gp_poll.h

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//SPDX-License-Identifier: LGPL-2.0-or-later
/*
 
   Copyright (c) 2019-2023 Cyril Hrubis <metan@ucw.cz>
 
 */
 
#ifndef UTILS_GP_POLL
#define UTILS_GP_POLL
 
#include <utils/gp_types.h>
#include <utils/gp_list.h>
 
enum gp_poll_events {
        GP_POLLIN = 0x01,
        GP_POLLPRI = 0x02,
        GP_POLLOUT = 0x04,
        GP_POLLERR = 0x08,
        GP_POLLHUP = 0x10,
};
 
#define GP_POLLIN GP_POLLIN
#define GP_POLLPRI GP_POLLPRI
#define GP_POLLOUT GP_POLLOUT
#define GP_POLLERR GP_POLLERR
#define GP_POLLHUP GP_POLLHUP
 
typedef struct gp_poll {
        gp_dlist fds;
        int ep_fd;
} gp_poll;
 
enum gp_poll_event_ret {
        GP_POLL_RET_OK = 0,
        GP_POLL_RET_REM = 1,
};
 
struct gp_fd {
        gp_dlist_head lhead;
        enum gp_poll_event_ret (*event)(gp_fd *self);
        uint32_t events;
        uint32_t revents;
        int fd;
        void *priv;
};
 
void gp_poll_clear(gp_poll *self);
 
int gp_poll_add(gp_poll *self, gp_fd *fd);
 
int gp_poll_rem(gp_poll *self, gp_fd *fd);
 
gp_fd *gp_poll_rem_by_fd(gp_poll *self, int fd);
 
int gp_poll_wait(gp_poll *self, int timeout_ms);
 
static inline size_t gp_poll_fds(gp_poll *self)
{
        return self->fds.cnt;
}
 
#endif /* UTILS_GP_POLL */