
60                                                ClangASTMetadata &metadata) {
61   uint64_t orig_size = m_metadata.size();
62   m_metadata[object] = metadata;
63   uint64_t new_size = m_metadata.size();
64   g_TotalSizeOfMetadata += (new_size - orig_size);
65 }
66 
67 bool ClangExternalASTSourceCommon::HasMetadata(const void *object) {
68   return m_metadata.find(object) != m_metadata.end();
69 }
70 
71 void ClangASTMetadata::Dump(Stream *s) {
72   lldb::user_id_t uid = GetUserID();
73 
74   if (uid != LLDB_INVALID_UID) {
75     s->Printf("uid=0x%" PRIx64, uid);
76   }
77 
78   uint64_t isa_ptr = GetISAPtr();
79   if (isa_ptr != 0) {
80     s->Printf("isa_ptr=0x%" PRIx64, isa_ptr);
81   }
82 
83   const char *obj_ptr_name = GetObjectPtrName();
84   if (obj_ptr_name) {
85     s->Printf("obj_ptr_name=\"%s\" ", obj_ptr_name);
86   }
87 
88   if (m_is_dynamic_cxx) {
89     s->Printf("is_dynamic_cxx=%i ", m_is_dynamic_cxx);
90   }
91   s->EOL();
92 }
93