855 lines
29 KiB
C
855 lines
29 KiB
C
/*
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* libev native API header
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*
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* Copyright (c) 2007,2008,2009,2010,2011,2012,2015 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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# define EV_CPP(x) x
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# if __cplusplus >= 201103L
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# define EV_THROW noexcept
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# else
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# define EV_THROW throw ()
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# endif
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#else
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# define EV_CPP(x)
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# define EV_THROW
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#endif
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EV_CPP(extern "C" {)
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/*****************************************************************************/
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/* pre-4.0 compatibility */
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#ifndef EV_COMPAT3
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# define EV_COMPAT3 1
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#endif
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#ifndef EV_FEATURES
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# if defined __OPTIMIZE_SIZE__
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# define EV_FEATURES 0x7c
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# else
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# define EV_FEATURES 0x7f
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# endif
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#endif
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#define EV_FEATURE_CODE ((EV_FEATURES) & 1)
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#define EV_FEATURE_DATA ((EV_FEATURES) & 2)
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#define EV_FEATURE_CONFIG ((EV_FEATURES) & 4)
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#define EV_FEATURE_API ((EV_FEATURES) & 8)
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#define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16)
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#define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32)
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#define EV_FEATURE_OS ((EV_FEATURES) & 64)
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/* these priorities are inclusive, higher priorities will be invoked earlier */
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#ifndef EV_MINPRI
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# define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0)
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#endif
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#ifndef EV_MAXPRI
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# define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0)
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#endif
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#ifndef EV_MULTIPLICITY
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# define EV_MULTIPLICITY EV_FEATURE_CONFIG
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#endif
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#ifndef EV_PERIODIC_ENABLE
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# define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS
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#endif
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#ifndef EV_STAT_ENABLE
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# define EV_STAT_ENABLE EV_FEATURE_WATCHERS
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#endif
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#ifndef EV_PREPARE_ENABLE
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# define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS
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#endif
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#ifndef EV_CHECK_ENABLE
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# define EV_CHECK_ENABLE EV_FEATURE_WATCHERS
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#endif
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#ifndef EV_IDLE_ENABLE
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# define EV_IDLE_ENABLE EV_FEATURE_WATCHERS
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#endif
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#ifndef EV_FORK_ENABLE
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# define EV_FORK_ENABLE EV_FEATURE_WATCHERS
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#endif
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#ifndef EV_CLEANUP_ENABLE
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# define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS
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#endif
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#ifndef EV_SIGNAL_ENABLE
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# define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS
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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 EV_FEATURE_WATCHERS
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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 EV_FEATURE_WATCHERS
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#endif
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#ifndef EV_EMBED_ENABLE
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# define EV_EMBED_ENABLE EV_FEATURE_WATCHERS
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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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/*****************************************************************************/
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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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/*****************************************************************************/
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typedef double ev_tstamp;
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#include <string.h> /* for memmove */
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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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#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 /* a loop as sole parameter in a declaration */
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# define EV_P_ EV_P, /* a loop as first of multiple parameters */
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# define EV_A loop /* a loop as sole argument to a function call */
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# define EV_A_ EV_A, /* a loop as first of multiple arguments */
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# define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */
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# define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */
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# define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */
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# define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */
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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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/* EV_INLINE is used for functions in header files */
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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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#ifdef EV_API_STATIC
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# define EV_API_DECL static
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#else
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# define EV_API_DECL extern
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#endif
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/* EV_PROTOTYPES can be used to switch of prototype declarations */
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#ifndef EV_PROTOTYPES
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# define EV_PROTOTYPES 1
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#endif
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/*****************************************************************************/
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#define EV_VERSION_MAJOR 4
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#define EV_VERSION_MINOR 22
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/* eventmask, revents, events... */
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enum {
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EV_UNDEF = (int)0xFFFFFFFF, /* guaranteed to be invalid */
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EV_NONE = 0x00, /* no events */
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EV_READ = 0x01, /* ev_io detected read will not block */
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EV_WRITE = 0x02, /* ev_io detected write will not block */
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EV__IOFDSET = 0x80, /* internal use only */
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EV_IO = EV_READ, /* alias for type-detection */
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EV_TIMER = 0x00000100, /* timer timed out */
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#if EV_COMPAT3
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EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */
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#endif
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EV_PERIODIC = 0x00000200, /* periodic timer timed out */
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EV_SIGNAL = 0x00000400, /* signal was received */
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EV_CHILD = 0x00000800, /* child/pid had status change */
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EV_STAT = 0x00001000, /* stat data changed */
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EV_IDLE = 0x00002000, /* event loop is idling */
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EV_PREPARE = 0x00004000, /* event loop about to poll */
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EV_CHECK = 0x00008000, /* event loop finished poll */
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EV_EMBED = 0x00010000, /* embedded event loop needs sweep */
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EV_FORK = 0x00020000, /* event loop resumed in child */
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EV_CLEANUP = 0x00040000, /* event loop resumed in child */
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EV_ASYNC = 0x00080000, /* async intra-loop signal */
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EV_CUSTOM = 0x01000000, /* for use by user code */
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EV_ERROR = (int)0x80000000 /* sent when an error occurs */
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};
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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_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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/* not official, do not use */
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#define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents)
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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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#elif !defined (EV_DECL_PRIORITY)
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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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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) EV_THROW; /* rw */
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} ev_periodic;
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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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int signum; /* ro */
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} ev_signal;
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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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# ifdef _WIN32
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typedef struct _stati64 ev_statdata;
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# else
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typedef struct stat ev_statdata;
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# endif
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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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EV_WATCHER_LIST (ev_stat)
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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 */
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int wd; /* wd for inotify, fd for kqueue */
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} ev_stat;
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#endif
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#if EV_IDLE_ENABLE
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/* invoked when the nothing else needs to be done, keeps the process from blocking */
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/* revent EV_IDLE */
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typedef struct ev_idle
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{
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EV_WATCHER (ev_idle)
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} ev_idle;
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#endif
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/* 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 */
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/* revent EV_PREPARE */
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typedef struct ev_prepare
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{
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EV_WATCHER (ev_prepare)
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} ev_prepare;
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/* invoked for each run of the mainloop, just after the blocking call */
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/* revent EV_CHECK */
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typedef struct ev_check
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{
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EV_WATCHER (ev_check)
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} ev_check;
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#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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/* revent EV_FORK */
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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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#if EV_CLEANUP_ENABLE
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/* is invoked just before the loop gets destroyed */
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/* revent EV_CLEANUP */
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typedef struct ev_cleanup
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{
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EV_WATCHER (ev_cleanup)
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} ev_cleanup;
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#endif
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#if EV_EMBED_ENABLE
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/* 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 */
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typedef struct ev_embed
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{
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EV_WATCHER (ev_embed)
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struct ev_loop *other; /* ro */
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ev_io io; /* private */
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ev_prepare prepare; /* private */
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ev_check check; /* unused */
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ev_timer timer; /* unused */
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ev_periodic periodic; /* unused */
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ev_idle idle; /* unused */
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ev_fork fork; /* private */
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#if EV_CLEANUP_ENABLE
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ev_cleanup cleanup; /* unused */
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#endif
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} ev_embed;
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#endif
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#if EV_ASYNC_ENABLE
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/* invoked when somebody calls ev_async_send on the watcher */
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/* revent EV_ASYNC */
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typedef struct ev_async
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{
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EV_WATCHER (ev_async)
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EV_ATOMIC_T sent; /* private */
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} ev_async;
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# define ev_async_pending(w) (+(w)->sent)
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#endif
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/* the presence of this union forces similar struct layout */
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union ev_any_watcher
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{
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struct ev_watcher w;
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struct ev_watcher_list wl;
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struct ev_io io;
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struct ev_timer timer;
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struct ev_periodic periodic;
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struct ev_signal signal;
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struct ev_child child;
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#if EV_STAT_ENABLE
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struct ev_stat stat;
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#endif
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#if EV_IDLE_ENABLE
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struct ev_idle idle;
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#endif
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struct ev_prepare prepare;
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struct ev_check check;
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#if EV_FORK_ENABLE
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struct ev_fork fork;
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#endif
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#if EV_CLEANUP_ENABLE
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struct ev_cleanup cleanup;
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#endif
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#if EV_EMBED_ENABLE
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struct ev_embed embed;
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#endif
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#if EV_ASYNC_ENABLE
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struct ev_async async;
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#endif
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};
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/* flag bits for ev_default_loop and ev_loop_new */
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enum {
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/* the default */
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EVFLAG_AUTO = 0x00000000U, /* not quite a mask */
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/* flag bits */
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EVFLAG_NOENV = 0x01000000U, /* do NOT consult environment */
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EVFLAG_FORKCHECK = 0x02000000U, /* check for a fork in each iteration */
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/* debugging/feature disable */
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EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */
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#if EV_COMPAT3
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EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */
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#endif
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EVFLAG_SIGNALFD = 0x00200000U, /* attempt to use signalfd */
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EVFLAG_NOSIGMASK = 0x00400000U /* avoid modifying the signal mask */
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};
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/* method bits to be ored together */
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enum {
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EVBACKEND_SELECT = 0x00000001U, /* about anywhere */
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EVBACKEND_POLL = 0x00000002U, /* !win */
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EVBACKEND_EPOLL = 0x00000004U, /* linux */
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EVBACKEND_KQUEUE = 0x00000008U, /* bsd */
|
|
EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */
|
|
EVBACKEND_PORT = 0x00000020U, /* solaris 10 */
|
|
EVBACKEND_ALL = 0x0000003FU, /* all known backends */
|
|
EVBACKEND_MASK = 0x0000FFFFU /* all future backends */
|
|
};
|
|
|
|
#if EV_PROTOTYPES
|
|
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_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_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.
|
|
* If it returns zero when memory needs to be allocated, the library might abort
|
|
* 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_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_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_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_THROW
|
|
{
|
|
extern struct ev_loop *ev_default_loop_ptr;
|
|
|
|
return ev_default_loop_ptr;
|
|
}
|
|
|
|
EV_INLINE int
|
|
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_THROW;
|
|
|
|
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)) EV_THROW; /* returns true when successful */
|
|
|
|
EV_API_DECL ev_tstamp ev_rt_now;
|
|
|
|
EV_INLINE ev_tstamp
|
|
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_THROW
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
#endif /* multiplicity */
|
|
|
|
/* destroy event loops, also works for the default loop */
|
|
EV_API_DECL void ev_loop_destroy (EV_P);
|
|
|
|
/* this needs to be called after fork, to duplicate the loop */
|
|
/* 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_THROW;
|
|
|
|
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) 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_THROW;
|
|
#endif
|
|
|
|
#endif /* prototypes */
|
|
|
|
/* ev_run flags values */
|
|
enum {
|
|
EVRUN_NOWAIT = 1, /* do not block/wait */
|
|
EVRUN_ONCE = 2 /* block *once* only */
|
|
};
|
|
|
|
/* ev_break how values */
|
|
enum {
|
|
EVBREAK_CANCEL = 0, /* undo unloop */
|
|
EVBREAK_ONE = 1, /* unloop once */
|
|
EVBREAK_ALL = 2 /* unloop all loops */
|
|
};
|
|
|
|
#if EV_PROTOTYPES
|
|
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_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_THROW;
|
|
|
|
# if EV_FEATURE_API
|
|
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) 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_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_THROW;
|
|
EV_API_DECL void ev_resume (EV_P) EV_THROW;
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/* these may evaluate ev multiple times, and the other arguments at most once */
|
|
/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
|
|
#define ev_init(ev,cb_) do { \
|
|
((ev_watcher *)(void *)(ev))->active = \
|
|
((ev_watcher *)(void *)(ev))->pending = 0; \
|
|
ev_set_priority ((ev), 0); \
|
|
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_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_cleanup_set(ev) /* nop, yes, this is a serious in-joke */
|
|
#define ev_async_set(ev) /* nop, yes, this is a serious in-joke */
|
|
|
|
#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_cleanup_init(ev,cb) do { ev_init ((ev), (cb)); ev_cleanup_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_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)
|
|
# define ev_set_priority(ev,pri) ((ev), (pri))
|
|
#else
|
|
# define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority))
|
|
# define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri)
|
|
#endif
|
|
|
|
#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at)
|
|
|
|
#ifndef ev_set_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 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_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_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_THROW;
|
|
|
|
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_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_THROW;
|
|
/* return remaining time */
|
|
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_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_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_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_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_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_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_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_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_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_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_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
|
|
#define EVLOOP_NONBLOCK EVRUN_NOWAIT
|
|
#define EVLOOP_ONESHOT EVRUN_ONCE
|
|
#define EVUNLOOP_CANCEL EVBREAK_CANCEL
|
|
#define EVUNLOOP_ONE EVBREAK_ONE
|
|
#define EVUNLOOP_ALL EVBREAK_ALL
|
|
#if EV_PROTOTYPES
|
|
EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); }
|
|
EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); }
|
|
EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); }
|
|
EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); }
|
|
#if EV_FEATURE_API
|
|
EV_INLINE unsigned int ev_loop_count (EV_P) { return ev_iteration (EV_A); }
|
|
EV_INLINE unsigned int ev_loop_depth (EV_P) { return ev_depth (EV_A); }
|
|
EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); }
|
|
#endif
|
|
#endif
|
|
#else
|
|
typedef struct ev_loop ev_loop;
|
|
#endif
|
|
|
|
#endif
|
|
|
|
EV_CPP(})
|
|
|
|
#endif
|
|
|