diff options
Diffstat (limited to 'libev/ev.h')
| -rw-r--r-- | libev/ev.h | 225 |
1 files changed, 120 insertions, 105 deletions
@@ -1,7 +1,7 @@ /* * libev native API header * - * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> + * Copyright (c) 2007,2008,2009,2010,2011,2012,2015 Marc Alexander Lehmann <libev@schmorp.de> * All rights reserved. * * Redistribution and use in source and binary forms, with or without modifica- @@ -42,8 +42,14 @@ #ifdef __cplusplus # define EV_CPP(x) x +# if __cplusplus >= 201103L +# define EV_THROW noexcept +# else +# define EV_THROW throw () +# endif #else # define EV_CPP(x) +# define EV_THROW #endif EV_CPP(extern "C" {) @@ -58,7 +64,11 @@ EV_CPP(extern "C" {) #endif #ifndef EV_FEATURES -# define EV_FEATURES 0x7f +# if defined __OPTIMIZE_SIZE__ +# define EV_FEATURES 0x7c +# else +# define EV_FEATURES 0x7f +# endif #endif #define EV_FEATURE_CODE ((EV_FEATURES) & 1) @@ -144,6 +154,8 @@ EV_CPP(extern "C" {) typedef double ev_tstamp; +#include <string.h> /* for memmove */ + #ifndef EV_ATOMIC_T # include <signal.h> # define EV_ATOMIC_T sig_atomic_t volatile @@ -201,33 +213,33 @@ struct ev_loop; /*****************************************************************************/ #define EV_VERSION_MAJOR 4 -#define EV_VERSION_MINOR 11 +#define EV_VERSION_MINOR 22 /* eventmask, revents, events... */ enum { - EV_UNDEF = 0xFFFFFFFF, /* guaranteed to be invalid */ - EV_NONE = 0x00, /* no events */ - EV_READ = 0x01, /* ev_io detected read will not block */ - EV_WRITE = 0x02, /* ev_io detected write will not block */ - EV__IOFDSET = 0x80, /* internal use only */ - EV_IO = EV_READ, /* alias for type-detection */ - EV_TIMER = 0x00000100, /* timer timed out */ + EV_UNDEF = (int)0xFFFFFFFF, /* guaranteed to be invalid */ + EV_NONE = 0x00, /* no events */ + EV_READ = 0x01, /* ev_io detected read will not block */ + EV_WRITE = 0x02, /* ev_io detected write will not block */ + EV__IOFDSET = 0x80, /* internal use only */ + EV_IO = EV_READ, /* alias for type-detection */ + EV_TIMER = 0x00000100, /* timer timed out */ #if EV_COMPAT3 - EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */ -#endif - EV_PERIODIC = 0x00000200, /* periodic timer timed out */ - EV_SIGNAL = 0x00000400, /* signal was received */ - EV_CHILD = 0x00000800, /* child/pid had status change */ - EV_STAT = 0x00001000, /* stat data changed */ - EV_IDLE = 0x00002000, /* event loop is idling */ - EV_PREPARE = 0x00004000, /* event loop about to poll */ - EV_CHECK = 0x00008000, /* event loop finished poll */ - EV_EMBED = 0x00010000, /* embedded event loop needs sweep */ - EV_FORK = 0x00020000, /* event loop resumed in child */ - EV_CLEANUP = 0x00040000, /* event loop resumed in child */ - EV_ASYNC = 0x00080000, /* async intra-loop signal */ - EV_CUSTOM = 0x01000000, /* for use by user code */ - EV_ERROR = 0x80000000 /* sent when an error occurs */ + EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */ +#endif + EV_PERIODIC = 0x00000200, /* periodic timer timed out */ + EV_SIGNAL = 0x00000400, /* signal was received */ + EV_CHILD = 0x00000800, /* child/pid had status change */ + EV_STAT = 0x00001000, /* stat data changed */ + EV_IDLE = 0x00002000, /* event loop is idling */ + EV_PREPARE = 0x00004000, /* event loop about to poll */ + EV_CHECK = 0x00008000, /* event loop finished poll */ + EV_EMBED = 0x00010000, /* embedded event loop needs sweep */ + EV_FORK = 0x00020000, /* event loop resumed in child */ + EV_CLEANUP = 0x00040000, /* event loop resumed in child */ + EV_ASYNC = 0x00080000, /* async intra-loop signal */ + EV_CUSTOM = 0x01000000, /* for use by user code */ + EV_ERROR = (int)0x80000000 /* sent when an error occurs */ }; /* can be used to add custom fields to all watchers, while losing binary compatibility */ @@ -329,7 +341,7 @@ typedef struct ev_periodic ev_tstamp offset; /* rw */ ev_tstamp interval; /* rw */ - ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ + ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) EV_THROW; /* rw */ } ev_periodic; /* invoked when the given signal has been received */ @@ -516,15 +528,15 @@ enum { }; #if EV_PROTOTYPES -EV_API_DECL int ev_version_major (void); -EV_API_DECL int ev_version_minor (void); +EV_API_DECL int ev_version_major (void) EV_THROW; +EV_API_DECL int ev_version_minor (void) EV_THROW; -EV_API_DECL unsigned int ev_supported_backends (void); -EV_API_DECL unsigned int ev_recommended_backends (void); -EV_API_DECL unsigned int ev_embeddable_backends (void); +EV_API_DECL unsigned int ev_supported_backends (void) EV_THROW; +EV_API_DECL unsigned int ev_recommended_backends (void) EV_THROW; +EV_API_DECL unsigned int ev_embeddable_backends (void) EV_THROW; -EV_API_DECL ev_tstamp ev_time (void); -EV_API_DECL void ev_sleep (ev_tstamp delay); /* sleep for a while */ +EV_API_DECL ev_tstamp ev_time (void) EV_THROW; +EV_API_DECL void ev_sleep (ev_tstamp delay) EV_THROW; /* sleep for a while */ /* Sets the allocation function to use, works like realloc. * It is used to allocate and free memory. @@ -532,26 +544,26 @@ EV_API_DECL void ev_sleep (ev_tstamp delay); /* sleep for a while */ * or take some potentially destructive action. * The default is your system realloc function. */ -EV_API_DECL void ev_set_allocator (void *(*cb)(void *ptr, long size)); +EV_API_DECL void ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW; /* set the callback function to call on a * retryable syscall error * (such as failed select, poll, epoll_wait) */ -EV_API_DECL void ev_set_syserr_cb (void (*cb)(const char *msg)); +EV_API_DECL void ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW; #if EV_MULTIPLICITY /* the default loop is the only one that handles signals and child watchers */ /* you can call this as often as you like */ -EV_API_DECL struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0)); +EV_API_DECL struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_THROW; #ifdef EV_API_STATIC EV_API_DECL struct ev_loop *ev_default_loop_ptr; #endif EV_INLINE struct ev_loop * -ev_default_loop_uc_ (void) +ev_default_loop_uc_ (void) EV_THROW { extern struct ev_loop *ev_default_loop_ptr; @@ -559,31 +571,31 @@ ev_default_loop_uc_ (void) } EV_INLINE int -ev_is_default_loop (EV_P) +ev_is_default_loop (EV_P) EV_THROW { return EV_A == EV_DEFAULT_UC; } /* create and destroy alternative loops that don't handle signals */ -EV_API_DECL struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0)); +EV_API_DECL struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0)) EV_THROW; -EV_API_DECL ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ +EV_API_DECL ev_tstamp ev_now (EV_P) EV_THROW; /* time w.r.t. timers and the eventloop, updated after each poll */ #else -EV_API_DECL int ev_default_loop (unsigned int flags EV_CPP (= 0)); /* returns true when successful */ +EV_API_DECL int ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_THROW; /* returns true when successful */ EV_API_DECL ev_tstamp ev_rt_now; EV_INLINE ev_tstamp -ev_now (void) +ev_now (void) EV_THROW { return ev_rt_now; } /* looks weird, but ev_is_default_loop (EV_A) still works if this exists */ EV_INLINE int -ev_is_default_loop (void) +ev_is_default_loop (void) EV_THROW { return 1; } @@ -597,17 +609,17 @@ EV_API_DECL void ev_loop_destroy (EV_P); /* when you want to re-use it in the child */ /* you can call it in either the parent or the child */ /* you can actually call it at any time, anywhere :) */ -EV_API_DECL void ev_loop_fork (EV_P); +EV_API_DECL void ev_loop_fork (EV_P) EV_THROW; -EV_API_DECL unsigned int ev_backend (EV_P); /* backend in use by loop */ +EV_API_DECL unsigned int ev_backend (EV_P) EV_THROW; /* backend in use by loop */ -EV_API_DECL void ev_now_update (EV_P); /* update event loop time */ +EV_API_DECL void ev_now_update (EV_P) EV_THROW; /* update event loop time */ #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 */ -EV_API_DECL void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); +EV_API_DECL void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW; #endif #endif /* prototypes */ @@ -626,45 +638,47 @@ enum { }; #if EV_PROTOTYPES -EV_API_DECL void ev_run (EV_P_ int flags EV_CPP (= 0)); -EV_API_DECL void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)); /* break out of the loop */ +EV_API_DECL int ev_run (EV_P_ int flags EV_CPP (= 0)); +EV_API_DECL void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)) EV_THROW; /* break out of the loop */ /* * ref/unref can be used to add or remove a refcount on the mainloop. every watcher * keeps one reference. if you have a long-running watcher you never unregister that * should not keep ev_loop from running, unref() after starting, and ref() before stopping. */ -EV_API_DECL void ev_ref (EV_P); -EV_API_DECL void ev_unref (EV_P); +EV_API_DECL void ev_ref (EV_P) EV_THROW; +EV_API_DECL void ev_unref (EV_P) EV_THROW; /* * convenience function, wait for a single event, without registering an event watcher * if timeout is < 0, do wait indefinitely */ -EV_API_DECL void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); +EV_API_DECL void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW; # if EV_FEATURE_API -EV_API_DECL unsigned int ev_iteration (EV_P); /* number of loop iterations */ -EV_API_DECL unsigned int ev_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ -EV_API_DECL void ev_verify (EV_P); /* abort if loop data corrupted */ +EV_API_DECL unsigned int ev_iteration (EV_P) EV_THROW; /* number of loop iterations */ +EV_API_DECL unsigned int ev_depth (EV_P) EV_THROW; /* #ev_loop enters - #ev_loop leaves */ +EV_API_DECL void ev_verify (EV_P) EV_THROW; /* abort if loop data corrupted */ -EV_API_DECL void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ -EV_API_DECL void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ +EV_API_DECL void ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW; /* sleep at least this time, default 0 */ +EV_API_DECL void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW; /* sleep at least this time, default 0 */ /* advanced stuff for threading etc. support, see docs */ -EV_API_DECL void ev_set_userdata (EV_P_ void *data); -EV_API_DECL void *ev_userdata (EV_P); -EV_API_DECL void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); -EV_API_DECL void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); - -EV_API_DECL unsigned int ev_pending_count (EV_P); /* number of pending events, if any */ +EV_API_DECL void ev_set_userdata (EV_P_ void *data) EV_THROW; +EV_API_DECL void *ev_userdata (EV_P) EV_THROW; +typedef void (*ev_loop_callback)(EV_P); +EV_API_DECL void ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW; +/* C++ doesn't allow the use of the ev_loop_callback typedef here, so we need to spell it out */ +EV_API_DECL void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW; + +EV_API_DECL unsigned int ev_pending_count (EV_P) EV_THROW; /* number of pending events, if any */ EV_API_DECL void ev_invoke_pending (EV_P); /* invoke all pending watchers */ /* * stop/start the timer handling. */ -EV_API_DECL void ev_suspend (EV_P); -EV_API_DECL void ev_resume (EV_P); +EV_API_DECL void ev_suspend (EV_P) EV_THROW; +EV_API_DECL void ev_resume (EV_P) EV_THROW; #endif #endif @@ -709,7 +723,8 @@ EV_API_DECL void ev_resume (EV_P); #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_cb(ev) (ev)->cb /* rw */ +#define ev_cb_(ev) (ev)->cb /* rw */ +#define ev_cb(ev) (memmove (&ev_cb_ (ev), &((ev_watcher *)(ev))->cb, sizeof (ev_cb_ (ev))), (ev)->cb) #if EV_MINPRI == EV_MAXPRI # define ev_priority(ev) ((ev), EV_MINPRI) @@ -722,94 +737,94 @@ EV_API_DECL void ev_resume (EV_P); #define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) #ifndef ev_set_cb -# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) +# define ev_set_cb(ev,cb_) (ev_cb_ (ev) = (cb_), memmove (&((ev_watcher *)(ev))->cb, &ev_cb_ (ev), sizeof (ev_cb_ (ev)))) #endif /* stopping (enabling, adding) a watcher does nothing if it is already running */ -/* stopping (disabling, deleting) a watcher does nothing unless its already running */ +/* stopping (disabling, deleting) a watcher does nothing unless it's already running */ #if EV_PROTOTYPES /* feeds an event into a watcher as if the event actually occurred */ /* accepts any ev_watcher type */ -EV_API_DECL void ev_feed_event (EV_P_ void *w, int revents); -EV_API_DECL void ev_feed_fd_event (EV_P_ int fd, int revents); +EV_API_DECL void ev_feed_event (EV_P_ void *w, int revents) EV_THROW; +EV_API_DECL void ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW; #if EV_SIGNAL_ENABLE -EV_API_DECL void ev_feed_signal (int signum); -EV_API_DECL void ev_feed_signal_event (EV_P_ int signum); +EV_API_DECL void ev_feed_signal (int signum) EV_THROW; +EV_API_DECL void ev_feed_signal_event (EV_P_ int signum) EV_THROW; #endif EV_API_DECL void ev_invoke (EV_P_ void *w, int revents); -EV_API_DECL int ev_clear_pending (EV_P_ void *w); +EV_API_DECL int ev_clear_pending (EV_P_ void *w) EV_THROW; -EV_API_DECL void ev_io_start (EV_P_ ev_io *w); -EV_API_DECL void ev_io_stop (EV_P_ ev_io *w); +EV_API_DECL void ev_io_start (EV_P_ ev_io *w) EV_THROW; +EV_API_DECL void ev_io_stop (EV_P_ ev_io *w) EV_THROW; -EV_API_DECL void ev_timer_start (EV_P_ ev_timer *w); -EV_API_DECL void ev_timer_stop (EV_P_ ev_timer *w); +EV_API_DECL void ev_timer_start (EV_P_ ev_timer *w) EV_THROW; +EV_API_DECL void ev_timer_stop (EV_P_ ev_timer *w) EV_THROW; /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ -EV_API_DECL void ev_timer_again (EV_P_ ev_timer *w); +EV_API_DECL void ev_timer_again (EV_P_ ev_timer *w) EV_THROW; /* return remaining time */ -EV_API_DECL ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w); +EV_API_DECL ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW; #if EV_PERIODIC_ENABLE -EV_API_DECL void ev_periodic_start (EV_P_ ev_periodic *w); -EV_API_DECL void ev_periodic_stop (EV_P_ ev_periodic *w); -EV_API_DECL void ev_periodic_again (EV_P_ ev_periodic *w); +EV_API_DECL void ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW; +EV_API_DECL void ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW; +EV_API_DECL void ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW; #endif /* only supported in the default loop */ #if EV_SIGNAL_ENABLE -EV_API_DECL void ev_signal_start (EV_P_ ev_signal *w); -EV_API_DECL void ev_signal_stop (EV_P_ ev_signal *w); +EV_API_DECL void ev_signal_start (EV_P_ ev_signal *w) EV_THROW; +EV_API_DECL void ev_signal_stop (EV_P_ ev_signal *w) EV_THROW; #endif /* only supported in the default loop */ # if EV_CHILD_ENABLE -EV_API_DECL void ev_child_start (EV_P_ ev_child *w); -EV_API_DECL void ev_child_stop (EV_P_ ev_child *w); +EV_API_DECL void ev_child_start (EV_P_ ev_child *w) EV_THROW; +EV_API_DECL void ev_child_stop (EV_P_ ev_child *w) EV_THROW; # endif # if EV_STAT_ENABLE -EV_API_DECL void ev_stat_start (EV_P_ ev_stat *w); -EV_API_DECL void ev_stat_stop (EV_P_ ev_stat *w); -EV_API_DECL void ev_stat_stat (EV_P_ ev_stat *w); +EV_API_DECL void ev_stat_start (EV_P_ ev_stat *w) EV_THROW; +EV_API_DECL void ev_stat_stop (EV_P_ ev_stat *w) EV_THROW; +EV_API_DECL void ev_stat_stat (EV_P_ ev_stat *w) EV_THROW; # endif # if EV_IDLE_ENABLE -EV_API_DECL void ev_idle_start (EV_P_ ev_idle *w); -EV_API_DECL void ev_idle_stop (EV_P_ ev_idle *w); +EV_API_DECL void ev_idle_start (EV_P_ ev_idle *w) EV_THROW; +EV_API_DECL void ev_idle_stop (EV_P_ ev_idle *w) EV_THROW; # endif #if EV_PREPARE_ENABLE -EV_API_DECL void ev_prepare_start (EV_P_ ev_prepare *w); -EV_API_DECL void ev_prepare_stop (EV_P_ ev_prepare *w); +EV_API_DECL void ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW; +EV_API_DECL void ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW; #endif #if EV_CHECK_ENABLE -EV_API_DECL void ev_check_start (EV_P_ ev_check *w); -EV_API_DECL void ev_check_stop (EV_P_ ev_check *w); +EV_API_DECL void ev_check_start (EV_P_ ev_check *w) EV_THROW; +EV_API_DECL void ev_check_stop (EV_P_ ev_check *w) EV_THROW; #endif # if EV_FORK_ENABLE -EV_API_DECL void ev_fork_start (EV_P_ ev_fork *w); -EV_API_DECL void ev_fork_stop (EV_P_ ev_fork *w); +EV_API_DECL void ev_fork_start (EV_P_ ev_fork *w) EV_THROW; +EV_API_DECL void ev_fork_stop (EV_P_ ev_fork *w) EV_THROW; # endif # if EV_CLEANUP_ENABLE -EV_API_DECL void ev_cleanup_start (EV_P_ ev_cleanup *w); -EV_API_DECL void ev_cleanup_stop (EV_P_ ev_cleanup *w); +EV_API_DECL void ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW; +EV_API_DECL void ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW; # endif # if EV_EMBED_ENABLE /* only supported when loop to be embedded is in fact embeddable */ -EV_API_DECL void ev_embed_start (EV_P_ ev_embed *w); -EV_API_DECL void ev_embed_stop (EV_P_ ev_embed *w); -EV_API_DECL void ev_embed_sweep (EV_P_ ev_embed *w); +EV_API_DECL void ev_embed_start (EV_P_ ev_embed *w) EV_THROW; +EV_API_DECL void ev_embed_stop (EV_P_ ev_embed *w) EV_THROW; +EV_API_DECL void ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW; # endif # if EV_ASYNC_ENABLE -EV_API_DECL void ev_async_start (EV_P_ ev_async *w); -EV_API_DECL void ev_async_stop (EV_P_ ev_async *w); -EV_API_DECL void ev_async_send (EV_P_ ev_async *w); +EV_API_DECL void ev_async_start (EV_P_ ev_async *w) EV_THROW; +EV_API_DECL void ev_async_stop (EV_P_ ev_async *w) EV_THROW; +EV_API_DECL void ev_async_send (EV_P_ ev_async *w) EV_THROW; # endif #if EV_COMPAT3 |