26 
  27 #include "logging/logDecorators.hpp"
  28 #include "logging/logLevel.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "utilities/globalDefinitions.hpp"
  31 
  32 class LogDecorations;
  33 class LogTagSet;
  34 
  35 // The base class/interface for log outputs.
  36 // Keeps track of the latest configuration string,
  37 // and its selected decorators.
  38 class LogOutput : public CHeapObj<mtLogging> {
  39   // Make LogConfiguration a friend to allow it to modify the configuration string.
  40   friend class LogConfiguration;
  41 
  42  private:
  43   static const size_t InitialConfigBufferSize = 256;
  44   char* _config_string;
  45   size_t _config_string_buffer_size;

  46 
  47  protected:
  48   LogDecorators _decorators;
  49 
  50   // Clears any previous config description in preparation of reconfiguration.
  51   void clear_config_string();
  52   // Adds the tagset on the given level to the config description (e.g. "tag1+tag2=level").
  53   void add_to_config_string(const LogTagSet* ts, LogLevelType level);
  54   // Replaces the current config description with the given string.
  55   void set_config_string(const char* string);


  56 
  57  public:
  58   static LogOutput* const Stdout;
  59   static LogOutput* const Stderr;
  60 
  61   void set_decorators(const LogDecorators &decorators) {
  62     _decorators = decorators;
  63   }
  64 
  65   const LogDecorators& decorators() const {
  66     return _decorators;
  67   }
  68 
  69   const char* config_string() const {
  70     return _config_string;
  71   }
  72 
  73   LogOutput() : _config_string(NULL), _config_string_buffer_size(0) {




  74   }
  75 
  76   virtual ~LogOutput();
  77 
  78   // If the output can be rotated, trigger a forced rotation, otherwise do nothing.
  79   // Log outputs with rotation capabilities should override this.
  80   virtual void force_rotate() {
  81     // Do nothing by default.
  82   }
  83 
  84   virtual const char* name() const = 0;
  85   virtual bool initialize(const char* options) = 0;
  86   virtual int write(const LogDecorations &decorations, const char* msg) = 0;
  87 };
  88 
  89 #endif // SHARE_VM_LOGGING_LOGOUTPUT_HPP

  26 
  27 #include "logging/logDecorators.hpp"
  28 #include "logging/logLevel.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "utilities/globalDefinitions.hpp"
  31 
  32 class LogDecorations;
  33 class LogTagSet;
  34 
  35 // The base class/interface for log outputs.
  36 // Keeps track of the latest configuration string,
  37 // and its selected decorators.
  38 class LogOutput : public CHeapObj<mtLogging> {
  39   // Make LogConfiguration a friend to allow it to modify the configuration string.
  40   friend class LogConfiguration;
  41 
  42  private:
  43   static const size_t InitialConfigBufferSize = 256;
  44   char* _config_string;
  45   size_t _config_string_buffer_size;
  46   char* _option_string;
  47 
  48  protected:
  49   LogDecorators _decorators;
  50 
  51   // Clears any previous config description in preparation of reconfiguration.
  52   void clear_config_string();
  53   // Adds the tagset on the given level to the config description (e.g. "tag1+tag2=level").
  54   void add_to_config_string(const LogTagSet* ts, LogLevelType level);
  55   // Replaces the current config description with the given string.
  56   void set_config_string(const char* string);
  57   // Replaces the current output option with the given string.
  58   void set_option_string(const char* string);
  59 
  60  public:
  61   static LogOutput* const Stdout;
  62   static LogOutput* const Stderr;
  63 
  64   void set_decorators(const LogDecorators &decorators) {
  65     _decorators = decorators;
  66   }
  67 
  68   const LogDecorators& decorators() const {
  69     return _decorators;
  70   }
  71 
  72   const char* config_string() const {
  73     return _config_string;
  74   }
  75 
  76   const char* option_string() const {
  77     return _option_string;
  78   }
  79 
  80   LogOutput() : _config_string(NULL), _config_string_buffer_size(0), _option_string(NULL) {
  81   }
  82 
  83   virtual ~LogOutput();
  84 
  85   // If the output can be rotated, trigger a forced rotation, otherwise do nothing.
  86   // Log outputs with rotation capabilities should override this.
  87   virtual void force_rotate() {
  88     // Do nothing by default.
  89   }
  90 
  91   virtual const char* name() const = 0;
  92   virtual bool initialize(const char* options) = 0;
  93   virtual int write(const LogDecorations &decorations, const char* msg) = 0;
  94 };
  95 
  96 #endif // SHARE_VM_LOGGING_LOGOUTPUT_HPP