typedef struct ev_watcher_list *WL;
typedef struct ev_watcher_time *WT;
-static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */
-static ev_tstamp rt_now;
-static int method;
+static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
-static int have_monotonic; /* runtime */
+/*****************************************************************************/
-static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
-static void (*method_modify)(EV_P_ int fd, int oev, int nev);
-static void (*method_poll)(EV_P_ ev_tstamp timeout);
+typedef struct
+{
+ struct ev_watcher_list *head;
+ unsigned char events;
+ unsigned char reify;
+} ANFD;
-static int activecnt; /* number of active events */
+typedef struct
+{
+ W w;
+ int events;
+} ANPENDING;
-#if EV_USE_SELECT
-static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
-static int vec_max;
-#endif
+#if EV_MULTIPLICITY
-#if EV_USEV_POLL
-static struct pollfd *polls;
-static int pollmax, pollcnt;
-static int *pollidxs; /* maps fds into structure indices */
-static int pollidxmax;
-#endif
+struct ev_loop
+{
+# define VAR(name,decl) decl;
+# include "ev_vars.h"
+};
+# undef VAR
+# include "ev_wrap.h"
-#if EV_USE_EPOLL
-static int epoll_fd = -1;
+#else
-static struct epoll_event *events;
-static int eventmax;
-#endif
+# define VAR(name,decl) static decl;
+# include "ev_vars.h"
+# undef VAR
-#if EV_USE_KQUEUE
-static int kqueue_fd;
-static struct kevent *kqueue_changes;
-static int kqueue_changemax, kqueue_changecnt;
-static struct kevent *kqueue_events;
-static int kqueue_eventmax;
#endif
/*****************************************************************************/
/*****************************************************************************/
-typedef struct
-{
- struct ev_watcher_list *head;
- unsigned char events;
- unsigned char reify;
-} ANFD;
-
-static ANFD *anfds;
-static int anfdmax;
-
static void
anfds_init (ANFD *base, int count)
{
}
}
-typedef struct
-{
- W w;
- int events;
-} ANPENDING;
-
-static ANPENDING *pendings [NUMPRI];
-static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
-
static void
event (EV_P_ W w, int events)
{
/*****************************************************************************/
-static int *fdchanges;
-static int fdchangemax, fdchangecnt;
-
static void
fd_reify (EV_P)
{
}
}
-/*****************************************************************************/
+/* susually called after fork if method needs to re-arm all fds from scratch */
+static void
+fd_rearm_all (EV_P)
+{
+ int fd;
-static struct ev_timer **timers;
-static int timermax, timercnt;
+ /* this should be highly optimised to not do anything but set a flag */
+ for (fd = 0; fd < anfdmax; ++fd)
+ if (anfds [fd].events)
+ {
+ anfds [fd].events = 0;
+ fd_change (fd);
+ }
+}
-static struct ev_periodic **periodics;
-static int periodicmax, periodiccnt;
+/*****************************************************************************/
static void
-upheap (WT *timers, int k)
+upheap (WT *heap, int k)
{
- WT w = timers [k];
+ WT w = heap [k];
- while (k && timers [k >> 1]->at > w->at)
+ while (k && heap [k >> 1]->at > w->at)
{
- timers [k] = timers [k >> 1];
- timers [k]->active = k + 1;
+ heap [k] = heap [k >> 1];
+ heap [k]->active = k + 1;
k >>= 1;
}
- timers [k] = w;
- timers [k]->active = k + 1;
+ heap [k] = w;
+ heap [k]->active = k + 1;
}
static void
-downheap (WT *timers, int N, int k)
+downheap (WT *heap, int N, int k)
{
- WT w = timers [k];
+ WT w = heap [k];
while (k < (N >> 1))
{
int j = k << 1;
- if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
+ if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
++j;
- if (w->at <= timers [j]->at)
+ if (w->at <= heap [j]->at)
break;
- timers [k] = timers [j];
- timers [k]->active = k + 1;
+ heap [k] = heap [j];
+ heap [k]->active = k + 1;
k = j;
}
- timers [k] = w;
- timers [k]->active = k + 1;
+ heap [k] = w;
+ heap [k]->active = k + 1;
}
/*****************************************************************************/
static int sigpipe [2];
static sig_atomic_t volatile gotsig;
-static struct ev_io sigev;
static void
signals_init (ANSIG *base, int count)
#endif
ev_io_set (&sigev, sigpipe [0], EV_READ);
- ev_io_start (&sigev);
+ ev_io_start (EV_A_ &sigev);
ev_unref (EV_A); /* child watcher should not keep loop alive */
}
/*****************************************************************************/
-static struct ev_idle **idles;
-static int idlemax, idlecnt;
-
-static struct ev_prepare **prepares;
-static int preparemax, preparecnt;
-
-static struct ev_check **checks;
-static int checkmax, checkcnt;
-
-/*****************************************************************************/
-
-static struct ev_child *childs [PID_HASHSIZE];
-static struct ev_signal childev;
-
#ifndef WIN32
#ifndef WCONTINUED
return method;
}
-int
-ev_init (EV_P_ int methods)
+static void
+loop_init (EV_P_ int methods)
{
if (!method)
{
rt_now = ev_time ();
mn_now = get_clock ();
now_floor = mn_now;
- diff = rt_now - mn_now;
-
- if (pipe (sigpipe))
- return 0;
+ rtmn_diff = rt_now - mn_now;
if (methods == EVMETHOD_AUTO)
- if (!enable_secure () && getenv ("LIBmethodS"))
- methods = atoi (getenv ("LIBmethodS"));
+ if (!enable_secure () && getenv ("LIBEV_METHODS"))
+ methods = atoi (getenv ("LIBEV_METHODS"));
else
methods = EVMETHOD_ANY;
#if EV_USE_SELECT
if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
#endif
+ }
+}
- if (method)
+void
+loop_destroy (EV_P)
+{
+#if EV_USE_KQUEUE
+ if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
+#endif
+#if EV_USE_EPOLL
+ if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
+#endif
+#if EV_USEV_POLL
+ if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
+#endif
+#if EV_USE_SELECT
+ if (method == EVMETHOD_SELECT) select_destroy (EV_A);
+#endif
+
+ method = 0;
+ /*TODO*/
+}
+
+void
+loop_fork (EV_P)
+{
+ /*TODO*/
+#if EV_USE_EPOLL
+ if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
+#endif
+#if EV_USE_KQUEUE
+ if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
+#endif
+}
+
+#if EV_MULTIPLICITY
+struct ev_loop *
+ev_loop_new (int methods)
+{
+ struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
+
+ loop_init (EV_A_ methods);
+
+ if (ev_methods (EV_A))
+ return loop;
+
+ return 0;
+}
+
+void
+ev_loop_destroy (EV_P)
+{
+ loop_destroy (EV_A);
+ free (loop);
+}
+
+void
+ev_loop_fork (EV_P)
+{
+ loop_fork (EV_A);
+}
+
+#endif
+
+#if EV_MULTIPLICITY
+struct ev_loop default_loop_struct;
+static struct ev_loop *default_loop;
+
+struct ev_loop *
+#else
+static int default_loop;
+
+int
+#endif
+ev_default_loop (int methods)
+{
+ if (sigpipe [0] == sigpipe [1])
+ if (pipe (sigpipe))
+ return 0;
+
+ if (!default_loop)
+ {
+#if EV_MULTIPLICITY
+ struct ev_loop *loop = default_loop = &default_loop_struct;
+#else
+ default_loop = 1;
+#endif
+
+ loop_init (EV_A_ methods);
+
+ if (ev_method (EV_A))
{
ev_watcher_init (&sigev, sigcb);
ev_set_priority (&sigev, EV_MAXPRI);
ev_unref (EV_A); /* child watcher should not keep loop alive */
#endif
}
+ else
+ default_loop = 0;
}
- return method;
+ return default_loop;
}
-/*****************************************************************************/
-
void
-ev_fork_prepare (void)
+ev_default_destroy (void)
{
- /* nop */
-}
+#if EV_MULTIPLICITY
+ struct ev_loop *loop = default_loop;
+#endif
-void
-ev_fork_parent (void)
-{
- /* nop */
+ ev_ref (EV_A); /* child watcher */
+ ev_signal_stop (EV_A_ &childev);
+
+ ev_ref (EV_A); /* signal watcher */
+ ev_io_stop (EV_A_ &sigev);
+
+ close (sigpipe [0]); sigpipe [0] = 0;
+ close (sigpipe [1]); sigpipe [1] = 0;
+
+ loop_destroy (EV_A);
}
void
-ev_fork_child (void)
+ev_default_fork (EV_P)
{
-#if EV_USE_EPOLL
- if (method == EVMETHOD_EPOLL)
- epoll_postfork_child ();
-#endif
+ loop_fork (EV_A);
- ev_io_stop (&sigev);
+ ev_io_stop (EV_A_ &sigev);
close (sigpipe [0]);
close (sigpipe [1]);
pipe (sigpipe);
- siginit ();
+
+ ev_ref (EV_A); /* signal watcher */
+ siginit (EV_A);
}
/*****************************************************************************/
else
ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
- event ((W)w, EV_TIMEOUT);
+ event (EV_A_ (W)w, EV_TIMEOUT);
}
}
}
static void
-periodics_reschedule (EV_P_ ev_tstamp diff)
+periodics_reschedule (EV_P)
{
int i;
if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
{
- rt_now = mn_now + diff;
+ rt_now = rtmn_diff + mn_now;
return 0;
}
else
{
if (time_update_monotonic (EV_A))
{
- ev_tstamp odiff = diff;
+ ev_tstamp odiff = rtmn_diff;
for (i = 4; --i; ) /* loop a few times, before making important decisions */
{
- diff = rt_now - mn_now;
+ rtmn_diff = rt_now - mn_now;
- if (fabs (odiff - diff) < MIN_TIMEJUMP)
+ if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
return; /* all is well */
rt_now = ev_time ();
now_floor = mn_now;
}
- periodics_reschedule (EV_A_ diff - odiff);
+ periodics_reschedule (EV_A);
/* no timer adjustment, as the monotonic clock doesn't jump */
+ /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
}
}
else
if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
{
- periodics_reschedule (EV_A_ rt_now - mn_now);
+ periodics_reschedule (EV_A);
/* adjust timers. this is easy, as the offset is the same for all */
for (i = 0; i < timercnt; ++i)
- timers [i]->at += diff;
+ timers [i]->at += rt_now - mn_now;
}
mn_now = rt_now;
ev_stop (EV_A_ (W)w);
}
-#ifndef SA_RESTART
-# define SA_RESTART 0
-#endif
-
-void
-ev_signal_start (EV_P_ struct ev_signal *w)
-{
- if (ev_is_active (w))
- return;
-
- assert (("ev_signal_start called with illegal signal number", w->signum > 0));
-
- ev_start (EV_A_ (W)w, 1);
- array_needsize (signals, signalmax, w->signum, signals_init);
- wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
-
- if (!w->next)
- {
- struct sigaction sa;
- sa.sa_handler = sighandler;
- sigfillset (&sa.sa_mask);
- sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
- sigaction (w->signum, &sa, 0);
- }
-}
-
-void
-ev_signal_stop (EV_P_ struct ev_signal *w)
-{
- ev_clear_pending (EV_A_ (W)w);
- if (!ev_is_active (w))
- return;
-
- wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
- ev_stop (EV_A_ (W)w);
-
- if (!signals [w->signum - 1].head)
- signal (w->signum, SIG_DFL);
-}
-
void
ev_idle_start (EV_P_ struct ev_idle *w)
{
ev_stop (EV_A_ (W)w);
}
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+
+void
+ev_signal_start (EV_P_ struct ev_signal *w)
+{
+#if EV_MULTIPLICITY
+ assert (("signal watchers are only supported in the default loop", loop == default_loop));
+#endif
+ if (ev_is_active (w))
+ return;
+
+ assert (("ev_signal_start called with illegal signal number", w->signum > 0));
+
+ ev_start (EV_A_ (W)w, 1);
+ array_needsize (signals, signalmax, w->signum, signals_init);
+ wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
+
+ if (!w->next)
+ {
+ struct sigaction sa;
+ sa.sa_handler = sighandler;
+ sigfillset (&sa.sa_mask);
+ sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
+ sigaction (w->signum, &sa, 0);
+ }
+}
+
+void
+ev_signal_stop (EV_P_ struct ev_signal *w)
+{
+ ev_clear_pending (EV_A_ (W)w);
+ if (!ev_is_active (w))
+ return;
+
+ wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
+ ev_stop (EV_A_ (W)w);
+
+ if (!signals [w->signum - 1].head)
+ signal (w->signum, SIG_DFL);
+}
+
void
ev_child_start (EV_P_ struct ev_child *w)
{
+#if EV_MULTIPLICITY
+ assert (("child watchers are only supported in the default loop", loop == default_loop));
+#endif
if (ev_is_active (w))
return;
}
}
-/*****************************************************************************/
-
-#if 0
-
-struct ev_io wio;
-
-static void
-sin_cb (struct ev_io *w, int revents)
-{
- fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
-}
-
-static void
-ocb (struct ev_timer *w, int revents)
-{
- //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
- ev_timer_stop (w);
- ev_timer_start (w);
-}
-
-static void
-scb (struct ev_signal *w, int revents)
-{
- fprintf (stderr, "signal %x,%d\n", revents, w->signum);
- ev_io_stop (&wio);
- ev_io_start (&wio);
-}
-
-static void
-gcb (struct ev_signal *w, int revents)
-{
- fprintf (stderr, "generic %x\n", revents);
-
-}
-
-int main (void)
-{
- ev_init (0);
-
- ev_io_init (&wio, sin_cb, 0, EV_READ);
- ev_io_start (&wio);
-
- struct ev_timer t[10000];
-
-#if 0
- int i;
- for (i = 0; i < 10000; ++i)
- {
- struct ev_timer *w = t + i;
- ev_watcher_init (w, ocb, i);
- ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
- ev_timer_start (w);
- if (drand48 () < 0.5)
- ev_timer_stop (w);
- }
-#endif
-
- struct ev_timer t1;
- ev_timer_init (&t1, ocb, 5, 10);
- ev_timer_start (&t1);
-
- struct ev_signal sig;
- ev_signal_init (&sig, scb, SIGQUIT);
- ev_signal_start (&sig);
-
- struct ev_check cw;
- ev_check_init (&cw, gcb);
- ev_check_start (&cw);
-
- struct ev_idle iw;
- ev_idle_init (&iw, gcb);
- ev_idle_start (&iw);
-
- ev_loop (0);
-
- return 0;
-}
-
-#endif
-
-
-
-
projects / software / libev.git / blobdiff