… | |
… | |
342 | Example: Restrict libev to the select and poll backends, and do not allow |
342 | Example: Restrict libev to the select and poll backends, and do not allow |
343 | environment settings to be taken into account: |
343 | environment settings to be taken into account: |
344 | |
344 | |
345 | ev_default_loop (EVBACKEND_POLL | EVBACKEND_SELECT | EVFLAG_NOENV); |
345 | ev_default_loop (EVBACKEND_POLL | EVBACKEND_SELECT | EVFLAG_NOENV); |
346 | |
346 | |
347 | Example: Use whatever libev has to offer, but make sure that kqueue is |
|
|
348 | used if available (warning, breaks stuff, best use only with your own |
|
|
349 | private event loop and only if you know the OS supports your types of |
|
|
350 | fds): |
|
|
351 | |
|
|
352 | ev_default_loop (ev_recommended_backends () | EVBACKEND_KQUEUE); |
|
|
353 | |
|
|
354 | =item struct ev_loop *ev_loop_new (unsigned int flags) |
347 | =item struct ev_loop *ev_loop_new (unsigned int flags) |
355 | |
348 | |
356 | This will create and initialise a new event loop object. If the loop |
349 | This will create and initialise a new event loop object. If the loop |
357 | could not be initialised, returns false. |
350 | could not be initialised, returns false. |
358 | |
351 | |
… | |
… | |
589 | Example: Try to create a event loop that uses epoll and nothing else. |
582 | Example: Try to create a event loop that uses epoll and nothing else. |
590 | |
583 | |
591 | struct ev_loop *epoller = ev_loop_new (EVBACKEND_EPOLL | EVFLAG_NOENV); |
584 | struct ev_loop *epoller = ev_loop_new (EVBACKEND_EPOLL | EVFLAG_NOENV); |
592 | if (!epoller) |
585 | if (!epoller) |
593 | fatal ("no epoll found here, maybe it hides under your chair"); |
586 | fatal ("no epoll found here, maybe it hides under your chair"); |
|
|
587 | |
|
|
588 | Example: Use whatever libev has to offer, but make sure that kqueue is |
|
|
589 | used if available. |
|
|
590 | |
|
|
591 | struct ev_loop *loop = ev_loop_new (ev_recommended_backends () | EVBACKEND_KQUEUE); |
594 | |
592 | |
595 | =item ev_loop_destroy (loop) |
593 | =item ev_loop_destroy (loop) |
596 | |
594 | |
597 | Destroys an event loop object (frees all memory and kernel state |
595 | Destroys an event loop object (frees all memory and kernel state |
598 | etc.). None of the active event watchers will be stopped in the normal |
596 | etc.). None of the active event watchers will be stopped in the normal |
… | |
… | |
1114 | =item C<EV_FORK> |
1112 | =item C<EV_FORK> |
1115 | |
1113 | |
1116 | The event loop has been resumed in the child process after fork (see |
1114 | The event loop has been resumed in the child process after fork (see |
1117 | C<ev_fork>). |
1115 | C<ev_fork>). |
1118 | |
1116 | |
|
|
1117 | =item C<EV_CLEANUP> |
|
|
1118 | |
|
|
1119 | The event loop is abotu to be destroyed (see C<ev_cleanup>). |
|
|
1120 | |
1119 | =item C<EV_ASYNC> |
1121 | =item C<EV_ASYNC> |
1120 | |
1122 | |
1121 | The given async watcher has been asynchronously notified (see C<ev_async>). |
1123 | The given async watcher has been asynchronously notified (see C<ev_async>). |
1122 | |
1124 | |
1123 | =item C<EV_CUSTOM> |
1125 | =item C<EV_CUSTOM> |
… | |
… | |
3092 | |
3094 | |
3093 | =head3 Watcher-Specific Functions and Data Members |
3095 | =head3 Watcher-Specific Functions and Data Members |
3094 | |
3096 | |
3095 | =over 4 |
3097 | =over 4 |
3096 | |
3098 | |
3097 | =item ev_fork_init (ev_signal *, callback) |
3099 | =item ev_fork_init (ev_fork *, callback) |
3098 | |
3100 | |
3099 | Initialises and configures the fork watcher - it has no parameters of any |
3101 | Initialises and configures the fork watcher - it has no parameters of any |
3100 | kind. There is a C<ev_fork_set> macro, but using it is utterly pointless, |
3102 | kind. There is a C<ev_fork_set> macro, but using it is utterly pointless, |
3101 | believe me. |
3103 | believe me. |
3102 | |
3104 | |
3103 | =back |
3105 | =back |
|
|
3106 | |
|
|
3107 | |
|
|
3108 | =head2 C<ev_cleanup> - even the best things end |
|
|
3109 | |
|
|
3110 | Cleanup watchers are called just before the event loop they are registered |
|
|
3111 | with is being destroyed. |
|
|
3112 | |
|
|
3113 | While there is no guarantee that the event loop gets destroyed, cleanup |
|
|
3114 | watchers provide a convenient method to install cleanup hooks for your |
|
|
3115 | program, worker threads and so on - you just to make sure to destroy the |
|
|
3116 | loop when you want them to be invoked. |
|
|
3117 | |
|
|
3118 | =head3 Watcher-Specific Functions and Data Members |
|
|
3119 | |
|
|
3120 | =over 4 |
|
|
3121 | |
|
|
3122 | =item ev_cleanup_init (ev_cleanup *, callback) |
|
|
3123 | |
|
|
3124 | Initialises and configures the cleanup watcher - it has no parameters of |
|
|
3125 | any kind. There is a C<ev_cleanup_set> macro, but using it is utterly |
|
|
3126 | pointless, believe me. |
|
|
3127 | |
|
|
3128 | =back |
|
|
3129 | |
|
|
3130 | Example: Register an atexit handler to destroy the default loop, so any |
|
|
3131 | cleanup functions are called. |
|
|
3132 | |
|
|
3133 | static void |
|
|
3134 | program_exits (void) |
|
|
3135 | { |
|
|
3136 | ev_loop_destroy (EV_DEFAULT_UC); |
|
|
3137 | } |
|
|
3138 | |
|
|
3139 | ... |
|
|
3140 | atexit (program_exits); |
3104 | |
3141 | |
3105 | |
3142 | |
3106 | =head2 C<ev_async> - how to wake up an event loop |
3143 | =head2 C<ev_async> - how to wake up an event loop |
3107 | |
3144 | |
3108 | In general, you cannot use an C<ev_run> from multiple threads or other |
3145 | In general, you cannot use an C<ev_run> from multiple threads or other |
… | |
… | |
4842 | |
4879 | |
4843 | =item C<ev_default_destroy> and C<ev_default_fork> have been removed |
4880 | =item C<ev_default_destroy> and C<ev_default_fork> have been removed |
4844 | |
4881 | |
4845 | These calls can be replaced easily by their C<ev_loop_xxx> counterparts: |
4882 | These calls can be replaced easily by their C<ev_loop_xxx> counterparts: |
4846 | |
4883 | |
4847 | ev_loop_destroy (EV_DEFAULT); |
4884 | ev_loop_destroy (EV_DEFAULT_UC); |
4848 | ev_loop_fork (EV_DEFAULT); |
4885 | ev_loop_fork (EV_DEFAULT); |
4849 | |
4886 | |
4850 | =item function/symbol renames |
4887 | =item function/symbol renames |
4851 | |
4888 | |
4852 | A number of functions and symbols have been renamed: |
4889 | A number of functions and symbols have been renamed: |