class NIO::Monitor
Monitors watch IO objects for specific events
Attributes
readiness[RW]
Public Class Methods
new(p1, p2, p3)
click to toggle source
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;
rb_io_t *fptr;
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)));
}
GetOpenFile(rb_convert_type(io, T_FILE, "IO", "to_io"), fptr);
ev_io_init(&monitor->ev_io, NIO_Selector_monitor_callback, FPTR_TO_FD(fptr), 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)
click to toggle source
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, interest);
return rb_ivar_get(self, rb_intern("interests"));
}
close(p1 = v1)
click to toggle source
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?()
click to toggle source
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()
click to toggle source
static VALUE NIO_Monitor_interests(VALUE self)
{
return rb_ivar_get(self, rb_intern("interests"));
}
interests=(p1)
click to toggle source
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()
click to toggle source
static VALUE NIO_Monitor_io(VALUE self)
{
return rb_ivar_get(self, rb_intern("io"));
}
readable?()
click to toggle source
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()
click to toggle source
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)
click to toggle source
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, interest);
return rb_ivar_get(self, rb_intern("interests"));
}
selector()
click to toggle source
static VALUE NIO_Monitor_selector(VALUE self)
{
return rb_ivar_get(self, rb_intern("selector"));
}
value()
click to toggle source
static VALUE NIO_Monitor_value(VALUE self)
{
return rb_ivar_get(self, rb_intern("value"));
}
value=(p1)
click to toggle source
static VALUE NIO_Monitor_set_value(VALUE self, VALUE obj)
{
return rb_ivar_set(self, rb_intern("value"), obj);
}
writable?()
click to toggle source
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?