0
0
mirror of https://github.com/zeromq/libzmq.git synced 2024-12-25 22:30:51 +08:00
libzmq/doc/zmq_atomic_counter_inc.adoc

54 lines
1.5 KiB
Plaintext

= zmq_atomic_counter_inc(3)
== NAME
zmq_atomic_counter_inc - increment an atomic counter
== SYNOPSIS
*int zmq_atomic_counter_inc (void *counter);*
== DESCRIPTION
The _zmq_atomic_counter_inc_ function increments an atomic counter in a
threadsafe fashion. This function uses platform specific atomic
operations.
== RETURN VALUE
The _zmq_atomic_counter_inc()_ function returns the old value of the
counter, before incrementing.
== 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
* xref:zmq_atomic_counter_new.adoc[zmq_atomic_counter_new]
* xref:zmq_atomic_counter_set.adoc[zmq_atomic_counter_set]
* xref:zmq_atomic_counter_dec.adoc[zmq_atomic_counter_dec]
* xref:zmq_atomic_counter_value.adoc[zmq_atomic_counter_value]
* xref:zmq_atomic_counter_destroy.adoc[zmq_atomic_counter_destroy]
== AUTHORS
This page was written by the 0MQ community. To make a change please
read the 0MQ Contribution Policy at <https://zeromq.org/how-to-contribute/>.