repo.or.cz
/
linux
/
fpc-iii.git
/
blob
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
log
|
graphiclog1
|
graphiclog2
|
commit
|
commitdiff
|
tree
|
refs
|
edit
|
fork
blame
|
history
|
raw
|
HEAD
Merge tag 'block-5.9-2020-08-14' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git]
/
tools
/
memory-model
/
litmus-tests
/
CoRR+poonceonce+Once.litmus
blob
967f9f2a6226ba62ed593e6aff9e99d1fae02c85
1
C CoRR+poonceonce+Once
2
3
(*
4
* Result: Never
5
*
6
* Test of read-read coherence, that is, whether or not two successive
7
* reads from the same variable are ordered.
8
*)
9
10
{}
11
12
P0(int *x)
13
{
14
WRITE_ONCE(*x, 1);
15
}
16
17
P1(int *x)
18
{
19
int r0;
20
int r1;
21
22
r0 = READ_ONCE(*x);
23
r1 = READ_ONCE(*x);
24
}
25
26
exists (1:r0=1 /\ 1:r1=0)