# endif
# endif
+# ifndef EV_USE_INOTIFY
+# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
+# define EV_USE_INOTIFY 1
+# else
+# define EV_USE_INOTIFY 0
+# endif
+# endif
+
#endif
#include <math.h>
#include <signal.h>
+#ifdef EV_H
+# include EV_H
+#else
+# include "ev.h"
+#endif
+
#ifndef _WIN32
-# include <unistd.h>
# include <sys/time.h>
# include <sys/wait.h>
+# include <unistd.h>
#else
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# define EV_USE_PORT 0
#endif
+#ifndef EV_USE_INOTIFY
+# define EV_USE_INOTIFY 0
+#endif
+
+#ifndef EV_PID_HASHSIZE
+# if EV_MINIMAL
+# define EV_PID_HASHSIZE 1
+# else
+# define EV_PID_HASHSIZE 16
+# endif
+#endif
+
+#ifndef EV_INOTIFY_HASHSIZE
+# if EV_MINIMAL
+# define EV_INOTIFY_HASHSIZE 1
+# else
+# define EV_INOTIFY_HASHSIZE 16
+# endif
+#endif
+
/**/
#ifndef CLOCK_MONOTONIC
# include <winsock.h>
#endif
+#if !EV_STAT_ENABLE
+# define EV_USE_INOTIFY 0
+#endif
+
+#if EV_USE_INOTIFY
+# include <sys/inotify.h>
+#endif
+
/**/
#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 PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
-#ifdef EV_H
-# include EV_H
-#else
-# include "ev.h"
-#endif
-
#if __GNUC__ >= 3
# define expect(expr,value) __builtin_expect ((expr),(value))
-# define inline static inline
+# define noinline __attribute__ ((noinline))
#else
# define expect(expr,value) (expr)
-# define inline 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;
static void (*syserr_cb)(const char *msg);
-void ev_set_syserr_cb (void (*cb)(const char *msg))
+void
+ev_set_syserr_cb (void (*cb)(const char *msg))
{
syserr_cb = cb;
}
-static void
+static void noinline
syserr (const char *msg)
{
if (!msg)
static void *(*alloc)(void *ptr, long size);
-void ev_set_allocator (void *(*cb)(void *ptr, long size))
+void
+ev_set_allocator (void *(*cb)(void *ptr, long size))
{
alloc = cb;
}
-static void *
+inline_speed void *
ev_realloc (void *ptr, long size)
{
ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
int events;
} ANPENDING;
+#if EV_USE_INOTIFY
+typedef struct
+{
+ WL head;
+} ANFS;
+#endif
+
#if EV_MULTIPLICITY
struct ev_loop
#endif
}
-inline ev_tstamp
+ev_tstamp inline_size
get_clock (void)
{
#if EV_USE_MONOTONIC
}
#endif
-#define array_roundsize(type,n) (((n) | 4) & ~3)
+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;
+}
+
+inline_speed 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;
/*****************************************************************************/
-static void
-anfds_init (ANFD *base, int count)
-{
- while (count--)
- {
- base->head = 0;
- base->events = EV_NONE;
- base->reify = 0;
-
- ++base;
- }
-}
-
-void
+void noinline
ev_feed_event (EV_P_ void *w, int revents)
{
W w_ = (W)w;
pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
}
-static void
+void inline_size
queue_events (EV_P_ W *events, int eventcnt, int type)
{
int i;
ev_feed_event (EV_A_ events [i], type);
}
-inline void
+/*****************************************************************************/
+
+void inline_size
+anfds_init (ANFD *base, int count)
+{
+ while (count--)
+ {
+ base->head = 0;
+ base->events = EV_NONE;
+ base->reify = 0;
+
+ ++base;
+ }
+}
+
+void inline_speed
fd_event (EV_P_ int fd, int revents)
{
ANFD *anfd = anfds + fd;
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);
}
-/*****************************************************************************/
-
-inline void
+void inline_size
fd_reify (EV_P)
{
int i;
fdchangecnt = 0;
}
-static void
+void inline_size
fd_change (EV_P_ int fd)
{
if (expect_false (anfds [fd].reify))
fdchanges [fdchangecnt - 1] = fd;
}
-static void
+void inline_speed
fd_kill (EV_P_ int fd)
{
ev_io *w;
}
}
-inline int
+int inline_size
fd_valid (int fd)
{
#ifdef _WIN32
}
/* called on EBADF to verify fds */
-static void
+static void noinline
fd_ebadf (EV_P)
{
int fd;
}
/* called on ENOMEM in select/poll to kill some fds and retry */
-static void
+static void noinline
fd_enomem (EV_P)
{
int fd;
}
/* usually called after fork if backend needs to re-arm all fds from scratch */
-static void
+static void noinline
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)
{
/*****************************************************************************/
-static void
+void inline_speed
upheap (WT *heap, int k)
{
WT w = heap [k];
}
-static void
+void inline_speed
downheap (WT *heap, int N, int k)
{
WT w = heap [k];
((W)heap [k])->active = k + 1;
}
-inline void
+void inline_size
adjustheap (WT *heap, int N, int k)
{
upheap (heap, k);
static sig_atomic_t volatile gotsig;
static ev_io sigev;
-static void
+void inline_size
signals_init (ANSIG *base, int count)
{
while (count--)
}
}
-void
+void noinline
ev_feed_signal_event (EV_P_ int signum)
{
WL w;
ev_feed_signal_event (EV_A_ signum + 1);
}
-static void
+void inline_size
fd_intern (int fd)
{
#ifdef _WIN32
#endif
}
-static void
+static void noinline
siginit (EV_P)
{
fd_intern (sigpipe [0]);
/*****************************************************************************/
-static ev_child *childs [PID_HASHSIZE];
+static ev_child *childs [EV_PID_HASHSIZE];
#ifndef _WIN32
static ev_signal childev;
-#ifndef WCONTINUED
-# define WCONTINUED 0
-#endif
-
-static void
+void inline_speed
child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
{
ev_child *w;
- for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
+ 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);
}
}
+#ifndef WCONTINUED
+# define WCONTINUED 0
+#endif
+
static void
childcb (EV_P_ ev_signal *sw, int revents)
{
int pid, status;
- if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
- {
- /* make sure we are called again until all childs have been reaped */
- /* we need to do it this way so that the callback gets called before we continue */
- ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
+ /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
+ if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
+ if (!WCONTINUED
+ || errno != EINVAL
+ || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
+ return;
- child_reap (EV_A_ sw, pid, pid, status);
- child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
- }
+ /* make sure we are called again until all childs have been reaped */
+ /* we need to do it this way so that the callback gets called before we continue */
+ ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
+
+ child_reap (EV_A_ sw, pid, pid, status);
+ if (EV_PID_HASHSIZE > 1)
+ child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
}
#endif
}
/* return true if we are running with elevated privileges and should ignore env variables */
-static int
+int inline_size
enable_secure (void)
{
#ifdef _WIN32
return backend;
}
-static void
+unsigned int
+ev_loop_count (EV_P)
+{
+ return loop_count;
+}
+
+static void noinline
loop_init (EV_P_ unsigned int flags)
{
if (!backend)
now_floor = mn_now;
rtmn_diff = ev_rt_now - mn_now;
+ /* pid check not overridable via env */
+#ifndef _WIN32
+ if (flags & EVFLAG_FORKCHECK)
+ curpid = getpid ();
+#endif
+
if (!(flags & EVFLAG_NOENV)
&& !enable_secure ()
&& getenv ("LIBEV_FLAGS"))
flags |= ev_recommended_backends ();
backend = 0;
+ backend_fd = -1;
+#if EV_USE_INOTIFY
+ fs_fd = -2;
+#endif
+
#if EV_USE_PORT
if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
#endif
}
}
-static void
+static void noinline
loop_destroy (EV_P)
{
int i;
+#if EV_USE_INOTIFY
+ if (fs_fd >= 0)
+ close (fs_fd);
+#endif
+
+ if (backend_fd >= 0)
+ close (backend_fd);
+
#if EV_USE_PORT
if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
#endif
#endif
for (i = NUMPRI; i--; )
- array_free (pending, [i]);
+ {
+ array_free (pending, [i]);
+#if EV_IDLE_ENABLE
+ array_free (idle, [i]);
+#endif
+ }
/* have to use the microsoft-never-gets-it-right macro */
- array_free (fdchange, EMPTY0);
- array_free (timer, EMPTY0);
-#if EV_PERIODICS
- array_free (periodic, EMPTY0);
+ array_free (fdchange, EMPTY);
+ array_free (timer, EMPTY);
+#if EV_PERIODIC_ENABLE
+ array_free (periodic, EMPTY);
#endif
- array_free (idle, EMPTY0);
- array_free (prepare, EMPTY0);
- array_free (check, EMPTY0);
+ array_free (prepare, EMPTY);
+ array_free (check, EMPTY);
backend = 0;
}
-static void
+void inline_size infy_fork (EV_P);
+
+void inline_size
loop_fork (EV_P)
{
#if EV_USE_PORT
#if EV_USE_EPOLL
if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
#endif
+#if EV_USE_INOTIFY
+ infy_fork (EV_A);
+#endif
if (ev_is_active (&sigev))
{
/*****************************************************************************/
-static int
-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);
}
-inline void
+void inline_speed
call_pending (EV_P)
{
int pri;
if (expect_true (p->w))
{
+ /*assert (("non-pending watcher on pending list", p->w->pending));*/
+
p->w->pending = 0;
EV_CB_INVOKE (p->w, p->events);
}
}
}
-inline void
+void inline_size
timers_reify (EV_P)
{
while (timercnt && ((WT)timers [0])->at <= mn_now)
{
ev_timer *w = 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 EV_PERIODICS
-inline void
+#if EV_PERIODIC_ENABLE
+void inline_size
periodics_reify (EV_P)
{
while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
{
ev_periodic *w = periodics [0];
- assert (("inactive timer on periodic heap detected", ev_is_active (w)));
+ /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
/* first reschedule or stop timer */
if (w->reschedule_cb)
}
}
-static void
+static void noinline
periodics_reschedule (EV_P)
{
int i;
}
#endif
-inline int
+#if EV_IDLE_ENABLE
+void inline_size
+idle_reify (EV_P)
+{
+ if (expect_false (idleall))
+ {
+ 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
+
+int inline_size
time_update_monotonic (EV_P)
{
mn_now = get_clock ();
}
}
-inline void
+void inline_size
time_update (EV_P)
{
int i;
{
ev_tstamp odiff = rtmn_diff;
- for (i = 4; --i; ) /* loop a few times, before making important decisions */
+ /* 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;
now_floor = mn_now;
}
-# if EV_PERIODICS
+# if EV_PERIODIC_ENABLE
periodics_reschedule (EV_A);
# endif
/* no timer adjustment, as the monotonic clock doesn't jump */
if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
{
-#if EV_PERIODICS
+#if EV_PERIODIC_ENABLE
periodics_reschedule (EV_A);
#endif
- /* adjust timers. this is easy, as the offset is the same for all */
+ /* 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
{
- /* queue check watchers (and execute them) */
+#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))
+ if (forkcnt)
+ {
+ queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
+ call_pending (EV_A);
+ }
+#endif
+
+ /* 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 */
{
- double block;
+ ev_tstamp block;
- if (flags & EVLOOP_NONBLOCK || idlecnt)
+ if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
block = 0.; /* do not block at all */
else
{
if (block > to) block = to;
}
-#if EV_PERIODICS
+#if EV_PERIODIC_ENABLE
if (periodiccnt)
{
ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
if (expect_false (block < 0.)) block = 0.;
}
+ ++loop_count;
backend_poll (EV_A_ block);
}
/* queue pending timers and reschedule them */
timers_reify (EV_A); /* relative timers called last */
-#if EV_PERIODICS
+#if EV_PERIODIC_ENABLE
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;
/*****************************************************************************/
-inline void
+void inline_size
wlist_add (WL *head, WL elem)
{
elem->next = *head;
*head = elem;
}
-inline void
+void inline_size
wlist_del (WL *head, WL elem)
{
while (*head)
}
}
-inline void
-ev_clear_pending (EV_P_ W w)
+void inline_speed
+clear_pending (EV_P_ W w)
{
if (w->pending)
{
}
}
-inline void
-ev_start (EV_P_ W w, int active)
+int
+ev_clear_pending (EV_P_ void *w)
{
- if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
- if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
+ W w_ = (W)w;
+ int pending = w_->pending;
+
+ if (!pending)
+ return 0;
+
+ w_->pending = 0;
+ ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
+ p->w = 0;
+ return p->events;
+}
+
+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)
+{
+ pri_adjust (EV_A_ w);
w->active = active;
ev_ref (EV_A);
}
-inline void
+void inline_size
ev_stop (EV_P_ W w)
{
ev_unref (EV_A);
void
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;
timers [timercnt - 1] = w;
upheap ((WT *)timers, timercnt - 1);
- assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
+ /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
}
void
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));
- if (expect_true (((W)w)->active < timercnt--))
- {
- timers [((W)w)->active - 1] = timers [timercnt];
- adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
- }
+ {
+ int active = ((W)w)->active;
+
+ if (expect_true (--active < --timercnt))
+ {
+ timers [active] = timers [timercnt];
+ adjustheap ((WT *)timers, timercnt, active);
+ }
+ }
((WT)w)->at -= mn_now;
}
}
-#if EV_PERIODICS
+#if EV_PERIODIC_ENABLE
void
ev_periodic_start (EV_P_ ev_periodic *w)
{
periodics [periodiccnt - 1] = w;
upheap ((WT *)periodics, periodiccnt - 1);
- assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
+ /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
}
void
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));
- if (expect_true (((W)w)->active < periodiccnt--))
- {
- periodics [((W)w)->active - 1] = periodics [periodiccnt];
- adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
- }
+ {
+ int active = ((W)w)->active;
+
+ if (expect_true (--active < --periodiccnt))
+ {
+ periodics [active] = periodics [periodiccnt];
+ adjustheap ((WT *)periodics, periodiccnt, active);
+ }
+ }
ev_stop (EV_A_ (W)w);
}
}
#endif
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+
void
-ev_idle_start (EV_P_ ev_idle *w)
+ev_signal_start (EV_P_ ev_signal *w)
{
+#if EV_MULTIPLICITY
+ assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
+#endif
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;
+ assert (("ev_signal_start called with illegal signal number", w->signum > 0));
+
+ 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);
+
+ 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_idle_stop (EV_P_ ev_idle *w)
+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;
- idles [((W)w)->active - 1] = idles [--idlecnt];
+ 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_prepare_start (EV_P_ ev_prepare *w)
+ev_child_start (EV_P_ ev_child *w)
{
+#if EV_MULTIPLICITY
+ assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
+#endif
if (expect_false (ev_is_active (w)))
return;
- ev_start (EV_A_ (W)w, ++preparecnt);
- array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
- prepares [preparecnt - 1] = w;
+ ev_start (EV_A_ (W)w, 1);
+ wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
}
void
-ev_prepare_stop (EV_P_ ev_prepare *w)
+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;
- prepares [((W)w)->active - 1] = prepares [--preparecnt];
+ wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
ev_stop (EV_A_ (W)w);
}
+#if EV_STAT_ENABLE
+
+# ifdef _WIN32
+# undef lstat
+# define lstat(a,b) _stati64 (a,b)
+# endif
+
+#define DEF_STAT_INTERVAL 5.0074891
+#define MIN_STAT_INTERVAL 0.1074891
+
+static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
+
+#if EV_USE_INOTIFY
+# define EV_INOTIFY_BUFSIZE 8192
+
+static void noinline
+infy_add (EV_P_ ev_stat *w)
+{
+ w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
+
+ if (w->wd < 0)
+ {
+ ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
+
+ /* monitor some parent directory for speedup hints */
+ if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
+ {
+ char path [4096];
+ strcpy (path, w->path);
+
+ do
+ {
+ int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
+ | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
+
+ char *pend = strrchr (path, '/');
+
+ if (!pend)
+ break; /* whoops, no '/', complain to your admin */
+
+ *pend = 0;
+ w->wd = inotify_add_watch (fs_fd, path, mask);
+ }
+ while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
+ }
+ }
+ else
+ ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
+
+ if (w->wd >= 0)
+ wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
+}
+
+static void noinline
+infy_del (EV_P_ ev_stat *w)
+{
+ int slot;
+ int wd = w->wd;
+
+ if (wd < 0)
+ return;
+
+ w->wd = -2;
+ slot = wd & (EV_INOTIFY_HASHSIZE - 1);
+ wlist_del (&fs_hash [slot].head, (WL)w);
+
+ /* remove this watcher, if others are watching it, they will rearm */
+ inotify_rm_watch (fs_fd, wd);
+}
+
+static void noinline
+infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
+{
+ if (slot < 0)
+ /* overflow, need to check for all hahs slots */
+ for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
+ infy_wd (EV_A_ slot, wd, ev);
+ else
+ {
+ WL w_;
+
+ for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
+ {
+ ev_stat *w = (ev_stat *)w_;
+ w_ = w_->next; /* lets us remove this watcher and all before it */
+
+ if (w->wd == wd || wd == -1)
+ {
+ if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
+ {
+ w->wd = -1;
+ infy_add (EV_A_ w); /* re-add, no matter what */
+ }
+
+ stat_timer_cb (EV_A_ &w->timer, 0);
+ }
+ }
+ }
+}
+
+static void
+infy_cb (EV_P_ ev_io *w, int revents)
+{
+ char buf [EV_INOTIFY_BUFSIZE];
+ struct inotify_event *ev = (struct inotify_event *)buf;
+ int ofs;
+ int len = read (fs_fd, buf, sizeof (buf));
+
+ for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
+ infy_wd (EV_A_ ev->wd, ev->wd, ev);
+}
+
+void inline_size
+infy_init (EV_P)
+{
+ if (fs_fd != -2)
+ return;
+
+ fs_fd = inotify_init ();
+
+ if (fs_fd >= 0)
+ {
+ ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
+ ev_set_priority (&fs_w, EV_MAXPRI);
+ ev_io_start (EV_A_ &fs_w);
+ }
+}
+
+void inline_size
+infy_fork (EV_P)
+{
+ int slot;
+
+ if (fs_fd < 0)
+ return;
+
+ close (fs_fd);
+ fs_fd = inotify_init ();
+
+ for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
+ {
+ WL w_ = fs_hash [slot].head;
+ fs_hash [slot].head = 0;
+
+ while (w_)
+ {
+ ev_stat *w = (ev_stat *)w_;
+ w_ = w_->next; /* lets us add this watcher */
+
+ w->wd = -1;
+
+ if (fs_fd >= 0)
+ infy_add (EV_A_ w); /* re-add, no matter what */
+ else
+ ev_timer_start (EV_A_ &w->timer);
+ }
+
+ }
+}
+
+#endif
+
void
-ev_check_start (EV_P_ ev_check *w)
+ev_stat_stat (EV_P_ ev_stat *w)
+{
+ if (lstat (w->path, &w->attr) < 0)
+ w->attr.st_nlink = 0;
+ else if (!w->attr.st_nlink)
+ w->attr.st_nlink = 1;
+}
+
+static void noinline
+stat_timer_cb (EV_P_ ev_timer *w_, int revents)
+{
+ ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
+
+ /* we copy this here each the time so that */
+ /* prev has the old value when the callback gets invoked */
+ w->prev = w->attr;
+ ev_stat_stat (EV_A_ w);
+
+ /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
+ if (
+ w->prev.st_dev != w->attr.st_dev
+ || w->prev.st_ino != w->attr.st_ino
+ || w->prev.st_mode != w->attr.st_mode
+ || w->prev.st_nlink != w->attr.st_nlink
+ || w->prev.st_uid != w->attr.st_uid
+ || w->prev.st_gid != w->attr.st_gid
+ || w->prev.st_rdev != w->attr.st_rdev
+ || w->prev.st_size != w->attr.st_size
+ || w->prev.st_atime != w->attr.st_atime
+ || w->prev.st_mtime != w->attr.st_mtime
+ || w->prev.st_ctime != w->attr.st_ctime
+ ) {
+ #if EV_USE_INOTIFY
+ infy_del (EV_A_ w);
+ infy_add (EV_A_ w);
+ ev_stat_stat (EV_A_ w); /* avoid race... */
+ #endif
+
+ ev_feed_event (EV_A_ w, EV_STAT);
+ }
+}
+
+void
+ev_stat_start (EV_P_ ev_stat *w)
{
if (expect_false (ev_is_active (w)))
return;
- ev_start (EV_A_ (W)w, ++checkcnt);
- array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
- checks [checkcnt - 1] = w;
+ /* since we use memcmp, we need to clear any padding data etc. */
+ memset (&w->prev, 0, sizeof (ev_statdata));
+ memset (&w->attr, 0, sizeof (ev_statdata));
+
+ ev_stat_stat (EV_A_ w);
+
+ if (w->interval < MIN_STAT_INTERVAL)
+ w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
+
+ ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
+ ev_set_priority (&w->timer, ev_priority (w));
+
+#if EV_USE_INOTIFY
+ infy_init (EV_A);
+
+ if (fs_fd >= 0)
+ infy_add (EV_A_ w);
+ else
+#endif
+ ev_timer_start (EV_A_ &w->timer);
+
+ ev_start (EV_A_ (W)w, 1);
}
void
-ev_check_stop (EV_P_ ev_check *w)
+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;
- checks [((W)w)->active - 1] = checks [--checkcnt];
+#if EV_USE_INOTIFY
+ infy_del (EV_A_ w);
+#endif
+ ev_timer_stop (EV_A_ &w->timer);
+
ev_stop (EV_A_ (W)w);
}
-
-#ifndef SA_RESTART
-# define SA_RESTART 0
#endif
+#if EV_IDLE_ENABLE
void
-ev_signal_start (EV_P_ ev_signal *w)
+ev_idle_start (EV_P_ ev_idle *w)
{
-#if EV_MULTIPLICITY
- assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
-#endif
if (expect_false (ev_is_active (w)))
return;
- assert (("ev_signal_start called with illegal signal number", w->signum > 0));
+ pri_adjust (EV_A_ (W)w);
- 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);
+ {
+ int active = ++idlecnt [ABSPRI (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
- }
+ ++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_signal_stop (EV_P_ ev_signal *w)
+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;
- wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
- ev_stop (EV_A_ (W)w);
+ {
+ int active = ((W)w)->active;
- if (!signals [w->signum - 1].head)
- signal (w->signum, SIG_DFL);
+ 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_child_start (EV_P_ ev_child *w)
+ev_prepare_start (EV_P_ ev_prepare *w)
{
-#if EV_MULTIPLICITY
- assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
-#endif
if (expect_false (ev_is_active (w)))
return;
- ev_start (EV_A_ (W)w, 1);
- wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
+ ev_start (EV_A_ (W)w, ++preparecnt);
+ array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
+ prepares [preparecnt - 1] = w;
}
void
-ev_child_stop (EV_P_ ev_child *w)
+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;
- wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
+ {
+ int active = ((W)w)->active;
+ prepares [active - 1] = prepares [--preparecnt];
+ ((W)prepares [active - 1])->active = active;
+ }
+
ev_stop (EV_A_ (W)w);
}
-#if EV_MULTIPLICITY
void
+ev_check_start (EV_P_ ev_check *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ ev_start (EV_A_ (W)w, ++checkcnt);
+ array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
+ checks [checkcnt - 1] = w;
+}
+
+void
+ev_check_stop (EV_P_ ev_check *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ {
+ int active = ((W)w)->active;
+ checks [active - 1] = checks [--checkcnt];
+ ((W)checks [active - 1])->active = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+}
+
+#if EV_EMBED_ENABLE
+void noinline
ev_embed_sweep (EV_P_ ev_embed *w)
{
ev_loop (w->loop, EVLOOP_NONBLOCK);
ev_set_priority (&w->io, ev_priority (w));
ev_io_start (EV_A_ &w->io);
+
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_stop (EV_A_ (W)w);
+}
+#endif
+
+#if EV_FORK_ENABLE
+void
+ev_fork_start (EV_P_ ev_fork *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ ev_start (EV_A_ (W)w, ++forkcnt);
+ array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
+ forks [forkcnt - 1] = w;
+}
+
+void
+ev_fork_stop (EV_P_ ev_fork *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ {
+ int active = ((W)w)->active;
+ forks [active - 1] = forks [--forkcnt];
+ ((W)forks [active - 1])->active = active;
+ }
+
ev_stop (EV_A_ (W)w);
}
#endif
projects / software / libev.git / blobdiff