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#ifndef EVPP_H__ |
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#define EVPP_H__ |
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|
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/* work in progress, don't use unless you know what you are doing */ |
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|
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namespace ev { |
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|
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template<class watcher> |
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class callback |
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{ |
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struct object { }; |
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|
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void *obj; |
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void (object::*meth)(watcher &, int); |
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|
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/* a proxy is a kind of recipe on how to call a specific class method */ |
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struct proxy_base { |
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virtual void call (void *obj, void (object::*meth)(watcher &, int), watcher &w, int) const = 0; |
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}; |
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template<class O1, class O2> |
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struct proxy : proxy_base { |
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virtual void call (void *obj, void (object::*meth)(watcher &, int), watcher &w, int e) const |
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{ |
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((reinterpret_cast<O1 *>(obj)) ->* (reinterpret_cast<void (O2::*)(watcher &, int)>(meth))) |
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(w, e); |
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} |
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}; |
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|
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proxy_base *prxy; |
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|
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public: |
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template<class O1, class O2> |
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explicit callback (O1 *object, void (O2::*method)(watcher &, int)) |
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{ |
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static proxy<O1,O2> p; |
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obj = reinterpret_cast<void *>(object); |
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meth = reinterpret_cast<void (object::*)(watcher &, int)>(method); |
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prxy = &p; |
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} |
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|
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void call (watcher *w, int e) const |
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{ |
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return prxy->call (obj, meth, *w, e); |
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} |
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}; |
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|
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#include "ev.h" |
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|
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typedef ev_tstamp tstamp; |
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|
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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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|
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#if EV_MULTIPLICITY |
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|
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#define EV_CONSTRUCT(cppstem) \ |
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EV_P; \ |
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\ |
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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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\ |
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template<class O1, class O2> \ |
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explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int), EV_P = ev_default_loop (0)) \ |
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: callback<cppstem> (object, method), EV_A (EV_A) |
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|
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#else |
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|
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#define EV_CONSTRUCT(cppstem) \ |
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template<class O1, class O2> \ |
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explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int)) \ |
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: callback<cppstem> (object, method) |
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|
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#endif |
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|
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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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#define EV_DECLARE_WATCHER(cppstem,cstem) \ |
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\ |
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extern "C" void cb_ ## cppstem (struct ev_ ## cstem *w, int revents); \ |
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\ |
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struct cppstem : ev_ ## cstem, callback<cppstem> \ |
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{ \ |
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EV_CONSTRUCT (cppstem) \ |
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{ \ |
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ev_init (static_cast<ev_ ## cstem *>(this), cb_ ## cppstem); \ |
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} \ |
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\ |
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bool is_active () const \ |
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{ \ |
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return ev_is_active (static_cast<const ev_ ## cstem *>(this)); \ |
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} \ |
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\ |
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bool is_pending () const \ |
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{ \ |
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return ev_is_pending (static_cast<const ev_ ## cstem *>(this)); \ |
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} \ |
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\ |
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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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void operator ()(int events = EV_UNDEF) \ |
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{ \ |
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return call (this, events); \ |
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} \ |
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\ |
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private: \ |
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\ |
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cppstem (const cppstem &o) \ |
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: callback<cppstem> (this, (void (cppstem::*)(cppstem &, int))0) \ |
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{ /* disabled */ } \ |
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void operator =(const cppstem &o) { /* disabled */ } \ |
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\ |
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public: |
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|
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EV_DECLARE_WATCHER (io, io) |
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void set (int fd, int events) |
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{ |
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int active = is_active (); |
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if (active) stop (); |
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ev_io_set (static_cast<ev_io *>(this), fd, events); |
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if (active) start (); |
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} |
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|
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void set (int events) |
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{ |
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int active = is_active (); |
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if (active) stop (); |
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ev_io_set (static_cast<ev_io *>(this), fd, events); |
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if (active) start (); |
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} |
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|
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void start (int fd, int events) |
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{ |
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set (fd, events); |
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start (); |
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} |
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}; |
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|
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EV_DECLARE_WATCHER (timer, timer) |
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void set (ev_tstamp after, ev_tstamp repeat = 0.) |
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{ |
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int active = is_active (); |
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if (active) stop (); |
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ev_timer_set (static_cast<ev_timer *>(this), after, repeat); |
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if (active) start (); |
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} |
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|
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void start (ev_tstamp after, ev_tstamp repeat = 0.) |
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{ |
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set (after, repeat); |
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start (); |
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} |
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|
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void again () |
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{ |
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ev_timer_again (EV_A_ static_cast<ev_timer *>(this)); |
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} |
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}; |
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|
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EV_DECLARE_WATCHER (periodic, periodic) |
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void set (ev_tstamp at, ev_tstamp interval = 0.) |
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{ |
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int active = is_active (); |
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if (active) stop (); |
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ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0); |
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if (active) start (); |
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} |
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|
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void start (ev_tstamp at, ev_tstamp interval = 0.) |
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{ |
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set (at, interval); |
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start (); |
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} |
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|
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void again () |
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{ |
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ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this)); |
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} |
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}; |
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|
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EV_DECLARE_WATCHER (idle, idle) |
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}; |
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|
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EV_DECLARE_WATCHER (prepare, prepare) |
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}; |
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|
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EV_DECLARE_WATCHER (check, check) |
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}; |
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|
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EV_DECLARE_WATCHER (sig, signal) |
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void set (int signum) |
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{ |
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int active = is_active (); |
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if (active) stop (); |
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ev_signal_set (static_cast<ev_signal *>(this), signum); |
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if (active) start (); |
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} |
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|
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void start (int signum) |
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{ |
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set (signum); |
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start (); |
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} |
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}; |
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|
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EV_DECLARE_WATCHER (child, child) |
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void set (int pid) |
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{ |
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int active = is_active (); |
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if (active) stop (); |
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ev_child_set (static_cast<ev_child *>(this), pid); |
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if (active) start (); |
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} |
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|
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void start (int pid) |
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{ |
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set (pid); |
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start (); |
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} |
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}; |
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|
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#undef EV_CONSTRUCT |
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#undef EV_DECLARE_WATCHER |
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} |
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|
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#endif |
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|
