static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
+#if WIN32
+/* note: the comment below could not be substantiated, but what would I care */
+/* MSDN says this is required to handle SIGFPE */
+volatile double SIGFPE_REQ = 0.0f;
+#endif
+
+/*****************************************************************************/
+
+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;
#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_needsize(base,cur,cnt,init) \
+ if (expect_false ((cnt) > cur)) \
+ { \
+ int newcnt = cur; \
+ do \
+ { \
+ newcnt = array_roundsize (base, newcnt << 1); \
+ } \
+ while ((cnt) > newcnt); \
+ \
+ base = ev_realloc (base, sizeof (*base) * (newcnt)); \
+ init (base + cur, newcnt - cur); \
+ cur = newcnt; \
}
+#define array_slim(stem) \
+ if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
+ { \
+ stem ## max = array_roundsize (stem ## cnt >> 1); \
+ base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
+ fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
+ }
+
+#define array_free(stem, idx) \
+ ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
+
/*****************************************************************************/
static void
static void
fd_change (EV_P_ int fd)
{
- if (anfds [fd].reify || fdchangecnt < 0)
+ if (anfds [fd].reify)
return;
anfds [fd].reify = 1;
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)
static void
sigcb (EV_P_ struct ev_io *iow, int revents)
{
- struct ev_watcher_list *w;
+ WL w;
int signum;
read (sigpipe [0], &revents, 1);
#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]);
+
+ array_free (fdchange, );
+ array_free (timer, );
+ array_free (periodic, );
+ array_free (idle, );
+ array_free (prepare, );
+ array_free (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
- 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;
}
/*****************************************************************************/
if (p->w)
{
p->w->pending = 0;
-
- (*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
+ p->w->cb (EV_A_ p->w, p->events);
}
}
}
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 (!((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 = ev_malloc (sizeof (struct ev_once));
if (!once)
cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
projects / software / libev.git / blobdiff