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/* * libev native API header * * Copyright (c) 2007,2008,2009,2010,2011,2012,2015 Marc Alexander Lehmann <libev@schmorp.de> * All rights reserved. * * Redistribution and use in source and binary forms, with or without modifica- * tion, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, the contents of this file may be used under the terms of * the GNU General Public License ("GPL") version 2 or any later version, * in which case the provisions of the GPL are applicable instead of * the above. If you wish to allow the use of your version of this file * only under the terms of the GPL and not to allow others to use your * version of this file under the BSD license, indicate your decision * by deleting the provisions above and replace them with the notice * and other provisions required by the GPL. If you do not delete the * provisions above, a recipient may use your version of this file under * either the BSD or the GPL. */ #ifndef EV_H_ #define EV_H_ #ifdef __cplusplus # define EV_CPP(x) x # if __cplusplus >= 201103L # define EV_THROW noexcept # else # define EV_THROW throw () # endif #else # define EV_CPP(x) # define EV_THROW #endif EV_CPP(extern "C" {) /*****************************************************************************/ /* pre-4.0 compatibility */ #ifndef EV_COMPAT3 # define EV_COMPAT3 1 #endif #ifndef EV_FEATURES # if defined __OPTIMIZE_SIZE__ # define EV_FEATURES 0x7c # else # define EV_FEATURES 0x7f # endif #endif #define EV_FEATURE_CODE ((EV_FEATURES) & 1) #define EV_FEATURE_DATA ((EV_FEATURES) & 2) #define EV_FEATURE_CONFIG ((EV_FEATURES) & 4) #define EV_FEATURE_API ((EV_FEATURES) & 8) #define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16) #define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32) #define EV_FEATURE_OS ((EV_FEATURES) & 64) /* these priorities are inclusive, higher priorities will be invoked earlier */ #ifndef EV_MINPRI # define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0) #endif #ifndef EV_MAXPRI # define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0) #endif #ifndef EV_MULTIPLICITY # define EV_MULTIPLICITY EV_FEATURE_CONFIG #endif #ifndef EV_PERIODIC_ENABLE # define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_STAT_ENABLE # define EV_STAT_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_PREPARE_ENABLE # define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_CHECK_ENABLE # define EV_CHECK_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_IDLE_ENABLE # define EV_IDLE_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_FORK_ENABLE # define EV_FORK_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_CLEANUP_ENABLE # define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_SIGNAL_ENABLE # define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_CHILD_ENABLE # ifdef _WIN32 # define EV_CHILD_ENABLE 0 # else # define EV_CHILD_ENABLE EV_FEATURE_WATCHERS #endif #endif #ifndef EV_ASYNC_ENABLE # define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_EMBED_ENABLE # define EV_EMBED_ENABLE EV_FEATURE_WATCHERS #endif #ifndef EV_WALK_ENABLE # define EV_WALK_ENABLE 0 /* not yet */ #endif /*****************************************************************************/ #if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE # undef EV_SIGNAL_ENABLE # define EV_SIGNAL_ENABLE 1 #endif /*****************************************************************************/ typedef double ev_tstamp; #include <string.h> /* for memmove */ #ifndef EV_ATOMIC_T # include <signal.h> # define EV_ATOMIC_T sig_atomic_t volatile #endif #if EV_STAT_ENABLE # ifdef _WIN32 # include <time.h> # include <sys/types.h> # endif # include <sys/stat.h> #endif /* support multiple event loops? */ #if EV_MULTIPLICITY struct ev_loop; # define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */ # define EV_P_ EV_P, /* a loop as first of multiple parameters */ # define EV_A loop /* a loop as sole argument to a function call */ # define EV_A_ EV_A, /* a loop as first of multiple arguments */ # define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */ # define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */ # define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */ # define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */ #else # define EV_P void # define EV_P_ # define EV_A # define EV_A_ # define EV_DEFAULT # define EV_DEFAULT_ # define EV_DEFAULT_UC # define EV_DEFAULT_UC_ # undef EV_EMBED_ENABLE #endif /* EV_INLINE is used for functions in header files */ #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 # define EV_INLINE static inline #else # define EV_INLINE static #endif #ifdef EV_API_STATIC # define EV_API_DECL static #else # define EV_API_DECL extern #endif /* EV_PROTOTYPES can be used to switch of prototype declarations */ #ifndef EV_PROTOTYPES # define EV_PROTOTYPES 1 #endif /*****************************************************************************/ #define EV_VERSION_MAJOR 4 #define EV_VERSION_MINOR 22 /* eventmask, revents, events... */ enum { EV_UNDEF = (int)0xFFFFFFFF, /* guaranteed to be invalid */ EV_NONE = 0x00, /* no events */ EV_READ = 0x01, /* ev_io detected read will not block */ EV_WRITE = 0x02, /* ev_io detected write will not block */ EV__IOFDSET = 0x80, /* internal use only */ EV_IO = EV_READ, /* alias for type-detection */ EV_TIMER = 0x00000100, /* timer timed out */ #if EV_COMPAT3 EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */ #endif EV_PERIODIC = 0x00000200, /* periodic timer timed out */ EV_SIGNAL = 0x00000400, /* signal was received */ EV_CHILD = 0x00000800, /* child/pid had status change */ EV_STAT = 0x00001000, /* stat data changed */ EV_IDLE = 0x00002000, /* event loop is idling */ EV_PREPARE = 0x00004000, /* event loop about to poll */ EV_CHECK = 0x00008000, /* event loop finished poll */ EV_EMBED = 0x00010000, /* embedded event loop needs sweep */ EV_FORK = 0x00020000, /* event loop resumed in child */ EV_CLEANUP = 0x00040000, /* event loop resumed in child */ EV_ASYNC = 0x00080000, /* async intra-loop signal */ EV_CUSTOM = 0x01000000, /* for use by user code */ EV_ERROR = (int)0x80000000 /* sent when an error occurs */ }; /* can be used to add custom fields to all watchers, while losing binary compatibility */ #ifndef EV_COMMON # define EV_COMMON void *data; #endif #ifndef EV_CB_DECLARE # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct ty