X-Git-Url: https://git.llucax.com/software/libev.git/blobdiff_plain/3afd3cb9621ee33f64911951a1a9a8f0a42acf29..23f51f36bfcf6f217b2a14967f968af5dd4675e7:/ev.c diff --git a/ev.c b/ev.c index 3903a6c..08612aa 100644 --- a/ev.c +++ b/ev.c @@ -43,26 +43,53 @@ extern "C" { # 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) -# 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) -# 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 - -# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) -# define EV_USE_PORT 1 + +# 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 @@ -129,12 +156,6 @@ extern "C" { /**/ -/* 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 @@ -439,7 +460,7 @@ fd_reify (EV_P) anfd->reify = 0; - method_modify (EV_A_ fd, anfd->events, events); + backend_modify (EV_A_ fd, anfd->events, events); anfd->events = events; } @@ -507,7 +528,7 @@ fd_enomem (EV_P) } } -/* usually called after fork if method needs to re-arm all fds from scratch */ +/* usually called after fork if backend needs to re-arm all fds from scratch */ static void fd_rearm_all (EV_P) { @@ -760,15 +781,47 @@ enable_secure (void) } unsigned int -ev_method (EV_P) +ev_supported_backends (void) +{ + 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_recommended_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_backend (EV_P) { - return method; + return backend; } static void loop_init (EV_P_ unsigned int flags) { - if (!method) + if (!backend) { #if EV_USE_MONOTONIC { @@ -783,27 +836,29 @@ loop_init (EV_P_ unsigned int flags) now_floor = mn_now; rtmn_diff = ev_rt_now - mn_now; - if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) + if (!(flags & EVFLAG_NOENV) + && !enable_secure () + && getenv ("LIBEV_FLAGS")) flags = atoi (getenv ("LIBEV_FLAGS")); - if (!(flags & 0x0000ffff)) - flags |= 0x0000ffff; + if (!(flags & 0x0000ffffUL)) + flags |= ev_recommended_backends (); - method = 0; + backend = 0; #if EV_USE_PORT - if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); + if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); #endif #if EV_USE_KQUEUE - if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); + if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); #endif #if EV_USE_EPOLL - if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); + if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); #endif #if EV_USE_POLL - if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); + if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); #endif #if EV_USE_SELECT - if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); + if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); #endif ev_init (&sigev, sigcb); @@ -817,19 +872,19 @@ loop_destroy (EV_P) int i; #if EV_USE_PORT - if (method == EVMETHOD_PORT ) port_destroy (EV_A); + 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--; ) @@ -845,20 +900,20 @@ loop_destroy (EV_P) array_free (prepare, EMPTY0); array_free (check, EMPTY0); - method = 0; + backend = 0; } static void loop_fork (EV_P) { #if EV_USE_PORT - if (method == EVMETHOD_PORT ) port_fork (EV_A); + 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 (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); + if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); #endif if (ev_is_active (&sigev)) @@ -889,7 +944,7 @@ ev_loop_new (unsigned int flags) loop_init (EV_A_ flags); - if (ev_method (EV_A)) + if (ev_backend (EV_A)) return loop; return 0; @@ -932,7 +987,7 @@ ev_default_loop (unsigned int flags) loop_init (EV_A_ flags); - if (ev_method (EV_A)) + if (ev_backend (EV_A)) { siginit (EV_A); @@ -978,7 +1033,7 @@ ev_default_fork (void) struct ev_loop *loop = ev_default_loop_ptr; #endif - if (method) + if (backend) postfork = 1; } @@ -1220,14 +1275,14 @@ ev_loop (EV_P_ int flags) if (timercnt) { - ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; + ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; if (block > to) block = to; } #if EV_PERIODICS if (periodiccnt) { - ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; + ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; if (block > to) block = to; } #endif @@ -1235,7 +1290,7 @@ ev_loop (EV_P_ int flags) 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);