rte_epoll.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(C) 2021 Marvell International Ltd.
 */

#ifndef __RTE_EPOLL_H__
#define __RTE_EPOLL_H__

#include <stdint.h>

#include <rte_stdatomic.h>

#ifdef __cplusplus
extern "C" {
#endif

#define RTE_INTR_EVENT_ADD            1UL
#define RTE_INTR_EVENT_DEL            2UL

typedef void (*rte_intr_event_cb_t)(int fd, void *arg);

struct rte_epoll_data {
    uint32_t event;               
    void *data;                   
    rte_intr_event_cb_t cb_fun;   
    void *cb_arg;                 
};

enum {
    RTE_EPOLL_INVALID = 0,
    RTE_EPOLL_VALID,
    RTE_EPOLL_EXEC,
};

struct rte_epoll_event {
    RTE_ATOMIC(uint32_t) status;           
    int fd;                    
    int epfd;       
    struct rte_epoll_data epdata;
};

#define RTE_EPOLL_PER_THREAD        -1  
int
rte_epoll_wait(int epfd, struct rte_epoll_event *events,
           int maxevents, int timeout);

int
rte_epoll_wait_interruptible(int epfd, struct rte_epoll_event *events,
           int maxevents, int timeout);

int
rte_epoll_ctl(int epfd, int op, int fd,
          struct rte_epoll_event *event);

#ifdef __cplusplus
}
#endif

#endif /* __RTE_EPOLL_H__ */