#endif
#ifndef EV_STANDALONE
-# include "config.h"
+# ifdef EV_CONFIG_H
+# include EV_CONFIG_H
+# else
+# include "config.h"
+# endif
# if HAVE_CLOCK_GETTIME
# ifndef EV_USE_MONOTONIC
# ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 1
# endif
+# else
+# ifndef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 0
+# endif
+# ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+# endif
# endif
-# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
-# define EV_USE_SELECT 1
+# ifndef EV_USE_SELECT
+# if HAVE_SELECT && HAVE_SYS_SELECT_H
+# define EV_USE_SELECT 1
+# else
+# define EV_USE_SELECT 0
+# endif
# endif
-# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) && !defined (__APPLE__)
-# define EV_USE_POLL 1
+# ifndef EV_USE_POLL
+# if HAVE_POLL && HAVE_POLL_H
+# define EV_USE_POLL 1
+# else
+# define EV_USE_POLL 0
+# endif
# endif
-
-# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
-# define EV_USE_EPOLL 1
+
+# ifndef EV_USE_EPOLL
+# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
+# define EV_USE_EPOLL 1
+# else
+# define EV_USE_EPOLL 0
+# endif
# endif
-
-# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) && !defined (__APPLE__)
-# define EV_USE_KQUEUE 1
+
+# ifndef EV_USE_KQUEUE
+# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
+# define EV_USE_KQUEUE 1
+# else
+# define EV_USE_KQUEUE 0
+# endif
+# endif
+
+# ifndef EV_USE_PORT
+# if HAVE_PORT_H && HAVE_PORT_CREATE
+# define EV_USE_PORT 1
+# else
+# define EV_USE_PORT 0
+# endif
# endif
#endif
#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>
/**/
#ifndef EV_USE_MONOTONIC
-# define EV_USE_MONOTONIC 1
+# define EV_USE_MONOTONIC 0
+#endif
+
+#ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
#endif
#ifndef EV_USE_SELECT
# define EV_USE_SELECT 1
-# define EV_SELECT_USE_FD_SET 1
#endif
#ifndef EV_USE_POLL
# define EV_USE_KQUEUE 0
#endif
-#ifndef EV_USE_REALTIME
-# define EV_USE_REALTIME 1
+#ifndef EV_USE_PORT
+# define EV_USE_PORT 0
#endif
/**/
/**/
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
-#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
+#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 300. /* 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 */
#ifdef EV_H
# include EV_H
#if __GNUC__ >= 3
# define expect(expr,value) __builtin_expect ((expr),(value))
-# define inline 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)
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
#define ABSPRI(w) ((w)->priority - EV_MINPRI)
-#define EMPTY /* required for microsofts broken pseudo-c compiler */
+#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
+#define EMPTY2(a,b) /* used to suppress some warnings */
-typedef struct ev_watcher *W;
-typedef struct ev_watcher_list *WL;
-typedef struct ev_watcher_time *WT;
+typedef ev_watcher *W;
+typedef ev_watcher_list *WL;
+typedef ev_watcher_time *WT;
static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
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;
}
};
#include "ev_wrap.h"
- struct ev_loop default_loop_struct;
- static struct ev_loop *default_loop;
+ static struct ev_loop default_loop_struct;
+ struct ev_loop *ev_default_loop_ptr;
#else
#include "ev_vars.h"
#undef VAR
- static int default_loop;
+ static int ev_default_loop_ptr;
#endif
#endif
}
-inline ev_tstamp
+ev_tstamp inline_size
get_clock (void)
{
#if EV_USE_MONOTONIC
}
#endif
-#define array_roundsize(type,n) ((n) | 4 & ~3)
+#define array_roundsize(type,n) (((n) | 4) & ~3)
#define array_needsize(type,base,cur,cnt,init) \
if (expect_false ((cnt) > cur)) \
/*****************************************************************************/
-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;
- if (w_->pending)
+ if (expect_false (w_->pending))
{
pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
return;
}
w_->pending = ++pendingcnt [ABSPRI (w_)];
- array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
+ 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;
}
-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;
- struct ev_io *w;
+ ev_io *w;
- for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
+ for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
{
int ev = w->events & revents;
fd_event (EV_A_ fd, revents);
}
-/*****************************************************************************/
-
-static void
+void inline_size
fd_reify (EV_P)
{
int i;
{
int fd = fdchanges [i];
ANFD *anfd = anfds + fd;
- struct ev_io *w;
+ ev_io *w;
int events = 0;
- for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
+ for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
events |= w->events;
#if EV_SELECT_IS_WINSOCKET
anfd->reify = 0;
- method_modify (EV_A_ fd, anfd->events, events);
+ backend_modify (EV_A_ fd, anfd->events, events);
anfd->events = events;
}
fdchangecnt = 0;
}
-static void
+void inline_size
fd_change (EV_P_ int fd)
{
- if (anfds [fd].reify)
+ if (expect_false (anfds [fd].reify))
return;
anfds [fd].reify = 1;
++fdchangecnt;
- array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
+ array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
fdchanges [fdchangecnt - 1] = fd;
}
-static void
+void inline_speed
fd_kill (EV_P_ int fd)
{
- struct ev_io *w;
+ ev_io *w;
- while ((w = (struct ev_io *)anfds [fd].head))
+ while ((w = (ev_io *)anfds [fd].head))
{
ev_io_stop (EV_A_ w);
ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
}
}
-static 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 method needs to re-arm all fds from scratch */
-static void
+/* usually called after fork if backend needs to re-arm all fds from scratch */
+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 int sigpipe [2];
static sig_atomic_t volatile gotsig;
-static struct ev_io sigev;
+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;
#if EV_MULTIPLICITY
- assert (("feeding signal events is only supported in the default loop", loop == default_loop));
+ assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
#endif
--signum;
}
static void
-sigcb (EV_P_ struct ev_io *iow, int revents)
+sigcb (EV_P_ ev_io *iow, int revents)
{
int signum;
ev_feed_signal_event (EV_A_ signum + 1);
}
-inline void
+void inline_size
fd_intern (int fd)
{
#ifdef _WIN32
#endif
}
-static void
+static void noinline
siginit (EV_P)
{
fd_intern (sigpipe [0]);
/*****************************************************************************/
-static struct ev_child *childs [PID_HASHSIZE];
+static ev_child *childs [PID_HASHSIZE];
#ifndef _WIN32
-static struct ev_signal childev;
-
-#ifndef WCONTINUED
-# define WCONTINUED 0
-#endif
+static ev_signal childev;
-static void
-child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
+void inline_speed
+child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
{
- struct ev_child *w;
+ ev_child *w;
- for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
+ for (w = (ev_child *)childs [chain & (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_ struct ev_signal *sw, int revents)
+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 */
- 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 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);
+ child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
}
#endif
/*****************************************************************************/
+#if EV_USE_PORT
+# include "ev_port.c"
+#endif
#if EV_USE_KQUEUE
# include "ev_kqueue.c"
#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
#endif
}
-int
-ev_method (EV_P)
+unsigned int
+ev_supported_backends (void)
{
- return method;
+ unsigned int flags = 0;
+
+ if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
+ if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
+ if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
+ if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
+ if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
+
+ return flags;
+}
+
+unsigned int
+ev_recommended_backends (void)
+{
+ unsigned int flags = ev_supported_backends ();
+
+#ifndef __NetBSD__
+ /* kqueue is borked on everything but netbsd apparently */
+ /* it usually doesn't work correctly on anything but sockets and pipes */
+ flags &= ~EVBACKEND_KQUEUE;
+#endif
+#ifdef __APPLE__
+ // flags &= ~EVBACKEND_KQUEUE; for documentation
+ flags &= ~EVBACKEND_POLL;
+#endif
+
+ return flags;
+}
+
+unsigned int
+ev_embeddable_backends (void)
+{
+ return EVBACKEND_EPOLL
+ | EVBACKEND_KQUEUE
+ | EVBACKEND_PORT;
+}
+
+unsigned int
+ev_backend (EV_P)
+{
+ return backend;
}
static void
-loop_init (EV_P_ int methods)
+loop_init (EV_P_ unsigned int flags)
{
- if (!method)
+ if (!backend)
{
#if EV_USE_MONOTONIC
{
now_floor = mn_now;
rtmn_diff = ev_rt_now - mn_now;
- if (methods == EVMETHOD_AUTO)
- if (!enable_secure () && getenv ("LIBEV_METHODS"))
- methods = atoi (getenv ("LIBEV_METHODS"));
- else
- methods = EVMETHOD_ANY;
+ if (!(flags & EVFLAG_NOENV)
+ && !enable_secure ()
+ && getenv ("LIBEV_FLAGS"))
+ flags = atoi (getenv ("LIBEV_FLAGS"));
+
+ if (!(flags & 0x0000ffffUL))
+ flags |= ev_recommended_backends ();
- method = 0;
+ backend = 0;
+#if EV_USE_PORT
+ if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
+#endif
#if EV_USE_KQUEUE
- if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
+ if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
#endif
#if EV_USE_EPOLL
- if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
+ if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
#endif
#if EV_USE_POLL
- if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
+ if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
#endif
#if EV_USE_SELECT
- if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
+ if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
#endif
ev_init (&sigev, sigcb);
}
}
-void
+static void
loop_destroy (EV_P)
{
int i;
+#if EV_USE_PORT
+ if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
+#endif
#if EV_USE_KQUEUE
- if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
+ if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
#endif
#if EV_USE_EPOLL
- if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
+ if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
#endif
#if EV_USE_POLL
- if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
+ if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
#endif
#if EV_USE_SELECT
- if (method == EVMETHOD_SELECT) select_destroy (EV_A);
+ if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
#endif
for (i = NUMPRI; i--; )
array_free (pending, [i]);
/* have to use the microsoft-never-gets-it-right macro */
- array_free (fdchange, EMPTY);
- array_free (timer, EMPTY);
-#if EV_PERIODICS
- array_free (periodic, EMPTY);
+ array_free (fdchange, EMPTY0);
+ array_free (timer, EMPTY0);
+#if EV_PERIODIC_ENABLE
+ array_free (periodic, EMPTY0);
#endif
- array_free (idle, EMPTY);
- array_free (prepare, EMPTY);
- array_free (check, EMPTY);
+ array_free (idle, EMPTY0);
+ array_free (prepare, EMPTY0);
+ array_free (check, EMPTY0);
- method = 0;
+ backend = 0;
}
static void
loop_fork (EV_P)
{
-#if EV_USE_EPOLL
- if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
+#if EV_USE_PORT
+ if (backend == EVBACKEND_PORT ) port_fork (EV_A);
#endif
#if EV_USE_KQUEUE
- if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
+ if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
+#endif
+#if EV_USE_EPOLL
+ if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
#endif
if (ev_is_active (&sigev))
#if EV_MULTIPLICITY
struct ev_loop *
-ev_loop_new (int methods)
+ev_loop_new (unsigned int flags)
{
struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
memset (loop, 0, sizeof (struct ev_loop));
- loop_init (EV_A_ methods);
+ loop_init (EV_A_ flags);
- if (ev_method (EV_A))
+ if (ev_backend (EV_A))
return loop;
return 0;
#if EV_MULTIPLICITY
struct ev_loop *
+ev_default_loop_init (unsigned int flags)
#else
int
+ev_default_loop (unsigned int flags)
#endif
-ev_default_loop (int methods)
{
if (sigpipe [0] == sigpipe [1])
if (pipe (sigpipe))
return 0;
- if (!default_loop)
+ if (!ev_default_loop_ptr)
{
#if EV_MULTIPLICITY
- struct ev_loop *loop = default_loop = &default_loop_struct;
+ struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
#else
- default_loop = 1;
+ ev_default_loop_ptr = 1;
#endif
- loop_init (EV_A_ methods);
+ loop_init (EV_A_ flags);
- if (ev_method (EV_A))
+ if (ev_backend (EV_A))
{
siginit (EV_A);
#endif
}
else
- default_loop = 0;
+ ev_default_loop_ptr = 0;
}
- return default_loop;
+ return ev_default_loop_ptr;
}
void
ev_default_destroy (void)
{
#if EV_MULTIPLICITY
- struct ev_loop *loop = default_loop;
+ struct ev_loop *loop = ev_default_loop_ptr;
#endif
#ifndef _WIN32
ev_default_fork (void)
{
#if EV_MULTIPLICITY
- struct ev_loop *loop = default_loop;
+ struct ev_loop *loop = ev_default_loop_ptr;
#endif
- if (method)
+ if (backend)
postfork = 1;
}
/*****************************************************************************/
-static int
+int inline_size
any_pending (EV_P)
{
int pri;
return 0;
}
-static void
+void inline_speed
call_pending (EV_P)
{
int pri;
{
ANPENDING *p = pendings [pri] + --pendingcnt [pri];
- if (p->w)
+ 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);
}
}
}
-static void
+void inline_size
timers_reify (EV_P)
{
while (timercnt && ((WT)timers [0])->at <= mn_now)
{
- struct ev_timer *w = timers [0];
+ ev_timer *w = timers [0];
assert (("inactive timer on timer heap detected", ev_is_active (w)));
}
}
-#if EV_PERIODICS
-static void
+#if EV_PERIODIC_ENABLE
+void inline_size
periodics_reify (EV_P)
{
while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
{
- struct ev_periodic *w = periodics [0];
+ ev_periodic *w = periodics [0];
assert (("inactive timer on periodic heap detected", ev_is_active (w)));
/* first reschedule or stop timer */
if (w->reschedule_cb)
{
- ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
-
+ ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
downheap ((WT *)periodics, periodiccnt, 0);
}
}
}
-static void
+static void noinline
periodics_reschedule (EV_P)
{
int i;
/* adjust periodics after time jump */
for (i = 0; i < periodiccnt; ++i)
{
- struct ev_periodic *w = periodics [i];
+ ev_periodic *w = periodics [i];
if (w->reschedule_cb)
((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
}
#endif
-inline int
+int inline_size
time_update_monotonic (EV_P)
{
mn_now = get_clock ();
}
}
-static 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 guarenteed
+ * 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 getting 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
void
ev_loop (EV_P_ int flags)
{
- double block;
- loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
+ loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
+ ? EVUNLOOP_ONE
+ : EVUNLOOP_CANCEL;
- do
+ while (activecnt)
{
/* queue check watchers (and execute them) */
if (expect_false (preparecnt))
fd_reify (EV_A);
/* calculate blocking time */
+ {
+ double block;
- /* we only need this for !monotonic clock or timers, but as we basically
- always have timers, we just calculate it always */
+ if (flags & EVLOOP_NONBLOCK || idlecnt)
+ block = 0.; /* do not block at all */
+ else
+ {
+ /* update time to cancel out callback processing overhead */
#if EV_USE_MONOTONIC
- if (expect_true (have_monotonic))
- time_update_monotonic (EV_A);
- else
+ if (expect_true (have_monotonic))
+ time_update_monotonic (EV_A);
+ else
#endif
- {
- ev_rt_now = ev_time ();
- mn_now = ev_rt_now;
- }
-
- if (flags & EVLOOP_NONBLOCK || idlecnt)
- block = 0.;
- else
- {
- block = MAX_BLOCKTIME;
-
- if (timercnt)
- {
- ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
- if (block > to) block = to;
- }
-
-#if EV_PERIODICS
- if (periodiccnt)
- {
- ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
- if (block > to) block = to;
- }
+ {
+ ev_rt_now = ev_time ();
+ mn_now = ev_rt_now;
+ }
+
+ block = MAX_BLOCKTIME;
+
+ if (timercnt)
+ {
+ ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
+ if (block > to) block = to;
+ }
+
+#if EV_PERIODIC_ENABLE
+ if (periodiccnt)
+ {
+ ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
+ if (block > to) block = to;
+ }
#endif
- if (block < 0.) block = 0.;
- }
+ if (expect_false (block < 0.)) block = 0.;
+ }
- method_poll (EV_A_ block);
+ backend_poll (EV_A_ block);
+ }
/* update ev_rt_now, do magic */
time_update (EV_A);
/* 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
- /* queue idle watchers unless io or timers are pending */
+ /* queue idle watchers unless other events are pending */
if (idlecnt && !any_pending (EV_A))
queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
/* queue check watchers, to be executed first */
- if (checkcnt)
+ if (expect_false (checkcnt))
queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
call_pending (EV_A);
+
+ if (expect_false (loop_done))
+ break;
}
- while (activecnt && !loop_done);
- if (loop_done != 2)
- loop_done = 0;
+ if (loop_done == EVUNLOOP_ONE)
+ loop_done = EVUNLOOP_CANCEL;
}
void
/*****************************************************************************/
-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);
/*****************************************************************************/
void
-ev_io_start (EV_P_ struct ev_io *w)
+ev_io_start (EV_P_ ev_io *w)
{
int fd = w->fd;
- if (ev_is_active (w))
+ if (expect_false (ev_is_active (w)))
return;
assert (("ev_io_start called with negative fd", fd >= 0));
}
void
-ev_io_stop (EV_P_ struct ev_io *w)
+ev_io_stop (EV_P_ ev_io *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (!ev_is_active (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));
}
void
-ev_timer_start (EV_P_ struct ev_timer *w)
+ev_timer_start (EV_P_ ev_timer *w)
{
- if (ev_is_active (w))
+ if (expect_false (ev_is_active (w)))
return;
((WT)w)->at += mn_now;
assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
ev_start (EV_A_ (W)w, ++timercnt);
- array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
+ array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
timers [timercnt - 1] = w;
upheap ((WT *)timers, timercnt - 1);
}
void
-ev_timer_stop (EV_P_ struct ev_timer *w)
+ev_timer_stop (EV_P_ ev_timer *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (!ev_is_active (w))
+ if (expect_false (!ev_is_active (w)))
return;
assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
- if (((W)w)->active < timercnt--)
+ if (expect_true (((W)w)->active < timercnt--))
{
timers [((W)w)->active - 1] = timers [timercnt];
adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
}
void
-ev_timer_again (EV_P_ struct ev_timer *w)
+ev_timer_again (EV_P_ ev_timer *w)
{
if (ev_is_active (w))
{
ev_timer_stop (EV_A_ w);
}
else if (w->repeat)
- ev_timer_start (EV_A_ w);
+ {
+ w->at = w->repeat;
+ ev_timer_start (EV_A_ w);
+ }
}
-#if EV_PERIODICS
+#if EV_PERIODIC_ENABLE
void
-ev_periodic_start (EV_P_ struct ev_periodic *w)
+ev_periodic_start (EV_P_ ev_periodic *w)
{
- if (ev_is_active (w))
+ if (expect_false (ev_is_active (w)))
return;
if (w->reschedule_cb)
}
ev_start (EV_A_ (W)w, ++periodiccnt);
- array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
+ array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
periodics [periodiccnt - 1] = w;
upheap ((WT *)periodics, periodiccnt - 1);
}
void
-ev_periodic_stop (EV_P_ struct ev_periodic *w)
+ev_periodic_stop (EV_P_ ev_periodic *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (!ev_is_active (w))
+ if (expect_false (!ev_is_active (w)))
return;
assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
- if (((W)w)->active < periodiccnt--)
+ if (expect_true (((W)w)->active < periodiccnt--))
{
periodics [((W)w)->active - 1] = periodics [periodiccnt];
adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
}
void
-ev_periodic_again (EV_P_ struct ev_periodic *w)
+ev_periodic_again (EV_P_ ev_periodic *w)
{
/* TODO: use adjustheap and recalculation */
ev_periodic_stop (EV_A_ w);
}
#endif
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+
void
-ev_idle_start (EV_P_ struct ev_idle *w)
+ev_signal_start (EV_P_ ev_signal *w)
{
- if (ev_is_active (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 (struct ev_idle *, idles, idlemax, idlecnt, (void));
- 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_ struct ev_idle *w)
+ev_signal_stop (EV_P_ ev_signal *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (!ev_is_active (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_ struct ev_prepare *w)
+ev_child_start (EV_P_ ev_child *w)
{
- if (ev_is_active (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 (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
- prepares [preparecnt - 1] = w;
+ ev_start (EV_A_ (W)w, 1);
+ wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
}
void
-ev_prepare_stop (EV_P_ struct ev_prepare *w)
+ev_child_stop (EV_P_ ev_child *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (!ev_is_active (w))
+ if (expect_false (!ev_is_active (w)))
return;
- prepares [((W)w)->active - 1] = prepares [--preparecnt];
+ wlist_del ((WL *)&childs [w->pid & (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_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_check_start (EV_P_ struct ev_check *w)
+ev_stat_start (EV_P_ ev_stat *w)
{
- if (ev_is_active (w))
+ if (expect_false (ev_is_active (w)))
return;
- ev_start (EV_A_ (W)w, ++checkcnt);
- array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
- 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));
+ ev_timer_start (EV_A_ &w->timer);
+
+ ev_start (EV_A_ (W)w, 1);
}
void
-ev_check_stop (EV_P_ struct ev_check *w)
+ev_stat_stop (EV_P_ ev_stat *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (!ev_is_active (w))
+ if (expect_false (!ev_is_active (w)))
return;
- checks [((W)w)->active - 1] = checks [--checkcnt];
+ ev_timer_stop (EV_A_ &w->timer);
+
ev_stop (EV_A_ (W)w);
}
-
-#ifndef SA_RESTART
-# define SA_RESTART 0
#endif
void
-ev_signal_start (EV_P_ struct 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 == default_loop));
-#endif
- if (ev_is_active (w))
+ 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, ++idlecnt);
+ array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
+ idles [idlecnt - 1] = 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);
+void
+ev_idle_stop (EV_P_ ev_idle *w)
+{
+ ev_clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
- 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
- }
+ {
+ int active = ((W)w)->active;
+ idles [active - 1] = idles [--idlecnt];
+ ((W)idles [active - 1])->active = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
}
void
-ev_signal_stop (EV_P_ struct ev_signal *w)
+ev_prepare_start (EV_P_ ev_prepare *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;
+}
+
+void
+ev_prepare_stop (EV_P_ ev_prepare *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (!ev_is_active (w))
+ if (expect_false (!ev_is_active (w)))
return;
- wlist_del ((WL *)&signals [w->signum - 1].head, (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 (!signals [w->signum - 1].head)
- signal (w->signum, SIG_DFL);
+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_child_start (EV_P_ struct ev_child *w)
+ev_check_stop (EV_P_ ev_check *w)
{
-#if EV_MULTIPLICITY
- assert (("child watchers are only supported in the default loop", loop == default_loop));
-#endif
- if (ev_is_active (w))
+ ev_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);
+}
+
+static void
+embed_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);
+}
+
+void
+ev_embed_start (EV_P_ ev_embed *w)
+{
+ if (expect_false (ev_is_active (w)))
return;
+ {
+ struct ev_loop *loop = w->loop;
+ assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
+ ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
+ }
+
+ ev_set_priority (&w->io, ev_priority (w));
+ ev_io_start (EV_A_ &w->io);
+
ev_start (EV_A_ (W)w, 1);
- wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
}
void
-ev_child_stop (EV_P_ struct ev_child *w)
+ev_embed_stop (EV_P_ ev_embed *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (!ev_is_active (w))
+ if (expect_false (!ev_is_active (w)))
return;
- wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
+ ev_io_stop (EV_A_ &w->io);
+
ev_stop (EV_A_ (W)w);
}
+#endif
/*****************************************************************************/
struct ev_once
{
- struct ev_io io;
- struct ev_timer to;
+ ev_io io;
+ ev_timer to;
void (*cb)(int revents, void *arg);
void *arg;
};
}
static void
-once_cb_io (EV_P_ struct ev_io *w, int revents)
+once_cb_io (EV_P_ ev_io *w, int revents)
{
once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
}
static void
-once_cb_to (EV_P_ struct ev_timer *w, int revents)
+once_cb_to (EV_P_ ev_timer *w, int revents)
{
once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
}
{
struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
- if (!once)
- cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
- else
+ if (expect_false (!once))
{
- once->cb = cb;
- once->arg = arg;
+ cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
+ return;
+ }
- ev_init (&once->io, once_cb_io);
- if (fd >= 0)
- {
- ev_io_set (&once->io, fd, events);
- ev_io_start (EV_A_ &once->io);
- }
+ once->cb = cb;
+ once->arg = arg;
- ev_init (&once->to, once_cb_to);
- if (timeout >= 0.)
- {
- ev_timer_set (&once->to, timeout, 0.);
- ev_timer_start (EV_A_ &once->to);
- }
+ ev_init (&once->io, once_cb_io);
+ if (fd >= 0)
+ {
+ ev_io_set (&once->io, fd, events);
+ ev_io_start (EV_A_ &once->io);
+ }
+
+ ev_init (&once->to, once_cb_to);
+ if (timeout >= 0.)
+ {
+ ev_timer_set (&once->to, timeout, 0.);
+ ev_timer_start (EV_A_ &once->to);
}
}
projects / software / libev.git / blobdiff