* 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:
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, 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 OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
*
- * * 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.
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
*/
#ifdef __cplusplus
# endif
# endif
+# ifndef EV_USE_NANOSLEEP
+# if HAVE_NANOSLEEP
+# define EV_USE_NANOSLEEP 1
+# else
+# define EV_USE_NANOSLEEP 0
+# endif
+# endif
+
# ifndef EV_USE_SELECT
# if HAVE_SELECT && HAVE_SYS_SELECT_H
# define EV_USE_SELECT 1
# define EV_USE_REALTIME 0
#endif
+#ifndef EV_USE_NANOSLEEP
+# define EV_USE_NANOSLEEP 0
+#endif
+
#ifndef EV_USE_SELECT
# define EV_USE_SELECT 1
#endif
# define EV_USE_REALTIME 0
#endif
-#if EV_SELECT_IS_WINSOCKET
-# include <winsock.h>
-#endif
-
#if !EV_STAT_ENABLE
+# undef EV_USE_INOTIFY
# define EV_USE_INOTIFY 0
#endif
+#if !EV_USE_NANOSLEEP
+# ifndef _WIN32
+# include <sys/select.h>
+# endif
+#endif
+
#if EV_USE_INOTIFY
# include <sys/inotify.h>
#endif
+#if EV_SELECT_IS_WINSOCKET
+# include <winsock.h>
+#endif
+
/**/
+/*
+ * This is used to avoid floating point rounding problems.
+ * It is added to ev_rt_now when scheduling periodics
+ * to ensure progress, time-wise, even when rounding
+ * errors are against us.
+ * This value is good at least till the year 4000.
+ * Better solutions welcome.
+ */
+#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
+
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
-/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
+/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
-#if __GNUC__ >= 3
+#if __GNUC__ >= 4
# define expect(expr,value) __builtin_expect ((expr),(value))
-# define inline_size static inline /* inline for codesize */
-# if EV_MINIMAL
-# define noinline __attribute__ ((noinline))
-# define inline_speed static noinline
-# else
-# define noinline
-# define inline_speed static inline
-# endif
+# define noinline __attribute__ ((noinline))
#else
# define expect(expr,value) (expr)
-# define inline_speed static
-# define inline_size static
# define noinline
+# if __STDC_VERSION__ < 199901L
+# define inline
+# endif
#endif
#define expect_false(expr) expect ((expr) != 0, 0)
#define expect_true(expr) expect ((expr) != 0, 1)
+#define inline_size static inline
+
+#if EV_MINIMAL
+# define inline_speed static noinline
+#else
+# define inline_speed static inline
+#endif
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
-#define ABSPRI(w) ((w)->priority - EV_MINPRI)
+#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
-#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
+#define EMPTY /* required for microsofts broken pseudo-c compiler */
#define EMPTY2(a,b) /* used to suppress some warnings */
typedef ev_watcher *W;
typedef ev_watcher_list *WL;
typedef ev_watcher_time *WT;
-static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
+#if EV_USE_MONOTONIC
+/* sig_atomic_t is used to avoid per-thread variables or locking but still */
+/* giving it a reasonably high chance of working on typical architetcures */
+static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
+#endif
#ifdef _WIN32
# include "ev_win32.c"
}
#endif
-#define array_roundsize(type,n) (((n) | 4) & ~3)
+void
+ev_sleep (ev_tstamp delay)
+{
+ if (delay > 0.)
+ {
+#if EV_USE_NANOSLEEP
+ struct timespec ts;
+
+ ts.tv_sec = (time_t)delay;
+ ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
+
+ nanosleep (&ts, 0);
+#elif defined(_WIN32)
+ Sleep (delay * 1e3);
+#else
+ struct timeval tv;
+
+ tv.tv_sec = (time_t)delay;
+ tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
+
+ select (0, 0, 0, 0, &tv);
+#endif
+ }
+}
+
+/*****************************************************************************/
+
+int inline_size
+array_nextsize (int elem, int cur, int cnt)
+{
+ int ncur = cur + 1;
+
+ do
+ ncur <<= 1;
+ while (cnt > ncur);
+
+ /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
+ if (elem * ncur > 4096)
+ {
+ ncur *= elem;
+ ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
+ ncur = ncur - sizeof (void *) * 4;
+ ncur /= elem;
+ }
+
+ return ncur;
+}
+
+static noinline void *
+array_realloc (int elem, void *base, int *cur, int cnt)
+{
+ *cur = array_nextsize (elem, *cur, cnt);
+ return ev_realloc (base, elem * *cur);
+}
#define array_needsize(type,base,cur,cnt,init) \
- if (expect_false ((cnt) > cur)) \
+ if (expect_false ((cnt) > (cur))) \
{ \
- int newcnt = cur; \
- do \
- { \
- newcnt = array_roundsize (type, newcnt << 1); \
- } \
- while ((cnt) > newcnt); \
- \
- base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
- init (base + cur, newcnt - cur); \
- cur = newcnt; \
+ int ocur_ = (cur); \
+ (base) = (type *)array_realloc \
+ (sizeof (type), (base), &(cur), (cnt)); \
+ init ((base) + (ocur_), (cur) - ocur_); \
}
+#if 0
#define array_slim(type,stem) \
if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
{ \
base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
}
+#endif
#define array_free(stem, idx) \
ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
ev_feed_event (EV_P_ void *w, int revents)
{
W w_ = (W)w;
+ int pri = ABSPRI (w_);
if (expect_false (w_->pending))
+ pendings [pri][w_->pending - 1].events |= revents;
+ else
{
- pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
- return;
+ w_->pending = ++pendingcnt [pri];
+ array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
+ pendings [pri][w_->pending - 1].w = w_;
+ pendings [pri][w_->pending - 1].events = revents;
}
-
- w_->pending = ++pendingcnt [ABSPRI (w_)];
- array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
- pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
- pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
}
-void inline_size
+void inline_speed
queue_events (EV_P_ W *events, int eventcnt, int type)
{
int i;
void
ev_feed_fd_event (EV_P_ int fd, int revents)
{
- fd_event (EV_A_ fd, revents);
+ if (fd >= 0 && fd < anfdmax)
+ fd_event (EV_A_ fd, revents);
}
void inline_size
ANFD *anfd = anfds + fd;
ev_io *w;
- int events = 0;
+ unsigned char events = 0;
for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
- events |= w->events;
+ events |= (unsigned char)w->events;
#if EV_SELECT_IS_WINSOCKET
if (events)
{
unsigned long argp;
- anfd->handle = _get_osfhandle (fd);
+ #ifdef EV_FD_TO_WIN32_HANDLE
+ anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
+ #else
+ anfd->handle = _get_osfhandle (fd);
+ #endif
assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
}
#endif
- anfd->reify = 0;
+ {
+ unsigned char o_events = anfd->events;
+ unsigned char o_reify = anfd->reify;
+
+ anfd->reify = 0;
+ anfd->events = events;
- backend_modify (EV_A_ fd, anfd->events, events);
- anfd->events = events;
+ if (o_events != events || o_reify & EV_IOFDSET)
+ backend_modify (EV_A_ fd, o_events, events);
+ }
}
fdchangecnt = 0;
}
void inline_size
-fd_change (EV_P_ int fd)
+fd_change (EV_P_ int fd, int flags)
{
- if (expect_false (anfds [fd].reify))
- return;
-
- anfds [fd].reify = 1;
+ unsigned char reify = anfds [fd].reify;
+ anfds [fd].reify |= flags;
- ++fdchangecnt;
- array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
- fdchanges [fdchangecnt - 1] = fd;
+ if (expect_true (!reify))
+ {
+ ++fdchangecnt;
+ array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
+ fdchanges [fdchangecnt - 1] = fd;
+ }
}
void inline_speed
if (anfds [fd].events)
{
anfds [fd].events = 0;
- fd_change (EV_A_ fd);
+ fd_change (EV_A_ fd, EV_IOFDSET | 1);
}
}
{
WT w = heap [k];
- while (k && heap [k >> 1]->at > w->at)
+ while (k)
{
- heap [k] = heap [k >> 1];
+ int p = (k - 1) >> 1;
+
+ if (heap [p]->at <= w->at)
+ break;
+
+ heap [k] = heap [p];
((W)heap [k])->active = k + 1;
- k >>= 1;
+ k = p;
}
heap [k] = w;
((W)heap [k])->active = k + 1;
-
}
void inline_speed
{
WT w = heap [k];
- while (k < (N >> 1))
+ for (;;)
{
- int j = k << 1;
+ int c = (k << 1) + 1;
+
+ if (c >= N)
+ break;
- if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
- ++j;
+ c += c + 1 < N && heap [c]->at > heap [c + 1]->at
+ ? 1 : 0;
- if (w->at <= heap [j]->at)
+ if (w->at <= heap [c]->at)
break;
- heap [k] = heap [j];
+ heap [k] = heap [c];
((W)heap [k])->active = k + 1;
- k = j;
+
+ k = c;
}
heap [k] = w;
ev_feed_signal_event (EV_A_ signum + 1);
}
-void inline_size
+void inline_speed
fd_intern (int fd)
{
#ifdef _WIN32
/*****************************************************************************/
-static ev_child *childs [EV_PID_HASHSIZE];
+static WL childs [EV_PID_HASHSIZE];
#ifndef _WIN32
for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
if (w->pid == pid || !w->pid)
{
- ev_priority (w) = ev_priority (sw); /* need to do it *now* */
- w->rpid = pid;
- w->rstatus = status;
+ ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
+ w->rpid = pid;
+ w->rstatus = status;
ev_feed_event (EV_A_ (W)w, EV_CHILD);
}
}
unsigned int
ev_embeddable_backends (void)
{
- return EVBACKEND_EPOLL
- | EVBACKEND_KQUEUE
- | EVBACKEND_PORT;
+ int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
+
+ /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
+ /* please fix it and tell me how to detect the fix */
+ flags &= ~EVBACKEND_EPOLL;
+
+ return flags;
}
unsigned int
return backend;
}
+unsigned int
+ev_loop_count (EV_P)
+{
+ return loop_count;
+}
+
+void
+ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
+{
+ io_blocktime = interval;
+}
+
+void
+ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
+{
+ timeout_blocktime = interval;
+}
+
static void noinline
loop_init (EV_P_ unsigned int flags)
{
now_floor = mn_now;
rtmn_diff = ev_rt_now - mn_now;
+ io_blocktime = 0.;
+ timeout_blocktime = 0.;
+
+ /* pid check not overridable via env */
+#ifndef _WIN32
+ if (flags & EVFLAG_FORKCHECK)
+ curpid = getpid ();
+#endif
+
if (!(flags & EVFLAG_NOENV)
&& !enable_secure ()
&& getenv ("LIBEV_FLAGS"))
#endif
for (i = NUMPRI; i--; )
- array_free (pending, [i]);
+ {
+ array_free (pending, [i]);
+#if EV_IDLE_ENABLE
+ array_free (idle, [i]);
+#endif
+ }
+
+ ev_free (anfds); anfdmax = 0;
/* have to use the microsoft-never-gets-it-right macro */
- array_free (fdchange, EMPTY0);
- array_free (timer, EMPTY0);
+ array_free (fdchange, EMPTY);
+ array_free (timer, EMPTY);
#if EV_PERIODIC_ENABLE
- array_free (periodic, EMPTY0);
+ array_free (periodic, EMPTY);
#endif
- array_free (idle, EMPTY0);
- array_free (prepare, EMPTY0);
- array_free (check, EMPTY0);
+#if EV_FORK_ENABLE
+ array_free (fork, EMPTY);
+#endif
+ array_free (prepare, EMPTY);
+ array_free (check, EMPTY);
backend = 0;
}
/*****************************************************************************/
-int inline_size
-any_pending (EV_P)
+void
+ev_invoke (EV_P_ void *w, int revents)
{
- int pri;
-
- for (pri = NUMPRI; pri--; )
- if (pendingcnt [pri])
- return 1;
-
- return 0;
+ EV_CB_INVOKE ((W)w, revents);
}
void inline_speed
{
while (timercnt && ((WT)timers [0])->at <= mn_now)
{
- ev_timer *w = timers [0];
+ ev_timer *w = (ev_timer *)timers [0];
- /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
+ assert (("inactive timer on timer heap detected", ev_is_active (w)));
/* first reschedule or stop timer */
if (w->repeat)
if (((WT)w)->at < mn_now)
((WT)w)->at = mn_now;
- downheap ((WT *)timers, timercnt, 0);
+ downheap (timers, timercnt, 0);
}
else
ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
{
while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
{
- ev_periodic *w = periodics [0];
+ ev_periodic *w = (ev_periodic *)periodics [0];
/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
/* first reschedule or stop timer */
if (w->reschedule_cb)
{
- ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
+ ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
- downheap ((WT *)periodics, periodiccnt, 0);
+ downheap (periodics, periodiccnt, 0);
}
else if (w->interval)
{
- ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
+ ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
+ if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
- downheap ((WT *)periodics, periodiccnt, 0);
+ downheap (periodics, periodiccnt, 0);
}
else
ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
/* adjust periodics after time jump */
for (i = 0; i < periodiccnt; ++i)
{
- ev_periodic *w = periodics [i];
+ ev_periodic *w = (ev_periodic *)periodics [i];
if (w->reschedule_cb)
((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
else if (w->interval)
- ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
+ ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
}
/* now rebuild the heap */
for (i = periodiccnt >> 1; i--; )
- downheap ((WT *)periodics, periodiccnt, i);
+ downheap (periodics, periodiccnt, i);
}
#endif
-int inline_size
-time_update_monotonic (EV_P)
+#if EV_IDLE_ENABLE
+void inline_size
+idle_reify (EV_P)
{
- mn_now = get_clock ();
-
- if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
+ if (expect_false (idleall))
{
- ev_rt_now = rtmn_diff + mn_now;
- return 0;
- }
- else
- {
- now_floor = mn_now;
- ev_rt_now = ev_time ();
- return 1;
+ int pri;
+
+ for (pri = NUMPRI; pri--; )
+ {
+ if (pendingcnt [pri])
+ break;
+
+ if (idlecnt [pri])
+ {
+ queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
+ break;
+ }
+ }
}
}
+#endif
-void inline_size
-time_update (EV_P)
+void inline_speed
+time_update (EV_P_ ev_tstamp max_block)
{
int i;
#if EV_USE_MONOTONIC
if (expect_true (have_monotonic))
{
- if (time_update_monotonic (EV_A))
+ ev_tstamp odiff = rtmn_diff;
+
+ mn_now = get_clock ();
+
+ /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
+ /* interpolate in the meantime */
+ if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
{
- ev_tstamp odiff = rtmn_diff;
-
- /* loop a few times, before making important decisions.
- * on the choice of "4": one iteration isn't enough,
- * in case we get preempted during the calls to
- * ev_time and get_clock. a second call is almost guaranteed
- * to succeed in that case, though. and looping a few more times
- * doesn't hurt either as we only do this on time-jumps or
- * in the unlikely event of having been preempted here.
- */
- for (i = 4; --i; )
- {
- rtmn_diff = ev_rt_now - mn_now;
+ ev_rt_now = rtmn_diff + mn_now;
+ return;
+ }
+
+ now_floor = mn_now;
+ ev_rt_now = ev_time ();
- if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
- return; /* all is well */
+ /* loop a few times, before making important decisions.
+ * on the choice of "4": one iteration isn't enough,
+ * in case we get preempted during the calls to
+ * ev_time and get_clock. a second call is almost guaranteed
+ * to succeed in that case, though. and looping a few more times
+ * doesn't hurt either as we only do this on time-jumps or
+ * in the unlikely event of having been preempted here.
+ */
+ for (i = 4; --i; )
+ {
+ rtmn_diff = ev_rt_now - mn_now;
- ev_rt_now = ev_time ();
- mn_now = get_clock ();
- now_floor = mn_now;
- }
+ if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
+ return; /* all is well */
+
+ ev_rt_now = ev_time ();
+ mn_now = get_clock ();
+ now_floor = mn_now;
+ }
# if EV_PERIODIC_ENABLE
- periodics_reschedule (EV_A);
+ periodics_reschedule (EV_A);
# endif
- /* no timer adjustment, as the monotonic clock doesn't jump */
- /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
- }
+ /* no timer adjustment, as the monotonic clock doesn't jump */
+ /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
}
else
#endif
{
ev_rt_now = ev_time ();
- if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
+ if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
{
#if EV_PERIODIC_ENABLE
periodics_reschedule (EV_A);
#endif
-
/* adjust timers. this is easy, as the offset is the same for all of them */
for (i = 0; i < timercnt; ++i)
((WT)timers [i])->at += ev_rt_now - mn_now;
? EVUNLOOP_ONE
: EVUNLOOP_CANCEL;
- while (activecnt)
+ call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
+
+ do
{
+#ifndef _WIN32
+ if (expect_false (curpid)) /* penalise the forking check even more */
+ if (expect_false (getpid () != curpid))
+ {
+ curpid = getpid ();
+ postfork = 1;
+ }
+#endif
+
#if EV_FORK_ENABLE
/* we might have forked, so queue fork handlers */
if (expect_false (postfork))
}
#endif
- /* queue check watchers (and execute them) */
+ /* queue prepare watchers (and execute them) */
if (expect_false (preparecnt))
{
queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
call_pending (EV_A);
}
+ if (expect_false (!activecnt))
+ break;
+
/* we might have forked, so reify kernel state if necessary */
if (expect_false (postfork))
loop_fork (EV_A);
/* calculate blocking time */
{
- ev_tstamp block;
+ ev_tstamp waittime = 0.;
+ ev_tstamp sleeptime = 0.;
- if (flags & EVLOOP_NONBLOCK || idlecnt)
- block = 0.; /* do not block at all */
- else
+ if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
{
/* update time to cancel out callback processing overhead */
-#if EV_USE_MONOTONIC
- if (expect_true (have_monotonic))
- time_update_monotonic (EV_A);
- else
-#endif
- {
- ev_rt_now = ev_time ();
- mn_now = ev_rt_now;
- }
+ time_update (EV_A_ 1e100);
- block = MAX_BLOCKTIME;
+ waittime = MAX_BLOCKTIME;
if (timercnt)
{
ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
- if (block > to) block = to;
+ if (waittime > to) waittime = to;
}
#if EV_PERIODIC_ENABLE
if (periodiccnt)
{
ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
- if (block > to) block = to;
+ if (waittime > to) waittime = to;
}
#endif
- if (expect_false (block < 0.)) block = 0.;
+ if (expect_false (waittime < timeout_blocktime))
+ waittime = timeout_blocktime;
+
+ sleeptime = waittime - backend_fudge;
+
+ if (expect_true (sleeptime > io_blocktime))
+ sleeptime = io_blocktime;
+
+ if (sleeptime)
+ {
+ ev_sleep (sleeptime);
+ waittime -= sleeptime;
+ }
}
- backend_poll (EV_A_ block);
- }
+ ++loop_count;
+ backend_poll (EV_A_ waittime);
- /* update ev_rt_now, do magic */
- time_update (EV_A);
+ /* update ev_rt_now, do magic */
+ time_update (EV_A_ waittime + sleeptime);
+ }
/* queue pending timers and reschedule them */
timers_reify (EV_A); /* relative timers called last */
periodics_reify (EV_A); /* absolute timers called first */
#endif
+#if EV_IDLE_ENABLE
/* queue idle watchers unless other events are pending */
- if (idlecnt && !any_pending (EV_A))
- queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
+ idle_reify (EV_A);
+#endif
/* queue check watchers, to be executed first */
if (expect_false (checkcnt))
call_pending (EV_A);
- if (expect_false (loop_done))
- break;
}
+ while (expect_true (activecnt && !loop_done));
if (loop_done == EVUNLOOP_ONE)
loop_done = EVUNLOOP_CANCEL;
}
void inline_speed
-ev_clear_pending (EV_P_ W w)
+clear_pending (EV_P_ W w)
{
if (w->pending)
{
}
}
+int
+ev_clear_pending (EV_P_ void *w)
+{
+ W w_ = (W)w;
+ int pending = w_->pending;
+
+ if (expect_true (pending))
+ {
+ ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
+ w_->pending = 0;
+ p->w = 0;
+ return p->events;
+ }
+ else
+ return 0;
+}
+
+void inline_size
+pri_adjust (EV_P_ W w)
+{
+ int pri = w->priority;
+ pri = pri < EV_MINPRI ? EV_MINPRI : pri;
+ pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
+ w->priority = pri;
+}
+
void inline_speed
ev_start (EV_P_ W w, int active)
{
- if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
- if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
-
+ pri_adjust (EV_A_ w);
w->active = active;
ev_ref (EV_A);
}
/*****************************************************************************/
-void
+void noinline
ev_io_start (EV_P_ ev_io *w)
{
int fd = w->fd;
ev_start (EV_A_ (W)w, 1);
array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
- wlist_add ((WL *)&anfds[fd].head, (WL)w);
+ wlist_add (&anfds[fd].head, (WL)w);
- fd_change (EV_A_ fd);
+ fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
+ w->events &= ~EV_IOFDSET;
}
-void
+void noinline
ev_io_stop (EV_P_ ev_io *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
- wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
+ wlist_del (&anfds[w->fd].head, (WL)w);
ev_stop (EV_A_ (W)w);
- fd_change (EV_A_ w->fd);
+ fd_change (EV_A_ w->fd, 1);
}
-void
+void noinline
ev_timer_start (EV_P_ ev_timer *w)
{
if (expect_false (ev_is_active (w)))
assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
ev_start (EV_A_ (W)w, ++timercnt);
- array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
- timers [timercnt - 1] = w;
- upheap ((WT *)timers, timercnt - 1);
+ array_needsize (WT, timers, timermax, timercnt, EMPTY2);
+ timers [timercnt - 1] = (WT)w;
+ upheap (timers, timercnt - 1);
/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
}
-void
+void noinline
ev_timer_stop (EV_P_ ev_timer *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
- assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
+ assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
{
int active = ((W)w)->active;
if (expect_true (--active < --timercnt))
{
timers [active] = timers [timercnt];
- adjustheap ((WT *)timers, timercnt, active);
+ adjustheap (timers, timercnt, active);
}
}
ev_stop (EV_A_ (W)w);
}
-void
+void noinline
ev_timer_again (EV_P_ ev_timer *w)
{
if (ev_is_active (w))
if (w->repeat)
{
((WT)w)->at = mn_now + w->repeat;
- adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
+ adjustheap (timers, timercnt, ((W)w)->active - 1);
}
else
ev_timer_stop (EV_A_ w);
}
#if EV_PERIODIC_ENABLE
-void
+void noinline
ev_periodic_start (EV_P_ ev_periodic *w)
{
if (expect_false (ev_is_active (w)))
{
assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
/* this formula differs from the one in periodic_reify because we do not always round up */
- ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
+ ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
}
+ else
+ ((WT)w)->at = w->offset;
ev_start (EV_A_ (W)w, ++periodiccnt);
- array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
- periodics [periodiccnt - 1] = w;
- upheap ((WT *)periodics, periodiccnt - 1);
+ array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
+ periodics [periodiccnt - 1] = (WT)w;
+ upheap (periodics, periodiccnt - 1);
/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
}
-void
+void noinline
ev_periodic_stop (EV_P_ ev_periodic *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
- assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
+ assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
{
int active = ((W)w)->active;
if (expect_true (--active < --periodiccnt))
{
periodics [active] = periodics [periodiccnt];
- adjustheap ((WT *)periodics, periodiccnt, active);
+ adjustheap (periodics, periodiccnt, active);
}
}
ev_stop (EV_A_ (W)w);
}
-void
+void noinline
ev_periodic_again (EV_P_ ev_periodic *w)
{
/* TODO: use adjustheap and recalculation */
# define SA_RESTART 0
#endif
-void
+void noinline
ev_signal_start (EV_P_ ev_signal *w)
{
#if EV_MULTIPLICITY
assert (("ev_signal_start called with illegal signal number", w->signum > 0));
+ {
+#ifndef _WIN32
+ sigset_t full, prev;
+ sigfillset (&full);
+ sigprocmask (SIG_SETMASK, &full, &prev);
+#endif
+
+ array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
+
+#ifndef _WIN32
+ sigprocmask (SIG_SETMASK, &prev, 0);
+#endif
+ }
+
ev_start (EV_A_ (W)w, 1);
- array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
- wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
+ wlist_add (&signals [w->signum - 1].head, (WL)w);
if (!((WL)w)->next)
{
}
}
-void
+void noinline
ev_signal_stop (EV_P_ ev_signal *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
- wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
+ wlist_del (&signals [w->signum - 1].head, (WL)w);
ev_stop (EV_A_ (W)w);
if (!signals [w->signum - 1].head)
return;
ev_start (EV_A_ (W)w, 1);
- wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
+ wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
}
void
ev_child_stop (EV_P_ ev_child *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
- wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
+ wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
ev_stop (EV_A_ (W)w);
}
void
ev_stat_stop (EV_P_ ev_stat *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
}
#endif
+#if EV_IDLE_ENABLE
void
ev_idle_start (EV_P_ ev_idle *w)
{
if (expect_false (ev_is_active (w)))
return;
- ev_start (EV_A_ (W)w, ++idlecnt);
- array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
- idles [idlecnt - 1] = w;
+ pri_adjust (EV_A_ (W)w);
+
+ {
+ int active = ++idlecnt [ABSPRI (w)];
+
+ ++idleall;
+ ev_start (EV_A_ (W)w, active);
+
+ array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
+ idles [ABSPRI (w)][active - 1] = w;
+ }
}
void
ev_idle_stop (EV_P_ ev_idle *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
{
int active = ((W)w)->active;
- idles [active - 1] = idles [--idlecnt];
- ((W)idles [active - 1])->active = active;
- }
- ev_stop (EV_A_ (W)w);
+ idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
+ ((W)idles [ABSPRI (w)][active - 1])->active = active;
+
+ ev_stop (EV_A_ (W)w);
+ --idleall;
+ }
}
+#endif
void
ev_prepare_start (EV_P_ ev_prepare *w)
void
ev_prepare_stop (EV_P_ ev_prepare *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
void
ev_check_stop (EV_P_ ev_check *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
void noinline
ev_embed_sweep (EV_P_ ev_embed *w)
{
- ev_loop (w->loop, EVLOOP_NONBLOCK);
+ ev_loop (w->other, EVLOOP_NONBLOCK);
}
static void
-embed_cb (EV_P_ ev_io *io, int revents)
+embed_io_cb (EV_P_ ev_io *io, int revents)
{
ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
if (ev_cb (w))
ev_feed_event (EV_A_ (W)w, EV_EMBED);
else
- ev_embed_sweep (loop, w);
+ ev_loop (w->other, EVLOOP_NONBLOCK);
+}
+
+static void
+embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
+{
+ ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
+
+ {
+ struct ev_loop *loop = w->other;
+
+ while (fdchangecnt)
+ {
+ fd_reify (EV_A);
+ ev_loop (EV_A_ EVLOOP_NONBLOCK);
+ }
+ }
}
+#if 0
+static void
+embed_idle_cb (EV_P_ ev_idle *idle, int revents)
+{
+ ev_idle_stop (EV_A_ idle);
+}
+#endif
+
void
ev_embed_start (EV_P_ ev_embed *w)
{
return;
{
- struct ev_loop *loop = w->loop;
+ struct ev_loop *loop = w->other;
assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
- ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
+ ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
}
ev_set_priority (&w->io, ev_priority (w));
ev_io_start (EV_A_ &w->io);
+ ev_prepare_init (&w->prepare, embed_prepare_cb);
+ ev_set_priority (&w->prepare, EV_MINPRI);
+ ev_prepare_start (EV_A_ &w->prepare);
+
+ /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
+
ev_start (EV_A_ (W)w, 1);
}
void
ev_embed_stop (EV_P_ ev_embed *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
ev_io_stop (EV_A_ &w->io);
+ ev_prepare_stop (EV_A_ &w->prepare);
ev_stop (EV_A_ (W)w);
}
void
ev_fork_stop (EV_P_ ev_fork *w)
{
- ev_clear_pending (EV_A_ (W)w);
+ clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
}
}
+#if EV_MULTIPLICITY
+ #include "ev_wrap.h"
+#endif
+
#ifdef __cplusplus
}
#endif
projects / software / libev.git / blobdiff