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

   1 //===-- FormatCache.h ---------------------------------------------*- C++
   2 //-*-===//
   3 //
   4 //                     The LLVM Compiler Infrastructure
   5 //
   6 // This file is distributed under the University of Illinois Open Source
   7 // License. See LICENSE.TXT for details.
   8 //
   9 //===----------------------------------------------------------------------===//
  10
  11 #ifndef lldb_FormatCache_h_
  12 #define lldb_FormatCache_h_
  13
  14 #include <map>
  15 #include <mutex>
  16
  17 #include "lldb/Utility/ConstString.h"
  18 #include "lldb/lldb-public.h"
  19
  20 namespace lldb_private {
  21 class FormatCache {
  22 private:
  23   struct Entry {
  24   private:
  25     bool m_format_cached : 1;
  26     bool m_summary_cached : 1;
  27     bool m_synthetic_cached : 1;
  28     bool m_validator_cached : 1;
  29
  30     lldb::TypeFormatImplSP m_format_sp;
  31     lldb::TypeSummaryImplSP m_summary_sp;
  32     lldb::SyntheticChildrenSP m_synthetic_sp;
  33     lldb::TypeValidatorImplSP m_validator_sp;
  34
  35   public:
  36     Entry();
  37     Entry(lldb::TypeFormatImplSP);
  38     Entry(lldb::TypeSummaryImplSP);
  39     Entry(lldb::SyntheticChildrenSP);
  40     Entry(lldb::TypeValidatorImplSP);
  41     Entry(lldb::TypeFormatImplSP, lldb::TypeSummaryImplSP,
  42           lldb::SyntheticChildrenSP, lldb::TypeValidatorImplSP);
  43
  44     bool IsFormatCached();
  45
  46     bool IsSummaryCached();
  47
  48     bool IsSyntheticCached();
  49
  50     bool IsValidatorCached();
  51
  52     lldb::TypeFormatImplSP GetFormat();
  53
  54     lldb::TypeSummaryImplSP GetSummary();
  55
  56     lldb::SyntheticChildrenSP GetSynthetic();
  57
  58     lldb::TypeValidatorImplSP GetValidator();
  59
  60     void SetFormat(lldb::TypeFormatImplSP);
  61
  62     void SetSummary(lldb::TypeSummaryImplSP);
  63
  64     void SetSynthetic(lldb::SyntheticChildrenSP);
  65
  66     void SetValidator(lldb::TypeValidatorImplSP);
  67   };
  68   typedef std::map<ConstString, Entry> CacheMap;
  69   CacheMap m_map;
  70   std::recursive_mutex m_mutex;
  71
  72   uint64_t m_cache_hits;
  73   uint64_t m_cache_misses;
  74
  75   Entry &GetEntry(const ConstString &type);
  76
  77 public:
  78   FormatCache();
  79
  80   bool GetFormat(const ConstString &type, lldb::TypeFormatImplSP &format_sp);
  81
  82   bool GetSummary(const ConstString &type, lldb::TypeSummaryImplSP &summary_sp);
  83
  84   bool GetSynthetic(const ConstString &type,
  85                     lldb::SyntheticChildrenSP &synthetic_sp);
  86
  87   bool GetValidator(const ConstString &type,
  88                     lldb::TypeValidatorImplSP &summary_sp);
  89
  90   void SetFormat(const ConstString &type, lldb::TypeFormatImplSP &format_sp);
  91
  92   void SetSummary(const ConstString &type, lldb::TypeSummaryImplSP &summary_sp);
  93
  94   void SetSynthetic(const ConstString &type,
  95                     lldb::SyntheticChildrenSP &synthetic_sp);
  96
  97   void SetValidator(const ConstString &type,
  98                     lldb::TypeValidatorImplSP &synthetic_sp);
  99
 100   void Clear();
 101
 102   uint64_t GetCacheHits() { return m_cache_hits; }
 103
 104   uint64_t GetCacheMisses() { return m_cache_misses; }
 105 };
 106 } // namespace lldb_private
 107
 108 #endif // lldb_FormatCache_h_