NAME

       zmq_atomic_counter_dec - decrement an atomic counter

SYNOPSIS

       int zmq_atomic_counter_dec (void *counter);

DESCRIPTION

       The zmq_atomic_counter_dec function decrements an atomic counter in a threadsafe fashion.
       This function uses platform specific atomic operations.

RETURN VALUE

       The zmq_atomic_counter_dec() function returns 1 if the counter is greater than zero after
       decrementing, or zero if the counter reached zero.

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_value(3) zmq_atomic_counter_destroy(3)

AUTHORS

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       Contribution Policy at http://www.zeromq.org/docs:contributing.