* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
#ifndef EV_STANDALONE
# include "config.h"
+
+# if HAVE_CLOCK_GETTIME
+# ifndef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 1
+# endif
+# ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 1
+# endif
+# endif
+
+# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
+# define EV_USE_SELECT 1
+# endif
+
+# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
+# define EV_USE_POLL 1
+# endif
+
+# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
+# define EV_USE_EPOLL 1
+# endif
+
+# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
+# define EV_USE_KQUEUE 1
+# endif
+
#endif
#include <math.h>
#include <stdlib.h>
-#include <unistd.h>
#include <fcntl.h>
-#include <signal.h>
#include <stddef.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <sys/types.h>
-#ifndef WIN32
+#include <time.h>
+
+#include <signal.h>
+
+#ifndef _WIN32
+# include <unistd.h>
+# include <sys/time.h>
# include <sys/wait.h>
+#else
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# ifndef EV_SELECT_IS_WINSOCKET
+# define EV_SELECT_IS_WINSOCKET 1
+# endif
#endif
-#include <sys/time.h>
-#include <time.h>
/**/
#ifndef EV_USE_SELECT
# define EV_USE_SELECT 1
+# define EV_SELECT_USE_FD_SET 1
#endif
-#ifndef EV_USEV_POLL
-# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
+#ifndef EV_USE_POLL
+# ifdef _WIN32
+# define EV_USE_POLL 0
+# else
+# define EV_USE_POLL 1
+# endif
#endif
#ifndef EV_USE_EPOLL
/**/
+/* darwin simply cannot be helped */
+#ifdef __APPLE__
+# undef EV_USE_POLL
+# undef EV_USE_KQUEUE
+#endif
+
#ifndef CLOCK_MONOTONIC
# undef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 0
# define EV_USE_REALTIME 0
#endif
+#if EV_SELECT_IS_WINSOCKET
+# include <winsock.h>
+#endif
+
/**/
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
#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 */
-#include "ev.h"
+#ifdef EV_H
+# include EV_H
+#else
+# include "ev.h"
+#endif
#if __GNUC__ >= 3
# define expect(expr,value) __builtin_expect ((expr),(value))
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
#define ABSPRI(w) ((w)->priority - EV_MINPRI)
+#define EMPTY /* required for microsofts broken pseudo-c compiler */
+
typedef struct ev_watcher *W;
typedef struct ev_watcher_list *WL;
typedef struct ev_watcher_time *WT;
-static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */
-static ev_tstamp rt_now;
-static int method;
+static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
-static int have_monotonic; /* runtime */
+#ifdef _WIN32
+# include "ev_win32.c"
+#endif
-static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
-static void (*method_modify)(EV_P_ int fd, int oev, int nev);
-static void (*method_poll)(EV_P_ ev_tstamp timeout);
+/*****************************************************************************/
-static int activecnt; /* number of active events */
+static void (*syserr_cb)(const char *msg);
-#if EV_USE_SELECT
-static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
-static int vec_max;
-#endif
+void ev_set_syserr_cb (void (*cb)(const char *msg))
+{
+ syserr_cb = cb;
+}
-#if EV_USEV_POLL
-static struct pollfd *polls;
-static int pollmax, pollcnt;
-static int *pollidxs; /* maps fds into structure indices */
-static int pollidxmax;
-#endif
+static void
+syserr (const char *msg)
+{
+ if (!msg)
+ msg = "(libev) system error";
-#if EV_USE_EPOLL
-static int epoll_fd = -1;
+ if (syserr_cb)
+ syserr_cb (msg);
+ else
+ {
+ perror (msg);
+ abort ();
+ }
+}
+
+static void *(*alloc)(void *ptr, long size);
+
+void ev_set_allocator (void *(*cb)(void *ptr, long size))
+{
+ alloc = cb;
+}
+
+static void *
+ev_realloc (void *ptr, long size)
+{
+ ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
+
+ if (!ptr && size)
+ {
+ fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
+ abort ();
+ }
+
+ return ptr;
+}
+
+#define ev_malloc(size) ev_realloc (0, (size))
+#define ev_free(ptr) ev_realloc ((ptr), 0)
-static struct epoll_event *events;
-static int eventmax;
+/*****************************************************************************/
+
+typedef struct
+{
+ WL head;
+ unsigned char events;
+ unsigned char reify;
+#if EV_SELECT_IS_WINSOCKET
+ SOCKET handle;
#endif
+} ANFD;
+
+typedef struct
+{
+ W w;
+ int events;
+} ANPENDING;
+
+#if EV_MULTIPLICITY
+
+ struct ev_loop
+ {
+ ev_tstamp ev_rt_now;
+ #define ev_rt_now ((loop)->ev_rt_now)
+ #define VAR(name,decl) decl;
+ #include "ev_vars.h"
+ #undef VAR
+ };
+ #include "ev_wrap.h"
+
+ struct ev_loop default_loop_struct;
+ static struct ev_loop *default_loop;
+
+#else
+
+ ev_tstamp ev_rt_now;
+ #define VAR(name,decl) static decl;
+ #include "ev_vars.h"
+ #undef VAR
+
+ static int default_loop;
-#if EV_USE_KQUEUE
-static int kqueue_fd;
-static struct kevent *kqueue_changes;
-static int kqueue_changemax, kqueue_changecnt;
-static struct kevent *kqueue_events;
-static int kqueue_eventmax;
#endif
/*****************************************************************************/
-inline ev_tstamp
+ev_tstamp
ev_time (void)
{
#if EV_USE_REALTIME
return ev_time ();
}
+#if EV_MULTIPLICITY
ev_tstamp
ev_now (EV_P)
{
- return rt_now;
+ return ev_rt_now;
}
+#endif
-#define array_roundsize(base,n) ((n) | 4 & ~3)
-
-#define array_needsize(base,cur,cnt,init) \
- if (expect_false ((cnt) > cur)) \
- { \
- int newcnt = cur; \
- do \
- { \
- newcnt = array_roundsize (base, newcnt << 1); \
- } \
- while ((cnt) > newcnt); \
- \
- base = realloc (base, sizeof (*base) * (newcnt)); \
- init (base + cur, newcnt - cur); \
- cur = newcnt; \
+#define array_roundsize(type,n) (((n) | 4) & ~3)
+
+#define array_needsize(type,base,cur,cnt,init) \
+ 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; \
}
-/*****************************************************************************/
+#define array_slim(type,stem) \
+ if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
+ { \
+ stem ## max = array_roundsize (stem ## cnt >> 1); \
+ base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
+ fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
+ }
-typedef struct
-{
- struct ev_watcher_list *head;
- unsigned char events;
- unsigned char reify;
-} ANFD;
+#define array_free(stem, idx) \
+ ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
-static ANFD *anfds;
-static int anfdmax;
+/*****************************************************************************/
static void
anfds_init (ANFD *base, int count)
}
}
-typedef struct
+void
+ev_feed_event (EV_P_ void *w, int revents)
{
- W w;
- int events;
-} ANPENDING;
-
-static ANPENDING *pendings [NUMPRI];
-static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
+ W w_ = (W)w;
-static void
-event (EV_P_ W w, int events)
-{
- if (w->pending)
+ if (w_->pending)
{
- pendings [ABSPRI (w)][w->pending - 1].events |= events;
+ pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
return;
}
- w->pending = ++pendingcnt [ABSPRI (w)];
- array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
- pendings [ABSPRI (w)][w->pending - 1].w = w;
- pendings [ABSPRI (w)][w->pending - 1].events = events;
+ w_->pending = ++pendingcnt [ABSPRI (w_)];
+ array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
+ pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
+ pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
}
static void
int i;
for (i = 0; i < eventcnt; ++i)
- event (EV_A_ events [i], type);
+ ev_feed_event (EV_A_ events [i], type);
}
-static void
-fd_event (EV_P_ int fd, int events)
+inline void
+fd_event (EV_P_ int fd, int revents)
{
ANFD *anfd = anfds + fd;
struct ev_io *w;
for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
{
- int ev = w->events & events;
+ int ev = w->events & revents;
if (ev)
- event (EV_A_ (W)w, ev);
+ ev_feed_event (EV_A_ (W)w, ev);
}
}
-/*****************************************************************************/
+void
+ev_feed_fd_event (EV_P_ int fd, int revents)
+{
+ fd_event (EV_A_ fd, revents);
+}
-static int *fdchanges;
-static int fdchangemax, fdchangecnt;
+/*****************************************************************************/
static void
fd_reify (EV_P)
for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
events |= w->events;
- anfd->reify = 0;
-
- if (anfd->events != events)
+#if EV_SELECT_IS_WINSOCKET
+ if (events)
{
- method_modify (EV_A_ fd, anfd->events, events);
- anfd->events = events;
+ unsigned long argp;
+ anfd->handle = _get_osfhandle (fd);
+ assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
}
+#endif
+
+ anfd->reify = 0;
+
+ method_modify (EV_A_ fd, anfd->events, events);
+ anfd->events = events;
}
fdchangecnt = 0;
static void
fd_change (EV_P_ int fd)
{
- if (anfds [fd].reify || fdchangecnt < 0)
+ if (anfds [fd].reify)
return;
anfds [fd].reify = 1;
++fdchangecnt;
- array_needsize (fdchanges, fdchangemax, fdchangecnt, );
+ array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
fdchanges [fdchangecnt - 1] = fd;
}
while ((w = (struct ev_io *)anfds [fd].head))
{
ev_io_stop (EV_A_ w);
- event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
+ ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
}
}
+static int
+fd_valid (int fd)
+{
+#ifdef _WIN32
+ return _get_osfhandle (fd) != -1;
+#else
+ return fcntl (fd, F_GETFD) != -1;
+#endif
+}
+
/* called on EBADF to verify fds */
static void
fd_ebadf (EV_P)
for (fd = 0; fd < anfdmax; ++fd)
if (anfds [fd].events)
- if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
+ if (!fd_valid (fd) == -1 && errno == EBADF)
fd_kill (EV_A_ fd);
}
static void
fd_enomem (EV_P)
{
- int fd = anfdmax;
+ int fd;
- while (fd--)
+ for (fd = anfdmax; fd--; )
if (anfds [fd].events)
{
- close (fd);
fd_kill (EV_A_ fd);
return;
}
}
-/*****************************************************************************/
+/* usually called after fork if method needs to re-arm all fds from scratch */
+static void
+fd_rearm_all (EV_P)
+{
+ int fd;
-static struct ev_timer **timers;
-static int timermax, timercnt;
+ /* this should be highly optimised to not do anything but set a flag */
+ for (fd = 0; fd < anfdmax; ++fd)
+ if (anfds [fd].events)
+ {
+ anfds [fd].events = 0;
+ fd_change (EV_A_ fd);
+ }
+}
-static struct ev_periodic **periodics;
-static int periodicmax, periodiccnt;
+/*****************************************************************************/
static void
-upheap (WT *timers, int k)
+upheap (WT *heap, int k)
{
- WT w = timers [k];
+ WT w = heap [k];
- while (k && timers [k >> 1]->at > w->at)
+ while (k && heap [k >> 1]->at > w->at)
{
- timers [k] = timers [k >> 1];
- timers [k]->active = k + 1;
+ heap [k] = heap [k >> 1];
+ ((W)heap [k])->active = k + 1;
k >>= 1;
}
- timers [k] = w;
- timers [k]->active = k + 1;
+ heap [k] = w;
+ ((W)heap [k])->active = k + 1;
}
static void
-downheap (WT *timers, int N, int k)
+downheap (WT *heap, int N, int k)
{
- WT w = timers [k];
+ WT w = heap [k];
while (k < (N >> 1))
{
int j = k << 1;
- if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
+ if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
++j;
- if (w->at <= timers [j]->at)
+ if (w->at <= heap [j]->at)
break;
- timers [k] = timers [j];
- timers [k]->active = k + 1;
+ heap [k] = heap [j];
+ ((W)heap [k])->active = k + 1;
k = j;
}
- timers [k] = w;
- timers [k]->active = k + 1;
+ heap [k] = w;
+ ((W)heap [k])->active = k + 1;
+}
+
+inline void
+adjustheap (WT *heap, int N, int k)
+{
+ upheap (heap, k);
+ downheap (heap, N, k);
}
/*****************************************************************************/
typedef struct
{
- struct ev_watcher_list *head;
+ WL head;
sig_atomic_t volatile gotsig;
} ANSIG;
static void
sighandler (int signum)
{
+#if _WIN32
+ signal (signum, sighandler);
+#endif
+
signals [signum - 1].gotsig = 1;
if (!gotsig)
}
}
+void
+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));
+#endif
+
+ --signum;
+
+ if (signum < 0 || signum >= signalmax)
+ return;
+
+ signals [signum].gotsig = 0;
+
+ for (w = signals [signum].head; w; w = w->next)
+ ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
+}
+
static void
sigcb (EV_P_ struct ev_io *iow, int revents)
{
- struct ev_watcher_list *w;
int signum;
read (sigpipe [0], &revents, 1);
for (signum = signalmax; signum--; )
if (signals [signum].gotsig)
- {
- signals [signum].gotsig = 0;
+ ev_feed_signal_event (EV_A_ signum + 1);
+}
- for (w = signals [signum].head; w; w = w->next)
- event (EV_A_ (W)w, EV_SIGNAL);
- }
+inline void
+fd_intern (int fd)
+{
+#ifdef _WIN32
+ int arg = 1;
+ ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
+#else
+ fcntl (fd, F_SETFD, FD_CLOEXEC);
+ fcntl (fd, F_SETFL, O_NONBLOCK);
+#endif
}
static void
siginit (EV_P)
{
-#ifndef WIN32
- fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
- fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
-
- /* rather than sort out wether we really need nb, set it */
- fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
- fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
-#endif
+ fd_intern (sigpipe [0]);
+ fd_intern (sigpipe [1]);
ev_io_set (&sigev, sigpipe [0], EV_READ);
- ev_io_start (&sigev);
+ ev_io_start (EV_A_ &sigev);
ev_unref (EV_A); /* child watcher should not keep loop alive */
}
/*****************************************************************************/
-static struct ev_idle **idles;
-static int idlemax, idlecnt;
-
-static struct ev_prepare **prepares;
-static int preparemax, preparecnt;
-
-static struct ev_check **checks;
-static int checkmax, checkcnt;
+static struct ev_child *childs [PID_HASHSIZE];
-/*****************************************************************************/
+#ifndef _WIN32
-static struct ev_child *childs [PID_HASHSIZE];
static struct ev_signal childev;
-#ifndef WIN32
-
#ifndef WCONTINUED
# define WCONTINUED 0
#endif
for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
if (w->pid == pid || !w->pid)
{
- w->priority = sw->priority; /* need to do it *now* */
- w->rpid = pid;
- w->rstatus = status;
- event (EV_A_ (W)w, EV_CHILD);
+ ev_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);
}
}
if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
{
/* make sure we are called again until all childs have been reaped */
- event (EV_A_ (W)sw, EV_SIGNAL);
+ 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 event catches that */
#if EV_USE_EPOLL
# include "ev_epoll.c"
#endif
-#if EV_USEV_POLL
+#if EV_USE_POLL
# include "ev_poll.c"
#endif
#if EV_USE_SELECT
static int
enable_secure (void)
{
-#ifdef WIN32
+#ifdef _WIN32
return 0;
#else
return getuid () != geteuid ()
return method;
}
-int
-ev_init (EV_P_ int methods)
+static void
+loop_init (EV_P_ unsigned int flags)
{
if (!method)
{
}
#endif
- rt_now = ev_time ();
+ ev_rt_now = ev_time ();
mn_now = get_clock ();
now_floor = mn_now;
- diff = rt_now - mn_now;
+ rtmn_diff = ev_rt_now - mn_now;
- if (pipe (sigpipe))
- return 0;
+ if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
+ flags = atoi (getenv ("LIBEV_FLAGS"));
- if (methods == EVMETHOD_AUTO)
- if (!enable_secure () && getenv ("LIBmethodS"))
- methods = atoi (getenv ("LIBmethodS"));
- else
- methods = EVMETHOD_ANY;
+ if (!(flags & 0x0000ffff))
+ flags |= 0x0000ffff;
method = 0;
#if EV_USE_KQUEUE
- if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
+ if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
+#endif
+#if EV_USE_EPOLL
+ if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
+#endif
+#if EV_USE_POLL
+ if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
+#endif
+#if EV_USE_SELECT
+ if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
+#endif
+
+ ev_init (&sigev, sigcb);
+ ev_set_priority (&sigev, EV_MAXPRI);
+ }
+}
+
+void
+loop_destroy (EV_P)
+{
+ int i;
+
+#if EV_USE_KQUEUE
+ if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
#endif
#if EV_USE_EPOLL
- if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
+ if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
#endif
-#if EV_USEV_POLL
- if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
+#if EV_USE_POLL
+ if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
#endif
#if EV_USE_SELECT
- if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
+ if (method == EVMETHOD_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);
+#endif
+ array_free (idle, EMPTY);
+ array_free (prepare, EMPTY);
+ array_free (check, EMPTY);
+
+ method = 0;
+}
+
+static void
+loop_fork (EV_P)
+{
+#if EV_USE_EPOLL
+ if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
+#endif
+#if EV_USE_KQUEUE
+ if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
+#endif
+
+ if (ev_is_active (&sigev))
+ {
+ /* default loop */
+
+ ev_ref (EV_A);
+ ev_io_stop (EV_A_ &sigev);
+ close (sigpipe [0]);
+ close (sigpipe [1]);
+
+ while (pipe (sigpipe))
+ syserr ("(libev) error creating pipe");
+
+ siginit (EV_A);
+ }
+
+ postfork = 0;
+}
+
+#if EV_MULTIPLICITY
+struct ev_loop *
+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_ flags);
+
+ if (ev_method (EV_A))
+ return loop;
+
+ return 0;
+}
+
+void
+ev_loop_destroy (EV_P)
+{
+ loop_destroy (EV_A);
+ ev_free (loop);
+}
+
+void
+ev_loop_fork (EV_P)
+{
+ postfork = 1;
+}
+
#endif
- if (method)
+#if EV_MULTIPLICITY
+struct ev_loop *
+#else
+int
+#endif
+ev_default_loop (unsigned int flags)
+{
+ if (sigpipe [0] == sigpipe [1])
+ if (pipe (sigpipe))
+ return 0;
+
+ if (!default_loop)
+ {
+#if EV_MULTIPLICITY
+ struct ev_loop *loop = default_loop = &default_loop_struct;
+#else
+ default_loop = 1;
+#endif
+
+ loop_init (EV_A_ flags);
+
+ if (ev_method (EV_A))
{
- ev_watcher_init (&sigev, sigcb);
- ev_set_priority (&sigev, EV_MAXPRI);
siginit (EV_A);
-#ifndef WIN32
+#ifndef _WIN32
ev_signal_init (&childev, childcb, SIGCHLD);
ev_set_priority (&childev, EV_MAXPRI);
ev_signal_start (EV_A_ &childev);
ev_unref (EV_A); /* child watcher should not keep loop alive */
#endif
}
+ else
+ default_loop = 0;
}
- return method;
+ return default_loop;
}
-/*****************************************************************************/
-
void
-ev_fork_prepare (void)
+ev_default_destroy (void)
{
- /* nop */
-}
+#if EV_MULTIPLICITY
+ struct ev_loop *loop = default_loop;
+#endif
-void
-ev_fork_parent (void)
-{
- /* nop */
+#ifndef _WIN32
+ ev_ref (EV_A); /* child watcher */
+ ev_signal_stop (EV_A_ &childev);
+#endif
+
+ ev_ref (EV_A); /* signal watcher */
+ ev_io_stop (EV_A_ &sigev);
+
+ close (sigpipe [0]); sigpipe [0] = 0;
+ close (sigpipe [1]); sigpipe [1] = 0;
+
+ loop_destroy (EV_A);
}
void
-ev_fork_child (void)
+ev_default_fork (void)
{
-#if EV_USE_EPOLL
- if (method == EVMETHOD_EPOLL)
- epoll_postfork_child ();
+#if EV_MULTIPLICITY
+ struct ev_loop *loop = default_loop;
#endif
- ev_io_stop (&sigev);
- close (sigpipe [0]);
- close (sigpipe [1]);
- pipe (sigpipe);
- siginit ();
+ if (method)
+ postfork = 1;
}
/*****************************************************************************/
+static int
+any_pending (EV_P)
+{
+ int pri;
+
+ for (pri = NUMPRI; pri--; )
+ if (pendingcnt [pri])
+ return 1;
+
+ return 0;
+}
+
static void
call_pending (EV_P)
{
if (p->w)
{
p->w->pending = 0;
- p->w->cb (EV_A_ p->w, p->events);
+ EV_CB_INVOKE (p->w, p->events);
}
}
}
static void
timers_reify (EV_P)
{
- while (timercnt && timers [0]->at <= mn_now)
+ while (timercnt && ((WT)timers [0])->at <= mn_now)
{
struct ev_timer *w = timers [0];
+ assert (("inactive timer on timer heap detected", ev_is_active (w)));
+
/* first reschedule or stop timer */
if (w->repeat)
{
assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
- w->at = mn_now + w->repeat;
+
+ ((WT)w)->at += w->repeat;
+ if (((WT)w)->at < mn_now)
+ ((WT)w)->at = mn_now;
+
downheap ((WT *)timers, timercnt, 0);
}
else
ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
- event ((W)w, EV_TIMEOUT);
+ ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
}
}
+#if EV_PERIODICS
static void
periodics_reify (EV_P)
{
- while (periodiccnt && periodics [0]->at <= rt_now)
+ while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
{
struct ev_periodic *w = periodics [0];
+ assert (("inactive timer on periodic heap detected", ev_is_active (w)));
+
/* first reschedule or stop timer */
- if (w->interval)
+ if (w->reschedule_cb)
{
- w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
- assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
+ ((WT)w)->at = 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);
+ }
+ else if (w->interval)
+ {
+ ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
+ assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
downheap ((WT *)periodics, periodiccnt, 0);
}
else
ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
- event (EV_A_ (W)w, EV_PERIODIC);
+ ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
}
}
static void
-periodics_reschedule (EV_P_ ev_tstamp diff)
+periodics_reschedule (EV_P)
{
int i;
{
struct ev_periodic *w = periodics [i];
- if (w->interval)
- {
- ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
-
- if (fabs (diff) >= 1e-4)
- {
- ev_periodic_stop (EV_A_ w);
- ev_periodic_start (EV_A_ w);
-
- i = 0; /* restart loop, inefficient, but time jumps should be rare */
- }
- }
+ 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;
}
+
+ /* now rebuild the heap */
+ for (i = periodiccnt >> 1; i--; )
+ downheap ((WT *)periodics, periodiccnt, i);
}
+#endif
inline int
time_update_monotonic (EV_P)
if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
{
- rt_now = mn_now + diff;
+ ev_rt_now = rtmn_diff + mn_now;
return 0;
}
else
{
now_floor = mn_now;
- rt_now = ev_time ();
+ ev_rt_now = ev_time ();
return 1;
}
}
{
if (time_update_monotonic (EV_A))
{
- ev_tstamp odiff = diff;
+ ev_tstamp odiff = rtmn_diff;
for (i = 4; --i; ) /* loop a few times, before making important decisions */
{
- diff = rt_now - mn_now;
+ rtmn_diff = ev_rt_now - mn_now;
- if (fabs (odiff - diff) < MIN_TIMEJUMP)
+ if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
return; /* all is well */
- rt_now = ev_time ();
+ ev_rt_now = ev_time ();
mn_now = get_clock ();
now_floor = mn_now;
}
- periodics_reschedule (EV_A_ diff - odiff);
+# if EV_PERIODICS
+ periodics_reschedule (EV_A);
+# endif
/* no timer adjustment, as the monotonic clock doesn't jump */
+ /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
}
}
else
#endif
{
- rt_now = ev_time ();
+ ev_rt_now = ev_time ();
- if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
+ if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
{
- periodics_reschedule (EV_A_ rt_now - mn_now);
+#if EV_PERIODICS
+ periodics_reschedule (EV_A);
+#endif
/* adjust timers. this is easy, as the offset is the same for all */
for (i = 0; i < timercnt; ++i)
- timers [i]->at += diff;
+ ((WT)timers [i])->at += ev_rt_now - mn_now;
}
- mn_now = rt_now;
+ mn_now = ev_rt_now;
}
}
call_pending (EV_A);
}
+ /* we might have forked, so reify kernel state if necessary */
+ if (expect_false (postfork))
+ loop_fork (EV_A);
+
/* update fd-related kernel structures */
fd_reify (EV_A);
/* calculate blocking time */
- /* we only need this for !monotonic clockor timers, but as we basically
+ /* we only need this for !monotonic clock or timers, but as we basically
always have timers, we just calculate it always */
#if EV_USE_MONOTONIC
if (expect_true (have_monotonic))
else
#endif
{
- rt_now = ev_time ();
- mn_now = rt_now;
+ ev_rt_now = ev_time ();
+ mn_now = ev_rt_now;
}
if (flags & EVLOOP_NONBLOCK || idlecnt)
if (timercnt)
{
- ev_tstamp to = timers [0]->at - mn_now + method_fudge;
+ ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
if (block > to) block = to;
}
+#if EV_PERIODICS
if (periodiccnt)
{
- ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
+ ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
if (block > to) block = to;
}
+#endif
if (block < 0.) block = 0.;
}
method_poll (EV_A_ block);
- /* update rt_now, do magic */
+ /* 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
periodics_reify (EV_A); /* absolute timers called first */
+#endif
/* queue idle watchers unless io or timers are pending */
- if (!pendingcnt)
+ if (idlecnt && !any_pending (EV_A))
queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
/* queue check watchers, to be executed first */
assert (("ev_io_start called with negative fd", fd >= 0));
ev_start (EV_A_ (W)w, 1);
- array_needsize (anfds, anfdmax, fd + 1, anfds_init);
+ array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
wlist_add ((WL *)&anfds[fd].head, (WL)w);
fd_change (EV_A_ fd);
if (!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);
ev_stop (EV_A_ (W)w);
if (ev_is_active (w))
return;
- w->at += mn_now;
+ ((WT)w)->at += mn_now;
assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
ev_start (EV_A_ (W)w, ++timercnt);
- array_needsize (timers, timermax, timercnt, );
+ array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
timers [timercnt - 1] = w;
upheap ((WT *)timers, timercnt - 1);
+
+ assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
}
void
if (!ev_is_active (w))
return;
- if (w->active < timercnt--)
+ assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
+
+ if (((W)w)->active < timercnt--)
{
- timers [w->active - 1] = timers [timercnt];
- downheap ((WT *)timers, timercnt, w->active - 1);
+ timers [((W)w)->active - 1] = timers [timercnt];
+ adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
}
- w->at = w->repeat;
+ ((WT)w)->at -= mn_now;
ev_stop (EV_A_ (W)w);
}
{
if (w->repeat)
{
- w->at = mn_now + w->repeat;
- downheap ((WT *)timers, timercnt, w->active - 1);
+ ((WT)w)->at = mn_now + w->repeat;
+ adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
}
else
ev_timer_stop (EV_A_ w);
ev_timer_start (EV_A_ w);
}
+#if EV_PERIODICS
void
ev_periodic_start (EV_P_ struct ev_periodic *w)
{
if (ev_is_active (w))
return;
- 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 */
- if (w->interval)
- w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
+ if (w->reschedule_cb)
+ ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
+ else if (w->interval)
+ {
+ 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;
+ }
ev_start (EV_A_ (W)w, ++periodiccnt);
- array_needsize (periodics, periodicmax, periodiccnt, );
+ array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
periodics [periodiccnt - 1] = w;
upheap ((WT *)periodics, periodiccnt - 1);
+
+ assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
}
void
if (!ev_is_active (w))
return;
- if (w->active < periodiccnt--)
+ assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
+
+ if (((W)w)->active < periodiccnt--)
{
- periodics [w->active - 1] = periodics [periodiccnt];
- downheap ((WT *)periodics, periodiccnt, w->active - 1);
+ periodics [((W)w)->active - 1] = periodics [periodiccnt];
+ adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
}
ev_stop (EV_A_ (W)w);
}
-#ifndef SA_RESTART
-# define SA_RESTART 0
+void
+ev_periodic_again (EV_P_ struct ev_periodic *w)
+{
+ /* TODO: use adjustheap and recalculation */
+ ev_periodic_stop (EV_A_ w);
+ ev_periodic_start (EV_A_ w);
+}
#endif
void
-ev_signal_start (EV_P_ struct ev_signal *w)
+ev_idle_start (EV_P_ struct ev_idle *w)
{
if (ev_is_active (w))
return;
- assert (("ev_signal_start called with illegal signal number", w->signum > 0));
-
- ev_start (EV_A_ (W)w, 1);
- array_needsize (signals, signalmax, w->signum, signals_init);
- wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
-
- if (!w->next)
- {
- 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);
- }
+ ev_start (EV_A_ (W)w, ++idlecnt);
+ array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
+ idles [idlecnt - 1] = w;
}
void
-ev_signal_stop (EV_P_ struct ev_signal *w)
+ev_idle_stop (EV_P_ struct ev_idle *w)
{
ev_clear_pending (EV_A_ (W)w);
if (!ev_is_active (w))
return;
- wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
+ idles [((W)w)->active - 1] = idles [--idlecnt];
ev_stop (EV_A_ (W)w);
-
- if (!signals [w->signum - 1].head)
- signal (w->signum, SIG_DFL);
}
void
-ev_idle_start (EV_P_ struct ev_idle *w)
+ev_prepare_start (EV_P_ struct ev_prepare *w)
{
if (ev_is_active (w))
return;
- ev_start (EV_A_ (W)w, ++idlecnt);
- array_needsize (idles, idlemax, idlecnt, );
- idles [idlecnt - 1] = w;
+ ev_start (EV_A_ (W)w, ++preparecnt);
+ array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
+ prepares [preparecnt - 1] = w;
}
void
-ev_idle_stop (EV_P_ struct ev_idle *w)
+ev_prepare_stop (EV_P_ struct ev_prepare *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (ev_is_active (w))
+ if (!ev_is_active (w))
return;
- idles [w->active - 1] = idles [--idlecnt];
+ prepares [((W)w)->active - 1] = prepares [--preparecnt];
ev_stop (EV_A_ (W)w);
}
void
-ev_prepare_start (EV_P_ struct ev_prepare *w)
+ev_check_start (EV_P_ struct ev_check *w)
{
if (ev_is_active (w))
return;
- ev_start (EV_A_ (W)w, ++preparecnt);
- array_needsize (prepares, preparemax, preparecnt, );
- prepares [preparecnt - 1] = w;
+ ev_start (EV_A_ (W)w, ++checkcnt);
+ array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
+ checks [checkcnt - 1] = w;
}
void
-ev_prepare_stop (EV_P_ struct ev_prepare *w)
+ev_check_stop (EV_P_ struct ev_check *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (ev_is_active (w))
+ if (!ev_is_active (w))
return;
- prepares [w->active - 1] = prepares [--preparecnt];
+ checks [((W)w)->active - 1] = checks [--checkcnt];
ev_stop (EV_A_ (W)w);
}
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+
void
-ev_check_start (EV_P_ struct ev_check *w)
+ev_signal_start (EV_P_ struct ev_signal *w)
{
+#if EV_MULTIPLICITY
+ assert (("signal watchers are only supported in the default loop", loop == default_loop));
+#endif
if (ev_is_active (w))
return;
- ev_start (EV_A_ (W)w, ++checkcnt);
- array_needsize (checks, checkmax, checkcnt, );
- checks [checkcnt - 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_check_stop (EV_P_ struct ev_check *w)
+ev_signal_stop (EV_P_ struct ev_signal *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (ev_is_active (w))
+ if (!ev_is_active (w))
return;
- checks [w->active - 1] = checks [--checkcnt];
+ wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
ev_stop (EV_A_ (W)w);
+
+ if (!signals [w->signum - 1].head)
+ signal (w->signum, SIG_DFL);
}
void
ev_child_start (EV_P_ struct ev_child *w)
{
+#if EV_MULTIPLICITY
+ assert (("child watchers are only supported in the default loop", loop == default_loop));
+#endif
if (ev_is_active (w))
return;
ev_child_stop (EV_P_ struct ev_child *w)
{
ev_clear_pending (EV_A_ (W)w);
- if (ev_is_active (w))
+ if (!ev_is_active (w))
return;
wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
ev_io_stop (EV_A_ &once->io);
ev_timer_stop (EV_A_ &once->to);
- free (once);
+ ev_free (once);
cb (revents, arg);
}
void
ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
{
- struct ev_once *once = malloc (sizeof (struct ev_once));
+ 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);
once->cb = cb;
once->arg = arg;
- ev_watcher_init (&once->io, once_cb_io);
+ 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_watcher_init (&once->to, once_cb_to);
+ ev_init (&once->to, once_cb_to);
if (timeout >= 0.)
{
ev_timer_set (&once->to, timeout, 0.);
}
}
-/*****************************************************************************/
-
-#if 0
-
-struct ev_io wio;
-
-static void
-sin_cb (struct ev_io *w, int revents)
-{
- fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
-}
-
-static void
-ocb (struct ev_timer *w, int revents)
-{
- //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
- ev_timer_stop (w);
- ev_timer_start (w);
-}
-
-static void
-scb (struct ev_signal *w, int revents)
-{
- fprintf (stderr, "signal %x,%d\n", revents, w->signum);
- ev_io_stop (&wio);
- ev_io_start (&wio);
-}
-
-static void
-gcb (struct ev_signal *w, int revents)
-{
- fprintf (stderr, "generic %x\n", revents);
-
-}
-
-int main (void)
-{
- ev_init (0);
-
- ev_io_init (&wio, sin_cb, 0, EV_READ);
- ev_io_start (&wio);
-
- struct ev_timer t[10000];
-
-#if 0
- int i;
- for (i = 0; i < 10000; ++i)
- {
- struct ev_timer *w = t + i;
- ev_watcher_init (w, ocb, i);
- ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
- ev_timer_start (w);
- if (drand48 () < 0.5)
- ev_timer_stop (w);
- }
-#endif
-
- struct ev_timer t1;
- ev_timer_init (&t1, ocb, 5, 10);
- ev_timer_start (&t1);
-
- struct ev_signal sig;
- ev_signal_init (&sig, scb, SIGQUIT);
- ev_signal_start (&sig);
-
- struct ev_check cw;
- ev_check_init (&cw, gcb);
- ev_check_start (&cw);
-
- struct ev_idle iw;
- ev_idle_init (&iw, gcb);
- ev_idle_start (&iw);
-
- ev_loop (0);
-
- return 0;
+#ifdef __cplusplus
}
-
#endif
-
-
-
projects / software / libev.git / blobdiff