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 410

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 341

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 485

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 229

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 143

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 153

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_wait_and_raise(&data->backend, argc, argv);
}

#ready? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/event/selector/kqueue.c', line 161

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 125

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 577

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);
  
  Event_Selector_fiber_transfer(data->backend.loop, 0, NULL);
  
  return Qnil;
}

#yield ⇒ Object 



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# File 'ext/event/selector/kqueue.c', line 133

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);
  
  Event_Selector_yield(&data->backend);
  
  return Qnil;
}