This class provides a way to synchronize communication between threads.
Example:
require 'thread'
queue = Queue.new
producer = Thread.new do
5.times do |i|
sleep rand(i) # simulate expense
queue << i
puts "#{i} produced"
end
end
consumer = Thread.new do
5.times do |i|
value = queue.pop
sleep rand(i/2) # simulate expense
puts "consumed #{value}"
end
end
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Creates a new queue instance.
Source: show
static VALUE
rb_queue_initialize(VALUE self)
{
RSTRUCT_SET(self, QUEUE_QUE, ary_buf_new());
RSTRUCT_SET(self, QUEUE_WAITERS, ary_buf_new());
return self;
}
Removes all objects from the queue.
Source: show
static VALUE
rb_queue_clear(VALUE self)
{
rb_ary_clear(GET_QUEUE_QUE(self));
return self;
}
Returns true if the queue is empty.
Source: show
static VALUE
rb_queue_empty_p(VALUE self)
{
return queue_length(self) == 0 ? Qtrue : Qfalse;
}
size Link
Returns the length of the queue.
Source: show
static VALUE
rb_queue_length(VALUE self)
{
unsigned long len = queue_length(self);
return ULONG2NUM(len);
}
Source: show
static VALUE
undumpable(VALUE obj)
{
rb_raise(rb_eTypeError, "can't dump %"PRIsVALUE, rb_obj_class(obj));
UNREACHABLE;
}
Returns the number of threads waiting on the queue.
Source: show
static VALUE
rb_queue_num_waiting(VALUE self)
{
unsigned long len = queue_num_waiting(self);
return ULONG2NUM(len);
}
Retrieves data from the queue.
If the queue is empty, the calling thread is suspended until data is pushed
onto the queue. If non_block is true, the thread isn't
suspended, and an exception is raised.
Source: show
static VALUE
rb_queue_pop(int argc, VALUE *argv, VALUE self)
{
VALUE should_block = queue_pop_should_block(argc, argv);
return queue_do_pop(self, should_block);
}
Pushes the given object to the queue.
Source: show
static VALUE
rb_queue_push(VALUE self, VALUE obj)
{
return queue_do_push(self, obj);
}