Returns the next process-wide monotonic correlation id. Used to pair a
flight-recorder operation's start line (e.g. query: exec, poll: start)
with its terminus (query: ok / poll: done / *: error). Cheap (one int++),
globally unique across all corelib packages so two interleaved operations
never share an id. For cross-operation tracing, pair this with a higher-level
traceId threaded by the consuming application.
Returns the next process-wide monotonic correlation id. Used to pair a flight-recorder operation's start line (e.g.
query: exec,poll: start) with its terminus (query: ok/poll: done/*: error). Cheap (one int++), globally unique across all corelib packages so two interleaved operations never share an id. For cross-operation tracing, pair this with a higher-leveltraceIdthreaded by the consuming application.