zmq_atomic_counter_value man page

zmq_atomic_counter_value ā€” return value of atomic counter

Synopsis

int zmq_atomic_counter_value (void *counter);

Description

The zmq_atomic_counter_value function returns the value of an atomic counter created by zmq_atomic_counter_new(). This function uses platform specific atomic operations.

Return Value

The zmq_atomic_counter_value() function returns the value of the atomic counter. If counter does not point to an atomic counter created by zmq_atomic_counter_new(), the behaviour is undefined.

Example

Test code for atomic counters.

void *counter = zmq_atomic_counter_new ();
assert (zmq_atomic_counter_value (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 1);
assert (zmq_atomic_counter_inc (counter) == 2);
assert (zmq_atomic_counter_value (counter) == 3);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
zmq_atomic_counter_set (counter, 2);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
zmq_atomic_counter_destroy (&counter);
return 0;

See Also

zmq_atomic_counter_new(3) zmq_atomic_counter_set(3) zmq_atomic_counter_inc(3) zmq_atomic_counter_dec(3) zmq_atomic_counter_destroy(3)

Authors

This page was written by the 0MQ community. To make a change please read the 0MQ Contribution Policy at http://www.zeromq.org/docs:contributing.

Referenced By

zmq(7), zmq_atomic_counter_dec(3), zmq_atomic_counter_destroy(3), zmq_atomic_counter_inc(3), zmq_atomic_counter_new(3), zmq_atomic_counter_set(3).

01/17/2018 0MQ 4.2.4 0MQ Manual