FormatCache.h revision 263363 
1//===-- FormatCache.h ---------------------------------------------*- 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 lldb_FormatCache_h_
11#define lldb_FormatCache_h_
12
13// C Includes
14// C++ Includes
15#include <map>
16
17// Other libraries and framework includes
18// Project includes
19#include "lldb/lldb-public.h"
20#include "lldb/Core/ConstString.h"
21#include "lldb/DataFormatters/FormatClasses.h"
22
23namespace lldb_private {
24class FormatCache
25{
26private:
27    struct Entry
28    {
29    private:
30        bool m_format_cached : 1;
31        bool m_summary_cached : 1;
32        bool m_synthetic_cached : 1;
33
34        lldb::TypeFormatImplSP m_format_sp;
35        lldb::TypeSummaryImplSP m_summary_sp;
36        lldb::SyntheticChildrenSP m_synthetic_sp;
37    public:
38        Entry ();
39        Entry (lldb::TypeFormatImplSP);
40        Entry (lldb::TypeSummaryImplSP);
41        Entry (lldb::SyntheticChildrenSP);
42        Entry (lldb::TypeFormatImplSP,lldb::TypeSummaryImplSP,lldb::SyntheticChildrenSP);
43
44        bool
45        IsFormatCached ();
46
47        bool
48        IsSummaryCached ();
49
50        bool
51        IsSyntheticCached ();
52
53        lldb::TypeFormatImplSP
54        GetFormat ();
55
56        lldb::TypeSummaryImplSP
57        GetSummary ();
58
59        lldb::SyntheticChildrenSP
60        GetSynthetic ();
61
62        void
63        SetFormat (lldb::TypeFormatImplSP);
64
65        void
66        SetSummary (lldb::TypeSummaryImplSP);
67
68        void
69        SetSynthetic (lldb::SyntheticChildrenSP);
70    };
71    typedef std::map<ConstString,Entry> CacheMap;
72    CacheMap m_map;
73    Mutex m_mutex;
74
75    uint64_t m_cache_hits;
76    uint64_t m_cache_misses;
77
78    Entry&
79    GetEntry (const ConstString& type);
80
81public:
82    FormatCache ();
83
84    bool
85    GetFormat (const ConstString& type,lldb::TypeFormatImplSP& format_sp);
86
87    bool
88    GetSummary (const ConstString& type,lldb::TypeSummaryImplSP& summary_sp);
89
90    bool
91    GetSynthetic (const ConstString& type,lldb::SyntheticChildrenSP& synthetic_sp);
92
93    void
94    SetFormat (const ConstString& type,lldb::TypeFormatImplSP& format_sp);
95
96    void
97    SetSummary (const ConstString& type,lldb::TypeSummaryImplSP& summary_sp);
98
99    void
100    SetSynthetic (const ConstString& type,lldb::SyntheticChildrenSP& synthetic_sp);
101
102    void
103    Clear ();
104
105    uint64_t
106    GetCacheHits ()
107    {
108        return m_cache_hits;
109    }
110
111    uint64_t
112    GetCacheMisses ()
113    {
114        return m_cache_misses;
115    }
116};
117} // namespace lldb_private
118
119#endif	// lldb_FormatCache_h_
120