#include <signal.h>
#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_PID_HASHSIZE
+# if EV_MINIMAL
+# define EV_PID_HASHSIZE 1
+# else
+# define EV_PID_HASHSIZE 16
+# endif
+#endif
+
/**/
#ifndef CLOCK_MONOTONIC
#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
#if __GNUC__ >= 3
# define expect(expr,value) __builtin_expect ((expr),(value))
-# define inline static inline
+# 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
#else
# define expect(expr,value) (expr)
-# define inline static
+# define inline_speed static
+# define inline_size static
+# define noinline
#endif
#define expect_false(expr) expect ((expr) != 0, 0)
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;
}
#endif
}
-inline ev_tstamp
+ev_tstamp inline_size
get_clock (void)
{
#if EV_USE_MONOTONIC
/*****************************************************************************/
-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;
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;
/*****************************************************************************/
-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* */
}
}
+#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
/* have to use the microsoft-never-gets-it-right macro */
array_free (fdchange, EMPTY0);
array_free (timer, EMPTY0);
-#if EV_PERIODICS
+#if EV_PERIODIC_ENABLE
array_free (periodic, EMPTY0);
#endif
array_free (idle, EMPTY0);
/*****************************************************************************/
-static int
+int inline_size
any_pending (EV_P)
{
int pri;
return 0;
}
-inline void
+void inline_speed
call_pending (EV_P)
{
int pri;
}
}
-inline void
+void inline_size
timers_reify (EV_P)
{
while (timercnt && ((WT)timers [0])->at <= mn_now)
}
}
-#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)
}
}
-static void
+static void noinline
periodics_reschedule (EV_P)
{
int i;
}
#endif
-inline int
+int inline_size
time_update_monotonic (EV_P)
{
mn_now = get_clock ();
}
}
-inline void
+void inline_size
time_update (EV_P)
{
int i;
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
while (activecnt)
{
+ /* we might have forked, so reify kernel state if necessary */
+ #if EV_FORK_ENABLE
+ if (expect_false (postfork))
+ if (forkcnt)
+ {
+ queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
+ call_pending (EV_A);
+ }
+ #endif
+
/* queue check watchers (and execute them) */
if (expect_false (preparecnt))
{
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;
/* 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
/*****************************************************************************/
-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
+void inline_speed
ev_clear_pending (EV_P_ W w)
{
if (w->pending)
}
}
-inline void
+void inline_speed
ev_start (EV_P_ W w, int active)
{
if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
ev_ref (EV_A);
}
-inline void
+void inline_size
ev_stop (EV_P_ W w)
{
ev_unref (EV_A);
}
}
-#if EV_PERIODICS
+#if EV_PERIODIC_ENABLE
void
ev_periodic_start (EV_P_ ev_periodic *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);
if (expect_false (!ev_is_active (w)))
return;
- {
- int active = ((W)w)->active;
- idles [active - 1] = idles [--idlecnt];
- ((W)idles [active - 1])->active = active;
- }
+ 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_ 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, 1);
+ wlist_add ((WL *)&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);
+ if (expect_false (!ev_is_active (w)))
+ return;
+ 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
+
void
-ev_prepare_start (EV_P_ ev_prepare *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
+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);
+
+ if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
+ 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, ++preparecnt);
- array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
- prepares [preparecnt - 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));
+ ev_timer_start (EV_A_ &w->timer);
+
+ ev_start (EV_A_ (W)w, 1);
}
void
-ev_prepare_stop (EV_P_ ev_prepare *w)
+ev_stat_stop (EV_P_ ev_stat *w)
{
ev_clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
return;
- {
- int active = ((W)w)->active;
- prepares [active - 1] = prepares [--preparecnt];
- ((W)prepares [active - 1])->active = active;
- }
+ ev_timer_stop (EV_A_ &w->timer);
ev_stop (EV_A_ (W)w);
}
+#endif
void
-ev_check_start (EV_P_ ev_check *w)
+ev_idle_start (EV_P_ ev_idle *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;
+ ev_start (EV_A_ (W)w, ++idlecnt);
+ array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
+ idles [idlecnt - 1] = w;
}
void
-ev_check_stop (EV_P_ ev_check *w)
+ev_idle_stop (EV_P_ ev_idle *w)
{
ev_clear_pending (EV_A_ (W)w);
if (expect_false (!ev_is_active (w)))
{
int active = ((W)w)->active;
- checks [active - 1] = checks [--checkcnt];
- ((W)checks [active - 1])->active = active;
+ idles [active - 1] = idles [--idlecnt];
+ ((W)idles [active - 1])->active = active;
}
ev_stop (EV_A_ (W)w);
}
-#ifndef SA_RESTART
-# define SA_RESTART 0
-#endif
-
void
-ev_signal_start (EV_P_ ev_signal *w)
+ev_prepare_start (EV_P_ ev_prepare *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));
-
- 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
- }
+ ev_start (EV_A_ (W)w, ++preparecnt);
+ array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
+ prepares [preparecnt - 1] = w;
}
void
-ev_signal_stop (EV_P_ ev_signal *w)
+ev_prepare_stop (EV_P_ ev_prepare *w)
{
ev_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;
+ prepares [active - 1] = prepares [--preparecnt];
+ ((W)prepares [active - 1])->active = active;
+ }
- if (!signals [w->signum - 1].head)
- signal (w->signum, SIG_DFL);
+ ev_stop (EV_A_ (W)w);
}
void
-ev_child_start (EV_P_ ev_child *w)
+ev_check_start (EV_P_ ev_check *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, ++checkcnt);
+ array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
+ checks [checkcnt - 1] = w;
}
void
-ev_child_stop (EV_P_ ev_child *w)
+ev_check_stop (EV_P_ ev_check *w)
{
ev_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;
+ checks [active - 1] = checks [--checkcnt];
+ ((W)checks [active - 1])->active = active;
+ }
+
ev_stop (EV_A_ (W)w);
}
-#if EV_MULTIPLICITY
-void
+#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);
}
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)
+{
+ ev_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
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