| /* |
| * 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. |
| * |
| */ |
| #include "precompiled.hpp" |
| #include "logging/log.hpp" |
| #include "logging/logConfiguration.hpp" |
| #include "logging/logDecorations.hpp" |
| #include "logging/logDecorators.hpp" |
| #include "logging/logDiagnosticCommand.hpp" |
| #include "logging/logFileOutput.hpp" |
| #include "logging/logOutput.hpp" |
| #include "logging/logTagLevelExpression.hpp" |
| #include "logging/logTagSet.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "runtime/mutexLocker.hpp" |
| #include "runtime/os.inline.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| |
| LogOutput** LogConfiguration::_outputs = NULL; |
| size_t LogConfiguration::_n_outputs = 0; |
| bool LogConfiguration::_post_initialized = false; |
| |
| void LogConfiguration::post_initialize() { |
| assert(LogConfiguration_lock != NULL, "Lock must be initialized before post-initialization"); |
| LogDiagnosticCommand::registerCommand(); |
| LogHandle(logging) log; |
| log.info("Log configuration fully initialized."); |
| log_develop_info(logging)("Develop logging is available."); |
| if (log.is_trace()) { |
| ResourceMark rm; |
| MutexLocker ml(LogConfiguration_lock); |
| describe(log.trace_stream()); |
| } |
| |
| _post_initialized = true; |
| } |
| |
| void LogConfiguration::initialize(jlong vm_start_time) { |
| LogFileOutput::set_file_name_parameters(vm_start_time); |
| LogDecorations::set_vm_start_time_millis(vm_start_time); |
| |
| assert(_outputs == NULL, "Should not initialize _outputs before this function, initialize called twice?"); |
| _outputs = NEW_C_HEAP_ARRAY(LogOutput*, 2, mtLogging); |
| _outputs[0] = LogOutput::Stdout; |
| _outputs[1] = LogOutput::Stderr; |
| _n_outputs = 2; |
| } |
| |
| void LogConfiguration::finalize() { |
| for (size_t i = 2; i < _n_outputs; i++) { |
| delete _outputs[i]; |
| } |
| FREE_C_HEAP_ARRAY(LogOutput*, _outputs); |
| } |
| |
| size_t LogConfiguration::find_output(const char* name) { |
| for (size_t i = 0; i < _n_outputs; i++) { |
| if (strcmp(_outputs[i]->name(), name) == 0) { |
| return i; |
| } |
| } |
| return SIZE_MAX; |
| } |
| |
| LogOutput* LogConfiguration::new_output(char* name, const char* options) { |
| const char* type; |
| char* equals_pos = strchr(name, '='); |
| if (equals_pos == NULL) { |
| type = "file"; |
| } else { |
| *equals_pos = '\0'; |
| type = name; |
| name = equals_pos + 1; |
| } |
| |
| LogOutput* output; |
| if (strcmp(type, "file") == 0) { |
| output = new LogFileOutput(name); |
| } else { |
| // unsupported log output type |
| return NULL; |
| } |
| |
| bool success = output->initialize(options); |
| if (!success) { |
| delete output; |
| return NULL; |
| } |
| return output; |
| } |
| |
| size_t LogConfiguration::add_output(LogOutput* output) { |
| size_t idx = _n_outputs++; |
| _outputs = REALLOC_C_HEAP_ARRAY(LogOutput*, _outputs, _n_outputs, mtLogging); |
| _outputs[idx] = output; |
| return idx; |
| } |
| |
| void LogConfiguration::delete_output(size_t idx) { |
| assert(idx > 1 && idx < _n_outputs, |
| "idx must be in range 1 < idx < _n_outputs, but idx = " SIZE_FORMAT |
| " and _n_outputs = " SIZE_FORMAT, idx, _n_outputs); |
| LogOutput* output = _outputs[idx]; |
| // Swap places with the last output and shrink the array |
| _outputs[idx] = _outputs[--_n_outputs]; |
| _outputs = REALLOC_C_HEAP_ARRAY(LogOutput*, _outputs, _n_outputs, mtLogging); |
| delete output; |
| } |
| |
| void LogConfiguration::configure_output(size_t idx, const LogTagLevelExpression& tag_level_expression, const LogDecorators& decorators) { |
| assert(idx < _n_outputs, "Invalid index, idx = " SIZE_FORMAT " and _n_outputs = " SIZE_FORMAT, idx, _n_outputs); |
| LogOutput* output = _outputs[idx]; |
| |
| // Clear the previous config description |
| output->clear_config_string(); |
| |
| bool enabled = false; |
| for (LogTagSet* ts = LogTagSet::first(); ts != NULL; ts = ts->next()) { |
| LogLevelType level = tag_level_expression.level_for(*ts); |
| |
| // Ignore tagsets that do not, and will not log on the output |
| if (!ts->has_output(output) && (level == LogLevel::NotMentioned || level == LogLevel::Off)) { |
| continue; |
| } |
| |
| // Update decorators before adding/updating output level, |
| // so that the tagset will have the necessary decorators when requiring them. |
| if (level != LogLevel::Off) { |
| ts->update_decorators(decorators); |
| } |
| |
| // Set the new level, if it changed |
| if (level != LogLevel::NotMentioned) { |
| ts->set_output_level(output, level); |
| } |
| |
| if (level != LogLevel::Off) { |
| // Keep track of whether or not the output is ever used by some tagset |
| enabled = true; |
| |
| if (level == LogLevel::NotMentioned) { |
| // Look up the previously set level for this output on this tagset |
| level = ts->level_for(output); |
| } |
| |
| // Update the config description with this tagset and level |
| output->add_to_config_string(ts, level); |
| } |
| } |
| |
| // It is now safe to set the new decorators for the actual output |
| output->set_decorators(decorators); |
| |
| // Update the decorators on all tagsets to get rid of unused decorators |
| for (LogTagSet* ts = LogTagSet::first(); ts != NULL; ts = ts->next()) { |
| ts->update_decorators(); |
| } |
| |
| if (enabled) { |
| assert(strlen(output->config_string()) > 0, |
| "Should always have a config description if the output is enabled."); |
| } else if (idx > 1) { |
| // Output is unused and should be removed. |
| delete_output(idx); |
| } else { |
| // Output is either stdout or stderr, which means we can't remove it. |
| // Update the config description to reflect that the output is disabled. |
| output->set_config_string("all=off"); |
| } |
| } |
| |
| void LogConfiguration::disable_output(size_t idx) { |
| LogOutput* out = _outputs[idx]; |
| |
| // Remove the output from all tagsets. |
| for (LogTagSet* ts = LogTagSet::first(); ts != NULL; ts = ts->next()) { |
| ts->set_output_level(out, LogLevel::Off); |
| ts->update_decorators(); |
| } |
| |
| // Delete the output unless stdout/stderr |
| if (out != LogOutput::Stderr && out != LogOutput::Stdout) { |
| delete_output(find_output(out->name())); |
| } else { |
| out->set_config_string("all=off"); |
| } |
| } |
| |
| void LogConfiguration::disable_logging() { |
| assert(LogConfiguration_lock == NULL || LogConfiguration_lock->owned_by_self(), |
| "LogConfiguration lock must be held when calling this function"); |
| for (size_t i = 0; i < _n_outputs; i++) { |
| disable_output(i); |
| } |
| } |
| |
| void LogConfiguration::configure_stdout(LogLevelType level, bool exact_match, ...) { |
| assert(LogConfiguration_lock == NULL || LogConfiguration_lock->owned_by_self(), |
| "LogConfiguration lock must be held when calling this function"); |
| |
| size_t i; |
| va_list ap; |
| LogTagLevelExpression expr; |
| va_start(ap, exact_match); |
| for (i = 0; i < LogTag::MaxTags; i++) { |
| LogTagType tag = static_cast<LogTagType>(va_arg(ap, int)); |
| expr.add_tag(tag); |
| if (tag == LogTag::__NO_TAG) { |
| assert(i > 0, "Must specify at least one tag!"); |
| break; |
| } |
| } |
| assert(i < LogTag::MaxTags || static_cast<LogTagType>(va_arg(ap, int)) == LogTag::__NO_TAG, |
| "Too many tags specified! Can only have up to " SIZE_FORMAT " tags in a tag set.", LogTag::MaxTags); |
| va_end(ap); |
| |
| if (!exact_match) { |
| expr.set_allow_other_tags(); |
| } |
| expr.set_level(level); |
| expr.new_combination(); |
| |
| // Apply configuration to stdout (output #0), with the same decorators as before. |
| configure_output(0, expr, LogOutput::Stdout->decorators()); |
| } |
| |
| bool LogConfiguration::parse_command_line_arguments(const char* opts) { |
| char* copy = os::strdup_check_oom(opts, mtLogging); |
| |
| // Split the option string to its colon separated components. |
| char* what = NULL; |
| char* output_str = NULL; |
| char* decorators_str = NULL; |
| char* output_options = NULL; |
| |
| what = copy; |
| char* colon = strchr(what, ':'); |
| if (colon != NULL) { |
| *colon = '\0'; |
| output_str = colon + 1; |
| colon = strchr(output_str, ':'); |
| if (colon != NULL) { |
| *colon = '\0'; |
| decorators_str = colon + 1; |
| colon = strchr(decorators_str, ':'); |
| if (colon != NULL) { |
| *colon = '\0'; |
| output_options = colon + 1; |
| } |
| } |
| } |
| |
| // Parse each argument |
| char errbuf[512]; |
| stringStream ss(errbuf, sizeof(errbuf)); |
| bool success = parse_log_arguments(output_str, what, decorators_str, output_options, &ss); |
| if (!success) { |
| errbuf[strlen(errbuf) - 1] = '\0'; // Strip trailing newline. |
| log_error(logging)("%s", errbuf); |
| } |
| |
| os::free(copy); |
| return success; |
| } |
| |
| bool LogConfiguration::parse_log_arguments(const char* outputstr, |
| const char* what, |
| const char* decoratorstr, |
| const char* output_options, |
| outputStream* errstream) { |
| assert(LogConfiguration_lock == NULL || LogConfiguration_lock->owned_by_self(), |
| "LogConfiguration lock must be held when calling this function"); |
| if (outputstr == NULL || strlen(outputstr) == 0) { |
| outputstr = "stdout"; |
| } |
| |
| size_t idx; |
| if (outputstr[0] == '#') { |
| int ret = sscanf(outputstr+1, SIZE_FORMAT, &idx); |
| if (ret != 1 || idx >= _n_outputs) { |
| errstream->print_cr("Invalid output index '%s'", outputstr); |
| return false; |
| } |
| } else { |
| idx = find_output(outputstr); |
| if (idx == SIZE_MAX) { |
| char* tmp = os::strdup_check_oom(outputstr, mtLogging); |
| LogOutput* output = new_output(tmp, output_options); |
| os::free(tmp); |
| if (output == NULL) { |
| errstream->print("Unable to add output '%s'", outputstr); |
| if (output_options != NULL && strlen(output_options) > 0) { |
| errstream->print(" with options '%s'", output_options); |
| } |
| errstream->cr(); |
| return false; |
| } |
| idx = add_output(output); |
| } else if (output_options != NULL && strlen(output_options) > 0) { |
| errstream->print_cr("Output options for existing outputs are ignored."); |
| } |
| } |
| |
| LogTagLevelExpression expr; |
| if (!expr.parse(what, errstream)) { |
| return false; |
| } |
| |
| LogDecorators decorators; |
| if (!decorators.parse(decoratorstr, errstream)) { |
| return false; |
| } |
| |
| configure_output(idx, expr, decorators); |
| return true; |
| } |
| |
| void LogConfiguration::describe(outputStream* out) { |
| assert(LogConfiguration_lock == NULL || LogConfiguration_lock->owned_by_self(), |
| "LogConfiguration lock must be held when calling this function"); |
| |
| out->print("Available log levels:"); |
| for (size_t i = 0; i < LogLevel::Count; i++) { |
| out->print("%s %s", (i == 0 ? "" : ","), LogLevel::name(static_cast<LogLevelType>(i))); |
| } |
| out->cr(); |
| |
| out->print("Available log decorators:"); |
| for (size_t i = 0; i < LogDecorators::Count; i++) { |
| LogDecorators::Decorator d = static_cast<LogDecorators::Decorator>(i); |
| out->print("%s %s (%s)", (i == 0 ? "" : ","), LogDecorators::name(d), LogDecorators::abbreviation(d)); |
| } |
| out->cr(); |
| |
| out->print("Available log tags:"); |
| for (size_t i = 1; i < LogTag::Count; i++) { |
| out->print("%s %s", (i == 1 ? "" : ","), LogTag::name(static_cast<LogTagType>(i))); |
| } |
| out->cr(); |
| |
| out->print_cr("Log output configuration:"); |
| for (size_t i = 0; i < _n_outputs; i++) { |
| out->print("#" SIZE_FORMAT ": %s %s ", i, _outputs[i]->name(), _outputs[i]->config_string()); |
| for (size_t d = 0; d < LogDecorators::Count; d++) { |
| LogDecorators::Decorator decorator = static_cast<LogDecorators::Decorator>(d); |
| if (_outputs[i]->decorators().is_decorator(decorator)) { |
| out->print("%s,", LogDecorators::name(decorator)); |
| } |
| } |
| out->cr(); |
| } |
| } |
| |
| void LogConfiguration::print_command_line_help(FILE* out) { |
| jio_fprintf(out, "-Xlog Usage: -Xlog[:[what][:[output][:[decorators][:output-options]]]]\n" |
| "\t where 'what' is a combination of tags and levels on the form tag1[+tag2...][*][=level][,...]\n" |
| "\t Unless wildcard (*) is specified, only log messages tagged with exactly the tags specified will be matched.\n\n"); |
| |
| jio_fprintf(out, "Available log levels:\n"); |
| for (size_t i = 0; i < LogLevel::Count; i++) { |
| jio_fprintf(out, "%s %s", (i == 0 ? "" : ","), LogLevel::name(static_cast<LogLevelType>(i))); |
| } |
| |
| jio_fprintf(out, "\n\nAvailable log decorators: \n"); |
| for (size_t i = 0; i < LogDecorators::Count; i++) { |
| LogDecorators::Decorator d = static_cast<LogDecorators::Decorator>(i); |
| jio_fprintf(out, "%s %s (%s)", (i == 0 ? "" : ","), LogDecorators::name(d), LogDecorators::abbreviation(d)); |
| } |
| jio_fprintf(out, "\n Decorators can also be specified as 'none' for no decoration.\n\n"); |
| |
| jio_fprintf(out, "Available log tags:\n"); |
| for (size_t i = 1; i < LogTag::Count; i++) { |
| jio_fprintf(out, "%s %s", (i == 1 ? "" : ","), LogTag::name(static_cast<LogTagType>(i))); |
| } |
| jio_fprintf(out, "\n Specifying 'all' instead of a tag combination matches all tag combinations.\n\n"); |
| |
| jio_fprintf(out, "Available log outputs:\n" |
| " stdout, stderr, file=<filename>\n" |
| " Specifying %%p and/or %%t in the filename will expand to the JVM's PID and startup timestamp, respectively.\n\n" |
| |
| "Some examples:\n" |
| " -Xlog\n" |
| "\t Log all messages using 'info' level to stdout with 'uptime', 'levels' and 'tags' decorations.\n" |
| "\t (Equivalent to -Xlog:all=info:stdout:uptime,levels,tags).\n\n" |
| |
| " -Xlog:gc\n" |
| "\t Log messages tagged with 'gc' tag using 'info' level to stdout, with default decorations.\n\n" |
| |
| " -Xlog:gc=debug:file=gc.txt:none\n" |
| "\t Log messages tagged with 'gc' tag using 'debug' level to file 'gc.txt' with no decorations.\n\n" |
| |
| " -Xlog:gc=trace:file=gctrace.txt:uptimemillis,pids:filecount=5,filesize=1024\n" |
| "\t Log messages tagged with 'gc' tag using 'trace' level to a rotating fileset of 5 files of size 1MB,\n" |
| "\t using the base name 'gctrace.txt', with 'uptimemillis' and 'pid' decorations.\n\n" |
| |
| " -Xlog:gc::uptime,tid\n" |
| "\t Log messages tagged with 'gc' tag using 'info' level to output 'stdout', using 'uptime' and 'tid' decorations.\n\n" |
| |
| " -Xlog:gc*=info,rt*=off\n" |
| "\t Log messages tagged with at least 'gc' using 'info' level, but turn off logging of messages tagged with 'rt'.\n" |
| "\t (Messages tagged with both 'gc' and 'rt' will not be logged.)\n\n" |
| |
| " -Xlog:disable -Xlog:rt=trace:rttrace.txt\n" |
| "\t Turn off all logging, including warnings and errors,\n" |
| "\t and then enable messages tagged with 'rt' using 'trace' level to file 'rttrace.txt'.\n"); |
| } |
| |
| void LogConfiguration::rotate_all_outputs() { |
| for (size_t idx = 0; idx < _n_outputs; idx++) { |
| if (_outputs[idx]->is_rotatable()) { |
| _outputs[idx]->rotate(true); |
| } |
| } |
| } |
| |