| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| #ifndef SHARE_VM_LOGGING_LOGOUTPUT_HPP |
| #define SHARE_VM_LOGGING_LOGOUTPUT_HPP |
| |
| #include "logging/logDecorators.hpp" |
| #include "logging/logLevel.hpp" |
| #include "memory/allocation.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| |
| class LogDecorations; |
| class LogTagSet; |
| |
| // The base class/interface for log outputs. |
| // Keeps track of the latest configuration string, |
| // and its selected decorators. |
| class LogOutput : public CHeapObj<mtLogging> { |
| // Make LogConfiguration a friend to allow it to modify the configuration string. |
| friend class LogConfiguration; |
| |
| private: |
| static const size_t InitialConfigBufferSize = 256; |
| char* _config_string; |
| size_t _config_string_buffer_size; |
| |
| protected: |
| LogDecorators _decorators; |
| |
| // Clears any previous config description in preparation of reconfiguration. |
| void clear_config_string(); |
| // Adds the tagset on the given level to the config description (e.g. "tag1+tag2=level"). |
| void add_to_config_string(const LogTagSet* ts, LogLevelType level); |
| // Replaces the current config description with the given string. |
| void set_config_string(const char* string); |
| |
| public: |
| static LogOutput* const Stdout; |
| static LogOutput* const Stderr; |
| |
| void set_decorators(const LogDecorators &decorators) { |
| _decorators = decorators; |
| } |
| |
| const LogDecorators& decorators() const { |
| return _decorators; |
| } |
| |
| const char* config_string() const { |
| return _config_string; |
| } |
| |
| LogOutput() : _config_string(NULL), _config_string_buffer_size(0) { |
| } |
| |
| virtual ~LogOutput(); |
| |
| // If the output can be rotated, trigger a forced rotation, otherwise do nothing. |
| // Log outputs with rotation capabilities should override this. |
| virtual void force_rotate() { |
| // Do nothing by default. |
| } |
| |
| virtual const char* name() const = 0; |
| virtual bool initialize(const char* options) = 0; |
| virtual int write(const LogDecorations &decorations, const char* msg) = 0; |
| }; |
| |
| #endif // SHARE_VM_LOGGING_LOGOUTPUT_HPP |