/* * uloop - event loop implementation * * Copyright (C) 2010-2013 Felix Fietkau * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef _ULOOP_H__ #define _ULOOP_H__ #include #include #include #include #include #if defined(__APPLE__) || defined(__FreeBSD__) #define USE_KQUEUE #else #define USE_EPOLL #endif #include "list.h" struct uloop_fd; struct uloop_timeout; struct uloop_process; typedef void (*uloop_fd_handler)(struct uloop_fd *u, unsigned int events); typedef void (*uloop_timeout_handler)(struct uloop_timeout *t); typedef void (*uloop_process_handler)(struct uloop_process *c, int ret); #define ULOOP_READ (1 << 0) #define ULOOP_WRITE (1 << 1) #define ULOOP_EDGE_TRIGGER (1 << 2) #define ULOOP_BLOCKING (1 << 3) #define ULOOP_EVENT_MASK (ULOOP_READ | ULOOP_WRITE) /* internal flags */ #define ULOOP_EVENT_BUFFERED (1 << 4) #ifdef USE_KQUEUE #define ULOOP_EDGE_DEFER (1 << 5) #endif #define ULOOP_ERROR_CB (1 << 6) struct uloop_fd { uloop_fd_handler cb; int fd; bool eof; bool error; bool registered; uint8_t flags; }; struct uloop_timeout { struct list_head list; bool pending; uloop_timeout_handler cb; struct timeval time; }; struct uloop_process { struct list_head list; bool pending; uloop_process_handler cb; pid_t pid; }; extern bool uloop_cancelled; extern bool uloop_handle_sigchld; int uloop_fd_add(struct uloop_fd *sock, unsigned int flags); int uloop_fd_delete(struct uloop_fd *sock); int uloop_timeout_add(struct uloop_timeout *timeout); int uloop_timeout_set(struct uloop_timeout *timeout, int msecs); int uloop_timeout_cancel(struct uloop_timeout *timeout); int64_t uloop_timeout_remaining(struct uloop_timeout *timeout); int uloop_process_add(struct uloop_process *p); int uloop_process_delete(struct uloop_process *p); bool uloop_cancelling(void); static inline void uloop_end(void) { uloop_cancelled = true; } int uloop_init(void); int uloop_run_timeout(int timeout); static inline int uloop_run(void) { return uloop_run_timeout(-1); } void uloop_done(void); #endif