X-Git-Url: https://git.llucax.com/software/libev.git/blobdiff_plain/48151275f9dd2099bb2e98f47a341678182d9230..9ddee32d6b474c0c6041fbaefade615080892b9c:/ev.c?ds=inline diff --git a/ev.c b/ev.c index 8a32229..5124b2b 100644 --- a/ev.c +++ b/ev.c @@ -28,27 +28,36 @@ * (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 -# define EV_USE_MONOTONIC 1 -# define EV_USE_REALTIME 1 +# 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 +# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) # define EV_USE_SELECT 1 # endif -# if HAVE_POLL && HAVE_POLL_H +# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) # define EV_USE_POLL 1 # endif -# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H +# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) # define EV_USE_EPOLL 1 # endif -# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H +# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) # define EV_USE_KQUEUE 1 # endif @@ -128,7 +137,11 @@ #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)) @@ -150,7 +163,9 @@ typedef struct ev_watcher_time *WT; static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ -#include "ev_win32.c" +#ifdef WIN32 +# include "ev_win32.c" +#endif /*****************************************************************************/ @@ -217,25 +232,33 @@ typedef struct #if EV_MULTIPLICITY -struct ev_loop -{ -# define VAR(name,decl) decl; -# include "ev_vars.h" -}; -# undef VAR -# include "ev_wrap.h" + 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 -# define VAR(name,decl) static decl; -# include "ev_vars.h" -# undef VAR + ev_tstamp ev_rt_now; + #define VAR(name,decl) static decl; + #include "ev_vars.h" + #undef VAR + + static int default_loop; #endif /*****************************************************************************/ -inline ev_tstamp +ev_tstamp ev_time (void) { #if EV_USE_REALTIME @@ -264,11 +287,13 @@ get_clock (void) return ev_time (); } +#if EV_MULTIPLICITY ev_tstamp ev_now (EV_P) { - return rt_now; + return ev_rt_now; } +#endif #define array_roundsize(type,n) ((n) | 4 & ~3) @@ -344,21 +369,27 @@ queue_events (EV_P_ W *events, int eventcnt, int 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) 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 void @@ -505,6 +536,13 @@ downheap (WT *heap, int N, int k) ((W)heap [k])->active = k + 1; } +inline void +adjustheap (WT *heap, int N, int k) +{ + upheap (heap, k); + downheap (heap, N, k); +} + /*****************************************************************************/ typedef struct @@ -554,10 +592,29 @@ sighandler (int signum) } } +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) { - WL w; int signum; #ifdef WIN32 @@ -569,12 +626,7 @@ sigcb (EV_P_ struct ev_io *iow, int revents) for (signum = signalmax; signum--; ) if (signals [signum].gotsig) - { - signals [signum].gotsig = 0; - - for (w = signals [signum].head; w; w = w->next) - ev_feed_event (EV_A_ (W)w, EV_SIGNAL); - } + ev_feed_signal_event (EV_A_ signum + 1); } static void @@ -696,10 +748,10 @@ loop_init (EV_P_ int methods) } #endif - rt_now = ev_time (); + ev_rt_now = ev_time (); mn_now = get_clock (); now_floor = mn_now; - rtmn_diff = rt_now - mn_now; + rtmn_diff = ev_rt_now - mn_now; if (methods == EVMETHOD_AUTO) if (!enable_secure () && getenv ("LIBEV_METHODS")) @@ -724,7 +776,7 @@ loop_init (EV_P_ int methods) if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); #endif - ev_watcher_init (&sigev, sigcb); + ev_init (&sigev, sigcb); ev_set_priority (&sigev, EV_MAXPRI); } } @@ -756,7 +808,9 @@ loop_destroy (EV_P) /* have to use the microsoft-never-gets-it-right macro */ array_free_microshit (fdchange); array_free_microshit (timer); +#if EV_PERIODICS array_free_microshit (periodic); +#endif array_free_microshit (idle); array_free_microshit (prepare); array_free_microshit (check); @@ -824,13 +878,8 @@ ev_loop_fork (EV_P) #endif #if EV_MULTIPLICITY -struct ev_loop default_loop_struct; -static struct ev_loop *default_loop; - struct ev_loop * #else -static int default_loop; - int #endif ev_default_loop (int methods) @@ -926,7 +975,7 @@ 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); } } } @@ -944,7 +993,11 @@ timers_reify (EV_P) if (w->repeat) { assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); - ((WT)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 @@ -954,10 +1007,11 @@ timers_reify (EV_P) } } +#if EV_PERIODICS static void periodics_reify (EV_P) { - while (periodiccnt && ((WT)periodics [0])->at <= rt_now) + while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) { struct ev_periodic *w = periodics [0]; @@ -966,15 +1020,15 @@ periodics_reify (EV_P) /* first reschedule or stop timer */ if (w->reschedule_cb) { - ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); + ev_tstamp at = ((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 > rt_now)); + 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 ((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)); + ((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 @@ -995,15 +1049,16 @@ periodics_reschedule (EV_P) struct ev_periodic *w = periodics [i]; if (w->reschedule_cb) - ((WT)w)->at = w->reschedule_cb (w, rt_now); + ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); else if (w->interval) - ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * 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) @@ -1012,13 +1067,13 @@ time_update_monotonic (EV_P) if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) { - rt_now = rtmn_diff + mn_now; + 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; } } @@ -1037,17 +1092,19 @@ time_update (EV_P) for (i = 4; --i; ) /* loop a few times, before making important decisions */ { - rtmn_diff = rt_now - mn_now; + rtmn_diff = ev_rt_now - mn_now; 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; } +# 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) */ } @@ -1055,18 +1112,20 @@ time_update (EV_P) 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)) { +#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) - ((WT)timers [i])->at += rt_now - mn_now; + ((WT)timers [i])->at += ev_rt_now - mn_now; } - mn_now = rt_now; + mn_now = ev_rt_now; } } @@ -1116,8 +1175,8 @@ ev_loop (EV_P_ int flags) 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) @@ -1132,23 +1191,27 @@ ev_loop (EV_P_ int flags) if (block > to) block = to; } +#if EV_PERIODICS if (periodiccnt) { - ev_tstamp to = ((WT)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 (idlecnt && !any_pending (EV_A)) @@ -1249,6 +1312,8 @@ ev_io_stop (EV_P_ struct ev_io *w) 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); @@ -1285,10 +1350,10 @@ ev_timer_stop (EV_P_ struct ev_timer *w) if (((W)w)->active < timercnt--) { timers [((W)w)->active - 1] = timers [timercnt]; - downheap ((WT *)timers, timercnt, ((W)w)->active - 1); + adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); } - ((WT)w)->at = w->repeat; + ((WT)w)->at -= mn_now; ev_stop (EV_A_ (W)w); } @@ -1301,7 +1366,7 @@ ev_timer_again (EV_P_ struct ev_timer *w) if (w->repeat) { ((WT)w)->at = mn_now + w->repeat; - downheap ((WT *)timers, timercnt, ((W)w)->active - 1); + adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); } else ev_timer_stop (EV_A_ w); @@ -1310,6 +1375,7 @@ ev_timer_again (EV_P_ struct ev_timer *w) ev_timer_start (EV_A_ w); } +#if EV_PERIODICS void ev_periodic_start (EV_P_ struct ev_periodic *w) { @@ -1317,12 +1383,12 @@ ev_periodic_start (EV_P_ struct ev_periodic *w) return; if (w->reschedule_cb) - ((WT)w)->at = w->reschedule_cb (w, rt_now); + ((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 ((rt_now - ((WT)w)->at) / w->interval) * w->interval; + ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; } ev_start (EV_A_ (W)w, ++periodiccnt); @@ -1345,7 +1411,7 @@ ev_periodic_stop (EV_P_ struct ev_periodic *w) if (((W)w)->active < periodiccnt--) { periodics [((W)w)->active - 1] = periodics [periodiccnt]; - downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); + adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); } ev_stop (EV_A_ (W)w); @@ -1354,9 +1420,11 @@ ev_periodic_stop (EV_P_ struct ev_periodic *w) 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_idle_start (EV_P_ struct ev_idle *w) @@ -1373,7 +1441,7 @@ void ev_idle_stop (EV_P_ struct ev_idle *w) { ev_clear_pending (EV_A_ (W)w); - if (ev_is_active (w)) + if (!ev_is_active (w)) return; idles [((W)w)->active - 1] = idles [--idlecnt]; @@ -1395,7 +1463,7 @@ void 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; prepares [((W)w)->active - 1] = prepares [--preparecnt]; @@ -1417,7 +1485,7 @@ void 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; checks [((W)w)->active - 1] = checks [--checkcnt]; @@ -1488,7 +1556,7 @@ void 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); @@ -1542,14 +1610,14 @@ ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, vo 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.); @@ -1558,3 +1626,7 @@ ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, vo } } +#ifdef __cplusplus +} +#endif +