| /* |
| * Copyright (c) 2015, 2017, 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. |
| * |
| */ |
| #include "precompiled.hpp" |
| #include "logging/logDecorations.hpp" |
| #include "logging/logFileStreamOutput.hpp" |
| #include "logging/logLevel.hpp" |
| #include "logging/logMessageBuffer.hpp" |
| #include "logging/logOutput.hpp" |
| #include "logging/logTag.hpp" |
| #include "logging/logTagSet.hpp" |
| #include "logging/logTagSetDescriptions.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "prims/jvm.h" |
| #include "utilities/ostream.hpp" |
| |
| LogTagSet* LogTagSet::_list = NULL; |
| size_t LogTagSet::_ntagsets = 0; |
| |
| // This constructor is called only during static initialization. |
| // See the declaration in logTagSet.hpp for more information. |
| LogTagSet::LogTagSet(PrefixWriter prefix_writer, LogTagType t0, LogTagType t1, LogTagType t2, LogTagType t3, LogTagType t4) |
| : _next(_list), _write_prefix(prefix_writer) { |
| _tag[0] = t0; |
| _tag[1] = t1; |
| _tag[2] = t2; |
| _tag[3] = t3; |
| _tag[4] = t4; |
| for (_ntags = 0; _ntags < LogTag::MaxTags && _tag[_ntags] != LogTag::__NO_TAG; _ntags++) { |
| } |
| _list = this; |
| _ntagsets++; |
| |
| // Set the default output to warning and error level for all new tagsets. |
| _output_list.set_output_level(&StdoutLog, LogLevel::Default); |
| } |
| |
| void LogTagSet::update_decorators(const LogDecorators& decorator) { |
| LogDecorators new_decorators = decorator; |
| for (LogOutputList::Iterator it = _output_list.iterator(); it != _output_list.end(); it++) { |
| new_decorators.combine_with((*it)->decorators()); |
| } |
| _decorators = new_decorators; |
| } |
| |
| bool LogTagSet::has_output(const LogOutput* output) { |
| for (LogOutputList::Iterator it = _output_list.iterator(); it != _output_list.end(); it++) { |
| if (*it == output) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void LogTagSet::log(LogLevelType level, const char* msg) { |
| LogDecorations decorations(level, *this, _decorators); |
| for (LogOutputList::Iterator it = _output_list.iterator(level); it != _output_list.end(); it++) { |
| (*it)->write(decorations, msg); |
| } |
| } |
| |
| void LogTagSet::log(const LogMessageBuffer& msg) { |
| LogDecorations decorations(LogLevel::Invalid, *this, _decorators); |
| for (LogOutputList::Iterator it = _output_list.iterator(msg.least_detailed_level()); it != _output_list.end(); it++) { |
| (*it)->write(msg.iterator(it.level(), decorations)); |
| } |
| } |
| |
| int LogTagSet::label(char* buf, size_t len, const char* separator) const { |
| int tot_written = 0; |
| for (size_t i = 0; i < _ntags; i++) { |
| int written = jio_snprintf(buf + tot_written, len - tot_written, "%s%s", |
| (i == 0 ? "" : separator), |
| LogTag::name(_tag[i])); |
| if (written < 0) { |
| return -1; |
| } |
| tot_written += written; |
| } |
| return tot_written; |
| } |
| |
| void LogTagSet::write(LogLevelType level, const char* fmt, ...) { |
| va_list args; |
| va_start(args, fmt); |
| vwrite(level, fmt, args); |
| va_end(args); |
| } |
| |
| const size_t vwrite_buffer_size = 512; |
| |
| void LogTagSet::vwrite(LogLevelType level, const char* fmt, va_list args) { |
| assert(level >= LogLevel::First && level <= LogLevel::Last, "Log level:%d is incorrect", level); |
| char buf[vwrite_buffer_size]; |
| va_list saved_args; // For re-format on buf overflow. |
| va_copy(saved_args, args); |
| size_t prefix_len = _write_prefix(buf, sizeof(buf)); |
| // Check that string fits in buffer; resize buffer if necessary |
| int ret; |
| if (prefix_len < vwrite_buffer_size) { |
| ret = os::log_vsnprintf(buf + prefix_len, sizeof(buf) - prefix_len, fmt, args); |
| } else { |
| // Buffer too small. Just call printf to find out the length for realloc below. |
| ret = os::log_vsnprintf(buf, sizeof(buf), fmt, args); |
| } |
| assert(ret >= 0, "Log message buffer issue"); |
| if ((size_t)ret >= sizeof(buf)) { |
| size_t newbuf_len = prefix_len + ret + 1; |
| char* newbuf = NEW_C_HEAP_ARRAY(char, newbuf_len, mtLogging); |
| prefix_len = _write_prefix(newbuf, newbuf_len); |
| ret = os::log_vsnprintf(newbuf + prefix_len, newbuf_len - prefix_len, fmt, saved_args); |
| assert(ret >= 0, "Log message buffer issue"); |
| log(level, newbuf); |
| FREE_C_HEAP_ARRAY(char, newbuf); |
| } else { |
| log(level, buf); |
| } |
| va_end(saved_args); |
| } |
| |
| static const size_t TagSetBufferSize = 128; |
| |
| void LogTagSet::describe_tagsets(outputStream* out) { |
| out->print_cr("Described tag combinations:"); |
| for (const LogTagSetDescription* d = tagset_descriptions; d->tagset != NULL; d++) { |
| char buf[TagSetBufferSize]; |
| d->tagset->label(buf, sizeof(buf), "+"); |
| out->print_cr(" %s: %s", buf, d->descr); |
| } |
| } |
| |
| static int qsort_strcmp(const void* a, const void* b) { |
| return strcmp((*(const char**)a), (*(const char**)b)); |
| } |
| |
| void LogTagSet::list_all_tagsets(outputStream* out) { |
| char** tagset_labels = NEW_C_HEAP_ARRAY(char*, _ntagsets, mtLogging); |
| |
| // Generate the list of tagset labels |
| size_t idx = 0; |
| for (LogTagSet* ts = first(); ts != NULL; ts = ts->next()) { |
| char buf[TagSetBufferSize]; |
| ts->label(buf, sizeof(buf), "+"); |
| tagset_labels[idx++] = os::strdup_check_oom(buf, mtLogging); |
| } |
| assert(idx == _ntagsets, "_ntagsets and list of tagsets not in sync"); |
| |
| // Sort them lexicographically |
| qsort(tagset_labels, _ntagsets, sizeof(*tagset_labels), qsort_strcmp); |
| |
| // Print and then free the labels |
| out->print("All available tag sets: "); |
| for (idx = 0; idx < _ntagsets; idx++) { |
| out->print("%s%s", (idx == 0 ? "" : ", "), tagset_labels[idx]); |
| os::free(tagset_labels[idx]); |
| } |
| out->cr(); |
| FREE_C_HEAP_ARRAY(char*, tagset_labels); |
| } |
| |