--- libev/ev.h 2008/04/09 14:39:28 1.97 +++ libev/ev.h 2009/07/08 02:46:05 1.116 @@ -1,7 +1,7 @@ /* * libev native API header * - * Copyright (c) 2007,2008 Marc Alexander Lehmann + * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann * All rights reserved. * * Redistribution and use in source and binary forms, with or without modifica- @@ -82,6 +82,10 @@ # define EV_ASYNC_ENABLE 1 #endif +#ifndef EV_WALK_ENABLE +# define EV_WALK_ENABLE 0 /* not yet */ +#endif + #ifndef EV_ATOMIC_T # include # define EV_ATOMIC_T sig_atomic_t volatile @@ -90,6 +94,10 @@ /*****************************************************************************/ #if EV_STAT_ENABLE +# ifdef _WIN32 +# include +# include +# endif # include #endif @@ -125,23 +133,26 @@ /*****************************************************************************/ /* eventmask, revents, events... */ -#define EV_UNDEF -1L /* guaranteed to be invalid */ -#define EV_NONE 0x00L /* no events */ -#define EV_READ 0x01L /* ev_io detected read will not block */ -#define EV_WRITE 0x02L /* ev_io detected write will not block */ -#define EV_IOFDSET 0x80L /* internal use only */ -#define EV_TIMEOUT 0x00000100L /* timer timed out */ -#define EV_PERIODIC 0x00000200L /* periodic timer timed out */ -#define EV_SIGNAL 0x00000400L /* signal was received */ -#define EV_CHILD 0x00000800L /* child/pid had status change */ -#define EV_STAT 0x00001000L /* stat data changed */ -#define EV_IDLE 0x00002000L /* event loop is idling */ -#define EV_PREPARE 0x00004000L /* event loop about to poll */ -#define EV_CHECK 0x00008000L /* event loop finished poll */ -#define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ -#define EV_FORK 0x00020000L /* event loop resumed in child */ -#define EV_ASYNC 0x00040000L /* async intra-loop signal */ -#define EV_ERROR 0x80000000L /* sent when an error occurs */ +#define EV_UNDEF -1 /* guaranteed to be invalid */ +#define EV_NONE 0x00 /* no events */ +#define EV_READ 0x01 /* ev_io detected read will not block */ +#define EV_WRITE 0x02 /* ev_io detected write will not block */ +#define EV__IOFDSET 0x80 /* internal use only */ +#define EV_IO EV_READ /* alias for type-detection */ +#define EV_TIMEOUT 0x00000100 /* timer timed out */ +#define EV_TIMER EV_TIMEOUT /* alias for type-detection */ +#define EV_PERIODIC 0x00000200 /* periodic timer timed out */ +#define EV_SIGNAL 0x00000400 /* signal was received */ +#define EV_CHILD 0x00000800 /* child/pid had status change */ +#define EV_STAT 0x00001000 /* stat data changed */ +#define EV_IDLE 0x00002000 /* event loop is idling */ +#define EV_PREPARE 0x00004000 /* event loop about to poll */ +#define EV_CHECK 0x00008000 /* event loop finished poll */ +#define EV_EMBED 0x00010000 /* embedded event loop needs sweep */ +#define EV_FORK 0x00020000 /* event loop resumed in child */ +#define EV_ASYNC 0x00040000 /* async intra-loop signal */ +#define EV_CUSTOM 0x01000000 /* for use by user code */ +#define EV_ERROR 0x80000000 /* sent when an error occurs */ /* can be used to add custom fields to all watchers, while losing binary compatibility */ #ifndef EV_COMMON @@ -163,9 +174,19 @@ /* * struct member types: - * private: you can look at them, but not change them, and they might not mean anything to you. - * ro: can be read anytime, but only changed when the watcher isn't active - * rw: can be read and modified anytime, even when the watcher is active + * private: you may look at them, but not change them, + * and they might not mean anything to you. + * ro: can be read anytime, but only changed when the watcher isn't active. + * rw: can be read and modified anytime, even when the watcher is active. + * + * some internal details that might be helpful for debugging: + * + * active is either 0, which means the watcher is not active, + * or the array index of the watcher (periodics, timers) + * or the array index + 1 (most other watchers) + * or simply 1 for watchers that aren't in some array. + * pending is either 0, in which case the watcher isn't, + * or the array index + 1 in the pendings array. */ /* shared by all watchers */ @@ -324,7 +345,7 @@ ev_timer timer; /* unused */ ev_periodic periodic; /* unused */ ev_idle idle; /* unused */ - ev_fork fork; /* unused */ + ev_fork fork; /* private */ } ev_embed; #endif @@ -338,7 +359,7 @@ EV_ATOMIC_T sent; /* private */ } ev_async; -# define ev_async_pending(w) (((w)->sent + 0) +# define ev_async_pending(w) ((w)->sent + 0) #endif /* the presence of this union forces similar struct layout */ @@ -373,17 +394,17 @@ /* bits for ev_default_loop and ev_loop_new */ /* the default */ -#define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ +#define EVFLAG_AUTO 0x00000000U /* not quite a mask */ /* flag bits */ -#define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ -#define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */ +#define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ +#define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ /* method bits to be ored together */ -#define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ -#define EVBACKEND_POLL 0x00000002UL /* !win */ -#define EVBACKEND_EPOLL 0x00000004UL /* linux */ -#define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ -#define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ -#define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ +#define EVBACKEND_SELECT 0x00000001U /* about anywhere */ +#define EVBACKEND_POLL 0x00000002U /* !win */ +#define EVBACKEND_EPOLL 0x00000004U /* linux */ +#define EVBACKEND_KQUEUE 0x00000008U /* bsd */ +#define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */ +#define EVBACKEND_PORT 0x00000020U /* solaris 10 */ #if EV_PROTOTYPES int ev_version_major (void); @@ -410,7 +431,7 @@ */ void ev_set_syserr_cb (void (*cb)(const char *msg)); -# if EV_MULTIPLICITY +#if EV_MULTIPLICITY EV_INLINE struct ev_loop * ev_default_loop_uc (void) { @@ -442,8 +463,9 @@ void ev_loop_fork (EV_P); ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ +void ev_now_update (EV_P); -# else +#else int ev_default_loop (unsigned int flags); /* returns true when successful */ @@ -454,7 +476,7 @@ return ev_rt_now; } -# endif +#endif /* multiplicity */ EV_INLINE int ev_is_default_loop (EV_P) @@ -475,10 +497,20 @@ /* you can actually call it at any time, anywhere :) */ void ev_default_fork (void); -unsigned int ev_backend (EV_P); /* backend in use by loop */ -unsigned int ev_loop_count (EV_P); /* number of loop iterations */ +unsigned int ev_backend (EV_P); /* backend in use by loop */ +unsigned int ev_loop_count (EV_P); /* number of loop iterations */ +unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ +void ev_loop_verify (EV_P); /* abort if loop data corrupted */ + +#if EV_WALK_ENABLE +/* walk (almost) all watchers in the loop of a given type, invoking the */ +/* callback on every such watcher. The callback might stop the watcher, */ +/* but do nothing else with the loop */ +void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); #endif +#endif /* prototypes */ + #define EVLOOP_NONBLOCK 1 /* do not block/wait */ #define EVLOOP_ONESHOT 2 /* block *once* only */ #define EVUNLOOP_CANCEL 0 /* undo unloop */ @@ -500,8 +532,16 @@ void ev_ref (EV_P); void ev_unref (EV_P); -/* convinience function, wait for a single event, without registering an event watcher */ -/* if timeout is < 0, do wait indefinitely */ +/* + * stop/start the timer handling. + */ +void ev_suspend (EV_P); +void ev_resume (EV_P); + +/* + * convenience function, wait for a single event, without registering an event watcher + * if timeout is < 0, do wait indefinitely + */ void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); #endif @@ -514,41 +554,43 @@ ev_set_cb ((ev), cb_); \ } while (0) -#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) -#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) -#define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) -#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) -#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) -#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) -#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ -#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ -#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ -#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) -#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ -#define ev_async_set(ev) do { (ev)->sent = 0; } while (0) - -#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) -#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) -#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) -#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) -#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) -#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) -#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) -#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) -#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) -#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) -#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) -#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) - -#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ -#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ - -#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) -#define ev_cb(ev) (ev)->cb /* rw */ -#define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) +#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) +#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) +#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0) +#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) +#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) +#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) +#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ +#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ +#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ +#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) +#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ +#define ev_async_set(ev) do { (ev)->sent = 0; } while (0) + +#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) +#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) +#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) +#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) +#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) +#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) +#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) +#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) +#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) +#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) +#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) +#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) + +#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ +#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ + +#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) +#define ev_cb(ev) (ev)->cb /* rw */ +#define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) + +#define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.) #ifndef ev_set_cb -# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) +# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) #endif /* stopping (enabling, adding) a watcher does nothing if it is already running */