contrib/llvm/tools/lldb/include/lldb/DataFormatters/FormatCache.h

   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
  23 namespace lldb_private {
  24 class FormatCache
  25 {
  26 private:
  27     struct Entry
  28     {
  29     private:
  30         bool m_summary_cached : 1;
  31         bool m_synthetic_cached : 1;
  32
  33         lldb::TypeSummaryImplSP m_summary_sp;
  34         lldb::SyntheticChildrenSP m_synthetic_sp;
  35     public:
  36         Entry ();
  37         Entry (lldb::TypeSummaryImplSP);
  38         Entry (lldb::SyntheticChildrenSP);
  39         Entry (lldb::TypeSummaryImplSP,lldb::SyntheticChildrenSP);
  40
  41         bool
  42         IsSummaryCached ();
  43
  44         bool
  45         IsSyntheticCached ();
  46
  47         lldb::TypeSummaryImplSP
  48         GetSummary ();
  49
  50         lldb::SyntheticChildrenSP
  51         GetSynthetic ();
  52
  53         void
  54         SetSummary (lldb::TypeSummaryImplSP);
  55
  56         void
  57         SetSynthetic (lldb::SyntheticChildrenSP);
  58     };
  59     typedef std::map<ConstString,Entry> CacheMap;
  60     CacheMap m_map;
  61     Mutex m_mutex;
  62
  63     uint64_t m_cache_hits;
  64     uint64_t m_cache_misses;
  65
  66     Entry&
  67     GetEntry (const ConstString& type);
  68
  69 public:
  70     FormatCache ();
  71
  72     bool
  73     GetSummary (const ConstString& type,lldb::TypeSummaryImplSP& summary_sp);
  74
  75     bool
  76     GetSynthetic (const ConstString& type,lldb::SyntheticChildrenSP& synthetic_sp);
  77
  78     void
  79     SetSummary (const ConstString& type,lldb::TypeSummaryImplSP& summary_sp);
  80
  81     void
  82     SetSynthetic (const ConstString& type,lldb::SyntheticChildrenSP& synthetic_sp);
  83
  84     void
  85     Clear ();
  86
  87     uint64_t
  88     GetCacheHits ()
  89     {
  90         return m_cache_hits;
  91     }
  92
  93     uint64_t
  94     GetCacheMisses ()
  95     {
  96         return m_cache_misses;
  97     }
  98 };
  99 } // namespace lldb_private
 100
 101 #endif  // lldb_FormatCache_h_