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_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 LogTagSet(LogTagType t0, LogTagType t1, LogTagType t2, LogTagType t3, LogTagType t4); 51 52 template <LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4> 53 friend class LogTagSetMapping; 54 55 public: 56 static LogTagSet* first() { 57 return _list; 58 } 59 60 LogTagSet* next() { 61 return _next; 62 } 63 64 size_t ntags() const { 65 return _ntags; 66 } 67 68 bool contains(LogTagType tag) const { 69 for (size_t i = 0; _tag[i] != LogTag::__NO_TAG; i++) { 70 if (tag == _tag[i]) { 71 return true; 72 } 73 } 74 return false; 75 } 76 77 void set_output_level(LogOutput* output, LogLevelType level) { 78 _output_list.set_output_level(output, level); 79 } 80 81 // Refresh the decorators for this tagset to contain the decorators for all 82 // of its current outputs combined with the given decorators. 83 void update_decorators(const LogDecorators& decorator); 84 85 int label(char *buf, size_t len); 86 bool has_output(const LogOutput* output); 87 bool is_level(LogLevelType level); 88 void log(LogLevelType level, const char* msg); 89 }; 90 91 template <LogTagType T0, LogTagType T1 = LogTag::__NO_TAG, LogTagType T2 = LogTag::__NO_TAG, 92 LogTagType T3 = LogTag::__NO_TAG, LogTagType T4 = LogTag::__NO_TAG> 93 class LogTagSetMapping : public AllStatic { 94 private: 95 static LogTagSet _tagset; 96 97 public: 98 static LogTagSet& tagset() { 99 return _tagset; 100 } 101 }; 102 103 // Instantiate the static field _tagset for all tagsets that are used for logging somewhere. 104 // (This must be done here rather than the .cpp file because it's a template.) 105 template <LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4> 106 LogTagSet LogTagSetMapping<T0, T1, T2, T3, T4>::_tagset(T0, T1, T2, T3, T4); 107 108 #endif // SHARE_VM_LOGGING_LOGTAGSET_HPP