pub extern "c" fn os_signpost_interval_begin(log: os_log_t, signpos: os_signpost_id_t, func: [*]const u8, ...) void log: os_log_tsignpos: os_signpost_id_tfunc: [*]const u8990pub extern "c" fn os_signpost_interval_begin(log: os_log_t, signpos: os_signpost_id_t, func: [*]const u8, ...) void