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src/share/vm/logging/logTagSet.hpp

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rev 10178 : imported patch 8145934
rev 10179 : [mq]: 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.


  76     }
  77     return false;
  78   }
  79 
  80   LogLevelType level_for(const LogOutput* output) const {
  81     return _output_list.level_for(output);
  82   }
  83 
  84   void set_output_level(LogOutput* output, LogLevelType level) {
  85     _output_list.set_output_level(output, level);
  86   }
  87 
  88   // Refresh the decorators for this tagset to contain the decorators for all
  89   // of its current outputs combined with the given decorators.
  90   void update_decorators(const LogDecorators& decorator = LogDecorators::None);
  91 
  92   int label(char *buf, size_t len, const char* separator = ",") const;
  93   bool has_output(const LogOutput* output);
  94   bool is_level(LogLevelType level) const;
  95   void log(LogLevelType level, const char* msg);

  96 };
  97 
  98 template <LogTagType T0, LogTagType T1 = LogTag::__NO_TAG, LogTagType T2 = LogTag::__NO_TAG,
  99           LogTagType T3 = LogTag::__NO_TAG, LogTagType T4 = LogTag::__NO_TAG>
 100 class LogTagSetMapping : public AllStatic {
 101 private:
 102   static LogTagSet _tagset;
 103 
 104 public:
 105   static LogTagSet& tagset() {
 106     return _tagset;
 107   }
 108 };
 109 
 110 // Instantiate the static field _tagset for all tagsets that are used for logging somewhere.
 111 // (This must be done here rather than the .cpp file because it's a template.)
 112 // Each combination of tags used as template arguments to the Log class somewhere (via macro or not)
 113 // will instantiate the LogTagSetMapping template, which in turn creates the static field for that
 114 // tagset. This _tagset contains the configuration for those tags.
 115 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.


  78     }
  79     return false;
  80   }
  81 
  82   LogLevelType level_for(const LogOutput* output) const {
  83     return _output_list.level_for(output);
  84   }
  85 
  86   void set_output_level(LogOutput* output, LogLevelType level) {
  87     _output_list.set_output_level(output, level);
  88   }
  89 
  90   // Refresh the decorators for this tagset to contain the decorators for all
  91   // of its current outputs combined with the given decorators.
  92   void update_decorators(const LogDecorators& decorator = LogDecorators::None);
  93 
  94   int label(char *buf, size_t len, const char* separator = ",") const;
  95   bool has_output(const LogOutput* output);
  96   bool is_level(LogLevelType level) const;
  97   void log(LogLevelType level, const char* msg);
  98   void log(const LogMessageBuffer& msg);
  99 };
 100 
 101 template <LogTagType T0, LogTagType T1 = LogTag::__NO_TAG, LogTagType T2 = LogTag::__NO_TAG,
 102           LogTagType T3 = LogTag::__NO_TAG, LogTagType T4 = LogTag::__NO_TAG>
 103 class LogTagSetMapping : public AllStatic {
 104 private:
 105   static LogTagSet _tagset;
 106 
 107 public:
 108   static LogTagSet& tagset() {
 109     return _tagset;
 110   }
 111 };
 112 
 113 // Instantiate the static field _tagset for all tagsets that are used for logging somewhere.
 114 // (This must be done here rather than the .cpp file because it's a template.)
 115 // Each combination of tags used as template arguments to the Log class somewhere (via macro or not)
 116 // will instantiate the LogTagSetMapping template, which in turn creates the static field for that
 117 // tagset. This _tagset contains the configuration for those tags.
 118 template <LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4>
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