From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- .../litmus-tests/MP+poonceonces.litmus | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 tools/memory-model/litmus-tests/MP+poonceonces.litmus (limited to 'tools/memory-model/litmus-tests/MP+poonceonces.litmus') 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. *) -- cgit v1.2.3