#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>
+#include <time.h>
+
+#include <signal.h>
+
#ifndef WIN32
+# include <unistd.h>
+# include <sys/time.h>
# include <sys/wait.h>
#endif
-#include <sys/time.h>
-#include <time.h>
-
/**/
#ifndef EV_USE_MONOTONIC
#ifndef EV_USE_WIN32
# ifdef WIN32
-# define EV_USE_WIN32 1
+# define EV_USE_WIN32 0 /* it does not exist, use select */
+# undef EV_USE_SELECT
+# define EV_USE_SELECT 1
# else
# define EV_USE_WIN32 0
# endif
static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
+#include "ev_win32.c"
+
+/*****************************************************************************/
+
+static void (*syserr_cb)(const char *msg);
+
+void ev_set_syserr_cb (void (*cb)(const char *msg))
+{
+ syserr_cb = cb;
+}
+
+static void
+syserr (const char *msg)
+{
+ if (!msg)
+ msg = "(libev) system error";
+
+ 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)
+
/*****************************************************************************/
typedef struct
{
- struct ev_watcher_list *head;
+ WL head;
unsigned char events;
unsigned char reify;
} ANFD;
return rt_now;
}
-#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*/\
}
+/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
+/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
+#define array_free_microshit(stem) \
+ ev_free (stem ## s); stem ## cnt = stem ## max = 0;
+
+#define array_free(stem, idx) \
+ ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
+
/*****************************************************************************/
static void
}
w->pending = ++pendingcnt [ABSPRI (w)];
- array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], 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 = events;
}
anfd->reify = 0;
- if (anfd->events != events)
- {
- method_modify (EV_A_ fd, anfd->events, events);
- anfd->events = events;
- }
+ 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;
}
}
}
+static int
+fd_valid (int fd)
+{
+#ifdef WIN32
+ return !!win32_get_osfhandle (fd);
+#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);
}
for (fd = anfdmax; fd--; )
if (anfds [fd].events)
{
- close (fd);
fd_kill (EV_A_ fd);
return;
}
}
-/* susually called after fork if method needs to re-arm all fds from scratch */
+/* usually called after fork if method needs to re-arm all fds from scratch */
static void
fd_rearm_all (EV_P)
{
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)
{
int old_errno = errno;
gotsig = 1;
+#ifdef WIN32
+ send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
+#else
write (sigpipe [1], &signum, 1);
+#endif
errno = old_errno;
}
}
static void
sigcb (EV_P_ struct ev_io *iow, int revents)
{
- struct ev_watcher_list *w;
+ WL w;
int signum;
+#ifdef WIN32
+ recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
+#else
read (sigpipe [0], &revents, 1);
+#endif
gotsig = 0;
for (signum = signalmax; signum--; )
/*****************************************************************************/
+static struct ev_child *childs [PID_HASHSIZE];
+
#ifndef WIN32
-static struct ev_child *childs [PID_HASHSIZE];
static struct ev_signal childev;
#ifndef WCONTINUED
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;
+ ev_priority (w) = ev_priority (sw); /* need to do it *now* */
+ w->rpid = pid;
+ w->rstatus = status;
event (EV_A_ (W)w, EV_CHILD);
}
}
#if EV_USE_SELECT
if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
#endif
+
+ ev_watcher_init (&sigev, sigcb);
+ ev_set_priority (&sigev, EV_MAXPRI);
}
}
void
loop_destroy (EV_P)
{
+ int i;
+
#if EV_USE_WIN32
if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
#endif
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_microshit (fdchange);
+ array_free_microshit (timer);
+ array_free_microshit (periodic);
+ array_free_microshit (idle);
+ array_free_microshit (prepare);
+ array_free_microshit (check);
+
method = 0;
- /*TODO*/
}
-void
+static void
loop_fork (EV_P)
{
- /*TODO*/
#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 (int methods)
{
- struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
+ 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);
ev_loop_destroy (EV_P)
{
loop_destroy (EV_A);
- free (loop);
+ ev_free (loop);
}
void
ev_loop_fork (EV_P)
{
- loop_fork (EV_A);
+ postfork = 1;
}
#endif
if (ev_method (EV_A))
{
- ev_watcher_init (&sigev, sigcb);
- ev_set_priority (&sigev, EV_MAXPRI);
siginit (EV_A);
#ifndef WIN32
struct ev_loop *loop = default_loop;
#endif
+#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);
struct ev_loop *loop = default_loop;
#endif
- loop_fork (EV_A);
-
- ev_io_stop (EV_A_ &sigev);
- close (sigpipe [0]);
- close (sigpipe [1]);
- pipe (sigpipe);
-
- ev_ref (EV_A); /* signal watcher */
- siginit (EV_A);
+ if (method)
+ postfork = 1;
}
/*****************************************************************************/
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];
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 = mn_now + w->repeat;
downheap ((WT *)timers, timercnt, 0);
}
else
static void
periodics_reify (EV_P)
{
- while (periodiccnt && periodics [0]->at <= rt_now)
+ while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
{
struct ev_periodic *w = periodics [0];
/* first reschedule or stop timer */
if (w->interval)
{
- 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 += floor ((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 > rt_now));
downheap ((WT *)periodics, periodiccnt, 0);
}
else
if (w->interval)
{
- ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
+ ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
if (fabs (diff) >= 1e-4)
{
/* adjust timers. this is easy, as the offset is the same for all */
for (i = 0; i < timercnt; ++i)
- timers [i]->at += rt_now - mn_now;
+ ((WT)timers [i])->at += rt_now - mn_now;
}
mn_now = 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);
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 (periodiccnt)
{
- ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
+ ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
if (block > to) block = to;
}
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;
- 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);
downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
}
- w->at = w->repeat;
+ ((WT)w)->at = w->repeat;
ev_stop (EV_A_ (W)w);
}
{
if (w->repeat)
{
- w->at = mn_now + w->repeat;
+ ((WT)w)->at = mn_now + w->repeat;
downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
}
else
/* 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;
+ ((WT)w)->at += ceil ((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);
return;
ev_start (EV_A_ (W)w, ++idlecnt);
- array_needsize (idles, idlemax, idlecnt, );
+ array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
idles [idlecnt - 1] = w;
}
return;
ev_start (EV_A_ (W)w, ++preparecnt);
- array_needsize (prepares, preparemax, preparecnt, );
+ array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
prepares [preparecnt - 1] = w;
}
return;
ev_start (EV_A_ (W)w, ++checkcnt);
- array_needsize (checks, checkmax, checkcnt, );
+ array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
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 (signals, signalmax, w->signum, signals_init);
+ array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
- if (!w->next)
+ 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_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);
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