| 1 | /* |
1 | /* |
| 2 | * libev native API header |
2 | * libev native API header |
| 3 | * |
3 | * |
| 4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> |
| 5 | * All rights reserved. |
5 | * All rights reserved. |
| 6 | * |
6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
| 8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
| 9 | * |
9 | * |
| … | |
… | |
| 165 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
165 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
| 166 | #endif |
166 | #endif |
| 167 | |
167 | |
| 168 | /* |
168 | /* |
| 169 | * struct member types: |
169 | * struct member types: |
| 170 | * private: you can look at them, but not change them, and they might not mean anything to you. |
170 | * private: you may look at them, but not change them, |
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171 | * and they might not mean anything to you. |
| 171 | * ro: can be read anytime, but only changed when the watcher isn't active |
172 | * ro: can be read anytime, but only changed when the watcher isn't active. |
| 172 | * rw: can be read and modified anytime, even when the watcher is active |
173 | * rw: can be read and modified anytime, even when the watcher is active. |
| 173 | * |
174 | * |
| 174 | * some internal details that might be helpful for debugging: |
175 | * some internal details that might be helpful for debugging: |
| 175 | * |
176 | * |
| 176 | * active is either 0, which means the watcher is not active, |
177 | * active is either 0, which means the watcher is not active, |
| 177 | * or the array index of the watcher (periodics, timers) |
178 | * or the array index of the watcher (periodics, timers) |
| 178 | * or the array index + 1 (most other watchers) |
179 | * or the array index + 1 (most other watchers) |
| 179 | * or simply 1 for watchers that aren't in some array. |
180 | * or simply 1 for watchers that aren't in some array. |
| 180 | * pending is either 0, in which case the watcher isn't, |
181 | * pending is either 0, in which case the watcher isn't, |
| 181 | * or the array index + 1 in the pendings array. |
182 | * or the array index + 1 in the pendings array. |
| 182 | */ |
183 | */ |
| 183 | |
184 | |
| 184 | /* shared by all watchers */ |
185 | /* shared by all watchers */ |
| 185 | #define EV_WATCHER(type) \ |
186 | #define EV_WATCHER(type) \ |
| 186 | int active; /* private */ \ |
187 | int active; /* private */ \ |
| … | |
… | |
| 513 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
514 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
| 514 | */ |
515 | */ |
| 515 | void ev_ref (EV_P); |
516 | void ev_ref (EV_P); |
| 516 | void ev_unref (EV_P); |
517 | void ev_unref (EV_P); |
| 517 | |
518 | |
| 518 | /* convinience function, wait for a single event, without registering an event watcher */ |
519 | /* convenience function, wait for a single event, without registering an event watcher */ |
| 519 | /* if timeout is < 0, do wait indefinitely */ |
520 | /* if timeout is < 0, do wait indefinitely */ |
| 520 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
521 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
| 521 | #endif |
522 | #endif |
| 522 | |
523 | |
| 523 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
524 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
| … | |
… | |
| 527 | ((ev_watcher *)(void *)(ev))->pending = \ |
528 | ((ev_watcher *)(void *)(ev))->pending = \ |
| 528 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
529 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
| 529 | ev_set_cb ((ev), cb_); \ |
530 | ev_set_cb ((ev), cb_); \ |
| 530 | } while (0) |
531 | } while (0) |
| 531 | |
532 | |
| 532 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
533 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
| 533 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
534 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
| 534 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
535 | #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0) |
| 535 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
536 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
| 536 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
537 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
| 537 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
538 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
| 538 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
539 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
| 539 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
540 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
| 540 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
541 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
| 541 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
542 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
| 542 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
543 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
| 543 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
544 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
| 544 | |
545 | |
| 545 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
546 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
| 546 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
547 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
| 547 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
548 | #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) |
| 548 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
549 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
| 549 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
550 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
| 550 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
551 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
| 551 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
552 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
| 552 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
553 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
| 553 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
554 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
| 554 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
555 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
| 555 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
556 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
| 556 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
557 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
| 557 | |
558 | |
| 558 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
559 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
| 559 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
560 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
| 560 | |
561 | |
| 561 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
562 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
| 562 | #define ev_cb(ev) (ev)->cb /* rw */ |
563 | #define ev_cb(ev) (ev)->cb /* rw */ |
| 563 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
564 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
| 564 | |
565 | |
| 565 | #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.) |
566 | #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.) |
| 566 | |
567 | |
| 567 | #ifndef ev_set_cb |
568 | #ifndef ev_set_cb |
| 568 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
569 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
| 569 | #endif |
570 | #endif |
| 570 | |
571 | |
| 571 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
572 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
| 572 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
573 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
| 573 | #if EV_PROTOTYPES |
574 | #if EV_PROTOTYPES |
