Manpages - zmq_atomic_counter_value.3

Table of Contents

NAME

zmq_atomic_counter_value - 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.

Author: dt

Created: 2022-02-21 Mon 12:17