*/
#ifndef EV_STANDALONE
# include "config.h"
+
+# if HAVE_CLOCK_GETTIME
+# define EV_USE_MONOTONIC 1
+# define EV_USE_REALTIME 1
+# endif
+
+# if HAVE_SELECT && HAVE_SYS_SELECT_H
+# define EV_USE_SELECT 1
+# endif
+
+# if HAVE_POLL && HAVE_POLL_H
+# define EV_USE_POLL 1
+# endif
+
+# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
+# define EV_USE_EPOLL 1
+# endif
+
+# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
+# define EV_USE_KQUEUE 1
+# endif
+
#endif
#include <math.h>
# define EV_USE_SELECT 1
#endif
-#ifndef EV_USEV_POLL
-# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
+#ifndef EV_USE_POLL
+# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
#endif
#ifndef EV_USE_EPOLL
# define EV_USE_KQUEUE 0
#endif
+#ifndef EV_USE_WIN32
+# ifdef WIN32
+# define EV_USE_WIN32 1
+# else
+# define EV_USE_WIN32 0
+# endif
+#endif
+
#ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 1
#endif
typedef struct ev_watcher_list *WL;
typedef struct ev_watcher_time *WT;
+static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
+
+#if WIN32
+/* note: the comment below could not be substantiated, but what would I care */
+/* MSDN says this is required to handle SIGFPE */
+volatile double SIGFPE_REQ = 0.0f;
+#endif
+
/*****************************************************************************/
typedef struct
int events;
} ANPENDING;
-#ifdef EV_MULTIPLICITY
+#if EV_MULTIPLICITY
+
struct ev_loop
{
-# define VAR(name,decl) decl
+# define VAR(name,decl) decl;
# include "ev_vars.h"
};
+# undef VAR
+# include "ev_wrap.h"
+
#else
-# define VAR(name,decl) static decl
+
+# define VAR(name,decl) static decl;
# include "ev_vars.h"
+# undef VAR
+
#endif
-#undef VAR
/*****************************************************************************/
cur = newcnt; \
}
+#define array_slim(stem) \
+ if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
+ { \
+ stem ## max = array_roundsize (stem ## cnt >> 1); \
+ base = realloc (base, sizeof (*base) * (stem ## max)); \
+ fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
+ }
+
+#define array_free(stem, idx) \
+ free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
+
/*****************************************************************************/
static void
anfd->reify = 0;
- if (anfd->events != events)
- {
- method_modify (EV_A_ fd, anfd->events, events);
- anfd->events = events;
- }
+ method_modify (EV_A_ fd, anfd->events, events);
+ anfd->events = events;
}
fdchangecnt = 0;
static void
fd_enomem (EV_P)
{
- int fd = anfdmax;
+ int fd;
- while (fd--)
+ for (fd = anfdmax; fd--; )
if (anfds [fd].events)
{
close (fd);
}
}
+/* susually called after fork if method needs to re-arm all fds from scratch */
+static void
+fd_rearm_all (EV_P)
+{
+ int fd;
+
+ /* 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 (EV_A_ fd);
+ }
+}
+
/*****************************************************************************/
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];
+ ((W)heap [k])->active = k + 1;
k >>= 1;
}
- timers [k] = w;
- timers [k]->active = k + 1;
+ heap [k] = w;
+ ((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];
+ ((W)heap [k])->active = k + 1;
k = j;
}
- timers [k] = w;
- timers [k]->active = k + 1;
+ heap [k] = w;
+ ((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)
static void
sighandler (int signum)
{
+#if WIN32
+ signal (signum, sighandler);
+#endif
+
signals [signum - 1].gotsig = 1;
if (!gotsig)
#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 */
}
#ifndef WIN32
+static struct ev_child *childs [PID_HASHSIZE];
+static struct ev_signal childev;
+
#ifndef WCONTINUED
# define WCONTINUED 0
#endif
for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
if (w->pid == pid || !w->pid)
{
- w->priority = sw->priority; /* need to do it *now* */
- w->rpid = pid;
- w->rstatus = status;
+ ev_priority (w) = ev_priority (sw); /* need to do it *now* */
+ w->rpid = pid;
+ w->rstatus = status;
event (EV_A_ (W)w, EV_CHILD);
}
}
#if EV_USE_EPOLL
# include "ev_epoll.c"
#endif
-#if EV_USEV_POLL
+#if EV_USE_POLL
# include "ev_poll.c"
#endif
#if EV_USE_SELECT
return method;
}
-int
-ev_init (EV_P_ int methods)
+static void
+loop_init (EV_P_ int methods)
{
-#ifdef EV_MULTIPLICITY
- memset (loop, 0, sizeof (struct ev_loop));
-#endif
-
if (!method)
{
#if EV_USE_MONOTONIC
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;
method = 0;
+#if EV_USE_WIN32
+ if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
+#endif
#if EV_USE_KQUEUE
if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
#endif
#if EV_USE_EPOLL
if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
#endif
-#if EV_USEV_POLL
+#if EV_USE_POLL
if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
#endif
#if EV_USE_SELECT
if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
#endif
+ }
+}
+
+void
+loop_destroy (EV_P)
+{
+ int i;
+
+#if EV_USE_WIN32
+ if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
+#endif
+#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_USE_POLL
+ if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
+#endif
+#if EV_USE_SELECT
+ if (method == EVMETHOD_SELECT) select_destroy (EV_A);
+#endif
+
+ for (i = NUMPRI; i--; )
+ array_free (pending, [i]);
+
+ array_free (fdchange, );
+ array_free (timer, );
+ array_free (periodic, );
+ array_free (idle, );
+ array_free (prepare, );
+ array_free (check, );
+
+ 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_method (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
- if (method)
+ 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 (void)
{
-#if EV_USE_EPOLL
- if (method == EVMETHOD_EPOLL)
- epoll_postfork_child ();
+#if EV_MULTIPLICITY
+ struct ev_loop *loop = default_loop;
#endif
- ev_io_stop (&sigev);
+ loop_fork (EV_A);
+
+ ev_io_stop (EV_A_ &sigev);
close (sigpipe [0]);
close (sigpipe [1]);
pipe (sigpipe);
- siginit ();
+
+ ev_ref (EV_A); /* signal watcher */
+ siginit (EV_A);
}
/*****************************************************************************/
static void
timers_reify (EV_P)
{
- while (timercnt && timers [0]->at <= mn_now)
+ while (timercnt && ((WT)timers [0])->at <= mn_now)
{
struct ev_timer *w = timers [0];
+ assert (("inactive timer on timer heap detected", ev_is_active (w)));
+
/* first reschedule or stop timer */
if (w->repeat)
{
assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
- w->at = mn_now + w->repeat;
+ ((WT)w)->at = mn_now + w->repeat;
downheap ((WT *)timers, timercnt, 0);
}
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_reify (EV_P)
{
- while (periodiccnt && periodics [0]->at <= rt_now)
+ while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
{
struct ev_periodic *w = periodics [0];
+ assert (("inactive timer on periodic heap detected", ev_is_active (w)));
+
/* first reschedule or stop timer */
if (w->interval)
{
- w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
- assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
+ ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
+ assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
downheap ((WT *)periodics, periodiccnt, 0);
}
else
}
static void
-periodics_reschedule (EV_P_ ev_tstamp diff)
+periodics_reschedule (EV_P)
{
int i;
if (w->interval)
{
- ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
+ ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
if (fabs (diff) >= 1e-4)
{
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;
+ ((WT)timers [i])->at += rt_now - mn_now;
}
mn_now = rt_now;
if (timercnt)
{
- ev_tstamp to = timers [0]->at - mn_now + method_fudge;
+ ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
if (block > to) block = to;
}
if (periodiccnt)
{
- ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
+ ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
if (block > to) block = to;
}
if (ev_is_active (w))
return;
- w->at += mn_now;
+ ((WT)w)->at += mn_now;
assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
array_needsize (timers, timermax, timercnt, );
timers [timercnt - 1] = w;
upheap ((WT *)timers, timercnt - 1);
+
+ assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
}
void
if (!ev_is_active (w))
return;
- if (w->active < timercnt--)
+ assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
+
+ if (((W)w)->active < timercnt--)
{
- timers [w->active - 1] = timers [timercnt];
- downheap ((WT *)timers, timercnt, w->active - 1);
+ timers [((W)w)->active - 1] = timers [timercnt];
+ downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
}
- w->at = w->repeat;
+ ((WT)w)->at = w->repeat;
ev_stop (EV_A_ (W)w);
}
{
if (w->repeat)
{
- w->at = mn_now + w->repeat;
- downheap ((WT *)timers, timercnt, w->active - 1);
+ ((WT)w)->at = mn_now + w->repeat;
+ downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
}
else
ev_timer_stop (EV_A_ w);
/* this formula differs from the one in periodic_reify because we do not always round up */
if (w->interval)
- w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
+ ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
ev_start (EV_A_ (W)w, ++periodiccnt);
array_needsize (periodics, periodicmax, periodiccnt, );
periodics [periodiccnt - 1] = w;
upheap ((WT *)periodics, periodiccnt - 1);
+
+ assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
}
void
if (!ev_is_active (w))
return;
- if (w->active < periodiccnt--)
- {
- periodics [w->active - 1] = periodics [periodiccnt];
- downheap ((WT *)periodics, periodiccnt, w->active - 1);
- }
-
- 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);
+ assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
- if (!w->next)
+ if (((W)w)->active < periodiccnt--)
{
- 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);
+ periodics [((W)w)->active - 1] = periodics [periodiccnt];
+ downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
}
-}
-
-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
if (ev_is_active (w))
return;
- idles [w->active - 1] = idles [--idlecnt];
+ idles [((W)w)->active - 1] = idles [--idlecnt];
ev_stop (EV_A_ (W)w);
}
if (ev_is_active (w))
return;
- prepares [w->active - 1] = prepares [--preparecnt];
+ prepares [((W)w)->active - 1] = prepares [--preparecnt];
ev_stop (EV_A_ (W)w);
}
if (ev_is_active (w))
return;
- checks [w->active - 1] = checks [--checkcnt];
+ checks [((W)w)->active - 1] = checks [--checkcnt];
+ 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 (!((WL)w)->next)
+ {
+#if WIN32
+ signal (w->signum, sighandler);
+#else
+ 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);
+#endif
+ }
+}
+
+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