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/Host/Mutex.h"
22 #include "lldb/DataFormatters/FormatClasses.h"
23 
24 namespace lldb_private {
25 class FormatCache
26 {
27 private:
28     struct Entry
29     {
30     private:
31         bool m_format_cached : 1;
32         bool m_summary_cached : 1;
33         bool m_synthetic_cached : 1;
34 
35         lldb::TypeFormatImplSP m_format_sp;
36         lldb::TypeSummaryImplSP m_summary_sp;
37         lldb::SyntheticChildrenSP m_synthetic_sp;
38     public:
39         Entry ();
40         Entry (lldb::TypeFormatImplSP);
41         Entry (lldb::TypeSummaryImplSP);
42         Entry (lldb::SyntheticChildrenSP);
43         Entry (lldb::TypeFormatImplSP,lldb::TypeSummaryImplSP,lldb::SyntheticChildrenSP);
44 
45         bool
46         IsFormatCached ();
47 
48         bool
49         IsSummaryCached ();
50 
51         bool
52         IsSyntheticCached ();
53 
54         lldb::TypeFormatImplSP
55         GetFormat ();
56 
57         lldb::TypeSummaryImplSP
58         GetSummary ();
59 
60         lldb::SyntheticChildrenSP
61         GetSynthetic ();
62 
63         void
64         SetFormat (lldb::TypeFormatImplSP);
65 
66         void
67         SetSummary (lldb::TypeSummaryImplSP);
68 
69         void
70         SetSynthetic (lldb::SyntheticChildrenSP);
71     };
72     typedef std::map<ConstString,Entry> CacheMap;
73     CacheMap m_map;
74     Mutex m_mutex;
75 
76     uint64_t m_cache_hits;
77     uint64_t m_cache_misses;
78 
79     Entry&
80     GetEntry (const ConstString& type);
81 
82 public:
83     FormatCache ();
84 
85     bool
86     GetFormat (const ConstString& type,lldb::TypeFormatImplSP& format_sp);
87 
88     bool
89     GetSummary (const ConstString& type,lldb::TypeSummaryImplSP& summary_sp);
90 
91     bool
92     GetSynthetic (const ConstString& type,lldb::SyntheticChildrenSP& synthetic_sp);
93 
94     void
95     SetFormat (const ConstString& type,lldb::TypeFormatImplSP& format_sp);
96 
97     void
98     SetSummary (const ConstString& type,lldb::TypeSummaryImplSP& summary_sp);
99 
100     void
101     SetSynthetic (const ConstString& type,lldb::SyntheticChildrenSP& synthetic_sp);
102 
103     void
104     Clear ();
105 
106     uint64_t
GetCacheHits()107     GetCacheHits ()
108     {
109         return m_cache_hits;
110     }
111 
112     uint64_t
GetCacheMisses()113     GetCacheMisses ()
114     {
115         return m_cache_misses;
116     }
117 };
118 } // namespace lldb_private
119 
120 #endif	// lldb_FormatCache_h_
121