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ZMQ_ATOMIC_COUNTER_I(3) 0MQ Manual ZMQ_ATOMIC_COUNTER_I(3)

zmq_atomic_counter_inc - increment an atomic counter

int zmq_atomic_counter_inc (void *counter);

The zmq_atomic_counter_inc function increments an atomic counter in a threadsafe fashion. This function uses platform specific atomic operations.

The zmq_atomic_counter_inc() function returns the old value of the counter, before incrementing.

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;

zmq_atomic_counter_new(3) zmq_atomic_counter_set(3) zmq_atomic_counter_dec(3) zmq_atomic_counter_value(3) zmq_atomic_counter_destroy(3)

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09/06/2020 0MQ 4.3.1