Class: Event::Selector::KQueue

Inherits:
Object
  • Object
show all
Defined in:
ext/event/selector/kqueue.c

Instance Method Summary collapse

Constructor Details

#initialize(loop) ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 87

VALUE Event_Selector_KQueue_initialize(VALUE self, VALUE loop) {
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	Event_Selector_initialize(&data->backend, loop);
	int result = kqueue();
	
	if (result == -1) {
		rb_sys_fail("kqueue");
	} else {
		ioctl(result, FIOCLEX);
		data->descriptor = result;
		
		rb_update_max_fd(data->descriptor);
	}
	
	return self;
}

Instance Method Details

#close ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 106

VALUE Event_Selector_KQueue_close(VALUE self) {
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	close_internal(data);
	
	return Qnil;
}

#io_read(fiber, io, buffer, _length) ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 406

VALUE Event_Selector_KQueue_io_read(VALUE self, VALUE fiber, VALUE io, VALUE buffer, VALUE _length) {
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	int descriptor = Event_Selector_io_descriptor(io);
	
	size_t length = NUM2SIZET(_length);
	
	struct io_read_arguments io_read_arguments = {
		.self = self,
		.fiber = fiber,
		.io = io,
		
		.flags = Event_Selector_nonblock_set(descriptor),
		.descriptor = descriptor,
		.buffer = buffer,
		.length = length,
	};
	
	return rb_ensure(io_read_loop, (VALUE)&io_read_arguments, io_read_ensure, (VALUE)&io_read_arguments);
}

#io_wait(fiber, io, events) ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 337

VALUE Event_Selector_KQueue_io_wait(VALUE self, VALUE fiber, VALUE io, VALUE events) {
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	int descriptor = Event_Selector_io_descriptor(io);
	
	struct io_wait_arguments io_wait_arguments = {
		.events = io_add_filters(data->descriptor, descriptor, RB_NUM2INT(events), fiber),
		.data = data,
		.descriptor = descriptor,
	};
	
	return rb_rescue(io_wait_transfer, (VALUE)&io_wait_arguments, io_wait_rescue, (VALUE)&io_wait_arguments);
}

#io_write(fiber, io, buffer, _length) ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 481

VALUE Event_Selector_KQueue_io_write(VALUE self, VALUE fiber, VALUE io, VALUE buffer, VALUE _length) {
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	int descriptor = Event_Selector_io_descriptor(io);
	
	size_t length = NUM2SIZET(_length);
	
	struct io_write_arguments io_write_arguments = {
		.self = self,
		.fiber = fiber,
		.io = io,
		
		.flags = Event_Selector_nonblock_set(descriptor),
		.descriptor = descriptor,
		.buffer = buffer,
		.length = length,
	};
	
	return rb_ensure(io_write_loop, (VALUE)&io_write_arguments, io_write_ensure, (VALUE)&io_write_arguments);
}

#process_wait(fiber, pid, flags) ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 225

VALUE Event_Selector_KQueue_process_wait(VALUE self, VALUE fiber, VALUE pid, VALUE flags) {
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	struct process_wait_arguments process_wait_arguments = {
		.data = data,
		.pid = NUM2PIDT(pid),
		.flags = RB_NUM2INT(flags),
	};
	
	int waiting = process_add_filters(data->descriptor, process_wait_arguments.pid, fiber);
	
	if (waiting) {
		return rb_rescue(process_wait_transfer, (VALUE)&process_wait_arguments, process_wait_rescue, (VALUE)&process_wait_arguments);
	} else {
		return Event_Selector_process_status_wait(process_wait_arguments.pid);
	}
}

#push(fiber) ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 139

VALUE Event_Selector_KQueue_push(VALUE self, VALUE fiber)
{
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	Event_Selector_queue_push(&data->backend, fiber);
	
	return Qnil;
}

#raise(*args) ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 149

VALUE Event_Selector_KQueue_raise(int argc, VALUE *argv, VALUE self)
{
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	return Event_Selector_raise(&data->backend, argc, argv);
}

#ready? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/event/selector/kqueue.c', line 157

VALUE Event_Selector_KQueue_ready_p(VALUE self) {
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	return data->backend.ready ? Qtrue : Qfalse;
}

#resume(*args) ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 123

VALUE Event_Selector_KQueue_resume(int argc, VALUE *argv, VALUE self)
{
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	return Event_Selector_resume(&data->backend, argc, argv);
}

#select(duration) ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 573

VALUE Event_Selector_KQueue_select(VALUE self, VALUE duration) {
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	int ready = Event_Selector_queue_flush(&data->backend);
	
	struct select_arguments arguments = {
		.data = data,
		.count = KQUEUE_MAX_EVENTS,
		.storage = {
			.tv_sec = 0,
			.tv_nsec = 0
		}
	};
	
	// We break this implementation into two parts.
	// (1) count = kevent(..., timeout = 0)
	// (2) without gvl: kevent(..., timeout = 0) if count == 0 and timeout != 0
	// This allows us to avoid releasing and reacquiring the GVL.
	// Non-comprehensive testing shows this gives a 1.5x speedup.
	arguments.timeout = &arguments.storage;
	
	// First do the syscall with no timeout to get any immediately available events:
	select_internal_with_gvl(&arguments);
	
	// If there were no pending events, if we have a timeout, wait for more events:
	if (!ready && arguments.count == 0) {
		arguments.timeout = make_timeout(duration, &arguments.storage);
		
		if (!timeout_nonblocking(arguments.timeout)) {
			arguments.count = KQUEUE_MAX_EVENTS;
			
			select_internal_without_gvl(&arguments);
		}
	}
	
	for (int i = 0; i < arguments.count; i += 1) {
		VALUE fiber = (VALUE)arguments.events[i].udata;
		VALUE result = INT2NUM(arguments.events[i].filter);
		
		Event_Selector_fiber_transfer(fiber, 1, &result);
	}
	
	return INT2NUM(arguments.count);
}

#transfer ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 115

VALUE Event_Selector_KQueue_transfer(VALUE self)
{
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	return Event_Selector_fiber_transfer(data->backend.loop, 0, NULL);
}

#yield ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 131

VALUE Event_Selector_KQueue_yield(VALUE self)
{
	struct Event_Selector_KQueue *data = NULL;
	TypedData_Get_Struct(self, struct Event_Selector_KQueue, &Event_Selector_KQueue_Type, data);
	
	return Event_Selector_yield(&data->backend);
}