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/*
* Copyright (c) 2011 Tony Arcieri. Distributed under the MIT License. See
* LICENSE.txt for further details.
*/
#include "nio4r.h"
static VALUE mNIO = Qnil;
static VALUE cNIO_Monitor = Qnil;
/* Allocator/deallocator */
static VALUE NIO_Monitor_allocate(VALUE klass);
static void NIO_Monitor_mark(struct NIO_Monitor *monitor);
static void NIO_Monitor_free(struct NIO_Monitor *monitor);
/* Methods */
static VALUE NIO_Monitor_initialize(VALUE self, VALUE selector, VALUE io, VALUE interests);
static VALUE NIO_Monitor_close(int argc, VALUE *argv, VALUE self);
static VALUE NIO_Monitor_is_closed(VALUE self);
static VALUE NIO_Monitor_io(VALUE self);
static VALUE NIO_Monitor_interests(VALUE self);
static VALUE NIO_Monitor_selector(VALUE self);
static VALUE NIO_Monitor_is_readable(VALUE self);
static VALUE NIO_Monitor_is_writable(VALUE self);
static VALUE NIO_Monitor_value(VALUE self);
static VALUE NIO_Monitor_set_value(VALUE self, VALUE obj);
static VALUE NIO_Monitor_readiness(VALUE self);
/* Internal functions */
static void NIO_Monitor_callback(struct ev_loop *ev_loop, struct ev_io *io, int revents);
#if HAVE_RB_IO_T
rb_io_t *fptr;
#else
OpenFile *fptr;
#endif
/* Monitor control how a channel is being waited for by a monitor */
void Init_NIO_Monitor()
{
mNIO = rb_define_module("NIO");
cNIO_Monitor = rb_define_class_under(mNIO, "Monitor", rb_cObject);
rb_define_alloc_func(cNIO_Monitor, NIO_Monitor_allocate);
rb_define_method(cNIO_Monitor, "initialize", NIO_Monitor_initialize, 3);
rb_define_method(cNIO_Monitor, "close", NIO_Monitor_close, -1);
rb_define_method(cNIO_Monitor, "closed?", NIO_Monitor_is_closed, 0);
rb_define_method(cNIO_Monitor, "io", NIO_Monitor_io, 0);
rb_define_method(cNIO_Monitor, "interests", NIO_Monitor_interests, 0);
rb_define_method(cNIO_Monitor, "selector", NIO_Monitor_selector, 0);
rb_define_method(cNIO_Monitor, "value", NIO_Monitor_value, 0);
rb_define_method(cNIO_Monitor, "value=", NIO_Monitor_set_value, 1);
rb_define_method(cNIO_Monitor, "readiness", NIO_Monitor_readiness, 0);
rb_define_method(cNIO_Monitor, "readable?", NIO_Monitor_is_readable, 0);
rb_define_method(cNIO_Monitor, "writable?", NIO_Monitor_is_writable, 0);
rb_define_method(cNIO_Monitor, "writeable?", NIO_Monitor_is_writable, 0);
}
static VALUE NIO_Monitor_allocate(VALUE klass)
{
struct NIO_Monitor *monitor = (struct NIO_Monitor *)xmalloc(sizeof(struct NIO_Monitor));
return Data_Wrap_Struct(klass, NIO_Monitor_mark, NIO_Monitor_free, monitor);
}
static void NIO_Monitor_mark(struct NIO_Monitor *monitor)
{
}
static void NIO_Monitor_free(struct NIO_Monitor *monitor)
{
xfree(monitor);
}
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;
#if HAVE_RB_IO_T
rb_io_t *fptr;
#else
OpenFile *fptr;
#endif
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, 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;
ev_io_start(selector->ev_loop, &monitor->ev_io);
return Qnil;
}
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) {
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;
}
static VALUE NIO_Monitor_is_closed(VALUE self)
{
struct NIO_Monitor *monitor;
Data_Get_Struct(self, struct NIO_Monitor, monitor);
return !monitor->selector;
}
static VALUE NIO_Monitor_io(VALUE self)
{
return rb_ivar_get(self, rb_intern("io"));
}
static VALUE NIO_Monitor_interests(VALUE self)
{
return rb_ivar_get(self, rb_intern("interests"));
}
static VALUE NIO_Monitor_selector(VALUE self)
{
return rb_ivar_get(self, rb_intern("selector"));
}
static VALUE NIO_Monitor_value(VALUE self)
{
return rb_ivar_get(self, rb_intern("value"));
}
static VALUE NIO_Monitor_set_value(VALUE self, VALUE obj)
{
return rb_ivar_set(self, rb_intern("value"), obj);
}
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;
}
}
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;
}
}
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;
}
}
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