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 #include "logging/logDecorators.hpp" 27 #include "logging/logLevel.hpp" 28 #include "logging/logOutputList.hpp" 29 #include "logging/logTag.hpp" 30 #include "utilities/globalDefinitions.hpp" 31 32 // The tagset represents a combination of tags that occur in a log call somewhere. 33 // Tagsets are created automatically by the LogTagSetMappings and should never be 34 // instantiated directly somewhere else. 35 class LogTagSet { 36 private: 37 static LogTagSet* _list; 38 static size_t _ntagsets; 39 40 LogTagSet* const _next; 41 size_t _ntags; 42 LogTagType _tag[LogTag::MaxTags]; 43 44 LogOutputList _output_list; 45 LogDecorators _decorators; 46 47 // Keep constructor private to prevent incorrect instantiations of this class. 48 // Only LogTagSetMappings can create/contain instances of this class. 49 LogTagSet(LogTagType t0, LogTagType t1, LogTagType t2, LogTagType t3, LogTagType t4); 50 51 template <LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4> 52 friend class LogTagSetMapping; 53 54 public: 55 static LogTagSet* first() { 56 return _list; 57 } 58 59 LogTagSet* next() { 60 return _next; 61 } 62 63 size_t ntags() const { 64 return _ntags; 65 } 66 67 bool contains(LogTagType tag) const { 68 for (size_t i = 0; _tag[i] != LogTag::__NO_TAG; i++) { 69 if (tag == _tag[i]) { 70 return true; 71 } 72 } 73 return false; 74 } 75 76 void set_output_level(LogOutput* output, LogLevelType level) { 77 _output_list.set_output_level(output, level); 78 } 79 80 // Refresh the decorators for this tagset to contain the decorators for all 81 // of its current outputs combined with the given decorators. 82 void update_decorators(const LogDecorators& decorator); 83 84 int label(char *buf, size_t len); 85 bool has_output(const LogOutput* output); 86 bool is_level(LogLevelType level); 87 void log(LogLevelType level, const char* msg); 88 }; 89 90 template <LogTagType T0, LogTagType T1 = LogTag::__NO_TAG, LogTagType T2 = LogTag::__NO_TAG, LogTagType T3 = LogTag::__NO_TAG, LogTagType T4 = LogTag::__NO_TAG> 91 class LogTagSetMapping { 92 private: 93 static LogTagSet _tagset; 94 95 public: 96 static LogTagSet& tagset() { 97 return _tagset; 98 } 99 }; 100 101 template <LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4> 102 LogTagSet LogTagSetMapping<T0, T1, T2, T3, T4>::_tagset(T0, T1, T2, T3, T4); 103 104 #endif