NAME

       zmq_atomic_counter_new - create a new atomic counter

SYNOPSIS

       void *zmq_atomic_counter_new (void);

DESCRIPTION

       The zmq_atomic_counter_new function creates a new atomic counter. You can use this in multithreaded
       applications to do, for example, reference counting of shared objects. The atomic counter is at least 32
       bits large. This function uses platform specific atomic operations.

RETURN VALUE

       The zmq_atomic_counter_new() function returns the new atomic counter if successful. Otherwise it returns
       NULL.

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_set(3) zmq_atomic_counter_inc(3) zmq_atomic_counter_dec(3) zmq_atomic_counter_value(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.