class NIO::Monitor
Monitors watch IO objects for specific events
Attributes
readiness[RW]
Public Class Methods
new(p1, p2, p3)
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static VALUE NIO_Monitor_initialize(VALUE self, VALUE io, VALUE interests, VALUE selector_obj) { struct NIO_Monitor *monitor; struct NIO_Selector *selector; ID interests_id; interests_id = SYM2ID(interests); Data_Get_Struct(self, struct NIO_Monitor, monitor); if (interests_id == rb_intern("r")) { monitor->interests = EV_READ; } else if (interests_id == rb_intern("w")) { monitor->interests = EV_WRITE; } else if (interests_id == rb_intern("rw")) { monitor->interests = EV_READ | EV_WRITE; } else { rb_raise(rb_eArgError, "invalid event type %s (must be :r, :w, or :rw)", RSTRING_PTR(rb_funcall(interests, rb_intern("inspect"), 0))); } int descriptor = rb_io_descriptor(rb_convert_type(io, T_FILE, "IO", "to_io")); ev_io_init(&monitor->ev_io, NIO_Selector_monitor_callback, descriptor, monitor->interests); rb_ivar_set(self, rb_intern("io"), io); rb_ivar_set(self, rb_intern("interests"), interests); rb_ivar_set(self, rb_intern("selector"), selector_obj); Data_Get_Struct(selector_obj, struct NIO_Selector, selector); monitor->self = self; monitor->ev_io.data = (void *)monitor; /* We can safely hang onto this as we also hang onto a reference to the object where it originally came from */ monitor->selector = selector; if (monitor->interests) { ev_io_start(selector->ev_loop, &monitor->ev_io); } return Qnil; }
Public Instance Methods
add_interest(p1)
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static VALUE NIO_Monitor_add_interest(VALUE self, VALUE interest) { struct NIO_Monitor *monitor; Data_Get_Struct(self, struct NIO_Monitor, monitor); interest = monitor->interests | NIO_Monitor_symbol2interest(interest); NIO_Monitor_update_interests(self, (int)interest); return rb_ivar_get(self, rb_intern("interests")); }
close(p1 = v1)
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static VALUE NIO_Monitor_close(int argc, VALUE *argv, VALUE self) { VALUE deregister, selector; struct NIO_Monitor *monitor; Data_Get_Struct(self, struct NIO_Monitor, monitor); rb_scan_args(argc, argv, "01", &deregister); selector = rb_ivar_get(self, rb_intern("selector")); if (selector != Qnil) { /* if ev_loop is 0, it means that the loop has been stopped already (see NIO_Selector_shutdown) */ if (monitor->interests && monitor->selector->ev_loop) { ev_io_stop(monitor->selector->ev_loop, &monitor->ev_io); } monitor->selector = 0; rb_ivar_set(self, rb_intern("selector"), Qnil); /* Default value is true */ if (deregister == Qtrue || deregister == Qnil) { rb_funcall(selector, rb_intern("deregister"), 1, rb_ivar_get(self, rb_intern("io"))); } } return Qnil; }
closed?()
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static VALUE NIO_Monitor_is_closed(VALUE self) { struct NIO_Monitor *monitor; Data_Get_Struct(self, struct NIO_Monitor, monitor); return monitor->selector == 0 ? Qtrue : Qfalse; }
interests()
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static VALUE NIO_Monitor_interests(VALUE self) { return rb_ivar_get(self, rb_intern("interests")); }
interests=(p1)
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static VALUE NIO_Monitor_set_interests(VALUE self, VALUE interests) { if (NIL_P(interests)) { NIO_Monitor_update_interests(self, 0); } else { NIO_Monitor_update_interests(self, NIO_Monitor_symbol2interest(interests)); } return rb_ivar_get(self, rb_intern("interests")); }
io()
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static VALUE NIO_Monitor_io(VALUE self) { return rb_ivar_get(self, rb_intern("io")); }
readable?()
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static VALUE NIO_Monitor_is_readable(VALUE self) { struct NIO_Monitor *monitor; Data_Get_Struct(self, struct NIO_Monitor, monitor); if (monitor->revents & EV_READ) { return Qtrue; } else { return Qfalse; } }
readiness()
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static VALUE NIO_Monitor_readiness(VALUE self) { struct NIO_Monitor *monitor; Data_Get_Struct(self, struct NIO_Monitor, monitor); if ((monitor->revents & (EV_READ | EV_WRITE)) == (EV_READ | EV_WRITE)) { return ID2SYM(rb_intern("rw")); } else if (monitor->revents & EV_READ) { return ID2SYM(rb_intern("r")); } else if (monitor->revents & EV_WRITE) { return ID2SYM(rb_intern("w")); } else { return Qnil; } }
remove_interest(p1)
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static VALUE NIO_Monitor_remove_interest(VALUE self, VALUE interest) { struct NIO_Monitor *monitor; Data_Get_Struct(self, struct NIO_Monitor, monitor); interest = monitor->interests & ~NIO_Monitor_symbol2interest(interest); NIO_Monitor_update_interests(self, (int)interest); return rb_ivar_get(self, rb_intern("interests")); }
selector()
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static VALUE NIO_Monitor_selector(VALUE self) { return rb_ivar_get(self, rb_intern("selector")); }
value()
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static VALUE NIO_Monitor_value(VALUE self) { return rb_ivar_get(self, rb_intern("value")); }
value=(p1)
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static VALUE NIO_Monitor_set_value(VALUE self, VALUE obj) { return rb_ivar_set(self, rb_intern("value"), obj); }
writable?()
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static VALUE NIO_Monitor_is_writable(VALUE self) { struct NIO_Monitor *monitor; Data_Get_Struct(self, struct NIO_Monitor, monitor); if (monitor->revents & EV_WRITE) { return Qtrue; } else { return Qfalse; } }
Also aliased as: writeable?