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src/share/vm/logging/logTagSet.hpp

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rev 10661 : [mq]: 8145934
rev 10662 : imported patch 8145934.alternative


  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 #ifndef SHARE_VM_LOGGING_LOGTAGSET_HPP
  25 #define SHARE_VM_LOGGING_LOGTAGSET_HPP
  26 
  27 #include "logging/logDecorators.hpp"
  28 #include "logging/logLevel.hpp"
  29 #include "logging/logOutputList.hpp"
  30 #include "logging/logTag.hpp"
  31 #include "utilities/globalDefinitions.hpp"
  32 


  33 // The tagset represents a combination of tags that occur in a log call somewhere.
  34 // Tagsets are created automatically by the LogTagSetMappings and should never be
  35 // instantiated directly somewhere else.
  36 class LogTagSet VALUE_OBJ_CLASS_SPEC {
  37  private:
  38   static LogTagSet* _list;
  39   static size_t     _ntagsets;
  40 
  41   LogTagSet* const  _next;
  42   size_t            _ntags;
  43   LogTagType        _tag[LogTag::MaxTags];
  44 
  45   LogOutputList     _output_list;
  46   LogDecorators     _decorators;
  47 
  48   // Keep constructor private to prevent incorrect instantiations of this class.
  49   // Only LogTagSetMappings can create/contain instances of this class.
  50   // The constructor links all tagsets together in a global list of tagsets.
  51   // This list is used during configuration to be able to update all tagsets
  52   // and their configurations to reflect the new global log configuration.


  80     }
  81     return false;
  82   }
  83 
  84   LogLevelType level_for(const LogOutput* output) const {
  85     return _output_list.level_for(output);
  86   }
  87 
  88   void set_output_level(LogOutput* output, LogLevelType level) {
  89     _output_list.set_output_level(output, level);
  90   }
  91 
  92   // Refresh the decorators for this tagset to contain the decorators for all
  93   // of its current outputs combined with the given decorators.
  94   void update_decorators(const LogDecorators& decorator = LogDecorators::None);
  95 
  96   int label(char *buf, size_t len, const char* separator = ",") const;
  97   bool has_output(const LogOutput* output);
  98   bool is_level(LogLevelType level) const;
  99   void log(LogLevelType level, const char* msg);

 100 };
 101 
 102 template <LogTagType T0, LogTagType T1 = LogTag::__NO_TAG, LogTagType T2 = LogTag::__NO_TAG,
 103           LogTagType T3 = LogTag::__NO_TAG, LogTagType T4 = LogTag::__NO_TAG>
 104 class LogTagSetMapping : public AllStatic {
 105 private:
 106   static LogTagSet _tagset;
 107 
 108 public:
 109   static LogTagSet& tagset() {
 110     return _tagset;
 111   }
 112 };
 113 
 114 // Instantiate the static field _tagset for all tagsets that are used for logging somewhere.
 115 // (This must be done here rather than the .cpp file because it's a template.)
 116 // Each combination of tags used as template arguments to the Log class somewhere (via macro or not)
 117 // will instantiate the LogTagSetMapping template, which in turn creates the static field for that
 118 // tagset. This _tagset contains the configuration for those tags.
 119 template <LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4>


  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 #ifndef SHARE_VM_LOGGING_LOGTAGSET_HPP
  25 #define SHARE_VM_LOGGING_LOGTAGSET_HPP
  26 
  27 #include "logging/logDecorators.hpp"
  28 #include "logging/logLevel.hpp"
  29 #include "logging/logOutputList.hpp"
  30 #include "logging/logTag.hpp"
  31 #include "utilities/globalDefinitions.hpp"
  32 
  33 class LogMessageBuffer;
  34 
  35 // The tagset represents a combination of tags that occur in a log call somewhere.
  36 // Tagsets are created automatically by the LogTagSetMappings and should never be
  37 // instantiated directly somewhere else.
  38 class LogTagSet VALUE_OBJ_CLASS_SPEC {
  39  private:
  40   static LogTagSet* _list;
  41   static size_t     _ntagsets;
  42 
  43   LogTagSet* const  _next;
  44   size_t            _ntags;
  45   LogTagType        _tag[LogTag::MaxTags];
  46 
  47   LogOutputList     _output_list;
  48   LogDecorators     _decorators;
  49 
  50   // Keep constructor private to prevent incorrect instantiations of this class.
  51   // Only LogTagSetMappings can create/contain instances of this class.
  52   // The constructor links all tagsets together in a global list of tagsets.
  53   // This list is used during configuration to be able to update all tagsets
  54   // and their configurations to reflect the new global log configuration.


  82     }
  83     return false;
  84   }
  85 
  86   LogLevelType level_for(const LogOutput* output) const {
  87     return _output_list.level_for(output);
  88   }
  89 
  90   void set_output_level(LogOutput* output, LogLevelType level) {
  91     _output_list.set_output_level(output, level);
  92   }
  93 
  94   // Refresh the decorators for this tagset to contain the decorators for all
  95   // of its current outputs combined with the given decorators.
  96   void update_decorators(const LogDecorators& decorator = LogDecorators::None);
  97 
  98   int label(char *buf, size_t len, const char* separator = ",") const;
  99   bool has_output(const LogOutput* output);
 100   bool is_level(LogLevelType level) const;
 101   void log(LogLevelType level, const char* msg);
 102   void log(const LogMessageBuffer& msg);
 103 };
 104 
 105 template <LogTagType T0, LogTagType T1 = LogTag::__NO_TAG, LogTagType T2 = LogTag::__NO_TAG,
 106           LogTagType T3 = LogTag::__NO_TAG, LogTagType T4 = LogTag::__NO_TAG>
 107 class LogTagSetMapping : public AllStatic {
 108 private:
 109   static LogTagSet _tagset;
 110 
 111 public:
 112   static LogTagSet& tagset() {
 113     return _tagset;
 114   }
 115 };
 116 
 117 // Instantiate the static field _tagset for all tagsets that are used for logging somewhere.
 118 // (This must be done here rather than the .cpp file because it's a template.)
 119 // Each combination of tags used as template arguments to the Log class somewhere (via macro or not)
 120 // will instantiate the LogTagSetMapping template, which in turn creates the static field for that
 121 // tagset. This _tagset contains the configuration for those tags.
 122 template <LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4>
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