Skip to content

ERROR_HANDLING.md

Latest commit

 

History

History
323 lines (266 loc) · 6.74 KB

ERROR_HANDLING.md

File metadata and controls

323 lines (266 loc) · 6.74 KB

Error Handling and Validation

Overview

The library provides comprehensive error handling and validation across all components:

  1. Error Detection and Handling
  2. Input Validation
  3. Resource Management
  4. Performance Validation

Error Handling System

Error Types

// Define error types
typedef enum {
    ERROR_NONE = 0,
    ERROR_INVALID_PARAM = -1,
    ERROR_MEMORY = -2,
    ERROR_HARDWARE = -3,
    ERROR_QUANTUM = -4,
    ERROR_NETWORK = -5,
    ERROR_TIMEOUT = -6,
    ERROR_RESOURCE = -7,
    ERROR_STATE = -8,
    ERROR_INITIALIZATION = -9,
    ERROR_VALIDATION = -10
} error_code_t;

Error Context

// Initialize error context
error_context_t context = {
    .error_code = ERROR_NONE,
    .error_message = "",
    .file = __FILE__,
    .line = __LINE__,
    .function = __func__,
    .severity = SEVERITY_ERROR
};

// Set error handler
set_error_handler(&context, custom_error_handler);

// Error handling example
result = operation_with_error_handling(&context);
if (result != ERROR_NONE) {
    handle_error(&context, result);
}

Input Validation

Parameter Validation

// Validate parameters
validation_result_t validate_parameters(const void* params) {
    validation_context_t ctx = {
        .validation_level = VALIDATION_STRICT,
        .enable_warnings = true,
        .log_invalid = true
    };
    
    // Type checking
    if (!is_valid_type(params, expected_type)) {
        set_validation_error(&ctx, "Invalid parameter type");
        return VALIDATION_TYPE_ERROR;
    }
    
    // Range checking
    if (!is_in_range(params)) {
        set_validation_error(&ctx, "Parameter out of range");
        return VALIDATION_RANGE_ERROR;
    }
    
    // Format validation
    if (!has_valid_format(params)) {
        set_validation_error(&ctx, "Invalid parameter format");
        return VALIDATION_FORMAT_ERROR;
    }
    
    return VALIDATION_SUCCESS;
}

Resource Validation

// Validate system resources
resource_validation_t validate_resources() {
    resource_context_t ctx = {
        .check_memory = true,
        .check_gpu = true,
        .check_quantum = true,
        .check_network = true
    };
    
    // Memory validation
    if (!has_sufficient_memory(&ctx)) {
        return RESOURCE_INSUFFICIENT_MEMORY;
    }
    
    // GPU validation
    if (!has_required_gpu_capabilities(&ctx)) {
        return RESOURCE_INSUFFICIENT_GPU;
    }
    
    // Quantum validation
    if (!has_quantum_resources(&ctx)) {
        return RESOURCE_NO_QUANTUM;
    }
    
    return RESOURCE_VALIDATION_SUCCESS;
}

Error Recovery

Automatic Recovery

// Configure recovery system
recovery_config_t config = {
    .max_retries = 3,
    .retry_delay = 1000,  // ms
    .escalation_policy = ESCALATE_TO_FALLBACK,
    .enable_logging = true
};

// Initialize recovery system
initialize_recovery_system(&config);

// Recovery example
result = operation_with_recovery();
if (is_recoverable_error(result)) {
    recover_from_error(result);
}

Manual Recovery

// Manual error recovery
void handle_error_manually(error_code_t error) {
    switch (error) {
        case ERROR_MEMORY:
            free_unused_resources();
            retry_operation();
            break;
            
        case ERROR_HARDWARE:
            reset_hardware();
            reinitialize_system();
            break;
            
        case ERROR_QUANTUM:
            switch_to_classical_mode();
            break;
            
        default:
            log_unhandled_error(error);
            abort_operation();
    }
}

Performance Validation

Runtime Checks

// Configure runtime validation
runtime_validation_t config = {
    .check_performance = true,
    .check_accuracy = true,
    .check_stability = true,
    .log_violations = true
};

// Initialize validation
initialize_runtime_validation(&config);

// Validation example
validation_result_t result = validate_runtime_metrics();
if (result != VALIDATION_SUCCESS) {
    handle_validation_failure(result);
}

Resource Monitoring

// Configure resource monitoring
monitoring_config_t config = {
    .monitor_memory = true,
    .monitor_gpu = true,
    .monitor_quantum = true,
    .sampling_interval = 100  // ms
};

// Start monitoring
start_resource_monitoring(&config);

// Check resource usage
resource_metrics_t metrics;
get_resource_metrics(&metrics);

if (metrics.memory_usage > MEMORY_THRESHOLD) {
    handle_memory_pressure();
}

Best Practices

  1. Error Handling

    • Always check return values
    • Use appropriate error types
    • Implement recovery strategies
    • Log error conditions

  2. Input Validation

    • Validate all parameters
    • Check value ranges
    • Verify data formats
    • Handle invalid input

  3. Resource Management

    • Monitor resource usage
    • Implement cleanup
    • Handle resource exhaustion
    • Track allocations

  4. Performance Validation

    • Monitor runtime metrics
    • Track resource usage
    • Validate results
    • Log performance issues

Error Logging

Configuration

// Configure error logging
logging_config_t config = {
    .log_level = LOG_LEVEL_DEBUG,
    .log_file = "error.log",
    .max_file_size = 10 * 1024 * 1024,  // 10MB
    .enable_rotation = true
};

// Initialize logging
initialize_error_logging(&config);

Usage

// Log error with context
void log_error_with_context(error_context_t* ctx) {
    log_entry_t entry = {
        .timestamp = get_current_time(),
        .error_code = ctx->error_code,
        .message = ctx->error_message,
        .severity = ctx->severity,
        .stack_trace = get_stack_trace()
    };
    
    log_error_entry(&entry);
}

Error Analysis

Statistics

// Get error statistics
error_stats_t stats;
get_error_statistics(&stats);

printf("Total Errors: %d\n", stats.total_errors);
printf("Recovered: %d\n", stats.recovered_errors);
printf("Unhandled: %d\n", stats.unhandled_errors);

Analysis

// Analyze error patterns
error_analysis_t analysis;
analyze_error_patterns(&analysis);

printf("Most Common Error: %s\n", analysis.most_common);
printf("Average Recovery Time: %.2f ms\n", analysis.avg_recovery_time);
printf("Error Distribution:\n%s\n", analysis.distribution);

Integration

System Integration

// Initialize error handling system
error_system_config_t config = {
    .enable_logging = true,
    .enable_recovery = true,
    .enable_monitoring = true,
    .enable_analysis = true
};

// Start error handling system
initialize_error_system(&config);

Cleanup

// Cleanup error handling resources
void cleanup_error_system() {
    // Stop monitoring
    stop_error_monitoring();
    
    // Flush logs
    flush_error_logs();
    
    // Free resources
    cleanup_error_resources();
    
    // Reset state
    reset_error_system();
}