41 // * An optional reason string which describes the reason for the
  42 // action.
  43 // * An optional number of name/value pairs which contributed to the
  44 // decision to take the action described in the record.
  45 //
  46 // Each record is associated with a "tag" which is the combination of
  47 // the heuristic the record corresponds to, as well as the min level
  48 // of verboseness at which the record should be printed. The tag is
  49 // checked against the current settings to determine whether the record
  50 // should be printed or not.
  51 
  52 // The available verboseness levels.
  53 typedef enum {
  54   // Determine which part of the tag is occupied by the level.
  55   ErgoLevelShift = 8,
  56   ErgoLevelMask = ~((1 << ErgoLevelShift) - 1),
  57 
  58   // ErgoLow is 0 so that we don't have to explicitly or a heuristic
  59   // id with ErgoLow to keep its use simpler.
  60   ErgoLow = 0,
  61   ErgoHigh = 1 << ErgoLevelShift,
  62 } ErgoLevel;
  63 
  64 // The available heuristics.
  65 typedef enum {
  66   // Determines which part of the tag is occupied by the heuristic id.
  67   ErgoHeuristicMask = ~ErgoLevelMask,
  68 
  69   ErgoHeapSizing = 0,
  70   ErgoCSetConstruction,
  71   ErgoConcCycles,
  72   ErgoPartiallyYoungGCs,
  73 
  74   ErgoHeuristicNum
  75 } ErgoHeuristic;
  76 
  77 class G1ErgoVerbose : AllStatic {
  78 private:
  79   // Determines the minimum verboseness level at which records will be
  80   // printed.
  81   static ErgoLevel _level;

  41 // * An optional reason string which describes the reason for the
  42 // action.
  43 // * An optional number of name/value pairs which contributed to the
  44 // decision to take the action described in the record.
  45 //
  46 // Each record is associated with a "tag" which is the combination of
  47 // the heuristic the record corresponds to, as well as the min level
  48 // of verboseness at which the record should be printed. The tag is
  49 // checked against the current settings to determine whether the record
  50 // should be printed or not.
  51 
  52 // The available verboseness levels.
  53 typedef enum {
  54   // Determine which part of the tag is occupied by the level.
  55   ErgoLevelShift = 8,
  56   ErgoLevelMask = ~((1 << ErgoLevelShift) - 1),
  57 
  58   // ErgoLow is 0 so that we don't have to explicitly or a heuristic
  59   // id with ErgoLow to keep its use simpler.
  60   ErgoLow = 0,
  61   ErgoHigh = 1 << ErgoLevelShift
  62 } ErgoLevel;
  63 
  64 // The available heuristics.
  65 typedef enum {
  66   // Determines which part of the tag is occupied by the heuristic id.
  67   ErgoHeuristicMask = ~ErgoLevelMask,
  68 
  69   ErgoHeapSizing = 0,
  70   ErgoCSetConstruction,
  71   ErgoConcCycles,
  72   ErgoPartiallyYoungGCs,
  73 
  74   ErgoHeuristicNum
  75 } ErgoHeuristic;
  76 
  77 class G1ErgoVerbose : AllStatic {
  78 private:
  79   // Determines the minimum verboseness level at which records will be
  80   // printed.
  81   static ErgoLevel _level;