/* worker.h - bounded worker pool for hash/crypto jobs off the reactor path. */
#ifndef NAUT_WORKER_H
#define NAUT_WORKER_H

#include "naut/common.h"

typedef struct naut_worker_pool naut_worker_pool;
typedef struct naut_job naut_job;
typedef void (*naut_job_fn)(naut_job *job);

struct naut_job {
    naut_job_fn run;
    void       *context;
    naut_err    result;
};

/* Jobs are caller-owned and must remain alive until popped from completions.
 * queue_capacity must be a power of two. cpu_base < 0 disables affinity. */
naut_worker_pool *naut_worker_pool_create(uint32_t threads,
                                          size_t queue_capacity,
                                          int cpu_base);
void naut_worker_pool_destroy(naut_worker_pool *pool);

bool naut_worker_submit(naut_worker_pool *pool, naut_job *job);
bool naut_worker_complete(naut_worker_pool *pool, naut_job **job);

/* Readable when one or more jobs complete. The caller drains the eventfd and
 * then pops completions. */
int naut_worker_eventfd(const naut_worker_pool *pool);
uint32_t naut_worker_threads(const naut_worker_pool *pool);

#endif /* NAUT_WORKER_H */