Function system_time_to_nanos

pub fn system_time_to_nanos(time: SystemTime) -> u64

Convert a specific SystemTime to nanoseconds since Unix epoch

This function takes a SystemTime parameter and converts it to nanoseconds since Unix epoch, with proper error handling consistent with other timestamp functions in this module.

Arguments

• time - The SystemTime to convert

Returns

Nanoseconds since Unix epoch as u64

Error Handling

When the provided time is before Unix epoch:

• Logs a critical error
• Falls back to current system time
• With panic-on-clock-error feature: Panics on system clock failure
• Without feature: Returns sentinel value on system clock failure

This provides consistent error handling with other timestamp functions.