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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
| commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
| tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /tools/memory-model/litmus-tests/MP+poonceonces.litmus | |
| parent | Initial commit. (diff) | |
| download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip | |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/memory-model/litmus-tests/MP+poonceonces.litmus')
| -rw-r--r-- | tools/memory-model/litmus-tests/MP+poonceonces.litmus | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/memory-model/litmus-tests/MP+poonceonces.litmus b/tools/memory-model/litmus-tests/MP+poonceonces.litmus new file mode 100644 index 0000000000..ba9c99c6cf --- /dev/null +++ b/tools/memory-model/litmus-tests/MP+poonceonces.litmus @@ -0,0 +1,27 @@ +C MP+poonceonces + +(* + * Result: Sometimes + * + * Can the counter-intuitive message-passing outcome be prevented with + * no ordering at all? + *) + +{} + +P0(int *buf, int *flag) // Producer +{ + WRITE_ONCE(*buf, 1); + WRITE_ONCE(*flag, 1); +} + +P1(int *buf, int *flag) // Consumer +{ + int r0; + int r1; + + r0 = READ_ONCE(*flag); + r1 = READ_ONCE(*buf); +} + +exists (1:r0=1 /\ 1:r1=0) (* Bad outcome. *) |