critical_writer.h File Reference

Synchronous wrapper for critical log messages to prevent loss. More...

#include "base_writer.h"
#include "../interfaces/writer_category.h"
#include <kcenon/logger/logger_export.h>
#include <atomic>
#include <memory>
#include <mutex>
#include <fstream>
#include <functional>

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Classes
struct	kcenon::logger::critical_writer_config
	Configuration for critical log writer. More...
class	kcenon::logger::critical_writer
	Synchronous wrapper ensuring critical logs are never lost. More...
struct	kcenon::logger::critical_writer::critical_stats
	Get statistics about critical writes. More...
class	kcenon::logger::hybrid_writer
	Combines async writer for normal logs with critical_writer for safety. More...

Namespaces
namespace	kcenon
namespace	kcenon::logger

Detailed Description

Synchronous wrapper for critical log messages to prevent loss.

Author

kcenon

Since

1.1.0

This writer ensures critical logs are immediately written to disk and flushed, preventing message loss during crashes or abnormal termination. It wraps any base_writer and forces synchronous operation for critical/fatal messages while allowing async operation for lower severity levels.

Key Features:

• Immediate flush for critical/fatal messages (no queuing)
• Signal handler registration for graceful shutdown
• Dual-mode operation: sync for critical, async for others
• Write-ahead logging option for maximum durability
• Crash recovery support

Definition in file critical_writer.h.