1 /*
2  * Atomic reference counts - used by applications.
3  *
4  * We use locks to avoid the assembly of the Plan 9 versions.
5  */
6 
7 #include "threadimpl.h"
8 
9 void
10 incref(Ref *r)
11 {
12 	lock(&r->lk);
13 	r->ref++;
14 	unlock(&r->lk);
15 }
16 
17 long
18 decref(Ref *r)
19 {
20 	long n;
21 
22 	lock(&r->lk);
23 	n = --r->ref;
24 	unlock(&r->lk);
25 	return n;
26 }