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