154a1a02bf
Use script and some manual fixup to fix directores names in include guards. Reviewed-by: lfoltan, eosterlund, kbarrett
109 lines
4.2 KiB
C++
109 lines
4.2 KiB
C++
/*
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* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_LOGGING_LOGSTREAM_HPP
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#define SHARE_LOGGING_LOGSTREAM_HPP
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#include "logging/log.hpp"
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#include "logging/logHandle.hpp"
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#include "memory/resourceArea.hpp"
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#include "utilities/ostream.hpp"
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class LogStream : public outputStream {
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friend class LogStreamTest_TestLineBufferAllocation_test_vm_Test; // see test/native/logging/test_logStream.cpp
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friend class LogStreamTest_TestLineBufferAllocationCap_test_vm_Test; // see test/native/logging/test_logStream.cpp
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// Helper class, maintains the line buffer. For small line lengths,
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// we avoid malloc and use a fixed sized member char array. If LogStream
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// is allocated on the stack, this means small lines are assembled
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// directly on the stack.
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class LineBuffer {
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char _smallbuf[64];
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char* _buf;
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size_t _cap;
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size_t _pos;
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void try_ensure_cap(size_t cap);
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public:
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LineBuffer();
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~LineBuffer();
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bool is_empty() const { return _pos == 0; }
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const char* buffer() const { return _buf; }
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void append(const char* s, size_t len);
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void reset();
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};
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LineBuffer _current_line;
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LogTargetHandle _log_handle;
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// Prevent operator new for LogStream.
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static void* operator new (size_t);
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static void* operator new[] (size_t);
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public:
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// Constructor to support creation from a LogTarget instance.
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//
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// LogTarget(Debug, gc) log;
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// LogStreamBase(log) stream;
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template <LogLevelType level, LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4, LogTagType GuardTag>
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LogStream(const LogTargetImpl<level, T0, T1, T2, T3, T4, GuardTag>& type_carrier) :
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_log_handle(level, &LogTagSetMapping<T0, T1, T2, T3, T4>::tagset()) {}
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// Constructor to support creation from typed (likely NULL) pointer. Mostly used by the logging framework.
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//
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// LogStreamBase stream(log.debug());
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// or
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// LogStreamBase stream((LogTargetImpl<level, T0, T1, T2, T3, T4, GuardTag>*)NULL);
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template <LogLevelType level, LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4, LogTagType GuardTag>
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LogStream(const LogTargetImpl<level, T0, T1, T2, T3, T4, GuardTag>* type_carrier) :
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_log_handle(level, &LogTagSetMapping<T0, T1, T2, T3, T4>::tagset()) {}
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// Destructor writes any unfinished output left in the line buffer.
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~LogStream();
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// Constructor to support creation from a LogTargetHandle.
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//
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// LogTarget(Debug, gc) log;
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// LogTargetHandle(log) handle;
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// LogStreamBase stream(handle);
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LogStream(LogTargetHandle handle) : _log_handle(handle) {}
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// Constructor to support creation from a log level and tagset.
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//
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// LogStreamBase(level, tageset);
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LogStream(LogLevelType level, LogTagSet* tagset) : _log_handle(level, tagset) {}
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void write(const char* s, size_t len);
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};
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// Support creation of a LogStream without having to provide a LogTarget pointer.
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#define LogStreamHandle(level, ...) LogStreamTemplate<LogLevel::level, LOG_TAGS(__VA_ARGS__)>
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template <LogLevelType level, LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4, LogTagType GuardTag>
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class LogStreamTemplate : public LogStream {
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public:
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LogStreamTemplate() : LogStream((LogTargetImpl<level, T0, T1, T2, T3, T4, GuardTag>*)NULL) {}
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};
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#endif // SHARE_LOGGING_LOGSTREAM_HPP
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