zmq_atomic_counter_set - Man Page

void zmq_atomic_counter_set (void *counter, int value);

The zmq_atomic_counter_set function sets the counter to a new value, in a threadsafe fashion. The largest value that is guaranteed to work across all platforms is 2^31-1. This function uses platform specific atomic operations.

The zmq_atomic_counter_set() function has no return value.

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_inc(3) zmq_atomic_counter_dec(3) zmq_atomic_counter_value(3) zmq_atomic_counter_destroy(3)

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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_value(3).