--- libev/ev.c 2007/11/12 05:40:55 1.108 +++ libev/ev.c 2008/05/06 15:29:58 1.232 @@ -1,40 +1,53 @@ /* * libev event processing core, watcher management * - * Copyright (c) 2007 Marc Alexander Lehmann + * Copyright (c) 2007,2008 Marc Alexander Lehmann * All rights reserved. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. */ #ifdef __cplusplus extern "C" { #endif +/* this big block deduces configuration from config.h */ #ifndef EV_STANDALONE -# include "config.h" +# ifdef EV_CONFIG_H +# include EV_CONFIG_H +# else +# include "config.h" +# endif # if HAVE_CLOCK_GETTIME # ifndef EV_USE_MONOTONIC @@ -43,24 +56,79 @@ # 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_NANOSLEEP +# if HAVE_NANOSLEEP +# define EV_USE_NANOSLEEP 1 +# else +# define EV_USE_NANOSLEEP 0 +# endif # endif -# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) -# define EV_USE_POLL 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_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) -# define EV_USE_EPOLL 1 +# ifndef EV_USE_POLL +# if HAVE_POLL && HAVE_POLL_H +# define EV_USE_POLL 1 +# else +# define EV_USE_POLL 0 +# endif +# endif + +# 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 + +# 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 + +# ifndef EV_USE_PORT +# if HAVE_PORT_H && HAVE_PORT_CREATE +# define EV_USE_PORT 1 +# else +# define EV_USE_PORT 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_INOTIFY +# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H +# define EV_USE_INOTIFY 1 +# else +# define EV_USE_INOTIFY 0 +# endif # endif +# ifndef EV_USE_EVENTFD +# if HAVE_EVENTFD +# define EV_USE_EVENTFD 1 +# else +# define EV_USE_EVENTFD 0 +# endif +# endif + #endif #include @@ -77,10 +145,16 @@ #include +#ifdef EV_H +# include EV_H +#else +# include "ev.h" +#endif + #ifndef _WIN32 -# include # include # include +# include #else # define WIN32_LEAN_AND_MEAN # include @@ -89,15 +163,22 @@ # endif #endif -/**/ +/* this block tries to deduce configuration from header-defined symbols and defaults */ #ifndef EV_USE_MONOTONIC -# define EV_USE_MONOTONIC 1 +# define EV_USE_MONOTONIC 0 +#endif + +#ifndef EV_USE_REALTIME +# define EV_USE_REALTIME 0 +#endif + +#ifndef EV_USE_NANOSLEEP +# define EV_USE_NANOSLEEP 0 #endif #ifndef EV_USE_SELECT # define EV_USE_SELECT 1 -# define EV_SELECT_USE_FD_SET 1 #endif #ifndef EV_USE_POLL @@ -109,25 +190,55 @@ #endif #ifndef EV_USE_EPOLL -# define EV_USE_EPOLL 0 +# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) +# define EV_USE_EPOLL 1 +# else +# define EV_USE_EPOLL 0 +# endif #endif #ifndef EV_USE_KQUEUE # define EV_USE_KQUEUE 0 #endif -#ifndef EV_USE_REALTIME -# define EV_USE_REALTIME 1 +#ifndef EV_USE_PORT +# define EV_USE_PORT 0 #endif -/**/ +#ifndef EV_USE_INOTIFY +# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) +# define EV_USE_INOTIFY 1 +# else +# define EV_USE_INOTIFY 0 +# endif +#endif -/* darwin simply cannot be helped */ -#ifdef __APPLE__ -# undef EV_USE_POLL -# undef EV_USE_KQUEUE +#ifndef EV_PID_HASHSIZE +# if EV_MINIMAL +# define EV_PID_HASHSIZE 1 +# else +# define EV_PID_HASHSIZE 16 +# endif +#endif + +#ifndef EV_INOTIFY_HASHSIZE +# if EV_MINIMAL +# define EV_INOTIFY_HASHSIZE 1 +# else +# define EV_INOTIFY_HASHSIZE 16 +# endif +#endif + +#ifndef EV_USE_EVENTFD +# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) +# define EV_USE_EVENTFD 1 +# else +# define EV_USE_EVENTFD 0 +# endif #endif +/* this block fixes any misconfiguration where we know we run into trouble otherwise */ + #ifndef CLOCK_MONOTONIC # undef EV_USE_MONOTONIC # define EV_USE_MONOTONIC 0 @@ -138,44 +249,92 @@ # define EV_USE_REALTIME 0 #endif +#if !EV_STAT_ENABLE +# undef EV_USE_INOTIFY +# define EV_USE_INOTIFY 0 +#endif + +#if !EV_USE_NANOSLEEP +# ifndef _WIN32 +# include +# endif +#endif + +#if EV_USE_INOTIFY +# include +#endif + #if EV_SELECT_IS_WINSOCKET # include #endif +#if EV_USE_EVENTFD +/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ +# include +# ifdef __cplusplus +extern "C" { +# endif +int eventfd (unsigned int initval, int flags); +# ifdef __cplusplus +} +# endif +#endif + /**/ -#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ -#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ -#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 */ +/* + * This is used to avoid floating point rounding problems. + * It is added to ev_rt_now when scheduling periodics + * to ensure progress, time-wise, even when rounding + * errors are against us. + * This value is good at least till the year 4000. + * Better solutions welcome. + */ +#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ -#ifdef EV_H -# include EV_H -#else -# include "ev.h" -#endif +#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ +#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ +/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ -#if __GNUC__ >= 3 +#if __GNUC__ >= 4 # define expect(expr,value) __builtin_expect ((expr),(value)) -# define inline inline +# define noinline __attribute__ ((noinline)) #else # define expect(expr,value) (expr) -# define inline static +# define noinline +# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 +# define inline +# endif #endif #define expect_false(expr) expect ((expr) != 0, 0) #define expect_true(expr) expect ((expr) != 0, 1) +#define inline_size static inline + +#if EV_MINIMAL +# define inline_speed static noinline +#else +# define inline_speed static inline +#endif #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) -#define ABSPRI(w) ((w)->priority - EV_MINPRI) +#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) + +#define EMPTY /* required for microsofts broken pseudo-c compiler */ +#define EMPTY2(a,b) /* used to suppress some warnings */ -#define EMPTY /* required for microsofts broken pseudo-c compiler */ +typedef ev_watcher *W; +typedef ev_watcher_list *WL; +typedef ev_watcher_time *WT; -typedef struct ev_watcher *W; -typedef struct ev_watcher_list *WL; -typedef struct ev_watcher_time *WT; +#define ev_active(w) ((W)(w))->active +#define ev_at(w) ((WT)(w))->at -static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ +#if EV_USE_MONOTONIC +/* sig_atomic_t is used to avoid per-thread variables or locking but still */ +/* giving it a reasonably high chance of working on typical architetcures */ +static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ +#endif #ifdef _WIN32 # include "ev_win32.c" @@ -185,12 +344,13 @@ static void (*syserr_cb)(const char *msg); -void ev_set_syserr_cb (void (*cb)(const char *msg)) +void +ev_set_syserr_cb (void (*cb)(const char *msg)) { syserr_cb = cb; } -static void +static void noinline syserr (const char *msg) { if (!msg) @@ -205,17 +365,33 @@ } } -static void *(*alloc)(void *ptr, long size); +static void * +ev_realloc_emul (void *ptr, long size) +{ + /* some systems, notably openbsd and darwin, fail to properly + * implement realloc (x, 0) (as required by both ansi c-98 and + * the single unix specification, so work around them here. + */ + + if (size) + return realloc (ptr, size); + + free (ptr); + return 0; +} + +static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; -void ev_set_allocator (void *(*cb)(void *ptr, long size)) +void +ev_set_allocator (void *(*cb)(void *ptr, long size)) { alloc = cb; } -static void * +inline_speed void * ev_realloc (void *ptr, long size) { - ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); + ptr = alloc (ptr, size); if (!ptr && size) { @@ -247,6 +423,13 @@ int events; } ANPENDING; +#if EV_USE_INOTIFY +typedef struct +{ + WL head; +} ANFS; +#endif + #if EV_MULTIPLICITY struct ev_loop @@ -259,8 +442,8 @@ }; #include "ev_wrap.h" - struct ev_loop default_loop_struct; - static struct ev_loop *default_loop; + static struct ev_loop default_loop_struct; + struct ev_loop *ev_default_loop_ptr; #else @@ -269,7 +452,7 @@ #include "ev_vars.h" #undef VAR - static int default_loop; + static int ev_default_loop_ptr; #endif @@ -289,7 +472,7 @@ #endif } -inline ev_tstamp +ev_tstamp inline_size get_clock (void) { #if EV_USE_MONOTONIC @@ -312,23 +495,73 @@ } #endif -#define array_roundsize(type,n) (((n) | 4) & ~3) +void +ev_sleep (ev_tstamp delay) +{ + if (delay > 0.) + { +#if EV_USE_NANOSLEEP + struct timespec ts; + + ts.tv_sec = (time_t)delay; + ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); + + nanosleep (&ts, 0); +#elif defined(_WIN32) + Sleep ((unsigned long)(delay * 1e3)); +#else + struct timeval tv; + + tv.tv_sec = (time_t)delay; + tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); + + select (0, 0, 0, 0, &tv); +#endif + } +} + +/*****************************************************************************/ + +#define MALLOC_ROUND 4096 // prefer to allocate in chunks of this size, must be 2**n and >> 4 longs + +int inline_size +array_nextsize (int elem, int cur, int cnt) +{ + int ncur = cur + 1; + + do + ncur <<= 1; + while (cnt > ncur); + + /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ + if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) + { + ncur *= elem; + ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); + ncur = ncur - sizeof (void *) * 4; + ncur /= elem; + } + + return ncur; +} + +static noinline void * +array_realloc (int elem, void *base, int *cur, int cnt) +{ + *cur = array_nextsize (elem, *cur, cnt); + return ev_realloc (base, elem * *cur); +} #define array_needsize(type,base,cur,cnt,init) \ - if (expect_false ((cnt) > cur)) \ + 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; \ + int ocur_ = (cur); \ + (base) = (type *)array_realloc \ + (sizeof (type), (base), &(cur), (cnt)); \ + init ((base) + (ocur_), (cur) - ocur_); \ } +#if 0 #define array_slim(type,stem) \ if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ { \ @@ -336,43 +569,31 @@ base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ } +#endif #define array_free(stem, idx) \ ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; /*****************************************************************************/ -static void -anfds_init (ANFD *base, int count) -{ - while (count--) - { - base->head = 0; - base->events = EV_NONE; - base->reify = 0; - - ++base; - } -} - -void +void noinline ev_feed_event (EV_P_ void *w, int revents) { W w_ = (W)w; + int pri = ABSPRI (w_); - if (w_->pending) + if (expect_false (w_->pending)) + pendings [pri][w_->pending - 1].events |= revents; + else { - pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; - return; + w_->pending = ++pendingcnt [pri]; + array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); + pendings [pri][w_->pending - 1].w = w_; + pendings [pri][w_->pending - 1].events = revents; } - - 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 +void inline_speed queue_events (EV_P_ W *events, int eventcnt, int type) { int i; @@ -381,13 +602,28 @@ ev_feed_event (EV_A_ events [i], type); } -inline void +/*****************************************************************************/ + +void inline_size +anfds_init (ANFD *base, int count) +{ + while (count--) + { + base->head = 0; + base->events = EV_NONE; + base->reify = 0; + + ++base; + } +} + +void inline_speed fd_event (EV_P_ int fd, int revents) { ANFD *anfd = anfds + fd; - struct ev_io *w; + ev_io *w; - for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) + for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) { int ev = w->events & revents; @@ -399,12 +635,11 @@ void ev_feed_fd_event (EV_P_ int fd, int revents) { - fd_event (EV_A_ fd, revents); + if (fd >= 0 && fd < anfdmax) + fd_event (EV_A_ fd, revents); } -/*****************************************************************************/ - -static void +void inline_size fd_reify (EV_P) { int i; @@ -413,57 +648,68 @@ { int fd = fdchanges [i]; ANFD *anfd = anfds + fd; - struct ev_io *w; + ev_io *w; - int events = 0; + unsigned char events = 0; - for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) - events |= w->events; + for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) + events |= (unsigned char)w->events; #if EV_SELECT_IS_WINSOCKET if (events) { unsigned long argp; - anfd->handle = _get_osfhandle (fd); + #ifdef EV_FD_TO_WIN32_HANDLE + anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); + #else + anfd->handle = _get_osfhandle (fd); + #endif assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); } #endif - anfd->reify = 0; + { + unsigned char o_events = anfd->events; + unsigned char o_reify = anfd->reify; + + anfd->reify = 0; + anfd->events = events; - method_modify (EV_A_ fd, anfd->events, events); - anfd->events = events; + if (o_events != events || o_reify & EV_IOFDSET) + backend_modify (EV_A_ fd, o_events, events); + } } fdchangecnt = 0; } -static void -fd_change (EV_P_ int fd) +void inline_size +fd_change (EV_P_ int fd, int flags) { - if (anfds [fd].reify) - return; - - anfds [fd].reify = 1; + unsigned char reify = anfds [fd].reify; + anfds [fd].reify |= flags; - ++fdchangecnt; - array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); - fdchanges [fdchangecnt - 1] = fd; + if (expect_true (!reify)) + { + ++fdchangecnt; + array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); + fdchanges [fdchangecnt - 1] = fd; + } } -static void +void inline_speed fd_kill (EV_P_ int fd) { - struct ev_io *w; + ev_io *w; - while ((w = (struct ev_io *)anfds [fd].head)) + while ((w = (ev_io *)anfds [fd].head)) { ev_io_stop (EV_A_ w); ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); } } -static int +int inline_size fd_valid (int fd) { #ifdef _WIN32 @@ -474,7 +720,7 @@ } /* called on EBADF to verify fds */ -static void +static void noinline fd_ebadf (EV_P) { int fd; @@ -486,7 +732,7 @@ } /* called on ENOMEM in select/poll to kill some fds and retry */ -static void +static void noinline fd_enomem (EV_P) { int fd; @@ -499,65 +745,75 @@ } } -/* usually called after fork if method needs to re-arm all fds from scratch */ -static void +/* usually called after fork if backend needs to re-arm all fds from scratch */ +static void noinline fd_rearm_all (EV_P) { int fd; - /* 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); + fd_change (EV_A_ fd, EV_IOFDSET | 1); } } /*****************************************************************************/ -static void +/* towards the root */ +void inline_speed upheap (WT *heap, int k) { WT w = heap [k]; - while (k && heap [k >> 1]->at > w->at) + for (;;) { - heap [k] = heap [k >> 1]; - ((W)heap [k])->active = k + 1; - k >>= 1; + int p = k >> 1; + + /* maybe we could use a dummy element at heap [0]? */ + if (!p || heap [p]->at <= w->at) + break; + + heap [k] = heap [p]; + ev_active (heap [k]) = k; + k = p; } heap [k] = w; - ((W)heap [k])->active = k + 1; - + ev_active (heap [k]) = k; } -static void +/* away from the root */ +void inline_speed downheap (WT *heap, int N, int k) { WT w = heap [k]; - while (k < (N >> 1)) + for (;;) { - int j = k << 1; + int c = k << 1; - if (j + 1 < N && heap [j]->at > heap [j + 1]->at) - ++j; + if (c > N) + break; - if (w->at <= heap [j]->at) + c += c < N && heap [c]->at > heap [c + 1]->at + ? 1 : 0; + + if (w->at <= heap [c]->at) break; - heap [k] = heap [j]; - ((W)heap [k])->active = k + 1; - k = j; + heap [k] = heap [c]; + ev_active (heap [k]) = k; + + k = c; } heap [k] = w; - ((W)heap [k])->active = k + 1; + ev_active (heap [k]) = k; } -inline void +void inline_size adjustheap (WT *heap, int N, int k) { upheap (heap, k); @@ -569,17 +825,15 @@ typedef struct { WL head; - sig_atomic_t volatile gotsig; + EV_ATOMIC_T gotsig; } ANSIG; static ANSIG *signals; static int signalmax; -static int sigpipe [2]; -static sig_atomic_t volatile gotsig; -static struct ev_io sigev; +static EV_ATOMIC_T gotsig; -static void +void inline_size signals_init (ANSIG *base, int count) { while (count--) @@ -591,126 +845,213 @@ } } -static void -sighandler (int signum) +/*****************************************************************************/ + +void inline_speed +fd_intern (int fd) { -#if _WIN32 - signal (signum, sighandler); +#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 +} - signals [signum - 1].gotsig = 1; +static void noinline +evpipe_init (EV_P) +{ + if (!ev_is_active (&pipeev)) + { +#if EV_USE_EVENTFD + if ((evfd = eventfd (0, 0)) >= 0) + { + evpipe [0] = -1; + fd_intern (evfd); + ev_io_set (&pipeev, evfd, EV_READ); + } + else +#endif + { + while (pipe (evpipe)) + syserr ("(libev) error creating signal/async pipe"); - if (!gotsig) + fd_intern (evpipe [0]); + fd_intern (evpipe [1]); + ev_io_set (&pipeev, evpipe [0], EV_READ); + } + + ev_io_start (EV_A_ &pipeev); + ev_unref (EV_A); /* watcher should not keep loop alive */ + } +} + +void inline_size +evpipe_write (EV_P_ EV_ATOMIC_T *flag) +{ + if (!*flag) { - int old_errno = errno; - gotsig = 1; - write (sigpipe [1], &signum, 1); + int old_errno = errno; /* save errno because write might clobber it */ + + *flag = 1; + +#if EV_USE_EVENTFD + if (evfd >= 0) + { + uint64_t counter = 1; + write (evfd, &counter, sizeof (uint64_t)); + } + else +#endif + write (evpipe [1], &old_errno, 1); + errno = old_errno; } } -void -ev_feed_signal_event (EV_P_ int signum) +static void +pipecb (EV_P_ ev_io *iow, int revents) { - WL w; - -#if EV_MULTIPLICITY - assert (("feeding signal events is only supported in the default loop", loop == default_loop)); +#if EV_USE_EVENTFD + if (evfd >= 0) + { + uint64_t counter; + read (evfd, &counter, sizeof (uint64_t)); + } + else #endif + { + char dummy; + read (evpipe [0], &dummy, 1); + } - --signum; + if (gotsig && ev_is_default_loop (EV_A)) + { + int signum; + gotsig = 0; - if (signum < 0 || signum >= signalmax) - return; + for (signum = signalmax; signum--; ) + if (signals [signum].gotsig) + ev_feed_signal_event (EV_A_ signum + 1); + } - signals [signum].gotsig = 0; +#if EV_ASYNC_ENABLE + if (gotasync) + { + int i; + gotasync = 0; - for (w = signals [signum].head; w; w = w->next) - ev_feed_event (EV_A_ (W)w, EV_SIGNAL); + for (i = asynccnt; i--; ) + if (asyncs [i]->sent) + { + asyncs [i]->sent = 0; + ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); + } + } +#endif } +/*****************************************************************************/ + static void -sigcb (EV_P_ struct ev_io *iow, int revents) +ev_sighandler (int signum) { - int signum; +#if EV_MULTIPLICITY + struct ev_loop *loop = &default_loop_struct; +#endif - read (sigpipe [0], &revents, 1); - gotsig = 0; +#if _WIN32 + signal (signum, ev_sighandler); +#endif - for (signum = signalmax; signum--; ) - if (signals [signum].gotsig) - ev_feed_signal_event (EV_A_ signum + 1); + signals [signum - 1].gotsig = 1; + evpipe_write (EV_A_ &gotsig); } -inline void -fd_intern (int fd) +void noinline +ev_feed_signal_event (EV_P_ int signum) { -#ifdef _WIN32 - int arg = 1; - ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); -#else - fcntl (fd, F_SETFD, FD_CLOEXEC); - fcntl (fd, F_SETFL, O_NONBLOCK); + WL w; + +#if EV_MULTIPLICITY + assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); #endif -} -static void -siginit (EV_P) -{ - fd_intern (sigpipe [0]); - fd_intern (sigpipe [1]); + --signum; + + if (signum < 0 || signum >= signalmax) + return; - ev_io_set (&sigev, sigpipe [0], EV_READ); - ev_io_start (EV_A_ &sigev); - ev_unref (EV_A); /* child watcher should not keep loop alive */ + signals [signum].gotsig = 0; + + for (w = signals [signum].head; w; w = w->next) + ev_feed_event (EV_A_ (W)w, EV_SIGNAL); } /*****************************************************************************/ -static struct ev_child *childs [PID_HASHSIZE]; +static WL childs [EV_PID_HASHSIZE]; #ifndef _WIN32 -static struct ev_signal childev; +static ev_signal childev; -#ifndef WCONTINUED -# define WCONTINUED 0 +#ifndef WIFCONTINUED +# define WIFCONTINUED(status) 0 #endif -static void -child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) +void inline_speed +child_reap (EV_P_ int chain, int pid, int status) { - struct ev_child *w; + ev_child *w; + int traced = WIFSTOPPED (status) || WIFCONTINUED (status); - for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) - if (w->pid == pid || !w->pid) - { - 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); - } + for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) + { + if ((w->pid == pid || !w->pid) + && (!traced || (w->flags & 1))) + { + ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ + w->rpid = pid; + w->rstatus = status; + ev_feed_event (EV_A_ (W)w, EV_CHILD); + } + } } +#ifndef WCONTINUED +# define WCONTINUED 0 +#endif + static void -childcb (EV_P_ struct ev_signal *sw, int revents) +childcb (EV_P_ ev_signal *sw, int revents) { int pid, status; - if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) - { - /* make sure we are called again until all childs have been reaped */ - ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); + /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ + if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) + if (!WCONTINUED + || errno != EINVAL + || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) + return; - 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 */ - } + /* make sure we are called again until all children have been reaped */ + /* we need to do it this way so that the callback gets called before we continue */ + ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); + + child_reap (EV_A_ pid, pid, status); + if (EV_PID_HASHSIZE > 1) + child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ } #endif /*****************************************************************************/ +#if EV_USE_PORT +# include "ev_port.c" +#endif #if EV_USE_KQUEUE # include "ev_kqueue.c" #endif @@ -737,7 +1078,7 @@ } /* return true if we are running with elevated privileges and should ignore env variables */ -static int +int inline_size enable_secure (void) { #ifdef _WIN32 @@ -748,16 +1089,78 @@ #endif } -int -ev_method (EV_P) +unsigned int +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) { - return method; + unsigned int flags = ev_supported_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; } -static void +unsigned int +ev_embeddable_backends (void) +{ + int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; + + /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ + /* please fix it and tell me how to detect the fix */ + flags &= ~EVBACKEND_EPOLL; + + return flags; +} + +unsigned int +ev_backend (EV_P) +{ + return backend; +} + +unsigned int +ev_loop_count (EV_P) +{ + return loop_count; +} + +void +ev_set_io_collect_interval (EV_P_ ev_tstamp interval) +{ + io_blocktime = interval; +} + +void +ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) +{ + timeout_blocktime = interval; +} + +static void noinline loop_init (EV_P_ unsigned int flags) { - if (!method) + if (!backend) { #if EV_USE_MONOTONIC { @@ -767,93 +1170,175 @@ } #endif - ev_rt_now = ev_time (); - mn_now = get_clock (); - now_floor = mn_now; - rtmn_diff = ev_rt_now - mn_now; + ev_rt_now = ev_time (); + mn_now = get_clock (); + now_floor = mn_now; + rtmn_diff = ev_rt_now - mn_now; + + io_blocktime = 0.; + timeout_blocktime = 0.; + backend = 0; + backend_fd = -1; + gotasync = 0; +#if EV_USE_INOTIFY + fs_fd = -2; +#endif - if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) + /* pid check not overridable via env */ +#ifndef _WIN32 + if (flags & EVFLAG_FORKCHECK) + curpid = getpid (); +#endif + + if (!(flags & EVFLAG_NOENV) + && !enable_secure () + && getenv ("LIBEV_FLAGS")) flags = atoi (getenv ("LIBEV_FLAGS")); - if (!(flags & 0x0000ffff)) - flags |= 0x0000ffff; + if (!(flags & 0x0000ffffU)) + flags |= ev_recommended_backends (); - method = 0; +#if EV_USE_PORT + 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); - ev_set_priority (&sigev, EV_MAXPRI); + ev_init (&pipeev, pipecb); + ev_set_priority (&pipeev, EV_MAXPRI); } } -void +static void noinline loop_destroy (EV_P) { int i; + if (ev_is_active (&pipeev)) + { + ev_ref (EV_A); /* signal watcher */ + ev_io_stop (EV_A_ &pipeev); + +#if EV_USE_EVENTFD + if (evfd >= 0) + close (evfd); +#endif + + if (evpipe [0] >= 0) + { + close (evpipe [0]); + close (evpipe [1]); + } + } + +#if EV_USE_INOTIFY + if (fs_fd >= 0) + close (fs_fd); +#endif + + if (backend_fd >= 0) + close (backend_fd); + +#if EV_USE_PORT + 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--; ) - array_free (pending, [i]); + { + array_free (pending, [i]); +#if EV_IDLE_ENABLE + array_free (idle, [i]); +#endif + } + + ev_free (anfds); anfdmax = 0; /* have to use the microsoft-never-gets-it-right macro */ array_free (fdchange, EMPTY); array_free (timer, EMPTY); -#if EV_PERIODICS +#if EV_PERIODIC_ENABLE array_free (periodic, EMPTY); #endif - array_free (idle, EMPTY); +#if EV_FORK_ENABLE + array_free (fork, EMPTY); +#endif array_free (prepare, EMPTY); array_free (check, EMPTY); +#if EV_ASYNC_ENABLE + array_free (async, EMPTY); +#endif - method = 0; + backend = 0; } -static void +#if EV_USE_INOTIFY +void inline_size infy_fork (EV_P); +#endif + +void inline_size loop_fork (EV_P) { -#if EV_USE_EPOLL - if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); +#if EV_USE_PORT + 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 (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); +#endif +#if EV_USE_INOTIFY + infy_fork (EV_A); #endif - if (ev_is_active (&sigev)) + if (ev_is_active (&pipeev)) { - /* default loop */ + /* this "locks" the handlers against writing to the pipe */ + /* while we modify the fd vars */ + gotsig = 1; +#if EV_ASYNC_ENABLE + gotasync = 1; +#endif ev_ref (EV_A); - ev_io_stop (EV_A_ &sigev); - close (sigpipe [0]); - close (sigpipe [1]); + ev_io_stop (EV_A_ &pipeev); + +#if EV_USE_EVENTFD + if (evfd >= 0) + close (evfd); +#endif - while (pipe (sigpipe)) - syserr ("(libev) error creating pipe"); + if (evpipe [0] >= 0) + { + close (evpipe [0]); + close (evpipe [1]); + } - siginit (EV_A); + evpipe_init (EV_A); + /* now iterate over everything, in case we missed something */ + pipecb (EV_A_ &pipeev, EV_READ); } postfork = 0; @@ -869,7 +1354,7 @@ loop_init (EV_A_ flags); - if (ev_method (EV_A)) + if (ev_backend (EV_A)) return loop; return 0; @@ -885,36 +1370,31 @@ void ev_loop_fork (EV_P) { - postfork = 1; + postfork = 1; /* must be in line with ev_default_fork */ } #endif #if EV_MULTIPLICITY struct ev_loop * +ev_default_loop_init (unsigned int flags) #else int +ev_default_loop (unsigned int flags) #endif -ev_default_loop (unsigned int methods) { - if (sigpipe [0] == sigpipe [1]) - if (pipe (sigpipe)) - return 0; - - if (!default_loop) + if (!ev_default_loop_ptr) { #if EV_MULTIPLICITY - struct ev_loop *loop = default_loop = &default_loop_struct; + struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; #else - default_loop = 1; + ev_default_loop_ptr = 1; #endif - loop_init (EV_A_ methods); + loop_init (EV_A_ flags); - if (ev_method (EV_A)) + if (ev_backend (EV_A)) { - siginit (EV_A); - #ifndef _WIN32 ev_signal_init (&childev, childcb, SIGCHLD); ev_set_priority (&childev, EV_MAXPRI); @@ -923,17 +1403,17 @@ #endif } else - default_loop = 0; + ev_default_loop_ptr = 0; } - return default_loop; + return ev_default_loop_ptr; } void ev_default_destroy (void) { #if EV_MULTIPLICITY - struct ev_loop *loop = default_loop; + struct ev_loop *loop = ev_default_loop_ptr; #endif #ifndef _WIN32 @@ -941,12 +1421,6 @@ 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); } @@ -954,28 +1428,22 @@ ev_default_fork (void) { #if EV_MULTIPLICITY - struct ev_loop *loop = default_loop; + struct ev_loop *loop = ev_default_loop_ptr; #endif - if (method) - postfork = 1; + if (backend) + postfork = 1; /* must be in line with ev_loop_fork */ } /*****************************************************************************/ -static int -any_pending (EV_P) +void +ev_invoke (EV_P_ void *w, int revents) { - int pri; - - for (pri = NUMPRI; pri--; ) - if (pendingcnt [pri]) - return 1; - - return 0; + EV_CB_INVOKE ((W)w, revents); } -static void +void inline_speed call_pending (EV_P) { int pri; @@ -985,33 +1453,35 @@ { ANPENDING *p = pendings [pri] + --pendingcnt [pri]; - if (p->w) + if (expect_true (p->w)) { + /*assert (("non-pending watcher on pending list", p->w->pending));*/ + p->w->pending = 0; EV_CB_INVOKE (p->w, p->events); } } } -static void +void inline_size timers_reify (EV_P) { - while (timercnt && ((WT)timers [0])->at <= mn_now) + while (timercnt && ev_at (timers [1]) <= mn_now) { - struct ev_timer *w = timers [0]; + ev_timer *w = (ev_timer *)timers [1]; - assert (("inactive timer on timer heap detected", ev_is_active (w))); + /*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.)); - ((WT)w)->at += w->repeat; - if (((WT)w)->at < mn_now) - ((WT)w)->at = mn_now; + ev_at (w) += w->repeat; + if (ev_at (w) < mn_now) + ev_at (w) = mn_now; - downheap ((WT *)timers, timercnt, 0); + downheap (timers, timercnt, 1); } else ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ @@ -1020,28 +1490,29 @@ } } -#if EV_PERIODICS -static void +#if EV_PERIODIC_ENABLE +void inline_size periodics_reify (EV_P) { - while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) + while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now) { - struct ev_periodic *w = periodics [0]; + ev_periodic *w = (ev_periodic *)periodics [1]; - assert (("inactive timer on periodic heap detected", ev_is_active (w))); + /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ /* first reschedule or stop timer */ if (w->reschedule_cb) { - ((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); + ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); + assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); + downheap (periodics, periodiccnt, 1); } 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); + ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; + if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval; + assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now)); + downheap (periodics, periodiccnt, 1); } else ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ @@ -1050,91 +1521,113 @@ } } -static void +static void noinline periodics_reschedule (EV_P) { int i; /* adjust periodics after time jump */ - for (i = 0; i < periodiccnt; ++i) + for (i = 1; i <= periodiccnt; ++i) { - struct ev_periodic *w = periodics [i]; + ev_periodic *w = (ev_periodic *)periodics [i]; if (w->reschedule_cb) - ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); + ev_at (w) = 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; + ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; } /* now rebuild the heap */ for (i = periodiccnt >> 1; i--; ) - downheap ((WT *)periodics, periodiccnt, i); + downheap (periodics, periodiccnt, i); } #endif -inline int -time_update_monotonic (EV_P) +#if EV_IDLE_ENABLE +void inline_size +idle_reify (EV_P) { - mn_now = get_clock (); - - if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) - { - ev_rt_now = rtmn_diff + mn_now; - return 0; - } - else + if (expect_false (idleall)) { - now_floor = mn_now; - ev_rt_now = ev_time (); - return 1; + int pri; + + for (pri = NUMPRI; pri--; ) + { + if (pendingcnt [pri]) + break; + + if (idlecnt [pri]) + { + queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); + break; + } + } } } +#endif -static void -time_update (EV_P) +void inline_speed +time_update (EV_P_ ev_tstamp max_block) { int i; #if EV_USE_MONOTONIC if (expect_true (have_monotonic)) { - if (time_update_monotonic (EV_A)) + ev_tstamp odiff = rtmn_diff; + + mn_now = get_clock (); + + /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ + /* interpolate in the meantime */ + if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) { - ev_tstamp odiff = rtmn_diff; + ev_rt_now = rtmn_diff + mn_now; + return; + } - for (i = 4; --i; ) /* loop a few times, before making important decisions */ - { - rtmn_diff = ev_rt_now - mn_now; + now_floor = mn_now; + ev_rt_now = ev_time (); - if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) - return; /* all is well */ + /* loop a few times, before making important decisions. + * on the choice of "4": one iteration isn't enough, + * in case we get preempted during the calls to + * ev_time and get_clock. a second call is almost guaranteed + * to succeed in that case, though. and looping a few more times + * doesn't hurt either as we only do this on time-jumps or + * in the unlikely event of having been preempted here. + */ + for (i = 4; --i; ) + { + rtmn_diff = ev_rt_now - mn_now; - ev_rt_now = ev_time (); - mn_now = get_clock (); - now_floor = mn_now; - } + if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) + return; /* all is well */ -# 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) */ + ev_rt_now = ev_time (); + mn_now = get_clock (); + now_floor = mn_now; } + +# if EV_PERIODIC_ENABLE + periodics_reschedule (EV_A); +# endif + /* no timer adjustment, as the monotonic clock doesn't jump */ + /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ } else #endif { ev_rt_now = ev_time (); - if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) + if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) { -#if EV_PERIODICS +#if EV_PERIODIC_ENABLE 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 += ev_rt_now - mn_now; + /* adjust timers. this is easy, as the offset is the same for all of them */ + for (i = 1; i <= timercnt; ++i) + ev_at (timers [i]) += ev_rt_now - mn_now; } mn_now = ev_rt_now; @@ -1158,18 +1651,41 @@ void ev_loop (EV_P_ int flags) { - double block; - loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; + loop_done = EVUNLOOP_CANCEL; + + call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ do { - /* queue check watchers (and execute them) */ +#ifndef _WIN32 + if (expect_false (curpid)) /* penalise the forking check even more */ + if (expect_false (getpid () != curpid)) + { + curpid = getpid (); + postfork = 1; + } +#endif + +#if EV_FORK_ENABLE + /* we might have forked, so queue fork handlers */ + if (expect_false (postfork)) + if (forkcnt) + { + queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); + call_pending (EV_A); + } +#endif + + /* queue prepare watchers (and execute them) */ if (expect_false (preparecnt)) { queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); call_pending (EV_A); } + if (expect_false (!activecnt)) + break; + /* we might have forked, so reify kernel state if necessary */ if (expect_false (postfork)) loop_fork (EV_A); @@ -1178,67 +1694,78 @@ fd_reify (EV_A); /* calculate blocking time */ + { + ev_tstamp waittime = 0.; + ev_tstamp sleeptime = 0.; - /* 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)) - time_update_monotonic (EV_A); - else -#endif - { - ev_rt_now = ev_time (); - mn_now = ev_rt_now; - } - - if (flags & EVLOOP_NONBLOCK || idlecnt) - block = 0.; - else - { - block = MAX_BLOCKTIME; - - if (timercnt) - { - ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; - if (block > to) block = to; - } + if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) + { + /* update time to cancel out callback processing overhead */ + time_update (EV_A_ 1e100); -#if EV_PERIODICS - if (periodiccnt) - { - ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; - if (block > to) block = to; - } -#endif + waittime = MAX_BLOCKTIME; - if (block < 0.) block = 0.; - } + if (timercnt) + { + ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge; + if (waittime > to) waittime = to; + } + +#if EV_PERIODIC_ENABLE + if (periodiccnt) + { + ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge; + if (waittime > to) waittime = to; + } +#endif + + if (expect_false (waittime < timeout_blocktime)) + waittime = timeout_blocktime; + + sleeptime = waittime - backend_fudge; + + if (expect_true (sleeptime > io_blocktime)) + sleeptime = io_blocktime; + + if (sleeptime) + { + ev_sleep (sleeptime); + waittime -= sleeptime; + } + } - method_poll (EV_A_ block); + ++loop_count; + backend_poll (EV_A_ waittime); - /* update ev_rt_now, do magic */ - time_update (EV_A); + /* update ev_rt_now, do magic */ + time_update (EV_A_ waittime + sleeptime); + } /* queue pending timers and reschedule them */ timers_reify (EV_A); /* relative timers called last */ -#if EV_PERIODICS +#if EV_PERIODIC_ENABLE periodics_reify (EV_A); /* absolute timers called first */ #endif - /* queue idle watchers unless io or timers are pending */ - if (idlecnt && !any_pending (EV_A)) - queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); +#if EV_IDLE_ENABLE + /* queue idle watchers unless other events are pending */ + idle_reify (EV_A); +#endif /* queue check watchers, to be executed first */ - if (checkcnt) + if (expect_false (checkcnt)) queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); call_pending (EV_A); } - while (activecnt && !loop_done); + while (expect_true ( + activecnt + && !loop_done + && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) + )); - if (loop_done != 2) - loop_done = 0; + if (loop_done == EVUNLOOP_ONE) + loop_done = EVUNLOOP_CANCEL; } void @@ -1249,14 +1776,14 @@ /*****************************************************************************/ -inline void +void inline_size wlist_add (WL *head, WL elem) { elem->next = *head; *head = elem; } -inline void +void inline_size wlist_del (WL *head, WL elem) { while (*head) @@ -1271,8 +1798,8 @@ } } -inline void -ev_clear_pending (EV_P_ W w) +void inline_speed +clear_pending (EV_P_ W w) { if (w->pending) { @@ -1281,17 +1808,41 @@ } } -inline void -ev_start (EV_P_ W w, int active) +int +ev_clear_pending (EV_P_ void *w) { - if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; - if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; + W w_ = (W)w; + int pending = w_->pending; + if (expect_true (pending)) + { + ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; + w_->pending = 0; + p->w = 0; + return p->events; + } + else + return 0; +} + +void inline_size +pri_adjust (EV_P_ W w) +{ + int pri = w->priority; + pri = pri < EV_MINPRI ? EV_MINPRI : pri; + pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; + w->priority = pri; +} + +void inline_speed +ev_start (EV_P_ W w, int active) +{ + pri_adjust (EV_A_ w); w->active = active; ev_ref (EV_A); } -inline void +void inline_size ev_stop (EV_P_ W w) { ev_unref (EV_A); @@ -1300,137 +1851,155 @@ /*****************************************************************************/ -void -ev_io_start (EV_P_ struct ev_io *w) +void noinline +ev_io_start (EV_P_ ev_io *w) { int fd = w->fd; - if (ev_is_active (w)) + if (expect_false (ev_is_active (w))) return; assert (("ev_io_start called with negative fd", fd >= 0)); ev_start (EV_A_ (W)w, 1); array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); - wlist_add ((WL *)&anfds[fd].head, (WL)w); + wlist_add (&anfds[fd].head, (WL)w); - fd_change (EV_A_ fd); + fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); + w->events &= ~EV_IOFDSET; } -void -ev_io_stop (EV_P_ struct ev_io *w) +void noinline +ev_io_stop (EV_P_ ev_io *w) { - ev_clear_pending (EV_A_ (W)w); - if (!ev_is_active (w)) + clear_pending (EV_A_ (W)w); + if (expect_false (!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); + wlist_del (&anfds[w->fd].head, (WL)w); ev_stop (EV_A_ (W)w); - fd_change (EV_A_ w->fd); + fd_change (EV_A_ w->fd, 1); } -void -ev_timer_start (EV_P_ struct ev_timer *w) +void noinline +ev_timer_start (EV_P_ ev_timer *w) { - if (ev_is_active (w)) + if (expect_false (ev_is_active (w))) return; - ((WT)w)->at += mn_now; + ev_at (w) += mn_now; assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); ev_start (EV_A_ (W)w, ++timercnt); - array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); - timers [timercnt - 1] = w; - upheap ((WT *)timers, timercnt - 1); + array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2); + timers [timercnt] = (WT)w; + upheap (timers, timercnt); - assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); + /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ } -void -ev_timer_stop (EV_P_ struct ev_timer *w) +void noinline +ev_timer_stop (EV_P_ ev_timer *w) { - ev_clear_pending (EV_A_ (W)w); - if (!ev_is_active (w)) + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) return; - assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); + { + int active = ev_active (w); - if (((W)w)->active < timercnt--) - { - timers [((W)w)->active - 1] = timers [timercnt]; - adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); - } + assert (("internal timer heap corruption", timers [active] == (WT)w)); + + if (expect_true (active < timercnt)) + { + timers [active] = timers [timercnt]; + adjustheap (timers, timercnt, active); + } - ((WT)w)->at -= mn_now; + --timercnt; + } + + ev_at (w) -= mn_now; ev_stop (EV_A_ (W)w); } -void -ev_timer_again (EV_P_ struct ev_timer *w) +void noinline +ev_timer_again (EV_P_ ev_timer *w) { if (ev_is_active (w)) { if (w->repeat) { - ((WT)w)->at = mn_now + w->repeat; - adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); + ev_at (w) = mn_now + w->repeat; + adjustheap (timers, timercnt, ev_active (w)); } else ev_timer_stop (EV_A_ w); } else if (w->repeat) - ev_timer_start (EV_A_ w); + { + ev_at (w) = w->repeat; + ev_timer_start (EV_A_ w); + } } -#if EV_PERIODICS -void -ev_periodic_start (EV_P_ struct ev_periodic *w) +#if EV_PERIODIC_ENABLE +void noinline +ev_periodic_start (EV_P_ ev_periodic *w) { - if (ev_is_active (w)) + if (expect_false (ev_is_active (w))) return; if (w->reschedule_cb) - ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); + ev_at (w) = 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_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; } + else + ev_at (w) = w->offset; ev_start (EV_A_ (W)w, ++periodiccnt); - array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); - periodics [periodiccnt - 1] = w; - upheap ((WT *)periodics, periodiccnt - 1); + array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2); + periodics [periodiccnt] = (WT)w; + upheap (periodics, periodiccnt); - assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); + /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ } -void -ev_periodic_stop (EV_P_ struct ev_periodic *w) +void noinline +ev_periodic_stop (EV_P_ ev_periodic *w) { - ev_clear_pending (EV_A_ (W)w); - if (!ev_is_active (w)) + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) return; - assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); + { + int active = ev_active (w); - if (((W)w)->active < periodiccnt--) - { - periodics [((W)w)->active - 1] = periodics [periodiccnt]; - adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); - } + assert (("internal periodic heap corruption", periodics [active] == (WT)w)); + + if (expect_true (active < periodiccnt)) + { + periodics [active] = periodics [periodiccnt]; + adjustheap (periodics, periodiccnt, active); + } + + --periodiccnt; + } ev_stop (EV_A_ (W)w); } -void -ev_periodic_again (EV_P_ struct ev_periodic *w) +void noinline +ev_periodic_again (EV_P_ ev_periodic *w) { /* TODO: use adjustheap and recalculation */ ev_periodic_stop (EV_A_ w); @@ -1438,149 +2007,593 @@ } #endif +#ifndef SA_RESTART +# define SA_RESTART 0 +#endif + +void noinline +ev_signal_start (EV_P_ ev_signal *w) +{ +#if EV_MULTIPLICITY + assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); +#endif + if (expect_false (ev_is_active (w))) + return; + + assert (("ev_signal_start called with illegal signal number", w->signum > 0)); + + evpipe_init (EV_A); + + { +#ifndef _WIN32 + sigset_t full, prev; + sigfillset (&full); + sigprocmask (SIG_SETMASK, &full, &prev); +#endif + + array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); + +#ifndef _WIN32 + sigprocmask (SIG_SETMASK, &prev, 0); +#endif + } + + ev_start (EV_A_ (W)w, 1); + wlist_add (&signals [w->signum - 1].head, (WL)w); + + if (!((WL)w)->next) + { +#if _WIN32 + signal (w->signum, ev_sighandler); +#else + struct sigaction sa; + sa.sa_handler = ev_sighandler; + sigfillset (&sa.sa_mask); + sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ + sigaction (w->signum, &sa, 0); +#endif + } +} + +void noinline +ev_signal_stop (EV_P_ ev_signal *w) +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + wlist_del (&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_idle_start (EV_P_ struct ev_idle *w) +ev_child_start (EV_P_ ev_child *w) { - if (ev_is_active (w)) +#if EV_MULTIPLICITY + assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); +#endif + if (expect_false (ev_is_active (w))) return; - ev_start (EV_A_ (W)w, ++idlecnt); - array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); - idles [idlecnt - 1] = w; + ev_start (EV_A_ (W)w, 1); + wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); } void -ev_idle_stop (EV_P_ struct ev_idle *w) +ev_child_stop (EV_P_ ev_child *w) { - ev_clear_pending (EV_A_ (W)w); - if (!ev_is_active (w)) + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) return; - idles [((W)w)->active - 1] = idles [--idlecnt]; + wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); ev_stop (EV_A_ (W)w); } +#if EV_STAT_ENABLE + +# ifdef _WIN32 +# undef lstat +# define lstat(a,b) _stati64 (a,b) +# endif + +#define DEF_STAT_INTERVAL 5.0074891 +#define MIN_STAT_INTERVAL 0.1074891 + +static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); + +#if EV_USE_INOTIFY +# define EV_INOTIFY_BUFSIZE 8192 + +static void noinline +infy_add (EV_P_ ev_stat *w) +{ + w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); + + if (w->wd < 0) + { + ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ + + /* monitor some parent directory for speedup hints */ + if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) + { + char path [4096]; + strcpy (path, w->path); + + do + { + int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF + | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); + + char *pend = strrchr (path, '/'); + + if (!pend) + break; /* whoops, no '/', complain to your admin */ + + *pend = 0; + w->wd = inotify_add_watch (fs_fd, path, mask); + } + while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); + } + } + else + ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ + + if (w->wd >= 0) + wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); +} + +static void noinline +infy_del (EV_P_ ev_stat *w) +{ + int slot; + int wd = w->wd; + + if (wd < 0) + return; + + w->wd = -2; + slot = wd & (EV_INOTIFY_HASHSIZE - 1); + wlist_del (&fs_hash [slot].head, (WL)w); + + /* remove this watcher, if others are watching it, they will rearm */ + inotify_rm_watch (fs_fd, wd); +} + +static void noinline +infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) +{ + if (slot < 0) + /* overflow, need to check for all hahs slots */ + for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) + infy_wd (EV_A_ slot, wd, ev); + else + { + WL w_; + + for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) + { + ev_stat *w = (ev_stat *)w_; + w_ = w_->next; /* lets us remove this watcher and all before it */ + + if (w->wd == wd || wd == -1) + { + if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) + { + w->wd = -1; + infy_add (EV_A_ w); /* re-add, no matter what */ + } + + stat_timer_cb (EV_A_ &w->timer, 0); + } + } + } +} + +static void +infy_cb (EV_P_ ev_io *w, int revents) +{ + char buf [EV_INOTIFY_BUFSIZE]; + struct inotify_event *ev = (struct inotify_event *)buf; + int ofs; + int len = read (fs_fd, buf, sizeof (buf)); + + for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) + infy_wd (EV_A_ ev->wd, ev->wd, ev); +} + +void inline_size +infy_init (EV_P) +{ + if (fs_fd != -2) + return; + + fs_fd = inotify_init (); + + if (fs_fd >= 0) + { + ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); + ev_set_priority (&fs_w, EV_MAXPRI); + ev_io_start (EV_A_ &fs_w); + } +} + +void inline_size +infy_fork (EV_P) +{ + int slot; + + if (fs_fd < 0) + return; + + close (fs_fd); + fs_fd = inotify_init (); + + for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) + { + WL w_ = fs_hash [slot].head; + fs_hash [slot].head = 0; + + while (w_) + { + ev_stat *w = (ev_stat *)w_; + w_ = w_->next; /* lets us add this watcher */ + + w->wd = -1; + + if (fs_fd >= 0) + infy_add (EV_A_ w); /* re-add, no matter what */ + else + ev_timer_start (EV_A_ &w->timer); + } + + } +} + +#endif + void -ev_prepare_start (EV_P_ struct ev_prepare *w) +ev_stat_stat (EV_P_ ev_stat *w) { - if (ev_is_active (w)) + if (lstat (w->path, &w->attr) < 0) + w->attr.st_nlink = 0; + else if (!w->attr.st_nlink) + w->attr.st_nlink = 1; +} + +static void noinline +stat_timer_cb (EV_P_ ev_timer *w_, int revents) +{ + ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); + + /* we copy this here each the time so that */ + /* prev has the old value when the callback gets invoked */ + w->prev = w->attr; + ev_stat_stat (EV_A_ w); + + /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ + if ( + w->prev.st_dev != w->attr.st_dev + || w->prev.st_ino != w->attr.st_ino + || w->prev.st_mode != w->attr.st_mode + || w->prev.st_nlink != w->attr.st_nlink + || w->prev.st_uid != w->attr.st_uid + || w->prev.st_gid != w->attr.st_gid + || w->prev.st_rdev != w->attr.st_rdev + || w->prev.st_size != w->attr.st_size + || w->prev.st_atime != w->attr.st_atime + || w->prev.st_mtime != w->attr.st_mtime + || w->prev.st_ctime != w->attr.st_ctime + ) { + #if EV_USE_INOTIFY + infy_del (EV_A_ w); + infy_add (EV_A_ w); + ev_stat_stat (EV_A_ w); /* avoid race... */ + #endif + + ev_feed_event (EV_A_ w, EV_STAT); + } +} + +void +ev_stat_start (EV_P_ ev_stat *w) +{ + if (expect_false (ev_is_active (w))) + return; + + /* since we use memcmp, we need to clear any padding data etc. */ + memset (&w->prev, 0, sizeof (ev_statdata)); + memset (&w->attr, 0, sizeof (ev_statdata)); + + ev_stat_stat (EV_A_ w); + + if (w->interval < MIN_STAT_INTERVAL) + w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; + + ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); + ev_set_priority (&w->timer, ev_priority (w)); + +#if EV_USE_INOTIFY + infy_init (EV_A); + + if (fs_fd >= 0) + infy_add (EV_A_ w); + else +#endif + ev_timer_start (EV_A_ &w->timer); + + ev_start (EV_A_ (W)w, 1); +} + +void +ev_stat_stop (EV_P_ ev_stat *w) +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + +#if EV_USE_INOTIFY + infy_del (EV_A_ w); +#endif + ev_timer_stop (EV_A_ &w->timer); + + ev_stop (EV_A_ (W)w); +} +#endif + +#if EV_IDLE_ENABLE +void +ev_idle_start (EV_P_ ev_idle *w) +{ + if (expect_false (ev_is_active (w))) + return; + + pri_adjust (EV_A_ (W)w); + + { + int active = ++idlecnt [ABSPRI (w)]; + + ++idleall; + ev_start (EV_A_ (W)w, active); + + array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); + idles [ABSPRI (w)][active - 1] = w; + } +} + +void +ev_idle_stop (EV_P_ ev_idle *w) +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + { + int active = ev_active (w); + + idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; + ev_active (idles [ABSPRI (w)][active - 1]) = active; + + ev_stop (EV_A_ (W)w); + --idleall; + } +} +#endif + +void +ev_prepare_start (EV_P_ ev_prepare *w) +{ + if (expect_false (ev_is_active (w))) return; ev_start (EV_A_ (W)w, ++preparecnt); - array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); + array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); prepares [preparecnt - 1] = w; } void -ev_prepare_stop (EV_P_ struct ev_prepare *w) +ev_prepare_stop (EV_P_ ev_prepare *w) { - ev_clear_pending (EV_A_ (W)w); - if (!ev_is_active (w)) + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) return; - prepares [((W)w)->active - 1] = prepares [--preparecnt]; + { + int active = ev_active (w); + + prepares [active - 1] = prepares [--preparecnt]; + ev_active (prepares [active - 1]) = active; + } + ev_stop (EV_A_ (W)w); } void -ev_check_start (EV_P_ struct ev_check *w) +ev_check_start (EV_P_ ev_check *w) { - if (ev_is_active (w)) + if (expect_false (ev_is_active (w))) return; ev_start (EV_A_ (W)w, ++checkcnt); - array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); + array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); checks [checkcnt - 1] = w; } void -ev_check_stop (EV_P_ struct ev_check *w) +ev_check_stop (EV_P_ ev_check *w) { - ev_clear_pending (EV_A_ (W)w); - if (!ev_is_active (w)) + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) return; - checks [((W)w)->active - 1] = checks [--checkcnt]; + { + int active = ev_active (w); + + checks [active - 1] = checks [--checkcnt]; + ev_active (checks [active - 1]) = active; + } + ev_stop (EV_A_ (W)w); } -#ifndef SA_RESTART -# define SA_RESTART 0 +#if EV_EMBED_ENABLE +void noinline +ev_embed_sweep (EV_P_ ev_embed *w) +{ + ev_loop (w->other, EVLOOP_NONBLOCK); +} + +static void +embed_io_cb (EV_P_ ev_io *io, int revents) +{ + ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); + + if (ev_cb (w)) + ev_feed_event (EV_A_ (W)w, EV_EMBED); + else + ev_loop (w->other, EVLOOP_NONBLOCK); +} + +static void +embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) +{ + ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); + + { + struct ev_loop *loop = w->other; + + while (fdchangecnt) + { + fd_reify (EV_A); + ev_loop (EV_A_ EVLOOP_NONBLOCK); + } + } +} + +#if 0 +static void +embed_idle_cb (EV_P_ ev_idle *idle, int revents) +{ + ev_idle_stop (EV_A_ idle); +} #endif void -ev_signal_start (EV_P_ struct ev_signal *w) +ev_embed_start (EV_P_ ev_embed *w) { -#if EV_MULTIPLICITY - assert (("signal watchers are only supported in the default loop", loop == default_loop)); -#endif - if (ev_is_active (w)) + if (expect_false (ev_is_active (w))) return; - assert (("ev_signal_start called with illegal signal number", w->signum > 0)); + { + struct ev_loop *loop = w->other; + assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); + ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); + } + + ev_set_priority (&w->io, ev_priority (w)); + ev_io_start (EV_A_ &w->io); + + ev_prepare_init (&w->prepare, embed_prepare_cb); + ev_set_priority (&w->prepare, EV_MINPRI); + ev_prepare_start (EV_A_ &w->prepare); - 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); + /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ - 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_start (EV_A_ (W)w, 1); } void -ev_signal_stop (EV_P_ struct ev_signal *w) +ev_embed_stop (EV_P_ ev_embed *w) { - ev_clear_pending (EV_A_ (W)w); - if (!ev_is_active (w)) + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) return; - wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); + ev_io_stop (EV_A_ &w->io); + ev_prepare_stop (EV_A_ &w->prepare); + ev_stop (EV_A_ (W)w); +} +#endif - if (!signals [w->signum - 1].head) - signal (w->signum, SIG_DFL); +#if EV_FORK_ENABLE +void +ev_fork_start (EV_P_ ev_fork *w) +{ + if (expect_false (ev_is_active (w))) + return; + + ev_start (EV_A_ (W)w, ++forkcnt); + array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); + forks [forkcnt - 1] = w; } void -ev_child_start (EV_P_ struct ev_child *w) +ev_fork_stop (EV_P_ ev_fork *w) { -#if EV_MULTIPLICITY - assert (("child watchers are only supported in the default loop", loop == default_loop)); + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + { + int active = ev_active (w); + + forks [active - 1] = forks [--forkcnt]; + ev_active (forks [active - 1]) = active; + } + + ev_stop (EV_A_ (W)w); +} #endif - if (ev_is_active (w)) + +#if EV_ASYNC_ENABLE +void +ev_async_start (EV_P_ ev_async *w) +{ + if (expect_false (ev_is_active (w))) return; - ev_start (EV_A_ (W)w, 1); - wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); + evpipe_init (EV_A); + + ev_start (EV_A_ (W)w, ++asynccnt); + array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); + asyncs [asynccnt - 1] = w; } void -ev_child_stop (EV_P_ struct ev_child *w) +ev_async_stop (EV_P_ ev_async *w) { - ev_clear_pending (EV_A_ (W)w); - if (!ev_is_active (w)) + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) return; - wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); + { + int active = ev_active (w); + + asyncs [active - 1] = asyncs [--asynccnt]; + ev_active (asyncs [active - 1]) = active; + } + ev_stop (EV_A_ (W)w); } +void +ev_async_send (EV_P_ ev_async *w) +{ + w->sent = 1; + evpipe_write (EV_A_ &gotasync); +} +#endif + /*****************************************************************************/ struct ev_once { - struct ev_io io; - struct ev_timer to; + ev_io io; + ev_timer to; void (*cb)(int revents, void *arg); void *arg; }; @@ -1599,13 +2612,13 @@ } static void -once_cb_io (EV_P_ struct ev_io *w, int revents) +once_cb_io (EV_P_ ev_io *w, int revents) { once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); } static void -once_cb_to (EV_P_ struct ev_timer *w, int revents) +once_cb_to (EV_P_ ev_timer *w, int revents) { once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); } @@ -1615,29 +2628,34 @@ { 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); - else + if (expect_false (!once)) { - once->cb = cb; - once->arg = arg; + cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); + return; + } - ev_init (&once->io, once_cb_io); - if (fd >= 0) - { - ev_io_set (&once->io, fd, events); - ev_io_start (EV_A_ &once->io); - } + once->cb = cb; + once->arg = arg; - ev_init (&once->to, once_cb_to); - if (timeout >= 0.) - { - ev_timer_set (&once->to, timeout, 0.); - ev_timer_start (EV_A_ &once->to); - } + 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_init (&once->to, once_cb_to); + if (timeout >= 0.) + { + ev_timer_set (&once->to, timeout, 0.); + ev_timer_start (EV_A_ &once->to); } } +#if EV_MULTIPLICITY + #include "ev_wrap.h" +#endif + #ifdef __cplusplus } #endif