-#ifndef EV_H
-#define EV_H
+/*
+ * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef EV_H__
+#define EV_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
typedef double ev_tstamp;
+/* these priorities are inclusive, higher priorities will be called earlier */
+#ifndef EV_MINPRI
+# define EV_MINPRI -2
+#endif
+#ifndef EV_MAXPRI
+# define EV_MAXPRI +2
+#endif
+
+#ifndef EV_MULTIPLICITY
+# define EV_MULTIPLICITY 1
+#endif
+
+#ifndef EV_PERIODIC_ENABLE
+# define EV_PERIODIC_ENABLE 1
+#endif
+
+#ifndef EV_STAT_ENABLE
+# define EV_STAT_ENABLE 1
+#endif
+
+#ifndef EV_IDLE_ENABLE
+# define EV_IDLE_ENABLE 1
+#endif
+
+#ifndef EV_FORK_ENABLE
+# define EV_FORK_ENABLE 1
+#endif
+
+#ifndef EV_EMBED_ENABLE
+# define EV_EMBED_ENABLE 1
+#endif
+
+/*****************************************************************************/
+
+#if EV_STAT_ENABLE
+# include <sys/stat.h>
+#endif
+
+/* support multiple event loops? */
+#if EV_MULTIPLICITY
+struct ev_loop;
+# define EV_P struct ev_loop *loop
+# define EV_P_ EV_P,
+# define EV_A loop
+# define EV_A_ EV_A,
+# define EV_DEFAULT ev_default_loop (0)
+# define EV_DEFAULT_ EV_DEFAULT,
+#else
+# define EV_P void
+# define EV_P_
+# define EV_A
+# define EV_A_
+# define EV_DEFAULT
+# define EV_DEFAULT_
+
+# undef EV_EMBED_ENABLE
+#endif
+
/* eventmask, revents, events... */
-#define EV_UNDEF -1 /* guaranteed to be invalid */
-#define EV_NONE 0x00
-#define EV_READ 0x01
-#define EV_WRITE 0x02
-#define EV_TIMEOUT 0x04
-#define EV_SIGNAL 0x08
-#define EV_IDLE 0x10
-#define EV_CHECK 0x20
+#define EV_UNDEF -1L /* guaranteed to be invalid */
+#define EV_NONE 0x00L /* no events */
+#define EV_READ 0x01L /* ev_io detected read will not block */
+#define EV_WRITE 0x02L /* ev_io detected write will not block */
+#define EV_IOFDSET 0x80L /* internal use only */
+#define EV_TIMEOUT 0x00000100L /* timer timed out */
+#define EV_PERIODIC 0x00000200L /* periodic timer timed out */
+#define EV_SIGNAL 0x00000400L /* signal was received */
+#define EV_CHILD 0x00000800L /* child/pid had status change */
+#define EV_STAT 0x00001000L /* stat data changed */
+#define EV_IDLE 0x00002000L /* event loop is idling */
+#define EV_PREPARE 0x00004000L /* event loop about to poll */
+#define EV_CHECK 0x00008000L /* event loop finished poll */
+#define EV_EMBED 0x00010000L /* embedded event loop needs sweep */
+#define EV_FORK 0x00020000L /* event loop resumed in child */
+#define EV_ERROR 0x80000000L /* sent when an error occurs */
+
+/* can be used to add custom fields to all watchers, while losing binary compatibility */
+#ifndef EV_COMMON
+# define EV_COMMON void *data;
+#endif
+#ifndef EV_PROTOTYPES
+# define EV_PROTOTYPES 1
+#endif
+
+#define EV_VERSION_MAJOR 2
+#define EV_VERSION_MINOR 0
+
+#ifndef EV_CB_DECLARE
+# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
+#endif
+#ifndef EV_CB_INVOKE
+# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
+#endif
+
+/*
+ * struct member types:
+ * private: you can look at them, but not change them, and they might not mean anything to you.
+ * ro: can be read anytime, but only changed when the watcher isn't active
+ * rw: can be read and modified anytime, even when the watcher is active
+ */
/* shared by all watchers */
#define EV_WATCHER(type) \
int active; /* private */ \
int pending; /* private */ \
- void *data; /* rw */ \
- void (*cb)(struct type *, int revents) /* rw */ /* gets invoked with an eventmask */
+ int priority; /* private */ \
+ EV_COMMON /* rw */ \
+ EV_CB_DECLARE (type) /* private */
#define EV_WATCHER_LIST(type) \
- EV_WATCHER (type); \
- struct type *next /* private */
+ EV_WATCHER (type) \
+ struct ev_watcher_list *next; /* private */
+
+#define EV_WATCHER_TIME(type) \
+ EV_WATCHER (type) \
+ ev_tstamp at; /* private */
-/* invoked at a specific time or after a specific time, repeatable */
-struct ev_timer
+/* base class, nothing to see here unless you subclass */
+typedef struct ev_watcher
{
- EV_WATCHER_LIST (ev_timer);
+ EV_WATCHER (ev_watcher)
+} ev_watcher;
- ev_tstamp at; /* private */
- ev_tstamp repeat; /* rw */
- unsigned char is_abs; /* ro */
-};
+/* base class, nothing to see here unless you subclass */
+typedef struct ev_watcher_list
+{
+ EV_WATCHER_LIST (ev_watcher_list)
+} ev_watcher_list;
+
+/* base class, nothing to see here unless you subclass */
+typedef struct ev_watcher_time
+{
+ EV_WATCHER_TIME (ev_watcher_time)
+} ev_watcher_time;
/* invoked when fd is either EV_READable or EV_WRITEable */
-struct ev_io
+/* revent EV_READ, EV_WRITE */
+typedef struct ev_io
{
- EV_WATCHER_LIST (ev_io);
+ EV_WATCHER_LIST (ev_io)
int fd; /* ro */
int events; /* ro */
-};
+} ev_io;
+
+/* invoked after a specific time, repeatable (based on monotonic clock) */
+/* revent EV_TIMEOUT */
+typedef struct ev_timer
+{
+ EV_WATCHER_TIME (ev_timer)
+
+ ev_tstamp repeat; /* rw */
+} ev_timer;
+
+/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
+/* revent EV_PERIODIC */
+typedef struct ev_periodic
+{
+ EV_WATCHER_TIME (ev_periodic)
+
+ ev_tstamp offset; /* rw */
+ ev_tstamp interval; /* rw */
+ ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
+} ev_periodic;
/* invoked when the given signal has been received */
-struct ev_signal
+/* revent EV_SIGNAL */
+typedef struct ev_signal
{
- EV_WATCHER_LIST (ev_signal);
+ EV_WATCHER_LIST (ev_signal)
int signum; /* ro */
-};
+} ev_signal;
+
+/* invoked when sigchld is received and waitpid indicates the given pid */
+/* revent EV_CHILD */
+/* does not support priorities */
+typedef struct ev_child
+{
+ EV_WATCHER_LIST (ev_child)
+
+ int pid; /* ro */
+ int rpid; /* rw, holds the received pid */
+ int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
+} ev_child;
+
+#if EV_STAT_ENABLE
+/* st_nlink = 0 means missing file or other error */
+# ifdef _WIN32
+typedef struct _stati64 ev_statdata;
+# else
+typedef struct stat ev_statdata;
+# endif
+
+/* invoked each time the stat data changes for a given path */
+/* revent EV_STAT */
+typedef struct ev_stat
+{
+ EV_WATCHER_LIST (ev_stat)
+
+ ev_timer timer; /* private */
+ ev_tstamp interval; /* ro */
+ const char *path; /* ro */
+ ev_statdata prev; /* ro */
+ ev_statdata attr; /* ro */
+
+ int wd; /* wd for inotify, fd for kqueue */
+} ev_stat;
+#endif
+#if EV_IDLE_ENABLE
/* invoked when the nothing else needs to be done, keeps the process from blocking */
-struct ev_idle
+/* revent EV_IDLE */
+typedef struct ev_idle
{
- EV_WATCHER (ev_idle);
-};
+ EV_WATCHER (ev_idle)
+} ev_idle;
+#endif
+
+/* invoked for each run of the mainloop, just before the blocking call */
+/* you can still change events in any way you like */
+/* revent EV_PREPARE */
+typedef struct ev_prepare
+{
+ EV_WATCHER (ev_prepare)
+} ev_prepare;
-/* invoked for each run of the mainloop, just before the next blocking vall is initiated */
-struct ev_check
+/* invoked for each run of the mainloop, just after the blocking call */
+/* revent EV_CHECK */
+typedef struct ev_check
{
- EV_WATCHER (ev_check);
+ EV_WATCHER (ev_check)
+} ev_check;
+
+#if EV_FORK_ENABLE
+/* the callback gets invoked before check in the child process when a fork was detected */
+typedef struct ev_fork
+{
+ EV_WATCHER (ev_fork)
+} ev_fork;
+#endif
+
+#if EV_EMBED_ENABLE
+/* used to embed an event loop inside another */
+/* the callback gets invoked when the event loop has handled events, and can be 0 */
+typedef struct ev_embed
+{
+ EV_WATCHER (ev_embed)
+
+ struct ev_loop *other; /* ro */
+ ev_io io; /* private */
+ ev_prepare prepare; /* private */
+ ev_check check; /* unused */
+ ev_timer timer; /* unused */
+ ev_periodic periodic; /* unused */
+ ev_idle idle; /* unused */
+ ev_fork fork; /* unused */
+} ev_embed;
+#endif
+
+/* the presence of this union forces similar struct layout */
+union ev_any_watcher
+{
+ struct ev_watcher w;
+ struct ev_watcher_list wl;
+
+ struct ev_io io;
+ struct ev_timer timer;
+ struct ev_periodic periodic;
+ struct ev_signal signal;
+ struct ev_child child;
+#if EV_STAT_ENABLE
+ struct ev_stat stat;
+#endif
+#if EV_IDLE_ENABLE
+ struct ev_idle idle;
+#endif
+ struct ev_prepare prepare;
+ struct ev_check check;
+#if EV_FORK_ENABLE
+ struct ev_fork fork;
+#endif
+#if EV_EMBED_ENABLE
+ struct ev_embed embed;
+#endif
};
-#define EVMETHOD_NONE 0
-#define EVMETHOD_SELECT 1
-#define EVMETHOD_EPOLL 2
-int ev_init (int flags); /* returns ev_method */
-extern int ev_method;
+/* bits for ev_default_loop and ev_loop_new */
+/* the default */
+#define EVFLAG_AUTO 0x00000000UL /* not quite a mask */
+/* flag bits */
+#define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */
+#define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */
+/* method bits to be ored together */
+#define EVBACKEND_SELECT 0x00000001UL /* about anywhere */
+#define EVBACKEND_POLL 0x00000002UL /* !win */
+#define EVBACKEND_EPOLL 0x00000004UL /* linux */
+#define EVBACKEND_KQUEUE 0x00000008UL /* bsd */
+#define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */
+#define EVBACKEND_PORT 0x00000020UL /* solaris 10 */
+
+#if EV_PROTOTYPES
+int ev_version_major (void);
+int ev_version_minor (void);
-/* these three calls are suitable for plugging into pthread_atfork */
-void ev_prefork (void);
-void ev_postfork_parent (void);
-void ev_postfork_child (void);
+unsigned int ev_supported_backends (void);
+unsigned int ev_recommended_backends (void);
+unsigned int ev_embeddable_backends (void);
-extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */
ev_tstamp ev_time (void);
+void ev_sleep (ev_tstamp delay); /* sleep for a while */
+
+/* Sets the allocation function to use, works like realloc.
+ * It is used to allocate and free memory.
+ * If it returns zero when memory needs to be allocated, the library might abort
+ * or take some potentially destructive action.
+ * The default is your system realloc function.
+ */
+void ev_set_allocator (void *(*cb)(void *ptr, long size));
+
+/* set the callback function to call on a
+ * retryable syscall error
+ * (such as failed select, poll, epoll_wait)
+ */
+void ev_set_syserr_cb (void (*cb)(const char *msg));
+
+# if EV_MULTIPLICITY
+/* the default loop is the only one that handles signals and child watchers */
+/* you can call this as often as you like */
+static struct ev_loop *
+ev_default_loop (unsigned int flags)
+{
+ extern struct ev_loop *ev_default_loop_ptr;
+ extern struct ev_loop *ev_default_loop_init (unsigned int flags);
+
+ if (!ev_default_loop_ptr)
+ ev_default_loop_init (flags);
+
+ return ev_default_loop_ptr;
+}
+
+/* create and destroy alternative loops that don't handle signals */
+struct ev_loop *ev_loop_new (unsigned int flags);
+void ev_loop_destroy (EV_P);
+void ev_loop_fork (EV_P);
+
+ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
+
+# else
+
+int ev_default_loop (unsigned int flags); /* returns true when successful */
+
+static ev_tstamp
+ev_now (void)
+{
+ extern ev_tstamp ev_rt_now;
+
+ return ev_rt_now;
+}
+# endif
+
+void ev_default_destroy (void); /* destroy the default loop */
+/* this needs to be called after fork, to duplicate the default loop */
+/* if you create alternative loops you have to call ev_loop_fork on them */
+/* you can call it in either the parent or the child */
+/* you can actually call it at any time, anywhere :) */
+void ev_default_fork (void);
+
+unsigned int ev_backend (EV_P); /* backend in use by loop */
+unsigned int ev_loop_count (EV_P); /* number of loop iterations */
+#endif
#define EVLOOP_NONBLOCK 1 /* do not block/wait */
#define EVLOOP_ONESHOT 2 /* block *once* only */
-void ev_loop (int flags);
-extern int ev_loop_done; /* set to 1 to break out of event loop */
+#define EVUNLOOP_CANCEL 0 /* undo unloop */
+#define EVUNLOOP_ONE 1 /* unloop once */
+#define EVUNLOOP_ALL 2 /* unloop all loops */
+
+#if EV_PROTOTYPES
+void ev_loop (EV_P_ int flags);
+void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */
+
+void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
+void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
+
+/*
+ * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
+ * keeps one reference. if you have a long-runing watcher you never unregister that
+ * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
+ */
+void ev_ref (EV_P);
+void ev_unref (EV_P);
+
+/* convinience function, wait for a single event, without registering an event watcher */
+/* if timeout is < 0, do wait indefinitely */
+void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
+#endif
/* these may evaluate ev multiple times, and the other arguments at most once */
-#define evw_init(ev,cb_,data_) do { (ev)->active = 0; (ev)->cb = (cb_); (ev)->data = (void *)data_; } while (0)
+/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
+#define ev_init(ev,cb_) do { \
+ ((ev_watcher *)(void *)(ev))->active = \
+ ((ev_watcher *)(void *)(ev))->pending = \
+ ((ev_watcher *)(void *)(ev))->priority = 0; \
+ ev_set_cb ((ev), cb_); \
+} while (0)
+
+#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0)
+#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
+#define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0)
+#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
+#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)
+#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
+#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
+#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
+
+#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
+#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
+#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0)
+#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
+#define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
+#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
+#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
+#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
+#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
+#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
+#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
+
+#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
+#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
-#define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0)
-#define evtimer_set_rel(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); (ev)->is_abs = 0; } while (0)
-#define evtimer_set_abs(ev,at_,repeat_) do { (ev)->at = (at_); (ev)->repeat = (repeat_); (ev)->is_abs = 1; } while (0)
-#define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
+#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
+#define ev_cb(ev) (ev)->cb /* rw */
+#define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri)
-#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */
+#ifndef ev_set_cb
+# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
+#endif
/* stopping (enabling, adding) a watcher does nothing if it is already running */
/* stopping (disabling, deleting) a watcher does nothing unless its already running */
-void evio_start (struct ev_io *w);
-void evio_stop (struct ev_io *w);
+#if EV_PROTOTYPES
+
+/* feeds an event into a watcher as if the event actually occured */
+/* accepts any ev_watcher type */
+void ev_feed_event (EV_P_ void *w, int revents);
+void ev_feed_fd_event (EV_P_ int fd, int revents);
+void ev_feed_signal_event (EV_P_ int signum);
+void ev_invoke (EV_P_ void *w, int revents);
+int ev_clear_pending (EV_P_ void *w);
+
+void ev_io_start (EV_P_ ev_io *w);
+void ev_io_stop (EV_P_ ev_io *w);
+
+void ev_timer_start (EV_P_ ev_timer *w);
+void ev_timer_stop (EV_P_ ev_timer *w);
+/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
+void ev_timer_again (EV_P_ ev_timer *w);
+
+#if EV_PERIODIC_ENABLE
+void ev_periodic_start (EV_P_ ev_periodic *w);
+void ev_periodic_stop (EV_P_ ev_periodic *w);
+void ev_periodic_again (EV_P_ ev_periodic *w);
+#endif
+
+/* only supported in the default loop */
+void ev_signal_start (EV_P_ ev_signal *w);
+void ev_signal_stop (EV_P_ ev_signal *w);
-void evtimer_start (struct ev_timer *w);
-void evtimer_stop (struct ev_timer *w);
+/* only supported in the default loop */
+void ev_child_start (EV_P_ ev_child *w);
+void ev_child_stop (EV_P_ ev_child *w);
-void evsignal_start (struct ev_signal *w);
-void evsignal_stop (struct ev_signal *w);
+# if EV_STAT_ENABLE
+void ev_stat_start (EV_P_ ev_stat *w);
+void ev_stat_stop (EV_P_ ev_stat *w);
+void ev_stat_stat (EV_P_ ev_stat *w);
+# endif
-void evidle_start (struct ev_idle *w);
-void evidle_stop (struct ev_idle *w);
+# if EV_IDLE_ENABLE
+void ev_idle_start (EV_P_ ev_idle *w);
+void ev_idle_stop (EV_P_ ev_idle *w);
+# endif
-void evcheck_start (struct ev_check *w);
-void evcheck_stop (struct ev_check *w);
+void ev_prepare_start (EV_P_ ev_prepare *w);
+void ev_prepare_stop (EV_P_ ev_prepare *w);
+
+void ev_check_start (EV_P_ ev_check *w);
+void ev_check_stop (EV_P_ ev_check *w);
+
+# if EV_FORK_ENABLE
+void ev_fork_start (EV_P_ ev_fork *w);
+void ev_fork_stop (EV_P_ ev_fork *w);
+# endif
+
+# if EV_EMBED_ENABLE
+/* only supported when loop to be embedded is in fact embeddable */
+void ev_embed_start (EV_P_ ev_embed *w);
+void ev_embed_stop (EV_P_ ev_embed *w);
+void ev_embed_sweep (EV_P_ ev_embed *w);
+# endif
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
#endif
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