ZMQ_ATOMIC_COUNTER_I

Section: 0MQ Manual (3)
Updated: 01/30/2021
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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

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)  

AUTHORS

This page was written by the 0MQ community. To make a change please read the 0MQ Contribution Policy at m[blue]http://www.zeromq.org/docs:contributingm[].

 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
EXAMPLE
SEE ALSO
AUTHORS