author | kbarrett |
Tue, 27 Feb 2018 18:17:57 -0500 | |
changeset 49177 | eebf559c9e0d |
parent 47765 | b7c7428eaab9 |
child 49180 | 9637557def32 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2018, 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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#include "precompiled.hpp" |
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#include "jvm.h" |
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#include "logging/logDecorations.hpp" |
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#include "logging/logFileStreamOutput.hpp" |
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#include "logging/logLevel.hpp" |
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#include "logging/logMessageBuffer.hpp" |
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#include "logging/logOutput.hpp" |
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#include "logging/logTag.hpp" |
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#include "logging/logTagSet.hpp" |
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#include "logging/logTagSetDescriptions.hpp" |
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#include "memory/allocation.inline.hpp" |
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#include "utilities/ostream.hpp" |
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LogTagSet* LogTagSet::_list = NULL; |
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size_t LogTagSet::_ntagsets = 0; |
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// This constructor is called only during static initialization. |
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// See the declaration in logTagSet.hpp for more information. |
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LogTagSet::LogTagSet(PrefixWriter prefix_writer, LogTagType t0, LogTagType t1, LogTagType t2, LogTagType t3, LogTagType t4) |
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: _next(_list), _write_prefix(prefix_writer) { |
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_tag[0] = t0; |
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_tag[1] = t1; |
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_tag[2] = t2; |
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_tag[3] = t3; |
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_tag[4] = t4; |
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for (_ntags = 0; _ntags < LogTag::MaxTags && _tag[_ntags] != LogTag::__NO_TAG; _ntags++) { |
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} |
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_list = this; |
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_ntagsets++; |
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// Set the default output to warning and error level for all new tagsets. |
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_output_list.set_output_level(&StdoutLog, LogLevel::Default); |
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} |
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void LogTagSet::update_decorators(const LogDecorators& decorator) { |
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LogDecorators new_decorators = decorator; |
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for (LogOutputList::Iterator it = _output_list.iterator(); it != _output_list.end(); it++) { |
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new_decorators.combine_with((*it)->decorators()); |
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} |
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_decorators = new_decorators; |
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} |
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bool LogTagSet::has_output(const LogOutput* output) { |
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for (LogOutputList::Iterator it = _output_list.iterator(); it != _output_list.end(); it++) { |
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if (*it == output) { |
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return true; |
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} |
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} |
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return false; |
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} |
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void LogTagSet::log(LogLevelType level, const char* msg) { |
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LogDecorations decorations(level, *this, _decorators); |
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for (LogOutputList::Iterator it = _output_list.iterator(level); it != _output_list.end(); it++) { |
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(*it)->write(decorations, msg); |
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} |
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} |
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void LogTagSet::log(const LogMessageBuffer& msg) { |
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LogDecorations decorations(LogLevel::Invalid, *this, _decorators); |
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for (LogOutputList::Iterator it = _output_list.iterator(msg.least_detailed_level()); it != _output_list.end(); it++) { |
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(*it)->write(msg.iterator(it.level(), decorations)); |
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} |
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} |
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int LogTagSet::label(char* buf, size_t len, const char* separator) const { |
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int tot_written = 0; |
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for (size_t i = 0; i < _ntags; i++) { |
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int written = jio_snprintf(buf + tot_written, len - tot_written, "%s%s", |
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(i == 0 ? "" : separator), |
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LogTag::name(_tag[i])); |
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if (written < 0) { |
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return -1; |
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} |
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tot_written += written; |
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} |
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return tot_written; |
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} |
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void LogTagSet::write(LogLevelType level, const char* fmt, ...) { |
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va_list args; |
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va_start(args, fmt); |
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vwrite(level, fmt, args); |
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va_end(args); |
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} |
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const size_t vwrite_buffer_size = 512; |
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void LogTagSet::vwrite(LogLevelType level, const char* fmt, va_list args) { |
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assert(level >= LogLevel::First && level <= LogLevel::Last, "Log level:%d is incorrect", level); |
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char buf[vwrite_buffer_size]; |
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va_list saved_args; // For re-format on buf overflow. |
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va_copy(saved_args, args); |
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size_t prefix_len = _write_prefix(buf, sizeof(buf)); |
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// Check that string fits in buffer; resize buffer if necessary |
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int ret; |
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if (prefix_len < vwrite_buffer_size) { |
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ret = os::vsnprintf(buf + prefix_len, sizeof(buf) - prefix_len, fmt, args); |
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} else { |
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// Buffer too small. Just call printf to find out the length for realloc below. |
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ret = os::vsnprintf(buf, sizeof(buf), fmt, args); |
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} |
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assert(ret >= 0, "Log message buffer issue"); |
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if ((size_t)ret >= sizeof(buf)) { |
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size_t newbuf_len = prefix_len + ret + 1; |
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char* newbuf = NEW_C_HEAP_ARRAY(char, newbuf_len, mtLogging); |
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prefix_len = _write_prefix(newbuf, newbuf_len); |
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ret = os::vsnprintf(newbuf + prefix_len, newbuf_len - prefix_len, fmt, saved_args); |
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assert(ret >= 0, "Log message buffer issue"); |
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log(level, newbuf); |
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FREE_C_HEAP_ARRAY(char, newbuf); |
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} else { |
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log(level, buf); |
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} |
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va_end(saved_args); |
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} |
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static const size_t TagSetBufferSize = 128; |
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void LogTagSet::describe_tagsets(outputStream* out) { |
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out->print_cr("Described tag combinations:"); |
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for (const LogTagSetDescription* d = tagset_descriptions; d->tagset != NULL; d++) { |
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char buf[TagSetBufferSize]; |
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d->tagset->label(buf, sizeof(buf), "+"); |
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out->print_cr(" %s: %s", buf, d->descr); |
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} |
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} |
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static int qsort_strcmp(const void* a, const void* b) { |
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return strcmp((*(const char**)a), (*(const char**)b)); |
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} |
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void LogTagSet::list_all_tagsets(outputStream* out) { |
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char** tagset_labels = NEW_C_HEAP_ARRAY(char*, _ntagsets, mtLogging); |
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// Generate the list of tagset labels |
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size_t idx = 0; |
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for (LogTagSet* ts = first(); ts != NULL; ts = ts->next()) { |
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char buf[TagSetBufferSize]; |
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ts->label(buf, sizeof(buf), "+"); |
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tagset_labels[idx++] = os::strdup_check_oom(buf, mtLogging); |
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} |
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assert(idx == _ntagsets, "_ntagsets and list of tagsets not in sync"); |
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// Sort them lexicographically |
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qsort(tagset_labels, _ntagsets, sizeof(*tagset_labels), qsort_strcmp); |
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// Print and then free the labels |
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out->print("All available tag sets: "); |
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for (idx = 0; idx < _ntagsets; idx++) { |
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out->print("%s%s", (idx == 0 ? "" : ", "), tagset_labels[idx]); |
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os::free(tagset_labels[idx]); |
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} |
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out->cr(); |
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FREE_C_HEAP_ARRAY(char*, tagset_labels); |
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} |
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