1//===-- CFBasicHash.h -------------------------------------------*- 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 LLDB_SOURCE_PLUGINS_LANGUAGE_OBJC_CFBASICHASH_H
10#define LLDB_SOURCE_PLUGINS_LANGUAGE_OBJC_CFBASICHASH_H
11
12#include "lldb/Target/Process.h"
13#include "lldb/Target/Target.h"
14
15namespace lldb_private {
16
17class CFBasicHash {
18public:
19 enum class HashType { set = 0, dict };
20
21 CFBasicHash() = default;
22 ~CFBasicHash() = default;
23
24 bool Update(lldb::addr_t addr, ExecutionContextRef exe_ctx_rf);
25
26 bool IsValid() const;
27
28 bool IsMutable() const { return m_mutable; };
29 bool IsMultiVariant() const { return m_multi; }
30 HashType GetType() const { return m_type; }
31
32 size_t GetCount() const;
33 lldb::addr_t GetKeyPointer() const;
34 lldb::addr_t GetValuePointer() const;
35
36private:
37 template <typename T> struct __CFBasicHash {
38 struct RuntimeBase {
39 T cfisa;
40 T cfinfoa;
41 } base;
42
43 struct Bits {
44 uint16_t __reserved0;
45 uint16_t __reserved1 : 2;
46 uint16_t keys_offset : 1;
47 uint16_t counts_offset : 2;
48 uint16_t counts_width : 2;
49 uint16_t __reserved2 : 9;
50 uint32_t used_buckets; // number of used buckets
51 uint64_t deleted : 16; // number of elements deleted
52 uint64_t num_buckets_idx : 8; // index to number of buckets
53 uint64_t __reserved3 : 40;
54 uint64_t __reserved4;
55 } bits;
56
57 T pointers[3];
58 };
59 template <typename T> bool UpdateFor(std::unique_ptr<__CFBasicHash<T>> &m_ht);
60
61 size_t GetPointerCount() const;
62
63 uint32_t m_ptr_size = UINT32_MAX;
64 lldb::ByteOrder m_byte_order = lldb::eByteOrderInvalid;
65 Address m_address = LLDB_INVALID_ADDRESS;
66 std::unique_ptr<__CFBasicHash<uint32_t>> m_ht_32 = nullptr;
67 std::unique_ptr<__CFBasicHash<uint64_t>> m_ht_64 = nullptr;
68 ExecutionContextRef m_exe_ctx_ref;
69 bool m_mutable = true;
70 bool m_multi = false;
71 HashType m_type = HashType::set;
72};
73
74} // namespace lldb_private
75
76#endif // LLDB_SOURCE_PLUGINS_LANGUAGE_OBJC_CFBASICHASH_H
77

source code of lldb/source/Plugins/Language/ObjC/CFBasicHash.h