--- libev/ev++.h 2007/12/04 16:23:29 1.13 +++ libev/ev++.h 2008/01/22 17:56:29 1.33 @@ -1,124 +1,577 @@ +/* + * libev simple C++ wrapper classes + * + * Copyright (c) 2007 Marc Alexander Lehmann + * 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 EVPP_H__ #define EVPP_H__ -#include "ev.h" +#ifdef EV_H +# include EV_H +#else +# include "ev.h" +#endif + +#ifndef EV_USE_STDEXCEPT +# define EV_USE_STDEXCEPT 1 +#endif + +#if EV_USE_STDEXCEPT +# include +#endif namespace ev { + typedef ev_tstamp tstamp; + + enum { + UNDEF = EV_UNDEF, + NONE = EV_NONE, + READ = EV_READ, + WRITE = EV_WRITE, + TIMEOUT = EV_TIMEOUT, + PERIODIC = EV_PERIODIC, + SIGNAL = EV_SIGNAL, + CHILD = EV_CHILD, + STAT = EV_STAT, + IDLE = EV_IDLE, + CHECK = EV_CHECK, + PREPARE = EV_PREPARE, + FORK = EV_FORK, + EMBED = EV_EMBED, + ERROR = EV_ERROR, + }; + + enum + { + AUTO = EVFLAG_AUTO, + NOENV = EVFLAG_NOENV, + FORKCHECK = EVFLAG_FORKCHECK, + SELECT = EVBACKEND_SELECT, + POLL = EVBACKEND_POLL, + EPOLL = EVBACKEND_EPOLL, + KQUEUE = EVBACKEND_KQUEUE, + DEVPOLL = EVBACKEND_DEVPOLL, + PORT = EVBACKEND_PORT + }; + + enum + { + NONBLOCK = EVLOOP_NONBLOCK, + ONESHOT = EVLOOP_ONESHOT + }; + + enum how_t + { + ONE = EVUNLOOP_ONE, + ALL = EVUNLOOP_ALL + }; + + struct bad_loop +#if EV_USE_STDEXCEPT + : std::runtime_error +#endif + { +#if EV_USE_STDEXCEPT + bad_loop () + : std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?") + { + } +#endif + }; + +#ifdef EV_AX +# undef EV_AX +#endif + +#ifdef EV_AX_ +# undef EV_AX_ +#endif + +#if EV_MULTIPLICITY +# define EV_AX raw_loop +# define EV_AX_ raw_loop, +#else +# define EV_AX +# define EV_AX_ +#endif + + struct loop_ref + { + + loop_ref (EV_P) +#if EV_MULTIPLICITY + throw (bad_loop) : EV_AX (EV_A) + { + if (!EV_AX) + throw bad_loop (); + } +#else + throw () + { + } +#endif + + bool operator == (const loop_ref &other) const throw () + { +#if EV_MULTIPLICITY + return EV_AX == other.EV_AX; +#else + return true; +#endif + } + + bool operator != (const loop_ref &other) const throw () + { +#if EV_MULTIPLICITY + return ! (*this == other); +#else + return false; +#endif + } + +#if EV_MULTIPLICITY + bool operator== (struct ev_loop *other) const throw () + { + return this->EV_AX == other; + } + + bool operator!= (struct ev_loop *other) const throw () + { + return ! (*this == other); + } + + bool operator== (const struct ev_loop *other) const throw () + { + return this->EV_AX == other; + } + + bool operator!= (const struct ev_loop *other) const throw () + { + return (*this == other); + } + + operator struct ev_loop * () const throw () + { + return EV_AX; + } + + operator const struct ev_loop * () const throw () + { + return EV_AX; + } + + bool is_default () const throw () + { + return EV_AX == ev_default_loop (0); + } +#endif + + void loop (int flags = 0) + { + ev_loop (EV_AX_ flags); + } + + void unloop (how_t how = ONE) throw () + { + ev_unloop (EV_AX_ how); + } + + void post_fork () throw () + { +#if EV_MULTIPLICITY + ev_loop_fork (EV_AX); +#else + ev_default_fork (); +#endif + } + + unsigned int count () const throw () + { + return ev_loop_count (EV_AX); + } + + unsigned int backend () const throw () + { + return ev_backend (EV_AX); + } + + tstamp now () const throw () + { + return ev_now (EV_AX); + } + + void ref () throw () + { + ev_ref (EV_AX); + } + + void unref () throw () + { + ev_unref (EV_AX); + } + + void set_io_collect_interval (tstamp interval) throw () + { + ev_set_io_collect_interval (EV_AX_ interval); + } + + void set_timeout_collect_interval (tstamp interval) throw () + { + ev_set_timeout_collect_interval (EV_AX_ interval); + } + + // function callback + void once (int fd, int events, tstamp timeout, void (*cb)(int, void *), void* arg = 0) throw () + { + ev_once (EV_AX_ fd, events, timeout, cb, arg); + } + + // method callback + template + void once (int fd, int events, tstamp timeout, K *object) throw () + { + once (fd, events, timeout, method_thunk, object); + } + + template + static void method_thunk (int revents, void* arg) + { + K *obj = static_cast(arg); + (obj->*method) (revents); + } + + // const method callback + template + void once (int fd, int events, tstamp timeout, const K *object) throw () + { + once (fd, events, timeout, const_method_thunk, object); + } + + template + static void const_method_thunk (int revents, void* arg) + { + K *obj = static_cast(arg); + (obj->*method) (revents); + } + + // simple method callback + template + void once (int fd, int events, tstamp timeout, K *object) throw () + { + once (fd, events, timeout, method_noargs_thunk, object); + } + + template + static void method_noargs_thunk (int revents, void* arg) + { + K *obj = static_cast(arg); + (obj->*method) (); + } + + // simpler function callback + template + void once (int fd, int events, tstamp timeout) throw () + { + once (fd, events, timeout, simpler_func_thunk); + } + + template + static void simpler_func_thunk (int revents, void* arg) + { + (*cb) (revents); + } + + // simplest function callback + template + void once (int fd, int events, tstamp timeout) throw () + { + once (fd, events, timeout, simplest_func_thunk); + } + + template + static void simplest_func_thunk (int revents, void* arg) + { + (*cb) (); + } + + void feed_fd_event (int fd, int revents) throw () + { + ev_feed_fd_event (EV_AX_ fd, revents); + } + + void feed_signal_event (int signum) throw () + { + ev_feed_signal_event (EV_AX_ signum); + } + +#if EV_MULTIPLICITY + struct ev_loop* EV_AX; +#endif + + }; + +#if EV_MULTIPLICITY + struct dynamic_loop: loop_ref + { + + dynamic_loop (unsigned int flags = AUTO) EV_THROW (bad_loop) + : loop_ref (ev_loop_new (flags)) + { + } + + ~dynamic_loop () throw () + { + ev_loop_destroy (EV_AX); + EV_AX = 0; + } + + private: + + dynamic_loop (const dynamic_loop &); + + dynamic_loop & operator= (const dynamic_loop &); + + }; +#endif + + struct default_loop: loop_ref + { + + default_loop (unsigned int flags = AUTO) throw (bad_loop) +#if EV_MULTIPLICITY + : loop_ref (ev_default_loop (flags)) +#endif + { +#ifndef EV_MULTIPLICITY + if (!ev_default_loop (flags)) + throw bad_loop (); +#endif + } + + ~default_loop () throw () + { + ev_default_destroy (); + } + + private: + default_loop (const default_loop &); + default_loop &operator = (const default_loop &); + }; + + inline loop_ref get_default_loop () throw () + { +#if EV_MULTIPLICITY + return ev_default_loop (0); +#else + return loop_ref (); +#endif + } + +#undef EV_AX +#undef EV_AX_ + +#undef EV_PX +#undef EV_PX_ +#if EV_MULTIPLICITY +# define EV_PX loop_ref EV_A +# define EV_PX_ loop_ref EV_A_ +#else +# define EV_PX +# define EV_PX_ +#endif + template struct base : ev_watcher { #if EV_MULTIPLICITY - EV_P; + EV_PX; - void set (EV_P) + void set (EV_PX) throw () { this->EV_A = EV_A; } #endif - base () + base (EV_PX) throw () + #if EV_MULTIPLICITY + : EV_A (EV_A) + #endif { ev_init (this, 0); } - void set_ (void *object, void (*cb)(ev_watcher *w, int revents)) + void set_ (void *data, void (*cb)(EV_P_ ev_watcher *w, int revents)) throw () { - this->data = object; + this->data = data; ev_set_cb (static_cast(this), cb); } + // method callback template - void set (K *object) + void set (K *object) throw () { set_ (object, method_thunk); } template - static void method_thunk (ev_watcher *w, int revents) + static void method_thunk (EV_P_ ev_watcher *w, int revents) { - watcher *self = static_cast(w); - K *obj = static_cast(self->data); - (obj->*method) (*self, revents); + K *obj = static_cast(w->data); + (obj->*method) (*static_cast(w), revents); } + // const method callback template - void set (const K *object) + void set (const K *object) throw () { set_ (object, const_method_thunk); } template - static void const_method_thunk (ev_watcher *w, int revents) + static void const_method_thunk (EV_P_ ev_watcher *w, int revents) { - watcher *self = static_cast(w); - K *obj = static_cast(self->data); - (obj->*method) (*self, revents); + K *obj = static_cast(w->data); + (static_cast(w->data)->*method) (*static_cast(w), revents); } + // function callback template - void set () + void set (void *data = 0) throw () { - set_ (0, function_thunk); + set_ (data, function_thunk); } template - static void function_thunk (ev_watcher *w, int revents) + static void function_thunk (EV_P_ ev_watcher *w, int revents) + { + function (*static_cast(w), revents); + } + + // simple callback + template + void set (K *object) throw () + { + set_ (object, method_noargs_thunk); + } + + template + static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents) { - watcher *self = static_cast(w); - function (*self, revents); + K *obj = static_cast(w->data); + (obj->*method) (); } void operator ()(int events = EV_UNDEF) { - return e_cb (static_cast(this)) (events); + return ev_cb (static_cast(this)) + (static_cast(this), events); } - bool is_active () const + bool is_active () const throw () { return ev_is_active (static_cast(this)); } - bool is_pending () const + bool is_pending () const throw () { return ev_is_pending (static_cast(this)); } - }; - enum { - UNDEF = EV_UNDEF, - NONE = EV_NONE, - READ = EV_READ, - WRITE = EV_WRITE, - TIMEOUT = EV_TIMEOUT, - PERIODIC = EV_PERIODIC, - SIGNAL = EV_SIGNAL, - CHILD = EV_CHILD, - STAT = EV_STAT, - IDLE = EV_IDLE, - CHECK = EV_CHECK, - PREPARE = EV_PREPARE, - FORK = EV_FORK, - EMBED = EV_EMBED, - ERROR = EV_ERROR, + void feed_event (int revents) throw () + { + ev_feed_event (EV_A_ static_cast(this), revents); + } }; - typedef ev_tstamp tstamp; + inline tstamp now () throw () + { + return ev_time (); + } + + inline void delay (tstamp interval) throw () + { + ev_sleep (interval); + } + + inline int version_major () throw () + { + return ev_version_major (); + } + + inline int version_minor () throw () + { + return ev_version_minor (); + } + + inline unsigned int supported_backends () throw () + { + return ev_supported_backends (); + } - inline ev_tstamp now (EV_P) + inline unsigned int recommended_backends () throw () { - return ev_now (EV_A); + return ev_recommended_backends (); + } + + inline unsigned int embeddable_backends () throw () + { + return ev_embeddable_backends (); + } + + inline void set_allocator (void *(*cb)(void *ptr, long size)) throw () + { + ev_set_allocator (cb); + } + + inline void set_syserr_cb (void (*cb)(const char *msg)) throw () + { + ev_set_syserr_cb (cb); } #if EV_MULTIPLICITY - #define EV_CONSTRUCT \ - (EV_P = EV_DEFAULT) \ + #define EV_CONSTRUCT(cppstem,cstem) \ + (EV_PX = get_default_loop ()) throw () \ + : base (EV_A) \ { \ - set (EV_A); \ } #else - #define EV_CONSTRUCT \ - () \ + #define EV_CONSTRUCT(cppstem,cstem) \ + () throw () \ { \ } #endif @@ -129,19 +582,19 @@ \ struct cppstem : base \ { \ - void start () \ + void start () throw () \ { \ ev_ ## cstem ## _start (EV_A_ static_cast(this)); \ } \ \ - void stop () \ + void stop () throw () \ { \ ev_ ## cstem ## _stop (EV_A_ static_cast(this)); \ } \ \ - cppstem EV_CONSTRUCT \ + cppstem EV_CONSTRUCT(cppstem,cstem) \ \ - ~cppstem () \ + ~cppstem () throw () \ { \ stop (); \ } \ @@ -150,10 +603,9 @@ \ private: \ \ - cppstem (const cppstem &o) \ - { /* disabled */ } \ + cppstem (const cppstem &o); \ \ - void operator =(const cppstem &o) { /* disabled */ } \ + cppstem & operator =(const cppstem &o); \ \ public: @@ -161,7 +613,7 @@ }; EV_BEGIN_WATCHER (io, io) - void set (int fd, int events) + void set (int fd, int events) throw () { int active = is_active (); if (active) stop (); @@ -169,7 +621,7 @@ if (active) start (); } - void set (int events) + void set (int events) throw () { int active = is_active (); if (active) stop (); @@ -177,7 +629,7 @@ if (active) start (); } - void start (int fd, int events) + void start (int fd, int events) throw () { set (fd, events); start (); @@ -185,7 +637,7 @@ EV_END_WATCHER (io, io) EV_BEGIN_WATCHER (timer, timer) - void set (ev_tstamp after, ev_tstamp repeat = 0.) + void set (ev_tstamp after, ev_tstamp repeat = 0.) throw () { int active = is_active (); if (active) stop (); @@ -193,13 +645,13 @@ if (active) start (); } - void start (ev_tstamp after, ev_tstamp repeat = 0.) + void start (ev_tstamp after, ev_tstamp repeat = 0.) throw () { set (after, repeat); start (); } - void again () + void again () throw () { ev_timer_again (EV_A_ static_cast(this)); } @@ -207,7 +659,7 @@ #if EV_PERIODIC_ENABLE EV_BEGIN_WATCHER (periodic, periodic) - void set (ev_tstamp at, ev_tstamp interval = 0.) + void set (ev_tstamp at, ev_tstamp interval = 0.) throw () { int active = is_active (); if (active) stop (); @@ -215,13 +667,13 @@ if (active) start (); } - void start (ev_tstamp at, ev_tstamp interval = 0.) + void start (ev_tstamp at, ev_tstamp interval = 0.) throw () { set (at, interval); start (); } - void again () + void again () throw () { ev_periodic_again (EV_A_ static_cast(this)); } @@ -229,7 +681,7 @@ #endif EV_BEGIN_WATCHER (sig, signal) - void set (int signum) + void set (int signum) throw () { int active = is_active (); if (active) stop (); @@ -237,7 +689,7 @@ if (active) start (); } - void start (int signum) + void start (int signum) throw () { set (signum); start (); @@ -245,7 +697,7 @@ EV_END_WATCHER (sig, signal) EV_BEGIN_WATCHER (child, child) - void set (int pid) + void set (int pid) throw () { int active = is_active (); if (active) stop (); @@ -253,7 +705,7 @@ if (active) start (); } - void start (int pid) + void start (int pid) throw () { set (pid); start (); @@ -262,7 +714,7 @@ #if EV_STAT_ENABLE EV_BEGIN_WATCHER (stat, stat) - void set (const char *path, ev_tstamp interval = 0.) + void set (const char *path, ev_tstamp interval = 0.) throw () { int active = is_active (); if (active) stop (); @@ -270,14 +722,14 @@ if (active) start (); } - void start (const char *path, ev_tstamp interval = 0.) + void start (const char *path, ev_tstamp interval = 0.) throw () { stop (); set (path, interval); start (); } - void update () + void update () throw () { ev_stat_stat (EV_A_ static_cast(this)); } @@ -285,20 +737,20 @@ #endif EV_BEGIN_WATCHER (idle, idle) - void set () { } + void set () throw () { } EV_END_WATCHER (idle, idle) EV_BEGIN_WATCHER (prepare, prepare) - void set () { } + void set () throw () { } EV_END_WATCHER (prepare, prepare) EV_BEGIN_WATCHER (check, check) - void set () { } + void set () throw () { } EV_END_WATCHER (check, check) #if EV_EMBED_ENABLE EV_BEGIN_WATCHER (embed, embed) - void start (struct ev_loop *embedded_loop) + void start (struct ev_loop *embedded_loop) throw () { stop (); ev_embed_set (static_cast(this), embedded_loop); @@ -314,14 +766,19 @@ #if EV_FORK_ENABLE EV_BEGIN_WATCHER (fork, fork) - void set () { } + void set () throw () { } EV_END_WATCHER (fork, fork) #endif + #undef EV_PX + #undef EV_PX_ #undef EV_CONSTRUCT #undef EV_BEGIN_WATCHER #undef EV_END_WATCHER + } +#undef EV_THROW + #endif