Struct Profiler 

pub struct Profiler {
    pub start_time: OnceLock<Instant>,
    pub kernel_load_duration: Mutex<Option<Duration>>,
    pub plugins_load_duration: Mutex<Option<Duration>>,
    pub total_http_nanos: AtomicU64,
    pub http_requests_count: AtomicUsize,
    pub http_retries_count: AtomicUsize,
    pub enabled: AtomicBool,
}

Global Profiler state.

Uses AtomicU64 for hot-path counters (HTTP duration, request/retry counts) to avoid mutex contention during concurrent multipart uploads. Mutex<Option<Duration>> is retained for one-shot milestone markers (kernel/plugins load) which are written at most once.

Note: const fn constructors for Mutex, OnceLock, and atomics require Rust 1.63+ / 1.70+ respectively. This crate requires Rust 1.88+.

Fields

start_time: OnceLock<Instant>

kernel_load_duration: Mutex<Option<Duration>>

plugins_load_duration: Mutex<Option<Duration>>

total_http_nanos: AtomicU64

Accumulated HTTP network duration in nanoseconds (lock-free).

http_requests_count: AtomicUsize

Number of logical HTTP requests (one per send_with_retry call).

http_retries_count: AtomicUsize

Number of HTTP retry attempts (retries only, not initial attempts).

enabled: AtomicBool