Snapshot of pool activity metrics.
std::size_t stolen_tasks
Total number of tasks stolen by workers (work-stealing pools).
std::size_t total_threads
Number of worker threads owned by the pool.
std::size_t completed_tasks
Total number of tasks completed since pool start.
std::size_t pending_tasks
Number of queued tasks waiting for execution.
std::size_t active_threads
Number of workers currently executing a task.
std::chrono::microseconds average_task_time
Average task execution time measured by the backend.
double tasks_per_second
Approximate throughput in tasks per second.