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1.21 |
/* |
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* libev simple C++ wrapper classes |
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* |
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* Copyright (c) 2007 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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root |
1.1 |
#ifndef EVPP_H__ |
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#define EVPP_H__ |
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root |
1.20 |
#ifdef EV_H |
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# include EV_H |
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#else |
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root |
1.22 |
# include "ev.h" |
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root |
1.20 |
#endif |
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root |
1.1 |
|
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namespace ev { |
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llucax |
1.24 |
typedef ev_tstamp tstamp; |
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enum { |
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UNDEF = EV_UNDEF, |
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NONE = EV_NONE, |
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READ = EV_READ, |
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WRITE = EV_WRITE, |
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TIMEOUT = EV_TIMEOUT, |
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PERIODIC = EV_PERIODIC, |
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SIGNAL = EV_SIGNAL, |
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CHILD = EV_CHILD, |
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STAT = EV_STAT, |
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IDLE = EV_IDLE, |
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CHECK = EV_CHECK, |
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PREPARE = EV_PREPARE, |
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FORK = EV_FORK, |
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EMBED = EV_EMBED, |
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ERROR = EV_ERROR, |
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}; |
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llucax |
1.25 |
enum |
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{ |
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AUTO = EVFLAG_AUTO, |
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NOENV = EVFLAG_NOENV, |
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FORKCHECK = EVFLAG_FORKCHECK, |
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SELECT = EVBACKEND_SELECT, |
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POLL = EVBACKEND_POLL, |
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EPOLL = EVBACKEND_EPOLL, |
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KQUEUE = EVBACKEND_KQUEUE, |
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DEVPOLL = EVBACKEND_DEVPOLL, |
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PORT = EVBACKEND_PORT |
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}; |
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enum |
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{ |
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NONBLOCK = EVLOOP_NONBLOCK, |
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ONESHOT = EVLOOP_ONESHOT |
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}; |
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enum how_t |
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{ |
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ONE = EVUNLOOP_ONE, |
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ALL = EVUNLOOP_ALL |
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}; |
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1.13 |
template<class ev_watcher, class watcher> |
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struct base : ev_watcher |
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1.1 |
{ |
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1.13 |
#if EV_MULTIPLICITY |
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EV_P; |
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1.1 |
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1.13 |
void set (EV_P) |
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{ |
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this->EV_A = EV_A; |
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} |
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#endif |
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1.1 |
|
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1.13 |
base () |
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{ |
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ev_init (this, 0); |
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} |
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1.18 |
void set_ (void *data, void (*cb)(EV_P_ ev_watcher *w, int revents)) |
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1.13 |
{ |
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1.17 |
this->data = data; |
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1.18 |
ev_set_cb (static_cast<ev_watcher *>(this), cb); |
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1.13 |
} |
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root |
1.19 |
// method callback |
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1.13 |
template<class K, void (K::*method)(watcher &w, int)> |
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void set (K *object) |
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{ |
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set_ (object, method_thunk<K, method>); |
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} |
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template<class K, void (K::*method)(watcher &w, int)> |
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1.18 |
static void method_thunk (EV_P_ ev_watcher *w, int revents) |
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1.13 |
{ |
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1.17 |
K *obj = static_cast<K *>(w->data); |
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1.18 |
(obj->*method) (*static_cast<watcher *>(w), revents); |
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1.13 |
} |
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root |
1.19 |
// const method callback |
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1.13 |
template<class K, void (K::*method)(watcher &w, int) const> |
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void set (const K *object) |
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{ |
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set_ (object, const_method_thunk<K, method>); |
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} |
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template<class K, void (K::*method)(watcher &w, int) const> |
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1.18 |
static void const_method_thunk (EV_P_ ev_watcher *w, int revents) |
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{ |
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K *obj = static_cast<K *>(w->data); |
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(static_cast<K *>(w->data)->*method) (*static_cast<watcher *>(w), revents); |
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1.13 |
} |
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root |
1.19 |
// function callback |
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1.17 |
template<void (*function)(watcher &w, int)> |
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void set (void *data = 0) |
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1.13 |
{ |
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1.16 |
set_ (data, function_thunk<function>); |
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1.13 |
} |
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template<void (*function)(watcher &w, int)> |
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1.18 |
static void function_thunk (EV_P_ ev_watcher *w, int revents) |
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1.13 |
{ |
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1.18 |
function (*static_cast<watcher *>(w), revents); |
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1.13 |
} |
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root |
1.19 |
// simple callback |
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template<class K, void (K::*method)()> |
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void set (K *object) |
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{ |
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set_ (object, method_noargs_thunk<K, method>); |
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} |
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template<class K, void (K::*method)()> |
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static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents) |
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{ |
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K *obj = static_cast<K *>(w->data); |
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(obj->*method) (); |
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} |
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root |
1.13 |
void operator ()(int events = EV_UNDEF) |
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{ |
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1.14 |
return ev_cb (static_cast<ev_watcher *>(this)) |
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(static_cast<ev_watcher *>(this), events); |
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root |
1.13 |
} |
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bool is_active () const |
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1.1 |
{ |
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1.13 |
return ev_is_active (static_cast<const ev_watcher *>(this)); |
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root |
1.1 |
} |
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root |
1.13 |
bool is_pending () const |
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root |
1.1 |
{ |
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1.13 |
return ev_is_pending (static_cast<const ev_watcher *>(this)); |
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root |
1.1 |
} |
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}; |
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llucax |
1.26 |
inline void delay (tstamp interval) |
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{ |
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ev_sleep (interval); |
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} |
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inline int version_major () |
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{ |
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return ev_version_major (); |
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} |
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inline int version_minor () |
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{ |
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return ev_version_minor (); |
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} |
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inline unsigned int supported_backends () |
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{ |
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return ev_supported_backends (); |
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} |
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inline unsigned int recommended_backends () |
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{ |
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return ev_recommended_backends (); |
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} |
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inline unsigned int embeddable_backends () |
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{ |
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return ev_embeddable_backends (); |
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} |
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inline void set_allocator (void *(*cb)(void *ptr, long size)) |
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{ |
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ev_set_allocator (cb); |
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} |
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inline void set_syserr_cb (void (*cb)(const char *msg)) |
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{ |
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ev_set_syserr_cb (cb); |
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} |
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root |
1.1 |
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inline ev_tstamp now (EV_P) |
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{ |
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return ev_now (EV_A); |
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} |
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#if EV_MULTIPLICITY |
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root |
1.13 |
#define EV_CONSTRUCT \ |
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(EV_P = EV_DEFAULT) \ |
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root |
1.1 |
{ \ |
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root |
1.13 |
set (EV_A); \ |
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} |
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root |
1.1 |
#else |
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root |
1.13 |
#define EV_CONSTRUCT \ |
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() \ |
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{ \ |
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} |
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root |
1.1 |
#endif |
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/* using a template here would require quite a bit more lines, |
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* so a macro solution was chosen */ |
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root |
1.4 |
#define EV_BEGIN_WATCHER(cppstem,cstem) \ |
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root |
1.1 |
\ |
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root |
1.13 |
struct cppstem : base<ev_ ## cstem, cppstem> \ |
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root |
1.1 |
{ \ |
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void start () \ |
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{ \ |
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ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \ |
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} \ |
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\ |
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void stop () \ |
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{ \ |
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ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \ |
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} \ |
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\ |
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root |
1.13 |
cppstem EV_CONSTRUCT \ |
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root |
1.1 |
\ |
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root |
1.3 |
~cppstem () \ |
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{ \ |
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stop (); \ |
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} \ |
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\ |
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root |
1.13 |
using base<ev_ ## cstem, cppstem>::set; \ |
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\ |
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1.1 |
private: \ |
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\ |
277 |
llucax |
1.23 |
cppstem (const cppstem &o); \ |
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root |
1.6 |
\ |
279 |
llucax |
1.23 |
cppstem & operator =(const cppstem &o); \ |
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root |
1.1 |
\ |
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public: |
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283 |
root |
1.4 |
#define EV_END_WATCHER(cppstem,cstem) \ |
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root |
1.6 |
}; |
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root |
1.4 |
|
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EV_BEGIN_WATCHER (io, io) |
287 |
root |
1.1 |
void set (int fd, int events) |
288 |
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{ |
289 |
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int active = is_active (); |
290 |
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if (active) stop (); |
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ev_io_set (static_cast<ev_io *>(this), fd, events); |
292 |
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if (active) start (); |
293 |
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} |
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295 |
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void set (int events) |
296 |
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{ |
297 |
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int active = is_active (); |
298 |
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if (active) stop (); |
299 |
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ev_io_set (static_cast<ev_io *>(this), fd, events); |
300 |
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if (active) start (); |
301 |
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} |
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303 |
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void start (int fd, int events) |
304 |
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{ |
305 |
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set (fd, events); |
306 |
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start (); |
307 |
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} |
308 |
root |
1.4 |
EV_END_WATCHER (io, io) |
309 |
root |
1.1 |
|
310 |
root |
1.4 |
EV_BEGIN_WATCHER (timer, timer) |
311 |
root |
1.1 |
void set (ev_tstamp after, ev_tstamp repeat = 0.) |
312 |
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{ |
313 |
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int active = is_active (); |
314 |
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if (active) stop (); |
315 |
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ev_timer_set (static_cast<ev_timer *>(this), after, repeat); |
316 |
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if (active) start (); |
317 |
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} |
318 |
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319 |
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void start (ev_tstamp after, ev_tstamp repeat = 0.) |
320 |
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{ |
321 |
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set (after, repeat); |
322 |
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start (); |
323 |
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} |
324 |
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325 |
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void again () |
326 |
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{ |
327 |
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ev_timer_again (EV_A_ static_cast<ev_timer *>(this)); |
328 |
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} |
329 |
root |
1.4 |
EV_END_WATCHER (timer, timer) |
330 |
root |
1.1 |
|
331 |
root |
1.8 |
#if EV_PERIODIC_ENABLE |
332 |
root |
1.4 |
EV_BEGIN_WATCHER (periodic, periodic) |
333 |
root |
1.1 |
void set (ev_tstamp at, ev_tstamp interval = 0.) |
334 |
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{ |
335 |
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int active = is_active (); |
336 |
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if (active) stop (); |
337 |
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ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0); |
338 |
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if (active) start (); |
339 |
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} |
340 |
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341 |
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void start (ev_tstamp at, ev_tstamp interval = 0.) |
342 |
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{ |
343 |
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set (at, interval); |
344 |
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start (); |
345 |
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} |
346 |
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347 |
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void again () |
348 |
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{ |
349 |
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ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this)); |
350 |
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} |
351 |
root |
1.4 |
EV_END_WATCHER (periodic, periodic) |
352 |
root |
1.3 |
#endif |
353 |
root |
1.1 |
|
354 |
root |
1.4 |
EV_BEGIN_WATCHER (sig, signal) |
355 |
root |
1.1 |
void set (int signum) |
356 |
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{ |
357 |
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int active = is_active (); |
358 |
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if (active) stop (); |
359 |
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ev_signal_set (static_cast<ev_signal *>(this), signum); |
360 |
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if (active) start (); |
361 |
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} |
362 |
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363 |
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void start (int signum) |
364 |
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{ |
365 |
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set (signum); |
366 |
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start (); |
367 |
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} |
368 |
root |
1.4 |
EV_END_WATCHER (sig, signal) |
369 |
root |
1.1 |
|
370 |
root |
1.4 |
EV_BEGIN_WATCHER (child, child) |
371 |
root |
1.1 |
void set (int pid) |
372 |
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{ |
373 |
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int active = is_active (); |
374 |
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if (active) stop (); |
375 |
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ev_child_set (static_cast<ev_child *>(this), pid); |
376 |
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if (active) start (); |
377 |
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} |
378 |
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379 |
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void start (int pid) |
380 |
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{ |
381 |
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set (pid); |
382 |
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start (); |
383 |
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} |
384 |
root |
1.4 |
EV_END_WATCHER (child, child) |
385 |
root |
1.1 |
|
386 |
root |
1.8 |
#if EV_STAT_ENABLE |
387 |
|
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EV_BEGIN_WATCHER (stat, stat) |
388 |
|
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void set (const char *path, ev_tstamp interval = 0.) |
389 |
|
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{ |
390 |
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int active = is_active (); |
391 |
|
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if (active) stop (); |
392 |
|
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ev_stat_set (static_cast<ev_stat *>(this), path, interval); |
393 |
|
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if (active) start (); |
394 |
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} |
395 |
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396 |
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void start (const char *path, ev_tstamp interval = 0.) |
397 |
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{ |
398 |
root |
1.12 |
stop (); |
399 |
root |
1.8 |
set (path, interval); |
400 |
|
|
start (); |
401 |
|
|
} |
402 |
|
|
|
403 |
|
|
void update () |
404 |
|
|
{ |
405 |
|
|
ev_stat_stat (EV_A_ static_cast<ev_stat *>(this)); |
406 |
|
|
} |
407 |
|
|
EV_END_WATCHER (stat, stat) |
408 |
|
|
#endif |
409 |
|
|
|
410 |
|
|
EV_BEGIN_WATCHER (idle, idle) |
411 |
|
|
void set () { } |
412 |
|
|
EV_END_WATCHER (idle, idle) |
413 |
root |
1.7 |
|
414 |
root |
1.8 |
EV_BEGIN_WATCHER (prepare, prepare) |
415 |
|
|
void set () { } |
416 |
|
|
EV_END_WATCHER (prepare, prepare) |
417 |
|
|
|
418 |
|
|
EV_BEGIN_WATCHER (check, check) |
419 |
|
|
void set () { } |
420 |
|
|
EV_END_WATCHER (check, check) |
421 |
|
|
|
422 |
|
|
#if EV_EMBED_ENABLE |
423 |
root |
1.7 |
EV_BEGIN_WATCHER (embed, embed) |
424 |
|
|
void start (struct ev_loop *embedded_loop) |
425 |
|
|
{ |
426 |
root |
1.12 |
stop (); |
427 |
|
|
ev_embed_set (static_cast<ev_embed *>(this), embedded_loop); |
428 |
root |
1.7 |
start (); |
429 |
|
|
} |
430 |
|
|
|
431 |
|
|
void sweep () |
432 |
|
|
{ |
433 |
|
|
ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this)); |
434 |
|
|
} |
435 |
|
|
EV_END_WATCHER (embed, embed) |
436 |
|
|
#endif |
437 |
|
|
|
438 |
root |
1.10 |
#if EV_FORK_ENABLE |
439 |
|
|
EV_BEGIN_WATCHER (fork, fork) |
440 |
|
|
void set () { } |
441 |
|
|
EV_END_WATCHER (fork, fork) |
442 |
|
|
#endif |
443 |
|
|
|
444 |
root |
1.1 |
#undef EV_CONSTRUCT |
445 |
root |
1.4 |
#undef EV_BEGIN_WATCHER |
446 |
root |
1.7 |
#undef EV_END_WATCHER |
447 |
root |
1.1 |
} |
448 |
|
|
|
449 |
|
|
#endif |
450 |
|
|
|