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/* |
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* libev native API header |
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* |
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* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without modifica- |
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* tion, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* Alternatively, the contents of this file may be used under the terms of |
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* the GNU General Public License ("GPL") version 2 or any later version, |
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* in which case the provisions of the GPL are applicable instead of |
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* the above. If you wish to allow the use of your version of this file |
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* only under the terms of the GPL and not to allow others to use your |
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* version of this file under the BSD license, indicate your decision |
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* by deleting the provisions above and replace them with the notice |
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* and other provisions required by the GPL. If you do not delete the |
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* provisions above, a recipient may use your version of this file under |
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* either the BSD or the GPL. |
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*/ |
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#ifndef EV_H_ |
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#define EV_H_ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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typedef double ev_tstamp; |
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/* these priorities are inclusive, higher priorities will be called earlier */ |
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#ifndef EV_MINPRI |
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# define EV_MINPRI -2 |
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#endif |
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#ifndef EV_MAXPRI |
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# define EV_MAXPRI +2 |
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#endif |
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#ifndef EV_MULTIPLICITY |
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# define EV_MULTIPLICITY 1 |
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#endif |
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#ifndef EV_PERIODIC_ENABLE |
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# define EV_PERIODIC_ENABLE 1 |
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#endif |
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#ifndef EV_STAT_ENABLE |
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# define EV_STAT_ENABLE 1 |
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#endif |
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#ifndef EV_IDLE_ENABLE |
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# define EV_IDLE_ENABLE 1 |
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#endif |
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#ifndef EV_FORK_ENABLE |
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# define EV_FORK_ENABLE 1 |
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#endif |
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#ifndef EV_SIGNAL_ENABLE |
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# define EV_SIGNAL_ENABLE 1 |
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#endif |
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#ifndef EV_CHILD_ENABLE |
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# ifdef _WIN32 |
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# define EV_CHILD_ENABLE 0 |
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# else |
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# define EV_CHILD_ENABLE 1 |
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#endif |
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#endif |
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#ifndef EV_ASYNC_ENABLE |
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# define EV_ASYNC_ENABLE 1 |
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#endif |
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#ifndef EV_EMBED_ENABLE |
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# define EV_EMBED_ENABLE 1 |
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#endif |
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#ifndef EV_WALK_ENABLE |
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# define EV_WALK_ENABLE 0 /* not yet */ |
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#endif |
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#ifndef EV_ATOMIC_T |
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# include <signal.h> |
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# define EV_ATOMIC_T sig_atomic_t volatile |
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#endif |
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/*****************************************************************************/ |
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#if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE |
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# undef EV_SIGNAL_ENABLE |
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# define EV_SIGNAL_ENABLE 1 |
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#endif |
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#if EV_STAT_ENABLE |
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# ifdef _WIN32 |
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# include <time.h> |
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# include <sys/types.h> |
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# endif |
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# include <sys/stat.h> |
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#endif |
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/* support multiple event loops? */ |
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#if EV_MULTIPLICITY |
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struct ev_loop; |
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# define EV_P struct ev_loop *loop |
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# define EV_P_ EV_P, |
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# define EV_A loop |
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# define EV_A_ EV_A, |
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# define EV_DEFAULT_UC ev_default_loop_uc () |
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# define EV_DEFAULT_UC_ EV_DEFAULT_UC, |
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# define EV_DEFAULT ev_default_loop (0) |
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# define EV_DEFAULT_ EV_DEFAULT, |
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#else |
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# define EV_P void |
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# define EV_P_ |
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# define EV_A |
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# define EV_A_ |
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# define EV_DEFAULT |
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# define EV_DEFAULT_ |
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# define EV_DEFAULT_UC |
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# define EV_DEFAULT_UC_ |
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# undef EV_EMBED_ENABLE |
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#endif |
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#if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
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# define EV_INLINE static inline |
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#else |
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# define EV_INLINE static |
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#endif |
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/*****************************************************************************/ |
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/* eventmask, revents, events... */ |
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#define EV_UNDEF -1 /* guaranteed to be invalid */ |
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#define EV_NONE 0x00 /* no events */ |
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#define EV_READ 0x01 /* ev_io detected read will not block */ |
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#define EV_WRITE 0x02 /* ev_io detected write will not block */ |
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#define EV__IOFDSET 0x80 /* internal use only */ |
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#define EV_IO EV_READ /* alias for type-detection */ |
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#define EV_TIMEOUT 0x00000100 /* timer timed out */ |
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#define EV_TIMER EV_TIMEOUT /* alias for type-detection */ |
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#define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
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#define EV_SIGNAL 0x00000400 /* signal was received */ |
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#define EV_CHILD 0x00000800 /* child/pid had status change */ |
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#define EV_STAT 0x00001000 /* stat data changed */ |
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#define EV_IDLE 0x00002000 /* event loop is idling */ |
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#define EV_PREPARE 0x00004000 /* event loop about to poll */ |
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#define EV_CHECK 0x00008000 /* event loop finished poll */ |
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#define EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
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#define EV_FORK 0x00020000 /* event loop resumed in child */ |
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#define EV_ASYNC 0x00040000 /* async intra-loop signal */ |
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#define EV_CUSTOM 0x01000000 /* for use by user code */ |
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#define EV_ERROR 0x80000000 /* sent when an error occurs */ |
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/* can be used to add custom fields to all watchers, while losing binary compatibility */ |
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#ifndef EV_COMMON |
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# define EV_COMMON void *data; |
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#endif |
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#ifndef EV_PROTOTYPES |
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# define EV_PROTOTYPES 1 |
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#endif |
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#define EV_VERSION_MAJOR 3 |
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#define EV_VERSION_MINOR 9 |
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|
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#ifndef EV_CB_DECLARE |
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# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
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#endif |
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#ifndef EV_CB_INVOKE |
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# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
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#endif |
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/* |
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* struct member types: |
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* private: you may look at them, but not change them, |
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* and they might not mean anything to you. |
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* ro: can be read anytime, but only changed when the watcher isn't active. |
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* rw: can be read and modified anytime, even when the watcher is active. |
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* |
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* some internal details that might be helpful for debugging: |
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* |
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* active is either 0, which means the watcher is not active, |
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* or the array index of the watcher (periodics, timers) |
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* or the array index + 1 (most other watchers) |
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* or simply 1 for watchers that aren't in some array. |
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* pending is either 0, in which case the watcher isn't, |
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* or the array index + 1 in the pendings array. |
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*/ |
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#if EV_MINPRI == EV_MAXPRI |
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# define EV_DECL_PRIORITY |
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#else |
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# define EV_DECL_PRIORITY int priority; |
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#endif |
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/* shared by all watchers */ |
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#define EV_WATCHER(type) \ |
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int active; /* private */ \ |
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int pending; /* private */ \ |
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EV_DECL_PRIORITY /* private */ \ |
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EV_COMMON /* rw */ \ |
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EV_CB_DECLARE (type) /* private */ |
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#define EV_WATCHER_LIST(type) \ |
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EV_WATCHER (type) \ |
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struct ev_watcher_list *next; /* private */ |
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#define EV_WATCHER_TIME(type) \ |
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EV_WATCHER (type) \ |
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ev_tstamp at; /* private */ |
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/* base class, nothing to see here unless you subclass */ |
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typedef struct ev_watcher |
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{ |
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EV_WATCHER (ev_watcher) |
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} ev_watcher; |
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/* base class, nothing to see here unless you subclass */ |
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typedef struct ev_watcher_list |
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{ |
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EV_WATCHER_LIST (ev_watcher_list) |
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} ev_watcher_list; |
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/* base class, nothing to see here unless you subclass */ |
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typedef struct ev_watcher_time |
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{ |
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EV_WATCHER_TIME (ev_watcher_time) |
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} ev_watcher_time; |
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/* invoked when fd is either EV_READable or EV_WRITEable */ |
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/* revent EV_READ, EV_WRITE */ |
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typedef struct ev_io |
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{ |
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EV_WATCHER_LIST (ev_io) |
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int fd; /* ro */ |
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int events; /* ro */ |
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} ev_io; |
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/* invoked after a specific time, repeatable (based on monotonic clock) */ |
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/* revent EV_TIMEOUT */ |
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typedef struct ev_timer |
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{ |
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EV_WATCHER_TIME (ev_timer) |
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ev_tstamp repeat; /* rw */ |
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} ev_timer; |
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/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
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/* revent EV_PERIODIC */ |
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typedef struct ev_periodic |
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{ |
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EV_WATCHER_TIME (ev_periodic) |
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|
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ev_tstamp offset; /* rw */ |
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ev_tstamp interval; /* rw */ |
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ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
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} ev_periodic; |
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|
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/* invoked when the given signal has been received */ |
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/* revent EV_SIGNAL */ |
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typedef struct ev_signal |
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{ |
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EV_WATCHER_LIST (ev_signal) |
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|
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int signum; /* ro */ |
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} ev_signal; |
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|
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/* invoked when sigchld is received and waitpid indicates the given pid */ |
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/* revent EV_CHILD */ |
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/* does not support priorities */ |
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typedef struct ev_child |
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{ |
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EV_WATCHER_LIST (ev_child) |
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int flags; /* private */ |
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int pid; /* ro */ |
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int rpid; /* rw, holds the received pid */ |
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int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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} ev_child; |
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#if EV_STAT_ENABLE |
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/* st_nlink = 0 means missing file or other error */ |
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1.74 |
# ifdef _WIN32 |
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1.71 |
typedef struct _stati64 ev_statdata; |
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1.74 |
# else |
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typedef struct stat ev_statdata; |
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1.74 |
# endif |
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1.70 |
|
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/* invoked each time the stat data changes for a given path */ |
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/* revent EV_STAT */ |
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typedef struct ev_stat |
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{ |
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1.74 |
EV_WATCHER_LIST (ev_stat) |
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1.70 |
|
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ev_timer timer; /* private */ |
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ev_tstamp interval; /* ro */ |
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const char *path; /* ro */ |
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ev_statdata prev; /* ro */ |
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ev_statdata attr; /* ro */ |
320 |
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1.74 |
|
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int wd; /* wd for inotify, fd for kqueue */ |
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1.70 |
} ev_stat; |
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#endif |
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1.78 |
#if EV_IDLE_ENABLE |
326 |
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1.5 |
/* invoked when the nothing else needs to be done, keeps the process from blocking */ |
327 |
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1.17 |
/* revent EV_IDLE */ |
328 |
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1.66 |
typedef struct ev_idle |
329 |
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1.5 |
{ |
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1.52 |
EV_WATCHER (ev_idle) |
331 |
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1.66 |
} ev_idle; |
332 |
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1.78 |
#endif |
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1.5 |
|
334 |
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1.11 |
/* invoked for each run of the mainloop, just before the blocking call */ |
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/* you can still change events in any way you like */ |
336 |
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1.17 |
/* revent EV_PREPARE */ |
337 |
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1.66 |
typedef struct ev_prepare |
338 |
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1.11 |
{ |
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1.52 |
EV_WATCHER (ev_prepare) |
340 |
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1.66 |
} ev_prepare; |
341 |
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1.11 |
|
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/* invoked for each run of the mainloop, just after the blocking call */ |
343 |
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1.17 |
/* revent EV_CHECK */ |
344 |
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1.66 |
typedef struct ev_check |
345 |
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1.5 |
{ |
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1.52 |
EV_WATCHER (ev_check) |
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1.66 |
} ev_check; |
348 |
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1.5 |
|
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1.72 |
#if EV_FORK_ENABLE |
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/* the callback gets invoked before check in the child process when a fork was detected */ |
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typedef struct ev_fork |
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{ |
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EV_WATCHER (ev_fork) |
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} ev_fork; |
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#endif |
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357 |
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1.69 |
#if EV_EMBED_ENABLE |
358 |
root |
1.64 |
/* used to embed an event loop inside another */ |
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/* the callback gets invoked when the event loop has handled events, and can be 0 */ |
360 |
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1.66 |
typedef struct ev_embed |
361 |
root |
1.64 |
{ |
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EV_WATCHER (ev_embed) |
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|
364 |
root |
1.86 |
struct ev_loop *other; /* ro */ |
365 |
root |
1.87 |
ev_io io; /* private */ |
366 |
|
|
ev_prepare prepare; /* private */ |
367 |
|
|
ev_check check; /* unused */ |
368 |
|
|
ev_timer timer; /* unused */ |
369 |
|
|
ev_periodic periodic; /* unused */ |
370 |
|
|
ev_idle idle; /* unused */ |
371 |
root |
1.106 |
ev_fork fork; /* private */ |
372 |
root |
1.66 |
} ev_embed; |
373 |
root |
1.64 |
#endif |
374 |
|
|
|
375 |
root |
1.92 |
#if EV_ASYNC_ENABLE |
376 |
|
|
/* invoked when somebody calls ev_async_send on the watcher */ |
377 |
|
|
/* revent EV_ASYNC */ |
378 |
|
|
typedef struct ev_async |
379 |
|
|
{ |
380 |
|
|
EV_WATCHER (ev_async) |
381 |
|
|
|
382 |
|
|
EV_ATOMIC_T sent; /* private */ |
383 |
|
|
} ev_async; |
384 |
root |
1.95 |
|
385 |
root |
1.128 |
# define ev_async_pending(w) (+(w)->sent) |
386 |
root |
1.92 |
#endif |
387 |
|
|
|
388 |
root |
1.41 |
/* the presence of this union forces similar struct layout */ |
389 |
root |
1.35 |
union ev_any_watcher |
390 |
|
|
{ |
391 |
|
|
struct ev_watcher w; |
392 |
|
|
struct ev_watcher_list wl; |
393 |
root |
1.46 |
|
394 |
root |
1.35 |
struct ev_io io; |
395 |
|
|
struct ev_timer timer; |
396 |
|
|
struct ev_periodic periodic; |
397 |
root |
1.72 |
struct ev_signal signal; |
398 |
root |
1.70 |
struct ev_child child; |
399 |
|
|
#if EV_STAT_ENABLE |
400 |
|
|
struct ev_stat stat; |
401 |
|
|
#endif |
402 |
root |
1.78 |
#if EV_IDLE_ENABLE |
403 |
root |
1.35 |
struct ev_idle idle; |
404 |
root |
1.78 |
#endif |
405 |
root |
1.35 |
struct ev_prepare prepare; |
406 |
|
|
struct ev_check check; |
407 |
root |
1.72 |
#if EV_FORK_ENABLE |
408 |
|
|
struct ev_fork fork; |
409 |
|
|
#endif |
410 |
root |
1.69 |
#if EV_EMBED_ENABLE |
411 |
root |
1.64 |
struct ev_embed embed; |
412 |
root |
1.67 |
#endif |
413 |
root |
1.97 |
#if EV_ASYNC_ENABLE |
414 |
root |
1.92 |
struct ev_async async; |
415 |
|
|
#endif |
416 |
root |
1.35 |
}; |
417 |
|
|
|
418 |
root |
1.53 |
/* bits for ev_default_loop and ev_loop_new */ |
419 |
|
|
/* the default */ |
420 |
root |
1.99 |
#define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
421 |
root |
1.63 |
/* flag bits */ |
422 |
root |
1.99 |
#define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
423 |
|
|
#define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
424 |
root |
1.124 |
/* debugging/feature disable */ |
425 |
|
|
#define EVFLAG_NOINOTIFY 0x00100000U /* do not attempt to use inotify */ |
426 |
root |
1.129 |
#define EVFLAG_NOSIGFD 0 /* compatibility to pre-3.9 */ |
427 |
|
|
#define EVFLAG_SIGNALFD 0x00200000U /* attempt to use signalfd */ |
428 |
root |
1.53 |
/* method bits to be ored together */ |
429 |
root |
1.99 |
#define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
430 |
|
|
#define EVBACKEND_POLL 0x00000002U /* !win */ |
431 |
|
|
#define EVBACKEND_EPOLL 0x00000004U /* linux */ |
432 |
|
|
#define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
433 |
|
|
#define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */ |
434 |
|
|
#define EVBACKEND_PORT 0x00000020U /* solaris 10 */ |
435 |
root |
1.127 |
#define EVBACKEND_ALL 0x0000003FU |
436 |
root |
1.29 |
|
437 |
root |
1.9 |
#if EV_PROTOTYPES |
438 |
root |
1.14 |
int ev_version_major (void); |
439 |
|
|
int ev_version_minor (void); |
440 |
root |
1.1 |
|
441 |
root |
1.63 |
unsigned int ev_supported_backends (void); |
442 |
|
|
unsigned int ev_recommended_backends (void); |
443 |
root |
1.64 |
unsigned int ev_embeddable_backends (void); |
444 |
root |
1.63 |
|
445 |
root |
1.1 |
ev_tstamp ev_time (void); |
446 |
root |
1.88 |
void ev_sleep (ev_tstamp delay); /* sleep for a while */ |
447 |
root |
1.29 |
|
448 |
root |
1.36 |
/* Sets the allocation function to use, works like realloc. |
449 |
|
|
* It is used to allocate and free memory. |
450 |
|
|
* If it returns zero when memory needs to be allocated, the library might abort |
451 |
|
|
* or take some potentially destructive action. |
452 |
|
|
* The default is your system realloc function. |
453 |
|
|
*/ |
454 |
root |
1.75 |
void ev_set_allocator (void *(*cb)(void *ptr, long size)); |
455 |
root |
1.36 |
|
456 |
|
|
/* set the callback function to call on a |
457 |
|
|
* retryable syscall error |
458 |
|
|
* (such as failed select, poll, epoll_wait) |
459 |
|
|
*/ |
460 |
root |
1.37 |
void ev_set_syserr_cb (void (*cb)(const char *msg)); |
461 |
root |
1.36 |
|
462 |
root |
1.102 |
#if EV_MULTIPLICITY |
463 |
root |
1.96 |
EV_INLINE struct ev_loop * |
464 |
|
|
ev_default_loop_uc (void) |
465 |
|
|
{ |
466 |
|
|
extern struct ev_loop *ev_default_loop_ptr; |
467 |
|
|
|
468 |
|
|
return ev_default_loop_ptr; |
469 |
|
|
} |
470 |
|
|
|
471 |
root |
1.30 |
/* the default loop is the only one that handles signals and child watchers */ |
472 |
|
|
/* you can call this as often as you like */ |
473 |
root |
1.96 |
EV_INLINE struct ev_loop * |
474 |
root |
1.58 |
ev_default_loop (unsigned int flags) |
475 |
|
|
{ |
476 |
root |
1.96 |
struct ev_loop *loop = ev_default_loop_uc (); |
477 |
|
|
|
478 |
|
|
if (!loop) |
479 |
|
|
{ |
480 |
|
|
extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
481 |
root |
1.58 |
|
482 |
root |
1.96 |
loop = ev_default_loop_init (flags); |
483 |
|
|
} |
484 |
root |
1.58 |
|
485 |
root |
1.96 |
return loop; |
486 |
root |
1.58 |
} |
487 |
root |
1.30 |
|
488 |
|
|
/* create and destroy alternative loops that don't handle signals */ |
489 |
root |
1.53 |
struct ev_loop *ev_loop_new (unsigned int flags); |
490 |
root |
1.30 |
void ev_loop_destroy (EV_P); |
491 |
|
|
void ev_loop_fork (EV_P); |
492 |
root |
1.47 |
|
493 |
|
|
ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
494 |
|
|
|
495 |
root |
1.102 |
#else |
496 |
root |
1.47 |
|
497 |
root |
1.54 |
int ev_default_loop (unsigned int flags); /* returns true when successful */ |
498 |
root |
1.47 |
|
499 |
root |
1.96 |
EV_INLINE ev_tstamp |
500 |
root |
1.52 |
ev_now (void) |
501 |
root |
1.47 |
{ |
502 |
root |
1.48 |
extern ev_tstamp ev_rt_now; |
503 |
root |
1.47 |
|
504 |
|
|
return ev_rt_now; |
505 |
|
|
} |
506 |
root |
1.102 |
#endif /* multiplicity */ |
507 |
root |
1.29 |
|
508 |
root |
1.96 |
EV_INLINE int |
509 |
root |
1.94 |
ev_is_default_loop (EV_P) |
510 |
|
|
{ |
511 |
|
|
#if EV_MULTIPLICITY |
512 |
|
|
extern struct ev_loop *ev_default_loop_ptr; |
513 |
|
|
|
514 |
|
|
return !!(EV_A == ev_default_loop_ptr); |
515 |
|
|
#else |
516 |
|
|
return 1; |
517 |
|
|
#endif |
518 |
|
|
} |
519 |
|
|
|
520 |
root |
1.30 |
void ev_default_destroy (void); /* destroy the default loop */ |
521 |
|
|
/* this needs to be called after fork, to duplicate the default loop */ |
522 |
|
|
/* if you create alternative loops you have to call ev_loop_fork on them */ |
523 |
|
|
/* you can call it in either the parent or the child */ |
524 |
|
|
/* you can actually call it at any time, anywhere :) */ |
525 |
|
|
void ev_default_fork (void); |
526 |
|
|
|
527 |
root |
1.119 |
unsigned int ev_backend (EV_P); /* backend in use by loop */ |
528 |
root |
1.116 |
|
529 |
root |
1.119 |
void ev_now_update (EV_P); /* update event loop time */ |
530 |
root |
1.118 |
|
531 |
root |
1.115 |
#if EV_WALK_ENABLE |
532 |
root |
1.112 |
/* walk (almost) all watchers in the loop of a given type, invoking the */ |
533 |
|
|
/* callback on every such watcher. The callback might stop the watcher, */ |
534 |
|
|
/* but do nothing else with the loop */ |
535 |
|
|
void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); |
536 |
|
|
#endif |
537 |
|
|
|
538 |
root |
1.102 |
#endif /* prototypes */ |
539 |
root |
1.1 |
|
540 |
|
|
#define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
541 |
|
|
#define EVLOOP_ONESHOT 2 /* block *once* only */ |
542 |
root |
1.65 |
#define EVUNLOOP_CANCEL 0 /* undo unloop */ |
543 |
root |
1.57 |
#define EVUNLOOP_ONE 1 /* unloop once */ |
544 |
root |
1.29 |
#define EVUNLOOP_ALL 2 /* unloop all loops */ |
545 |
|
|
|
546 |
root |
1.9 |
#if EV_PROTOTYPES |
547 |
root |
1.27 |
void ev_loop (EV_P_ int flags); |
548 |
root |
1.29 |
void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
549 |
root |
1.27 |
|
550 |
|
|
/* |
551 |
|
|
* ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
552 |
root |
1.119 |
* keeps one reference. if you have a long-running watcher you never unregister that |
553 |
root |
1.27 |
* should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
554 |
|
|
*/ |
555 |
|
|
void ev_ref (EV_P); |
556 |
|
|
void ev_unref (EV_P); |
557 |
root |
1.1 |
|
558 |
root |
1.114 |
/* |
559 |
root |
1.119 |
* convenience function, wait for a single event, without registering an event watcher |
560 |
|
|
* if timeout is < 0, do wait indefinitely |
561 |
|
|
*/ |
562 |
|
|
void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
563 |
|
|
|
564 |
|
|
# if EV_MINIMAL < 2 |
565 |
|
|
unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
566 |
|
|
unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ |
567 |
|
|
void ev_loop_verify (EV_P); /* abort if loop data corrupted */ |
568 |
|
|
|
569 |
|
|
void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
570 |
|
|
void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
571 |
|
|
|
572 |
root |
1.120 |
/* advanced stuff for threading etc. support, see docs */ |
573 |
root |
1.119 |
void ev_set_userdata (EV_P_ void *data); |
574 |
|
|
void *ev_userdata (EV_P); |
575 |
|
|
void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); |
576 |
root |
1.120 |
void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); |
577 |
root |
1.119 |
|
578 |
root |
1.122 |
unsigned int ev_pending_count (EV_P); /* number of pending events, if any */ |
579 |
root |
1.119 |
void ev_invoke_pending (EV_P); /* invoke all pending watchers */ |
580 |
|
|
|
581 |
|
|
/* |
582 |
root |
1.114 |
* stop/start the timer handling. |
583 |
|
|
*/ |
584 |
|
|
void ev_suspend (EV_P); |
585 |
|
|
void ev_resume (EV_P); |
586 |
root |
1.119 |
#endif |
587 |
root |
1.114 |
|
588 |
root |
1.9 |
#endif |
589 |
|
|
|
590 |
root |
1.2 |
/* these may evaluate ev multiple times, and the other arguments at most once */ |
591 |
root |
1.45 |
/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
592 |
root |
1.78 |
#define ev_init(ev,cb_) do { \ |
593 |
root |
1.117 |
((ev_watcher *)(void *)(ev))->active = \ |
594 |
|
|
((ev_watcher *)(void *)(ev))->pending = 0; \ |
595 |
|
|
ev_set_priority ((ev), 0); \ |
596 |
root |
1.78 |
ev_set_cb ((ev), cb_); \ |
597 |
root |
1.32 |
} while (0) |
598 |
root |
1.3 |
|
599 |
root |
1.111 |
#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) |
600 |
root |
1.110 |
#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
601 |
|
|
#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0) |
602 |
|
|
#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
603 |
|
|
#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
604 |
|
|
#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
605 |
|
|
#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
606 |
|
|
#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
607 |
|
|
#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
608 |
|
|
#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
609 |
|
|
#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
610 |
|
|
#define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
611 |
|
|
|
612 |
|
|
#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
613 |
|
|
#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
614 |
|
|
#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) |
615 |
|
|
#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
616 |
|
|
#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
617 |
|
|
#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
618 |
|
|
#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
619 |
|
|
#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
620 |
|
|
#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
621 |
|
|
#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
622 |
|
|
#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
623 |
|
|
#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
624 |
|
|
|
625 |
|
|
#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
626 |
|
|
#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
627 |
|
|
|
628 |
|
|
#define ev_cb(ev) (ev)->cb /* rw */ |
629 |
root |
1.117 |
|
630 |
|
|
#if EV_MINPRI == EV_MAXPRI |
631 |
|
|
# define ev_priority(ev) ((ev), EV_MINPRI) |
632 |
|
|
# define ev_set_priority(ev,pri) ((ev), (pri)) |
633 |
|
|
#else |
634 |
root |
1.128 |
# define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority)) |
635 |
root |
1.131 |
# define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) |
636 |
root |
1.117 |
#endif |
637 |
root |
1.45 |
|
638 |
root |
1.128 |
#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) |
639 |
root |
1.100 |
|
640 |
root |
1.45 |
#ifndef ev_set_cb |
641 |
root |
1.110 |
# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
642 |
root |
1.45 |
#endif |
643 |
root |
1.1 |
|
644 |
root |
1.5 |
/* stopping (enabling, adding) a watcher does nothing if it is already running */ |
645 |
|
|
/* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
646 |
root |
1.9 |
#if EV_PROTOTYPES |
647 |
root |
1.41 |
|
648 |
|
|
/* feeds an event into a watcher as if the event actually occured */ |
649 |
|
|
/* accepts any ev_watcher type */ |
650 |
|
|
void ev_feed_event (EV_P_ void *w, int revents); |
651 |
root |
1.42 |
void ev_feed_fd_event (EV_P_ int fd, int revents); |
652 |
root |
1.132 |
#if EV_SIGNAL_ENABLE |
653 |
root |
1.42 |
void ev_feed_signal_event (EV_P_ int signum); |
654 |
root |
1.132 |
#endif |
655 |
root |
1.81 |
void ev_invoke (EV_P_ void *w, int revents); |
656 |
root |
1.80 |
int ev_clear_pending (EV_P_ void *w); |
657 |
root |
1.41 |
|
658 |
root |
1.66 |
void ev_io_start (EV_P_ ev_io *w); |
659 |
|
|
void ev_io_stop (EV_P_ ev_io *w); |
660 |
root |
1.6 |
|
661 |
root |
1.66 |
void ev_timer_start (EV_P_ ev_timer *w); |
662 |
|
|
void ev_timer_stop (EV_P_ ev_timer *w); |
663 |
root |
1.30 |
/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
664 |
root |
1.66 |
void ev_timer_again (EV_P_ ev_timer *w); |
665 |
root |
1.123 |
/* return remaining time */ |
666 |
|
|
ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w); |
667 |
root |
1.1 |
|
668 |
root |
1.69 |
#if EV_PERIODIC_ENABLE |
669 |
root |
1.66 |
void ev_periodic_start (EV_P_ ev_periodic *w); |
670 |
|
|
void ev_periodic_stop (EV_P_ ev_periodic *w); |
671 |
|
|
void ev_periodic_again (EV_P_ ev_periodic *w); |
672 |
root |
1.50 |
#endif |
673 |
root |
1.1 |
|
674 |
root |
1.70 |
/* only supported in the default loop */ |
675 |
root |
1.132 |
#if EV_SIGNAL_ENABLE |
676 |
root |
1.70 |
void ev_signal_start (EV_P_ ev_signal *w); |
677 |
|
|
void ev_signal_stop (EV_P_ ev_signal *w); |
678 |
root |
1.132 |
#endif |
679 |
root |
1.70 |
|
680 |
|
|
/* only supported in the default loop */ |
681 |
root |
1.132 |
# if EV_CHILD_ENABLE |
682 |
root |
1.70 |
void ev_child_start (EV_P_ ev_child *w); |
683 |
|
|
void ev_child_stop (EV_P_ ev_child *w); |
684 |
root |
1.132 |
# endif |
685 |
root |
1.70 |
|
686 |
|
|
# if EV_STAT_ENABLE |
687 |
|
|
void ev_stat_start (EV_P_ ev_stat *w); |
688 |
|
|
void ev_stat_stop (EV_P_ ev_stat *w); |
689 |
|
|
void ev_stat_stat (EV_P_ ev_stat *w); |
690 |
|
|
# endif |
691 |
|
|
|
692 |
root |
1.78 |
# if EV_IDLE_ENABLE |
693 |
root |
1.66 |
void ev_idle_start (EV_P_ ev_idle *w); |
694 |
|
|
void ev_idle_stop (EV_P_ ev_idle *w); |
695 |
root |
1.78 |
# endif |
696 |
root |
1.5 |
|
697 |
root |
1.66 |
void ev_prepare_start (EV_P_ ev_prepare *w); |
698 |
|
|
void ev_prepare_stop (EV_P_ ev_prepare *w); |
699 |
root |
1.11 |
|
700 |
root |
1.66 |
void ev_check_start (EV_P_ ev_check *w); |
701 |
|
|
void ev_check_stop (EV_P_ ev_check *w); |
702 |
root |
1.12 |
|
703 |
root |
1.72 |
# if EV_FORK_ENABLE |
704 |
|
|
void ev_fork_start (EV_P_ ev_fork *w); |
705 |
|
|
void ev_fork_stop (EV_P_ ev_fork *w); |
706 |
|
|
# endif |
707 |
|
|
|
708 |
root |
1.69 |
# if EV_EMBED_ENABLE |
709 |
root |
1.64 |
/* only supported when loop to be embedded is in fact embeddable */ |
710 |
root |
1.66 |
void ev_embed_start (EV_P_ ev_embed *w); |
711 |
|
|
void ev_embed_stop (EV_P_ ev_embed *w); |
712 |
root |
1.68 |
void ev_embed_sweep (EV_P_ ev_embed *w); |
713 |
root |
1.64 |
# endif |
714 |
|
|
|
715 |
root |
1.92 |
# if EV_ASYNC_ENABLE |
716 |
|
|
void ev_async_start (EV_P_ ev_async *w); |
717 |
|
|
void ev_async_stop (EV_P_ ev_async *w); |
718 |
|
|
void ev_async_send (EV_P_ ev_async *w); |
719 |
|
|
# endif |
720 |
|
|
|
721 |
root |
1.9 |
#endif |
722 |
root |
1.5 |
|
723 |
root |
1.19 |
#ifdef __cplusplus |
724 |
|
|
} |
725 |
|
|
#endif |
726 |
|
|
|
727 |
root |
1.1 |
#endif |
728 |
|
|
|