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Add exceptions support to C++ interface.

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Add exception specification and a ev::bad_loop exception that is thrown
when a loop can't be initialized.
master
llucax 15 years ago
parent a836b93fee
commit 0f140ad22b
1 changed files with 111 additions and 78 deletions
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189
ev++.h
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@ -46,6 +46,18 @@
# include "ev.h"
#endif
#ifndef EV_CXX_EXCEPTIONS
#define EV_CXX_EXCEPTIONS 1
#endif
#undef EV_THROW
#if EV_CXX_EXCEPTIONS
# include <stdexcept>
# define EV_THROW(exception) throw (exception)
#else
# define EV_THROW(exception)
#endif
namespace ev {
typedef ev_tstamp tstamp;
@ -93,6 +105,14 @@ namespace ev {
ALL = EVUNLOOP_ALL
};
#if EV_CXX_EXCEPTIONS
struct bad_loop: std::runtime_error
{
bad_loop()
: std::runtime_error("loop can't be initialized") {}
};
#endif
#ifdef EV_AX
# undef EV_AX
#endif
@ -114,12 +134,16 @@ namespace ev {
loop_ref (EV_P)
#if EV_MULTIPLICITY
: EV_AX (EV_A)
EV_THROW (bad_loop) : EV_AX (EV_A)
#endif
{
#if EV_MULTIPLICIY && EV_CXX_EXCEPTIONS
if (!EV_A)
throw bad_loop ();
#endif
}
bool operator== (const loop_ref &other) const
bool operator== (const loop_ref &other) const EV_THROW ()
{
#if EV_MULTIPLICITY
return this->EV_AX == other.EV_AX;
@ -128,7 +152,7 @@ namespace ev {
#endif
}
bool operator!= (const loop_ref &other) const
bool operator!= (const loop_ref &other) const EV_THROW ()
{
#if EV_MULTIPLICITY
return ! (*this == other);
@ -138,37 +162,37 @@ namespace ev {
}
#if EV_MULTIPLICITY
bool operator== (struct ev_loop *other) const
bool operator== (struct ev_loop *other) const EV_THROW ()
{
return this->EV_AX == other;
}
bool operator!= (struct ev_loop *other) const
bool operator!= (struct ev_loop *other) const EV_THROW ()
{
return ! (*this == other);
}
bool operator== (const struct ev_loop *other) const
bool operator== (const struct ev_loop *other) const EV_THROW ()
{
return this->EV_AX == other;
}
bool operator!= (const struct ev_loop *other) const
bool operator!= (const struct ev_loop *other) const EV_THROW ()
{
return (*this == other);
}
operator struct ev_loop * () const
operator struct ev_loop * () const EV_THROW ()
{
return EV_AX;
}
operator const struct ev_loop * () const
operator const struct ev_loop * () const EV_THROW ()
{
return EV_AX;
}
bool is_default () const
bool is_default () const EV_THROW ()
{
return EV_AX == ev_default_loop (0);
}
@ -179,12 +203,12 @@ namespace ev {
ev_loop (EV_AX_ flags);
}
void unloop (how_t how = ONE)
void unloop (how_t how = ONE) EV_THROW ()
{
ev_unloop (EV_AX_ how);
}
void post_fork ()
void post_fork () EV_THROW ()
{
#if EV_MULTIPLICITY
ev_loop_fork (EV_AX);
@ -193,50 +217,50 @@ namespace ev {
#endif
}
unsigned int count () const
unsigned int count () const EV_THROW ()
{
return ev_loop_count (EV_AX);
}
unsigned int backend () const
unsigned int backend () const EV_THROW ()
{
return ev_backend (EV_AX);
}
tstamp now () const
tstamp now () const EV_THROW ()
{
return ev_now (EV_AX);
}
void ref ()
void ref () EV_THROW ()
{
ev_ref (EV_AX);
}
void unref ()
void unref () EV_THROW ()
{
ev_unref (EV_AX);
}
void set_io_collect_interval (tstamp interval)
void set_io_collect_interval (tstamp interval) EV_THROW ()
{
ev_set_io_collect_interval (EV_AX_ interval);
}
void set_timeout_collect_interval (tstamp interval)
void set_timeout_collect_interval (tstamp interval) EV_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)
void once (int fd, int events, tstamp timeout, void (*cb)(int, void *), void* arg = 0) EV_THROW ()
{
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)
void once (int fd, int events, tstamp timeout, K *object) EV_THROW ()
{
once (fd, events, timeout, method_thunk<K, method>, object);
}
@ -250,7 +274,7 @@ namespace ev {
// const method callback
template<class K, void (K::*method)(int) const>
void once (int fd, int events, tstamp timeout, const K *object)
void once (int fd, int events, tstamp timeout, const K *object) EV_THROW ()
{
once (fd, events, timeout, const_method_thunk<K, method>, object);
}
@ -264,7 +288,7 @@ namespace ev {
// simple method callback
template<class K, void (K::*method)()>
void once (int fd, int events, tstamp timeout, K *object)
void once (int fd, int events, tstamp timeout, K *object) EV_THROW ()
{
once (fd, events, timeout, method_noargs_thunk<K, method>, object);
}
@ -278,7 +302,7 @@ namespace ev {
// simpler function callback
template<void (*cb)(int)>
void once (int fd, int events, tstamp timeout)
void once (int fd, int events, tstamp timeout) EV_THROW ()
{
once (fd, events, timeout, simpler_func_thunk<cb>);
}
@ -291,7 +315,7 @@ namespace ev {
// simplest function callback
template<void (*cb)()>
void once (int fd, int events, tstamp timeout)
void once (int fd, int events, tstamp timeout) EV_THROW ()
{
once (fd, events, timeout, simplest_func_thunk<cb>);
}
@ -302,12 +326,12 @@ namespace ev {
(*cb) ();
}
void feed_fd_event (int fd, int revents)
void feed_fd_event (int fd, int revents) EV_THROW ()
{
ev_feed_fd_event (EV_AX_ fd, revents);
}
void feed_signal_event (int signum)
void feed_signal_event (int signum) EV_THROW ()
{
ev_feed_signal_event (EV_AX_ signum);
}
@ -322,12 +346,12 @@ namespace ev {
struct dynamic_loop: loop_ref
{
dynamic_loop (unsigned int flags = AUTO)
dynamic_loop (unsigned int flags = AUTO) EV_THROW (bad_loop)
: loop_ref (ev_loop_new (flags))
{
}
~dynamic_loop ()
~dynamic_loop () EV_THROW ()
{
ev_loop_destroy (EV_AX);
EV_AX = 0;
@ -345,18 +369,25 @@ namespace ev {
struct default_loop: loop_ref
{
default_loop (unsigned int flags = AUTO)
default_loop (unsigned int flags = AUTO) EV_THROW (bad_loop)
#if EV_MULTIPLICITY
: loop_ref (ev_default_loop (flags))
{
}
#else
{
ev_default_loop (flags);
#if EV_CXX_EXCEPTIONS
int r =
#endif
ev_default_loop (flags);
#if EV_CXX_EXCEPTIONS
if (!r)
throw bad_loop ();
#endif
}
#endif
~default_loop ()
~default_loop () EV_THROW ()
{
ev_default_destroy ();
#if EV_MULTIPLICITY
@ -372,7 +403,7 @@ namespace ev {
};
inline loop_ref get_default_loop ()
inline loop_ref get_default_loop () EV_THROW ()
{
#if EV_MULTIPLICITY
return ev_default_loop (0);
@ -400,13 +431,13 @@ namespace ev {
#if EV_MULTIPLICITY
EV_PX;
void set (EV_PX)
void set (EV_PX) EV_THROW ()
{
this->EV_A = EV_A;
}
#endif
base (EV_PX)
base (EV_PX) EV_THROW ()
#if EV_MULTIPLICITY
: EV_A (EV_A)
#endif
@ -414,7 +445,7 @@ namespace ev {
ev_init (this, 0);
}
void set_ (void *data, void (*cb)(EV_P_ ev_watcher *w, int revents))
void set_ (void *data, void (*cb)(EV_P_ ev_watcher *w, int revents)) EV_THROW ()
{
this->data = data;
ev_set_cb (static_cast<ev_watcher *>(this), cb);
@ -422,7 +453,7 @@ namespace ev {
// method callback
template<class K, void (K::*method)(watcher &w, int)>
void set (K *object)
void set (K *object) EV_THROW ()
{
set_ (object, method_thunk<K, method>);
}
@ -436,7 +467,7 @@ namespace ev {
// const method callback
template<class K, void (K::*method)(watcher &w, int) const>
void set (const K *object)
void set (const K *object) EV_THROW ()
{
set_ (object, const_method_thunk<K, method>);
}
@ -450,7 +481,7 @@ namespace ev {
// function callback
template<void (*function)(watcher &w, int)>
void set (void *data = 0)
void set (void *data = 0) EV_THROW ()
{
set_ (data, function_thunk<function>);
}
@ -463,7 +494,7 @@ namespace ev {
// simple callback
template<class K, void (K::*method)()>
void set (K *object)
void set (K *object) EV_THROW ()
{
set_ (object, method_noargs_thunk<K, method>);
}
@ -481,76 +512,76 @@ namespace ev {
(static_cast<ev_watcher *>(this), events);
}
bool is_active () const
bool is_active () const EV_THROW ()
{
return ev_is_active (static_cast<const ev_watcher *>(this));
}
bool is_pending () const
bool is_pending () const EV_THROW ()
{
return ev_is_pending (static_cast<const ev_watcher *>(this));
}
void feed_event (int revents)
void feed_event (int revents) EV_THROW ()
{
ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
}
};
inline tstamp now ()
inline tstamp now () EV_THROW ()
{
return ev_time ();
}
inline void delay (tstamp interval)
inline void delay (tstamp interval) EV_THROW ()
{
ev_sleep (interval);
}
inline int version_major ()
inline int version_major () EV_THROW ()
{
return ev_version_major ();
}
inline int version_minor ()
inline int version_minor () EV_THROW ()
{
return ev_version_minor ();
}
inline unsigned int supported_backends ()
inline unsigned int supported_backends () EV_THROW ()
{
return ev_supported_backends ();
}
inline unsigned int recommended_backends ()
inline unsigned int recommended_backends () EV_THROW ()
{
return ev_recommended_backends ();
}
inline unsigned int embeddable_backends ()
inline unsigned int embeddable_backends () EV_THROW ()
{
return ev_embeddable_backends ();
}
inline void set_allocator (void *(*cb)(void *ptr, long size))
inline void set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW ()
{
ev_set_allocator (cb);
}
inline void set_syserr_cb (void (*cb)(const char *msg))
inline void set_syserr_cb (void (*cb)(const char *msg)) EV_THROW ()
{
ev_set_syserr_cb (cb);
}
#if EV_MULTIPLICITY
#define EV_CONSTRUCT(cppstem,cstem) \
(EV_PX = get_default_loop ()) \
(EV_PX = get_default_loop ()) EV_THROW () \
: base<ev_ ## cstem, cppstem> (EV_A) \
{ \
}
#else
#define EV_CONSTRUCT(cppstem,cstem) \
() \
() EV_THROW () \
{ \
}
#endif
@ -561,19 +592,19 @@ namespace ev {
\
struct cppstem : base<ev_ ## cstem, cppstem> \
{ \
void start () \
void start () EV_THROW () \
{ \
ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
} \
\
void stop () \
void stop () EV_THROW () \
{ \
ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
} \
\
cppstem EV_CONSTRUCT(cppstem,cstem) \
\
~cppstem () \
~cppstem () EV_THROW () \
{ \
stop (); \
} \
@ -592,7 +623,7 @@ namespace ev {
};
EV_BEGIN_WATCHER (io, io)
void set (int fd, int events)
void set (int fd, int events) EV_THROW ()
{
int active = is_active ();
if (active) stop ();
@ -600,7 +631,7 @@ namespace ev {
if (active) start ();
}
void set (int events)
void set (int events) EV_THROW ()
{
int active = is_active ();
if (active) stop ();
@ -608,7 +639,7 @@ namespace ev {
if (active) start ();
}
void start (int fd, int events)
void start (int fd, int events) EV_THROW ()
{
set (fd, events);
start ();
@ -616,7 +647,7 @@ namespace ev {
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.) EV_THROW ()
{
int active = is_active ();
if (active) stop ();
@ -624,13 +655,13 @@ namespace ev {
if (active) start ();
}
void start (ev_tstamp after, ev_tstamp repeat = 0.)
void start (ev_tstamp after, ev_tstamp repeat = 0.) EV_THROW ()
{
set (after, repeat);
start ();
}
void again ()
void again () EV_THROW ()
{
ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
}
@ -638,7 +669,7 @@ namespace ev {
#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.) EV_THROW ()
{
int active = is_active ();
if (active) stop ();
@ -646,13 +677,13 @@ namespace ev {
if (active) start ();
}
void start (ev_tstamp at, ev_tstamp interval = 0.)
void start (ev_tstamp at, ev_tstamp interval = 0.) EV_THROW ()
{
set (at, interval);
start ();
}
void again ()
void again () EV_THROW ()
{
ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
}
@ -660,7 +691,7 @@ namespace ev {
#endif
EV_BEGIN_WATCHER (sig, signal)
void set (int signum)
void set (int signum) EV_THROW ()
{
int active = is_active ();
if (active) stop ();
@ -668,7 +699,7 @@ namespace ev {
if (active) start ();
}
void start (int signum)
void start (int signum) EV_THROW ()
{
set (signum);
start ();
@ -676,7 +707,7 @@ namespace ev {
EV_END_WATCHER (sig, signal)
EV_BEGIN_WATCHER (child, child)
void set (int pid)
void set (int pid) EV_THROW ()
{
int active = is_active ();
if (active) stop ();
@ -684,7 +715,7 @@ namespace ev {
if (active) start ();
}
void start (int pid)
void start (int pid) EV_THROW ()
{
set (pid);
start ();
@ -693,7 +724,7 @@ namespace ev {
#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.) EV_THROW ()
{
int active = is_active ();
if (active) stop ();
@ -701,14 +732,14 @@ namespace ev {
if (active) start ();
}
void start (const char *path, ev_tstamp interval = 0.)
void start (const char *path, ev_tstamp interval = 0.) EV_THROW ()
{
stop ();
set (path, interval);
start ();
}
void update ()
void update () EV_THROW ()
{
ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
}
@ -716,20 +747,20 @@ namespace ev {
#endif
EV_BEGIN_WATCHER (idle, idle)
void set () { }
void set () EV_THROW () { }
EV_END_WATCHER (idle, idle)
EV_BEGIN_WATCHER (prepare, prepare)
void set () { }
void set () EV_THROW () { }
EV_END_WATCHER (prepare, prepare)
EV_BEGIN_WATCHER (check, check)
void set () { }
void set () EV_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) EV_THROW ()
{
stop ();
ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
@ -745,7 +776,7 @@ namespace ev {
#if EV_FORK_ENABLE
EV_BEGIN_WATCHER (fork, fork)
void set () { }
void set () EV_THROW () { }
EV_END_WATCHER (fork, fork)
#endif
@ -757,5 +788,7 @@ namespace ev {
}
#undef EV_THROW
#endif

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