File: CoWR%2Bpoonceonce%2BOnce.litmus

package info (click to toggle)
linux 6.12.38-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, trixie
  • size: 1,675,544 kB
  • sloc: ansic: 25,916,840; asm: 269,589; sh: 136,393; python: 65,219; makefile: 55,714; perl: 37,750; xml: 19,284; cpp: 5,894; yacc: 4,927; lex: 2,939; awk: 1,594; sed: 28; ruby: 25
file content (25 lines) | stat: -rw-r--r-- 324 bytes parent folder | download | duplicates (36) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
C CoWR+poonceonce+Once

(*
 * Result: Never
 *
 * Test of write-read coherence, that is, whether or not a write to a
 * given variable and a later read from that same variable are ordered.
 *)

{}

P0(int *x)
{
	int r0;

	WRITE_ONCE(*x, 1);
	r0 = READ_ONCE(*x);
}

P1(int *x)
{
	WRITE_ONCE(*x, 2);
}

exists (x=1 /\ 0:r0=2)