File: LB%2Bpoacquireonce%2Bpooncerelease.litmus

package info (click to toggle)
linux 5.10.13-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,182,916 kB
  • sloc: ansic: 19,488,074; asm: 263,676; sh: 73,873; makefile: 44,685; perl: 34,640; python: 32,386; cpp: 6,070; yacc: 4,755; lex: 2,742; awk: 1,214; ruby: 25; sed: 5
file content (29 lines) | stat: -rw-r--r-- 412 bytes parent folder | download | duplicates (35)
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
26
27
28
29
C LB+poacquireonce+pooncerelease

(*
 * Result: Never
 *
 * Does a release-acquire pair suffice for the load-buffering litmus
 * test, where each process reads from one of two variables then writes
 * to the other?
 *)

{}

P0(int *x, int *y)
{
	int r0;

	r0 = READ_ONCE(*x);
	smp_store_release(y, 1);
}

P1(int *x, int *y)
{
	int r0;

	r0 = smp_load_acquire(y);
	WRITE_ONCE(*x, 1);
}

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