1 //===-- ClangExternalASTSourceCommon.cpp ------------------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 #include "lldb/Symbol/ClangExternalASTSourceCommon.h"
10 #include "lldb/Utility/Stream.h"
14 using namespace lldb_private;
16 uint64_t g_TotalSizeOfMetadata = 0;
18 typedef llvm::DenseMap<clang::ExternalASTSource *,
19 ClangExternalASTSourceCommon *>
22 static ASTSourceMap &GetSourceMap(std::unique_lock<std::mutex> &guard) {
23 // Intentionally leaked to avoid problems with global destructors.
24 static ASTSourceMap *s_source_map = new ASTSourceMap;
25 static std::mutex s_mutex;
26 std::unique_lock<std::mutex> locked_guard(s_mutex);
27 guard.swap(locked_guard);
31 ClangExternalASTSourceCommon *
32 ClangExternalASTSourceCommon::Lookup(clang::ExternalASTSource *source) {
33 std::unique_lock<std::mutex> guard;
34 ASTSourceMap &source_map = GetSourceMap(guard);
36 ASTSourceMap::iterator iter = source_map.find(source);
38 if (iter != source_map.end()) {
45 ClangExternalASTSourceCommon::ClangExternalASTSourceCommon()
46 : clang::ExternalASTSource() {
47 g_TotalSizeOfMetadata += m_metadata.size();
48 std::unique_lock<std::mutex> guard;
49 GetSourceMap(guard)[this] = this;
52 ClangExternalASTSourceCommon::~ClangExternalASTSourceCommon() {
53 std::unique_lock<std::mutex> guard;
54 GetSourceMap(guard).erase(this);
55 g_TotalSizeOfMetadata -= m_metadata.size();
59 ClangExternalASTSourceCommon::GetMetadata(const void *object) {
60 if (HasMetadata(object))
61 return &m_metadata[object];
66 void ClangExternalASTSourceCommon::SetMetadata(const void *object,
67 ClangASTMetadata &metadata) {
68 uint64_t orig_size = m_metadata.size();
69 m_metadata[object] = metadata;
70 uint64_t new_size = m_metadata.size();
71 g_TotalSizeOfMetadata += (new_size - orig_size);
74 bool ClangExternalASTSourceCommon::HasMetadata(const void *object) {
75 return m_metadata.find(object) != m_metadata.end();
78 void ClangASTMetadata::Dump(Stream *s) {
79 lldb::user_id_t uid = GetUserID();
81 if (uid != LLDB_INVALID_UID) {
82 s->Printf("uid=0x%" PRIx64, uid);
85 uint64_t isa_ptr = GetISAPtr();
87 s->Printf("isa_ptr=0x%" PRIx64, isa_ptr);
90 const char *obj_ptr_name = GetObjectPtrName();
92 s->Printf("obj_ptr_name=\"%s\" ", obj_ptr_name);
95 if (m_is_dynamic_cxx) {
96 s->Printf("is_dynamic_cxx=%i ", m_is_dynamic_cxx);