mirror of
https://github.com/Lime3DS/Lime3DS
synced 2024-12-27 09:32:30 -06:00
Common: Remove async logging
It provided a large increase in complexity of the logging system while having a negligible performance impact: the usage patterns of the ring buffer meant that each log contended with the logging thread, causing it to effectively act as a synchronous extra buffering. Also removed some broken code related to filtering of subclasses which was broken since it was introduced. (Which means no one ever used that feature anyway, since, 8 months later, no one ever complained.)
This commit is contained in:
parent
cb2b2071a8
commit
b88c91dd3d
9 changed files with 32 additions and 222 deletions
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@ -20,14 +20,8 @@
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/// Application entry point
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/// Application entry point
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int main(int argc, char **argv) {
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int main(int argc, char **argv) {
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std::shared_ptr<Log::Logger> logger = Log::InitGlobalLogger();
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Log::Filter log_filter(Log::Level::Debug);
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Log::Filter log_filter(Log::Level::Debug);
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Log::SetFilter(&log_filter);
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Log::SetFilter(&log_filter);
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std::thread logging_thread(Log::TextLoggingLoop, logger);
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SCOPE_EXIT({
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logger->Close();
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logging_thread.join();
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});
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if (argc < 2) {
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if (argc < 2) {
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LOG_CRITICAL(Frontend, "Failed to load ROM: No ROM specified");
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LOG_CRITICAL(Frontend, "Failed to load ROM: No ROM specified");
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@ -350,14 +350,8 @@ void GMainWindow::closeEvent(QCloseEvent* event)
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int main(int argc, char* argv[])
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int main(int argc, char* argv[])
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{
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{
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std::shared_ptr<Log::Logger> logger = Log::InitGlobalLogger();
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Log::Filter log_filter(Log::Level::Info);
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Log::Filter log_filter(Log::Level::Info);
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Log::SetFilter(&log_filter);
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Log::SetFilter(&log_filter);
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std::thread logging_thread(Log::TextLoggingLoop, logger);
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SCOPE_EXIT({
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logger->Close();
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logging_thread.join();
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});
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QApplication::setAttribute(Qt::AA_X11InitThreads);
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QApplication::setAttribute(Qt::AA_X11InitThreads);
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QApplication app(argc, argv);
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QApplication app(argc, argv);
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@ -3,17 +3,17 @@
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// Refer to the license.txt file included.
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <algorithm>
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#include <array>
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#include <cstdio>
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#include "common/assert.h"
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#include "common/common_funcs.h" // snprintf compatibility define
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#include "common/logging/backend.h"
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#include "common/logging/backend.h"
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#include "common/logging/filter.h"
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#include "common/logging/log.h"
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#include "common/logging/log.h"
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#include "common/logging/text_formatter.h"
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#include "common/logging/text_formatter.h"
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namespace Log {
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namespace Log {
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static std::shared_ptr<Logger> global_logger;
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/// Macro listing all log classes. Code should define CLS and SUB as desired before invoking this.
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/// Macro listing all log classes. Code should define CLS and SUB as desired before invoking this.
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#define ALL_LOG_CLASSES() \
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#define ALL_LOG_CLASSES() \
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CLS(Log) \
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CLS(Log) \
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@ -55,28 +55,8 @@ static std::shared_ptr<Logger> global_logger;
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SUB(Render, OpenGL) \
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SUB(Render, OpenGL) \
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CLS(Loader)
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CLS(Loader)
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Logger::Logger() {
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// Register logging classes so that they can be queried at runtime
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size_t parent_class;
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all_classes.reserve((size_t)Class::Count);
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#define CLS(x) \
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all_classes.push_back(Class::x); \
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parent_class = all_classes.size() - 1;
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#define SUB(x, y) \
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all_classes.push_back(Class::x##_##y); \
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all_classes[parent_class].num_children += 1;
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ALL_LOG_CLASSES()
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#undef CLS
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#undef SUB
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// Ensures that ALL_LOG_CLASSES isn't missing any entries.
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DEBUG_ASSERT(all_classes.size() == (size_t)Class::Count);
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}
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// GetClassName is a macro defined by Windows.h, grrr...
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// GetClassName is a macro defined by Windows.h, grrr...
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const char* Logger::GetLogClassName(Class log_class) {
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const char* GetLogClassName(Class log_class) {
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switch (log_class) {
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switch (log_class) {
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#define CLS(x) case Class::x: return #x;
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#define CLS(x) case Class::x: return #x;
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#define SUB(x, y) case Class::x##_##y: return #x "." #y;
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#define SUB(x, y) case Class::x##_##y: return #x "." #y;
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@ -87,7 +67,7 @@ const char* Logger::GetLogClassName(Class log_class) {
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return "Unknown";
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return "Unknown";
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}
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}
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const char* Logger::GetLevelName(Level log_level) {
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const char* GetLevelName(Level log_level) {
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#define LVL(x) case Level::x: return #x
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#define LVL(x) case Level::x: return #x
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switch (log_level) {
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switch (log_level) {
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LVL(Trace);
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LVL(Trace);
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@ -101,19 +81,6 @@ const char* Logger::GetLevelName(Level log_level) {
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#undef LVL
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#undef LVL
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}
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}
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void Logger::LogMessage(Entry entry) {
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ring_buffer.Push(std::move(entry));
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}
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size_t Logger::GetEntries(Entry* out_buffer, size_t buffer_len) {
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return ring_buffer.BlockingPop(out_buffer, buffer_len);
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}
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std::shared_ptr<Logger> InitGlobalLogger() {
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global_logger = std::make_shared<Logger>();
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return global_logger;
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}
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Entry CreateEntry(Class log_class, Level log_level,
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Entry CreateEntry(Class log_class, Level log_level,
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const char* filename, unsigned int line_nr, const char* function,
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const char* filename, unsigned int line_nr, const char* function,
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const char* format, va_list args) {
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const char* format, va_list args) {
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@ -138,7 +105,7 @@ Entry CreateEntry(Class log_class, Level log_level,
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return std::move(entry);
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return std::move(entry);
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}
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}
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static Filter* filter;
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static Filter* filter = nullptr;
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void SetFilter(Filter* new_filter) {
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void SetFilter(Filter* new_filter) {
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filter = new_filter;
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filter = new_filter;
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@ -147,7 +114,7 @@ void SetFilter(Filter* new_filter) {
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void LogMessage(Class log_class, Level log_level,
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void LogMessage(Class log_class, Level log_level,
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const char* filename, unsigned int line_nr, const char* function,
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const char* filename, unsigned int line_nr, const char* function,
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const char* format, ...) {
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const char* format, ...) {
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if (!filter->CheckMessage(log_class, log_level))
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if (filter != nullptr && !filter->CheckMessage(log_class, log_level))
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return;
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return;
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va_list args;
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va_list args;
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@ -156,12 +123,7 @@ void LogMessage(Class log_class, Level log_level,
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filename, line_nr, function, format, args);
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filename, line_nr, function, format, args);
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va_end(args);
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va_end(args);
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if (global_logger != nullptr && !global_logger->IsClosed()) {
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PrintColoredMessage(entry);
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global_logger->LogMessage(std::move(entry));
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} else {
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// Fall back to directly printing to stderr
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PrintMessage(entry);
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}
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}
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}
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}
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}
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@ -4,17 +4,17 @@
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#pragma once
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#pragma once
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#include <chrono>
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#include <cstdarg>
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#include <cstdarg>
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#include <memory>
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#include <string>
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#include <vector>
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#include <utility>
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#include "common/concurrent_ring_buffer.h"
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#include "common/logging/filter.h"
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#include "common/logging/log.h"
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#include "common/logging/log.h"
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namespace Log {
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namespace Log {
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class Filter;
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/**
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/**
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* A log entry. Log entries are store in a structured format to permit more varied output
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* A log entry. Log entries are store in a structured format to permit more varied output
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* formatting on different frontends, as well as facilitating filtering and aggregation.
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* formatting on different frontends, as well as facilitating filtering and aggregation.
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@ -48,89 +48,21 @@ struct Entry {
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}
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}
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};
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};
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struct ClassInfo {
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/**
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Class log_class;
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* Returns the name of the passed log class as a C-string. Subclasses are separated by periods
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* instead of underscores as in the enumeration.
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/**
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*/
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* Total number of (direct or indirect) sub classes this class has. If any, they follow in
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const char* GetLogClassName(Class log_class);
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* sequence after this class in the class list.
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*/
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unsigned int num_children = 0;
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ClassInfo(Class log_class) : log_class(log_class) {}
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};
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/**
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/**
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* Logging management class. This class has the dual purpose of acting as an exchange point between
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* Returns the name of the passed log level as a C-string.
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* the logging clients and the log outputter, as well as containing reflection info about available
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* log classes.
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*/
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*/
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class Logger {
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const char* GetLevelName(Level log_level);
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private:
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using Buffer = Common::ConcurrentRingBuffer<Entry, 16 * 1024 / sizeof(Entry)>;
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public:
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static const size_t QUEUE_CLOSED = Buffer::QUEUE_CLOSED;
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Logger();
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/**
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* Returns a list of all vector classes and subclasses. The sequence returned is a pre-order of
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* classes and subclasses, which together with the `num_children` field in ClassInfo, allows
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* you to recover the hierarchy.
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*/
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const std::vector<ClassInfo>& GetClasses() const { return all_classes; }
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/**
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* Returns the name of the passed log class as a C-string. Subclasses are separated by periods
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* instead of underscores as in the enumeration.
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*/
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static const char* GetLogClassName(Class log_class);
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/**
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* Returns the name of the passed log level as a C-string.
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*/
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static const char* GetLevelName(Level log_level);
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/**
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* Appends a messages to the log buffer.
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* @note This function is thread safe.
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*/
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void LogMessage(Entry entry);
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/**
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* Retrieves a batch of messages from the log buffer, blocking until they are available.
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* @note This function is thread safe.
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*
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* @param out_buffer Destination buffer that will receive the log entries.
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* @param buffer_len The maximum size of `out_buffer`.
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* @return The number of entries stored. In case the logger is shutting down, `QUEUE_CLOSED` is
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* returned, no entries are stored and the logger should shutdown.
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*/
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size_t GetEntries(Entry* out_buffer, size_t buffer_len);
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/**
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* Initiates a shutdown of the logger. This will indicate to log output clients that they
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* should shutdown.
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*/
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void Close() { ring_buffer.Close(); }
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/**
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* Returns true if Close() has already been called on the Logger.
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*/
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bool IsClosed() const { return ring_buffer.IsClosed(); }
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private:
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Buffer ring_buffer;
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std::vector<ClassInfo> all_classes;
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};
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/// Creates a log entry by formatting the given source location, and message.
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/// Creates a log entry by formatting the given source location, and message.
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Entry CreateEntry(Class log_class, Level log_level,
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Entry CreateEntry(Class log_class, Level log_level,
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const char* filename, unsigned int line_nr, const char* function,
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const char* filename, unsigned int line_nr, const char* function,
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const char* format, va_list args);
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const char* format, va_list args);
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/// Initializes the default Logger.
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std::shared_ptr<Logger> InitGlobalLogger();
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void SetFilter(Filter* filter);
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void SetFilter(Filter* filter);
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class_levels[static_cast<size_t>(log_class)] = level;
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class_levels[static_cast<size_t>(log_class)] = level;
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}
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}
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void Filter::SetSubclassesLevel(const ClassInfo& log_class, Level level) {
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const size_t log_class_i = static_cast<size_t>(log_class.log_class);
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const size_t begin = log_class_i + 1;
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const size_t end = begin + log_class.num_children;
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for (size_t i = begin; begin < end; ++i) {
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class_levels[i] = level;
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}
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}
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void Filter::ParseFilterString(const std::string& filter_str) {
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void Filter::ParseFilterString(const std::string& filter_str) {
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auto clause_begin = filter_str.cbegin();
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auto clause_begin = filter_str.cbegin();
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while (clause_begin != filter_str.cend()) {
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while (clause_begin != filter_str.cend()) {
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template <typename It>
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template <typename It>
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static Level GetLevelByName(const It begin, const It end) {
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static Level GetLevelByName(const It begin, const It end) {
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for (u8 i = 0; i < static_cast<u8>(Level::Count); ++i) {
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for (u8 i = 0; i < static_cast<u8>(Level::Count); ++i) {
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const char* level_name = Logger::GetLevelName(static_cast<Level>(i));
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const char* level_name = GetLevelName(static_cast<Level>(i));
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if (Common::ComparePartialString(begin, end, level_name)) {
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if (Common::ComparePartialString(begin, end, level_name)) {
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return static_cast<Level>(i);
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return static_cast<Level>(i);
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}
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}
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template <typename It>
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template <typename It>
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static Class GetClassByName(const It begin, const It end) {
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static Class GetClassByName(const It begin, const It end) {
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for (ClassType i = 0; i < static_cast<ClassType>(Class::Count); ++i) {
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for (ClassType i = 0; i < static_cast<ClassType>(Class::Count); ++i) {
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const char* level_name = Logger::GetLogClassName(static_cast<Class>(i));
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const char* level_name = GetLogClassName(static_cast<Class>(i));
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if (Common::ComparePartialString(begin, end, level_name)) {
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if (Common::ComparePartialString(begin, end, level_name)) {
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return static_cast<Class>(i);
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return static_cast<Class>(i);
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}
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}
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@ -72,20 +62,6 @@ static Class GetClassByName(const It begin, const It end) {
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return Class::Count;
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return Class::Count;
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}
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}
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template <typename InputIt, typename T>
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static InputIt find_last(InputIt begin, const InputIt end, const T& value) {
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auto match = end;
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while (begin != end) {
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auto new_match = std::find(begin, end, value);
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if (new_match != end) {
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match = new_match;
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++new_match;
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}
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begin = new_match;
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}
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return match;
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}
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bool Filter::ParseFilterRule(const std::string::const_iterator begin,
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bool Filter::ParseFilterRule(const std::string::const_iterator begin,
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const std::string::const_iterator end) {
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const std::string::const_iterator end) {
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auto level_separator = std::find(begin, end, ':');
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auto level_separator = std::find(begin, end, ':');
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@ -106,22 +82,13 @@ bool Filter::ParseFilterRule(const std::string::const_iterator begin,
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return true;
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return true;
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}
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}
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auto class_name_end = find_last(begin, level_separator, '.');
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const Class log_class = GetClassByName(begin, level_separator);
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if (class_name_end != level_separator &&
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!Common::ComparePartialString(class_name_end + 1, level_separator, "*")) {
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class_name_end = level_separator;
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}
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const Class log_class = GetClassByName(begin, class_name_end);
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if (log_class == Class::Count) {
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if (log_class == Class::Count) {
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LOG_ERROR(Log, "Unknown log class in filter: %s", std::string(begin, end).c_str());
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LOG_ERROR(Log, "Unknown log class in filter: %s", std::string(begin, end).c_str());
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return false;
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return false;
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}
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}
|
||||||
|
|
||||||
if (class_name_end == level_separator) {
|
SetClassLevel(log_class, level);
|
||||||
SetClassLevel(log_class, level);
|
|
||||||
}
|
|
||||||
SetSubclassesLevel(log_class, level);
|
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -11,8 +11,6 @@
|
||||||
|
|
||||||
namespace Log {
|
namespace Log {
|
||||||
|
|
||||||
struct ClassInfo;
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Implements a log message filter which allows different log classes to have different minimum
|
* Implements a log message filter which allows different log classes to have different minimum
|
||||||
* severity levels. The filter can be changed at runtime and can be parsed from a string to allow
|
* severity levels. The filter can be changed at runtime and can be parsed from a string to allow
|
||||||
|
@ -27,29 +25,19 @@ public:
|
||||||
void ResetAll(Level level);
|
void ResetAll(Level level);
|
||||||
/// Sets the minimum level of `log_class` (and not of its subclasses) to `level`.
|
/// Sets the minimum level of `log_class` (and not of its subclasses) to `level`.
|
||||||
void SetClassLevel(Class log_class, Level level);
|
void SetClassLevel(Class log_class, Level level);
|
||||||
/**
|
|
||||||
* Sets the minimum level of all of `log_class` subclasses to `level`. The level of `log_class`
|
|
||||||
* itself is not changed.
|
|
||||||
*/
|
|
||||||
void SetSubclassesLevel(const ClassInfo& log_class, Level level);
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Parses a filter string and applies it to this filter.
|
* Parses a filter string and applies it to this filter.
|
||||||
*
|
*
|
||||||
* A filter string consists of a space-separated list of filter rules, each of the format
|
* A filter string consists of a space-separated list of filter rules, each of the format
|
||||||
* `<class>:<level>`. `<class>` is a log class name, with subclasses separated using periods.
|
* `<class>:<level>`. `<class>` is a log class name, with subclasses separated using periods.
|
||||||
* A rule for a given class also affects all of its subclasses. `*` wildcards are allowed and
|
* `*` is allowed as a class name and will reset all filters to the specified level. `<level>`
|
||||||
* can be used to apply a rule to all classes or to all subclasses of a class without affecting
|
* a severity level name which will be set as the minimum logging level of the matched classes.
|
||||||
* the parent class. `<level>` a severity level name which will be set as the minimum logging
|
* Rules are applied left to right, with each rule overriding previous ones in the sequence.
|
||||||
* level of the matched classes. Rules are applied left to right, with each rule overriding
|
|
||||||
* previous ones in the sequence.
|
|
||||||
*
|
*
|
||||||
* A few examples of filter rules:
|
* A few examples of filter rules:
|
||||||
* - `*:Info` -- Resets the level of all classes to Info.
|
* - `*:Info` -- Resets the level of all classes to Info.
|
||||||
* - `Service:Info` -- Sets the level of Service and all subclasses (Service.FS, Service.APT,
|
* - `Service:Info` -- Sets the level of Service to Info.
|
||||||
* etc.) to Info.
|
|
||||||
* - `Service.*:Debug` -- Sets the level of all Service subclasses to Debug, while leaving the
|
|
||||||
* level of Service unchanged.
|
|
||||||
* - `Service.FS:Trace` -- Sets the level of the Service.FS class to Trace.
|
* - `Service.FS:Trace` -- Sets the level of the Service.FS class to Trace.
|
||||||
*/
|
*/
|
||||||
void ParseFilterString(const std::string& filter_str);
|
void ParseFilterString(const std::string& filter_str);
|
||||||
|
|
|
@ -78,11 +78,7 @@ enum class Class : ClassType {
|
||||||
Count ///< Total number of logging classes
|
Count ///< Total number of logging classes
|
||||||
};
|
};
|
||||||
|
|
||||||
/**
|
/// Logs a message to the global logger.
|
||||||
* Logs a message to the global logger. This proxy exists to avoid exposing the details of the
|
|
||||||
* Logger class, including the ConcurrentRingBuffer template, to all files that desire to log
|
|
||||||
* messages, reducing unecessary recompilations.
|
|
||||||
*/
|
|
||||||
void LogMessage(Class log_class, Level log_level,
|
void LogMessage(Class log_class, Level log_level,
|
||||||
const char* filename, unsigned int line_nr, const char* function,
|
const char* filename, unsigned int line_nr, const char* function,
|
||||||
#ifdef _MSC_VER
|
#ifdef _MSC_VER
|
||||||
|
|
|
@ -46,8 +46,8 @@ void FormatLogMessage(const Entry& entry, char* out_text, size_t text_len) {
|
||||||
unsigned int time_seconds = static_cast<unsigned int>(entry.timestamp.count() / 1000000);
|
unsigned int time_seconds = static_cast<unsigned int>(entry.timestamp.count() / 1000000);
|
||||||
unsigned int time_fractional = static_cast<unsigned int>(entry.timestamp.count() % 1000000);
|
unsigned int time_fractional = static_cast<unsigned int>(entry.timestamp.count() % 1000000);
|
||||||
|
|
||||||
const char* class_name = Logger::GetLogClassName(entry.log_class);
|
const char* class_name = GetLogClassName(entry.log_class);
|
||||||
const char* level_name = Logger::GetLevelName(entry.log_level);
|
const char* level_name = GetLevelName(entry.log_level);
|
||||||
|
|
||||||
snprintf(out_text, text_len, "[%4u.%06u] %s <%s> %s: %s",
|
snprintf(out_text, text_len, "[%4u.%06u] %s <%s> %s: %s",
|
||||||
time_seconds, time_fractional, class_name, level_name,
|
time_seconds, time_fractional, class_name, level_name,
|
||||||
|
@ -116,19 +116,4 @@ void PrintColoredMessage(const Entry& entry) {
|
||||||
#endif
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
void TextLoggingLoop(std::shared_ptr<Logger> logger) {
|
|
||||||
std::array<Entry, 256> entry_buffer;
|
|
||||||
|
|
||||||
while (true) {
|
|
||||||
size_t num_entries = logger->GetEntries(entry_buffer.data(), entry_buffer.size());
|
|
||||||
if (num_entries == Logger::QUEUE_CLOSED) {
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
for (size_t i = 0; i < num_entries; ++i) {
|
|
||||||
const Entry& entry = entry_buffer[i];
|
|
||||||
PrintColoredMessage(entry);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
|
@ -5,11 +5,9 @@
|
||||||
#pragma once
|
#pragma once
|
||||||
|
|
||||||
#include <cstddef>
|
#include <cstddef>
|
||||||
#include <memory>
|
|
||||||
|
|
||||||
namespace Log {
|
namespace Log {
|
||||||
|
|
||||||
class Logger;
|
|
||||||
struct Entry;
|
struct Entry;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
@ -31,10 +29,4 @@ void PrintMessage(const Entry& entry);
|
||||||
/// Prints the same message as `PrintMessage`, but colored acoording to the severity level.
|
/// Prints the same message as `PrintMessage`, but colored acoording to the severity level.
|
||||||
void PrintColoredMessage(const Entry& entry);
|
void PrintColoredMessage(const Entry& entry);
|
||||||
|
|
||||||
/**
|
|
||||||
* Logging loop that repeatedly reads messages from the provided logger and prints them to the
|
|
||||||
* console. It is the baseline barebones log outputter.
|
|
||||||
*/
|
|
||||||
void TextLoggingLoop(std::shared_ptr<Logger> logger);
|
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue