1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  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_LOGDECORATIONS_HPP
  25 #define SHARE_VM_LOGGING_LOGDECORATIONS_HPP
  26 
  27 #include "logging/logDecorators.hpp"
  28 #include "logging/logTagSet.hpp"
  29 #include "memory/allocation.hpp"
  30 
  31 // Temporary object containing the necessary data for a log call's decorations (timestamps, etc).
  32 class LogDecorations VALUE_OBJ_CLASS_SPEC {
  33  public:
  34   static const int DecorationsBufferSize = 256;
  35  private:
  36   char _decorations_buffer[DecorationsBufferSize];
  37   char* _decoration_offset[LogDecorators::Count];
  38   LogLevelType _level;
  39   LogTagSet _tagset;
  40   jlong _millis;
  41   static jlong _vm_start_time_millis;
  42 
  43   jlong java_millis();
  44   void create_decorations(const LogDecorators& decorators);
  45 
  46 #define DECORATOR(name, abbr) char* create_##name##_decoration(char* pos);
  47   DECORATOR_LIST
  48 #undef DECORATOR
  49 
  50  public:
  51   LogDecorations(LogLevelType level, const LogTagSet& tagset, const LogDecorators& decorators);
  52 
  53   const char* decoration(LogDecorators::Decorator decorator) const {
  54     return _decoration_offset[decorator];
  55   }
  56 
  57   static void set_vm_start_time_millis(jlong start_time) {
  58     _vm_start_time_millis = start_time;
  59   }
  60 };
  61 
  62 #endif // SHARE_VM_LOGGING_LOGDECORATIONS_HPP