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Add loop wrappers to C++ interface.

3 new classes are provided: loop_ref, dynamic_loop and default_loop.

loop_ref has value semantics and is just a pointer wrapper (but with
reference syntax). You can change a ev_loop* for a loop_ref and
vice-versa without notice. You can create (or asign) a loop_ref from
a ev_loop* and you can cast a loop_ref to a ev_loop*. You can check
for equality between loop_refs and ev_loop pointers. No clean-up is done
by a loop_ref.

dynamic_loop and default_loop have both reference semantics (they are
non-copiable and non-assignable), and provide automatic destruction.
master
llucax 14 years ago
parent
commit
8218239271
  1. 329
      ev++.h

329
ev++.h

@ -93,19 +93,323 @@ namespace ev {
ALL = EVUNLOOP_ALL
};
#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
: EV_AX (EV_A)
#endif
{
}
bool operator== (const loop_ref &other) const
{
#if EV_MULTIPLICITY
return this->EV_AX == other.EV_AX;
#else
return true;
#endif
}
bool operator!= (const loop_ref &other) const
{
#if EV_MULTIPLICITY
return ! (*this == other);
#else
return false;
#endif
}
#if EV_MULTIPLICITY
bool operator== (struct ev_loop *other) const
{
return this->EV_AX == other;
}
bool operator!= (struct ev_loop *other) const
{
return ! (*this == other);
}
bool operator== (const struct ev_loop *other) const
{
return this->EV_AX == other;
}
bool operator!= (const struct ev_loop *other) const
{
return (*this == other);
}
operator struct ev_loop * () const
{
return EV_AX;
}
operator const struct ev_loop * () const
{
return EV_AX;
}
bool is_default () const
{
return EV_AX == ev_default_loop (0);
}
#endif
void loop (int flags = 0)
{
ev_loop (EV_AX_ flags);
}
void unloop (how_t how = ONE)
{
ev_unloop (EV_AX_ how);
}
void post_fork ()
{
#if EV_MULTIPLICITY
ev_loop_fork (EV_AX);
#else
ev_default_fork ();
#endif
}
unsigned int count () const
{
return ev_loop_count (EV_AX);
}
unsigned int backend () const
{
return ev_backend (EV_AX);
}
tstamp now () const
{
return ev_now (EV_AX);
}
void ref ()
{
ev_ref (EV_AX);
}
void unref ()
{
ev_unref (EV_AX);
}
void set_io_collect_interval (tstamp interval)
{
ev_set_io_collect_interval (EV_AX_ interval);
}
void set_timeout_collect_interval (tstamp interval)
{
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)
{
ev_once (EV_AX_ fd, events, timeout, cb, arg);
}
// method callback
template<class K, void (K::*method)(int)>
void once (int fd, int events, tstamp timeout, K *object)
{
once (fd, events, timeout, method_thunk<K, method>, object);
}
template<class K, void (K::*method)(int)>
static void method_thunk (int revents, void* arg)
{
K *obj = static_cast<K *>(arg);
(obj->*method) (revents);
}
// const method callback
template<class K, void (K::*method)(int) const>
void once (int fd, int events, tstamp timeout, const K *object)
{
once (fd, events, timeout, const_method_thunk<K, method>, object);
}
template<class K, void (K::*method)(int) const>
static void const_method_thunk (int revents, void* arg)
{
K *obj = static_cast<K *>(arg);
(obj->*method) (revents);
}
// simple method callback
template<class K, void (K::*method)()>
void once (int fd, int events, tstamp timeout, K *object)
{
once (fd, events, timeout, method_noargs_thunk<K, method>, object);
}
template<class K, void (K::*method)()>
static void method_noargs_thunk (int revents, void* arg)
{
K *obj = static_cast<K *>(arg);
(obj->*method) ();
}
// simpler function callback
template<void (*cb)(int)>
void once (int fd, int events, tstamp timeout)
{
once (fd, events, timeout, simpler_func_thunk<cb>);
}
template<void (*cb)(int)>
static void simpler_func_thunk (int revents, void* arg)
{
(*cb) (revents);
}
// simplest function callback
template<void (*cb)()>
void once (int fd, int events, tstamp timeout)
{
once (fd, events, timeout, simplest_func_thunk<cb>);
}
template<void (*cb)()>
static void simplest_func_thunk (int revents, void* arg)
{
(*cb) ();
}
void feed_fd_event (int fd, int revents)
{
ev_feed_fd_event (EV_AX_ fd, revents);
}
void feed_signal_event (int signum)
{
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)
: loop_ref (ev_loop_new (flags))
{
}
~dynamic_loop ()
{
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)
#if EV_MULTIPLICITY
: loop_ref (ev_default_loop (flags))
{
}
#else
{
ev_default_loop (flags);
}
#endif
~default_loop ()
{
ev_default_destroy ();
#if EV_MULTIPLICITY
EV_AX = 0;
#endif
}
private:
default_loop (const default_loop &);
default_loop & operator= (const default_loop &);
};
inline loop_ref get_default_loop ()
{
#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<class ev_watcher, class watcher>
struct base : ev_watcher
{
#if EV_MULTIPLICITY
EV_P;
EV_PX;
void set (EV_P)
void set (EV_PX)
{
this->EV_A = EV_A;
}
#endif
base ()
base (EV_PX)
#if EV_MULTIPLICITY
: EV_A (EV_A)
#endif
{
ev_init (this, 0);
}
@ -233,20 +537,14 @@ namespace ev {
ev_set_syserr_cb (cb);
}
inline ev_tstamp now (EV_P)
{
return ev_now (EV_A);
}
#if EV_MULTIPLICITY
#define EV_CONSTRUCT \
(EV_P = EV_DEFAULT) \
#define EV_CONSTRUCT(cppstem,cstem) \
(EV_PX = get_default_loop ()) \
: base<ev_ ## cstem, cppstem> (EV_A) \
{ \
set (EV_A); \
}
#else
#define EV_CONSTRUCT \
#define EV_CONSTRUCT(cppstem,cstem) \
() \
{ \
}
@ -268,7 +566,7 @@ namespace ev {
ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
} \
\
cppstem EV_CONSTRUCT \
cppstem EV_CONSTRUCT(cppstem,cstem) \
\
~cppstem () \
{ \
@ -446,9 +744,12 @@ namespace ev {
EV_END_WATCHER (fork, fork)
#endif
#undef EV_PX
#undef EV_PX_
#undef EV_CONSTRUCT
#undef EV_BEGIN_WATCHER
#undef EV_END_WATCHER
}
#endif

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